335 results about "Biofilter" patented technology

The invention discloses a treatment process of high-nitrile-content wastewater, and belongs to the technical field of wastewater treatment. The method comprises the following steps: (1) pretreatment: adding an alkaline substance into the high-nitrile-content wastewater to adjust the pH value of the wastewater to 9-12, and adding sodium percarbonate for reaction to obtain pretreated wastewater; and (2) sequentially treating the pretreated wastewater through an A / A / O process and a biological filter EBF, and discharging after reaching the standard. According to the treatment process, the treatment cost of the high-nitrile-content wastewater can be effectively reduced, the content of nitrile compounds in the wastewater can be rapidly reduced, the biodegradability of the wastewater can be remarkably improved, and the wastewater can be discharged after reaching the standard.

The invention discloses an ecological fish culture system capable of automatically purifying water. Comprising a user terminal, a cloud data center platform, a purification system, a real-time water quality detection module, a data acquisition and transmission module, an intelligent data analysis and management module, a remote monitoring and early warning module, an abnormal early warning processing module, a water purification linkage module, a data analysis visualization module and a culture system. Compared with the prior art, the aquaculture system has the advantages that the aquaculture system is added, circulating aquaculture of ecological fishes is achieved, a filter tank is established through a biological filter tank module in the aquaculture system by means of microbial populations, and the ecological fishes can be cultured in a circulating mode through the biological filter tank module in the aquaculture system, so that the aquaculture efficiency is improved, and the aquaculture cost is reduced. Harmful substances are converted into harmless substances through specific microbial populations, the harmful substances in water are absorbed by aquatic plants through the multi-stage purification module, and suspended particles and impurities in the water are filtered through mechanical objects such as a filter screen and filter cotton.

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 aquaculture, and discloses a water circulation purification device for aquaculture, which comprises a circulation barrel, the top of the circulation barrel is provided with a detachably connected top cover, and the circulation barrel is internally provided with a multi-stage purification assembly. According to the water circulation purification equipment for aquaculture, the multi-stage purification assembly can effectively remove large-particle impurities, suspended solids, fine particles, organic matter and peculiar smell in water, and the purification efficiency is improved. The equipment is simple in structure and convenient to manufacture, maintain and operate, and the cost is reduced. Through the design of the biological filter material layer, the activated carbon adsorption layer and the oxygenating fine filter cylinder, the water quality purification effect is improved, the content of dissolved oxygen in water is increased, and the water environment is improved. Accurate control over water flow is achieved, energy consumption is reduced, and the development trend of energy conservation and emission reduction is met.

The utility model provides a biofilter filler support frame capable of being quickly installed, which belongs to the technical field of water treatment and comprises a base and a top plate, a bottom plate for placing a filter plate is arranged in the base, support plates for installing the filter plate are arranged on two sides of the bottom plate, and the support plates are also used for limiting the height of support columns. The four corners of the upper surface of the base are provided with inserting openings for fixing the supporting columns, the supporting columns for fixing and supporting the top plate are arranged in the inserting openings, the four corners of the lower surface of the top plate are provided with through openings for facilitating connection of the supporting columns and the positioning blocks, the through openings correspond to the inserting openings, and the tops of the supporting columns are provided with threaded holes for fixing the positioning bolts. A positioning block used for connecting and fixing the top plate and the supporting column is arranged at the top of the through opening, a threaded hole used for fixing a positioning bolt is formed in the positioning block in a penetrating mode, a positioning bolt used for connecting the positioning block and the supporting column is arranged in the threaded hole, and the positioning bolt is in threaded fit with the threaded hole.

The invention relates to the technical field of biological filter groups, in particular to a low-energy-consumption high-efficiency urban and rural small and micro water body biological treatment device which comprises a sewage inlet pipe, a biological filter group and a sedimentation tank, the biological filter group comprises an anoxic and anaerobic tank, aerobic tanks and an adjusting tank, the aerobic tanks are arranged on the front side and the rear side of the anoxic and anaerobic tank, and the adjusting tank is arranged on the front side and the rear side of the anoxic and anaerobic tank. Regulating tanks are arranged on the left side and the right side of the anoxic and anaerobic tank; by arranging the biological filter tank group, the anoxic and anaerobic tank, the aerobic tank and the regulating tank, a one-step two-cycle treatment mode of sewage can be realized, the nitrogen and phosphorus removal efficiency of the sewage is greatly improved, the energy consumption and sludge output are reduced, the overall blockage risk of the system is reduced, the structure is compact, the occupied area is smaller, and the cost is reduced. The system is high in impact load resistance and meets the low-energy-consumption and efficient decontamination requirements of urban and rural small and micro water bodies.

The invention discloses an integrated household sewage treatment device, and relates to the technical field of sewage treatment, a tank body is internally provided with a pretreatment tank, an adjusting tank and a biological filter, the tank body is connected with a water inlet pipe at a position corresponding to the pretreatment tank, the water inlet pipe is used for introducing to-be-treated sewage into the pretreatment tank, the upper end of the pretreatment tank is communicated with the adjusting tank, and the lower end of the pretreatment tank is communicated with the biological filter; the pretreatment tank can discharge pretreated sewage into the adjusting tank, a water distribution element is arranged in the adjusting tank and can distribute the sewage entering the adjusting tank, a filter material element is arranged in the biological filter, and the upper end and the lower end of the biological filter can be communicated with the adjusting tank. The filter material element can be used for treating sewage in the biological filter tank, the treated water in the biological filter tank can enter the regulating tank, a water outlet pipe for discharging the treated sewage is arranged on the corresponding side wall of the tank body, and the water outlet pipe is arranged close to the upper end of the regulating tank. The sewage treatment device is simple in structure, convenient to operate and good in sewage treatment effect.

The utility model discloses a novel deodorizing biofilter structure, including: a pre-wash tank, a biofilter, a circulating water tank and a humidifying water tank, wherein a connecting air duct is fixedly connected between the pre-wash tank and the biofilter, an air distribution assembly is arranged at the bottom of the biofilter, the pre-wash tank and the biofilter are respectively filled with pre-wash tank fillers and biofillers, an air inlet pipe is fixedly connected to the pre-wash tank, and an air outlet pipe is fixedly connected to the biofilter. The utility model evenly arranges a plurality of air distribution branches, so that gas can evenly pass through the biofiller, thus avoiding the phenomenon of local collapse and hardening of the biofiller due to uneven air distribution, and can also serve as an aeration system to provide oxygen for the growth of microorganisms on the filler when necessary, thus avoiding the hardening and hardening of the filler in the filter, maintaining a suitable and stable living environment for the microorganisms inside the filler, achieving better deodorizing effect, more stable operation and longer service life.

The invention discloses a phenol-cyanogen wastewater tail gas deodorization treatment process which comprises the following steps: firstly, intensively collecting tail gas through a system consisting of a sealing cover, a collecting pipeline and an induced draft fan aiming at normal-temperature odor containing ammonia gas, hydrogen sulfide and organic waste gas generated by structures such as an adjusting tank and a floatation tank in a phenol-cyanogen wastewater system of a coking plant; the chemical washing tower is used for removing alkaline substances and the like by using a phosphoric acid solution, the biological filter prewashing section is used for absorbing impurities and humidifying gas by using clear water, the biological section is used for degrading pollutants by using microorganisms, the activated carbon is used for adsorbing residual organic waste gas, and finally, the gas reaches the standard and is discharged through a chimney. The process can effectively reduce the concentration of each pollutant in the waste gas, improves the environment quality, provides treatment demonstration for the industry, and has remarkable environmental and economic benefits.

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 utility model discloses a water inlet oxygen elimination device for an upward flow denitrification biological filter, and belongs to the technical field of biological filters. The device specifically comprises a floating ball (1), a connecting rod (2), an adjusting gate valve (3), a water inlet pipe (4) and a water outlet pipe (5), the water inlet valve is controlled through the floating ball at the upper part of the device, water enters the biological filter at a constant speed, and the height of the floating ball is automatically adjusted along with the flow. And sewage falling is avoided. The falling phenomenon of inlet water is reduced, and dissolved oxygen in the inlet water is reduced. According to the oxygen elimination device, after the upward flow denitrification biofilter is transformed, the consumption of chemicals can be reduced, and the purpose of saving energy is achieved.

The invention discloses a method for enhanced removal of VOCs (volatile organic compounds) and synchronous power generation by a biological filter bed coupled microbial fuel cell system. According to the method, VOCs are introduced into a cathode chamber of a microbial fuel cell and then upwards penetrate through a filler layer of a fungus-bacterium coupled biological filter bed, in the stage, hydrophobic VOCs are adsorbed by fungal hyphae and then are aerobically degraded by bacteria to generate metabolic intermediates, hydrophilic VOCs can be directly degraded by aerobic bacteria, the purified VOCs are discharged from the top, and the purified VOCs are discharged from the bottom of the microbial fuel cell. Hydrophilic VOCs and metabolic intermediates which are not degraded in time can enter an anode chamber of the microbial fuel cell along with the nutrient solution, and the hydrophilic VOCs and the metabolic intermediates are further degraded as power generation substrates and generate electrons (e <->). According to the invention, the fungus-bacteria mixed biological filter bed is coupled with the microbial fuel cell system for treatment, so that enhanced removal is realized, and high-efficiency power generation is also realized.

The invention provides a sponge city river ecological environment comprehensive treatment and later maintenance intelligent management and control platform, and relates to the technical field of urban water environment treatment. Comprising an Internet of Things sensing layer, the Internet of Things sensing layer is composed of a water quality sensor, a flow monitor and a meteorological station, the multistage ecological purification module comprises a front sedimentation tank, an ecological floating island unit, a biological filter and an artificial wetland, the ecological floating island adopts a modified polyethylene base material to plant stain-resistant aquatic plants, and a biological filler is suspended at the bottom of the floating island; and the intelligent management and control system integrates a dynamic water quality model and an AI algorithm, automatically regulates and controls the aeration equipment, the ecological water replenishing valve and the agent adding device according to real-time data, and realizes dissolved oxygen balance and pollutant reduction of the river channel. Dynamic regulation and control of water quality are achieved through the Internet of Things sensing layer and the AI prediction model, the total nitrogen removal rate is stabilized to be 75% or above, the runoff coefficient in the rainstorm period is reduced to 0.45, and 95% of suspended solids are intercepted.

The utility model relates to a multi-process combined multi-barrier real-time monitoring and reduction system for organic matters in water in a waterworks, which comprises a sedimentation tank, a biological filter tank and a clean water tank which are sequentially arranged between a water inlet and a water outlet, the adsorbent can be added at the front end of the sedimentation tank, the gas-water mixing device is arranged at the front end of the biological filter tank and can be opened and closed, the ultraviolet-advanced oxidation generation device is arranged at the front end of the clean water tank and can be opened and closed, and the detection device is used for carrying out online sampling and real-time detection on a collected water sample. The control system is used for selectively adding an adsorbent, selectively opening and closing the gas-water mixing device and selectively opening and closing the ultraviolet-advanced oxidation device according to a detection result of the detection device, and the control system is used for selectively configuring or opening and closing a configuration for improving the organic matter removal rate according to the detection result of the detection device. Through low-cost multi-process combination, a multi-barrier system for reducing odor substances in drinking water production is constructed.

The present invention proposes a water treatment system that couples anoxic biofilters with artificial wetlands, belonging to the field of water treatment technology. The key technical points are: sewage is collected through a pipe network and flows into a water collection pool, and then enters a regulating / anoxic pool through a lift pump. The solid carbon source in the pool provides a carrier for microorganisms while achieving slow-release supplementation of the carbon source, thereby strengthening the denitrification reaction to remove total nitrogen. The system is then transported to a biofilter and a contact oxidation pool by a lift pump, and COD and ammonia nitrogen are removed through carbon oxidation and nitrification reactions. The effluent enters a high-efficiency clarifier, and after most of the total phosphorus and SS are removed through chemical phosphorus removal and coagulation and sedimentation, the overflow enters an artificial wetland, and is subjected to a comprehensive treatment of plant-microorganism-filler to deeply purify the pollutants and meet the discharge standards. Using the water treatment method of the present application, the effluent water quality can be improved to the Class B emission standard.

The invention relates to the technical field of aquaculture, and discloses a factory-like circulating aquaculture system and method for aquaculture, and the system comprises one or more aquaculture units, a biological filtration unit and a water circulation filtration unit. Water in the culture ponds in the culture units flows into the microstrainers through independent water outlet pipes at the bottoms of the culture ponds to be primarily filtered, so that suspended particles such as residual feed and excrement in the water are effectively removed (discharged into the sewage pond); particulate matters such as residual feeds and excrement in water bodies are quickly pressed into the microfilters by the aid of high pressure of the water bodies during drainage at the bottoms of the culture ponds, and accordingly the removal efficiency of suspended particles in the water bodies of the culture ponds can be greatly improved; harmful substances such as ammonia nitrogen and nitrite in the water body are removed, the water quality is further improved, and the problems that an existing system is low in suspended particulate matter treatment efficiency, poor in biochemical treatment effect, high in cost, poor in circulation balance and the like are effectively solved.

The utility model discloses an assembled biological filter adopting a filter box and belongs to the field of biological filters. Comprising a biological filter peripheral wall body, a bottom plate, a water inlet pipe, a backwashing gas inlet pipe, a backwashing water inlet pipe, a filter head, a filter plate, a bracket, a filter box, a filter box top box, a water inlet and outlet weir, a water inlet channel, a backwashing gas branch pipe and a backwashing water branch pipe, the filter plate is placed on the bracket and is provided with a filter head; a plurality of filter boxes are placed on the filter plate assembly and are arranged in a one-layer or multi-layer array, the filter plates are densely distributed on the bottommost layer, and a filter box top box is adopted on the uppermost layer; a water inlet pipe, a backwashing air inlet pipe and a backwashing water inlet pipe are arranged on the side surface of the lower part of the tank body; a backwashing gas branch pipe and a backwashing water branch pipe are arranged below the filter plate in the tank body; the water inlet pipe is correspondingly positioned below the filter plate; the bottom of the water inlet channel is communicated with the lower part of the filter plate of the tank body through a water inlet pipe. Filter materials are independently packed, head loss during backwashing is reduced, and operation and maintenance are convenient and simple.

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 invention discloses a method for monitoring growth and renewal of a biological membrane in a denitrification deep bed ceramsite filter tank, and belongs to the technical field of water treatment. On the basis of the quality of inlet and outlet water of the biological filter, the growth degree of the biological membrane, the blockage degree of the filter and the blockage coefficient of a filter layer of the filter are calculated, so that the growth and renewal state of the biological membrane in the filter is relatively accurately judged; and the filter operation stages are divided based on the fitting slope of the filter layer blockage coefficient of the filter, so that the blockage degree of the filter can be more accurately judged, and a reasonable backwashing period is set according to the blockage degree. Meanwhile, the backwashing period is optimized based on the normal distribution of the effluent turbidity, so that the backwashing time can be accurately controlled, the backwashing is prevented from being too frequent or insufficient, the energy consumption is saved, and the operating efficiency of the filter tank is guaranteed.

The utility model provides a waste gas treatment biofilter with a sliding nozzle, which belongs to the technical field of waste gas treatment and comprises a treatment tank, the treatment tank comprises a cleaning tank and a reaction tank, and a replacement component for replacing materials in the cleaning tank is arranged on the cleaning tank; a sliding assembly for spraying the inside is arranged on the reaction tank; the replacement assembly comprises two guide rails symmetrically arranged on the two sides of the top of the treatment pond, a lifting plate is slidably arranged on the guide rails, and through combined use of the replacement assembly and the sliding assembly, on one hand, dust and other impurities in waste gas are effectively removed during pretreatment, and the subsequent degradation effect of microorganisms on the waste gas is prevented from being affected; on one hand, the position of the sliding platform is adjusted through a sliding rail and a servo motor in the sliding assembly, so that the nozzle movably sprays microorganisms in the reaction tank, the microorganisms in the reaction tank are fully wetted, the microorganisms fully react with waste gas, and the waste gas is effectively degraded.

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 a method for quickly enriching sulfur disproportionated bacteria, which is characterized in that the concentration of hydrogen sulfide in a reaction system is stably controlled below 40mg-S / L by optimizing culture conditions, including but not limited to the technical means of improving the replacement frequency of a disproportionated bacteria culture solution, adopting gas stripping and the like, so that the quick enrichment of sulfur disproportionated bacteria is realized. Compared with the prior art, an elemental sulfur biological filter does not need to be additionally built, and the operation process is simplified; the use of nitrate is avoided, and the management risk of chemicals easy to explode is avoided; the relative abundance of the sulfur disproportionation bacteria is remarkably improved, and an efficient, economical and feasible technical scheme is provided for large-scale application of the sulfur disproportionation reaction in sewage treatment.

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.