101results about How to "Purify water" patented technology

The invention provides a desilting and purifying system and method, and belongs to the technical field of river desilting governance, the desilting and purifying system comprises a desilting device and sludge purifying devices, the desilting device is arranged on the water surface of a river, and the sludge purifying devices are arranged on both sides of the river. The desilting device comprises a ship body, a lifter, a stirring and sucking device, a sludge pump and a sludge discharging hose, the ship body comprises buoyancy cabins, an equipment cabin and an operation cabin, the buoyancy cabins are arranged at the two ends of the lower portion of the ship body, the equipment cabin is arranged at the upper end of the buoyancy cabins, the operation cabin is arranged in the center of the ship body and is of a hollow structure, and the lifter is arranged on the upper portion of the operation cabin. A lifting rod is arranged on the lifter, the stirring and sucking device is arranged at the bottom of the lifting rod, a sludge outlet is formed in the top end of the stirring and sucking device, a sludge discharging hose is arranged at the sludge outlet, the sludge pump is arranged in the equipment cabin, the sludge inlet end of the sludge pump is communicated with the sludge outlet through the sludge discharging hose, and the sludge outlet end of the sludge pump is communicated with the sludge purifying device through the sludge discharging hose. The design is scientific and reasonable, arrangement is convenient, and operation cost is low.

The utility model relates to the field of sediment cleaning devices, in particular to a sediment cleaning device for sewage treatment. The technical problem that most sediment cleaning devices are only provided with sediment structures, so that sundries in sewage cannot be automatically cleaned is solved. According to the technical scheme, the sewage treatment sediment cleaning device comprises a sediment cleaning device body. By arranging the supporting and protecting assembly, the device can be stably supported, the stability of the device is improved, meanwhile, impurities in sewage can be treated in a centralized mode, the time-saving and labor-saving purpose is achieved, the impurity cleaning assembly can clean various solid particles such as silt, sludge and fibers contained in the sewage, and the sewage treatment efficiency is improved. The particles can pollute the water quality, the solid particles can be effectively separated from the water, the water quality can be purified, the water quality can be improved, the water body pollution can be reduced, the environment and human health can be protected by adjusting the feeding and discharging assembly, and the purified and precipitated water can be recycled.

The utility model relates to an ecological ditch for purifying farmland recession. The method is suitable for the technical field of ecological restoration. The technical problem to be solved by the application is to provide an ecological ditch for purifying farmland recession. According to the technical scheme adopted by the invention, the ecological ditch for purifying the farmland recession water is characterized by comprising an ecological ditch body, and a water inlet for introducing the farmland recession water is formed in the upstream of the ecological ditch body; the ecological permeable dam is arranged on the upstream of the ecological ditch body and can intercept suspended solids and particulate matters flowing through the farmland recession and provide adhesion and growth matrixes for microorganisms in the ecological ditch body; the water level adjusting structure is arranged in the ecological ditch body and can adjust the water level in the ecological ditch body, so that the ecological environment in the ecological ditch body is kept stable.

The invention discloses a filtering device for a fish-rice symbiotic field irrigation canal, and particularly relates to the technical field of irrigation, the filtering device comprises a shell, the right side of an inner cavity of the shell is fixedly connected with a drainage assembly, the left side of the outer surface of the drainage assembly is fixedly connected with a disinfection assembly, and the middle of the rear side of the disinfection assembly is fixedly connected with a filtering assembly; the right end of the filtering assembly is rotationally connected with a collecting assembly, and the left side of the inner cavity of the shell is fixedly connected with a flushing assembly. According to the filtering device for the irrigation canal of the fish-rice symbiotic field, the drainage assembly is arranged to guide water in the drainage canal and is matched with the disinfecting and killing assembly, so that water purification is facilitated, a healthier living environment is created for aquatic organisms such as carps, and the water quality is improved. And through cooperation of a filtering assembly and a collecting assembly, sterilized water can be filtered and collected again, and the situation that impurities generated in the sterilization process flow into the rice field, and consequently the environment is affected is avoided.

The invention provides a rice crab planting and breeding method which comprises the steps of rice field transformation, rice planting and juvenile crab throwing and feeding, and the rice field transformation comprises the steps that isolation meshes are installed on the periphery of a rice field and used for preventing blue crabs from escaping from the rice field; digging and building a juvenile crab collecting area on one side of the rice field for collecting juvenile crabs; a rice planting area and a juvenile crab breeding area are alternately dug and built in the rice field, the rice planting area is 0.2-0.5 m higher than the juvenile crab breeding area, the rice planting area is inclined to a seedling collecting area by 5-10 degrees, and a seedling collecting pipe is arranged between the juvenile crab breeding area and the seedling collecting area and used for collecting juvenile crabs to the seedling collecting area; a water return channel connecting the upstream of the rice planting area and the seedling collecting area is dug and built, the depth of the water return channel is 50-100 cm, the water in the rice field circularly flows, and bait is properly fed in time. According to the rice and crab planting and breeding method provided by the invention, saline-alkaline tolerant rice and scylla juvenile cultivation are combined, the water body space in the saline-alkaline tolerant rice field is fully utilized, and the method is a novel green, ecological and efficient income-increasing planting and breeding combined production mode.

The invention provides a culture method for shortening the culture cycle of trachinotus ovatus, which specifically comprises the following steps: (1) setting and dividing different culture areas, and spraying compound bacteria liquid in each culture area before fry casting; (2) fry putting: healthy trachinotus ovatus fries are screened and put into each culture area; (3) feed feeding: feeding different nutrient materials in different culture areas; (4) cultivation management; (5) daily management: arranging a light source lamp above the breeding area. By means of the breeding method, the breeding period of the trachinotus ovatus is obviously shortened, the situation that the breeding environment is converted in the breeding process of the trachinotus ovatus is avoided, and the situation that the trachinotus ovatus generates stress reaction or is infected with various diseases, and consequently the breeding cost is increased is avoided. The golden pomfret obtained through the breeding method is high in growth speed, the immunity is improved, the morbidity and the mortality rate are reduced in the breeding process, and the flavor quality of fish products is improved.

The utility model discloses an oxyhydrogen atomizing machine which comprises a water storage tank, an electrolytic bath, an oxygen water collector, a hydrogen water collector and two groups of gas path radiators, the water outlet end of the water storage tank is connected with the water inlet end of the electrolytic bath; the electrolyte enables water to be decomposed into oxygen and hydrogen under the action of direct current in the electrolytic bath; the oxygen output end of the electrolytic bath is connected with the water inlet end of the water storage tank through a group of gas path radiators, the oxygen output end of the water storage tank is connected with the oxygen water collector, and dried and cooled oxygen is obtained after separation by the oxygen water collector; the hydrogen output end of the electrolytic bath is connected with the hydrogen water collector through the other group of gas path radiators; and dry and cooled hydrogen is obtained after separation by the hydrogen water collector. The gas path radiator is additionally arranged at the gas output end of the electrolytic bath, gas electrolyzed by the electrolytic bath is pre-cooled and then separated through the water collector, finally, dry and pure hydrogen and oxygen are obtained, and influences on subsequent gas purity, the service life of equipment and safety are effectively avoided.

The utility model discloses a portable filtering oxygenation device based on ultramicro nano bubbles. A portable filtering oxygenation device based on ultramicro nano bubbles comprises at least one purifying cabin, a water inlet and a water outlet far away from the water inlet are formed in the purifying cabin, a plurality of filtering plates with through holes are arranged in the purifying cabin in the water flow direction, the purifying cabin is divided into a plurality of purifying cavities by the filtering plates, and the purifying cavities are communicated with the water inlet and the water outlet. A filter piece is arranged in each purification cavity; the oxygenation cabin is detachably connected with the purification cabin in a sealed mode, the oxygenation cabin is provided with an ultra-micro nano bubble generating device, and the ultra-micro nano bubble generating device is provided with a liquid inlet, an air inlet and a nozzle; a bubble release opening is formed in the oxygenation cabin; and the liquid inlet is connected with the water outlet. The ultramicro nano-bubble generating device can generate a large number of ultramicro nano-bubbles, the ultramicro nano-bubbles can stay in water for a long time, the concentration of dissolved oxygen in water is rapidly increased, the water quality is improved, and the stability of the dissolved oxygen degree and the water quality in a water tank and a culture pond is guaranteed.

The invention discloses a polyculture method of macroalgae and siganus siganus. By changing a single culture mode, space resources of the whole water body are utilized to the maximum extent, and the water body utilization rate is increased. The macroalgae are bred in the middle-upper water area of the pond through the net cage, sufficient sunlight in the middle-upper water area is fully utilized for growth of the macroalgae, the space under the net cage serves as a place for fish to hide and inhabit, a comfortable environment is provided for fish breeding, fish stress is reduced, and diseases are reduced. And the macroalgae and the cultured fishes are cultured in an isolated manner through the netting, so that the amount of algae ingestion of the fishes can be controlled, healthy growth of the macroalgae is ensured, and collection of the macroalgae is facilitated. The differentiation of the ecological niche enables the fishes and the algae to be mutually beneficial and coexist in the same water body.

The invention relates to flocculation application of paenibacillus polymyxa FangSG106, a product of the paenibacillus polymyxa FangSG106 and a method of the product, and belongs to the technical field of microorganisms. The invention provides a flocculation or water purification application of paenibacillus polymyxa FangSG106 with a preservation number of CGMCC (China General Microbiological Culture Collection Center) No.31655 and an application of the paenibacillus polymyxa FangSG106 in preparation of a biological flocculant or a water purifying agent, further provides the biological flocculant or the water purifying agent based on the paenibacillus polymyxa FangSG106, and also provides a method for removing heavy metals and a water purifying method. The paenibacillus polymyxa FangSG106 disclosed by the invention has broad-spectrum antibacterial activity, and can be used for effectively removing heavy metals and purifying water.

The cultivation device comprises a bracket seat and a cultivation tank, a filter screen assembly is fixedly installed on the inner side of the upper portion of the cultivation tank, a first upper connector and a second upper connector are arranged on the outer side of the upper portion of the cultivation tank, the first upper connector is connected with a drainage pipeline, and the second upper connector is connected with a filtering circulation assembly. A conical bottom shell is arranged on the lower portion of the cultivation tank and provided with a bottom connector and a side connector, the bottom connector is connected with a seedling emergence pipeline and a water inlet pipeline, the side connector and the bottom connector are connected through an anti-sinking pipeline, the water inlet pipeline is connected with a filtering circulation assembly, and an inflation pipe with the bottom end connected with an air stone in an inserted mode is fixed in the cultivation tank. The air stone is located at the bottom of the conical bottom shell, a drainage control valve is arranged on the drainage pipeline, a first water inlet control valve, a sterilization device and a second water inlet control valve are arranged on the water inlet pipeline, and a seedling emergence control valve is arranged on the seedling emergence pipeline. The water changing amount can be reduced, pathogenic organisms can be killed, the water quality is purified, and the survival rate of the aquatic fries is increased.

The invention discloses integrated equipment for water detection and purification in the technical field of water treatment, the integrated equipment comprises a box body, an air pump, a plant storage tank, a detection outer rod and an inner detection head, the air pump is communicated with aeration pipes, propelling nozzles and an air bag through pipelines, a plurality of aeration pipes are arranged at the bottom of the box body, and a plurality of propelling nozzles are arranged on the left side and the right side of the back of the box body. The two detection outer rods extend out of the left side and the right side of the box body respectively, an inner detection head is arranged in the box body, the device can be used for initial rainwater pollution treatment of a river-entering rainwater discharge port and is of an integrated structure, a plurality of independent plant storage tanks are additionally arranged, different plants can be planted on the integrated floating island of the device, and the device is convenient to use. Therefore, the purpose of purifying various pollutants is achieved; meanwhile, an aeration function is also added, so that ultramicro bubbles can be released underwater; the device can also detect the water quality and hydrology of a water body, and can also detect the water quality of initial rainwater by extending the detection outer rod into a river rainwater discharge port.

The invention belongs to the field of municipal drainage, and particularly relates to an underground space structure serving as an emergency regulation and storage space for excessive rainwater. In a normal state, the water inlet channel is normally closed, the special waterproof door is unobstructed, and the rain sewage regeneration module operates normally. During waterlogging, people and vehicles are emptied, the special waterproof door is closed, and the emergency regulation and storage space is used for regulating and storing rainwater. The system comprises a vertical stacking type module and a transverse stacking type module, and comprises a rainwater treatment module, a sewage treatment module, a regulating reservoir module, a drainage pumping station module and the like. The special waterproof door comprises a main door, an auxiliary door, a transition cabin and the like. The outside is communicated with a water inlet closed conduit, comprises a rain gauge and the like, and is controlled by a hydraulic discharge gate and the like. The system further comprises a control system which can switch idle, water inlet, water storage and water drainage modes according to different rainfall conditions, and linkage control over all the devices is achieved. The urban inland inundation can be effectively handled, and reasonable regulation, storage and utilization of rainwater are achieved.

The invention relates to the technical field of salt chemical industry, and particularly discloses an artificial seawater essence and a preparation method thereof. The artificial seawater essence is prepared from the following raw materials in parts by weight: 600-800 parts of seawater, 60-80 parts of magnesium sulfate heptahydrate, 40-60 parts of magnesium chloride hexahydrate, 10-12 parts of calcium chloride, 7-9 parts of potassium chloride, 2-4 parts of sodium carbonate, 1-3 parts of a compound anti-caking agent and 0.3-0.5 part of compound probiotics, by adopting various natural raw materials, reasonably designing the raw material ratio and controlling the process parameters, the prepared artificial seawater essence contains various natural components and rich trace elements, can optimize the water quality, is close to a real seawater environment, has relatively strong biodegradability and excellent anti-caking property, and can be used for preparing the artificial seawater essence. And various requirements for mariculture can be met.

The utility model relates to a kind of environment-friendly sewage sedimentation pretreatment device, it is related to sewage treatment technical field, including pre-sedimentation tank, the upper portion of the pre-sedimentation tank is provided with separation cylinder, the front end of the separation cylinder is installed with sewage inlet pipe in one side, the upper portion of the separation cylinder is installed with separation water outlet pipe, the bottom of the separation cylinder is installed with sludge discharge pipe by connecting pipe, one end of the sludge discharge pipe is equipped with first motor, the other end of the sludge discharge pipe is equipped with sludge discharge port, the inside of the pre-sedimentation tank is equipped with multiple equidistant distribution and parallel inclined plate, the bottom of the pre-sedimentation tank is conical structure, and the bottom of conical structure is equipped with sludge discharge cavity, the lower end of one side of the sludge discharge cavity is installed with second motor, the inside of the sludge discharge pipe and sludge discharge cavity is all installed with auger mechanism, and the scheme solves the problem that a large number of and complex component impurity particles in sewage are not treated directly to deposit, and the problem that the deposition effect is poor and the burden of deposition equipment is increased.

The invention discloses a food production raw material processing device which comprises a supporting frame and a rinsing tank, the rinsing tank is installed at the top end of the supporting frame, a containing cavity is formed in the rinsing tank, a filtering assembly is arranged in the rinsing tank and comprises a rotating rod rotationally installed in the rinsing tank, a first motor is installed on the outer surface of the rinsing tank, and a second motor is installed on the outer surface of the first motor. According to the food production raw material processing device, a combined filter screen structure formed by combining two single screens is adopted, so that the filtering area is increased, the filtering effect is improved, the filtering effect is improved, and the food production raw material processing device has the advantages that the food production raw material processing device is convenient to use and high in practicability. And the steel frame is installed through the staggered steel wires, so that the strength and the stability of the combined type filter screen are effectively enhanced, the combined type filter screen is not prone to deformation or damage in the long-time and high-strength use process, and the continuity and the high efficiency of filtering are guaranteed.

The utility model relates to the technical field of aquaculture devices, in particular to a three-dimensional high-density circulating aquaculture device which comprises an aquaculture pond, a first frame-shaped supporting plate is arranged in the aquaculture pond, a grid plate is placed on the top of the first frame-shaped supporting plate, a sewage draining outlet is formed in the bottom of the left side of the inner wall of the aquaculture pond, and a bottom plate is arranged at the bottom of the rear side of the aquaculture pond. A water purification assembly, a first pump body, a U-shaped supporting plate and a second pump body are arranged at the top of the bottom plate, a third water purification tank is placed at the top of the U-shaped supporting plate, and a second water purification tank is placed at the top of the third water purification tank. According to the three-dimensional high-density recirculating aquaculture device, the grid plate can prevent fishes from submerging to the bottom of the interior of the aquaculture pond and prevent the fishes from being sucked by the dirt suction disc, and excrement of the fishes can penetrate through the grid plate and sink to the bottom of the interior of the aquaculture pond; excrement sinking to the inner bottom of the culture pond can enter the dirt suction disc along with water flow, so that fish excrement in the culture pond is pumped out.

The invention belongs to the technical field of water quality treatment, particularly relates to a river channel multi-stage water quality ecological purification device and method, and aims to solve the problems that in the prior art, water often contains a certain amount of garbage, the garbage is easily accumulated in a water inlet structure in the water inlet process, the water inlet efficiency is influenced, and in addition, when the device is applied to a river channel, the water inlet efficiency is influenced. In order to solve the problems of inconvenience in maintenance of internal modules, the invention provides the following scheme that the device comprises a plurality of mounting grooves formed in a river channel, a purification box is arranged in the mounting grooves, a water inlet cavity and a purification cavity are formed in the purification box, and a water inlet hole corresponding to the water inlet cavity is formed in one side of the purification box; according to the invention, the comprehensive purification of the water quality of the river channel is realized by combining three systems of physical filtration, aquatic plant purification and water pump circulation, and finally the purified water is re-discharged back to the river channel through the water pump, so that a closed circulating purification system is formed, and the water quality is obviously improved.

The invention discloses a three-dimensional ecological fishpond culture system in the field of aquaculture. The three-dimensional ecological fishpond culture system comprises the following steps: 1, wastewater collection and pretreatment; 2, sterilizing and preparing a culture medium; 3, live bait is cultured in the runway type culture tank; 4, a water circulation system and continuous filtration; and 5, artificial wetland treatment and pasture planting. According to the breeding system, wastewater generated after breeding is treated, the water quality is improved, sterilization treatment is conducted, appropriate nutritional ingredients are added, and then the wastewater is discharged into the breeding tank containing microalgae and zooplankton to provide needed nutritional ingredients for the microalgae and the zooplankton, so that the microalgae and the zooplankton are massively bred in the water body, bait is brought to fishes in the constructed wetland, and the quality of the fishes in the constructed wetland is improved. The mode that bait is input depending on the outside in traditional cultivation is changed, self-sufficiency of green bait is achieved, and dynamic balance and efficient cyclic utilization of water are achieved.

The invention discloses a crab pond aquatic plant growth promoter and a preparation method and a use method thereof, and belongs to the technical field of aquatic plant cultivation, the promoter comprises the following raw materials: 35-45 parts of pine needle, 25-35 parts of radix astragali, 20-30 parts of ligusticum wallichii, 15-20 parts of pepper, 35-40 parts of banana peel, 35-40 parts of pitaya peel, and 15-20 parts of Shatian pomelo peel; the raw materials are subjected to crushing, freeze thawing and fermentation to obtain the growth promoter for the aquatic plants in the crab pond. When the protective agent is used, 100 kilograms of the protective agent is thrown to waterweeds on each mu of water surface, and the protective agent is used once every month; the use amount of the protective agent is prevented in the plum rain season, wherein 100 kg of the protective agent is thrown on waterweeds on the water surface per mu, and the protective agent is used once every half a month; the use amount of the protective agent is as follows: 150 kg of the protective agent is thrown to each mu of aquatic plants, and the protective agent is used once every other day and is continuously used for 3-5 times. The method can promote growth of aquatic plant roots in the crab pond, purify water in the crab pond and improve survival and yield of juvenile crabs.

The invention relates to the technical field of sewage treatment, in particular to a ship ballast water ultrasonic disinfection device which comprises an L-shaped pipeline connected with a ship ballast water conveying pipeline, an ultrasonic generator mounted on the L-shaped pipeline, and a first baffle and a second baffle which are mounted in the L-shaped pipeline, the first baffle and the second baffle are used for changing the flow speed of ship ballast water, and the driving piece is installed between the L-shaped pipeline and the second baffle. The ultrasonic generator is used for generating ultrasonic waves, the ballast water is radiated through the ultrasonic waves, so that the ballast water generates an ultrasonic cavitation effect, water molecules are split into free radicals such as OH and H, organic matter in the water is oxidized and enters bacteria, and the sterilization and disinfection effects are achieved; compared with the prior art, the technical scheme has the advantages that the economic cost is lower, and the operation is simple.

A landscape-integrated ecological rainwater inlet device, belonging to the field of municipal drainage structure technology, includes a base box with a drain outlet. A frame is inserted and installed at the opening of the base box. A flat floor with a water inlet is fixedly installed on the upper surface of the frame. A filter grate is embedded in the water inlet of the flat floor. A multi-stage filtration device is detachably installed inside the frame. Two water collection chambers are symmetrically arranged inside the frame. A green plant pot is installed above the flat floor. Four through holes are opened through the lower surface of the green plant pot. Hollow square tubes are fixedly installed at each of the four through holes. The lower ends of the hollow square tubes are inserted and installed inside the frame through the flat floor. A water-absorbing cotton rope is inserted between the two hollow square tubes on the left and right sides. The middle section of the water-absorbing cotton rope is located inside the green plant pot, and the two ends of the water-absorbing cotton rope are located in the corresponding water collection chambers. The overall design of this utility model can realize a closed-loop ecological integrated structure for rainwater collection, purification, and reuse, which has both practical and ecological benefits.

The utility model discloses a phosphate fertilizer production wastewater treatment device which comprises a base, and the top of the base is fixedly connected with a treatment box. Through the cooperation of the base, the treatment box, the treatment opening, the supporting plate and the PH adjusting feeder, a proper amount of chemicals can be fed according to the pH value of wastewater, the PH value of the wastewater is adjusted, a proper chemical environment is created for subsequent treatment, the wastewater treatment effect is improved, and the stirring motor and the stirring blades are matched, so that the wastewater treatment effect is improved. According to the sewage treatment device, fed chemicals can be fully mixed with wastewater, sludge is conveniently discharged through cooperation of the settling tank, the flow guide channel, the supporting frame, the speed reduction motor and the sludge scraping plate, meanwhile, a flocculating agent is fed into the flocculating agent feeder, suspended solids in the wastewater are condensed into large particles, the settling process is accelerated, and then the precipitated wastewater is conveyed into the filtering drawer through the infusion pump; the filter screen can intercept larger solid particles, and the activated carbon plate can adsorb organic matters, peculiar smell and the like in water, so that the water quality is purified.

This utility model provides a high-efficiency and energy-saving integrated tank-pump pressure-stabilizing water tank, relating to the field of water supply equipment processing technology. It includes an integrated tank-pump pressure-stabilizing water tank assembly, with a filter component on its side, and reinforcing and buffer components on its top. The assembly comprises a water tank and an energy-saving pressure-stabilizing pump. In this utility model, multiple filter elements are installed inside the filter box, which effectively filters the water source, removing impurities and particulate matter to prevent them from accumulating inside the tank. The activated carbon box further adsorbs microorganisms in the water source, further purifying the water quality, reducing corrosion and wear of the tank, extending the service life of the integrated tank-pump pressure-stabilizing water tank assembly, and maintaining the cleanliness of the water inside the tank, preventing water quality deterioration due to bacterial growth caused by impurities.

The ecological riverbed structure comprises a sludge layer, a fixed layer and an attachment structure, the fixed layer is arranged on the sludge layer, the attachment structure is fixedly arranged on the fixed layer, and the attachment structure is immersed in a water body; the fixing layer comprises a plurality of mass blocks, the mass blocks are laid on the sludge layer, and the fixing layer is used for fixing the attachment structure; the attachment structure comprises a mounting frame and an attachment assembly, the mounting frame is fixedly connected with the mass block, the attachment assembly is fixedly arranged on the mounting frame, and the attachment assembly is used for attachment of microorganisms. In the application, the attachment structure is used for adsorbing and fixing microorganisms; therefore, growth and reproduction of microorganisms are facilitated, and water quality of river water is purified.

The water storage planting pool comprises a box body, a planting cavity with the top open is formed in the middle of the box body, the bottom wall of the planting cavity is made of permeable materials, the bottom wall of the planting cavity is higher than the inner wall of the box body, and a water seepage cavity is defined by the bottom wall of the planting cavity and the inner wall of the box body; an annular cavity is formed between the outer wall of the planting cavity and the inner wall of the box body, a steel grid plate is arranged at the top of the annular cavity, and a cobblestone layer is laid on the grid plate; the horizontal sections of the cobblestone layer and the grid plate are annular and are matched with the annular cavity; the inner end of the grid plate is fixedly connected with the outer side wall of the planting cavity, and the outer end of the grid plate is fixedly connected with the inner side wall of the box body. Large impurities such as leaves, paper and large silt are intercepted through the cobblestone layer, and the impurities are prevented from entering the primary filtering and settling cavity downwards. A primary sedimentation process occurs in the primary filtering sedimentation cavity, then smaller particulate matters, suspended matters in water and harmful substances are filtered through the fine sand layer and the filter material layer, the water quality is further purified, and a secondary sedimentation process occurs, so that the influence of the harmful substances on accumulated water and plants is reduced; rainwater is fully utilized, and growth of plants in the planting pool is facilitated.

The invention relates to the technical field of electro-adsorption performance experiments, in particular to an electrode assembly, an experimental device for removing micro-plastics in a water environment and a use method. The experimental device comprises the working electrode with the adjustable distance, the distance between the cathode plate and the anode plate is adjusted by increasing or decreasing the number of the copper gaskets so as to adapt to micro-plastics with different particle sizes and concentrations, and the adsorption effect is enhanced. The electrode plate is made of activated carbon fibers with high specific surface area and good conductivity. The experimental device further comprises a stabilized voltage supply, a peristaltic pump, an electro-adsorption device and a water pool container, the peristaltic pump achieves circulating flow of water flow, the micro-plastic concentration between the electrodes is continuously updated, a complete electro-adsorption system is formed, and the adsorption efficiency is improved. The problems that an existing electro-adsorption experimental device cannot flexibly adjust the electrode distance and cannot adapt to the electro-adsorption removal rate of micro-nano plastics with different concentrations and particle sizes are solved, and the universality and efficiency of experiments are improved.

The invention provides a synthetic microbial community and application thereof in degradation of trehalose and biofuel cells, and belongs to the technical field of synthetic microbiology and biological energy. A synthetic microbial community is constructed by means of synthetic biology, the synthetic microbial community comprises genetic engineering escherichia coli and shewanella, and the synthetic microbial community can realize a complete metabolic pathway from trehalose to acetic acid and an efficient electron transport chain; the method can be used for treating trehalose-rich wastewater or wastes and the like; the synthetic microbial community can be used for a microbial fuel cell, can stably generate current density and power density which are higher than those of a single strain or a natural mixed flora in the microbial fuel cell, and has good practicability.

The utility model relates to the technical field of treatment equipment, and discloses multistage biological sludge treatment equipment which comprises a base, a plurality of supporting legs are fixedly connected to the edge of one side of the upper surface of the base, a circulation frame is fixedly connected to the upper ends of the supporting legs, and a treatment barrel is fixedly connected to the upper end of the circulation frame. When the sludge treatment equipment is used, sludge is conveniently conveyed into the treatment barrel from the sludge inlet pipe by opening the electric control valve, water in the purification barrel is pumped from the water suction end by starting the first water pump, the water is conveyed into the annular pipe through the water outlet end, and the water is conveniently sprayed to the surface of the sludge through the liquid spraying head; particles and organic matters in the sludge can be conveniently screened through screening holes in a first screening plate and a second screening plate, at the moment, a second servo motor is started to drive a transmission gear and a rack to rotate while a rotating rod is driven to rotate, and a conveying pipe and a centrifugal barrel are driven to rotate through rotation of the rack.

The invention relates to the field of feed processing, and discloses a compound premix feed for aquatic products, which comprises the following raw materials in percentage by weight: 15% of sweet wormwood, 15% of Sanhuang, 5% of ginger powder, 15% of wormwood, 15% of honeysuckle, 15% of dandelion, 5% of ferrous sulfate and 15% of vitamin B6, the weight ratio of the rhizoma coptidis to the cortex phellodendri to the radix scutellariae is 1: 1: 1. Amur corktree bark has the effects of clearing away heat and toxic materials, eliminating dampness and stopping diarrhea and can improve water quality and reduce reproduction and pollution of harmful microorganisms, honeysuckle flowers have the effects of clearing away heat and toxic materials and resisting bacteria and can directly act on fishes and shrimps and can indirectly purify water quality and maintain cleanliness and stability of water, ferrous sulfate supplements iron elements needed by the fishes and shrimps, and the fish and shrimp feed additive is free of toxic and side effects. The fish and shrimps can effectively absorb nutrient substances in water, promote synthesis of hemoglobin, improve oxygen transport capacity, help the fish and shrimps to better absorb the nutrient substances in the water, and reduce dependence and pollution on the environment.