394 results about "Membrane bioreactor" patented technology

The invention discloses a system and a method for classified sewage treatment, and belongs to the technical field of environmental engineering and water treatment. The system comprises the following components: an intelligent water quality detection module, which is used for real-time and accurate monitoring of COD, BOD, ammonia nitrogen, total phosphorus, suspended matter concentration and heavy metal content; the sectional bioreactor realizes deep removal of nitrogen and phosphorus and efficient biological treatment by flexibly adjusting reaction conditions of each section; the intelligent flocculation control module is used for automatically and accurately adjusting the adding amount of a flocculating agent, and is combined with integrated operation of efficient inclined tube precipitation and sludge concentration, so that the water quality of discharged water is stable, and the medicament consumption is reduced; the ultrafiltration membrane bioreactor effectively removes residual suspended matters and colloids, and ensures that the effluent stably reaches the standard for a long time through the synergistic effect of catalytic ozonation; and the sludge treatment module is used for realizing collaborative optimization management of sludge reduction, recycling and energy recycling.

The invention discloses a printing and dyeing wastewater advanced treatment and salt control recycling process and system, and belongs to the technical field of wastewater treatment. According to the process, the printing and dyeing wastewater is sequentially subjected to pretreatment of grating interception, adjustment and homogenization, and coagulating sedimentation; carrying out hydrolytic acidification and biochemical treatment in a membrane bioreactor; softening treatment of ozone oxidation complex breaking and fluidization crystallization softening; carrying out nanofiltration separation to obtain a permeate and a concentrated solution; carrying out seed crystal fluidization descaling on the concentrated solution; respectively carrying out membrane concentration on the nanofiltration permeate and the descaled concentrated solution through reverse osmosis to obtain sodium chloride and sodium sulfate concentrated solutions; and finally, carrying out evaporation curing treatment on the sludge and the crystallized waste residues. Through multi-step cooperative treatment, deep purification of the printing and dyeing wastewater and efficient separation and recycling of salt are realized, and the problems of impure nanofiltration salt separation and high system scaling risk in the prior art are solved.

The invention discloses a double-layer aeration system for preventing wire breakage and sludge deposition of an MBR double-layer component membrane pool, which comprises a raw water pool, a raw water inlet peristaltic pump, an MBR double-layer component membrane pool, a perforated aeration pipe, a pulse aeration box, an aeration pump, a gas meter, a water outlet gear pump, an ultrafiltration membrane component, a pressure sensor, a transmembrane pressure difference display, a sludge discharge peristaltic pump and a water outlet pool, the MBR double-layer assembly membrane pool comprises a first MBR membrane assembly and a second MBR membrane assembly, the first MBR membrane assembly and the second MBR membrane assembly are arranged in parallel, and the perforated aeration pipe and the pulse aeration box are configured to be used as aeration assemblies of the first MBR membrane assembly and the second MBR membrane assembly. According to the invention, the membrane is physically scrubbed by utilizing different aeration modes and a double-layer aeration mode, so that the phenomena of membrane pollution, sludge accumulation and wire breakage are effectively relieved, a reliable theoretical basis is provided for transforming an MBR membrane tank into a double-layer aeration mode in a water purification plant using the MBR hollow fiber membrane, and meanwhile, the method has important significance on reducing pollution and carbon.

The utility model discloses an MBR (Membrane Biological Reactor), and particularly relates to the technical field of sewage treatment, the MBR comprises an outer shell and a plurality of membrane components arranged in the outer shell, the outer top surface of the outer shell is connected with a plurality of movable rods in a sliding manner, the movable rods and the membrane components are arranged in a staggered manner, one part of each movable rod is positioned in the outer shell, and the other part of each movable rod is positioned in the outer shell. And the other part of the movable rod is positioned outside the outer shell. According to the MBR disclosed by the utility model, in actual work, a first motor drives an eccentric wheel to rotate, so that a connecting plate and a plurality of movable rods are pushed to descend, namely a first spring is extruded, when the movable rods descend, a fixed plate can be pushed to descend, and along with continuous rotation of the eccentric wheel, the fixed plate reciprocates up and down; the brush plate can wipe impurities attached to the membrane module, and the cleaned impurities fall to the top surface of the baffle plate, so that the impurities attached to the membrane module can be conveniently cleaned, and the situation that the filtering efficiency is reduced due to the attached impurities is avoided.

The invention discloses a membrane bioreactor membrane pollution prediction method and system, and relates to the technical field of pollution detection. The method comprises the following steps: setting a frequency detection strategy, and connecting a membrane bioreactor to obtain a membrane feedback signal based on the frequency detection strategy; performing feedback signal fluctuation time sequence characteristic analysis based on the membrane feedback signal to obtain a feedback signal characteristic; the feedback signal features are combined with reactor operation parameters to be imported into a mechanism hybrid prediction model, mechanism constraint is carried out through a mechanism constraint layer according to the feedback signal features, data analysis is carried out on time series data features on the basis of the mechanism constraint through a data driving prediction layer, and a membrane state prediction result is obtained; and performing membrane pollution state analysis and progress prediction according to the membrane state prediction result, and generating a membrane pollution prediction data chain. The technical problems that in the prior art, membrane pollution prediction depends on an empirical threshold, so that recognition lags and precision is insufficient are solved, and the technical effect of improving membrane pollution prediction accuracy and real-time performance is achieved.

The utility model discloses an MABR (Membrane Aerated Baffled Reactor) membrane aeration reaction system capable of adaptively adjusting the thickness of a biological membrane layer, which comprises an MABR membrane bioreactor, a membrane pool and a guide rail, and the MABR membrane bioreactor is movably limited on the guide rail; the MABR membrane bioreactor comprises a membrane frame and a membrane assembly, the upper end of the membrane frame is provided with an MABR membrane gas inlet, an MABR membrane tail gas outlet, an aeration gas inlet and a fixing pin, the fixing pin is connected with a valve of an aeration gas inlet valve through a control connecting rod, the membrane frame is further provided with limiting claws and a pulse aeration box, the limiting claws are located on the two sides of the membrane frame, and the pulse aeration box is connected with the limiting claws. The guide rail is used for limiting the MABR on the guide rail and can freely float up and down on the guide rail; the pulse aeration box is positioned below the MABR membrane component and is used for pulse aeration. According to the utility model, the pulse aeration and the MABR technology are combined, the MABR can automatically sink and float up and down under the action of self gravity and buoyancy of the MABR, the thickness of the MABR biological membrane layer is further adaptively controlled, and the device is energy-saving, efficient and free of manual operation.

The invention relates to a biological membrane sewage treatment method and device based on aeration on-off time intelligent regulation and control. The method comprises the following steps: sewage pretreatment: adding a flocculating agent into sewage of a flocculation device, stirring by stages, standing and precipitating, settling and separating floc, and enabling supernatant obtained by separation to enter a membrane bioreactor through a first water outlet device; aeration treatment: adopting an intermittent aeration mode to carry out cycle aeration on the supernatant conveyed by the first water outlet device; membrane separation treatment: pumping the sewage subjected to aeration treatment into a second water outlet device from the membrane bioreactor under the negative pressure pumping action of a centrifugal pump so as to realize the separation of the sewage and pollutants, and regulating and controlling the aeration on-off time according to the composition characteristics of microbial communities in the process of performing aeration treatment in an intermittent aeration mode so as to realize the aeration treatment. The invention relates to a method for optimizing the relative abundance of part of phylum and reducing the accumulation of extracellular polymeric substances and soluble microbial products. The device comprises a flocculation device, a membrane bioreactor and a control unit.

The invention belongs to the field of membrane pollution control, and particularly relates to pseudomonas as well as a separation method and application thereof. The invention provides a pseudomonas, which is identified as Pseudomonas knackmussii HITSZ-Q1, is preserved in the Guangdong Microbiological Culture Collection Center, and has the preservation number of GDMCC (China General Microbiological Culture Collection Center) NO: 66162. The strain takes C6-HSL as the unique carbon source and nitrogen source, and the 16S rDNA sequence of the strain is as shown in SEQ ID NO. 1. The strain has a remarkable degradation capability on signal molecules such as C6-HSL, C8-HSL, 3-oxo-C12-HSL and the like, and the highest quenching rate can reach 98.9%. The strain and pseudomonas aeruginosa are co-cultured, so that the signal molecule concentration of the pseudomonas aeruginosa can be effectively reduced, and biofilm formation is inhibited. The strain is further prepared into a carrier in the form of immobilized pellets, the carrier is added into a membrane bioreactor, the operation cycle is prolonged from 6.5 days to 10.5 days, and the membrane pollution delay rate reaches up to 61.5%.

The invention discloses a membrane pollution state evaluation method, device and equipment of a membrane bioreactor and a medium, and relates to the technical field of membrane method water treatment.The membrane pollution state evaluation method comprises the steps that membrane pollution monitoring index data of the membrane bioreactor are periodically collected, and a periodic time sequence data set used for analyzing and evaluating membrane pollution changes is generated according to the membrane pollution monitoring index data; analyzing the membrane pollution monitoring index data in the periodic time sequence data set according to a preset pollution evaluation rule to determine an index evaluation value corresponding to a membrane pollution monitoring index in the membrane pollution monitoring index data; and determining the pollution state of the membrane bioreactor according to the index evaluation value. Therefore, by analyzing the membrane pollution monitoring data, the membrane pollution potential and state change are mastered, the membrane system operation condition adaptability is evaluated, the reversible membrane pollution degree change and the irreversible membrane pollution degree change are distinguished, special data processing and analysis software does not need to be developed, and the low cost and the reliability, stability and accuracy of the monitoring data are ensured.

The utility model discloses an MBR (Membrane Bioreactor) membrane in-situ cleaning device and a membrane frame. The MBR membrane in-situ cleaning device comprises a main frame, a cleaning assembly and a mobile platform, the main frame is of a three-dimensional structure, a positioning polish rod and a lead screw are arranged on the main frame, the lead screw is connected with a servo motor, the positioning polish rod and the lead screw penetrate through the movable platform and are detachably fixed to the main frame, and the movable platform can freely move on the polish rod and the lead screw; the cleaning assembly comprises a cleaning head and a connecting rod, the cleaning head is of a hollow structure and is provided with a water spraying opening, the connecting rod is of a hollow structure, the cleaning head is communicated with the connecting rod, the movable platform is provided with a through hole, and the connecting rod can penetrate through the through hole and is connected with the water distribution pipe; one end of the water pump is connected with the water suction pipe, and the other end of the water pump is connected with the water distribution pipe. In-situ online cleaning can be carried out under the state that the system is not shut down and does not need to be disassembled, the cleaning efficiency is greatly improved, the labor intensity is reduced, meanwhile, the water consumption is reduced, and the energy consumption is reduced.

The invention provides an elastic microcarrier as well as a preparation method and application thereof, and belongs to the field of water, wastewater and sewage treatment, the elastic microcarrier comprises the following components in parts by mass: 50-75 parts of thermoplastic elastomer, 25-10 parts of diatomite, 10-5 parts of tourmaline and 15-10 parts of iron-carbon powder. The material has good elasticity, adsorbability, biocompatibility and electrochemical characteristics, and can form a microscopic primary battery effect. The elastic microcarrier is applied to sewage treatment with a membrane bioreactor, pollutants can be removed through physical adsorption, chemical action and biological enhancement, meanwhile, the surface of a membrane is kept clean in combination with flexible scraping, membrane pollution is remarkably slowed down, the running membrane flux is improved, and the service life of the membrane is prolonged. The mechanical damage of the traditional rigid filler to the membrane is avoided, and the service life of the membrane is prolonged. The preparation method of the elastic microcarrier is simple and easy to operate, the elastic microcarriers with uniform specifications can be prepared in batches, and the applicability is high.

The invention provides a BDO (1, 4-butanediol) wastewater treatment process with high sulfate content, which comprises the following steps: carrying out electrochemical oxidation treatment on BDO (1, 4-butanediol) wastewater with high sulfate content; introducing the obtained BDO wastewater into an anaerobic reaction device for anaerobic reaction to reduce sulfate ions into hydrogen sulfide and oxidize organic matters to reduce COD (Chemical Oxygen Demand); effluent sequentially flows back to the circulating desulfurization device and the air floatation device; carrying out aeration treatment in the circulating desulfurization device so as to oxidize hydrogen sulfide into elemental sulfur; elemental sulfur is recycled in the air flotation device, and part of effluent of the air flotation device and part of effluent of the anaerobic reaction device flow back to inlet water of the anaerobic reaction device; part of effluent of the air floatation device and part of effluent of the anaerobic reaction device are combined and then are sequentially introduced into an aerobic activated sludge tank with a membrane bioreactor and an ozone catalytic oxidation tank. Effluent can enter a subsequent ultrafiltration reverse osmosis membrane system to be purified, and water produced by the membrane system is recycled as reclaimed water.

The embodiment of the utility model provides a wastewater treatment device, and relates to the technical field of wastewater treatment. The device comprises a reactor, a filter and a liquid outlet pipe, a reaction cavity is formed in the reactor, a water inlet and an exhaust port are formed in the reaction cavity, and the reaction cavity is used for containing activated sludge reacting with wastewater; a filter cavity is formed in the filter, and a membrane assembly is arranged in the filter cavity and used for filtering reaction liquid obtained after the wastewater reacts with the activated sludge; the reaction cavity is provided with a liquid outlet, the filtering cavity is provided with a liquid inlet, and the liquid outlet pipe is connected between the liquid outlet and the liquid inlet. According to the wastewater treatment device provided by the embodiment of the invention, the reactor and the filter are independently arranged and are isolated from the reaction cavity of the reactor, so that most sludge and microorganisms are left in the reactor, the contact between the sludge and the filter membrane and the contact between the microorganisms and the filter membrane are effectively reduced, and the treatment efficiency of the membrane bioreactor is further ensured.

The invention relates to the field of composite ultrafiltration membranes, in particular to a GO / PVDF composite ultrafiltration membrane for MBR and a preparation method of the GO / PVDF composite ultrafiltration membrane. The GO / PVDF composite ultrafiltration membrane is prepared by adopting 18% of polyvinylidene fluoride as a membrane base material, 6% of polyvinylpyrrolidone as a pore-foaming agent, 0-2% of graphene oxide as a modifier and the balance of N, N-dimethylacetamide as a solvent through an impregnation phase inversion method. The GO with low mass fraction is added into the section of the membrane to form a large and thick finger-shaped pore structure, the filtration resistance of membrane pores is reduced, the filtration flux, hydrophilicity, permeability and interception performance of the membrane are improved, the method is simple to operate, the prepared finished product is excellent in performance, and the research and application expansion of a membrane modification technology are promoted.

The invention discloses integrated sewage treatment equipment, which relates to the technical field of sewage treatment and comprises an adjusting tank, a biodegradation tank, a membrane bioreactor, an aeration device and a backwashing unit. Wherein the regulating tank is used for preliminarily stirring sewage, the biodegradation tank is internally provided with an anaerobic zone, an anoxic zone and an aerobic zone, the membrane bioreactor is mounted in the aerobic zone, the aeration device provides oxygen for each zone and forms bubble disturbance on the membrane surface, and the backwashing unit is used for periodically cleaning a membrane component. According to the invention, integrated treatment of sewage is realized, the nitrogen and phosphorus removal efficiency is improved, and the risk of membrane pollution is reduced at the same time.

The utility model discloses an aeration device of an MBR (Membrane Biological Reactor), which relates to the technical field of water treatment and comprises an aeration pipeline, one end of the aeration pipeline is fixedly connected with an air inlet pipe, the top of the aeration pipeline is fixedly connected with an air delivery pipe, and the top of the air delivery pipe is fixedly sleeved with a support plate. The center of the top of the supporting plate is movably sleeved with a connecting pipe. Through mutual cooperation of the supporting bottom plate, the supporting rod, the damping spring column, the pressing column, the connecting frame, the extrusion column, the mounting disc, the fixing frame and the conical baffle, the problems that the aeration head of the aeration device stops aeration into water, so that suspended impurities in the water fall under the influence of gravity, and the falling suspended impurities easily block micropores in the aeration head, so that the aeration efficiency is improved, and the service life of the aeration head is prolonged are solved. The problem that follow-up use of the aeration device is affected is solved, the function of blocking protection is achieved, falling suspended impurities are effectively blocked and protected, micropores in the aeration head are prevented from being blocked, and the protection performance of the device is improved.

The invention discloses a magnetic biochar coupled dynamic membrane synergistic pollution reduction and flora regulation method, which comprises the following steps: adding magnetic biochar into an anaerobic dynamic membrane bioreactor for anaerobic digestion reaction, and adding 1.2-1.5 g of magnetic biochar into each liter of sludge mixed liquid in the anaerobic dynamic membrane bioreactor. The magnetic biochar is composed of a honeycomb-shaped carbon material obtained by pyrolyzing carbon through sodium citrate and Fe3O4 loaded on the surface of the honeycomb-shaped carbon material through a chemical coprecipitation method. According to the method, functional microorganisms such as methane filamentous bacteria and methane rod bacteria can be selectively enriched, the methane yield is increased by 30%-35%, membrane pollution is effectively relieved by improving the sludge floc structure, the service life of the membrane is prolonged, and technical support is provided for low-cost and low-energy-consumption operation of the anaerobic membrane bioreactor.

The invention relates to the technical field of sewage treatment, and discloses a membrane bioreactor and system based on piezoelectric vibration. The membrane component in the MBR comprises a composite membrane material and a membrane frame, the composite membrane material comprises a piezoelectric material and an MBR membrane material, the MBR membrane material is used for realizing solid-liquid separation; the piezoelectric material is used for driving the MBR membrane material to vibrate; and the membrane frame is used for fixing the two ends of the membrane filaments in the composite membrane material and providing membrane filament water producing and backwashing water channels and cable channels, so that the whole membrane component with certain mechanical strength is formed. The MBR membrane material is driven to vibrate through piezoelectric vibration, so that membrane pollution is inhibited, and the water production efficiency and the cleaning efficiency of the membrane are improved.

The invention relates to the technical field of environmental engineering, and discloses a wool washing wastewater recovery treatment process which comprises the following steps: S1, carrying out demulsification pretreatment on wastewater through bionic nano-enzyme and recovering wool fat, S2, carrying out supercritical water gasification reaction on the pretreated wastewater, synchronously decomposing organic matters and generating hydrogen, the method comprises the following steps: S1, gasifying effluent, S2, carrying out gasification on the effluent, S3, carrying out filtration and biodegradation on the gasified effluent by adopting a self-energy-supply dynamic membrane bioreactor, S4, carrying out deep purification on membrane effluent through a photocatalysis-microalgae coupling system, and S5, coordinating operation of the whole system through an intelligent control algorithm based on real-time monitoring data. According to the method disclosed by the invention, the technical effects of efficiently recovering the wool fat and improving the oil-water separation selectivity are achieved by adopting a technical scheme of synergistically enriching and demulsifying the magnetic response bionic nano-enzyme and the high-gradient magnetic field; the problems of high reaction residue, serious secondary pollution and easy enzyme inactivation are solved.

The invention relates to the technical field of hollow fiber membranes, and discloses a preparation method of a dynamic MBR (membrane bioreactor) hollow fiber membrane component, which comprises the following steps: hollowly connecting an impeller framework with a rim pipe by using a connector to obtain an impeller type membrane component; a plurality of hollow fibers are cast into hollow fiber bundles, one ends of the hollow fiber bundles are cast on the reserved opening of the porous pipe sleeve of the impeller framework, the other ends of the hollow fiber bundles are bundled and cast on the hollow rim, and a blade type hollow fiber membrane assembly is prepared; connecting a hollow rim of the blade type hollow fiber membrane module with a rim pipe of the impeller type membrane module to obtain a dynamic MBR hollow fiber membrane assembly; arranging a plurality of dynamic MBR hollow fiber membrane assemblies on a water guide pipe, and connecting in series to form a wheel row; and arranging a plurality of wheel rows in a staggered manner to complete the preparation of the dynamic MBR hollow fiber membrane module. The invention can solve the problems of low packing density of the existing rotary membrane component and easy blockage and pollution of the root of the existing curtain type membrane component, and greatly prolongs the service life of the membrane.

The utility model discloses a combined aeration structure of a membrane bioreactor. The combined aeration structure comprises a plurality of first aeration pipes and a plurality of second aeration pipes, the first aeration pipe and the second aeration pipe are paved on the bottom surface of a container of the membrane bioreactor in parallel at an interval, and are paved on planes with different heights; each of the first aeration pipe and the second aeration pipe comprises an inner pipe and an outer pipe which are concentrically arranged, and the inner pipe is a solid pipe and sleeves a rotating shaft structure driven by a motor; the outer pipe is an aeration pipe, and aeration holes are uniformly formed in the surface of the outer pipe; the first aeration pipe and the second aeration pipe are connected with different aeration main pipes between the inner pipe and the outer pipe, and are connected with an aeration control device through the aeration main pipes to supply air. According to the utility model, combined aeration and accurate regulation and control of aeration can be carried out through the first aeration pipe and the second aeration pipe, so that an efficient and uniform aeration effect is realized in the membrane bioreactor.

The invention discloses a sewage advanced treatment device of an electric flocculation-AOA type MBBR coupled gravity-driven membrane bioreactor for rural domestic sewage treatment and a water treatment method, through the coupling effect of an electric flocculation basin and an AOA type MBBR coupled gravity-driven ceramic membrane bioreactor, gravity driving is adopted, and the sewage advanced treatment device is used for treating rural domestic sewage. The device has the advantages of flexible operation, low water loss, impact load resistance and the like, and regular backwashing or replacement of filter materials and aerators is not needed. Compared with a traditional MBR membrane, the MBBR process has the advantages that the mechanical strength is remarkably improved, the service life is remarkably prolonged, the membrane pollution problem is solved, the membrane flux is increased, the operation and maintenance cost is reduced, the nitrogen and phosphorus removal capacity is improved, a carbon source in raw water can be fully utilized, deep decarburization can be performed without additionally adding the carbon source, and the energy consumption is reduced. Meanwhile, the method also has the advantages of low energy consumption and the like, so that by adopting the AOA process, the carbon source requirement is reduced, the carbon emission is reduced, and low-carbon operation is realized.

The invention relates to the technical field of biological sewage treatment, and particularly discloses a process for combined treatment of antibiotic wastewater by a compound microorganism-MBR (Membrane Bioreactor) membrane. The invention provides a process for combined treatment of antibiotic wastewater by a compound microorganism-MBR (Membrane Biological Reactor) membrane, which comprises the following steps of: performing directional domestication and toxicity screening on activated sludge through COD (Chemical Oxygen Demand) gradient increase and decrease and removal rate control, and constructing a microbial community resistant to sulfamethoxazole impact; further, a compound bacteria solution composed of marine Arfiv bacteria and Rhodopseudomonas faecalis is introduced, so that synergistic degradation of high COD and sulfamethoxazole is realized under a proper pH condition, and the COD removal rate is still kept at a relatively high level when the concentration is increased; and the tail end is matched with MBR membrane separation, and efficient biodegradation and efficient solid-liquid separation are coupled, so that the sulfamethoxazole and COD in the wastewater are efficiently removed under the conditions of low drug consumption and near neutrality.

The invention belongs to the technical field of sewage treatment, particularly relates to a flushing structure, MBR (Membrane Bioreactor) membrane sewage treatment equipment and a control system, and provides the following scheme aiming at the problems that a sewage blocking layer is formed on the membrane surface in the existing sewage treatment process, so that the membrane flux is reduced, and the membrane flushing effect is poor during back flushing. A clear water pipe is fixed to one end of the confluence plate, the clear water pipe communicates with an external water suction pump and is used for pumping filtered water in the confluence plate to the outside, a liquid medicine pipe is fixed to the other end of the confluence plate, and the liquid medicine pipe communicates with an external liquid medicine storage box and is used for injecting liquid medicine into the confluence plate. When the MBR membrane is used for filtering sewage, bubbles can be in full contact with the MBR membrane to clean dirt on the surface layer of the MBR membrane through aeration, and the hollow plate can be driven to move up and down in a reciprocating manner through aeration to shake the MBR membrane, so that the dirt on the surface layer of the MBR membrane is further cleaned, the service time of the MBR membrane is prolonged, and the sewage treatment efficiency is improved.

This invention relates to the field of wastewater treatment technology, and in particular to a wastewater purification and reuse device based on a membrane bioreactor. Addressing the limited removal efficiency of pollutants adhering to membrane elements in existing technologies, this invention provides a wastewater purification and reuse device based on a membrane bioreactor. The device includes a treatment tank containing a membrane bioreactor assembly. The assembly includes an assembly frame with multiple membrane elements mounted on it. Scrapers that cooperate with the membrane elements are located on both sides of a horizontal plate. A cleaning assembly also includes a vertically movable frame. When the frame moves downwards, the horizontal plate moves downwards, and the scrapers clean the outer surface of the membrane elements downwards. A movable scraper is located on a support, and a collection box is located on one side of the support. When the scraper moves to one side, the collection box opens. By directly scraping away impurities adhering to the outer surface of the membrane elements, suspended solids, colloidal particles, microbial flocs, and other pollutants on the membrane surface can be removed quickly and effectively.

The invention provides a multi-angle enhanced contact membrane bioreactor which comprises a rotary swing frame, a membrane fan, an MABR membrane assembly, a rotary connecting shaft, an aeration assembly, a driving device and a suspension fixing beam arranged on a membrane pool, the rotary swing frame is movably connected with the suspension fixing beam through the rotary connecting shaft, the MABR membrane assembly is installed on the rotary swing frame, and the aeration assembly is installed on the rotary swing frame. The driving device drives the MABR membrane component and the rotary swinging frame to rotate and swing in a reciprocating manner around the axis of the rotary connecting shaft; the angles of the MABR membrane assembly, the sewage flowing direction, the sludge flowing direction and the aeration flow direction are circularly changed in the swinging process. The device is simple in structural design and convenient and fast to disassemble and maintain; the adjustment flexibility of the motion structure is high, corollary equipment is few, corollary equipment such as folded plates or partition plates for ensuring full contact between the membrane and water flow does not need to be added, dead zones are reduced, and the manufacturing cost is low; and the main swing connecting structure is above the water surface, so that the service life is long.

The present invention provides a membrane bioreactor module including base and upper assemblies between which extend an array of fibre membranes, the module further including four corner supports or columns extending between the base and upper assemblies at least one of which defines an internal fluid pathway from the base assembly to the upper assembly to facilitate the removal of permeate from the base assembly.

The utility model provides biogas slurry treatment equipment for a membrane bioreactor, which relates to the technical field of membrane bioreactors and comprises a treatment tank body, a plurality of groups of flat sheet membrane mechanisms are mounted in the treatment tank body, and X-axis cleaning mechanisms are fixedly connected to the top of the treatment tank body close to the front side and the back side. Y-axis cleaning mechanisms are fixedly connected to the positions, close to the two sides, of the top of the treatment pond body, each X-axis cleaning mechanism comprises transverse guide rollers which are symmetrically arranged, transverse moving assemblies are installed at the tops of the transverse guide rollers, and first connecting blocks are fixedly connected to the tops of the transverse moving assemblies; the Y-axis cleaning mechanism comprises a Y-axis cleaning mechanism and a Y-axis cleaning mechanism, the Y-axis cleaning mechanism comprises longitudinal guide rollers which are symmetrically arranged, transverse cleaning assemblies are fixedly connected to the opposite side faces of the first connecting blocks, first power assemblies are fixedly connected to the two side faces of each transverse guide roller, and the Y-axis cleaning mechanism comprises the longitudinal guide rollers which are symmetrically arranged. Therefore, harmful substances can be conveniently collected and treated in a centralized manner.

This invention relates to the field of wastewater treatment technology, and more particularly to a method for anaerobic ammonia oxidation denitrification in a conductive membrane bioreactor for wastewater with low concentrations of nitrite. Anaerobic ammonia-oxidizing bacteria are inoculated into a conductive membrane bioreactor; the bioreactor is connected to a DC power supply, with a conductive membrane assembly as the cathode and a three-dimensional porous or fibrous conductive carbon material with a high specific surface area as the anode, and a positive bias is applied to the anode; nitrogen-containing wastewater with a nitrite to ammonia nitrogen molar ratio of 1:1.5 to 1:5 is introduced into the electro-enhanced membrane bioreactor, where the anaerobic ammonia-oxidizing bacteria use the conductive carbon material at the anode as an extracellular electron acceptor for biological denitrification. This invention, based on a conductive membrane bioreactor, achieves efficient denitrification even under nitrite-deficient conditions through a dual approach of "electroadsorption enrichment + electrostimulation enhancement." This method is simple to operate, energy-saving, and has broad application prospects.

The utility model relates to the technical field of sewage treatment, and discloses a self-cleaning type MBR (Membrane Bioreactor) membrane module, which comprises a shell, a cover body is movably arranged at the top of the shell, a base is fixedly arranged on the inner bottom wall of the shell, an MBR membrane module component extending to the top of the base is arranged on the inner side of the base, and the MBR membrane module component is arranged on the inner side of the base. According to the self-cleaning type MBR membrane module, the fixing mechanism and the limiting mechanism are arranged, the fixing mechanism is used for fixing an MBR membrane module assembly, an MBR membrane module main body is assembled only by installing the box body in the shell, installing the supporting plate in the base and then installing the cover body on the top of the shell, and the limiting mechanism is arranged on the bottom wall of the base. At the moment, the wedge-shaped rod can push the wedge-shaped block and the vertical plate to move relatively, the vertical plate pushes the clamping block to be attached to the box body for fixation, the clamping plate penetrates through the supporting plate to fix the box body, and the right-angle plate limits the top of the box body through connection of the connecting block, so that assembly of the MBR membrane module assembly is completed, and the purposes of convenient assembly and stable installation are achieved.