455 results about "Biofilter" patented technology

The invention discloses a modified ceramsite filler based on iron-sulfur autotrophic denitrification as well as a preparation method and application thereof, and belongs to the technical field of sewage treatment. The modified ceramsite filler based on iron-sulfur autotrophic denitrification is ceramsite loaded with a modifier; the modifier comprises the following components: iron powder, pyrite powder and biochar; the mass ratio of the iron powder to the pyrite powder to the charcoal is 3: 6: 1; the mass ratio of the modifier to the ceramsite is 1.5: 1. The iron powder (zero-valent iron), the pyrite powder and the biochar are combined to modify the common ceramsite, the denitrification effect of the biofilter on low C / N wastewater is greatly improved, and under typical experimental conditions, the denitrification rate of the biofilter containing the modified ceramsite filler on low-carbon-nitrogen-ratio wastewater is improved by 90% or above compared with that of a common ceramsite biofilter. And the modified ceramsite filler prepared by the invention can obviously improve the phosphorus removal effect of the biological filter on wastewater with low carbon nitrogen ratio.

The invention relates to the technical field of air pollution prevention and control, in particular to a sewage deodorization system and method based on a biological filter, and the system comprises a data acquisition module, a system preprocessing module, a system deodorization effect evaluation module, a system operation performance evaluation module, a system efficiency comprehensive analysis and processing module and a system database. According to the sewage deodorization system and method based on the biological filter, the system performance and the deodorization efficiency are comprehensively analyzed, and comprehensive system energy efficiency evaluation is provided. By analyzing the two indexes, the strong and weak points of the system can be identified, so that the resource configuration is optimized, and the overall efficiency of the system is improved. The deodorization effect and the operation performance are comprehensively considered, and more comprehensive and more accurate decisions can be made. By improving the deodorization effect, adverse effects on the surrounding environment and residents can be reduced. Meanwhile, the good operation performance can help to reduce the maintenance and operation cost.

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.

A microbial electrochemical filter and a method for using same to remove iron, manganese and ammonia nitrogen from underground water, which belong to the technical field of wastewater treatment. The filter and the method solve the problem of existing biological filters having poorer operation performance and stability under oligotrophic conditions. The microbial electrochemical filter comprises a cylinder (1), an electrochemical system, and a filter column (4), wherein the electrochemical system and the filter column (4) are arranged in the cylinder (1); the electrochemical system is arranged above the filter column (4); the filter column (4) consists of a carrier, a surface of which is covered with a biological film; and a water outlet (8) is provided in a lower portion of a side wall of the cylinder (1), and an overflow port is provided in an upper portion of the side wall of the cylinder (1). In the method, by means of an electro-oxidation process, some pollutants are removed before entering a filter column (4), thus reducing the bioremoval pressure in the filter column (4); the abundance and carbon sequestration capability of autotrophic microbes in a biological filter are enhanced by means of an electrochemical system, thereby providing an additional carbon source and an additional electron acceptor for the autotrophic biological filter, and prompting the growth and metabolism of biological communities; and the microbial electrochemical filter provides conditions for the growth of heterotrophic iron-manganese oxidizing flora, and achieves the generation and coverage of more iron-manganese active oxide films on the surfaces of filter materials.

The invention discloses a multipurpose biological filter treatment device, which mainly comprises a water distribution tank, a water inlet pipe, a water outlet pipe, a return pipe, an aeration pipe, a filter material, a filter plate, a baffle plate, a membrane assembly, an overflow port and a tank body, and is characterized in that the baffle plate is arranged in the middle of the tank body to divide the tank body into a filler area and a reaction area; the filter plate is arranged at the bottom of the filler area, two layers of fillers are arranged on the upper layer of the filter plate, the lower layer of the filter plate is quartz sand with the particle size of 0.5-2mm, and the upper layer of the filter plate is an AFM active filter material; and the membrane component is arranged in the reaction area and adopts a silicon carbide flat membrane with the filtering precision of 0.1-2 microns. Aiming at the defects of an original sewage treatment device, the invention provides a sewage treatment filter device which is good in treatment effect and low in operation energy consumption, can be used for water pretreatment of a micro-polluted water source and can also be used for advanced treatment of sewage.

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 discloses a biological filter and a method for treating VOCs and malodorous gas.The biological filter comprises a second spraying cavity which is sequentially provided with a second water storage pond, a second gas distribution layer, a second filler layer and a second spraying layer from bottom to top, and the second filler layer is sequentially provided with a first movable strain biofilm culturing filler layer, a second movable strain biofilm culturing filler layer and a third movable strain biofilm culturing filler layer from top to bottom; and a plurality of stirring devices are arranged in the first movable strain biofilm culturing filler layer and the second movable strain biofilm culturing filler layer. According to the method, VOCs and malodorous gas are treated by using a biological filter. The biological filter disclosed by the invention has the advantages of high filler utilization rate, stable operation, low energy consumption, low operation cost, high treatment efficiency, good purification effect, long service life and the like, and can be widely applied to treatment of VOCs (Volatile Organic Compounds) and malodorous gases with different components in industrial factories, sewage treatment, food processing industries, garbage clearance and other scenes; vOCs and malodorous gas in waste gas can be effectively removed, and the air environment of polluted factories and living quarters can be improved.

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 relates to the technical field of biological filters, in particular to a stainless steel biological filter structure which comprises a stainless steel tank body, a supporting layer and a water distribution pipe, the stainless steel tank body is of a rectangular shell structure; the water distribution pipe and the aeration pipe are respectively arranged below the supporting layer; the sludge guide plates are symmetrically welded and fixed on two sides of the bottom of the stainless steel tank body; the motor is fixed in the middle of the supporting plate through a screw, the stirring shaft is fixed on a rotating shaft of the motor to form a rotating device, and the stirring shaft is arranged in the biological filler; the cleaning pipes are symmetrically arranged on the two sides of the lower portion of the supporting plate, and the spray heads are arranged on the outer walls of the cleaning pipes and obliquely face the two sides. By improving the structure of the stainless steel biological filter tank, the stainless steel biological filter tank has the advantages that the biological filler is turned over in the stainless steel tank body, the cleaning efficiency is improved, and the biological filler cleaning effect is good, so that the problems and defects in the prior art and equipment are effectively solved.

The invention belongs to the technical field of biological filters, and relates to an anaerobic denitrification reactor and a method for accelerating degradation of nitrate nitrogen in micro-polluted water, and the reactor mainly comprises a biological filter, a water inlet tank, a peristaltic pump and a water outlet tank. The biological filter is composed of a filler composed of a modified polyvinylidene fluoride hollow fiber membrane and a high-temperature treatment iron wire, and the wastewater treatment process of the biological filter comprises a biofilm culturing stage and a domestication stage. In the biofilm culturing stage, the activated sludge enters the biofilter along with inlet water, and is loaded on the surface of membrane filaments to form a layer of biofilm; in the domestication stage, the wastewater slowly enters a biological filter and stays in a reactor, iron and nitrate nitrogen in the wastewater are subjected to denitrification reaction under the action of denitrifying bacteria, and the purpose of rapidly removing the nitrate nitrogen is achieved. According to the method, nitrate nitrogen in the wastewater can be rapidly reduced under the condition of not additionally adding a carbon source, so that the treatment process is low-carbon, aeration is not needed, energy is saved, and the method is suitable for industrial popularization.

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 utility model discloses a hog house efficient deodorization device for Xuanhe pig breeding, which comprises an exhaust fan arranged on the upper portion of a hog house wall body, a protective cover arranged on the outer side of the wall body, a treatment box connected with the bottom of the protective cover through a gas guide pipe, a partition plate arranged inside the treatment box, a communicating pipe arranged on the partition plate, and a medicament barrel and a biological filter arranged on two sides of the partition plate respectively. An adsorption tank is mounted between the communicating pipe and the biological filter; a liquid storage barrel is placed above the hog house, two mounting plates are mounted on the inner top surface of the hog house, a spray pipe is rotatably mounted on the two mounting plates in a penetrating manner, a plurality of nozzles are fixedly connected to the spray pipe, a water pump is connected to the bottom of the side surface of the liquid storage barrel, the output end of the water pump is connected to the spray pipe through a liquid guide pipe, and a driving assembly for driving the spray pipe to rotate is further mounted on the inner top surface of the hog house. According to the hog house odor treatment device, odor in gas can be effectively removed through three times of treatment, the exhausted gas is prevented from influencing the surrounding environment, meanwhile, generation of odor in a hog house can be effectively reduced, and treatment on the odor source is achieved.

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 discloses a sewage staged treatment and recycling system based on multistage regulation and storage and intelligent monitoring. The sewage staged treatment and recycling system is characterized by comprising a regulation tank, a lifting pump, a multistage anaerobic biological filter, a multistage drop weir, a soil infiltration bed, a biological deodorization facility, an intelligent monitoring assembly, a console assembly, a multistage recycling assembly and the like. Rural domestic sewage is treated through the multi-stage anaerobic biological filter, the multi-stage drop weir and the soil infiltration bed, odor generated by anaerobic fermentation is purified through the biological deodorization facility, and the fecal coliform soft measurement value of effluent in each process link is monitored in real time through the intelligent monitoring assembly. And in cooperation with the console assembly and the multi-stage recycling assembly, the recycled water in different treatment stages is recycled to different irrigation objects, so that stage treatment and stage utilization of the sewage are realized.

The invention discloses a high-efficiency intelligent backwashing system for an upward flow biofilter. The invention can completely solve the problems of the existing upward flow biofilter, such as the excessive backwashing intensity affecting the removal efficiency of pollutants, the frequent backwashing of the filter due to insufficient backwashing intensity or too short backwashing time, and even the problems of the biofilter material being compacted and the filter plate flipping due to insufficient backwashing. The invention can completely solve the impact of the existing upward flow biofilter on the front-end pretreatment unit and the additional increase in operating costs caused by the frequent backwashing of the upward flow biofilter. The high-efficiency intelligent backwashing system can realize early warning, reduce the uncertain factors of human intervention, and strangle the overall compaction of the filter in advance, thereby ensuring the normal operation of the filter. The invention has great promotion and application value in the field of upward flow biofilter technology.

The present invention relates to a method and device for killing hydroxyl radicals of parasites in factory-farmed animals. The device is provided with a hydroxyl radical (·OH) solution generating device, a ·OH solution spraying microjet device, a mixing tank, a seawater culture pool, a microfilter / protein separator / biofilter, a sand filter-water reservoir, a real-time online detection system and an intelligent control center. Oxygen active particles efficiently generate ·OH solution through a gas-liquid mixer and a mixing tank, and the ·OH solution water pipe sprays the ·OH solution and cavitation bubbles to the ·OH solution treatment culture pool through a star-shaped ·OH solution microjet spray device, synchronously or intermittently achieving 100% killing of cultured animal parasites and other pathogenic microorganisms in multiple culture pools, and mineralizing organic matter in the culture pool and oxidizing inorganic nitrogen. The method is automated, efficient, green and safe, does not generate disinfection byproducts, purifies culture water, and ensures the growth and health of cultured animals and the safety of marine ecology.

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.