57 results about "Bio filtration" patented technology

The application relates to the technical field of garden engineering, and discloses a garden rainwater collection and purification treatment device based on multistage filtration, which comprises a support, a purification tank is fixedly connected to the top of the support, a biological filtration assembly for biodegradation and purification of rainwater is further arranged in the purification tank, and a sedimentation tank for rainwater collection is further arranged at the top of the purification tank. Compressed air is released into the cylinder through the aeration disc, the closed structure of the cylinder restricts the bubbles from diffusing in disorder, the screw thread flow guide groove in the cylinder guides the bubbles to spiral upward, the rising bubble flow impacts the broken paddle at the bottom of the shaft support to rotate, the large bubbles are broken into micro-bubbles through shearing to increase the specific surface area, the bubbles are efficiently utilized, the problem that the bubbles and the water body are not fully contacted and the dissolved oxygen is insufficient is solved, and the water quality requirement of the garden water is met.

The invention relates to the technical field of garden engineering, and discloses a garden rainwater collection and purification treatment device based on multi-stage filtration, the garden rainwater collection and purification treatment device based on multi-stage filtration comprises a support, and the top of the support is fixedly connected with a purification box; a biological filtering assembly used for biodegrading and purifying rainwater is further arranged in the purifying box, and a settling box used for collecting the rainwater is further arranged on the top of the purifying box. Compressed air is released by the aeration disc and then enters the cylinder body, a closed structure restrains bubbles to avoid disordered diffusion, a threaded flow guide groove in the cylinder body guides the bubbles to spirally rise, rising bubble flow impacts crushing blades at the bottom of a shaft bracket to rotate, large bubbles are crushed into micro bubbles through the shearing action to increase the specific surface area, and efficient utilization of the bubbles is achieved. The problems of insufficient contact between bubbles and water and insufficient dissolved oxygen are solved, and the water quality requirement of garden water is met.

The pure membrane MBBR sewage treatment system comprises an anoxic denitrification zone, an anaerobic ammonia oxidation zone, an aerobic oxidation zone, a high-density sedimentation zone, an MBBR biological filtration zone, a backwashing water tank and an equipment room, the anoxic denitrification region is used for carrying out amination reaction, organic matter hydrolysis reaction and denitrification reaction on the sewage and nitrate and nitrite in the anoxic denitrification region; the anaerobic ammonia oxidation zone is used for reacting the sewage with nitrite to generate nitrogen; the aerobic oxidation zone is used for promoting microorganisms to degrade organic matters in sewage and convert ammonia nitrogen; the high-density settling zone is used for separating muddy water in sewage; the MBBR biological filtration area is used for filtering suspended matters in the sewage; the backwashing water tank is used for providing backwashing make-up water for the MBBR biological filtration area; and the equipment room is used for placing disinfection equipment, a fan and a power distribution control system.

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 application provides a biological filtration filler for VOCs and malodorous gas treatment and a preparation method, and belongs to the technical field of environmental treatment. The biological filtration filler is composed of organic fillers and inorganic fillers. The organic fillers include tree bark, compost or straw, and the inorganic fillers include zeolite, biological carbon, ceramic granules or shells. The mass ratio of the organic fillers to the inorganic fillers is (1-18):100. The application combines the characteristics of different component fillers and is optimized. A combined biological filtration filler is provided. The filler can provide reasonable environmental conditions for long-term stable growth of degrading bacteria, is beneficial to the proliferation of degrading bacteria on the surface of the filler and the formation of a biological membrane, and is also beneficial to the diffusion of gas on the surface of the biological membrane of the filler. The application overcomes the shortcomings of easy degradation, blockage of voids, large resistance, short gas flow and easy generation of anaerobic zones in local fillers when the organic fillers are used alone.

The invention provides a semi-automatic zero-water-change internal circulation incubation system, and relates to the technical field of data processing, and the semi-automatic zero-water-change internal circulation incubation system is characterized in that bottom accumulated dirt is sucked and verified by using a gap structure of a backflow sleeve and a limiting backflow pipe, the gap size and the height of the backflow pipe are optimized, and water flow dynamic parameters are obtained; the biofilter is used for biologically filtering and decomposing the water body of the spray culture pond and optimizing the opening parameters of the filter bag pipe according to the water flow dynamic parameters; monitoring a water body in real time through a biological filtration load dynamic adjustment method, and dynamically adjusting the operation power of a water pump to obtain a purified water body; the method is used for dynamically distributing the flow ratio of purified water to the roe incubator to return water to the spray cultivation pool on the basis of purified water and through a circulating water flow distribution intelligent regulation and control method based on the fry breeding density and the growth stage, and zero-water-change internal circulation is achieved. The fish roe turning incubation effect and the stability of the water fry cultivation process are effectively guaranteed.

The utility model relates to circulating water aquaculture filtration technical field discloses a kind of three-dimensional filter devices of circulating water aquaculture, including coarse filter box, the coarse filter box inside is provided with coarse filter screen, the coarse filter box side wall is provided with fine filter box, the fine filter box inside is provided with fine filter screen, the fine filter box side wall is provided with biological filter box, the biological filter box inside is provided with filler plate, the biological filter box side wall is provided with clean water tank, the coarse filter box side wall is provided with cleaning assembly, the biological filter box inside is provided with mounting assembly;The cleaning assembly includes cleaning plate, and the cleaning plate side wall is attached to the coarse filter screen side wall.In the utility model, the chain sprocket and chain transmission driven by motor are used to move the cleaning plate up and down along the coarse filter screen to scrape off impurities, so as to achieve the effect of automatic cleaning of filter screen and prevention of blockage. The above structure improves the automation maintenance efficiency of the filter device and reduces the labor operation cost.

The utility model discloses a kind of fry breeding box, by physical filtration area, biological filtration area, oxygen supply system and intelligent control system are integrated design, realize the efficient purification and recycling of aquaculture water body. Physical filtration area adopts the design of slanted bottom cooperation automatic sewage collection structure, biological filtration area is maintained water quality stability by nitrifying bacteria automatic addition and combined filter material, oxygen supply and disinfection module work together to guarantee oxygen safety, intelligent control system monitors environmental parameter in real time and executes protective control strategy, effectively solve the technical problems of traditional breeding box maintenance frequently, water quality fluctuation, fry survival rate is low, with the technical advantages of high filtration efficiency, convenient operation, water quality stable controllable.

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

The invention relates to an integrated water treatment filter for a recirculating aquaculture system and a filtering method, and belongs to the field of water treatment. The device comprises a biological filtration unit and a physical filtration unit, and is structurally characterized in that the physical filtration unit is located in the biological filtration unit, and the physical filtration unit is located at the upper end of the biological filtration unit; the physical filtering unit is located in the biological filtering unit, and the physical filtering unit is located at the upper end of the biological filtering unit; the physical filtering unit comprises a bead intercepting net, a filtering barrel, a back washing spraying device and floating bead filler, the bead intercepting net is arranged at the top of the filtering barrel, the back washing spraying device is located in the filtering barrel, the floating bead filler is arranged in the filtering barrel, and the back washing spraying device is located in the filtering barrel. The biological filtration unit comprises a barrel body, an aeration device and a high-specific-surface-area filler, the filtration barrel, the aeration device and the high-specific-surface-area filler are all located in the barrel body, and the aeration device is located at the bottom of the barrel body.

The invention discloses a pipeline type multi-stage biological deodorization device which comprises a bio-trickling filter structure section, a connecting device, a pre-wetting structure section and a fine treatment structure section, and the connecting height of the bio-trickling filter structure section and an odor output pipe can be adjusted through the bio-trickling filter structure section; the connecting device is arranged at the rear end of the top of the bio-trickling filter structure section; the pre-wetting structure section is arranged at the left moving end of the connecting device; the biological filtration fine treatment structure section is arranged at the right side moving end of the connecting device and can drive a center component in the top of the biological trickling filtration structure section to rotate and stir in a limiting manner, and the connecting device can drive the pre-wetting structure section and the biological filtration fine treatment structure section to synchronously expand and contract; the fillers in the left end and the right end of the top of the bio-trickling filter structure section are clamped and fixed; in conclusion, flexible adjustment, linkage and quick connection and disconnection of the structural sections are achieved through multiple assemblies, and the odor purification quality and the deodorization efficiency are high.

A liquid inlet is formed in a box body, a liquid inlet box is arranged in the box body, a first rectangular through hole is formed in the end, away from the liquid inlet, of the liquid inlet box, a fine filtering cover and a coarse filtering cover are arranged at the position, above the first rectangular through hole, of the liquid inlet box, the coarse filtering cover is arranged on the outer side of the fine filtering cover, and a filtering net is arranged in the fine filtering cover; a first drawer is arranged at the lower end of the liquid inlet box, a quartz sand filter material layer and a biological filter membrane layer are arranged in the first drawer, an ozone treatment box is arranged at the lower end of the first drawer, a second rectangular through hole is formed between the ozone treatment box and the first drawer, and a first liquid level sensor and a mixing and stirring shaft are arranged in the ozone treatment box; and the mixing and stirring shaft is provided with mixing and stirring blades which are connected and fixed through threads. The fine filter cover and the coarse filter cover in the liquid inlet box can remove large-particle impurities in liquid, and the filter screen further improves the filter precision; and the quartz sand filter material layer and the biological filter membrane layer can effectively adsorb and decompose organic matters.

The application discloses a pipeline type multi-stage biological deodorization device, which comprises a biological trickling filter structure section, a connecting device, a pre-wetting structure section and a fine treatment structure section. The biological trickling filter structure section can adjust the connecting height with an odor output pipe. The connecting device is arranged at the top rear end of the biological trickling filter structure section. The pre-wetting structure section is arranged at the left moving end of the connecting device. The biological filtration fine treatment structure section is arranged at the right moving end of the connecting device. The biological filtration fine treatment structure section can drive the central part in the top of the biological trickling filter structure section to limit rotation stirring. The connecting device can drive the pre-wetting structure section and the biological filtration fine treatment structure section to expand and contract synchronously, and clamp and fix the fillers in the left and right ends of the top of the biological trickling filter structure section. Through the multi-component structure, the flexible adjustment and linkage and the quick disconnection of the structure section are realized, and the quality and deodorization efficiency of the odor are efficiently purified.

This utility model discloses a fish tank top filter structure, including a water tank, filter devices arranged on both sides of the water tank, and a cover covering the filter devices. A water outlet is provided on one side of the bottom of the water tank. An air pump is installed inside the water tank, and filter media is provided at the bottom of the water tank. The filter devices include a box body with a first water inlet. A support boss is provided inside the box body, and a first filter box filled with activated carbon is placed on the upper part of the support boss. A second filter box filled with filter cotton is placed on the lower part of the support boss. Both the first and second filter boxes have perforations. Product advantages: This structure provides a complete physical, chemical, and biological three-in-one filtration system. Physical filtration is achieved by filter cotton, chemical filtration by activated carbon, and the filter media at the bottom of the water tank are mainly used for biological filtration. This multi-stage filtration can effectively remove impurities, odors, and harmful substances from the water, keeping the water quality clear and healthy.

The utility model discloses a kind of nutrient solution circulation and replenishing device of biological filtration device, it is related to biological filtration technical field.The utility model includes filter tower body, filter tower body is provided with filtering mechanism inside, one side of filter tower body is provided with circulating replenishing mechanism, the spray end of filtering mechanism is provided with circulating spray mechanism, one end of circulating spray mechanism is provided with reciprocating drive mechanism.The utility model is driven end by reciprocating drive mechanism Rotary motion, actively extrude the spray end of circulating spray mechanism, force its spray end inside the spray end of filtering mechanism Circulating sliding;In this process, the edge of hard spray end continuously scratches the mineral substance such as calcium and magnesium ion crystallization deposited on spray end surface;This mechanical scraping mechanism effectively solves the inherent defects of traditional spray system, actively scraping is from source to destroy the formation and solidification process of scale layer, guarantee the long-term stability of spray flow and the efficient operation of device.

The invention concerns a method and the related apparatuses for carrying out the treatment of gases / vapors and / or combustion flue gases containing pollutants such as NOx, SO2, CO, CO2, O3, CH, NH3, H2S, C2H6S, VOC, dioxins, and other elements (including heavy metal particulates PM10 and PM2.5 and PM1).

This invention relates to the field of biofiltration technology, specifically disclosing a negative pressure ultrafiltration centrifuge tube device, comprising a negative pressure base, a negative pressure hood, and an ultrafiltration support stacked sequentially from bottom to top. The ultrafiltration support has multiple placement holes arranged in a matrix, each holding an ultrafiltration centrifuge tube. The negative pressure base contains a base frame, which has multiple sets of elastic limiting structures corresponding to the placement holes. These elastic limiting structures hold a collection tube, and the ultrafiltration centrifuge tube is coaxially arranged with its corresponding collection tube, with at least a portion of the ultrafiltration centrifuge tube extending axially into the collection tube. This invention enables liquid filtration, concentration, cell separation, desalination, and other experiments using negative pressure, and has a wide range of applications. Compared with existing technologies, this invention has the advantages of shorter processing time and higher efficiency, and it does not cause damage or leakage to the ultrafiltration membrane, effectively preventing cell injury.

The invention discloses a clarification and separation system integrated with a biological filtration function and a treatment method of the clarification and separation system, and belongs to the technical field of sewage treatment. The system comprises a clarification separator body, a water distribution device and a water collection weir groove, the interior of the clarification separator body is sequentially divided into a sludge settling area, a diversion area, a biological filtration area, a clarification area and an ultrahigh area from bottom to top. The flow guide plate is used for guiding the flow of the mixed liquid, so that large-particle sludge is settled, fine sludge is guided to float upwards, and a sludge floc filtering layer with a certain thickness is naturally formed in the biological filtering area; a porous net-shaped structure formed by sludge flocs and extracellular polymeric substances (EPS) in the filter layer is used for permeating, intercepting, adsorbing and purifying rising water flow. The integrated treatment of precipitation separation and biological filtration is realized, an advanced treatment unit does not need to be additionally arranged, the SS (suspended solids) in the effluent is stable and less than or equal to 10mg / L, and the integrated treatment device has the advantages of small occupied area, low operation energy consumption, adaptability to high-sludge-concentration working conditions and the like.

The present application relates to a kind of grass carp circulating water aquaculture tail water comprehensive treatment system based on MABR and its use method, it relates to aquaculture water treatment technical field.Processing system is sequentially connected physical filtration unit, biological filtration unit, MABR processing unit, disinfection unit and reuse unit, air supply unit is separately arranged;Use method is to apply MABR technology to biological filtration unit after, before disinfection unit, utilize physical filtration unit to remove large particle impurities and part of suspended solids in water body, the microorganism attached to biological filter material in biological filter carries out biological degradation to organic matter, ammonia nitrogen and other pollutants in water body, the microorganism attached to MABR membrane in MABR processing unit carries out depth degradation to the pollutants in water body, again, to the water body after treatment ultraviolet disinfection is killed pathogenic microorganism, subsequent water body oxygenation recycling or discharge is discharged.The present application has integrated technology removal effect, good stability, save external carbon source and other advantages.

The present application relates to sewage treatment technical field, specifically to a kind of printing and dyeing sewage microbial integrated treatment system. The efficiency is low, and energy consumption is big to simply use physical method, chemical method and biological method to carry out treatment to dyeing wastewater. In view of the above problems, the present application provides a kind of microbial filter device, the structure and position design of inner cylinder and outer cylinder and horizontal partition plate, the design can significantly expand the area and type of microbial filler filling in limited space, obtain higher sewage treatment efficiency, the device has stronger processing capacity and purification effect to difficultly degradable organic matter printing and dyeing sewage.

The utility model discloses a trickling filter device with both carbon dioxide removal and biological filtration functions. The trickling filter device comprises a trickling filter cartridge, wherein a filter bed disc is fixedly arranged at the top end in the trickling filter cartridge; a connecting frame and an L-shaped frame plate are fixedly arranged on the filter bed disc, a connecting column is fixedly arranged in the middle of the top end of the filter bed disc, a sleeve shaft is rotationally arranged at the top end of the connecting column, and a first bevel gear is fixedly arranged on the outer wall of the sleeve shaft. Due to the fact that a first bevel gear arranged on the outer wall of a fixing shaft in a sleeving mode is meshed with a second bevel gear at one end of a rotating shaft, a lead screw is driven to rotate, and the lead screw is in threaded connection with a main frame plate, the water inlet pipe can transversely move along a connecting frame in the rotating process, water is rotationally distributed, and the service life of the water inlet pipe is prolonged. The whole filter bed disc can be dynamically covered in a spiral, fan-shaped or partitioned manner, so that the problems of water accumulation, dryness and the like in a local region are effectively avoided, and water can more uniformly permeate into the filter bed.

The application discloses a kind of nanometer microbial water body purifier, comprising: cartridge and aeration device;The top of the cartridge is provided with counterweight, for the cartridge is maintained below the liquid surface, the cartridge is provided with packing zone, the packing zone is filled with packing, the aeration device extends to cartridge, the bottom of the cartridge and the first distance reserved between river bottom.The application has biological filtration function in addition to basic aeration function, biological filtration is carried out to river by packing in packing zone, rotating change aeration position is carried out by the water flow sprayed, variable aeration position is realized, water flow disturbance of different temperature layers over water and underwater is also realized with water flow being continuously absorbed into the bottom of cartridge, and exchange of nutrients and oxygen of different water temperature layers is realized.Not only promote the decomposition of organic matter in water body and the growth of microorganism, but also improve the self-purification ability of water body.

The utility model discloses a transfer box for breeding of modestus septentrionalis, and particularly relates to the field of breeding of modestus septentrionalis, the transfer box comprises a transfer box body, an oxygenation pump is fixedly installed on the upper surface of the transfer box body, and the output end of the oxygenation pump is fixedly communicated with a communicating pipe; and the bottom end of the communicating pipe penetrates through the transfer box body and extends into the transfer box body, the bottom end of the communicating pipe fixedly communicates with an oxygenation exhaust pipe, and a water quality filtering assembly is arranged outside the transfer box body. According to the transfer box for culture of the modestus septentrionalis, through the arrangement of an oxygenation pump, a communicating pipe and an oxygenation exhaust pipe, an oxygenation system can be formed, oxygen can be continuously conveyed to the transfer box body, it is ensured that the dissolved oxygen amount of water in the transfer box body is sufficient, and through a circulating pump, an extraction pipe, a primary filter cartridge, a high-efficiency filter cartridge and a biological filter cartridge, a water quality filter assembly can be formed; the problem that water quality is deteriorated due to the fact that a traditional transfer box lacks effective filtering equipment is solved, and the health of fish bodies during transfer is guaranteed.

Aspects of the present invention relate to a wastewater treatment process (100) and a wastewater treatment plant (1) for treating wastewater. The wastewater treatment process (100) comprises receiving wastewater for treatment. The wastewater is supplied to a bioreactor (13) for performing biological filtration of the wastewater. The wastewater is discharged from the bioreactor (13) to a mechanical filter apparatus (15) disposed downstream of the bioreactor (13). The mechanical filter apparatus (15) comprises a static filter pack (75) for filtering solid waste suspended in the wastewater. The static filter pack (75) comprises a plurality of mechanical filter elements (71) each having one or more filter cells (73). The treated wastewater is discharged.

To provide a biological filtration device equipped with a mechanism for reducing excessive cleaning and insufficient cleaning, and a cleaning method thereof.SOLUTION: A biological filtration device includes a treatment tank, a biological filtration layer arranged inside the treatment tank, a water level sensor that acquires a water level of water to be treated inside the treatment tank, and a control unit that acquires an output of the water level sensor, in which the water level sensor obtains a first water level that is higher by a predetermined distance from a preset reference water level, and a second water level that is higher by a predetermined distance from the first water level, and the control unit measures a first time until the water to be treated reaches the first water level from the reference water level, and a second time until the water reaches the second water level from the first water level, based on the output of the water level sensor, and changes a cleaning pattern of the biological filtration layer depending on a result of comparing the first time and the second time.SELECTED DRAWING: Figure 4

The present application relates to biofiltration materials for filtering a fluid. More specifically, the present application relates to a biofilter material comprising consolidated organic material, and use of such biofilter material for wastewater treatment. Provided is a biofilter bloc for wastewater treatment comprising a porous consolidated assembly of at least 20% w / w of organic materials, and wherein the consolidated assembly shows a density of about 35 kg / m3 to about 275 kg / m3.

The invention discloses a fish tank circulating filtering system and a filtering method thereof. The filtering system comprises an externally-hung shell and a filtering unit arranged in the shell. The core is that the filter unit comprises a pretreatment bin which can be integrally detached from the shell, and a buffer bin which is arranged below the pretreatment bin and is provided with a drain outlet at the bottom. A sewage discharge hole is formed in the side wall of the pretreatment bin and is used for centrifugally separating and collecting large-particle impurities; and the surge bin is used for stabilizing the water flow and carrying out secondary sedimentation on escaped fine particles. Through collaborative design of the detachable pretreatment bin and the bottom sewage discharge buffer bin, two-stage collection and convenient cleaning of sewage are achieved, and maintenance operation is greatly simplified. Meanwhile, a unique radial filtering flow channel is adopted in the system, so that the physical filtering efficiency and the biological filtering efficiency are effectively improved. The system thoroughly solves the problems that a traditional filtering system is tedious in maintenance and filter materials are prone to being blocked, efficient purification is guaranteed, and meanwhile excellent user experience is provided.

The utility model provides a kind of based on ecological breeding tank of simulation of Lophius litulon habit, it is related to Lophius litulon breeding field, including ecological simulation breeding tank, the inside of ecological simulation breeding tank is equipped with water flow simulation scraper, the outside of ecological simulation breeding tank is equipped with driving element, the outside of ecological simulation breeding tank is equipped with biological filter box, the outside of ecological simulation breeding tank is equipped with water delivery assembly, the external surface of ecological simulation breeding tank is fixedly installed with circulating assembly, the inboard wall of ecological simulation breeding tank is fixedly installed with temperature sensor.The utility model, improve the physiological adaptability and activity of Lophius litulon, while filter cartridge can intercept residual bait, feces and other large particle impurities, and biological filter box can efficiently treat water body, and will be discharged to the inside of ecological simulation breeding tank by circulating assembly, reduce new water replacement frequency, can satisfy the water quality condition of clear, conducive to its normal physiological activity and the development of reproductive behavior.

This utility model relates to a mechanism for microbial filtration, belonging to the field of microbial filtration technology. It includes a container for holding a stock solution, a funnel threaded to the lower end of the container, a siphon tube fixedly installed at the lower end of the funnel, a filter plate for filtering microorganisms in the stock solution being snapped into the lower end of the container, a rubber stopper for pressurizing the inside of the container being plugged into the upper end of the container, and a one-way valve fixedly installed on the rubber stopper, the one-way valve facing towards the lower end of the container. A shelf for placing on a table is fixedly installed on the outer side of the lower end of the funnel. The threaded connection between the container and the funnel facilitates disassembly and cleaning, and is easy to operate. The pressure applied to the inside of the container by the rubber stopper causes the stock solution to pass through the filter plate and enter the siphon tube. Utilizing the siphon effect, a negative pressure is created inside the container for continuous filtration. It is easy to use, simple to operate, and suitable for laboratory applications.

The invention provides an integrated indoor three-dimensional recirculating aquaculture system. The integrated indoor three-dimensional recirculating aquaculture system comprises an aquaculture pond unit; a first outlet of the external circulating water treatment unit is communicated with the culture pond unit, and a second outlet of the external circulating water treatment unit is communicated with the internal circulating water treatment unit; the internal circulating water treatment unit comprises a tail water recovery pipeline, a physical filtering unit, a biological filtering unit and a post-treatment return unit which are sequentially connected in series; the multi-stage purification unit is used for returning the culture water subjected to multi-stage purification treatment to the culture pond unit; and the environment adjusting unit is used for adjusting the dissolved oxygen content and temperature in the aquaculture water body. Multi-stage purification and efficient cyclic utilization of aquaculture water are achieved through the internal circulating water treatment unit; the external circulating water treatment unit is used for flexibly supplementing water, the environment adjusting unit can accurately adjust the content and temperature of dissolved oxygen in water, all the circulating units operate cooperatively, the water quality is continuously improved, and stable operation of the system is maintained; the tail water recovery rate of the whole system can reach 90% or above, and the new water supplement amount is greatly reduced.