53results about How to "Increase dissolved oxygen content" patented technology

The invention relates to a pre-fermentation method for improving biogas production of straws and a biogas production fermentation system. The pre-fermentation method comprises the following steps: S1, preparing a mixed microbial agent to be fermented; the mixed microbial agent is prepared by inoculating the following zymophyte in parts by weight into a fermentation culture medium according to the total inoculation amount of 3-10% (v / v): 5-50 parts of bacillus subtilis, 10-20 parts of white-rot fungi, 5-10 parts of aspergillus oryzae, 5-10 parts of trametes versicolor and 5-10 parts of trichoderma viride; s2, uniformly mixing the mixed microbial agent with the micro-nano bubble water, and fermenting to form an enhanced hydrolysis bacterium solution containing a microbial agent fermentation solution and an enzyme solution; s3, spraying enhanced hydrolysis bacteria liquid onto the straws for enhanced hydrolysis so as to complete pretreatment before fermentation and biogas production; wherein the volume of the reinforced hydrolytic bacteria liquid required by each kg of straw is 3-5L. Compared with the prior art, the mixed microbial agent and the micro-nano bubble water are used for carrying out cooperative treatment on the straw, so that the gas production efficiency and the methane production amount of the straw can be effectively improved.

The invention provides a modified oxygen-releasing nano peroxide for degrading organic pollutants, a composite oxygen-releasing material, a preparation method and an application. The modified oxygen-releasing nano peroxide comprises an oxygen-releasing nano peroxide, a pH regulator, a polyvinyl alcohol-poly (N-isopropylacrylamide) membrane layer and a cross-linked chitosan membrane layer, the polyvinyl alcohol-poly (N-isopropylacrylamide) membrane layer wraps the oxygen-releasing nano peroxide and the pH regulator, and the cross-linked chitosan membrane layer wraps the oxygen-releasing nano peroxide and the pH regulator. The polyvinyl alcohol-poly (N-isopropylacrylamide) film layer is coated with the cross-linked chitosan film layer. The modified oxygen-releasing nano peroxide is high in purity and good in dispersity, the content of dissolved oxygen in a water body can be kept stable for a long time, and the influence on the pH value of the environment is small.

The utility model belongs to the technical field of aquaculture, and particularly relates to efficient dissolved oxygen fine filtration equipment applied to aquaculture, which comprises a rough filtration bin, an input pipe fitting is arranged at the top of the rough filtration bin, a rough filtration component is arranged in the rough filtration bin, and the rough filtration component is positioned below the input pipe fitting; the rough filtration assembly comprises a filter cover, the filter cover is trumpet-shaped, a blow-off pipe is inserted into the bottom of the filter cover, and the blow-off pipe penetrates through the side wall of the rough filtration bin; a bottom bin is arranged at the bottom of the coarse filtering bin; a filtering disc, a bracket and an aeration disc are sequentially arranged in the bottom bin from top to bottom. The coarse filtration bin and the coarse filtration assembly are matched for use, so that large suspended solids and part of harmful substances in the aquaculture water are effectively removed, and the water quality is preliminarily improved; through the design of the fine filtration equipment, suspended matters and harmful substances in the water body can be effectively removed on the premise that the treatment rate is not reduced, so that a healthier and more suitable growth environment is created for aquaculture.

The invention provides a wet-process phosphoric acid concentrated waste gas recovery device and a process thereof, and relates to the technical field of chemical production, the wet-process phosphoric acid concentrated waste gas recovery device comprises a tower body, a gas inlet allowing waste gas to enter the tower body is formed in the bottom of the tower body, a gas outlet is formed in the top of the tower body, a spraying assembly is arranged in the tower body, and the spraying assembly can spray an arc-shaped water curtain; the tower body is provided with a gas inlet and a gas outlet, the arc-shaped water curtain is located between the gas inlet and the gas outlet and divides the tower body into a gas storage area and a gas exhaust area, the gas storage area is close to the gas inlet, the gas exhaust area is close to the gas outlet, and the arc-shaped water curtain is used for purifying waste gas entering the gas exhaust area from the gas storage area. The device has the effects of increasing the contact area between a water body and waste gas, enhancing the waste gas purification effect, reducing the possibility that the waste gas is directly discharged without being filtered by water flow, and further meeting the environment-friendly requirement.

The invention relates to the technical field of building roof greening, and discloses a building roof greening and rainwater recycling irrigation system which comprises a microcontroller, a greening module arranged on a building roof, a rainwater recycling module connected with the greening module and an irrigation module. The microcontroller is electrically connected with the greening module, the rainwater recycling module and the irrigation module; the greening module sequentially comprises a water collecting layer, a filtering layer, a protective layer, a pervious concrete layer, a nutrient soil layer and a vegetation layer from bottom to top. The rainwater recycling module comprises a water pumping pipe arranged at the top of the side wall of the water collecting layer and a rainwater recycling box connected with the water pumping pipe; the rainwater recycling box comprises a first filter box, a second filter box, a disinfection box and a clear water box which are sequentially arranged from top to bottom; the irrigation module comprises a first water suction pump connected with the clear water tank, a water outlet pipe connected with the first water suction pump, a water conveying pipe connected with the water outlet pipe, a drip irrigation pipe connected with the water conveying pipe and a water dropper. By means of the system, maximum utilization of rainwater resources and continuous improvement of the ecological environment are achieved.

The utility model provides a fairy shrimp temperature control hatching device which comprises a hatching box, a heating plate, a motor, a rotating shaft, blades and a pushing mechanism, the pushing mechanism comprises a sleeve, a piston, a reset spring, a stress block, a pushing rod, a transverse pipe, a vertical pipe and a jet head, and fairy shrimp eggs and hatching liquid can be poured into the hatching box. A proper temperature environment is provided under the action of a heating plate, meanwhile, a motor can drive blades to rotate through a rotating shaft, so that the fairy shrimp eggs are evenly distributed in hatching liquid, in addition, when the rotating shaft rotates, a push rod can make contact with a stress block, a piston is pushed by the stress block to move towards the interior of a sleeve, and when the piston moves, the stress block is pushed into the sleeve. Air in the sleeve can be pushed into the transverse pipe from the vertical pipe, the air spraying head on the transverse pipe can spray the air out, the content of dissolved oxygen in hatching liquid is increased, meanwhile, upward water flow is formed in the hatching liquid, the phenomenon that the eggs of the fairy years sink to the bottom is avoided, it is guaranteed that the eggs of the fairy years can receive proper heat, and the hatching rate is increased.

The utility model discloses water quality aeration purification equipment suitable for high ammonia nitrogen fishpond culture wastewater, which comprises a device body, a protection box is arranged in the device body, a base is arranged below the protection box, a suction pump is arranged in the protection box, a mounting rack is connected below the base, and the mounting rack is provided with a water inlet. A first water tank, a second water tank and a third water tank are sequentially connected to the lower portion of the mounting frame, the front end of the suction pump is connected with a water pumping pipe, the rear end of the suction pump is connected with a water inlet pipe, a first placing table and a second placing table are connected to the outer wall of the protection box, a first pesticide box is arranged above the second placing table, and a second pesticide box is arranged above the first placing table. According to the device, the content of dissolved oxygen in wastewater can be increased, a proper aerobic environment is provided for subsequent biological treatment, the concentration of ammonia nitrogen in the wastewater is reduced, the water quality of a fishpond is improved, precipitation of sludge and formation of an anaerobic environment are avoided, and subsequent stable operation of the device is ensured.

This utility model relates to the field of fish farming escape prevention technology, specifically to a fish farming escape prevention device, including a base, a fishing net tube fixedly installed on the top of the base, a barrier tube slidably connected inside the fishing net tube, a sealing plate installed on the top of the barrier tube by screws, and an airbag fixedly connected to the outside of the sealing plate. The airbag changes with the water level. The fishing net tube is equipped with stirring blades to agitate the water flow. The use of the airbag allows the height of the escape prevention device to change with the water level, eliminating the need for manual adjustment and preventing fish from easily flying out or swimming out of the top of the escape prevention device, thus ensuring the effectiveness of the escape prevention device. Furthermore, the external wind force drives the blades to rotate, which agitates the water flow inside the fishing net tube, allowing dissolved oxygen and nutrients in the water to be evenly distributed, avoiding local hypoxia or nutrient overload, and providing a good growth environment for the fish.

This invention discloses a river water ecological restoration and purification device, belonging to the field of river water purification technology. It includes a base plate with an air cushion installed at its bottom. Above the base plate, from front to back, are sequentially arranged an ice-breaking and salvage conveying component, a collection and separation component, a water purification component, and an oxygenation component. The collection and separation component contains a vibrating filter component. A drive component is located between the ice-breaking and salvage conveying component and the collection and separation component. A propeller is fixedly installed at the rear of the base plate, and a power component for unmanned operation is installed on the top of the base plate. This invention, through its integrated ice-breaking and salvage conveying component, collection and separation component, vibrating filter component, water purification component, and oxygenation component, highly integrates multiple functional modules such as ice breaking, salvage, conveying, solid-liquid separation, water purification, and oxygenation, filling the gap left by the inability of most cleaning equipment to be used in winter and achieving uninterrupted river ecological restoration.

The invention relates to the technical field of environmental engineering, and discloses an efficient water body oxygenation purification device which comprises a mounting frame, supporting rods distributed on the three side surfaces of the mounting frame in a circumferential array mode, and buoys arranged at the other ends of the supporting rods. The oxygen dissolving mechanism comprises a flowing assembly used in cooperation with oxygen dissolving, a regulation and control assembly used in cooperation with the flowing assembly to control the turbulence degree of the water body, and a positioning assembly used in cooperation with the flowing assembly to prevent the flowing assembly from deviating. Through cooperation of all parts in the flowing assembly, oxygen in air can be introduced into water through the multiple blades, tiny bubbles are formed, the content of dissolved oxygen in the water body is increased, the distance between the blades can be flexibly adjusted through the adjusting and controlling assembly, and after the distance between the blades is adjusted through the positioning assembly, the oxygen content in the water body is increased. The position of the paddle is automatically locked, so that the position of the paddle is prevented from deviating due to external force; through the cooperation of the splicing assembly and the plugging assembly, the buoy with a suitable specification can be rapidly replaced without using a dismounting tool.

The utility model discloses a kind of mixed aeration devices for industrial sewage treatment, including square frame, the outer surface of square frame is fixedly installed with support piece, the upper surface of square frame is fixedly installed with speed reducer, the output end of speed reducer is fixedly connected with screw rod, the outer surface of screw rod is threadedly connected with screw plate, the inner wall of square frame is fixedly connected with two support slide posts, the outer surface of each support slide post is slidably connected with transmission plate, and transmission plate is fixedly connected with screw plate, the bottom surface of each transmission plate is fixedly connected with transmission square bar, the bottom end of two transmission square bars is fixedly connected with connecting frame. The device is driven by speed reducer to rotate screw rod, so that screw plate, transmission plate and other components are linked, the height of square box, mixing assembly and aeration assembly is adjusted, different depth sewage tank can be accurately matched, and the device can fully mix and aerate sewage under different working conditions, improve sewage treatment efficiency.

The invention relates to a wave-breaking floating body with an ecological restoration function, comprising an ecological reef and fixed piles. A guide plate is arranged in the ecological reef, the guide plate adopts a square structure, one end of which is arranged above the inside of the ecological reef, and the other end is arranged below the inside of the ecological reef. A counterweight is arranged at the bottom of the ecological reef. The advantages and effects of the invention are as follows: when the wave and the guide plate on the ecological reef collide, atmospheric oxygen is fully dissolved in the water body, which plays the function of aeration and increases the dissolved oxygen content in the water; the guide effect of the guide plate is utilized to guide the waves carrying environmentally friendly microorganisms attached to the microbial solid carrier into the lower layer of the external water body, purifying the environment of the lower layer of the water body, degrading the bottom mud deposition, and repairing the ecological environment of the water area of ​​the offshore aquaculture area; the waves are guided to the lower layer of the water body, so that the aquaculture area above the water body has a relatively stable aquaculture environment, has the function of wave breaking, and provides excellent conditions for offshore aquaculture.

The invention discloses a preparation method for producing a biological bacterial fertilizer from lincomycin waste mushroom dregs, and relates to the technical field of fertilizer preparation, and the preparation method comprises the following steps: pretreatment of lincomycin waste mushroom dregs, microbial inoculation, strain fermentation, trace element addition and liquid fertilizer finished product detection. The method has the advantages that the waste lincomycin residues are alternately soaked with diluted hydrochloric acid and a sodium hydroxide solution, various impurities on the surfaces and in the waste lincomycin residues can be fully dissolved, alkaline harmful substances and pollutants combined with metal ions can be decomposed under the acidic condition, and the waste lincomycin residues can be recycled under the alkaline condition. The micro-bubbles can decompose acidic residual antibiotics and organic substances, in the continuous aeration process, on one hand, the micro-bubbles can scour the surfaces of mushroom dregs to enable impurities to fall off and be dissolved more easily, on the other hand, the content of dissolved oxygen in liquid is increased, favorable conditions are created for follow-up microorganism survival, and meanwhile oxidative decomposition of harmful substances is facilitated.

The invention relates to the technical field of printing and dyeing wastewater treatment, and particularly discloses a multi-stage printing and dyeing wastewater treatment and detection device which comprises a treatment pond and a grid filter pond, the grid filter pond is located in the treatment pond, and a water inlet of the treatment pond is connected to the grid filter pond; the conveying end of the medicament supplementing mechanism is connected to the inner cavity of the treatment tank; the clear water discharge mechanism is arranged in the inner cavity of the treatment tank in a manner of floating along with the water flow height and is used for sucking out surface clear water generated after precipitation; the aeration mechanism is arranged at the bottom of the treatment tank; the detection mechanism is arranged on the inner walls of the grating filter tank and the treatment tank; wherein the grid filter tank comprises a grid tank, a cleaning assembly is arranged in the grid tank, and the cleaning assembly is used for automatically and periodically cleaning a grid part of the grid tank. The system realizes multi-stage automatic treatment of wastewater and has an automatic cleaning function, and can effectively guarantee that the printing and dyeing wastewater reaches the standard.

The utility model relates to water body oxygenation technical field especially, more particularly to a fan circulating water oxygenation equipment. Its technical scheme includes: pedestal, suction chamber and suction pipe, be equipped with the nozzle on the pedestal, be equipped with the suction chamber on the nozzle, the other end of suction chamber is equipped with the mixing chamber, the other end of mixing chamber is equipped with the diffusion chamber, the mixing chamber, nozzle, suction chamber and diffusion chamber constitute the jet structure, jet structure is used for gas water mixture, increases water body oxygen content, the bottom end suction inlet of suction chamber is equipped with suction pipe, the bottom end of suction pipe is equipped with the impurity removal structure, and the impurity removal structure is used for removing the impurity that suction pipe orifice filters. The utility model discloses through the jet structure and carries out the water body oxygenation circulation of lasting, has improved water body dissolved oxygen content, the impurity that automatic cleaning filter plate surface adheres, ensures the filtering effect of filter plate sustained and stable, avoids the equipment performance decline caused by the impurity blockage or accumulation.

The present invention discloses a method for preparing γ-polyglutamic acid by microbial fermentation. In the method, enzymatic hydrolysate is used as the main carbon source of the fermentation medium, a magnetic oxide / epoxy resin porous composite material is added to the fermentation medium, and γ-polyglutamic acid is prepared by fermentation of Bacillus subtilis. Compared with the prior art, the yield of γ-polyglutamic acid prepared by the present invention is higher.

A kind of local water area algae salvaging and aeration device, with algae salvaging, local water flow enhancement and dissolved oxygen content promotion function.The technical scheme includes remote control unmanned ship body part, algae salvaging part and aeration part.Algae salvaging part is composed of algae collection nozzle, height adjustment main, passive swing lever, swing lever control motor, algae collection pump, algae filter cartridge and oxygen-increasing guide vane plate;aeration part is composed of aeration pump and aeration head.Algae collection nozzle walks with remote control unmanned ship body, and separates and collects algae from water through algae filter cartridge under the action of algae collection pump.Aeration pump fills oxygen to local water area through aeration head.The beneficial effect is that algae salvaging, local water flow enhancement and dissolved oxygen content promotion can be realized simultaneously, with simple structure, mobile convenience, energy saving and environmental protection advantages, which can meet multiple needs of algae bloom early prevention and control, algae bloom outbreak process emergency disposal and later ecological restoration, especially suitable for local water area algae bloom prevention and control and comprehensive treatment such as elimination.

The invention relates to the technical field of flow guide and water distribution for water ecological management, and discloses a flow guide and water distribution device for water ecological management, which comprises a water treatment tank, and also comprises a water guide tank fixedly connected to one side of the water treatment tank and used for guiding water treated by the water treatment tank; and the inclined plate is installed in the water guide tank, and a through hole is formed in the side, away from the water treatment tank, of the water guide tank and used for guiding treated water. By arranging the opening and closing mechanism, water treated by the water treatment tank is guided out through the water guide pipes, closure of two water guide pipes is controlled and water outlet of the water guide pipes on the two sides is limited by controlling movement of check blocks, and therefore the water level in the water treatment tank is increased, and mixing treatment is conducted in cooperation with medicine flowing out of the medicine box; and then the water is guided out along the water guide pipe, so that the self-purification capacity of the water body is enhanced, pollutants in the water body are absorbed and degraded, and a clear water type water ecosystem is successfully constructed and stably operated.

The utility model discloses a microorganism dissolved oxygen synergistic stirring device with high stirring efficiency, which belongs to the technical field of stirring devices and comprises a fermentation tank, a stirring motor is bolted to the top of the fermentation tank, a stirring shaft is fixedly connected to the output end of the stirring motor, two stirring impellers are bolted to the stirring shaft, and the stirring impeller is fixedly connected to the output end of the stirring motor. The stirring motor, the stirring shaft and the stirring impeller are arranged, microorganisms in the fermentation tank can be stirred, oxygen can be conveyed to the bottom of the fermentation tank through cooperation of the oxygen supply pump, the connecting pipe, the rotating sleeve, the aeration pipe and the aeration holes, and the microorganisms in the fermentation tank can be stirred. The microorganisms are in full contact with oxygen in the stirring process, so that the contact amount of the oxygen and the microorganisms is increased, the oxygen is quickly dissolved in the microorganisms, and the content of dissolved oxygen in the microorganisms is increased.

The utility model relates to sewage treatment technical field, concretely relates to a kind of intelligent operation management system of sewage treatment plant, including control module;Secondary sedimentation tank bottom is provided main return mud pipe and auxiliary return mud pipe, main return mud pipe, auxiliary return mud pipe and secondary sedimentation tank connecting end are respectively provided first jet pipe, second jet pipe, main return mud pipe and auxiliary return mud pipe top are respectively provided sludge backflow mechanism and electromagnetic regulating mechanism, and sludge backflow mechanism and sludge backflow mechanism are electrically connected with control module, aeration tank is communicated aeration equipment by aeration pipe, first jet pipe is communicated aeration equipment by aeration auxiliary pipe, second jet pipe is communicated aeration equipment by aeration branch pipe;Secondary sedimentation tank is connected sampling device, and sampling device includes camera, camera shoots sludge sedimentation image in set time, and is transferred to control module;The utility model sets up sludge backflow double channel, selects appropriate backflow channel according to sludge amount in secondary sedimentation tank, avoid pipeline silt, effectively maintain sewage treatment system operation.

The utility model belongs to the technical field of fishing box structures, and particularly relates to a novel fishing box with a skylight structure, which comprises a box body and a box cover hinged with the box body, a windowing assembly capable of being opened and closed is hinged on the box cover, an oxygen pump is arranged on the windowing assembly, and the output end of the oxygen pump penetrates through the bottom of the windowing assembly to be connected with the inside of the box body. By arranging the window opening assembly, a fishing worker can open the fishing box without opening the box cover, the oxygen pump on the window opening assembly can increase oxygen in the box body, the content of dissolved oxygen in water is increased, and therefore it is ensured that fishes can survive for a longer time in the fishing box.

The utility model discloses an energy-saving farmland irrigation device, which relates to the technical field of irrigation devices and comprises a liquid storage barrel, a liquid pumping pipe is arranged at the bottom of the liquid storage barrel, and the inlet end of the liquid pumping pipe is attached to the bottom wall of the liquid storage barrel; the first arc-shaped flow guide part is fixed to the inner wall of the liquid storage barrel and located on one side of the liquid pumping pipe, and the outer wall curved surface of the first arc-shaped flow guide part is tangent to the pumping direction of the liquid pumping pipe; the water pump communicates with the liquid storage barrel through a liquid pumping pipe, and the water outlet end is connected with a three-way valve; the liquid return pipe is connected to an outlet end of the three-way valve and extends to the top end in the liquid storage barrel; the first arc-shaped flow guide part is fixed at the outlet end of the liquid return pipe, the second arc-shaped flow guide part is fixed at the outlet end of the liquid return pipe, the second arc-shaped flow guide part and the inner wall of the liquid storage barrel are arranged at an interval, and the curved surface of the outer wall of the second arc-shaped flow guide part is tangent to the discharge direction of the liquid return pipe. And the structure of the swirling flow field is optimized, so that the liquid can be fully circulated and mixed in the liquid storage barrel.

The utility model relates to the technical field of freshwater fish culture, and particularly discloses a fish hatching device which comprises a base, a hatching box is installed on the base, and a water collecting tank is arranged on the periphery of the hatching box. The water spraying assembly is arranged at the top of the incubator and comprises a supporting frame connected with the incubator, and the driving motor is installed on the surface of the supporting frame; the water spraying assembly comprises a water spraying pipe and a supporting seat, the water spraying pipe is fixedly connected with an output shaft of the driving motor, a water inlet end is arranged on the surface of the water spraying pipe, one end of the supporting seat is rotationally connected with the water inlet end, and the other end of the supporting seat is fixedly connected with an external water pipe. The conical part is arranged, so that sewage can be conveniently discharged when the interior of the barrel is cleaned before roe hatching, fries can be conveniently put after roe hatching, and when a water source in the hatching box is continuously increased, the water source overflows from the top of the cylinder part, so that the flowability of the water source in the hatching box is kept, and the roe hatching rate is effectively increased.

The utility model discloses an energy-saving sewage treatment EGA intelligent tank, which comprises an EGA intelligent tank main body, and a water inlet pipe and a water outlet pipe which are arranged on the top of the EGA intelligent tank main body, the water inlet pipe is arranged on the right side of the water outlet pipe, a speed increasing pipe is arranged on the top of the water inlet pipe, and a mounting shaft is fixedly connected on the inner wall of the speed increasing pipe. And the bottom of the mounting shaft is rotationally connected with a turbine rod. According to the utility model, the speed increasing pipe is arranged, so that water flow passes through the turbine rod with a mechanical structure to increase the flow speed, and the higher water flow speed is beneficial to enhancing the oxidation effect and increasing the content of dissolved oxygen in the water body, thereby being beneficial to degrading organic matters by microorganisms in the water and promoting the decomposition and removal of organic matters in wastewater, and being capable of reducing the energy consumption of the pump body; and meanwhile, the intelligent control valve is adopted to adjust the drainage flow, accurate regulation and control are conducted according to needs, excessive drainage and energy waste are avoided, and energy loss generated when water flow passes through the pipeline can be reduced in cooperation with an auxiliary assembly.

The utility model relates to the technical field of water conservancy emergency equipment, specifically discloses a bubble disturbance type ice melting device based on unmanned ship platform, including bubble ice melting device, temperature monitoring module and total control module, and temperature monitoring module is composed of temperature sensor fixed in the lower part of sand head air disc. The utility model discloses bubble ice melting device and temperature sensor cooperate with each other, utilize temperature sensor real -time mobile type monitoring river and lake temperature before the operation of bubble ice melting device, send data to total control module, utilize total control module to carry out unified control to bubble ice melting device, when temperature is lower than set threshold value, total controller starts bubble ice melting device, forms bubble group, and a large number of bubbles contact ice layer and collapse rapidly, and the impact and the disturbance to the water flow of generation make ice layer melt. The utility model discloses a bubble disturbance type ice melting device based on unmanned ship platform, which solves the problem of deterioration of water conservancy building structure caused by rapid freezing weather in existing rivers and lakes.

The utility model relates to the technical field of sewage treatment, in particular to integrated rural sewage treatment equipment adopting a nano-bubble technology. Comprising a first water inlet, a first discharge outlet, a second discharge outlet, a second water inlet, a water inlet sedimentation tank, a sewage purification tank and a water outlet sedimentation tank, the first water inlet is formed in the upper portion of one side of the water inlet sedimentation tank, and the water inlet sedimentation tank is communicated with the sewage purification tank through the second water inlet; one side, far away from the water inlet sedimentation tank, of the sewage purification tank is communicated with the water outlet sedimentation tank through a first discharge port, and one side, far away from the sewage purification tank, of the water outlet sedimentation tank is provided with a second discharge port. According to the nano-bubble purifier, the treatment efficiency of the nano-bubble purifier is greatly improved by using the nano-bubble technology, the mounting type filler and other innovative technologies, the water environment can be better protected, and the ecological pressure is relieved; the structure is more compact, the use is simpler and more convenient, and the requirements of rural wastewater treatment can be better met.

The utility model discloses an assembly type small-sized flowing riverway ecological auxiliary device, which comprises a water baffle, two water baffle clamping grooves and an unpowered mixer, the two water baffle clamping grooves are respectively arranged on riverway revetments on two sides, the water baffle is arranged between the two water baffle clamping grooves, a plurality of water passing holes are arranged on the water baffle, and the unpowered mixer is arranged on the water baffle. Each water passing hole is provided with an unpowered mixer, each unpowered mixer comprises a conical pipe, a fixed edge is arranged on the outer circle of the large-diameter end of each conical pipe, the conical pipes are installed on the water baffles through the fixed edges, feeding ports of the conical pipes correspond to the water passing holes of the water baffles, and the feeding ports of the conical pipes correspond to the water passing holes of the water baffles. And a dosing device is mounted at a feeding hole in the large-caliber end of the conical pipe. The device has the advantages of convenience in assembly and disassembly, energy conservation, good treatment effect, safety and environment friendliness.

The invention provides a compound fertilizer for zizania aquatica planting and a preparation method thereof. The preparation method mainly comprises the following steps: (1) preparation of calcium peroxide nanoparticles; (2) preparation of a fertilizer core; (3) preparation of a coating agent; the compound fertilizer prepared by the invention has good slow release performance and certain biodegradability, and can provide oxygen for a long time while improving the utilization rate of the fertilizer, so that water eutrophication caused by excessive fertilizer is relieved, and the yield and quality of zizania aquatica are successfully improved.

The invention discloses an indoor cultivation device for wheat seedlings, and relates to the technical field of wheat cultivation, the indoor cultivation device comprises a hydroponic frame, a first cultivation frame is placed in the hydroponic frame, the first cultivation frame is slidably connected with at least two second cultivation frames, and one side, close to the first cultivation frame, of the hydroponic frame is fixedly communicated with a first spray head. By arranging the water pump, circular flowing of water is achieved, the spraying speed of water flow on the right side is reduced through the multiple dispersing fins which are distributed in a disordered mode and arranged in the first spray head, and therefore on one hand, dissolved oxygen in water is effectively increased and a nutrient solution is evenly distributed through high-speed water flow on the left side, the water quality is improved, and the water changing frequency is reduced; on the other hand, wheat roots are protected through slow-speed water flow on the right side and prevented from being damaged, and growth of wheat seedlings is not affected.

The invention relates to the technical field of underground water treatment, and provides a recharge bin which comprises a filtering and exhausting mechanism, a secondary filtering mechanism, an aeration mechanism and a zoning partition plate, the filtering and exhausting mechanism is arranged on the top of a recharge tank body, and water is introduced into the recharge tank body after passing through the filtering and exhausting mechanism; the filtering and exhausting mechanism is used for filtering and exhausting water, the secondary filtering mechanism is fixedly arranged in the recharge tank body and is used for filtering water entering the recharge tank body, and the aeration mechanism is fixedly arranged in the recharge tank body and is arranged below the secondary filtering mechanism; the aeration mechanism is used for inflating water, the zoning partition plate is fixedly connected in the recharge tank body, and the zoning partition plate is arranged between the secondary filtering mechanism and the aeration mechanism, and by means of the technical scheme, the problem that in the prior art, when an existing recharge bin inflates water, the water filtering effect of the recharge bin is possibly affected is solved.