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92results about How to "Improve the effect of biochemical treatment" patented technology
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Wastewater treating microbial agent and preparation method thereof
ActiveCN103374525AAdaptable and TolerableGood impact resistanceBacteriaMicroorganism based processesChemistryNitric oxide
The invention discloses a wastewater treating microbial agent and a preparation method thereof. The microbial agent contains kocuriapalustris FSDN-A, arthrobactercreatinolyticus FDN-1, flavobacteriummizutaii FDN-2, paracoccusdenitrificans DN-3 and methylobacteriumphyllosphaerae SDN-3, wherein the collection register numbers of the five strains are respectively CGMCCNo.5061, CGMCCNo.3657, CGMCCNo.3659, CGMCCNo.3658 and CGMCCNo.3660. The microbial agent can achieve removal of ammonia nitrogen, total nitrogen and CODcr in the same reactor, has a good wastewater treatment effect, and can achieve short-cut nitrification and denitrification or simultaneous nitrification and denitrification while removing COD. Kocuriapalustris FSDN-A can utilize the two nitric oxides including nitrite nitrogen and nitric nitrogen, can ensure thorough denitrification of a wastewater treatment system, is slow in appreciation in the process of competing for substrates, is favorable for reduction of sludge, and further widens the application range of the microbial agent.
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for processing organosilicon waste water
ActiveCN101759329AImprove biodegradabilityReduce processing costsWater contaminantsTreatment with aerobic and anaerobic processesElectrolysisWater volume
The invention relates to a method for processing organosilicon waste water. The method optimizes and combines a preprocessing unit and a biochemistry unit, aiming at the properties of high salt and difficult degradation of the organosilicon waste water. The method can process the organosilicon waste water to the second grade standard of integrated wastewater discharge standard (GB8978-1996). The organosilicon waste water is strongly acidic. A preneutralization pool is arranged at the front end of technological process and neutralizes the PH of the waste water to about 1 to 2. The waste water enters a micro-electrolysis reactor which is filled with micro-electrolysis stuffing. The effluent enters a secondary neutralization pool, and water volume and PH value are adjusted further. The waste water enters a biochemistry processing establishment and at last enters a secondary sedimentation tank. The biochemistry processing system of the waste water comprises a primary oxygen compatibility pool, a primary aerobic pool and a secondary aerobic pool. Microbial flora and relative carriers are added to the pools. The invention has the advantages that the processed organic waste water is guaranteed to meet the specified standard and the processing cost is reduced greatly. The win-win solution of economy and environment is realized.
Owner:蓝星环境工程有限公司
City sewage treating process and system
InactiveCN1706760AReduce loadImprove securityMultistage water/sewage treatmentIndustrial effluentNitrogen
The present invention discloses city sewage treating process and system. The city sewage treating process includes interception with coarse and middle grating to eliminate large suspended matter and the following steps: throwing flocculent before sewage flows into collecting pump house; throwing coagulant aid after sewage flows out of collecting pump house; treating in mixing and reacting silt basin; solid-liquid separation in settling pond; treating in nitrifying pond and denitrifying pond and filtering in sand filter. The process can treat mixed city sewage of industry waste water and domestic sewage and with BOD / COD in 0.15-0.3, can eliminate phosphate and nitrogen simultaneously. The present invention has short retention period, short technological process, small covered area and convenient management.
Owner:高斌 +2
Fine chemical wastewater treatment and reuse method
InactiveCN103159381AAchieve reductionEasy to handleMultistage water/sewage treatmentAerobic treatment systemChemical treatment
The invention discloses a chemical treatment method and specifically relates to a fine chemical wastewater treatment and reuse method based on a membrane bioreactor (MBR)-reverse osmosis (RO) combination technology. The method disclosed by the invention comprises the following steps: performing oil separation, air floatation and coagulative precipitation on wastewater drained from a production workshop, then performing decomposition through an extracellular enzyme of anaerobic microorganisms in a hydrolysis treatment system, further entering an aerobic treatment system with aerobic microorganisms, further enabling the wastewater from the aerobic treatment system to enter an MBR system to perform further aerobic treatment, simultaneously performing mud-water separation, directly enabling water from the MBR system to enter an RO system, reusing the water produced by the RO system in production, and draining concentrated water into a pipeline network in a park. The method disclosed by the invention has the advantages of combining MBR with RO, improving the biochemical treatment effect of the system, further improving the recovery rate of the RO system, increasing the yield of pure water and reducing the discharge amount of the wastewater. The method has the advantages of short process flow of the system, high degree of automation, simplicity and convenience in operation and stability in operation.
Owner:HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
Salt-tolerant COD removal denitrifying microbial agent and preparation method thereof
ActiveCN106635861ASimple compositionRapid cultivationBacteriaMicroorganism based processesSynechococcusMicrobial agent
The invention relates to a salt-tolerant COD removal denitrifying microbial agent. The microbial agent consists of at least one of paracoccus sp FSTB-2, microbacterium kitamiense FSTB-4 and pseudomonas stutzeri FSTB-5, and further consists of at least one of paracoccus denitrificans DN-3 and methylobacterium phyllosphaerae SDN-3, wherein the paracoccus sp FSTB-2, the microbacterium kitamiense FSTB-4 and the pseudomonas stutzeri FSTB-5 are preserved in China General Microbiological Culture Collection Center on June 1, 2015, with preservation numbers of CGMCC No.10938, CGMCC No.10939 and CGMCC No.10940; and the paracoccus denitrificans DN-3 and the methylobacterium phyllosphaerae SDN-3 are disclosed in CN102465104A and CN102465103, and the preservation numbers of the paracoccus denitrificans DN-3 and the methylobacterium phyllosphaerae SDN-3 are CGMCC No.3658 and CGMCC No.3660. The microbial agent can be used for directly processing total nitrogen and COD in high-salinity wastewater, and the microbial agent can be also added to various biochemical reaction constructions so as to improve microbiological composition, optimize the salt tolerance of a microbial system in wastewater treatment and improve total nitrogen and COD removal rate of the entire process.
Owner:CHINA PETROLEUM & CHEM CORP +1
Membrane bioreactor device for retarding membrane pollution and sewage treatment method
ActiveCN104556364AReduce pollutionReduce pollution rateSustainable biological treatmentBiological water/sewage treatmentActivated sludgeWater quality
The invention provides a membrane bioreactor device for retarding membrane pollution and a sewage treatment method. The membrane bioreactor device is characterized in that a three-phase separator is arranged in a membrane bioreactor, and a sewage treatment device with a membrane reaction zone at the upper part and a contact oxidation zone at the lower part is formed; sewage enters the contact oxidation zone from the bottom of the reactor and then enters the membrane reaction zone from a slit of the three-phase separator; under the combined action of the absorption of activated sludge and the interception of membranes, the treatment of the sewage is realized; with the adoption of a rotating membrane filtering component, the rotating shear force is increased to retard the membrane pollution, and meanwhile, the fact that all the membranes have uniform cleaning strength is guaranteed, and cleaning dead corners are reduced; the three-phase separator is connected with a gas guide tube, so that residual gas in the contact oxidation zone is guided into the membrane reaction zone at the upper part to be used as a gas washing source of a membrane component, therefore the energy consumption is reduced; online ultrasonic cleaning and chemical cleaning equipment is arranged to reduce the assembly and disassembly procedures in the membrane cleaning process. The sewage treatment device and method have the advantages of high treatment efficiency, small membrane pollution, stable effluent water quality and good convenience in operation and management.
Owner:LIAONING BEIFANG ENVIRONMENTAL PROTECTION
Sewage treatment method
InactiveCN102718358AReduce inputReduce the amount of introductionMultistage water/sewage treatmentWater treatmentMicroorganism
Owner:ZHENGZHOU MENGXI ENVIRONMENTAL PROTECTION TECH
Method for producing iron carbon micro-electrolysis filler from nonferrous metal waste ore slag
InactiveCN103332767AImprove processing efficiencyEfficient removalSolid waste disposalWater/sewage treatmentHigh current densityElectrolysis
The invention discloses a method for producing an iron carbon micro-electrolysis filler from nonferrous metal waste ore slag, which comprises the following steps: grinding copper ore slag and lignite, and passing through a 100-120-mesh sieve; carrying out magnetic separation to remove impurity silicon dioxide powder; adding assistants; injecting into a squeeze film to obtain strips, and cutting into cylindrical blanks; drying; heating the blanks; and carrying out compression molding. The product disclosed by the invention has the characteristics of integrated iron carbon, large specific area, light specific gravity, strong activity, high current density, high efficiency for treating various types of sewage, and the like, and has the catalyst / micropore-fused alloy structure. The high-activity nonferrous metals, such as Cu and the like, contained in the novel product change the phenomena of filler passivation, hardening and the like in the old product operational process, and ensure the long sustained action period of the micro-electrolysis reaction process.
Owner:HEFEI ZHENGQING ENVIRONMENTAL TECH DEV
Device and method for treating difficultly degraded organic waste water by plasma technology
InactiveCN102351282APromote migrationFast responseWater/sewage treatment by magnetic/electric fieldsWaste water treatment from textile industryDecompositionPlasma technology
The invention discloses a device and a method for treating difficultly degraded organic waste water by a plasma technology. The device is characterized in that the device comprises a low-temperature plasma tank; a side of the low-temperature plasma tank is provided with a water distribution tank; the water distribution tank is communicated with the low-temperature plasma tank by water distribution pipes; the water distribution pipes comprises a main water distribution pipe and multiple perforated water distribution branch pipes; the perforated water distribution branch pipes penetrate transversely the low-temperature plasma tank and are hung with a metal wire mesh; a water collecting tank is arranged in the low-temperature plasma tank and is located below the metal wire mesh; a high voltage pole is arranged in the low-temperature plasma tank; the high voltage pole and the metal wire mesh are arranged at an interval; and the high voltage pole is connected with an external power supply.The method comprises the following steps of assembling all the parts of the device, enabling organic waste water to form a uniform liquid film on the metal wire mesh and to flow down, and carrying out destroy and decomposition of pollutants by active substances produced by high voltage pole discharging. The device has a small floor space, is suitable for large-scale treatment, has a high active free radical yield and can improve treatment effects of difficultly degraded organic waste water.
Owner:NINGBO UNIV
Integrated sewage treatment device
InactiveCN105293704AFully mixed contact exchangeTo promote metabolismTreatment with aerobic and anaerobic processesRetention timeSludge
The invention provides an integrated sewage treatment device. A mud-water mixed solution sequentially flows through a mud-water mixing area, a primary biochemical area and a secondary biochemical area along the length direction of a box body, a part of sludge and a part of mixed solution in the secondary biochemical area are refluxed back to the mud-water mixing area by a refluxing mechanism and then return to the primary biochemical area to form a circulation, and nitrification liquid returned to the secondary biochemical area is subjected to denitrification reaction in the oxygen-deficient primary biochemical area to remove total nitrogen and improve the sewage treatment capacity. Moreover, the mud-water mixing area is arranged on the integrated sewage treatment device to ensure that refluxed sludge, inflow water and the mixed solution refluxed into the secondary biochemical area are mixed together, and then the mixture overflows out of a clapboard of the mud-water mixing area and enters the primary biochemical area, so that on the one hand, an effect of buffering water flow is achieved to ensure that liquids are mixed more fully, and on the other hand, the mud-water mixed solution flows into the primary biochemical area in the form of a line under the action of overflowing, and the retention time of the mud-water mixed solution is almost identical, so that the sewage treatment effect is stable.
Owner:HUAYI ENVIRONMENTAL PROTECTION CO LTD
Method for processing phenolic resin phenolic wastewater
InactiveCN101481187AStable production processReduce energy consumptionWater contaminantsMultistage water/sewage treatmentChemistryCommon method
The invention discloses a method for processing waste water containing phenol generated in the production process of metlbond resin; the method comprises the following steps: firstly the pH value of waste water is adjusted to 11.5 to 14 to enable the phenol in the waste water to exist in a phenol sodium type, and then the phenol in the waste water is separated by rectification. The content of phenol in the waste water containing phenol is from 20000 ppm to 50000 ppm, the pH equals to 4, and the COD equals to 140000ppm. The rectification technology of the waste water has stable production process, low energy consumption, compact equipment installation, simple operation and easy process control. The rectified waste water has strong biochemical performance, the difficulty of the biochemical treatment of the subsequent work procedures is lowered, and the capability of biochemical treatment is improved. Compared with the common method, the invention causes no secondary pollution. The waste water processed by the method of the invention has the phenol removing rate of higher than 95 percent and the rectified outlet water BOD / COD equaling to 4, belongs to the easy biochemical treatment method of the waste water containing phenol, and changes the condition of the serious pollution caused by the waste water containing phenol of the metlbond resin industry.
Owner:SHANDONG SHENGQUAN NEW MATERIALS CO LTD
Process for deeply treating printing and dyeing wastewater in presence of attapulgite catalyst
InactiveCN104193119AEasy to handleGood effectMultistage water/sewage treatmentChemical oxygen demandWater quality
The invention discloses a process for deeply treating printing and dyeing wastewater in the presence of an attapulgite catalyst. The process comprises the following steps: collecting the printing and dyeing wastewater subjected to biochemical treatment for the first time into an adjusting tank, adjusting the water quantity and the water quality, feeding into a coagulative precipitation tank for coagulative sedimentation treatment, feeding outlet water of the coagulative precipitation tank into an anaerobic tank for acidification and hydrolysis, performing biochemical treatment on outlet water of the anaerobic tank by adopting an anoxic-aerobic tank with the attapulgite catalyst, removing organic matters, chromaticity and ammonia nitrogen, and discharging by standard. According to the process, the attapulgite catalyst is added during the biochemical treatment of the anoxic-aerobic tank, so that the aerobic biochemical treatment capability and effect are improved, the biochemical treatment effect on difficultly treated printing and dyeing wastewater is enhanced, COD (chemical oxygen demand), chromaticity and ammonia nitrogen in the printing and dyeing wastewater are efficiently removed, and the printing and dyeing wastewater is discharged by standard; the treatment cost of the printing and dyeing wastewater is reduced, the process is convenient to perform, and the practical application of engineering and the technical improvement of existing printing and dyeing wastewater treatment engineering are facilitated.
Owner:ANHUI JIANGHAI ENVIRONMENT ENG
Electrolytic flotation equipment
ActiveCN102757113AIncrease dissolved oxygenExtended stayWater/sewage treatment by flotationElectrolysisChemical oxygen demand
The invention discloses electrolytic flotation equipment. The electrolytic flotation equipment comprises a shell, wherein two sides of the shell are respectively provided with a water inlet and a water outlet, the top end of the shell is provided with a slag scraping device, buffering baffle plates and overflow weir plates are sequentially arranged in the shell at intervals to divide the shell into a buffering area, a mixing area and an effluent area, a slag discharging tank corresponding to the slag scraping device is arranged on the shell above the tail end of the mixing area, an electrolytic generator is arranged at the bottom of the front end of the mixing area and comprises a guide rod, a movable platform and a plurality of electrode groups, the guide rod is vertically fixed on the shell at the bottom of the front end of the mixing area, the bottom end of the guide rod is provided with a limiting stopper, the movable platform is movably sheathed on the guide rod, the electrode groups are fixed on the movable platform, electrodes can be very conveniently taken out of water for replacement, titanium-based oxidizing electrodes are used, and hypochlorite and hydroxyl free radicals are formed simultaneously when microbubbles are formed so as to effectively reduce the COD (Chemical Oxygen Demand), improve the B / C ratio and be beneficial to the follow-up biological treatment.
Owner:JIANGHUA WATER TREATMENT EQUIP PLANT JIANGSU
Method and device for coal chemical sewage reuse and zero emission
ActiveCN103910459AThe process steps are simpleEasy to operateMultistage water/sewage treatmentWater storage tankFiltration
The invention provides a method and a device for coal chemical sewage reuse and zero emission. The device comprises: an oil separation tank; an ultramicro air flotation instrument, which is communicated with the oil separation tank; and a multistage A / O system, which consists of: an anaerobic zone communicated with the ultramicro air flotation instrument, an aerobic zone communicated with the anaerobic zone, a precipitation zone communicated with the anaerobic zone, and a stable zone communicated with the precipitation zone; a membrane filtration system, which is communicated with the stable zone and the anaerobic zone; a super-efficient reverse osmosis system, which includes: a hardness removal instrument communicated with the membrane filtration system, a soluble gas removal instrument communicated with the hardness removal instrument, and a membrane filtration instrument communicated with the soluble gas removal instrument; a membrane filtration generated water storage tank, which is communicated with the membrane filtration instrument; a membrane filtration concentrated water storage tank, which is communicated with the membrane filtration instrument; and an evaporation crystallizer, which is communicated with the reverse osmosis concentrated water tank. The device and the method provided by the invention ensure the effluent water quality and no exterior drainage, and truly achieve zero emission.
Owner:北京清大国华膜科技有限公司
Device, structure and process for processing ammonia-nitrogen sewage by aeration zeolite fluidized bed
InactiveCN102992437AHigh removal rateRemove limitedWater contaminantsWater/sewage treatment by sorptionHigh concentrationAbsorption capacity
The invention discloses a device, a structure and a process for processing ammonia-nitrogen sewage by an aeration zeolite fluidized bed, wherein the device comprises an upward flow filter; a filter plate is arranged in the filter; a zeolite filling material is arranged above the filter plate, and an air pipe and a water feeding pipe are arranged below the filter plate; a water outlet is arranged above the zeolite filling material; and an exhaust pipe is arranged at the top of the filter. According to the device, the zeolite filling material is made to flow in water by aeration, in order to absorb the ammonia and nitrogen in the water by zeolite; meanwhile, zeolite absorbers rub against each other to result in surface peeling off, and the fallen fine particles with ammonia and nitrogen absorbed flow away along with the flow, so the surface of the zeolite filling material is continuously renewed to develop a sustainable absorption, and the zeolite filling material is not regenerated; therefore, the problems of limited absorption capacity, frequent regeneration in processing high-concentration ammonia-nitrogen sewage and limited application of the zeolite in the prior art are solved.
Owner:CHINA NUCLEAR POWER ENG CO LTD
Efficient backwash method for biofilter
PendingCN107055746AReduce cloggingImprove the effect of biochemical treatmentSpecific water treatment objectivesLoose filtering material filtersTreatment effectFilter material
The invention relates to an efficient backwash method for a biofilter. The method includes: 1) a water outlet side wall, below a backwash effluent weir, of a newly constructed biofilter is provided with a long strip shaped backwash water outlet and provided with an electric water discharge device; and a water outlet side wall, below a backwash effluent weir, of a biofilter in use is provided with a rectangular or round backwash water outlet and provided with a manual water discharge device; 2) sequentially performing gas washing, gas-water washing and water washing during backwashing of the biofilter; 3) slowly descending a water discharging baffle after sewage discharging; 4) starting a backwashing motor to blow suspended solids to a suspended state; 5) starting a water inlet valve to flush sewage out of the backwash water outlet, and closing the backwash water outlet. The efficient backwash method for the biofilter has advantages that the suspended solids and aged biological membranes generated in the biofilter can be cleared and discharged outside the biofilter thoroughly on the premise that backwash water consumption is not increased; blockage and filter material caking in the biofilter can be reduced, shedding of the biological membranes due to excessive flushing of filter materials can be avoided, and accordingly biochemical treatment effects of the biofilter are improved.
Owner:鞍钢集团工程技术有限公司
Biochemical treatment device of kitchen wastes
InactiveCN107962060AImprove biochemical treatment efficiencyImprove the effect of biochemical treatmentRotary stirring mixersSolid waste disposalWater vaporFiltration
The invention discloses a biochemical treatment device of kitchen wastes. The biochemical treatment device comprises a box body, wherein a feeding opening is formed in the upper part of the box body;a discharging opening I is formed in the side wall of the box body; a crushing chamber is formed between the feeding opening and the box body; a crushing mechanism is arranged in the crushing chamber;a partition plate and a material receiving cylinder are arranged in the box body; the partition plate is tilted; filtration through holes are formed in the partition plate; the discharging opening Iis located above one side of the down-tilted end of the partition plate; the material receiving cylinder is located under the partition plate; a stirring device is arranged in the material receiving cylinder; an interlayer is formed between the outer wall of the material receiving cylinder and the inner wall of the box body; a heating device and a heat insulation material are successively arrangedin the interlayer from inside to outside. According to the biochemical treatment device of kitchen wastes, the stirring device and the heating device are adopted; the biochemical treatment efficiencyand effect of the waste are improved; the tilted partition plate is arranged; the large crushed wastes or the difficultly-crushed waste sundries can be sorted and reused; the odor can be effectivelyremoved by the water vapor generated in the processes of recycling and treating; the secondary pollution to the environment can be avoided.
Owner:SUZHOU MEIJIESHENG ENVIRONMENTAL PROTECTION ENG CO LTD
PVC (Polyvinyl Chloride) mother liquor treatment method based on MBR (Membrane Bioreactor) technique
ActiveCN102557257AGood and stable effluent qualityShort processTreatment with aerobic and anaerobic processesPolyvinyl alcoholPolyvinyl chloride
The invention discloses a wastewater biochemical treatment method, and specifically discloses a method for treating PVC (Polyvinyl Chloride) mother liquor by utilizing MBR (Membrane Bioreactor) technique. The method comprises the following sequential process schemes: carrying out anaerobic reaction treatment on the PVC mother liquor with PVA (Polyvinyl Alcohol)-containing degrading bacteria, wherein the anaerobic reaction temperature is controlled at 20-35 DEG C, the reaction time is controlled at 6-10h, and the dissolved oxygen is controlled at 0.1-0.2mg / L; degrading organic macromolecules into micromolecules so as to improve biodegradability; and then introducing anaerobic reaction effluent to the MBR for aerobic treatment so as to ultimately obtain clean water with COD (Chemical OxygenDemand) not more than 30mg / L, wherein bacilli is contained in the MBR. The method has the advantages that treatment cost is only needed to be invested at one time, and long-term and stable treatment can be realized by expending low maintenance cost and electric cost in the following years; the longer the use time is, the lower the average treatment cost of per ton of wastewater is; and the methodcan be widely applied to sewage treatment enterprises.
Owner:HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
Membrane up-flow aerobic bioreactor (MUAR)
InactiveCN102491510AImprove transfer efficiencyIncrease contactTreatment using aerobic processesSustainable biological treatmentPolypropyleneBioreactor
The invention discloses a membrane up-flow aerobic bioreactor (MUAR), which is used for increasing the oxygen charging efficiency of the reactor through ultrafine air bubbles to lower the running energy consumption of the reactor and belongs to the technical fields of environmental engineering and sewage treatment. In the reactor, water is fed in an up-flow way; an ultrafine air bubble generating device consisting of a jet aeration spray head, a decompression cabin and a polypropylene millipore filter pipe is used for generating ultrafine air bubbles (5-10 mum in diameter) which are fully mixed with inflow water from bottom to top; the upper part of the reactor is provided with a muddy water baffle plate for isolating sludge; and outflow water reflows and enters the ultrafine air bubble generating device. Due to a small specific surface area and collision and Brownian motion among molecules, the ultrafine air bubbles can be partially precipitated in water, so that higher oxygen transfer efficiency than that of ordinary air bubbles is achieved, and the ultrafine air bubbles are better combined with sludge at the bottom of the reactor. Compared with a reactor of the same type, the reactor disclosed by the invention has the advantages that: pollutants in bottom inflow water of the reactor can be degraded effectively, and the aim of reducing running cost is fulfilled finally.
Owner:江苏天马环保科技集团有限公司
Microbial agent with high salt resistance, and preparation method and application thereof
InactiveCN108118008AEfficient removalImprove removal rateBacteriaMicroorganism based processesHigh resistanceStaphylococcus cohnii
The invention relates to a microbial agent with high salt resistance. The microbial agent comprises at least one of selected from a group consisting of Paracoccus sp. FSTB-2, Microbacterium kitamienseFSTB-4 and Pseudomonas stutzeri FSTB-5, also comprises Kocuria palustris FSDN-A and Staphylococcus cohnii FSDN-C, and further comprises at least one of selected from a group consisting of Arthrobacter creatinolyticus FDN-1 and Flavobacterium mizutaii FDN-2. The invention also discloses a preparation method and application of the above microbial agent. The microbial agent can be directly used fortreating total nitrogen and COD in high-salt wastewater, and can also be added to various biochemical reaction structures to improve microbial composition, optimize the salt tolerance of a microbial system in wastewater treatment and enhance the capability of the system in removing total nitrogen and COD.
Owner:CHINA PETROLEUM & CHEM CORP +1
Biochemical treatment method of industrial wastewater and aerobic tank
ActiveCN104724826AGood removal effectImprove the effect of biochemical treatmentFatty/oily/floating substances removal devicesTreatment using aerobic processesIndustrial waste waterWater quality
The invention discloses a biochemical treatment method of industrial wastewater and an aerobic tank. The biochemical treatment method of industrial wastewater comprises a multifunctional denitrification tank and an aerobic tank. An HSBEMBM environmental management microbial preparation is added to both the multifunctional denitrification tank and the aerobic tank; mixed liquid in the aerobic tank partially returns to the multifunctional denitrification tank, the aerobic tank is provided with a plurality of return openings in the flow direction of the aerobic tank and the return openings are all communicated with return pipelines, wherein the return opening at the tail end is normally open. The aerobic tank adopts an S-shaped corridor so that water flows in the corridor. The aerobic tank is mainly responsible for decarburization and partial nitrification. The plurality of return openings are arranged in the corridor in the aerobic tank so that the return positions and return quantity are adjusted according to the inlet water quality and the operation condition of the whole system. Due to arrangement of the return openings, the different return positions and return quantity can be adjusted in time during the implementation process; therefore, high-efficiency denitrification is realized and COD is removed; moreover, the denitrification efficiency and the buffer resistance of the system are improved.
Owner:浙江汉蓝环境科技有限公司
Composite carbon source for deep denitrification of leather wastewater and preparation method thereof
InactiveCN111517481AImprove the effect of biochemical treatmentSolve the industry problem of insufficient carbon source for deep denitrificationWater treatment compoundsWaste water treatment from animal processingSodium acetateMicroorganism
The invention provides a composite carbon source for deep denitrification of leather wastewater. The composite carbon source comprises sodium acetate, carbohydrates, alcohol compounds, a nitrogen additive, a phosphorus additive and a trace element supplement. The invention also provides a preparation method of the composite carbon source for deep denitrification of leather wastewater. The composite carbon source provided by the invention can obviously improve the activity of denitrifying bacteria and other denitrifying microorganisms, enhance denitrification capacity and improve the biochemical denitrification effect of nitrogen-containing wastewater.
Owner:山东海景天环保科技股份公司
Anaerobic particle sludge rapid culture method suitable for oil refining and chemical engineering wastewater treatment
ActiveCN105198080AIncrease in microbial biomass per unit volumeSludge concentration and particle size are largeWaste based fuelTreatment with anaerobic digestion processesChemistryPetroleum
The invention relates to an anaerobic particle sludge rapid culture method suitable for oil refining and chemical engineering wastewater treatment. The method comprises the following steps: 1, domesticating: taking facultative sludge of a sewage treatment field biochemical technology as inoculation sludge, adopting a sodium acetate solution as an organic matrix in the initial culture stage, adding oil refining and chemical engineering wastewater to the organic matrix with the implementation of culture, and increasing the blending proportion of the oil refining and chemical engineering wastewater until the oil refining and chemical engineering wastewater is used as the complete organic matrix for culture; and 2, granulating: adding an polymer and turfy soil to domesticated anaerobic sludge in batches to promote granulation of the anaerobic sludge. The cultured anaerobic particle sludge obtained through the method has high concentration of microbes, large concentration and particle size, high organic volume load and hydraulic load, strong water quality and environment condition impact resistance and high organic pollutant degradation efficiency, and is especially suitable for anaerobic biochemical treatment of high concentration wastewater in the fields of petroleum and chemical engineering.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Micro-electrolysis treatment technology for chemical waste water
PendingCN107324619ATo achieve the purpose of decolorizationImprove biodegradabilityWater treatment parameter controlTreatment with aerobic and anaerobic processesPhoto catalyticSludge
The invention belongs to the field of chemical waste water treatment, in particular to a micro-electrolysis treatment technology for chemical waste water. The method comprises the five steps of pretreatment of the waste water, homogenizing treatment of the waste water, biochemical treatment, precipitation and discharge and sludge treatment. According to the micro-electrolysis treatment technology for the chemical waste water, before the biochemical treatment of the waste water, the pretreatment steps of micro-electrolysis, coagulation precipitation, photo-catalytic oxidation and the like are conducted, wherein chromophoric groups and auxochrome groups in the waste water are removed through the micro-electrolysis treatment to achieve a discoloration purpose, so that compositions of the waste water are converted to be likely to occur biochemical reactions, and the biodegradability is greatly improved. Through the coagulation precipitation treatment, Fe(OH)2 and Fe(OH)3 are generated and precipitated with nascent-state Fe<2+> and Fe<3+> in alkaline environment; in cooperation with a flocculant PAM, original suspended solids, colloid, oil and the like and partial water-soluble organic matter in the waste water are gathered, adsorbed and condensed in order to be separated and precipitated from the waste water. Through the adoption of the photo-catalytic oxidation, the removal rate of the organic matter in the waste water reaches 40% or above, the B / C is increased to 0.4 or above, and favorable conditions are created for the subsequent biochemical treatment.
Owner:云南今业生态建设集团有限公司
Biochemical treatment process of nitrocotton acidic wastewater
InactiveCN104193101AStrong impact resistanceEliminate pollutionMultistage water/sewage treatmentActivated sludgeWater flow
The invention belongs to the field of wastewater treatment, in particular relates to a biochemical treatment process of nitrocotton acidic wastewater, and is used for solving the technical problems of low biochemical efficiency, high cost and low discharge standard of a treatment method at present. According to the technical scheme, the biochemical treatment process comprises the following steps: feeding the nitrocotton acidic wastewater into an adjusting tank, neutralizing in a neutralizing tank, settling in a settling tank, adding neutral wastewater, enabling the wastewater to flow to an adsorption tank, discharging the wastewater to a setting tank I together with active sludge water in the adsorption tank, enabling supernatant in the settling tank I to flow into an aerobic tank 1# for treatment, enabling the supernatant to flow into a settling tank II for settling together with active sludge water in the aerobic tank 1#, enabling supernatant in the settling tank II to flow into an aerobic tank 2# for treatment, settling in a settling tank III, and discharging. According to the biochemical treatment process, the overall biochemical treatment effect is remarkably improved and the operating cost is greatly reduced.
Owner:SICHUAN NITROCELLULOSE CORP
Technology for deep-treating printing and dyeing wastewater by attapulgite catalyst
InactiveCN106630481AStrong purification functionImprove coagulation and sedimentation effectSludge treatmentTreatment with aerobic and anaerobic processesWater qualityHydrolysis
The invention discloses a technology for deep-treating printing and dyeing wastewater by an attapulgite catalyst. The technology comprises the following steps: collecting the wastewater after the first biochemical treatment to a regulating tank, sending to a coagulative precipitation tank after the water volume and water quality regulation, performing the coagulating sedimentation treatment to remove suspended matter and partial organic matter, sending the printing and dyeing wastewater to an anaerobic tank for acidized hydrolysis, hydrolyzing the macromolecular organic matter to the micromolecular organic matter so as to improve the biodegradability, treating the effluent by an anoxic-oxic method under the existence of the attapulgite, reaching the standard and discharging after removing the organic matter, the chromaticity and the ammonia nitrogen. The technology is capable of effectively improving the biochemical reaction efficiency and organic matter degradation ability, and reducing the wastewater treatment cost. The process operation is convenient.
Owner:安徽政涛环保科技有限公司
Low-concentration refractory chemical wastewater treatment method and system
PendingCN111762969AEasy to handleImprove catalytic performanceWater treatment compoundsWater contaminantsActivated charcoal powderActivated carbon
The invention relates to the field of wastewater treatment systems, and especially relates to a low-concentration refractory chemical wastewater treatment method and system. The method comprises the following steps: collecting and adjusting wastewater, and adding activated carbon powder and magnetic iron powder into a pool; carrying out heterogeneous catalytic oxidation: carrying out heterogeneouscoupling catalytic oxidation through ozone, hydrogen peroxide, activated carbon powder and magnetic iron powder; carrying out biological adsorption oxidation; and carrying out magnetic coagulative precipitation. According to the low-concentration refractory chemical wastewater treatment method, physicochemical and biochemical combined treatment is adopted, the activated carbon / magnetic iron powder penetrates through the whole system process, the whole-process adsorption micro-electrolysis environment is achieved, the treatment effect is enhanced, pollutants are enriched in a limited mode by adding the activated carbon / magnetic iron powder into the water collection adjusting tank, and subsequent stage treatment is facilitated.
Owner:北京新林环境科技有限公司
Biomass gasification wastewater treatment method and device
PendingCN106517676AEasy to handleReduce poisonFatty/oily/floating substances removal devicesWater contaminantsWater qualityCatalytic oxidation
The invention discloses a biomass gasification wastewater treatment method and device. The treatment method comprises the following steps: (1) pretreatment: performing oil removal treatment, first coagulation treatment, flotation treatment and first ozone oxidation treatment on biomass gasification wastewater to obtain first effluent water; (2) biochemical treatment: sequentially performing anaerobic treatment and A / O (anoxic / oxic) biological catalytic oxidation treatment on the first effluent water, and collecting second effluent water; and (3) advanced treatment: sequentially performing second coagulation treatment and membrane separation treatment on the second effluent water to obtain up-to-standard effluent water. The device comprises an oil removal device, a first coagulation device, a flotation device, a first ozone oxidation treatment device, an anaerobic treatment device, an A / O biological catalytic oxidation device, a second coagulation device and a membrane separation device which sequentially communicate with each other. The method and device have the characteristics of favorable wastewater treatment effect and high anti-shock loading capability, and can effectively treat biomass gasification wastewater; and the treated effluent water has favorable water quality.
Owner:GO HIGHER ENVIRONMENT GRP CO LTD
High-efficiency pre-aeration aerobic biochemical sewage treatment system
InactiveCN101585643AEasy processing conditionsImprove the degree of purificationMultistage water/sewage treatmentSustainable biological treatmentBiochemical engineeringAtmospheric air
The invention relates to a high-efficiency pre-aeration aerobic biochemical sewage treatment system, which comprises a bar screen, a primary sedimentation tank, a venturi, a splash board, an aerobic tank and a secondary sedimentation tank connected in turn, wherein the bar screen is positioned in the front of the primary sedimentation tank; the inlet of the gradually reducing part of the venturi is connected with the upper part of the primary sedimentation tank through a high-pressure pump, the throat part is connected with the atmosphere through an air inlet pipe, and the outlet of the gradually expanding part is provided with a jet pipe extending forwards; the splash board is positioned in the front of the jet pipe and above the aerobic tank; a fixed packed bed is arranged in the aerobic tank; and the secondary sedimentation tank is positioned behind the aerobic tank and is connected with the water outlet of the aerobic tank. The high-efficiency pre-aeration aerobic biochemical sewage treatment system has the advantages of simple structure, convenient operation, good adaptability, high oxygen content in the sewage and good purification effect, and is mainly adapted to the treatment of domestic sewage.
Owner:HAISIBOTE BEIJING SCIENE & TECH
Salt-tolerant microbial agent and preparation method thereof
ActiveCN103374524BSimple compositionImprove the effect of biochemical treatmentBacteriaMicroorganism based processesBiotechnologyStaphylococcus cohnii
The invention discloses a salt-tolerant microbial bacterial agent and a preparation method thereof. The microbial bacterial agent contains Staphylococcus coli FSDN-C, Arthrobacter FDN-1, Flavobacterium waterii FDN-2, Paracoccus denitrogeni DN-3 and Methylobacterium sdn-3. The microbial bacterial agent can realize the removal of ammonia nitrogen, total nitrogen and CODcr in the same reactor, has good wastewater treatment effect, and can realize short-range nitrification and denitrification or simultaneous nitrification and denitrification denitrification while removing COD. Staphylococcus koshii FSDN-C can utilize a variety of carbon sources and has a certain salt tolerance, which can be used in the treatment of high-salt wastewater. At the same time, the strain can secrete a substance to enhance sludge flocculation under environmental stimulation sex. This further broadens the scope of application of the microbial agent.
Owner:CHINA PETROLEUM & CHEM CORP +1
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