69results about How to "Extend the purification time" patented technology

The water purifier for deeply treating tap water through filtering, purifying, mineralizing, activating, alkalifying and softening consists of one mineralizing tray and filtering element. The filtering element includes successively arranged active carbon layer, small Chinese medicinal stone grain layer, Chinese medicinal stone-ceramic ball layer, tourmaline-ceramic ball layer and calcium sulfite ball layer. Inside the mineralizing tray, is the mixture comprising large Chinese medicinal stone grain 50-60 weight portions, tourmaline 15-20 weight portions, magnetite 8-10 weight portions and composite tourmaline material 5-8 weight portions. The purified water can promote metabolism, neutralize acid metabolites in body, eliminate free radical, prevent diseases and result in other health functions.

The invention discloses a method for purifying aquatic water by using microbes and plants in combination, which is characterized by comprising the following steps: (1), screening at least two kinds of avirulent microbes capable of denitrifying efficiently from the aquatic water or aquatic sludge by using an ammoxidation culture medium or a denitrification culture medium, mixing the two kinds of avirulent microbes, immobilizing the obtained microbial colonies on a carrier to complete the immobilization of the microbial colonies; (2) building a plant filter pond communicated with an aquatic pond, planting edible vegetables or forage grasses in the plant filter pond, filling the immobilizing carrier on which the microbial colonies are immobilized in a plastic mesh bag and putting the plastic mesh bag at the root of plants; and (3) building a closed circulation aquatic system and driving aquatic water circulation. The method has the advantages of overcoming the drawbacks of easy death and loss of floating microbes, low activity and low degradation efficiency, improving the purification efficiency and reducing the purification time of the aquatic water by using the synergistic effect between the plants and the microbes, and saving water source.

The invention relates to a fresh scent type sterilizing environment-friendly air purifying agent. Nano-titanium dioxide, traditional Chinese medicine extracting liquid, tea polyphenol-containing synergistic tea tablets and other auxiliary materials are combined and compounded, the nano-titanium dioxide has strong sterilizing effect, the traditional Chinese medicine extracting liquid enhances the adsorption effect of formaldehyde and can improve the odor of the air, calm the mind and soothe the nerves, and the tea polyphenol-containing synergistic tea tablets guarantee stability of the functional component and improve the air purifying effect; the fresh scent type sterilizing environment-friendly air purifying agent does not contain toxic chemical components, does not generate toxic and harmful substances polluting the environment, is safe and environment-friendly, is long in purification time and low in cost, can effectively remove toxic and harmful gas, and has bacteriostatic, disinfection and deodorization effects; and the preparation method is simple, the stability is high and the purification efficiency is high.

The invention discloses an odor removing and air refreshing composition, which is prepared from the following raw materials by weight: 5-15 parts of pomegranate peel, 5-15 parts of orange peel, 50-75 parts of aloe, 20-45 parts of black tea, 15-30 part of mint, 5-25 parts of pogostemon cablin, 15-30 parts of Lonicera japonica, 10-30 parts of atractylodes lancea, 5-25 parts of phellodendron, and 5-15 parts of Gardenia jasminoides Ellis. The composition provided by the invention adopts high safety and non-toxic raw materials, effectively inhibits and kills the harmful bacteria in indoor air, quickly removes irritating odor and eliminates formaldehyde, not only can eradicate secondary pollution completely, but also has the effects of aroma resuscitation, consciousness restoring, heart nourishing and mental-tranquilization. The preparation method of the composition provided by the invention is simple and is easy to operate.

The invention discloses an indoor air purifier. The indoor air purifier comprises an air pump, an air guide pipe and a square water storage tank body and is characterized in that an atomization device is arranged between the air pump and one end of the air guide pipe; an air inlet is formed in the lower end of the water storage tank body; the other end of the air guide pipe is connected with the air inlet; an air supply pipe is arranged in the lower end of the water storage tank body and is fixedly connected to the air inlet; a plurality of first air holes are formed in the air supply pipe; at least two air partition plates which are fixedly arranged at the upper part and the lower part are arranged in the water storage tank body; the air partition plates are obliquely arranged; a semi-cylindrical convex bar is integrally arranged near the upper end part of each air partition plate; a plurality of second air holes are formed in the convex bar; an air outlet or a water inlet is formed in the upper end of the water storage tank body; an anti-floatation mechanism is arranged between the air partition part at the undermost part and the bottom of the water storage tank body. The indoor air purifier is excellent in purification effect, small in structure, small in size and low in cost, and is suitable for indoor application.

The invention relates to a water-oxygen fractionating purification vacuum glove box which is characterized in that an air pump (21) is taken as a power source, air in a system is circularly purified by flowing through a water purifying chamber and an oxygen purifying chamber, the water purifying chamber is divided into a front stage and a rear stage, and the fractionating purification of water in the air is realized, thereby the aim for purifying water and oxygen with high efficiency is achieved. A separation net four group is formed by a stainless steel filter sieve (26), an external upper ring (27), an external lower ring (28), an internal upper ring (37) and an internal lower ring (38), and the purification chamber is divided into two water purifying chambers and one oxygen purifying chamber.

A disclosed gas purifying apparatus for pyrolyzed biomass fuel comprises a purification box, two separation plates are arranged in the purification box, and the internal space of the purification box is divided into a first chamber, a second chamber and a third chamber from left to right by the two separation plates; the top of the first chamber is provided with an atomization rotation nozzle; the second chamber is inside provided with a breather pipe, the other end port of the breather pipe stretches into a base solution filling the bottom of the second chamber and has a distance of 7-18 cm to the solution level; and the top of the third chamber is provided with a rotation atomization nozzle. By employing the three chambers, an acidic gas in a mixed gas can be successively purified from left to right, so that the gas purifying apparatus gives play to multiple purification effect, and is capable of relatively thoroughly completely purifying the acidic gas.

The invention relates to a CYP101 enzyme recombinant vector, a construction method thereof and a CYP101 enzyme high-efficiency expression and purification method, and belongs to the field of biotechnology. A PET28a-CYP101 high-efficiency expression vector is constructed and transformed into BL21 plysS strain, and high-purity enzyme with purity higher than 95% is obtained by a simple two-step purification method including affinity chromatography and ion exchange chromatography after inducible expression. Compared with the prior art, CYP101 is simply and efficiently produced, the cost is low, purification is facilitated, and 23mg of target protein with the purity higher than 95% can be obtained by per liter of culture media. The CYP101 enzyme high-efficiency expression and purification method can be used for expressing and purifying CYP101 enzyme, the production efficiency of a laboratory is greatly improved, and experimental cost is greatly reduced. The CYP101 enzyme high-efficiency expression and purification method has an excellent application prospect for large-scale CYP101 enzyme production and purification.

The invention relates to a degassing and deslagging compound purification process for molten aluminum smelting. The degassing and deslagging compound purification process comprises degassing and deslagging of molten aluminum in a furnace as well as degassing and deslagging of molten aluminum in a pouring process outside the furnace; degassing and deslagging of molten aluminum in the furnace comprises the following steps: (1), adding an efficient active non-toxic refining agent in the molten aluminum in the furnace; (2), with nitrogen as a carrier in the furnace, blowing the refining agent into a melt; the degassing and deslagging of refined molten aluminum outside the furnace comprises the followings: (1), introducing nitrogen to the bottom of a molten aluminum filtering chute outside a furnace outlet, and leading the nitrogen in the filtering chute through air bricks vertically mounted at the bottom of the filtering chute; (2), enabling the molten aluminum to flow to a watering pot position and arranging a vertical second-stage filtering plate at the watering pot position. According to the process, the efficient active refining agent is added in the furnace, nitrogen is introduced and used as carrier, the refining agent is blown to the bottom of the molten aluminum and molten into droplets for adsorbing slag inclusion and in the process, hydrogen is diffused to bubbles constantly, so that the purpose of purifying molten aluminum is realized.

The invention discloses full-machine-made sand plastering mortar taking limestone as aggregate and a preparation method of the full-machine-made sand plastering mortar. The full-machine-made sand plastering mortar taking limestone as the aggregate comprises the following components in parts by weight: 140-160 parts of cement, 770-820 parts of limestone machine-made sand, 40-70 parts of limestone powder, 0.2-0.3 part of cellulose ether, 0.005-0.01 part of an air entraining agent and 0.02-0.04 part of a thixotropic lubricant. Wherein the limestone machine-made sand and the limestone powder are prepared by crushing high-calcium stones, the fineness modulus of the limestone machine-made sand is 2.5, and the fineness modulus of the limestone powder is 0.07. The full-machine-made sand plasteringmortar taking limestone as the aggregate has the advantages of less bleeding, good workability, strong binding power after construction, no shrinkage, no hollowing, smooth and flat surface, low raw material cost, no secondary pollution, heat conduction, good heat dissipation and capability of adsorbing formaldehyde and purifying air.

The invention relates to the technical field of purification equipment, in particular to workshop waste gas treatment equipment which comprises a high-pressure gas bin and a plurality of sets of exhaust pipelines installed on the outer side wall of the high-pressure gas bin in a communicating mode, the opening direction of each set of exhaust pipelines faces upwards, and a gas inlet pipeline is arranged at the bottom of the high-pressure gas bin in a communicating mode. A one-way valve is arranged on the air inlet pipeline; the equipment can effectively improve the waste gas purification effect, reduce the content of impurities in waste gas and conveniently protect the environment and the human body, meanwhile, the diversity of equipment purification modes is improved, the functionality of the equipment is effectively improved, and the practicability is improved.

The invention relates to a liquid exhaust pipe purifier. A shell is divided by an insulating partition plate perpendicular to the axis of the shell into two closed expansion cavities. An elastic net cylinder parallel to and coaxial with the shell is installed in each expansion cavity. Closed purification ring cylinders defined by the shell, the partition plate and the net cylinders are filled with purification liquid. The purification ring cylinders are communicated with elastic cooling boxes, metal gas guide pipes are fixed to the gas inflow end and the gas outflow end respectively, a metal ventilation pipe perpendicularly penetrating through the partition plate is fixed to the partition plate, the metal gas guide pipes and the metal ventilation pipe are electrically connected with the positive electrode of a high-voltage power source, and the shell is electrically connected with the negative electrode of the high-voltage power source. The purifier is low in manufacturing cost and small in size, harmful gas and impurities in tail gas can be efficiently purified, the auxiliary silencing function is achieved, the temperature of the tail gas can be reduced, and the service life of an exhaust pipe is prolonged.

The invention discloses a traditional Chinese medicine deodorizing air purifying agent and a preparation method thereof. The traditional Chinese medicine deodorizing air purifying agent is prepared from the following raw materials in parts by weight: 10-15 parts of fructus amomi, 10-15 parts of cinnamon, 5-10 parts of moxa leaf, 14-18 parts of cortex fraxini, 12-16 parts of pine needle, 7-14 parts of Chinese tallow leaf, 16-22 parts of eupatorium, 8-12 parts of philodendron oxycardium, 10-15 parts of cyrtomium fortunei, 18-24 parts of radix stemonae, 11-17 parts of rhizoma atractylodis, 15-20 parts of Chinese redbud, 5-10 parts of fructus forsythiae, 13-19 parts of leaf of chinese ilex, 8-12 parts of hibiscus syriacus and 10-15 parts of saxifraga stolonifera. The air purifying agent provided by the invention is capable of effectively inhibiting and killing harmful bacteria in air, quickly removing irritating peculiar smell and avoiding secondary pollution, and also has the effects of inducing resuscitation due to fragrance, refreshing, tranquilizing mind by nourishing the heart, and diminishing inflammation and detoxifying; the air purifying agent is capable of improving the immunocompetence of the human body, and has prevention and adjunctive treatment effects on diseases such as respiratory influenza and viral influenza. The air purifying agent provided by the invention is non-toxic and pollution-free, long in purification time, safe and convenient to use, and safe and environmental friendly, and has no any toxic and side effects on the human body.

The invention discloses a domestic air purifier. The domestic air purifier comprises a purifier main body, a housing and a base plate; a display screen is connected with the middle position of the topof the purifier main body in an inserting manner; one side, close to the display screen, of the purifier main body is connected with a humidifying button in an inserting manner; according to the domestic air purifier, rolling wheels can provide moving capability for the purifier main body so that the purifier main body can move flexibly; an axial-flow fan can be used for initiatively sucking airinto the purifier main body so that the indoor air flows faster, the purification time is shortened and the purification efficiency is improved; active carbon and an active catalyst arranged in a filter core can be used for absorbing and decomposing harmful substances contained in the air, so the indoor harmful gases are fundamentally reduced; a silver ion filter screen can also be used for sterilizing the purified air; and people can also connect the purifier main body to a mobile terminal through a Bluetooth linking module so as to realize remote control on the purifier main body.

The invention discloses a constructed wetland tank; a waterproof wetland wall of the constructed wetland tank includes a division region tank wall that is an arc tank wall raised out, two water division walls are arranged in the rear of a wetland tank water inlet, the two water division walls are connected at one end, the other ends of the two water division walls are connected with a vegetation region tank wall, the vegetation region tank wall is connected with one end of one outflow region tank wall, the other ends of the outflow region tank walls are connected together, the joint of the two outflow region tank walls is provided with a wetland tank water outlet, an outflow wall is arranged in the front of the wetland tank water outlet, two ends of the outflow wall are connected to the tail ends of the vegetation region tank walls, and the outflow wall is provided with a plurality of homogenous flow outlets. A composite wastewater treatment system is also disclosed; the constructed wetland tank and the composite wastewater treatment system allow water flows to be uniformly distributed, water flow speed is decreased, water retention time is extended, wastewater purification time is longer, and pollutants are degraded more thoroughly.

The invention discloses a composition for purifying water for giant salamander. The composition comprises, by weight, 10-12 parts of EM powder, 30-50 parts of adsorbent, 6-8 parts of compound enzyme,8-10 parts of calcium peroxide, 8-12 parts of calcium dihydrogen phosphate and 8-12 parts of chitosan, and the adsorbent comprises modified zeolite, activated carbon and alum. The composition can massively adsorb harmful substances and impurities which can be decomposed and detoxified in a centralized and targeted manner, so that water purifying effect is improved greatly, long-time purifying effect is maintained, and good purifying effect is realized through mutual cooperation of improving of water microorganism environment, improving own purifying performance of water, increasing water oxygen content and improving water pH.

The invention discloses an acid mist purification device applied in the chrome plating process. The acid mist purification device comprises a purification box, and two partition plates are arranged in the purification box and divide the internal space of the purification box into a first chamber, a second chamber and a third chamber from left to right; the top of the first chamber is provided with a rotating atomization spray head, a breather pipe is arranged in the second chamber, the other end opening of the second chamber stretches into the position 7-18 cm under the solution level of an alkaline solution filled in the bottom of the second chamber, and the top of the third chamber is provided with a rotating atomization spray head. According to the acid mist purification device, acid gas in mixed gas can be sequentially purified by the chambers from left to right, a multiple purification action is achieved, and more thorough and complete purification can be achieved.

The invention belongs to the field of fine chemical industry, and particularly relates to a novel refining and purification method of N-acylamino acid. The method comprises the following steps that 1, the N-acylamino acid is synthesized through a conventional condensation reaction; 2, most of ethyl alcohol in liquid subjected to the condensation reaction is removed through vacuum distillation; 3, an organic phase is separated from a water phase through acidification, and by means of cooling, the N-acylamino acid and water are made to form dispersion liquid; 4, water in the dispersion liquid is removed through a diaphragm filter press, dispersing and washing are conducted through water of which the mass is equal to that of materials, filtration is conducted through a filter, dispersing and washing are repeatedly conducted in this way for 3-5 times, drying is conducted, and high-purity N-acylamino acid solid powder is obtained. According to the novel refining and purification method of the N-acylamino acid, the problems that in the prior art, the purification effect is poor, the efficiency is poor, products are prone to yellowing, and by-products can be produced through part products and solvent can be effectively solved.

The invention relates to the technical field of desulphurization and dust removal equipment, in particular to a rotary fan-shaped multi-layer desulphurization and dust removal device. The rotary fan-shaped multi-layer desulphurization and dust removal device comprises a first support foot frame, wherein a treatment tank is arranged on the first support foot frame; a second support foot frame is arranged on the top surface of the treatment tank; a spraying liquid box is arranged on the second support foot frame; three separation plates are uniformly arranged in the treatment tank; the two-surface angle between the two adjacent separation plates is 120 degrees; the treatment tank is separated into three fan-shaped treatment cavities; the three fan-shaped treatment cavities are respectively afirst fan-shaped treatment cavity, a second fan-shaped treatment cavity and a third fan-shaped treatment cavity. The use is convenient; the waste gas in the three fan-shaped treatment cavities can besynchronously treated; the waste gas can be sufficiently mixed with clearing liquid; the purification time and efficiency are greatly improved.

The waste gas treatment device comprises an installation frame and a support fixed to the top of the installation frame, a reaction furnace is fixedly installed on the support, the top of the reaction furnace communicates with an exhaust pipe, and a heat recovery tank, a filtering tank and a purification tank are sequentially fixed to the top of the installation frame from back to front; and the left side of the heat recovery tank communicates with a high-temperature induced draft fan, and an air inlet of the high-temperature induced draft fan communicates with one end of an exhaust pipe. According to the waste gas treatment device for polycrystalline silicon preparation and the use method thereof, through the arrangement of the shaking anti-blocking mechanism, airflow generated when a high-temperature induced draft fan drives waste gas to flow is conveniently used as power, then reciprocating vibration of a filter screen is achieved, impurities accumulated on the filter screen are effectively reduced, the workload of workers is reduced, and the working efficiency is improved. And through the arrangement of the heat recovery mechanism, heat in the waste gas can be conveniently recycled, and heat loss is effectively reduced.

The invention discloses an industrial automatic waste gas purification device, and belongs to the technical field of industrial waste gas purification. The industrial automatic waste gas purification device comprises a purification box, a motor is fixedly arranged on the top face of the purification box, the lower end of a gas outlet pipe penetrates through the top face of the purification box, extends into the purification box and is connected with a gas exhaust box, and a plurality of supporting legs are welded to the bottom face of the purification box in an annular structure. By means of an exhausting assembly, the motor drives the gas outlet pipe to rotate, so that the gas outlet pipe drives the connected gas exhaust box to rotate; a gear A on a connecting rod connected with the gas exhaust box can be meshed with an annular rack when doing circular motion, so that the gear A rotates, and the gear A can drive an L-shaped rod to doing circular motion; at the moment, a sealing block in an air inlet hole is closed, and a sealing block in an air outlet hole is opened, and purified gas is exhausted through the gas outlet pipe; and by means of the sealing block, the purification time of the gas in the purification box can be prolonged, the gas and a neutralizer are fully purified, and the purification effect of the device is better.

The invention discloses intelligent control indoor air purifying equipment. The intelligent control indoor air purifying equipment comprises a machine seat, a machine body which is arranged on the machine seat, a first purifying part which is arranged in the machine body, a washing part and a second purifying part; the first purifying part comprises a first purifying chamber which is formed in the machine body and a second purifying chamber which is formed in the machine body; a first filtering net and a second filtering net are arranged in the first purifying chamber in sequence; an air quality detecting part is arranged between the first purifying chamber and the second purifying chamber; an air inducing chamber which is communicated with the second filtering net is also arranged adjacent to the first purifying chamber; the air quality detecting part comprises an air quality sensor which is communicated with external air, and a control device which is communicated with the air quality sensor; the control device is communicated with an air inducing part in the air inducing chamber, and can control the air inducing part to act to induce the air which is filtered by the first filtering net and the second filtering net in sequence to the second purifying chamber. The intelligent control indoor air purifying equipment is simple in structure; a very good using effect can be achieved.

The invention discloses a portable air purifier with a fragrance atomization function and a use method of the portable air purifier, relates to the technical field of plant essential oil air purification, and aims to solve the problem of how to improve environmental comfort on the premise of guaranteeing air purification in the prior art. A purification cavity is formed in the interior of a shell, air inlets are formed in the two sides of the bottom of the purification cavity, negative pressure fans are fixedly installed in the interiors of the air inlets, an electrostatic adsorption mechanism is installed at the lower end of the interior of the purification cavity, storage batteries are arranged on the two sides of the electrostatic adsorption mechanism, an atomization mechanism is arranged at the upper end of the interior of the purification cavity, the atomization mechanism and the shell are fixed through a supporting frame, the supporting frame is annularly arranged on the exterior of the atomization mechanism, a water storage cavity is formed in the atomization mechanism, an atomization cavity is formed below the water storage cavity, a water mist outlet is formed in the rear end of the atomization cavity, a fragrance storage box is arranged at the upper end of the atomization mechanism, and the interior of the fragrance storage box is filled with plant essential oil.

The invention provides a novel air channel device. The novel air channel device comprises an air channel body; the air channel body includes an intake port, an absorption filter area, a sterilization and disinfection decomposition area, a static pressure bin area, a fan power area and an exhaust port; the intake port and the exhaust port are respectively formed in two sides of the air channel body, and are arranged in parallel; the sterilization and disinfection decomposition area, the static pressure bin area and the fan power area are arranged between the intake port and the exhaust port; the fan power area is near the exhaust port; and the intake port, the absorption filter area, the sterilization and disinfection decomposition area, the static pressure bin area, the fan power area and the exhaust port are communicated in sequence to form a similar n-shaped channel. The novel air channel device can randomly improve the efficiency of each grade of purification treatment according to environment demands and designed calculation requirements, and effectively solves the defect of incapability of effectively promoting the purifying effect due to short and small air channel static-pressure cabin of a traditional purifier and the limitation of functional area design.

The invention relates to the technical field of urban rainwater control and utilization, in particular to a combined type rainwater infiltration tree pool. The combined type rainwater infiltration tree pool comprises a front pool (19) and a water inlet (2), wherein the front pool (19) is provided with an abandon flow chamber (4) and a sediment chamber (5) which are separated; the water inlet (2) is selectively communicated with fluid in the abandon flow chamber (4) or the sediment chamber (5), the abandon flow chamber (4) and the sediment chamber (5) are separated through a baffle plate (20), and the bottom part of the water inlet (2) is higher than the top surface of the baffle plate (20). According to the combined type rainwater infiltration tree pool disclosed by the invention, runoff rainwater on an urban road and a plaza can be subjected to pollution interception, purification and emission reduction.

The invention relates to the technical field of environmental protection and water purification, in particular to a water source protecting area highway runoff collecting and emergency purifying system. The system comprises a flow distribution pool, a physical adsorption pool, an emergency storage pool and a grass planting ecological pool. The flow distribution pool, the physical adsorption pool,the emergency storage pool and the grass planting ecological pool sequentially communicate in series. The flow distribution pool communicates with a road surface runoff water input pipe, a later-period runoff water output pipe, a flow distribution pool water output pipe and a flow distribution pool check valve, and a rapid starting and closing valve is arranged in the flow distribution pool. The physical adsorption pool communicates with a physical adsorption pool water output pipe, and multiple layers of activated carbon plates are arranged in the physical adsorption pool. The emergency storage pool communicates with an emergency storage pool water output pipe and an emergency water input pipe, and a valve well and a bidirectional emptying valve are arranged in the emergency storage pool.The grass planting ecological pool communicates with a grass planting ecological pool water output pipe, a flow guide wall and a fine stone baffle are arranged in the grass planting ecological pool,and aquatic ecological plants are planted on the bottom of the pool.

The invention relates to the technical field of passive room appliances, and discloses an air purification device used in the passive room, which comprises a purification box body. A base is fixedly connected to the bottom of the purification box body, trundles are rotatably connected to the interior of the base, a rectangular frame is communicated with the front surface of the purification box body, fan blades are rotatably connected to the inner side wall of the rectangular frame through a rotating shaft, and a supporting strip is pasted and fixed to the lower surface of each fan blade. Theinner wall of the rectangular frame is connected with a plurality of fan blades through the rotating shaft, the supporting strips are fixed to the lower surfaces of the fan blades, the supporting strip is fixed on a long strip through a connecting piece, a fixing block is installed on the rear surface of the long strip, the output shaft of an electric push rod is connected to the fixing block, every time the electric push rod operates, the long strip can be pushed to slide upwards, the output shaft of the electric push rod can be pushed to slide up and down, fan blade angle swing is achieved,for air in the same sealed space, the fan blade angle swing can shorten the purification time, and efficiency is high.

The invention discloses an efficient rice field shrimp culture ecological cycle culture method. A shrimp culture pond is arranged in a rice field, a circulation ditch communicating with the shrimp culture pond is formed in the outer side of the rice field, the drainage end of the shrimp culture pond guides culture wastewater into the rice field from the exterior of the rice field in an S shape through the circulation ditch, then the culture wastewater is guided into an ecological fishpond, and the ecological fishpond communicates with the shrimp culture pond; and cross-shaped shrimp ditches are formed in the positions, in the two sides of the shrimp culture pond, of the rice field correspondingly. Water in the shrimp culture pond and the ecological fishpond flows into the rice field from the interior of the rice field through the circulation ditch and then circularly enters the shrimp culture pond and the ecological fishpond, water in the ecological fishpond flows into the shrimp culture pond, trash fishes and redundant feed in the water also provide foods for crayfishes, the oxygen increasing amount in the water is increased through flowing of the water, and the growth of the crayfishes is promoted. Rice, the shrimp culture pond and the ecological fishpond are mutually circulated and promoted to form a relatively complete ecological circle, and green ecological culture is promoted.

The invention provides a sewage purification device. The sewage purification device comprises a primary purification box and a refined-grade purification box which are communicated through at least one pipe. The primary purification box is divided by first grids into a primary buffering chamber, a first primary purification chamber and a second primary purification chamber, wherein the primary buffering chamber, the first primary purification chamber and the second primary purification chamber are communicated, and the first primary purification chamber and the second primary purification chamber are provided with filter elements; the primary buffering chamber is communicated with a water inlet, and the filter elements are connected with the inner wall of the first primary purification chamber and the inner wall of the second primary purification chamber in a sealed-sliding mode respectively; the refined-grade purification box is divided by second grids into a first refined-grade purification chamber, a second refined-grade purification chamber and a third refined-grade purification chamber, wherein the first refined-grade purification chamber, the second refined-grade purification chamber and the third refined-grade purification chamber are spaced through refined-grade buffering chambers; the refined-grade buffering chambers are communicated with a water outlet, and refined-grade filter elements are arranged in the first refined-grade purification chamber, the second refined-grade purification chamber and the third refined-grade purification chamber respectively, and are connected with the inner wall of the first refined-grade purification chamber, the inner wall of the second refined-grade purification chamber and the inner wall of the third refined-grade purification chamber in a sealed-sliding mode respectively. By means of the sewage purification device in the technical scheme, domestic sewage can be subjected to stage treatment, the purification degree is high, and application occasions of purified sewage can be expanded.