294 results about "Aerobic organism" patented technology

The invention relates to an ecological greenbelt treatment process for treating rural domestic sewage, which mainly comprises the steps of: (1) anaerobic pretreatment: performing anaerobic hydrolysis pretreatment to domestic sewage; (2) artificial wetland treatment: performing artificial wetland treatment to pretreated domestic sewage; and (3) shallow ecological pond aerobic biotreatment: further performing shallow ecological pond aerobic biotreatment to outlet water treated by the artificial wetland, degrading and converting organic matters and nutrients entering the pond, and recycling purified sewage as a regenerated water resource. The invention adopts an ecological greenbelt treatment system comprising the anaerobic pretreatment, the artificial wetland and the shallow ecological pond to treat the rural domestic sewage, and has the characteristics of good treatment effect, recycling on site, low investment, low system operating cost, simple maintenance, obvious ecological benefit and the like.

The invention discloses an urban sewage treatment system and purification method and belongs to the technical field of sewage treatment. The sewage treatment and purification method comprises the steps of collection, physical precipitation, chemical precipitation, anaerobic biological treatment, anoxic biological treatment, aerobic biological treatment, adsorption, disinfection, ultrafiltration membrane filtration and sludge treatment in sequence. According to the method, a physical precipitation method, a chemical precipitation method and a biological purification method are used comprehensively to perform step-by-step classification treatment on different pollutants, the purification efficiency is high, the effluent quality is good, the nitrogen and phosphorus treatment capacity is higher, operation and maintenance are convenient, management is simple, and popularization and use can be realized.

A deeply sewage treating method and apparatus without sludge discharging is disclosed by means of the physical, chemical and biological methods. Proper sewage treating agent with powerful adsorbing capacity, organic matter decomposing and oxidizing capacity and settling capacity is selected based on the quantity of sewage and pollutant characteristic of the sewage to be treated. Sewage is treated through an integrative function tank that comprises a grille primary tank (1), a settling tank (2), high concentration aeration tank (3), aerobic biological tank (4), anaerobic sludge returning tank (5), a sludge and cleaning water separating tank (6), separating tank (7), and pouring tank (8). Sewage is subjected to physical filtering, chemical regulation of pH value, aerating, biological treatment, settling and filtering, so that organic pollutant is converted into microbe that is oxidized and decomposed into CO2, H2O, NH3 and small amount of excess sludge for inside circulating treatment. The treated water reaches the draining standard.

The invention relates to a two-chambered alga microbial fuel cell and treatment wastewater method of low energy consumption thereof, belonging to the field of wastewater treatment. The invention resolves the problem that the current aerobic biological treatment process has large energy consumption and high cost because of adopting the imposed aeration. An anode chamber of two-chambered alga microbial fuel cell is connected with a cathode chamber thereof through a diaphragm; a vacuum pad is arranged on the position among the diaphragm, the anode chamber and the cathode chamber; the anode chamber is provided with an anode and the cathode chamber is provided with a cathode; the anode and the cathode are connected with an external circuit by a lead wire, wherein the external circuit is positioned outside the two-chambered alga microbial fuel cell. The method comprises the following steps: firstly, a reactor is started; secondly, the wastewater enters into the cathode chamber and the anode chamber, the microorganism degrades to metabolize organics and simultaneously gets electrical energy under the room temperature; cathode alga provides oxygen for the cathode chamber by the photosynthesis. The alga microbial fuel cell can be the main structure of wastewater and aerobic treatment, which can replace the roles of an aeration tank, a biological filter, an aeration oxidation pond and the like in a wastewater treatment factory so as to reduce the energy consumption of the aerobic biological treatment.

The invention is a pollutant aerobic-biodegradation breathing measuring method and device, relating to a method and device for measuring oxygen utilization ratio in the course of processing waste water by aerobes. And the measuring method comprises the steps of: checking dissolved oxygen sensor, keeping temperature of water tank constant, putting in microbial mixed solution, blending, circulating mixed solution, setting parameters, putting in to-be-measured sample and calculating; and the measuring device comprises water tank, magnetic blending mechanism, aeration mechanism, aeration chamber, breathing chamber, measuring chamber, pH sensor, dissolved oxygen sensor, signal transmit lines, transducer terminal box, computer and oxygen utilization ratio measuring software. And the invention has advantages of less interference, high testing accuracy and frequency, high instrument automation degree, etc. and it is applied to the aspects of city sewage composition characterization, inlet water toxicity detection, evaluation and early- warning in sewage factory, process control and operation management in sewage factory, etc.

The invention discloses a solar power nitrogen and phosphorus removal biological box array used for in-situ purification for eutrophic slow flow water body. The biological box array uses longitudinal array or other array combination, and the biological box array is composed of different functions of biological box monomers with similar shape. The biological box monomer comprises a body framework, a floating body, a photovoltaic power system, an aeration or flow pushing facility and a biological box; the biological box body is a stainless steel box body or a plastic mesh cage, and combined biological carrier is filled in the box body. The biological boxes are divided into aerobic biological boxes and anoxic biological boxes which are combined into the array in a certain mode. An aeration plate is arranged at the bottom of each aerobic box body, and the arrangement of the flow pushing facility is determined according to the water flow. The solar power nitrogen and phosphorus removal biological box array used for the in-situ purification for the eutrophic slow flow water body uses the combined biological carrier with special proportion and uses step-by-step nitrification and denitrification, the filler use ratio can be effectively improved, and accordingly the purification efficiency can be improved. The solar power nitrogen and phosphorus removal biological box array does not depend on the plant, and the disadvantage that a plant type floating island is difficult to manage is avoided. The solar power nitrogen and phosphorus removal biological box array is not limited by the power supply condition by means of using solar clean energy.

A process for treating sewage by A2N denitrifying to remove P includes pumping sewage in anaerobic pool, discharging the muddy water in medium deposition pool, discharging the supernatant in aerobic biomembrane mitrifying pool and the sludge in anoxic pool, discharging the water from said nitrifying pool to anoxic pool, discharging water from anoxic pool to high-speed aerating pool for absorbing residual P, pumping water in final deposition pool, draining the treated water, and pumping part of sludge back to anaerobic pool.

The invention discloses a traditional Chinese medicine extraction wastewater treatment system. According to the invention, a ''pretreatment+hydrolytic acidification+anaerobic treatment+aerobic treatment+Fenton treatment'' combined biological treatment process is adopted. The anaerobic biological treatment process has advantages of low energy consumption, high removal rate and effluent stability. The aerobic biological treatment process has advantages of low investment, mature technology, high efficiency and stable and reliable treatment effect. The system provided by the invention comprises a pretreatment unit, a hydrolytic acidification unit, an anaerobic treatment unit, an aerobic treatment unit and a Fenton treatment unit which are connected in order. The pretreatment unit comprises an equalizing tank I and an equalizing tank II which are connected in series. The hydrolytic acidification unit is a hydrolytic acidification tank. The anaerobic treatment unit is a high-efficiency anaerobic reactor. The aerobic treatment unit is a bio-contact oxidation tank. The Fenton treatment unit is a Fenton reaction tank. A secondary sedimentation tank is arranged between the bio-contact oxidation tank and the Fenton reaction tank which communicates with a clean water tank through an air floatation machine.

The invention discloses an advanced treatment method for production waste water of an acrylic acid and ester device, belonging to the technical field of treatment of organic waste water. A combined treatment process consisting of aldehyde removing treatment, coagulating and depositing two-section pretreatment, anaerobic treatment, aerobic biological secondary treatment, ozone catalytic oxidation and active carbon advanced treatment is adopted, so that the problem of advanced treatment of the production waste water of the acrylic acid and ester device is solved, and effluent can reach a national first class discharge standard of Comprehensive Sewage Discharge Standard (GB8978-96). In the combined process, biological treatment is taken as a main body, so that treatment cost on waste device of the acrylic acid and ester device can be reduced greatly.

The invention discloses a method for processing the leachate liquid of the landfill field of municipal refuse, which belongs to environmental protection technical field and comprises the following steps: pumping the leachate liquid into an ultrafiltration system, and the condensation liquid from barrier separation can be used for separating producing the humic acid organic liquid fertilizer, making the penetrant liquid enter a biological film nitrating and denitrifying system to remove nitrogen and organic matter. The said biological film nitrating and denitrifying system is made up of a composite anaerobic organism reactor and a two-stage aerobic organism reactor. The outlet water from the said biological film nitrating and denitrifying system enters a coagulating sedimentation tank to purify the biological film and macromolecule water-soluble organic molecule from the said biological film nitrating and denitrifying system.

The invention relates to an oxygen releasing material for permeable reactive barrier aerobic biodegradation of groundwater, which comprises the following components in percentage by weight: 5-20% of oxygen releasing compound, 5-20% of bentonite and the balance of coagulant. The oxygen releasing material added with the bentonite has the advantages of large oxygen releasing amount, long oxygen releasing time, low cost and easy preparation; and moreover, the used materials are all natural and easy to obtain and do not cause secondary pollution to the groundwater environment, thereby remarkably improving the in situ bioremediation technology of the contaminated groundwater.

The main purpose of the present invention is to provide solid-chemical compositions and methods and means for their use which specifically: (1) provide for a sustained release of active oxygen and complex inorganic phosphates; and (2) create, enhance, and maintain oxidizing and aerobic conditions which favor non-exothermic, chemical-oxidation processes and aerobic bioremediation and fungal bioremediation processes. The present invention discloses advanced solid-chemical compositions and methods for the non-exothermic chemical oxidation and aerobic and fungal biodegradation of organic compounds and certain inorganic contaminants which may be present in solid and liquid wastes, sludges, leachates, acid-mine drainages, waste waters, soils, sediments, ground waters, surface waters, and other environmental media. The preferred embodiments of the disclosed solid-chemical compositions are prepared and used in the forms of granules, briquettes, tablets, capsules, pellets, and the like, which among other advantages, are easier to handle and apply under typical field conditions. These preferred forms of the disclosed chemical compositions can be made to disintegrate subsequent to their application and / or upon contact with water in a significant and predictable manner via relatively minor variations in their formulation and manufacture. This improved functionality enables the time-dependent release profile(s) of the active-oxygen sources and other ingredients to be varied so as to optimize the remediation of contaminants based on site-specific factors or factors pertaining to the specific waste-stream, media and / or the contaminants therein. Organic contaminants which can be treated using this invention include many different types of petroleum products, and more recalcitrant contaminants such as PCBs, PAHs and pesticides can be degraded by using the disclosed compositions and methods to stimulate fungal biodegradation processes. This invention can also be used to treat inorganic contaminants such as the acids and metals present in acid-mine drainage (AMD).

The invention relates to a method and a device for sewage treatment, and relates to the field of waste water treatment. The invention aims to improve a denitrification effect of secondary effluent of a sewage treatment plant and reduce operating energy consumption. The method comprises the following steps of: introducing sewage into an ozone catalytic oxidation tower to perform catalytic oxidation; introducing water discharged from the ozone catalytic oxidation tower into an anoxia biofilter; and introducing the water treated by the anoxia biofilter into an aerobic biofilter, wherein the injected water is subjected to the degradation of concentration of organic matters and the nitration of ammonia nitrogen by a biomembrane grown on the surface of a porous light filler inside the aerobic biofilter, so that the concentration of the organic matters in the water reaches an effluent discharge index. The invention also provides a device for realizing the method. The device comprises two biofilters, a high-pressure fan and an ozone catalytic oxidation tower. By the method and the device, denitrification can be realized effectively, and secondary pollution can be avoided.

The present invention relates to one kind of underground silo type high temperature aerobic biofermenting deodorizer and its method of degrading organic stench waste compost. The underground silo has ventilating pipes connected to one main ventilating pipe in the bottom, and water filtering ditches communicated to ventilating ditches separately. The organic stench waste is decayed to form compost in the underground silo through the first biologically pre-treatment in the underground silo for 5-8 days and the secondary fermenting in a secondary fermenting unit for 12-28 days. The present invention can obtain compost with rich humus and no bad smell.

The invention relates to a method for improving AAO treated dyeing wastewater and a device thereof. The device comprises an anaerobic reactor, a primary settling tank, an anoxic reactor, an aerobic reactor and a secondary settling tank, wherein the anaerobic reactor is communicated with the primary settling tank, the anoxic reactor, the aerobic reactor and the secondary settling tank through pipelines in sequence; the primary settling tank is communicated with the anaerobic reactor through a sludge pump by a return pipe; the aerobic reactor is communicated with the anoxic reactor through the sludge pump by the return pipe; and the secondary settling tank is communicated with the aerobic reactor through the sludge pump by the return pipe. The method comprises the following steps: controlling the reflux ratio of sludge to be maintained at 100 percent and the reflux ratio of mixed solution to be 100 percent without sludge discharge at environmental temperature of between 20 and 30 DEG C, wherein preferably, retention period of an anaerobic unit is 6.5 hours, retention period of an anoxic unit is 6.5 hours, and the retention period of an anoxic unit is 16 hours; and then discharging water. The method and the device are organically combined with anaerobic, anoxic and aerobic biological treatment methods to achieve advantage complementation with one another.

The invention discloses a high-concentration organic wastewater treatment method and equipment special for the same. The wastewater treatment method includes: adjusting pH of organic wastewater to be treated to acidic; subjecting the organic wastewater sequentially to microelectrolysis treatment, Fenton reagent treatment, flocculation precipitation, anaerobic biological treatment and aerobic biological treatment; subjecting treated wastewater to coagulating precipitation, and discharging supernatant, wherein a regularized Fe / Al / C multi-element microelectrolysis filler is adopted in the microelectrolysis treatment process. The equipment comprises a pH adjusting tank, a microelectrolysis reactor, a Fenton reactor, a flocculation precipitation tank, an anaerobic filter column, an aerobic filter column and a secondary precipitation tank which are connected sequentially, and further comprises a reagent adding system adding a pH adjuster and hydrogen peroxide respectively into the pH adjusting tank and the Fenton reactor, and the microelectrolysis reactor is filled with the regularized Fe / Al / C multi-element microelectrolysis filler. By adopting the wastewater treatment method and the equipment, biodegradability of the wastewater can be improved greatly, and quality of outgoing water can be improved remarkably.

The invention discloses a rural domestic sewage treatment system suitable for the northern part of China and a technology thereof. The system consists of a sewage anaerobic hydrolysis tank, an aerobic biological filter, a horizontal subsurface flow artificial wetland, a water pump and pipes, wherein the aerobic biological filter comprises an atomization nozzle and a light filter material; the horizontal subsurface flow artificial wetland comprises water plants, a dephosphorization filler and a liquid level controller. The sewage to be treated flows automatically into the anaerobic hydrolysis tank from a water inlet; and the treated sewage enters the aerobic biological filter, then enters the horizontal subsurface flow artificial wetland to be treated; and the effluent is discharged according to the standard. An efficient denitrification and dephosphorization technology is adopted in the system, an all-underground treatment facility is used and measures such as wetland liquid level controllable regulation are adopted, thus the operating cost can be reduced, the treatment efficiency can be increased, the efficient and stable operation can be realized in winter under a cold climate and a new rural domestic sewage treatment technology is provided for the northern part of China.

The invention discloses a method for removing total phosphorus in waste water through a chemical / biological reaction synergistic effect. According to the invention, the advantages of chemical phosphorus removal and biological phosphorus removal are combined, and the synergistic effect of chemical and biological phosphorus removal is adopted. The total phosphorus in the waste water is removed through discharging sludge formed by high-phosphorus-content sludge and phosphorus-containing precipitates mainly containing struvite in a preaeration tank. The method disclosed by the invention is simply operated; the removal rate of the total phosphorus is up 96.8%; when the total phosphorus is removed, parts (30-40%) of organic pollutants and nitrogen can be removed, so that the burdens of subsequent aerobic biological treatment and deep treatment can be alleviated.

The present invention discloses a hydrolization and acidification - anaerobism and aerobism coupling biochemical degradation system, which belongs to the technical field of environment engineering and industrial waste water disposal. The system is used for disposing organic waste that is difficult to be degraded. The biochemical degradation system consists of two serially connected airlift internally circulating biological fluidized beds. The front airlift internally circulating biological fluidized bed is an anaerobe fluid bed which adopts micro-aeration operation and carries out hydrolization and acidification processing; and the rear airlft internally circulating biological fluidized bed is an anaerobism and aerobism coupling biological fluid bed which is constructed by filling macropore carriers and carries out the complete degradation of organisms. The organic waste water which is difficult to be degraded enters the anaerobic fluid bed first, and enters the anaerobism-aerobism coupled biological fluid bed after the hydrolization and acidification processing so as to be completely degraded. The system achieves high efficiency and quick coupling of the anaerobe degradation and the aerobe, and has the characteristics of high disposing efficiency, short residence time, small floor space, low investment, low running cost and so on. The method can be applied to the sequencing batch type disposal process, and can be applied to the continuous flow type disposal process as well.

The invention provides a method and a system for drying aerobic organisms in urban raw garbage by the aid of hot air. Organic matters in the urban raw garbage are decomposed into moisture and other inorganic matters by the aerobic microorganisms in the urban raw garbage with high-temperature biological conditioners by the aid of oxygen provided by the hot air and a formed high-temperature environment, heat is released, most of the moisture is heated and evaporated into steam by the high-temperature environment and the heat, the steam is exhausted in a wet and hot waste gas form, garbage leachate is formed by an additional part of the moisture and drained, and the purpose of drying the aerobic organisms in the urban raw garbage is achieved. The system comprises an urban raw garbage aerobic organism drying bin, a hot-air auxiliary drying device, an air feeder, an exhaust fan, a liquid delivery pump and the like. The method and the system further can be optimized by means of automatic control, waste gas preheating, photocatalytic sterilization and deodorization and the like. The method and the system for drying the aerobic organisms by the aid of the hot air have the advantages that the decomposition degree of the organic matters in the urban raw garbage and moisture evaporation capacity are high, a drying process is short, a drying effect is obvious, and the garbage is treated in a harmless, reducing and stable manner.

The invention discloses a self-sustaining smoldering and aerobic biological fermentation composite disposal process and equipment for sludge, belongs to related technical processes in the field of domestic waste disposal, and mainly aims at harmless resource disposal of the municipal sludge and other high-water-content low-calorific-value organic wastes. The self-sustaining smoldering and aerobicbiological fermentation composite disposal process for the sludge is characterized in that two disposal technologies of self-sustaining smoldering and aerobic fermentation composting are combined, sothat the sludge disposal capacity is improved, the energy consumption in the aerobic biological fermentation process is reduced and advantage complementation among the technologies is realized; and sludge ashes generated by smoldering and organic fertilizers generated by fermentation can be combined for use, so that the sludge disposal rate is increased, meanwhile, the energy consumption of a sludge disposal system is reduced, the biological fermentation period is shortened, and the diversity of sludge resource products is improved.

The invention relates to a processing method for recovering the organic waste water exhausted from the dimethyl enther procedure to be used for industry circulation cooling water, and adopts the integrated system technique of anoxic activated sludge pool-anoxic biological contact oxidation pond-oxygen biological contact oxidation pond-coagulation sedimentation tank-oxygenrich biological activated carbon filtrating pool-UV bactericidin disposal technique. The biological contact oxidation pond adopts a biological filling and micropore aerating system. The anoxic biological contact oxidation degrades the organic matter under the condition of DO is 0.5 to 1.0 mg / L, and the oxygen biological contact oxidation effectively eliminates CODcr under the condition of the DO is 2 to 4mg / L. The outputted water from the oxygen biological contact oxidation pond is used for eliminating the suspended matter by coagulating and precipitation, and further is deeply processed through oxygenrich biological activated carbon filtrating pool to eliminate suspended matter and organic matter, and is finally sterilized through uv to be repeatedly used as circulation cooling water makeup water. Compared with the normal anaerobic technique, the anoxic biological processing technique eliminates the producing of the peculiar smell of H2S, and compared with the aerobic technique, the aeration quantity is reduced, the powder consumption is saved, and the anoxic biological processing technique is a new technique of biological processing. The method has the advantages of simple operation, low running expenses, small device investment and zero exhausting of waste water, and without secondary pollution.

The invention discloses an activated sludge-biofilm reactor for treating ammonium-nitrogen organic wastewater. The main structure is that a distribution reservoir is connected with a water inlet of an activated sludge reactor by a water pump, a sludge outlet is arranged at the bottom of the reactor, an aeration device is arranged above the sludge outlet inside the reactor, an agitator is arranged above the aeration device, a water outlet of the reactor is connected to the water inlet of an aerobic biofilm reactor by the water pump, a sludge outlet is arranged at the bottom of the aerobic biofilm reactor, an aeration device is arranged above the sludge outlet inside the aerobic biofilm reactor, an aerobic biofilm is grown on fillers inside the aerobic biofilm reactor, the aerobic biofilm reactor is respectively provided with two water outlets, wherein a first water outlet is connected to a discharge tank and a second water outlet is connected to the distribution reservoir, and an aerator is connected with the aeration devices of the activated sludge reactor and the aerobic biofilm reactor, respectively. The invention further discloses a method for treating ammonium-nitrogen organic wastewater.

The invention pertains to a method for treating an effluent to be treated in order to reduce its phosphates content, said method comprising a step of anoxic biological treatment of said effluent to be treated, producing a first effluent, a step of aerobic biological treatment of said first effluent, producing a second effluent, a step of recirculating at least a part of said second effluent to the inlet of said anoxic biological treatment step, a step of liquid / solid separation of at least a part of said second effluent, producing a treated effluent and a first denser effluent, a step for producing volatile fatty acids including a wet heat treatment, at a temperature of 100° C. to 350° C., for a residence time of between 10 and 180 minutes, of at least a part of said first denser effluent, a step of anaerobic biological treatment of at least a part of the effluent coming from said wet heat treatment step, and a step of recirculating at least a part of the effluent coming from said anaerobic biological treatment step to the inlet of said anoxic biological treatment step.

The invention discloses a rural domestic sewage reutilization treatment device. The rural domestic sewage reutilization treatment device comprises a methane tank, a grating pretreatment unit, a buried aerobic tank, an aerobiont filter tower and a subsurface flow contructed wetland, wherein methane generated in the methane tank is subjected to denitrification and sulfate reduction under an anaerobic condition; the methane serves as a carbon source to intensify anaerobic biochemical treatment; the treatment efficiency can be improved by virtue of a warming function of the methane; and backflow is formed behind a tower-type biofilter, so that the denitrification percent is improved. The rural domestic sewage reutilization treatment device can be used for effectively removing organisms and efficiently removing nitrogen and phosphorus, occupies small floor area, is low in operation cost, can be adaptive to local conditions, and can reutilize wastes.

The invention disclosure is a method of bioremediation of wastewater, particularly groundwater, by utilizing coupled anaerobic and aerobic biological treatment, more specifically, methanogenic (strictly anaerobic) and methanotrophic (strictly aerobic) microbial populations, in combination with a supply of in-situ generated water-dissolved oxygen and hydrogen. Water electrolysis is used to produce water-dissolved oxygen and hydrogen. The immediate advantage of using H2 from the electrolysis is to provide electron donors to methanogens to reductively dechlorinate the chloroaliphatics, and to reduce the water carbonates and generate methane which is used as energy and carbon source for the methanotrophic bacteria. Oxygen is used as electron acceptor by the aerobic bacteria, including the methanotrophs. The addition of an organic carbon source can be minimized or even eliminated, so as to diminish the competition between methanotrophic bacteria and heterotrophic bacteria for oxygen.

The invention discloses a sewage treatment device and method based on a helotism electrochemical system. According to the invention, an H-type microbial fuel cell structure is adopted; a cathode chamber and an anode chamber are connected through a proton exchange membrane; an anode electrode is made of a carbon felt material, and an anaerobic microbial membrane is attached to the surface of the anode electrode; a cathode electrode is a titanium-plated ruthenium-iridium mesh electrode, a microalgal biological membrane is attached to the surface of the cathode electrode, and an aerobic biological membrane is attached to a middle filler; and a capacitor is arranged between the cathode and the anode. When microalgal photosynthesis is stopped at night, electric energy stored in daytime is released to drive the device to operate, so continuous and efficient removal of pollutants and effective recovery of microalgae are realized. By coupling the helotismsymbiotic system and the microbial fuelcell, nitrogen, phosphorus and organic matters in the sewage are synchronously removed; the device and the method have the characteristics of low treatment cost, simple operation process and high energy utilization rate, and the defects of time consumption and power consumption of the traditional sewage treatment technology and the problems of low power generation efficiency and poor treatment efficiency of common microbial fuel cells are overcome.