244 results about "Anaerobic aerobic" patented technology

Ar anaerobic-aerobic reactor for preparing composit is composed of fermentor, ventilation system, stirring system, and heating system. The said fermentor has a sieve plate to divided it into thepartsand a stirring axle driven by motor. Its fermenting chamber is a sealed unit with circulating water both jacket for heating it and liquid inlet and outlet, and features that the anaerobic digestion and aerobic reaction are conduted in a single equipment.

The efficient sequencing batch type air lifting circular flow waste water treating bioreactor in alternative anoxia-anaerobic-aerobic process includes one squared or cylindrical reactor unit, one water inlet unit and one water outlet unit as well as one aerating system. The reactor unit includes one reactor body, one triphase separator, conic bottom, air lifting circular flow guide tube and upper deflecting baffle. The present invention also discloses corresponding technological process. By means of the sequencing batch type air lifting circular flow waste water treating bioreactor and the corresponding technological process, double target of oxidizing non-degradable organic pollutant and biological denitrification may be reached in the same reactor, the treated high concentration non-degradable nitrogenous industrial organic waste water may reach the drainage standard, and the residual sludge amount may be reduced by over 80%.

The present invention is the anaerobic treatment, aerobic treatment and membrane treatment process of domestic garbage percolate, and belongs to the field of sewage treating technology. The combined treating process is completed in four units including a two-stage upwards flowing anaerobic sludge bed, an immobilized microbial biological aeration filter, a coagulating and settling pond and a nanometer filtering membrane. The present invention has the advantages of simultaneous elimination of carbon, nitrogen and other pollutants, high treating effect, high load impact resistance and high stability. The present invention may be also applied in treating other waste water with high ammonia nitrogen content, high organic pollutant concentration and great water quality fluctuation.

This invention belongs to new style green technology region, concretely relates to a method of using sludge organic matter to advance biologic dephosphorization effect of sewage. Excess sludge at basicity condition is carried out anaerobic fermentation to produce organic acid; adopt guano precipitation means to reclaim nitrogen and phosphorus of organic acid; add the treatment fluid after reclaiming nitrogen and phosphorus to municipal sewage, under anaerobic-aerobic condition aerobic conditito carry out biological sewage treatment,through solid-liquid separation, the out water reaches the mark and is discharged. This invention through the method of adding excess sludge broth to sewage, not only advance the ability of microbe of synthesizing poly- hydroxy valeric acid(PHV)under anaerobic condition, advance availability of poly- hydroxy eicosanoic acid, decrease glycogen metabolization quantity, in favor of maintaining higher dephosphorization effect at aerobic condition, reduce phosphorus concentration in the out water, prevent water substance eutrophication occurring, but also decrease sludge volume, thereby decrease sludge treatment cost and pollute to environmental.

The invention discloses a method for processing dye wastewater, comprising the following steps of: injecting dye wastewater which undergoes a pretreatment into a nanofiltration water inflow tank for nanofiltration to form a nanofiltration concentrated solution with a smaller volume and a nanofiltration dialysate with a larger volume; diluting the nanofiltration concentrated solution to decrease the salt content and then carrying out an anaerobic-aerobic treatment; and carrying out an activated carbon adsorption treatment on the nanofiltration dialysate. In allusion to the features of high salt content and high COD concentration in the dye wastewater, the pretreatment is performed at the front end to reduce part of COD loads, and the nanofiltration technology is adopted at the back end to separate the salt in sewage from organic matters; the concentrated solution with high concentration of organic matters is diluted to reduce COD, simultaneously decrease the salt content and carry out the anaerobic-aerobic biochemical process so as to complete the processing of the sewage. As it is tested that the COD of the dialysate is low, the dialysate undergoes the activated carbon adsorption to directly discharge salts; absorbed organic matters undergo activated carbon desorption and regeneration process as well as biodegradation. The part of wastewater has been desalinized, thus not influencing the biochemical process.

The invention relates to a multi-mode constant-water-level sequencing batch active sludge sewage treatment method and system, belonging to the technical field of sewage treatment. The system comprises a sludge concentration pre-anoxic pond, an anaerobic pond, an anoxic pond, an aerobic pond, a facultative pond and a sequencing batch pond which are communicated, wherein the facultative pond runs in an aerobic or anoxic way. According to the system, multi-mode sewage treatment ways including an anaerobic-anoxic-aerobic mode, an anoxic-anaerobic-aerobic mode and an anaerobic-anoxic-aerobic-anoxic-aerobic mode can be performed. Due to the adoption of the sewage treatment method, the removing effects of nitrogen, phosphorus and organic matters can be enhanced, and equipment utilization ratio is increased.

A process is provided for increasing the production of PHA in a mixed culture biomass. In a first stage of the process, organic material associated with a substrate is converted to volatile fatty acids. In the case of a wastewater treatment process, if the wastewater includes sufficient volatile fatty acids (VFAs) to support the process, then it is unnecessary to convert organic material to VFAs. In a second stage of the process, an anaerobic-aerobic selection process is utilized to select glycogen accumulating organisms that cause these organisms to proliferate and dominate the open mixed culture biomass. By providing relatively high organic loading in the form of VFAs in the anaerobic treatment phase of the selection process, glycogen accumulating organisms having a relatively high level of stored glycogen are produced. In a third stage, the PHA accumulation process is practiced where the glycogen rich organisms are fed VFAs under anaerobic or aerobic conditions or combinations thereof. Through the consumption of externally supplied VFAs and internally stored glycogen, relatively high levels of PHA in the biomass are produced. Thereafter PHA is separated from the residual biomass.

The invention relates to a soil repair method for treating polychlorinated biphenyl pollutants, which comprises steps of greenhouse construction, anaerobic-aerobic alternated piling and plant repair, wherein the plant repair step comprises that: alfalfa for decomposing polychlorinated biphenyl and cocozelle for enriching the polychlorinated biphenyl are planted after the piled body is flattened, one-time plant repair time is controlled to be between 2 and 6 months, and the planted alfalfa and the planted cocozelle are directly returned to a field. The method repairs the soil by using anaerobic-aerobic alternated piling and plant repair modes, so different from a chemical method which produces new pollutants, the method has no pollution or damage to the repaired place; and the method is also different from obligate bacteria treatment technology for treating the soil. The soil repair method is an optimized soil repair method with low cost, no pollution and no damage to a soil ecologicalsystem.

The invention relates to a process for treating livestock and poultry breeding sewage entering the Lake Taihu. According to the designed and adopted treating process, the technology that primary precipitation and filtration, anaerobic-aerobic biochemical treatment, dosing flocculation and coagulation reactions and membrane module filtration are combined is mainly used, and a material method for adding a compound water treatment agent is adopted, so that efficient denitrification, dephosphorization and COD reduction functions are realized; meanwhile, the process has good decoloration and sterilization effects. According to the process, the operation cost and the management cost are low, the sewage treatment effect is good, and treated livestock and poultry breeding sewage can reach the state-specified first-class discharge standard for sewage treatment in Lake Taihu regions.

The invention discloses an anaerobic-aerobic combined biological processing method of waste water containing oil of a cold rolling mill, which solves the problems of complexity, high equipment invest, high running cost and unstable outlet water quality of the prior technology for processing waste water containing oil. Anaerobic processing and aerobic processing are orderly carried out to the waste water containing oil, and the parameter of every item is strictly controlled to enable the oil and COD concentrations of the waste water containing oil of cold rolling after second-stage processing to reach the first-grade discharge standard of integrated waste water discharge standards GB8978-1996. The invention has simple and convenient operation, stable running, good biochemical performance and low running cost.

The invented sewage treatment process includes the following steps: making the sewage pass through grill and collecting well firstly, then feeding it into cyclonic settling pin by means of water pump, and making it flow into anaerobic membrane bed to make annaerobic biological treatment, then making the anaerobic-treated sewage flow into aerated biological filter pool to make aerobic biological treatment, then feeding the sewage into flocculation precipitation reaction tank, and discharging it. Said invention uses anaerobic membrane bed and aerated biological fitler pool as main body, uses flocculation precpitation as auxiliary measure, its efficiency is high and technological process is simple, and its application range is extensive.

The invention relates to a coal gasification wastewater treating and recycling method and device. The coal gasification wastewater treating and recycling method comprises the following steps: carrying out medium-pressure steam stripping on coal gasification wastewater generated by coal pressure gasification, exchanging heat, preheating / cooling, sequentially carrying out shallow air-floatation, hydrolytic acidification, anaerobic-aerobic biological treatment, membrane biological reaction and ozone oxidation, adsorbing matters by using carbon, filtering by using multiple mediums, sequentially carrying out self-cleaning filtration, ultrafiltration, cartridge filtration, reverse osmosis and ion exchange adsorption, and feeding into a water feeding system of a high pressure boiler. The coal gasification wastewater treating and recycling method optimally combines various wastewater treatment methods and is used for solving the problems that after being treated, the coal gasification wastewater is difficult to reach the discharge standard, and the realization of zero discharge by recycling is difficult.

The invention provides a combination method of coal chemical industry wastewater treatment and relates to a coal chemical industry wastewater treatment method. The method aims at solving the problems of low biochemical degradation efficiency, low treatment efficiency and poor water outlet quality in the existing coal chemical industry wastewater treatment method. The method is realized through the following steps that coal chemical industry wastewater is firstly subjected to oil removal treatment through an oil separation pool; then, the coal chemical industry wastewater is introduced into a hydrolysis acidification tower, and organic substances difficult to degrade are decomposed; next, organic substances are treated and degraded through an anaerobic-aerobic fluidized bed coupling and biochemical system; and finally, the coal chemical industry wastewater is introduced into a coagulative precipitation pool for precipitation treatment, sludge is externally discharged, and effluent flows into a clean water pool. The invention provides a coal chemical industry wastewater treatment method which has the advantages of investment saving, good treatment effect and high process stability, and is applied to the coal chemical industry field.

The invention relates to an anaerobic-aerobic integrated microbial fuel cell wastewater treatment system. Facultative power-generating bacteria and facultative degrading bacteria are constructed in an anode chamber of a microbial fuel cell and the alternate anaerobic-aerobic operation mode is adopted, thus the aim of utilizing the anaerobic power generation of the organic matter and realizing aerobic degradation can be achieved. By adopting the system, the problem that when the past microbial fuel cell system utilizes organic wastewater to generate power, the degradation of the organic matter is not complete, can be overcome and the resource utilization and harmless emission of organic wastewater can be realized. The system has the following specific characteristics: the fuel cell system comprises a cathode chamber, the anode chamber, an anode in the anode chamber, a cathode in the cathode chamber, a diaphragm between the cathode and the anode and aeration headers arranged in the cathode chamber and the anode chamber; the facultative power-generating microorganisms are attached to the anode of the anode chamber, the facultative degrading microorganisms exist in the solution of the anode chamber; and the alternate anaerobic-aerobic operation mode is adopted to realize wastewater power generation under the anaerobic condition and the rapid degradation of the organic matter under the aerobic condition.

The invention discloses a disposing method of high concentrated tobacco slice wastewater in the paper making processes through anaerobic aerobic granular sludge, which comprises the following steps: pre-processing concrete; pumping waste water into anaerobic complex reactor to get anaerobic degradation with sludge density at 30-40g / L, COD load at 12-18kg COD / m3.d and under 35-37 deg.c; adopting interval aerobic particle sludge method to get aerobic treatment; pumping water 1h with aeration of micropore aerated pipe at 8-16h; setting the density of density at 7-12g / L; making COD load at 1.2-1.5kg / (m3.d) . The invention can reach the first emission standard of nation.

The invention relates to a method for processing phenol-containing waste water by anaerobic-aerobic coupling biofluidized bed, firstly making the waste water enter in a regulating pondage and then enter in a biofluidized bed containing macroporous suspended carriers for aeration and degrading the waste water by the anaerobic-aerobic coupling biotreatment; then draining the degraded waste water out of the biofluidized bed, placing still, draining upper-layer standard-reaching water, discharging a small part of the lower-layer water with deposited mud and returning the large part to the biofluidized bed for continuing taking part in the waste water processing process. And it implements coupling of anaerobic and aerobic biodegradations.

The invention discloses a method for remedying soil polluted by difficultly degradable chlorinated organics, in the method a static composting mode is adopted to remedy the polluted soil. The method mainly comprises the steps of site preparation, pile construction and pipe regulation: first combining a certain amount of soil amendment for ameliorating soil by utilizing site preparation; then constructing a relatively controlled pile environment by utilizing an anti-permeable membrane, a drop irrigation hose and an upper-half perorated pipe; and finally, regulating pile state through recharging, aeration and other mode, thus achieving effect of alternating anaerobic-aerobic piling. The remedying method has the advantages of good controllability, high degradation efficiency, simplicity in construction, low remediation cost, and the like, and can be applicable to remediation on soil polluted by various or composite difficultly degradable chlorinated organics.

The invention provides an anaerobic aerobic flocculation sedimentation sewage treatment process, which comprises the following steps: the sewage first passes through the grille and the water collection well, then enters the swirl type grit chamber through a water pump, and then flows into the anaerobic membrane bed for anaerobic biological treatment. The sewage after anaerobic treatment flows into the biological aerated filter for aerobic biological treatment. After aerobic treatment, it enters the flocculation reaction and settles before being discharged. The present invention takes anaerobic membrane bed and biological aerated filter as the main body, supplemented by flocculation and sedimentation, has fast start-up, stable operation, short hydraulic retention time, high efficiency, simple process flow, and convenient operation and implementation; the equipment is compact in structure and occupies an area Small area, less investment than infrastructure construction, low operating cost, low noise, no peculiar smell, and no impact on the surrounding environment during operation. It can be applied to urban domestic sewage, restaurants, living quarters, military barracks, factories and hospitals. treatment, and has broad application prospects.

The invention provides a comprehensive treatment method for high-concentration aldehyde acrylic wastewater. The method is characterized in that alkaline metal or alkaline-earth metal hydroxide is adopted according to the relative contents of two types of aldehyde in acrylic wastewater, wherein one type of aldehyde contains Alpha-H, and the other does not contain Alpha-H; one or more additives including sodium hydroxide, calcium hydroxide and potassium hydroxide are selected, and the additives are metered in the form of hydroxide and are de-aldehyded under the condition of high temperature. After treatment, the biotoxicity of the acrylic wastewater is greatly reduced, and the acrylic wastewater is further treated through an anaerobic-aerobic combination biological method to ensure that outlet water can comply with the Grade-III emission standard of the national stipulation about comprehensive discharge standard of sewage (GB 8978-1996), so that comprehensive control of high-concentration aldehyde acrylic wastewater can be realized.

The invention discloses anaerobic-aerobic process achieving making paper with waste paper without waste water emission. Filter the fiber in waste water from production line as raw material. The waste water in which fiber is recycled is then sent to a sink pool and water pool 1, the rest sent to an anaerobic reactor softening and removing organic pollution by micorbion. With bio-technique of low cost, the waste water soften and purify are achieved at the same time, resolving

The invention discloses a microbe fuel cell device for enhanced nitrogen removal in the AAO (anoxic-anaerobic-aerobic) sewage treatment technology, for enhancing sewage biological denitrogenation and generating electricity. The device structurally comprises an anode stacking, a cathode stacking, an external circuit conducting wire and an external load, wherein the anode stacking is arranged in an anaerobic reaction tank in AAO sewage treatment technology; the cathode stacking is arranged in an anoxic tank to form a biological cathode microbe fuel cell structure; and the denitrogenation is enhanced without affecting the original function of the AAO sewage treatment technology, and electricity can be generated when pollutants are removed. The device is easy to install and can be combined with the present AAO technology conveniently for use.

The invention discloses a garbage leachate treatment process; a garbage leachate is treated by an adjusting pool, an anaerobic biological treatment unit, a minisize anaerobic-aerobic treatment unit, a membrane bioreactor and an evaporation system (MVC) in turn, and through evaporation, distilled water formed from water and ammonia reaches standards and is discharged after passing through a cation-anion resin exchange system; non-condensable gas reaches standards and is discharged after passing through a deodorization system, and a concentrate is discharged out of the evaporation system; the garbage leachate treatment process is respectively subjected to anaerobic biological treatment, minisize anaerobic-aerobic treatment and membrane bioreactor treatment before evaporation treatment, so as to greatly alleviate the operation burden of the evaporation system (MVC), relieve the fouling problem of the evaporation system (MVC) to a largest extent and reduce the frequency of cleaning; the garbage leachate treatment process is applicable to treatment of conventional high-COD and high-NH3-N garbage leachates, at the same time, is applicable to treatment of leachates with different landfill ages or different types through adjustment of related process parameters, and effectively relieves the burden of process operation.

A process for treating the sewage generated by preparing acrylic fibre by dry method includes such steps as regulating pH value, coagulation-deposition to remove suspended substance and colloid, cooling supernatant, flowing in conditioning pool, active mud-microeletrolyzing stemp while providing oxygen to the active mud, anaerobic acidifying while introducing life sewage for removing EDTA and Na salt, and anaerobic-aerobic step for biologic denitrifying. Its advantages are high effect and easy operation.

The invention relates to a method for embedding life waste via anaerobic-aerobic reactor. Wherein, it comprises that embedding anaerobically the life waste, the generated filter water refluxes to the top of embed layer, and recycles the embed gas; refluxing, to reach certain technique standard, stopping refluxing filter water, to ventilate the embed layer; making said embedded layer in aerobic condition, to remove the water and smell gas of waste layer, lead tail gas into filer water to remove ammonia nitrogen; stopping aerobic step; treating waste water, selecting putrefactive waste to be recycled. The invention can reduce cost and improve the quality of filter water.

The invention discloses a sewage treatment system and method for a natural gas purifying factory in H2S-containing gas field. By adopting a biological treatment process comprising pre-aeration, air floatation, hydrolytic acidification, anaerobic treatment, aerobic treatment, and precipitation, the quality of the treated water meets the primary standard of supreme permissible effluent concentration of the second category of hazardous in national integrated wastewater discharge standard. According to the invention, innovation is created based on anaerobism-aerobism of conventional purifying factory biochemical sewage treatment processes, and a sewage pretreatment step realized by hydrolytic acidification is added, thus water quality and quantity are effectively adjusted, the biodegradability of the sewage is greatly raised, and favorable conditions are created for posttreatment of the sewage; in the stage of subsequent treatment, the anaerobic-aerobic segment is changed into an aerobic-anaerobic segment, the sewage retention time is greatly reduced, the volume of treatment building is correspondingly reduced, thus the engineering investment is saved, and the workload of maintenance management is reduced.

The invention relates to an optimal carbon source supplement real time control system used in a sequencing batch reactor activated sludge process for denitriding nitrogen-containing wastewater with a low C / N ratio. In the conventional sequencing anaerobic-aerobic batch reactor activated sludge process, the automatic control system uses an oxidation-reduction potential (ORP), a pH value and a DO curve slope variation value as control parameters and particularly adopts technology for automatically controlling optimal denitrification external carbon source addition at an anaerobic (aerobic) stage. The aeration time is controlled in the aerobic stage of the reaction and the addition amount of external nutrients is automatically controlled in the anaerobic stage of the reaction to optimize the system. The system can automatically adjust the hydraulic retention time in reaction processes according to the treatment conditions of the system such as inflowing water quality, a nitrification degree and a denitrification degree so as to ensure stable quality (ammonia nitrogen removal rate of over 99 percent) of treated water and optimal energy consumption.

The invention discloses a composite anaerobic-aerobic process for treating waste paper making wastewater. The method comprises that: the waste paper making wastewater enters a physicochemical treatment unit, and fibers are recycled; and the water yielded from the physicochemical treatment unit is distributed through an air pipe water distributor at the bottom of a composite anaerobic pool, pollutants are removed by anaerobic granular sludge formed by an active sludge layer at the lower part of the composite anaerobic pool, then the wastewater enters an anaerobic filter layer at the upper part of the composite anaerobic pool and is subjected to decomposition and metabolism by using microbes attached and grown on the surface of a filter material and inside pores, the top of the composite anaerobic pool yields water to an aerobic pool, the water yielded from the aerobic pool enters a sedimentation pool, the sludge and the water are separated, and the supernatant fluid water can be directly discharged and also can be recycled for paper making. By using the anaerobic granular sludge to adsorb small fibers, the method reduces balling of the filter material of the anaerobic filter pool, improves the integral effect of anaerobic treatment, and achieves the aims of steady operation of sewage treatment facilities and reduction of operating cost of sewage treatment.

The invention provides a brewery wastewater treatment device and a treatment method. The device comprises a reactor; the reactor comprises a cathode chamber and an anode chamber; the two chambers are separated by a proton exchange membrane; the anode is arranged in the anode chamber and the cathode is arranged in the cathode chamber; the lower end and the upper end of the cathode chamber and the anode chamber are respectively provided with a water inlet and a water outlet; the upper part of the anode chamber is sealed by a seal cover; the bottom of the cathode chamber is provided with an aerating device; the anode and the cathode are connected by a lead and are connected with load to form a closed loop. The invention adopts bipolar chambers of microbial fuel cells to form an anaerobic-aerobic combined process to treat the brewery wastewater, can generate electric energy while treating the wastewater and has environmental, social and economic benefits. The invention not only can treat the brewery wastewater, but also is suitable for other organic industrial wastewater with high concentration, even for the treatment of the organic wastewater difficult to degrade, can effectively convert the chemical energy into the electric energy and simultaneously obtains good wastewater treatment effects.

The invention discloses a synchronous flue gas desulfurization and denitrification process combining chemical absorption with anaerobic-aerobic conversion and belongs to the field of industrial flue gas control. A solution absorbing SO2 to generate sulfate and sulfite enters an anaerobic bioreactor, sulfate and sulfite are reduced into sulfide by utilizing sulfate reducing bacteria, and the sulfide-containing solution in the anaerobic bioreactor enters an aerobic bioreactor; a solution absorbing NOx to generate nitrate and nitrite enters the aerobic bioreactor, sulfide is converted into elemental sulfur by utilizing microorganisms, and nitrate and nitrite are converted into N2. An elemental sulfur-containing mixed solution generated by the aerobic bioreactor is treated with a sulfur recovery system to obtain relatively high-content sulfur for recycling, and an alkaline solution obtained by the sulfur recovery system returns to a desulfurization and denitrification absorption tower for circulation. The process is reasonable, low in energy consumption, low in investment operation expense and little in secondary pollution, synchronizes flue gas desulfurization and denitrification, recovers elemental sulfur, and is an ideal flue gas desulfurization and denitrification process.

The invention provides an anaerobic-aerobic alternative type granule sludge treatment sewage device and method and belongs to the sewage treatment technologies. According to the anaerobic-aerobic alternative type granule sludge treatment sewage device, a water inlet pipe and an air inlet pipe are arranged at the bottom part of a tank body; a water distributing pipe is arranged at the inner bottom part of the tank body and is connected with the water inlet pipe; a fine bubble aerator is arranged above the water distributing pipe and is connected with the air inlet pipe; an effluent weir is arranged on the outer side of the upper end of the tank body and is connected with the water inlet pipe through a return pipe; and the effluent weir is connected with an outlet sump through a water outlet pipe; a three-phase separating device is arranged at the top inside the tank body; a flow guide plate is arranged below the three-phase separating device in the tank body; and an air collecting pipe is arranged above the tank body and is connected with an exhaust port of the three-phase separating device. According to the anaerobic-aerobic alternative type granule sludge treatment sewage device, the sewage is alternately treated in anaerobic and aerobic manners under intermittent aeration. The anaerobic-aerobic alternative type granule sludge treatment sewage device has the advantages that the granule sludge is quickly generated, most of organic pollutants in the sewage are removed, and the biodegradability is improved, methane is generated and used as an energy; the resistance to impact load is high; the floor space is saved; the treatment efficiency is improved; and the treatment cost and expense are decreased.