210 results about "Biofilter" patented technology

The invention relates to the technical field of water treatment, in particular to a prawn fry raw water biological filter treatment device. According to the technical scheme, the device comprises a pretreatment box, a disinfection box, an adjusting plate, a fine treatment box, a motor and a purification box, a screw is arranged at the output end of the motor, a nut in threaded installation with the screw is arranged at the upper end of the adjusting plate, the outer wall of the adjusting plate is sleeved with an air bag, an air pump is arranged at the upper end of the adjusting plate, and the air pump and the air bag are communicated and provided with an air supply pipe; a pressure relief valve is arranged in the air supply pipe, a disinfection box is arranged on one side of the lower portion of the fine treatment box, sealing gaskets are arranged on the inner wall of the fine treatment box and the outer wall of the purification box, overflow holes are formed in the side wall of the lower end of the purification box, and a filter material layer is arranged in the purification box. Through modular design, the efficiency and economical efficiency of prawn fry raw water treatment are remarkably improved, and the problems that a large-area biological filter cannot flexibly adjust the treatment capacity and is difficult to adapt to different scale requirements are solved.

The invention relates to the technical field of wastewater treatment, and provides a papermaking wastewater precipitation and recovery device which comprises air flotation equipment and a filter tank, and further comprises a filter cartridge, a wastewater pipe, a backwashing recovery assembly, a biological filter tank and a biological filter assembly, the two ends of the filter cartridge are sealed and rotationally sleeved with bearing supports respectively, and the two bearing supports are symmetrically arranged; a mounting rack is mounted on the filter tank, a bearing bracket is fixedly mounted in the mounting rack, a wastewater pipe is fixedly mounted on the mounting rack, a backwashing recovery assembly is mounted in the filter cartridge, a water distribution tank, a filter area and an overflow area are arranged in the biological filter tank, and a biological filter assembly is mounted in the biological filter tank. The problems that in the prior art, fine fibers, colloids and mixed impurities in waste water are prone to blocking a filtering structure, the waste water treatment process is discontinuous, frequent shutdown is needed for cleaning the filtering structure, and the overall treatment efficiency and stability are low are solved.

The invention relates to the technical field of water treatment, and discloses a multi-stage linkage water quality purification treatment method for drainage basin treatment, which comprises the following steps: reducing the flow rate of drainage basin runoff entering a pretreatment pool by using a stepped energy dissipation ridge; an overflow weir is arranged between the pretreatment pool and the biochemical purification unit, runoff with the flow lower than a threshold value is guided to the biochemical purification unit according to a water level pressure head, and excessive flow is guided to a bank zone ecological buffer zone; enabling the runoff to sequentially flow through the anaerobic biological filter tank and the aerobic ecological tank, and generating gravity flow by utilizing a unit elevation difference; according to the invention, the self-adaptive flow distribution is realized by utilizing a water level physical signal, the scouring stripping of a microbial film of a biochemical unit by a dynamic load is effectively prevented, and the stability of the effluent quality of the system is maintained through kinetic energy level conversion.

The utility model relates to the field of biological filter beds, in particular to a microorganism pollution and carbon reduction device based on an efficient composite biological filter bed, which comprises a tank body, a transmission case is fixedly connected to the top of the tank body, a spraying rod is movably connected to the top of the inner wall of the tank body, and a support frame is fixedly connected to the upper part of the inner wall of the tank body. The middle of the bottom of the supporting frame is movably connected with a placement frame, a microorganism filler box is inserted into the inner wall of the placement frame, the middle of the right side of the tank body is fixedly connected with an adjusting box, the right side of the adjusting box is fixedly connected with a control table, a rotation mechanism is arranged in the adjusting box, and a rotating mechanism is arranged in a transmission box. According to the utility model, the alternation of the microbial filler boxes and the uniform water spraying of the spraying rod are realized, and the high efficiency and the uniformity of the device are improved.

The application provides a biological denitrification treatment method for low-carbon-nitrogen-ratio wastewater, and utilizes single-stage nitrification and denitrification to treat ammonia-nitrogen wastewater in a one-piece submerged biological filter (SBAF reactor). The method comprises the following steps: sludge inoculation, sludge biofilm formation, system starting, and stable operation. In the sludge inoculation, sludge meeting the microbial community distribution is selected. In the system starting process, the microbial community distribution in the sludge in the one-piece submerged biological filter (SBAF reactor) is used as the symbol of successful system starting. During the input of the high-concentration ammonia-nitrogen wastewater to be treated, the aerobic nitrifying bacteria and the anaerobic denitrifying bacteria can more stably meet the above microbial community distribution, the system has better stability, the stable operation time is longer, the sludge does not need to be replaced for restarting during the stable operation, the continuous operation time is longer, can reach at least 250 days or more, and the frequency of replacing the sludge for restarting is reduced.

The invention discloses photovoltaic driving type integrated biological filter equipment and a denitrification method thereof, and relates to the technical field of biological filters, the biological filter equipment comprises a biological filter and a photovoltaic driving unit, the photovoltaic driving unit comprises a photovoltaic power generation module, an execution module and a denitrification reaction module, the denitrification reaction module monitors the illumination intensity and the ammonia nitrogen concentration of the sewage in the biological filter in real time, and distributes photovoltaic electric energy to the denitrification reaction module or other units needing power supply on the basis of comparison of the monitored illumination intensity and the ammonia nitrogen concentration of the sewage in the biological filter with a preset threshold, so that the energy use efficiency is optimized; the denitrification reaction module is arranged in the biological filter, controllable current is applied to accelerate denitrification of the biological filter, ammonia nitrogen is directly oxidized at an anode or indirectly oxidized through active chlorine, hydrogen is generated at a cathode to serve as a denitrification electron donor, nitrate is accelerated to be reduced into nitrogen, and the problem that a traditional denitrification carbon source is insufficient is solved.

The utility model discloses a scattered household black water treatment and resource utilization device which comprises an anaerobic fermentation tank, an aerobic nitrification tank, a denitrification nitrogen removal tank, a biological aerated filter, a cascade artificial wetland and a water storage tank which are sequentially communicated, a discharging device for discharging biological fertilizer is arranged on one side of the bottom of the anaerobic fermentation tank, and a water outlet higher than the discharging device is formed in one side of the anaerobic fermentation tank. According to the technical scheme provided by the utility model, germs, parasitic ova and the like are killed through anaerobic fermentation, meanwhile, high-quality organic fertilizer can be generated, then the technologies of aerobiotic treatment, anoxic treatment, biofilter treatment, constructed wetland treatment and the like are combined, pollutants in black water are further degraded, the quality of effluent water is improved, and the effluent water is reused for irrigation of vegetable fields, farmlands, forest lands and the like. And the organic fertilizer is recycled to the farmland to improve the soil fertility, so that the effective treatment and resource cyclic utilization of the black water of the scattered households are realized.

The utility model discloses a bio-trickling filter tank filled with ceramsite filter materials, which comprises a tank body, and the tank body internally comprises a water distribution area, a filler area and a water production area which are separated by a jacking layer and a bearing layer and are communicated with one another from top to bottom; a water inlet pipe and a water outlet pipe of the tank body are respectively communicated with the top and the bottom of the tank body; a self-rotating water distributor connected with the water inlet pipe is mounted in the water distribution area and is used for uniformly distributing sewage entering through the water inlet pipe onto the filler area; the filler area is filled with a ceramsite filter material for microbial biofilm formation and is used for purifying sewage uniformly distributed in the filler area; the water producing area is used for collecting clear water purified by the filler area, and the collected clear water is discharged through a water outlet pipe. The biological trickling filtration tank adopts an integrated structure, the civil engineering cost can be reduced, the ceramsite filter material is light in weight and low in price, the sewage treatment effect is good, rural domestic sewage can be conveniently and movably treated, and the possibility that equipment is idle is reduced.

The utility model discloses a biological filter for sewage treatment, and relates to the technical field of sewage treatment, the biological filter comprises a treatment chamber, an aeration assembly and a decontamination assembly, a biological filter layer is arranged at the upper part in the treatment chamber, the aeration assembly is arranged at the lower part in the treatment chamber, a motor mounting frame is fixed at one side in the treatment chamber, and the motor mounting frame is fixed at the other side in the treatment chamber. And a linear motor is slidably mounted in the motor mounting frame, a dirt removal assembly is mounted below the linear motor and comprises a fixing rod, a dirt removal scraper, a connecting rod, a lantern ring and an annular scraper, and the dirt removal scraper is connected to the bottom of the fixing rod. According to the biological filter for sewage treatment, a sewage cleaning scraper of the sewage cleaning assembly can move to clean sludge on the bottom surface of the treatment chamber, the sludge is intensively pushed to one side of a sewage discharge pipe so as to facilitate timely sewage discharge, and meanwhile, the movement of the sewage cleaning scraper can drive a connecting rod and a lantern ring to synchronously move; and the annular scrapers on the two sides of the lantern ring can descale the surface of the aeration pipe.

The present application relates to sewage treatment technical field, disclose a kind of rural sewage treatment system, including filter tank, biological filter, ecological filter, purification tank and disinfection tank, and filter tank is equipped with grating device;Biological filter is equipped with filler area and aeration pipe, and the sewage of treatment cavity is transported to biological filter by lifting pump;Ecological filter includes amphibious plant area, aquatic plant area and microalgae area, amphibious plant area includes first pool body and planted amphibious plant;Aquatic plant area includes second pool body and planted aquatic plant;Microalgae area includes third pool body and planted microalgae, and the upper portion of purification tank is equipped with water outlet, and multiple modified ceramsite columns are uniformly arranged in purification tank, and the inner pool wall in disinfection tank is equipped with multiple ultraviolet lamps.The present application is suitable for the change of water pollution load, improves sewage treatment stability, improves effluent quality, to reach reuse irrigation standard.

The invention relates to the technical field of water treatment, in particular to a composite treating agent for municipal sewage and a preparation method thereof.The composite treating agent is prepared by selecting industrial solid waste boric sludge, fly ash and the like as raw materials, taking biomass raw material epoxidized soybean oil as a binder, taking biomass raw material starch and plant-based porous carbon as adsorbents, mixing the raw materials with sodium silicate and water for granulation, and preparing the composite treating agent. The baking-free composite treating agent integrating multiple functions of sulfur autotrophic denitrification nitrogen removal, phosphorus removal, heavy metal chelating, porous carbon adsorption and the like is prepared, and when the baking-free composite treating agent is applied to urban sewage treatment, synchronous low-carbon and high-efficiency removal of various pollutants such as nitrogen, phosphorus and heavy metal can be achieved; after being granulated and formed, the composite treatment agent can be used as a filler of a biological filter to support the growth of sulfur autotrophic denitrifying bacteria, and can also be directly added into a pretreatment unit or an advanced treatment unit of a sewage treatment system.

The application relates to the field of sewage treatment, and discloses a sulfur autotrophic denitrification biofilter composite filler and a preparation method thereof. The method comprises the following steps: carrying out a silane hydrolysis reaction on a silane coupling agent containing a mercaptan group to prepare a hydrolysis solution, and then adding hydroxylated polystyrene microspheres into the hydrolysis solution to carry out a grafting reaction and prepare the sulfur autotrophic denitrification biofilter composite filler. The method grafts mercaptan groups to the surface of the polystyrene microspheres by using the silane coupling agent containing the mercaptan group. The mercaptan groups can specifically combine with sulfur transport proteins on the cell membrane of sulfur autotrophic denitrification microorganisms, so that the sulfur autotrophic denitrification microorganisms can selectively colonize on the surface of the polystyrene microspheres, competition between other microorganisms and the sulfur autotrophic microorganisms can be avoided, the colonization stability of the sulfur autotrophic microorganisms is improved, and the biofilm formation efficiency is improved.

The utility model discloses a device for on-line replacement of a spraying system in a biological filter, which comprises a sewage pipe, a spraying pipe and a spraying head, a water pipe bayonet is arranged on the sewage pipe, a clamping component matched with the water pipe bayonet is arranged at the joint of the sewage pipe and the spraying pipe, and the spraying head is arranged on the spraying pipe. A water retaining cap matched with the clamping assembly is installed at the bottom of the water pipe bayonet, a filtering box is installed at the joint of the spraying pipe and the spraying head, and a filtering assembly is installed in the filtering box. Compared with the prior art, the spraying device has the beneficial effects that the clamping assembly which is convenient to disassemble is arranged between the spraying pipe and the sewage pipe and is matched with the filtering assembly which is convenient to replace and is arranged above the spraying head, so that the replacing and cleaning efficiency of the spraying assembly is improved, the operation procedures are reduced, and the spraying assembly is convenient to disassemble and replace quickly.

The application discloses a biofilter and relates to the technical field of sewage treatment, which comprises a filter body, an aeration pipe is fixedly installed at the bottom end of the filter body, a support frame is arranged around the aeration pipe, the support frame comprises vertical rods and horizontal rods which are fixedly connected with each other, the vertical rods are fixedly connected with the filter body, the top end of the horizontal rods is provided with a same biofilter membrane, a liquid outlet cabin is arranged on one side of the filter body, slag prevention pieces are rotatably connected to the two sides of the vertical rods, the slag prevention pieces comprise slag blocking shells and mounting plates which are fixedly connected with each other, gas flows out through the gas passing holes of the slag blocking shells, the slag blocking shells have a certain blocking effect on solid particles in waste gas, a pretreatment cabin and a prefiltering screen for pretreating waste gas are arranged on one side of the filter body, and the waste gas is treated for multiple times, so that the technical problem that solid particles in waste gas easily cause the biofilter membrane to be blocked and affect the filtering effect of the biofilter membrane on waste gas is solved.

The utility model belongs to the technical field of odor treatment, and provides a BIM (Building Information Modeling)-based biochemical treatment deodorization device, which comprises a biological deodorization tower, a BIM-based biochemical treatment deodorization device and a BIM-based biochemical treatment deodorization device, and is characterized in that the biological deodorization tower comprises a pre-washing tank and a biological filter tank, a plastic filler area is arranged in the pre-washing tank, a biological filter material area is arranged in the biological filter tank, and the pre-washing tank is communicated with the biological filter tank; an air outlet of the fan is communicated with the inner top of the pre-washing pool; the circulating water tank is communicated with the inner bottom of the pre-washing pool; an inlet of the spraying pump is communicated with the circulating water tank, an outlet of the spraying pump is communicated with the upper calandria, nozzles are arranged at the tops in the prewashing pool and the biological filter, and the nozzles are communicated with the upper calandria through connecting branch pipes; and the control cabinet is electrically connected with the fan and the spraying pump. According to the device, odor substances are subjected to two-stage deodorization by utilizing the plastic filler area and the biological filter material area in the biological deodorization tower, so that the deodorization effect is guaranteed. Gas in the biological deodorization tower is treated through spraying water collected at the bottom in the pre-washing pool, humidification and temperature adjustment circulation in the tower is formed, and the requirement for the deodorization operation environment is met.

The utility model discloses a coagulative precipitation and full-automatic filter tank up-down type water purifier which comprises a coagulative precipitation tank body and a biological filter tank body, the coagulative precipitation tank body and the biological filter tank body are stacked, and the coagulative precipitation tank body is positioned below the biological filter tank body; a plurality of first partition plates are arranged in the coagulative precipitation tank body and divide an inner cavity of the coagulative precipitation tank body into a plurality of parts, namely a lifting tank, a mixing tank, a flocculation tank and a precipitation tank; a plurality of second partition plates are arranged in the biological filter tank body and divide the inner cavity of the coagulating sedimentation tank body into a plurality of parts, namely an aerobic biological filter tank, an anoxic biological filter tank and a clear water tank. The device is small in occupied area, low in operation cost and simple and convenient to maintain, and meets the requirements of application scenes such as feed water treatment, sewage regeneration and reuse, river and lake enhanced treatment and industrial wastewater deep treatment.

The utility model relates to biological filter bed technical field especially high -efficient composite biological filter bed's temperature and humidity control structure, including sampling pipe, the end of sampling pipe connects many branch pipes, the branch pipe inserts biological filler area, the bottom of biological filler area sets up bottom support frame, the one side of bottom support frame sets up waste gas air inlet pipe, the top of waste gas air inlet pipe sets up air inlet, the bottom of waste gas air inlet pipe communicates pretreatment area, the bottom of pretreatment area communicates air -guide equal -flow track, air -guide equal -flow track communicates biological filler area, the inner chamber top of biological filler area sets up a plurality of biological filler shower head, this high -efficient composite biological filter bed's temperature and humidity control structure can ensure that microorganism is in the most suitable growth temperature and humidity range, promotes the technology application and management to be more universal.

The application relates to the technical field of glass steel equipment, and relates to a glass steel biological filter deodorization equipment. The deodorization equipment comprises a biological pool and a pre-washing pool. The pre-washing pool is provided with a circulating pipeline, odor gas enters the pre-washing pool through the circulating pipeline, the pre-washing pool is filled with water covering the water inlet position, and a flow guide member for slowing down the gas flow speed is arranged on the inner side of the water inlet end of the pre-washing pool. A wind pipe and a shunt cavity are arranged between the biological pool and the pre-washing pool and are connected in front and back. The input end of the wind pipe is located on the top of the water outlet end of the pre-washing pool. The wind pipe is an n-shaped channel structure. The wind pipe is provided with a first spraying device. The shunt cavity is located at the bottom of the biological pool. The biological pool is provided with a stirrer. The application can help solve the problems of poor gas-liquid mixing effect and easy hardening and difficult maintenance of the biological pool.

The application discloses a vertical subsurface flow and intermittent aeration microbial filter wetland system, which comprises a comprehensive water inlet pipe gallery arranged at the upstream of the wetland, a water outlet pool arranged at the downstream of the wetland and a lower microbial filter arranged between the comprehensive water inlet pipe gallery and the water outlet pool, and the top of the lower microbial filter is provided with an upper subsurface flow wetland structure; the comprehensive water inlet pipe gallery comprises a comprehensive water inlet pool with an opening facing upwards, and a plurality of columnar water inlet holes are formed in the side wall of the comprehensive water inlet pool close to the lower microbial filter; the lower microbial filter is filled with porous medium carrier fillings; the whole wetland system adopts a double-layer cooperative purification design, the lower microbial filter completes the core degradation of organic pollutants, nitrogen and phosphorus in sewage, and the upper subsurface flow wetland structure performs deep purification on residual pollutants, so that the two layers of structures perform their respective functions and cooperatively treat the sewage, and the overall purification effect of the sewage and the pollutant removal rate are greatly improved.

The present application belongs to the technical field of environmental protection, and particularly relates to a high-concentration odor combined treatment device and method for kitchen waste. The odor pretreatment unit of the treatment device comprises an alkali washing tower and an acid washing tower, and the outlet of the alkali washing tower is connected to the inlet of the acid washing tower. The odor biological treatment unit is a combined biological filter tank, which comprises a biological trickling filter section, a pre-washing section and a biological filter section connected in series, and the inlet of the biological trickling filter section is connected to the outlet of the acid washing tower. The odor deep treatment unit comprises a double-mediator barrier low-temperature plasma equipment, a delay oxidation tower and a spraying tower connected in series, and the inlet of the double-mediator barrier low-temperature plasma equipment is connected to the outlet of the biological filter section. The double-mediator barrier low-temperature plasma equipment is used for removing residual refractory odor substances in the gas. The delay oxidation tower is used for prolonging the gas residence time, and the spraying tower is used for the final purification of the gas. The present application can efficiently and accurately remove odor-causing substances, and the treated gas can meet the environmental protection requirements.

An integrated biofilter for a re-circulating aquaculture system is provided. The biofilter may include a moving bed biofilm reactor (MBBR) with biomedia elements configured to support bacteria growth and nitrification of the wastewater and an MBBR output configured to output biomass generated by the bacteria. The biofilter may also comprise a periphyton biofilter configured to introduce oxygen into the wastewater, and a halophyte biofilter comprising a plurality of plants. The halophyte biofilter configured to capture nutrients in the wastewater to generate edible plant mass.

The utility model discloses an odor treatment and recovery system which comprises a to-be-treated gas collecting pipe, a nitrogen recovery mechanism and an exhaust pipe which are sequentially connected in a matched mode, the nitrogen recovery mechanism is used for treating to-be-treated odor which is conveyed by the to-be-treated gas collecting pipe and comes from a breeding house into odorless gas, and the exhaust pipe is used for exhausting the odorless gas; the nitrogen recovery mechanism comprises a biological filter, a sedimentation tank, a spraying device and a gas distribution device, the spraying device and the gas distribution device are arranged in the biological filter, the biological filter is filled with activated sludge and connected with the sedimentation tank through a sludge conveying pipe, the activated sludge is conveyed to the sedimentation tank through the sludge conveying pipe, and a sludge discharging pipe is arranged on the lower portion of the sedimentation tank; the sludge discharge pipe is connected with the sedimentation tank and the excrement temporary storage tank; the spraying device is connected with the medicament box through the circulating water pipe; a gas hood is arranged at the tail end of the to-be-treated gas collecting pipe, is positioned in the biological filter tank, prevents mist and to-be-treated odor from flowing back into the to-be-treated gas collecting pipe, and fixes nitrogen elements in the odor into sludge for composting.

The utility model relates to a decarburization biological filter which comprises a filter body and an aeration pipeline, and an aerobic filler layer and a hydrolytic acidification filler layer which are layered up and down are arranged in the filter body and are both filled with iron-carbon-based biological carrier filler. Wastewater enters from a water inlet at the bottom of the tank and flows through the hydrolytic acidification layer, iron-carbon filler releases ferrous ions and reducing active substances through a micro-electrolysis reaction in an anaerobic environment, macromolecular organic matters are decomposed into micromolecular fatty acids in cooperation with hydrolytic acidification florae, and water flows into the aerobic layer and flows into the aerobic layer. Aerobic microorganisms attached to the surface of the filler mineralize small-molecular organic matters into carbon dioxide and water under aeration oxygen supply, ferrous ions are oxidized into iron ions and flocculate and adsorb pollutants, hydroxyl radicals generated by micro-electrolysis oxidize refractory substances, the iron ions precipitate and flow back to the lower layer to form circulation, and the pollutants are recycled. A symbiotic reaction system is constructed through electron transfer between filler layers and the synergistic effect of microorganisms, deep coupling of physicochemical and biochemical reactions is achieved, the removal efficiency of refractory pollutants is remarkably improved, and the technological process is simplified.

The invention provides a rural domestic sewage treatment system of an enhanced biological filter, which sequentially comprises a pretreatment unit, a biological filter unit, a biological filter unit and a sewage treatment unit along the water flow direction, and the pretreatment unit comprises a grating, a regulating tank and a hydrolysis acidification tank; the core biological treatment unit is communicated with a water outlet of the pretreatment unit, and the core biological treatment unit is formed by connecting a multi-stage anaerobic biological filter and a baffling type micro-aeration biological filter in series; and the deep treatment unit is communicated with the water outlet of the core biological treatment unit and comprises an inclined plate sedimentation tank and a cloth filter tank. The invention aims to overcome the defects of the existing rural domestic sewage treatment technology, particularly a centralized treatment technology, in the aspects of coping with complex water quality and cold climate, decentralized management, cost control and the like. The enhanced biological filter sewage treatment system and the enhanced biological filter sewage treatment method provided by the invention can stably operate under various terrain and climate conditions (especially in high and cold areas and high altitude areas), and are high in treatment efficiency and low in construction and operation cost.

This invention proposes a single-point multi-source water quality monitoring system for factory-scale aquaculture, comprising an aquaculture pond, a microfiltration pond, and a biofilter pond that are sequentially fluidly connected and form a water circulation system. The system further includes a first water pump, a second water pump, and a third water pump respectively installed in the aquaculture pond, the microfiltration pond, and the biofilter pond. The output ends of the first, second, and third water pumps are fluidly connected to a measuring water tank via pipes. The measuring water tank is equipped with a multi-functional sensor for monitoring water quality. The bottom of the measuring water tank is fluidly connected to the microfiltration pond via a drain solenoid valve. The first, second, and third water pumps, the multi-functional sensor, and the drain solenoid valve are signal-connected to a core control board. This invention solves the problem of water quality monitoring and data comparison across multiple aquaculture water units in a factory-scale aquaculture workshop, and has advantages such as good stability, high integration, and low cost.

The utility model relates to an integrated coal-fired power plant heavy metal-containing sewage treatment system and belongs to the technical field of water pollution control. The system is connected with a grit chamber, a microfiltration membrane filter, an ozone catalytic oxidation unit, a photocatalytic oxidation unit, an electrochemical oxidation unit, an ion exchange unit, a magnetic nano adsorption unit and an anaerobic biological filter in sequence through a water inlet through a grid. The anaerobic biological filter is connected with a membrane biological reactor and a reverse osmosis system through an aerobic biological reactor. The utility model system adopts compact design, has small land occupation, low operation cost, stable and efficient treatment effect, and the effluent quality reaches the national discharge standard or reuse requirement. The utility model not only significantly improves the removal efficiency of heavy metal ions, but also realizes energy recovery through sludge anaerobic digestion and biogas power generation, having remarkable environmental benefits and economic value.

This invention discloses an anti-clogging biofiltration device coupled with a microbial fuel cell, applied in the field of biofiltration technology. It includes: a biofilter consisting of a porous media coarse filter layer, a cathode region, and an anode region arranged sequentially from top to bottom; a Helmholtz coil array deployed around the biofilter; and an external circuit that, together with the anode and cathode regions, constitutes the microbial fuel cell. The microbial fuel cell provides self-sufficient power to the cathode region, anode region, and Helmholtz coil array for anti-clogging biofiltration. This invention effectively solves the problems of accumulated clogging in EPS (expanded power filters) and the inability to clean the bottom filter media, and realizes self-generated electricity for the microbial fuel cell.

The invention relates to a quick starting method of a biological filter bed based on fungus-bacterium coordinated regulation. The quick starting method adopts a two-step method and comprises the following steps: firstly, quickly starting a bacterium filter bed by taking benzyl alcohol as a carbon source; adjusting the pH value to 5.5-6.2, adding wheat bran, and implementing intermittent hypoxia stimulation (replacing antibiotics) until the absolute copy number ratio of fungi / bacteria is (F / B) gt; and the starting is finished when the temperature is 0.35. The whole process is free of antibiotics, the starting period is smaller than or equal to 14 days, the methylbenzene removal rate is larger than or equal to 95%, the mineralization rate is larger than or equal to 80%, and the method is remarkably superior to the prior art and suitable for large-air-volume and low-concentration hydrophobic VOCs treatment.

The invention relates to the technical field of sewage treatment, and discloses a household type domestic sewage filtering device for sewage treatment, the household type domestic sewage filtering device comprises a sedimentation tank, a filtering plate is slidably connected in the sedimentation tank, a blow-off pipe is fixedly connected in the sedimentation tank, and a conveying assembly is arranged in the blow-off pipe. A fixing plate is fixedly connected to one side of the sedimentation tank, a cleaning assembly, a moving assembly and a lifting assembly are arranged in the fixing plate, a supporting plate is fixedly connected to one side of the sedimentation tank, and a recycling assembly is arranged at the top of the supporting plate. By highly integrating pretreatment, biological purification, adsorption filtration, ecological treatment, resource recycling and other technologies, the efficient and stable treatment effect is achieved, the impact load resistance is high, meanwhile, the occupied area is very small, the vertical flow sedimentation tank and the basket grating are arranged for sewage pretreatment, and the problem that a traditional biological filter is prone to being blocked is solved.

The invention belongs to the technical field of livestock and poultry breeding wastewater treatment and agricultural reuse, and particularly relates to an electrochemical enhanced low-pressure ultrafiltration system and method for livestock and poultry breeding tail water reuse, and the electrochemical low-pressure ultrafiltration system comprises a water inlet tank, a constant water level water tank, a gravity-driven low-pressure ultrafiltration membrane assembly, a water collecting device and a constant-voltage driving power supply; the gravity-driven low-pressure ultrafiltration membrane assembly comprises a reactor, and an anode, an ultrafiltration membrane and a cathode pre-filtering layer which are arranged in the reactor, wherein the cathode pre-filtering layer consists of a biological filter cake layer and a cathode. According to the electrochemical enhanced low-pressure ultrafiltration system and the electrochemical enhanced low-pressure ultrafiltration method for recycling livestock and poultry breeding tail water, the electrochemical enhanced gravity-driven low-pressure ultrafiltration system driven by external source constant voltage is adopted according to the characteristics of livestock and poultry breeding waste water tail water; heavy metal reduction, antibiotic degradation, pathogen interception, resistance gene transmission inhibition and membrane pollution control can be synchronously realized under the condition of low energy consumption, nitrogen and phosphorus resources in wastewater are reserved, and safe recycling of agricultural irrigation is guaranteed.