233 results about "Biological decontamination" patented technology

The invention discloses a waste gas treatment device for adhesive tape production, and particularly relates to the technical field of adhesive tape production waste gas treatment.The waste gas treatment device comprises a main body, a rotating assembly is arranged in the main body, a filtering assembly is arranged on the outer surface of the rotating assembly, and a spraying assembly is arranged on the upper side of the filtering assembly; and three biological purification assemblies are arranged on the upper side of the spraying assembly. According to the waste gas treatment device for adhesive tape production, in the waste gas treatment process of adhesive tape production, the rotating assembly penetrates through the filtering assembly, the spraying assembly, the biological purification assembly, the scraping assembly, the oxygen injection assembly and other structures, and automatic dust removal through the filtering assembly in the particulate matter filtering step is achieved; the adhesive tape production waste gas treatment device ensures full contact of adhesive tape production waste gas and spraying liquid, achieves cleaning and oxygen supply of the biological purification assembly by utilizing the scraping assembly and the oxygen injection assembly, forms a complete adhesive tape production waste gas treatment chain, and realizes efficient treatment of waste gas.

The invention discloses a digital intelligent regulation and control system for a sewage treatment facility, which belongs to the technical field of sewage treatment and comprises a regulation tank, a sewage treatment facility, a control system and a control system, and is characterized in that the regulation tank is used for pumping sewage into the sewage treatment facility; the sewage treatment equipment is used for treating sewage; the monitoring module is used for acquiring related parameter information related to sewage; the analysis module is used for carrying out analysis according to the related parameter information and respectively generating a liquid level value, an aeration duration value and a medicament feeding value; the evaluation module is used for carrying out abnormity evaluation according to the liquid level value, the aeration duration value and the medicament putting value and generating an adjusting instruction; and the execution module is used for executing the generated various adjusting instructions. According to the invention, the pollutant concentration of each process module of the sewage treatment equipment is predicted through the medicament putting evaluation unit, and the medicament putting amount of each process module is adaptively adjusted according to the pollutant concentration and the pollutant concentration of the effluent quality, so that the biological purification effect can be improved, and excessive putting of biological medicaments can be avoided.

The utility model discloses a freshwater pond culture tail water treatment system which comprises ecological ditches arranged among culture ponds, and a sedimentation tank, a filter dam I, an aeration tank, a filter dam II and an ecological purification tank which are sequentially connected with one side of each ecological ditch, tail water is primarily purified through the ecological ditch, suspended solids and other substances in the water body are precipitated through the sedimentation tank, the suspended solids in the water are further removed through the first filter dam and the second filter dam, aeration equipment in the aeration tank is used for increasing dissolved oxygen in the water body and accelerating decomposition of organic matter in the water body, and nitrogen and phosphorus nutritive salt in the water body is absorbed through the ecological purification tank. The freshwater pond culture tail water treatment system is simple in structure, reasonable in design, reasonable in layout, high in tail water treatment efficiency and good in treatment effect, the area of the freshwater pond culture tail water treatment system accounts for more than 10% of the total aquaculture area, new technologies and new processes such as physical and biological purification treatment are applied to the whole system, construction of a pond circulation treatment system is accelerated, and the cost is reduced. The aquaculture tail water resource utilization or up-to-standard discharge is promoted, and the healthy and green development of the aquaculture industry is promoted.

The invention relates to the technical field of ultrapure water preparation, and particularly discloses ultrapure water preparation equipment with a biological pretreatment filter and a process thereof.The ultrapure water preparation equipment comprises a base, a frame is fixedly mounted at the top of the base, an ultrapure water preparation device is mounted in the frame, a biological purifier is mounted on one side of the ultrapure water preparation device, and the biological purifier is mounted on the other side of the ultrapure water preparation device; a driving mechanism, a cleaning mechanism and a water guide mechanism are arranged for cooperative operation, powerful assistance is provided for ultrapure water preparation, and a second motor is started; the rotating shaft is driven to rotate through the linkage of the synchronous wheel and the synchronous belt, so that the auger and the cleaning arm work in the activated carbon adsorption barrel, the cleaning arm cleans the inner wall to prevent blockage, the auger promotes water to surge, and the purification efficiency is improved; filtered water is rapidly dredged to enter a subsequent treatment unit, so that efficient and smooth preparation of ultrapure water is realized, and the production efficiency is further improved.

The utility model discloses a multi-channel efficient biological waste gas purification device and relates to the technical field of waste gas treatment. The device comprises a treatment tank assembly, a sealing tank cover is arranged on the top surface of the treatment tank assembly, and the treatment tank assembly and the sealing tank cover are fixedly mounted through bolts. A large number of adsorption surfaces can be provided through a biological activated carbon porous structure, harmful substances in waste gas can be adsorbed, biological activated carbon further has certain catalytic performance, decomposition and conversion of some harmful substances in the waste gas can be promoted, the biological activated carbon is contained through the purification channel, and the purification effect is good. Saturated biological activated carbon can be conveniently replaced, waste gas in the treatment tank assembly can be conveniently subjected to multi-channel filtration through the multiple sets of purification channels, the waste gas can make full contact with the biological activated carbon, purification treatment can still be conducted after the biological activated carbon in one set of purification channels is saturated, and the purification efficiency is improved.

The invention relates to the technical field of sewage treatment, in particular to a domestic sewage treatment system which comprises an impurity removal box and a second water pipe, a disinfection barrel is integrally formed on the right side of the impurity removal box, a water pump is fixedly installed at the bottom of the inner side of the disinfection barrel, and one side of the disinfection barrel communicates with a first water pipe. A biological purification box is fixedly connected to the end, away from the disinfection cylinder, of the first water pipe, the front side of the biological purification box communicates with an ultrafiltration cylinder through a second water pipe, and a drainage pipe is fixedly connected to one side of the ultrafiltration cylinder; and a mounting frame is fixedly connected between the inner walls of the impurity removal box. According to the improved sewage treatment system, impurities in sewage are removed through the impurity removal box, then the sewage is disinfected and precipitated through the disinfection cylinder, the impurity removal box provides power for a stirring part of the disinfection cylinder when working, meanwhile, the sewage enters the disinfection cylinder to trigger a buoyancy air bag to automatically add disinfection powder into the disinfection cylinder, and the disinfection powder is matched with rotation of the main shaft; the powder is automatically and uniformly thrown into the sewage.

The invention provides a water quality purification system and method for an ecological wetland, and relates to the technical field of ecological wetlands, and the water quality purification system comprises a pretreatment module which is used for preliminarily filtering and separating large-particle suspended matters, floating matters and part of organic matters flowing into a water body; through the arrangement of the multi-stage biological purification module, a water body is sequentially introduced into the multi-stage treatment unit comprising the pretreatment module, the multi-stage biological purification module, the multiple oxidation module and the ecological restoration module, staged efficient removal of nitrogen, phosphorus, heavy metals and organic pollutants is realized, and especially in the multi-stage biological purification module, the treatment efficiency is improved. Through the synergistic effect of the artificial floating bed filter tank, the gravel matrix filter tank and the plant-microorganism symbiotic filter tank, the decomposition, adsorption and removal capacities of pollutants are greatly improved, meanwhile, the water body retention time and flow state distribution are optimized, the short flow phenomenon is effectively avoided, and the adaptability and treatment efficiency of the system under the complex polluted water body condition are improved.

The invention relates to photosynthetic bacterium water quality purifying agent preparation equipment and a preparation system thereof, and relates to the technical field of microorganism water quality purification, the photosynthetic bacterium water quality purifying agent preparation equipment comprises a barrel, a cover plate is installed on the barrel, a filter screen is arranged on the cover plate, the filter screen is detachably arranged on the cover plate, and the filter screen is arranged in the barrel in a sliding mode after being detached; a driving mechanism is arranged between the barrel and the filter screen and comprises a supporting block, a driving electric cylinder and an organ plate, a sliding groove penetrating through the side wall of the barrel is formed in the barrel, the supporting block is arranged in the sliding groove in a sliding mode, and the supporting block abuts against the end, away from the cover plate, of the filter screen; the driving electric cylinder is installed in the sliding groove and drives the supporting block to slide in the sliding groove, the organ plate is arranged in the sliding groove in a folded mode, one end of the organ plate is fixedly arranged at the bottom of the sliding groove, the other end of the organ plate is fixedly arranged on the supporting block, and the supporting block slides to drive the organ plate to be stretched and folded in the sliding groove. The effect of improving the production efficiency of the photosynthetic bacterium water quality purifying agent is achieved.

In order to solve the problems of unstable humidity and poor sterilization effect in the prior art, the invention provides a cell incubator and a humidity control method, the cell incubator comprises an incubator inner cavity, an outer door and a sealing structure, the incubator inner cavity is provided with a biological decontamination system, the biological decontamination system comprises an active humidification system and an airflow residue removal system, and the active humidification system is connected with the airflow residue removal system. The active humidifying system comprises a sterilizing agent input port, a water input port and an evaporator for evaporating a sterilizing agent and water, and the evaporator is mounted on the inner wall of the inner cavity of the incubator through an evaporator mounting seat. By means of the efficient sterilization function and the stable sealing structure, the sterile state of the inner cavity can be kept, the purity of the experimental environment is ensured, in addition, the humidifying device further has the capacity of accurately controlling the humidifying amount, humidity control is effectively stabilized, and more ideal experimental conditions are provided.

The utility model discloses a rural resident domestic sewage recycling treatment device, which relates to the field of sewage treatment and comprises a septic tank, a hydrolytic acidification tank, an oil separation well, an anaerobic purification tank and an ecological digestion tank. According to the treatment mode of the utility model, the treatment of sewage generated by domestic kitchen, washing, cleaning and bathing sewage is added, the combination of resource utilization and an agricultural production structure is preferentially considered, and the treatment technologies of hydrolytic acidification, anaerobic purification, multi-medium biological purification, small vegetable garden / small garden ecological digestion pool and the like are adopted; rural domestic sewage treatment is combined with rural courtyard economy and agricultural green development, and rural domestic sewage resource utilization is achieved nearby on site.

The utility model relates to the field of sewage treatment equipment, and particularly provides a rural sewage treatment device which comprises an outer ring, an inner cylinder mechanism is arranged on the inner side of the outer ring, the inner cylinder mechanism comprises a first inner cylinder and a second inner cylinder, and a gas-liquid conveying pipe is arranged between the first inner cylinder and the second inner cylinder. By means of the inner cylinder mechanism, various environmental indexes such as pH value, temperature and dissolved oxygen required by growth of microorganisms are finely controlled in the inner cylinder, efficient propagation of the microorganisms is achieved, and therefore the biological purification efficiency of sewage treatment is improved, and meanwhile, the biological purification efficiency of sewage treatment is improved. The device is combined with a traditional sewage treatment method, harmful substances in sewage are further removed, and due to the structural form that internal propagation and external treatment are combined, the efficient and comprehensive purification effect of the sewage is achieved.

The invention relates to the technical field of sewage treatment, in particular to a phycomycete co-culture sewage treatment device which comprises a residue filtering box and a water inlet pipe. The biological purification unit is arranged on the outer side of the bottom end of the filter residue box and is connected with the filter residue box; the re-filtering box is arranged on the outer side of the bottom end of the biological purification unit, one end of the re-filtering box is connected with the biological purification unit, the side wall of the other end of the re-filtering box is fixedly connected with a liquid discharging pipe, and the inner side of the re-filtering box is fixedly connected with a fine filtering frame; the synchronous cleaning unit is propped against the fine filter frame and the impurity filter frame and is connected with the biological purification unit; wherein the biological purification unit comprises a phycomycete maintaining assembly, a phycomycete symbiotic assembly, a multi-element cooperative drive control assembly and an automatic pouring assembly, by arranging the biological purification unit, a good environment can be provided for phycomycete cultivation, so that the phycomycete can effectively purify sewage, multiple stirring of the sewage can be achieved in the purification process, and the sewage purification efficiency is improved. The purification efficiency is greatly improved.

The invention discloses stenotrophomonas maltophilia CJY with hydroxybenzophenone degradation capacity and application of the stenotrophomonas maltophilia CJY. The stenotrophomonas maltophilia CJY is taken from sludge of a sewage plant and has an efficient degradation effect on hydroxybenzophenone; pollutants can be completely converted into harmless substances such as CO2 and H2O, so that the method has a wide application prospect in biological purification of industrial waste gas and wastewater. According to the stenotrophomonas maltophilia CJY disclosed by the invention, the removal rate of 50 mg / L of hydroxybenzophenone in an environment with the pH value of 7 can reach 50%, and the removal rate of hydroxybenzophenone within 125 mg / L can reach 30%.

A multi-layered bio purifier includes a plurality of layers. Each layer may include a membrane having a first side and a second side opposite the first side, a first channel formed on the first side, and a second channel formed on the second side. Further, each layer may include a first type of cells formed on the first side in the first channel and a second type of cells formed on the second side in the second channel. The multi-layered bio purifier includes a first manifold assembly to split incoming blood into the first channel and the second channel of the plurality of layers and a second manifold assembly to combine processed blood from the first channel and the second channel of the plurality of layers. The processed blood may include detoxified or purified blood.

The application provides a composite microbial agent, application of the composite microbial agent and a treatment method of high-concentration organic wastewater. The active component of the composite microbial agent provided in the first aspect of the application comprises two or three of Paecilomyces varioti MM2 strain, Aspergillus fumigatus MM6 strain, Candida rugosa MJ4 strain and Bacillus licheniformis MX8 strain. The composite microbial agent provided in the first aspect of the application can be used for biological decontamination treatment of high-concentration organic wastewater, so as to realize degradation of organic pollutants in the high-concentration organic wastewater and pH value adjustment, thereby avoiding increase of the load of a municipal sewage treatment system.

An EBDLR system includes a multi-layered bio purifier having a plurality of layers. Each layer includes a membrane, a first type of cells on a first side of the membrane in a first channel, and a second type of cells on a second side of the membrane in a second channel. The EBDLR includes a plasma separator to receive blood from a subject and separate a plasma component from the blood, a first reservoir to collect the plasma component, and a second pump to move the plasma component from the first reservoir to the multi-layered bio purifier. The multi-layered bio purifier distributes the plasma component into the first and second channels of each layer to purify the plasma component. The EBDLR includes a second reservoir to collect the purified plasma component and a third pump to infuse the purified plasma component from the second reservoir into the subject.

The invention belongs to the technical field of decontamination, and particularly discloses a sea cucumber artificial culture biological decontamination device which comprises a culture pond, side tables are fixedly installed on the two sides of the top of the culture pond, L-shaped moving tables are movably installed above the two side tables, and through grooves are formed in the surfaces of the ends, located in the culture pond, of the L-shaped moving tables. A through groove is formed in the top of the culture pond, a swing mechanism is installed in the through groove, extrusion mechanisms are installed at the four end corners of the top of the culture pond, a reset mechanism is arranged at the top of the swing mechanism, and a material pushing plate is movably arranged in the culture pond. The L-shaped moving table and the material pushing plate horizontally move in the culture pond, the material pushing plate can push impurities floating on the water surface of culture water to the end of the culture pond, workers can conveniently clean the impurities on the water surface, under cooperation of the extrusion mechanism and the swing mechanism, the material pushing plate can incline, the impurities on the water surface of the culture water can be lifted up, and therefore the impurities on the water surface of the culture water can be removed. And the cleaning of the impurities by workers is further facilitated.

The invention relates to the technical field of VOCs waste gas purification treatment of oil and gas field produced water, in particular to a treatment device for VOCs waste gas discharged from oil and gas field produced water and a waste gas treatment method of the treatment device. An ultraviolet photolysis and power device is communicated with a VOCs waste gas input pipeline, and a pressurized waste gas output pipeline is communicated between the ultraviolet photolysis and power device and a biological purification trickling filter device; a circulating liquid input pipeline is communicated between the biological purification trickling filter device and the ultraviolet photolysis and power device, a circulating liquid output pipeline is communicated between the ultraviolet photolysis and power device and the biological purification trickling filter device, and the biological purification trickling filter device is communicated with a purified standard waste gas discharge pipeline. An ultraviolet photolysis oxidation technology is used as a pretreatment process, and then purified standard waste gas is obtained through a biological treatment process. The VOCs waste gas in the produced water of the oil and gas field is treated by adopting a green and environment-friendly process technology, the process is simple, the treatment efficiency is high, and the VOCs treatment cost of an enterprise is reduced.

The invention relates to the technical field of purification devices, in particular to an ecological aquaculture sewage multi-stage biological purification device which comprises a foundation plate, a first-stage purification pond, a second-stage purification pond and a third-stage purification pond are fixedly arranged on the foundation plate, and multi-stage biological purification of sewage is achieved through the first-stage purification pond, the second-stage purification pond and the third-stage purification pond; the biological membrane bearing plates are respectively positioned in the first-stage purification tank, the second-stage purification tank and the third-stage purification tank and are used for forming biological membranes to realize biological purification of the sewage; when the biological membrane bearing plates are installed, the biological membrane bearing plates only need to be connected to the installation bearing blocks in a sleeving mode, then the hydraulic rod pieces are started, the multiple biological membrane bearing plates can be automatically fixed, manual fixing operation on the biological membrane bearing plates is not needed, the operation is very convenient and rapid, meanwhile, the biological membrane bearing plates can be driven to move into the corresponding purification ponds, and the working efficiency is improved. The mounting efficiency of the biological membrane bearing plate is improved to a great extent, and the working intensity of workers is relieved.

The utility model discloses an ecological purification system for a water intake of a riverway, which relates to the technical field of water ecological purification and particularly comprises a first soft enclosure, a second soft enclosure and a third soft enclosure, the first soft enclosure, the second soft enclosure and the third soft enclosure are sequentially arranged and are all in a similar arc shape, the first soft enclosure is arranged on an upstream face, and the second soft enclosure is arranged on a downstream face. The second soft enclosure is arranged on the inner side of the water intake; a filtering area is formed between the first soft enclosure and the second soft enclosure, a filtering assembly is arranged in the filtering area, a floating island area is formed between the second soft enclosure and the third soft enclosure, aquatic plants and first filler are arranged in the floating island area, and the first filler is arranged below the aquatic plants. According to the ecological purification system for the riverway water intake, the three soft enclosures are designed, the filtering area and the floating island area are formed, functional distinguishing is achieved, water at the water intake is purified in the modes of physical filtering, biological purification and ecological buffering, the water quality of the water intake is remarkably improved, and burden is relieved for subsequent water treatment.

A portable decontamination chamber including an outer container defining a first internal volume; an interior receptacle positioned within the first internal volume and defining a second internal volume that is configured to receive an item to be decontaminated; an insulating liner configured to be positioned within the first internal volume between an interior surface of the outer container and an exterior surface of the interior receptacle; a thermite compact configured to be positioned within the first internal volume and in contact with at least a portion of the exterior surface of the interior receptacle; and an initiator configured to ignite the thermite compact to induce a biological decontamination temperature within the second internal volume in order to thoroughly and rapidly decontaminate material tainted with unwanted biological matter in a readily deployable package without the generation of additional gaseous products that increase the pressure within the decontamination chamber.

The embodiment of the application provides a biological deodorization and demisting device, a filler preparation method and application in mixed waste gas treatment, and belongs to the technical field of biological purification and waste gas treatment. The device comprises: a pretreatment unit comprising a gas distributor and a spraying humidifier arranged together; a biological reaction unit for biodegradation of waste gas discharged from the pretreatment unit, which comprises at least one layer of composite filler layer, and catalyst is loaded in the layer height direction by layered spraying, and composite bacteria are loaded on the layer surface; a demisting unit comprising a demister and a separator for hierarchical and collaborative removal of mist droplets; and a control unit for real-time monitoring and adjustment of temperature, humidity, pH value, bacteria activity and pollutant concentration. The application realizes efficient and collaborative purification of H2S, NH3, VOCs and oil mist droplets in mixed waste gas, improves biological activity in the filler and prolongs the replacement cycle.

The invention relates to a method for the bio-decontamination of an aqueous solution held in a tank on board a motor vehicle having a combustion engine. According to the invention, this method comprises the following steps: • Obtaining information encoded in a navigation system or GPS system, said information comprising at least a first journey time, tr1; • If the first journey time, tr1, is greater than a first time value, t1, triggering the heating of the aqueous solution held in the holding tank in order to reach a first temperature of the aqueous solution, T1, at least equal to 60°C for a second time value, t2, • Keeping the aqueous solution at at least said first temperature of the aqueous solution, T1, for a third time value, t3.

The invention relates to the technical field of wastewater multi-stage treatment and recycling, and particularly discloses a polyester fabric dyeing and finishing wastewater treatment and recovery device which comprises a regulating tank, a primary sedimentation tank, a microbial flocculation reaction tank, a secondary sedimentation tank and a clarification tank which are sequentially arranged, flocculation receiving nets are movably arranged in the primary sedimentation tank, the microbial flocculation reaction tank and the secondary sedimentation tank, and lifting mechanisms matched with the three flocculation receiving nets are mounted on the front sides of the primary sedimentation tank, the microbial flocculation reaction tank and the secondary sedimentation tank. Secondary sedimentation removal of pollutants is achieved through the primary sedimentation tank and the secondary sedimentation tank, a biological purification mode is introduced through the microbial flocculation reaction tank and combined with traditional physical and chemical modes, and ozone is introduced through the clarification tank for oxidation disinfection treatment, so that the advantages of various treatment methods are brought into full play, and the treatment effect is good. And pollutants can be removed to the greatest extent.

The present application relates to wastewater multistage treatment recycling technical field, specifically disclose a kind of polyester fabric dyeing and finishing wastewater treatment recovery device, including the adjustment pool, primary settling tank, microbial flocculation reaction tank, secondary settling tank, clarifying tank that are sequentially arranged, the coarse grating filter screen is installed in the adjustment pool, the condensation flocculation net is movably arranged in the primary settling tank, microbial flocculation reaction tank and secondary settling tank, the lifting mechanism matched with three condensation flocculation nets is installed in the primary settling tank, microbial flocculation reaction tank and secondary settling tank front side.The present application realizes the secondary settlement removal of pollutant by primary settling tank, secondary settling tank, introduces biological purification mode by microbial flocculation reaction tank, combines with traditional physical, chemical method, introduces ozone and carries out oxidation disinfection treatment by clarifying tank, to fully exert the long of various processing methods, so that pollutant is removed to the greatest extent.

The present invention relates to an in-situ biological purification system and method for treating eutrophic water bodies. The purification system comprises several biological purification modules installed in-situ within the water body. Each biological purification module includes a passive protection unit and an active protection unit. The passive protection unit comprises a plurality of fixed fish-repelling isolation devices, which together form a zooplankton protection zone within the water body. The active protection unit comprises a mobile, pursuit-type active fish-repelling device. Advantageously, the in-situ biological purification system continuously repels fish through fish-repelling signals such as bubbles, sound, and light, thereby forming an in-situ zooplankton protection zone in a specific area of the water body. This system fully utilizes the natural water surface to create a protective habitat for zooplankton, reduces predation intensity, increases zooplankton survival rate, biomass, and the proportion of large individuals, and replenishes zooplankton biomass throughout the lake or reservoir, thereby rapidly depleting algae in-situ and achieving the ultimate goal of water pollution control and the protection and restoration of the aquatic ecological environment.

The invention relates to a microbial agent for removing refractory COD (Chemical Oxygen Demand) in wastewater and application of the microbial agent, and belongs to the technical field of biological purification. The invention provides a microbial agent for removing refractory COD (Chemical Oxygen Demand) in wastewater. The microbial agent is prepared from two or more of geomonas, rope warming bacteria, nitro-spirillum, thiobacillus, urea bacillus, leptospirillum, piriformospora, floating fungi, nitro-spina bacteria, thauera and hyphomicrobe. The microbial agent can remove part of refractory COD (Chemical Oxygen Demand) by utilizing the synergistic effect and co-metabolism of biocenosis, and has a great application prospect in the treatment of wastewater (such as landfill leachate and the like) containing a large amount of refractory COD.

The invention discloses landscape sewage pretreatment equipment, and relates to the field of sewage treatment.The landscape sewage pretreatment equipment comprises an upper box body and a lower box body, the upper box body is connected to the upper portion of the lower box body, a water inlet pipe and a water outlet pipe are fixedly connected to the side face of the upper box body, and a surrounding plate is fixedly connected to the interior of the upper box body and divides the inner space of the upper box body into a primary filtering cavity and a water return cavity; the water inlet pipe is communicated with the primary filter cavity, the water outlet pipe is communicated with the water return cavity, a filter screen is arranged at the bottom of the primary filter cavity, and sewage entering the primary filter cavity enters the lower box body through the filter screen. Sewage is filtered by the filter screen, purified and decomposed by microorganisms and filtered by the filter element in sequence after being introduced into the upper box body, the sewage is fully purified through three-stage treatment, the filter screen can preliminarily filter large impurities, the microorganisms can purify and decompose organic matters, and the filter element can filter out fine solid impurities; meanwhile, equipment does not need to be shut down when the filter element needs to be replaced in the whole filtering process, normal operation of equipment such as a landscape fountain is guaranteed, and the using effect is good.

The utility model discloses a water purification device for prawn culture, which comprises a sediment filter tank, a biological purification tank, an adsorption tank and a disinfection tank, the top of the left end of the sediment filter tank is communicated with the bottom of a water inlet pipeline, a first control valve is arranged at the joint of the water inlet pipeline and the sediment filter tank, and the water inlet end of the water inlet pipeline is connected with a culture pond water outlet pipe; a first filter screen and a second filter screen are arranged in the sediment filter box, the first filter screen is located on the left side of the second filter screen, the right end of the sediment filter box is communicated with the left end of the biological purification box through a communication pipeline, a valve is installed on the communication pipeline, and a cleaning water inlet pipe used during cleaning is arranged at the right end of the sediment filter box. The device realizes graded filtration of solid impurities with different particle sizes in the aquaculture water, can efficiently intercept various solid pollutants such as residual feeds and shrimp shells, effectively reduces the content of suspended solids in the water, and reduces the burden for the subsequent purification link.

The application discloses a hydrophilic round square membrane bed biological purification system and method, which comprises an aerobic main body reaction unit, one end of the aerobic main body reaction unit is provided with a unit inlet overflow pipe part, and the other end is provided with a unit outlet overflow pipe part, a water passing arc wall part is arranged in the aerobic main body reaction unit, the water passing arc wall part comprises a front area mixed medicine arc wall part, a interception and filtration purification arc wall part and a rear area mixed medicine arc wall part, a water round square membrane bed part is arranged between the front area mixed medicine arc wall part and the interception and filtration purification arc wall part, an air inlet of the water round square membrane bed part is connected with an aeration oxygen supply part, and air inlets of the front area mixed medicine arc wall part and the rear area mixed medicine arc wall part are connected with front and rear arranged medicine adding parts; the application can efficiently and quickly and with energy saving and low consumption deal with organic or inorganic pollutants with normal chain functional groups which are carried in water.