59results about How to "High shock load resistance" patented technology

The present invention relates to one kind of functional biological carbon fiber and its preparation process and application as biomembrane carrier. The biomembrane carrier is prepared with polyacrylonitrile carbon fiber, and through electrochemical surface treatment in 5-20 % concentration ammonium bicarbonate electrolyte to increase the surface acid oxygen containing functional groups and raise wettability, and gluing with water soluble epoxy resin in the amount 0.5-2 %. The biomembrane carrier can fix nitrobacteria, sulfate reducing bacteria and anaerobic methanogen. It may be used in treating high concentration acrylon waste water, and can eliminate sulfate, COD and ammonia nitrogen effectively. In addition, the biomembrane carrier is easy to regenerate and has no secondary pollution.

The invention discloses a method and a device for treating sewage through synergistic action of activated sludge and a biomembrane, which belong to the technical field of environmental protection and energy conservation. The device consists of an inner layer and an outer layer, wherein the inner layer is a complete activated sludge biological treatment area; and the outer layer is an activated sludge and the biomembrane joint biological treatment area. The method comprises the following steps: firstly, a stage of performing anaerobic treatment on the activated sludge, namely controlling the quantity of return sludge and staying for certain time in the stage; secondly, introducing the sewage after the treatment in the anaerobic treatment stage into the outer layer, namely the activated sludge and the biomembrane joint biological treatment area through an inner layer water outlet pipe; and finally, discharging the sewage satisfying the discharge requirement from a water outlet on the outer layer of the device. The treatment device can combine various treatment processes, has flexible running modes, saves the project investment, reduces the floor area, and has short process flow by comparing with other treatment devices or structures; besides, the return quantity of the sludge is reduced by 40 to 80 percent, and the running cost is reduced by 18 to 31 percent.

An organic composite soil high-efficiency ecological water purification system comprises a wall body and a filter bed in the wall body, wherein a surface water distribution pipe is arranged above the wall body, a water outlet is formed below the wall body, the filter bed is sequentially divided into a plant growth area, a primary sand filter layer, a rapid infiltration layer, a water storage layer, a slow infiltration layer and a water outlet layer from top to bottom. The purification process adopts the dry-wet alternative way, and comprises four cycles including a water inlet rapid infiltration period, a water storage slow infiltration period, a slow infiltration deep purification period, and an empty recovery period which cycle. The organic composite soil high-efficiency ecological water purification system has the characteristics of small occupied area, high impact-resisting load, stable water outlet, short construction period, low cost, low capital construction investment, convenient maintenance and management, low operation cost and low secondary pollution (very small sludge production) and good ecological landscape benefits. The water purification system is suitable for large-area popularization in the domestic sewage treatment in rural areas and suburb areas, and is also suitable for organic pollution remediation and pollution control of water bodies such as small rivers and lakes.

The invention discloses a high-concentration difficultly degraded chemical waste water treatment method. The method comprises 1, waste water collection, 2, pH adjustment and preliminary removal of high-concentration ammonia nitrogen in waste water, 3, deposition separation, feeding of the supernatant into a first iron-carbon Fenton reaction pool and mixing of the supernatant and waste water in a first adjustment tank, 4, hydrochloric acid-based pH adjustment, addition of hydrogen peroxide and ferrous sulphate into the first iron-carbon Fenton reaction pool, mixing of product water and domestic sewage and feeding of the mixture into an anaerobic pond, 5, treatment in the anaerobic pond and lifting of the product water to an A / O integrated tank, 6, treatment on the product water in a second iron-carbon Fenton reaction pool, deposition, supernatant pH adjustment, treatment in a sodium hypochlorite reaction tank and feeding of the product water into a BAF biological aeration filter tank, and 7, treatment on the product water from the BAF biological aeration filter tank through UV high-grade equipment, treatment in a sedimentation basin and discharge of the supernatant into a total discharge opening. The method has high impact resistance, a high treatment capability, a complete process and good treatment efficiency.

The invention relates to application of functional biological carbon fiber. The carbon fiber of which the surface contact angle is 50 to 180 degrees and the range of equilibrium moisture content is 1.0 to 5.9 percent is adopted as a biofilm carrier. The biofilm carrier can rapidly fix nitrobacteria, denitrifying bacteria, sulfatereducting bacteria and anaerobic methanogens. Acrylic and other high-concentration production wastewater is treated mainly through two-phase anaerobic / aerobic nitration and other processes, so that sulfate, COD, BOD, ammonia nitrogen and nitrate nitrogen can be effectively reduced and removed. In addition, a regeneration method of the biofilm carrier is simple and easy to apply and free from secondary pollution. The invention is particularly applicable to the biological treatment of acrylic wastewater and other industrial wastewater with high sulfate, high COD, low carbon-sulfur ratio and substances difficult to biodegrade.

The invention relates to a method and a device for joint denitrifying by denitrification and anaerobic ammonia oxidation embedding particles, and belongs to the field of sewage. The method comprises the following steps of respectively embedding a WPU (water-borne polyurethane) material by separated denitrification bacteria and anaerobic ammonia oxidation bacteria, putting the denitrification embedding particles into a flow-separated ball, putting anaerobic ammonia oxidation embedding particles into a Pall ring or into water in a floating state, and setting the denitrification embedding particles and the anaerobic ammonia oxidation embedding particles into an incomplete mixing state. The device comprises a water bath constant-temperature system, a sealing device, the flow-separated ball, the Pall ring and the like. The method and the device have the advantages that after embedding of the denitrification bacteria and anaerobic ammonia oxidation bacteria, the influence to the activity is avoided, the amounts of the denitrification bacteria and the anaerobic ammonia oxidation bacteria in the system are increased, the loss of bacteria amounts is reduced, the problems of slow growth of the anaerobic ammonia oxidation bacteria and stricter growth environment requirement in an anaerobic ammonia oxidation technology are solved, and the denitrifying efficiency of the system is improved by combining a nitrifying mode; the two types of embedding are set into the incomplete mixing state in the device, and respective feeding ratios can be flexibly adjusted according to the water quality.

The invention discloses a novel anaerobic reactor based on UASB and a treatment system. The novel anaerobic reactor comprises a novel anaerobic reactor body, a degassing pool, a precipitation pool andan automatic monitoring system, wherein an anaerobic reactor control system realizes fully automatic control through information such as temperature and flow rate; the anaerobic reactor body and thedegassing precipitation pool consist of a water inlet pipe, water distribution pipes, a tank body, a circulation system, a corrugated board separator, an arch top air seal, a water sealing tank, a siphon water outlet system and a degassing precipitation pool. The bottom water distribution pipes are used for water distribution; the uniform water inlet at the bottom can be effectively ensured; the sludge deposition probability due to nonuniform water distribution is reduced; a low-region circulation system is added, so that the low-region high flow rate is realized; the mass transfer effect is effectively improved; contaminants and particle mud are in sufficient contact; the operation efficiency of the reactor is enhanced; a gas collection mode of a inclined plate and the arch top air seal is used, so that the investment cost is reduced; meanwhile, the marsh gas collection efficiency is improved; through the arrangement of the degassing precipitation pool, lost sludge in the anaerobic reactor can be supplemented, and the stable operation is ensured.

The present invention provides an optimization method for a fertilizer wastewater treatment process. The original process comprises the following steps of: homogenizing and weight-equalizing fertilizer wastewater by an adjusting tank, pumping the wastewater from the adjusting tank to a primary aeration tank by a wastewater pump to remove part of COD (chemical oxygen demand) and toxic and harmful substances in the wastewater; and introducing the primarily settled wastewater into the front denitrification biological denitrogenation section and subsequent physical and chemical advanced treatmentsection of an anoxic tank / aerobic tank, and simultaneously adding high-efficiency microbial flora to a biochemical system. By optimizing the dissolved oxygen concentration of the primary aeration tank and nitrification liquid reflux ratio R and sludge reflux ratio r2 of the front denitrification biological denitrogenation section of the anoxic tank / aerobic tank, the optimization method improves the total nitrogen removal rate of the fertilizer wastewater from 41.1% to 66.7% (increased by 25.6%) and improves the COD and ammonia nitrogen removal rates to 95.8% and 98.8%, respectively.

The invention relates to a treating method for landfill leachate. The method comprises the following steps: introducing landfill leachate into a regulating tank, carrying out uniform mixing and adjusting the quality and quantity of water; then adding a coagulant into the leachate for coagulating sedimentation and filtration so as to remove metal ions, SS and a part of organic matters in the leachate; introducing the treated leachate into an MVC evaporation plant for evaporation so as to remove the majority of COD, BOD and pollutants like ammonia nitrogen, metal ions and TDS in the leachate; and introducing the treated leachate into an electrolytic bath for oxidation so as to remove a small amount of residual ammonia nitrogen and COD in condensed water and discharging effluent reaching the standard. The treating method provided by the invention has the advantages of strong adaptive capability to changes of water quality, high resistance to impact load, a short treatment cycle, high treating efficiency, a small occupied land area, a high degree of automation, low cost, a good removal effect on ammonia nitrogen, COD, heavy metal ions, TDS and chroma, a clearance rate of more than 95% and capacity of allowing effluent quality to meet national discharge standards in China.

The invention relates to a rotary-type wastewater treating device, comprising a container, wherein a rotating shaft is arranged in the container; a toothed rotating disc with the rotating shaft as the axis is arranged at one end of the rotating shaft; two groups of cylinders with the rotating shaft as the center are arranged on the rotating disc; a slit is formed on the cylinder; a driving device is arranged on the container and connected with the rotating disc through a chain; a water outlet pipe and a dredge pipe are arranged on the sidewall of the container on which the driving device is mounted; and a water inlet pipe and a blow-down pipe are arranged on the other corresponding sidewall of the container. The rotary-type wastewater treating device is capable of thoroughly stirring the wastewater, and simultaneously capable of charging oxygen; and a micro-electrolytic material can be filled in the cylinders so that electrochemical and physical treatment processes are realized and caking and blockage can be prevented.

The invention discloses a biological aerated filter system and a sewage treatment method thereof. The biological aerated filter system is connected with a first-stage water treatment system, and is provided with a water inlet with a water intake valve, and a water outlet with a water discharge valve. The biological aerated filter system at least comprises a biological aerated filter group for treating sewage discharged from the first-stage water treatment system, a backwash fan, and an automatic control device, wherein the first biological aerated filter group at least comprises a plurality of down-flow biological aerated filters and up-flow biological aerated filters, which are adjacently connected sequentially in series; the backwash fan provides wind to adjust the aeration rate and the backwash aeration rate of each biological aerated filter in the system; the automatic control device controls the backwash fan to adjust the aeration rate of the biological aerated filter and opening and closing of the water intake valve and the water discharge valve. By adopting the method, the sewage sequentially passes through the plurality of biological aerated filters connected in series; the plurality of biological aerated filters are utilized to carry out interval treatment in an anoxic condition and an aerobic condition, so as to output qualified sewage.

The invention discloses a preparation method of velocity-separation bioballs for sewage treatment. The preparation method comprises specific steps as follows: S1, volcanic rock is crushed; S2, the volcanic rock is ground; S3, batching is performed: 75-85 parts of volcanic rock powder obtained in S2, 20-25 parts of sodium hydrogen carbonate, 28-35 parts of sodium alginate, 8-12 parts of a surfactant, 22-26 parts of activated carbon and 12-14 parts of poly aluminium chloride are added to a mixing bin for sufficient stirring and mixing; S4, a material obtained through sufficient mixing in S3 is added to a stirrer for stirring, 4-6 parts of cement and 32-35 parts of water are added during stirring, and the material is stirred for 15 min for standby application; S5, a mixture obtained in S4 istaken out and added to a ball-shaped die with diameter being 2.5 cm, and the die is put in a greenhouse at the temperature of 25 DEG C for sufficient moulding; S6, demoulding is performed; S7, products obtained in S6 are screened; S8, a plastic casing is prepared; S9, a product obtained in S7 is put in the plastic casing, and a finished product is obtained. According to the preparation method, theservice life is long, and the treatment effect is good.

The invention discloses a novel inorganic-organic material synergistic speed-differential biochemical ball. The ball consists of a hollow spherical shell and a composite filler in the hollow sphericalshell. A preparation method comprises the following steps: heating and melting polyurethane, adding volcanic rock particles and calcium peroxide powder, fully mixing, pouring the mixture into a mold,cooling until the center temperature is not higher than 110 DEG C, putting filamentous polylactic acid fibers into the mold to wrap the filamentous polylactic acid fibers by taking a mixture of the volcanic rock particles, the calcium peroxide powder and the polyurethane as an outer layer, fully shaping, carrying out demolding treatment to obtain a composite filler, with the filamentous polylactic acid fibers being positioned in the center of the composite filler; and putting the composite filler into the hollow spherical shell to obtain the inorganic-organic material synergistic speed-differential biochemical ball. The speed-differential biochemical ball disclosed by the invention has the advantages of large impact load resistance, no need of an activated sludge cultivation stage, capability of automatically forming a film, small amount of generated sludge, simplified treatment process, capability of reducing secondary pollution of the sludge to the minimum extent and good treatmenteffect.

The invention discloses a device and a method for strengthening an impact resisting load of anaerobic treatment wastewater. The device comprises a first cylinder and a second cylinder which are connected through a water distribution device. A water inlet hole and a second exhaust hole are arranged at the top end of the first cylinder. The water inlet hole is connected with a sulfate liquor tank through a dosing metering pump. Two first exhaust holes are arranged at the top end of the second cylinder, and active carbon casting holes are respectively arranged on both sides of the body of the second cylinder. According to the invention, acid production stage and methane production stage by anaerobic degradation are effectively separated by controlling the water inlet flow; the biological effect of dominant bacterial community is strengthened by adding particle active carbon to the first cylinder; powder active carbon is cast to the second cylinder as a redox mediator to improve the reaction speed, and the sulfate medicament is selectively cast, so that a good biological environment is easier to form, the dominant bacterial community in each stage comes into play, muddy water is adequately contacted, and the impact resisting load of anaerobic treatment wastewater is enhanced.

The invention provides a coal mine sewage treating and recycling technology. The coal mine sewage treating and recycling technology includes the steps that sewage enters a high-position settling pond for water quality balancing, then enters a water purifying pond for flocculating settling, enters a middle aeration tank for oxygenation aeration, and finally enters a manganese sand filter for treatment, and outlet water meets the recycled water reusing standard. The coal mine sewage treating and recycling technology has the advantages that the sewage load rate is high, impacting resistant loads are high, and the inlet water is not limited; the sewage and a coagulant are sufficiently mixed and reacted, and the quality of the outlet water is stable; the manganese sand filter is additionally arranged, and therefore metal ions such as iron and manganese in the sewage can be better treated; the outlet water meets the recycled water reusing standard and can be used as fire protection water or directly used as other kinds of production water such as coal mine spraying water.

The invention discloses a device and process for treating hydrofluoric acid purification wastewater. The treatment process comprises a water distribution section, a stage-A flocculating sedimentation section, a stage-B coagulating sedimentation section and a discharge section; the treatment device consists of underground equipment, a treating device and stand equipment; a two-stage coagulating sedimentation process is adopted, and a first-stage coagulation sedimentation tank is used for carrying out alkali pH adjustment, lime pH adjustment, calcium chloride and PAM flocculation reaction and fluorinion precipitation; and a second-stage coagulation sedimentation tank is used for carrying out sulfuric-acid pH value back-adjustment, PAC and PAM coagulation reaction and fluorinion precipitation, the concentration of fluorinions in supernatant is lower than 10mg / l after two-stage coagulating sedimentation, and the supernatant is discharged after reaching standard. According to the device and the process, the impact resisting load is high, the operation is effective and stable, and the operating cost is reduced; the treatment device adopts integrally-combined hydrofluoric acid wastewater treatment equipment and is manufactured through welding a polypropylene (PP) material, so that the corrosion resistance is good; and the device is simple and convenient to mount and can subject to arrangement adjustment according to on-site actual situations, and the PP material is durable and attractive.

The invention discloses a dye wastewater treatment apparatus and a method thereof. Phosphorus / cyanogen (CN)-containing wastewater, gypsum wastewater, anthraquinone substance-containing wastewater and alcohol / acetic acid degradable wastewater are classified from the source, enters different devices in the apparatus according to different water properties and are treated to eliminate the pollution from the source, and the method is improved to increase the resource utilization efficiency, greatly reduce the instability and the toxicity of raw water, reduces the impact of wastewater to a biochemical system and realize strong adaptation to the sudden change of the water quality and the water volume, less residual sludge and the recycling and the long-period stable running of the apparatus. The apparatus and the method have the advantages of small investment, high treatment efficiency, stable outlet water quality, and convenience in operation.

The invention discloses a decarburization, denitrification and dephosphorization deep treatment system. The decarburization, denitrification and dephosphorization deep treatment system comprises an anaerobic biological filter, a denitrification biological filter, a carburization biological filter and a nitrification biological filter which are connected in sequence, wherein the anaerobic biological filter is provided with a water inlet pipe; the nitrification biological filter is provided with a water outlet pipe. The carburization biological filter is connected to the anaerobic biological filter through a first mixed solution reflowing pipe in a returning manner; the nitrification biological filter is connected to the anaerobic biological filter through a second mixed solution reflowing pipe in the returning manner; the nitrification biological filter is connected to the denitrification biological filter through a nitrification mixed solution reflowing pipe in the returning manner; the water inlet pipe of the anaerobic biological filter is connected to the denitrification biological filter through overstepping the water inlet pipe; the denitrification biological filter is provided with a primary sedimentation output water leading-in pipe connected with output water of a primary sedimentation tank. The system and the method disclosed by the invention are multi-combination, synchronous and interactive type decarburization, denitrification and dephosphorization deep treatment system and method, which have the advantages of high anti-impact load, high partitioning function, high treatment capability, short process flow, small occupied area and good treatment effect.

The invention relates to the technical field of sewage treatment, and discloses a treatment method and device for food processing wastewater. According to the technical scheme, the wastewater, with different salt concentration, produced in the food processing process is drained in a shunting mode, subjected to oil separating in advance, and then converged in an adjusting pool through a pipeline tobe uniformly mixed, thus salt salinity of the wastewater is neutralized, the salt concentration of the wastewater is within the set range, and it is ensured that the salt content of the wastewater can meet normal operation of subsequent biochemical devices. The treatment method adopts chemical air flotation treatment to preprocess the wastewater, and then adopts a hydrolytic acidification and aerobic method technology as the main technology for wastewater treatment, thus biochemical treatment of the food processing wastewater is achieved, organic matter in the food processing wastewater is removed, the treatment method has the advantages that management is simple, impact loading resistance is high, operation is stable, automatic control is easy to realize, and investment is also saved, and the treatment method is suitable for being used in medium and small-sized organic wastewater treatment stations.

The invention relates to a technological wetland bank filtration system for treatment of black and odorous rivers. The technological wetland bank filtration system is arranged in a black and odorous river and close to a revetment, and comprises a wetland unit, a water distributing unit and a draining unit, wherein the wetland unit comprises a bank filtration wall located in the river and close to the revetment, and constructed wetland located between the bank filtration wall and the revetment; the draining unit is located below the constructed wetland and comprises a water collecting layer formed by supporting of the constructed wetland via a supporting device and draining holes located in the bottom of the bank filtration wall and communicated with the water collecting layer; and the draining holes allow water in the water collecting layer to be discharged into the river. The technological wetland bank filtration system provided by the invention does not occupy the resources of the revetment and is increased in resistance to impact load; the system is mainly applied to treatment of black and odorous rivers and can be used for treatment of combined-system overflow sewage and rainwater; the system is flexible in structure and can be designed according to the water quality and water volume of local rivers and rainfall data; and the process of aeration allows the interior of a filter bed to be in a good aerobic state, and no stink is produced in the process of treatment.

The invention provides an MBR double-membrane process sewage treatment integration apparatus. The apparatus comprises a facultative zone, an anaerobic zone, an aerobic zone, an MBR membrane zone, a clear water tank, a nanofiltration membrane zone and a device room, and the device room comprises a blower, a first medicament storage chamber, a second medicament storage chamber and an electric control cabinet. Solid-liquid separation is effectively carried out through an MBR membrane to make the separation effect better than the separation effect of a traditional sedimentation tank, and the turbidity and the suspended matter content of effluent water are close to zero, and the biological deamination effect in the invention is better than a conventional biological deamination effect; the apparatus also includes the nanofiltration membrane zone, so soluble ion salts, parts of organic matters and the chroma in the sewage can be effectively filtered out, thereby the water quality is further improved; and the apparatus also has the advantages of easiness in integration, standard unification, quantified production, high degree of automation, no manual backwashing, less manual operation, reduction of the operating cost, short construction period, low construction cost, and easiness in installation of standard modular devices.

The invention discloses a coal mine sewage treatment and recovery technology. The technology comprises the following steps: 1, sewage enters a settling tank, and settles for 1-2 h, and 70-90 g of a flocculating agent is added to per cubic meter of wastewater in the settling process; 2, surface clear water is extracted into a biodegradation tank, and undergoes aeration treatment for 40-50 min; 3, obtained water is sequentially filtered through activated carbon and quartz sands, wherein the flow rate is controlled in the filtration process; 4, the filtered water settles secondarily for 50-60 min; 5, the obtained water is secondarily filtered, and the water flow is stirred in the filtering process; 6, the obtained water is sterilized at a high temperature of 120-150 DEG C for 20-30 min; and 7, the sterilized water is cooled, and then is discharged. The technology makes effluent water reach the reuse standards of reclaimed water.

The invention discloses a water supplying treatment device. A pretreatment module is connected with a sand filter tank, the sand filter tank is connected with an advanced treatment module, and the advanced treatment module is connected with a clear-water pool; the pretreatment module, the sand filter tank and the advanced treatment module are connected with a sludge treatment module, and the sludge treatment module is connected to an inlet of the pretreatment module through a pipeline or a channel; and the pretreatment module, the sand filter tank, the advanced treatment module and the sludgetreatment module are arranged adjacent to each other, the pretreatment module, the sand filter tank and the advanced treatment module are located above the sludge treatment module, and the pretreatment module, the sand filter tank and the advanced treatment module are connected to the sludge treatment module through a channel. The invention also discloses a water supplying treatment method. The treatment device provided by the invention can ensure that the quality of discharged water achieves a qualitative leap, production wastewater is effectively treated, environmental burden is reduced, thefloor space is saved, and the economic benefits are obvious.

The invention discloses an industrial park comprehensive sewage treatment method, and belongs to the technical field of sewage treatment environmental protection. The treatment method is a combined process of a plurality of units, and mainly comprises a pretreatment unit, a front advanced oxidation unit, a primary biochemical treatment unit, a rear advanced oxidation unit and a secondary biochemical treatment unit. The process combination is reasonable, the impact load resistance is high, the treatment capacity is high, the effluent quality is stable and reaches the standard, and the method is suitable for treatment of comprehensive sewage of industrial wastewater and domestic sewage generated in various industrial parks.

The invention discloses a method and a system for deeply treating leachate, the method comprises the following steps: introducing the leachate to be treated into an electrolytic tank (100) to carry out electrochemical treatment; carrying out solid-liquid separation on a flocculation turbid liquid subjected to the electrochemical treatment, amd discharging a flocculated precipitate / suspended substance; and introducing discharged water after the solid-liquid separation into a wetland purification device (200), degrading or removing leachate pollutants through a paved packing layer, and finally discharging water; and preferably, the method further comprises the step of removing volatile organic compounds and a malodorous gas of the leachate. According to the method and the system disclosing by the invention, by electric oxidation, electric flocculation and wetland deep treatment, the leachate pollutants can be effectively reduced or removed, atmospheric pollution induced by the leachate can even be eliminated through an eodorization system, effective management and disposal of the leachate are realized, and the method and the system ensure that the leachate does not influence human health in human activities.

The invention discloses a novel combined MBBR-MBR. The novel combined MBBR-MBR includes an inlet water tank, a reactor, an outlet water tank and an automatic control system which are connected in sequence, the reactor includes a reactor MBBR part and a reactor MBR part, an overflow baffle plate is arranged between the reactor MBR part and the reactor MBR part, and the upper opening of the overflowbaffle plate is has a zigzag shape; and a plurality of sponge carriers are provided in the reactor MBR part, and a hollow fiber membrane module is arranged in the reactor MBR part. The novel combinedMBBR-MBR improves the sewage treatment efficiency and the quality stability of effluent water, overcomes the disadvantage of membrane pollution caused by long-term running of the membrane module in the MBR, and also improves the problem of uneven aeration.

The invention relates to a method for treating landfill leachate. The method adopts the technical proposal that: adding urea and monopotassium phosphate into the leachate to make the ratio of C to N to P be 280-320 to 3-7 to 1, with the pH value between 6 and 8 at a temperature of between 30 and 40 DEG C; feeding the treated leachate into an upflow anaerobic sludge compound bed reactor, with a hydraulic load between 8 and 12 kg CODCr / m<3>.d, the hydraulic detention time for 8 to 12 hours, an alkalinity in the reactor between 1,000 and 3,000 mg / L and a volatile fatty acid VFA between 100 and 800 mg / L; feeding the treated leachate into a compound bio-membrane reactor by adopting limited aeration as an aeration mode, precipitating for 0.5 to 1.5 hours at an aeration speed of between 150 and 170 L / h for 5 to 7 hours, with a sludge concentration in the reactor maintained to between 4 and 5 g / L at a water temperature of between 10 and 30 DEG C. The method has the advantages of good pollutant removal effect and low cost; moreover, a discharge water index by the method can reach the leachate discharge standard of grade II.

The invention discloses a coupling reactor for preventing and controlling membrane pollution in sewage treatment, and particularly relates to the technical field of sewage treatment equipment. According to the specific technical scheme, the coupling reactor comprises a reactor body and a fiber membrane arranged in the reactor, a water inlet mechanism, an aeration mechanism and a water outlet mechanism are arranged on the reactor body, the water inlet mechanism comprises a water storage tank and a peristaltic pump connected with the water storage tank, and a connecting water pipe is connected between the peristaltic pump and the lower side of the reactor body; the aeration mechanism comprises a gas compression pump and an aeration disc; a liquid level sensor is also arranged in the reactor body and is electrically connected with the peristaltic pump in the water inlet mechanism; an anode and a cathode which are located outside the fiber membrane are further arranged in the reactor, a resistance box located outside the reactor is connected between the anode and the cathode, copper wires are connected between the resistance box and the cathode and between the resistance box and the cathode, and a sealing cavity is formed outside the cathode.With the adoption of the technical scheme, the problem of membrane pollution of the existing anaerobic membrane bioreactor is solved, and the coupling reactor can be used for sewage treatment.

The invention relates to a micro-power sewage treatment system. The system is structurally characterized in that a filter tank, an oil separation tank and a hydraulic grit chamber are sequentially communicated through a pipeline, the filter tank is communicated with a domestic sewage inlet pipe, a basket-type grid is arranged in the filter tank, the hydraulic grit chamber is communicated with a water distribution trough through a pipeline, the water distribution trough is communicated with a quick-separation biochemical tank, biological balls are filled in the quick-separation biochemical tank, the quick-separation biochemical tank is connected with an aeration fan through the pipeline, the quick-separation biochemical tank is communicated with a water collecting tank, the water collectingtank is communicated with a disinfection discharge tank through the pipeline, and the disinfection discharge tank is communicated with a disinfection device through the pipeline. The method has the advantages that a traditional biochemical treatment method is highlighted, so that a single biological treatment environment is converted into a variable biological treatment environment; the processing flow is simple, the integration is realized, the management is convenient, and the unmanned management is basically realized; an active sludge culture and domestication stage is not needed, a biofilm is quickly formed, the growth rate of microorganisms is fast, and the starting time is short; the impact load is large, the purification degree is high, and the operation is stable, the occupied area is small, the investment is low, the operation cost is low and the automation degree is high.