46results about How to "Play a role in pollution" patented technology

The invention provides a novel safe biological feed which comprises basic ration, sodium humate, montmorillonite and synbiotics. To feed the livestock and poultry with the novel safe biological feed of the invention can reduce the condensation of ammonia gas in animal houses and improve cultivation environment, meanwhile, the invention enhances the immunity of animal organism, keeps balance of intestinal flora of the livestock and poultry to avoid diarrhea and dysentery and advances the feed conversion ratio and egg production rate.

The invention relates to mortar crack-resistance impervious water-proofing powder which is prepared from the following materials in mass parts and the additional proportion: 1.5-3.5 parts of closed-grained powder, 1.5-3.5 parts of expansion material, 0.2-0.6 part of water reducing agent, 0.2-0.4 part of moisture repel and 0.01-0.03 part of air entraining agent. A preparation method of the water-proofing powder comprises the following steps: putting 1.5-3.5 parts of closed-grained powder, 1.5-3.5 parts of expansion material, 0.2-0.6 part of water reducing agent, 0.2-0.4 part of moisture repel and 0.01-0.03 part of air entraining agent in a mixer, evenly mixing to obtain the mortar crack-resistance impervious water-proofing powder. Cement concrete and mortar are added to overcome the disadvantages of brittleness, crack and not enough compactness of cement gel hard material, thereby playing an impervious water-proofing role, improving the self permanent water-proofing performance of a concrete structure, saving the complex technology of adhering coiled materials, and therefore, the cost is saved.

The invention relates to a charged membrane device for water processing. The device comprises a power supply, a membrane group device and a membrane assembly, wherein the membrane group device is groove-shaped, the upper portion and the lower portion of the membrane group device are open and the periphery of the membrane group device is sealed, the membrane assembly is arranged inside the membrane group device, and the outer surface of a hollow fiber membrane wire is coated with a layer of outer tubular supporting layer having a mesh multi-hole structure to form a hollow fiber membrane. When the device is applied in an immersion type membrane separation technology, under the action of current of the power supply, the hollow fiber membrane wire is shielded by the negative electrode of the outer tubular supporting layer, and pollutants with negative electricity can hardly pollute the hollow fiber membrane under the action of electrostatic repulsive force and the flocculation of an electrode dissolution flocculating agent, so that membrane pollution is controlled. The charged membrane device having an anti-pollution function and capable of generating the flocculating agent can control membrane pollution effectively and has the advantages of being high in stain resistance, high in strength of the membrane wire, free of addition of the flocculating agent, capable of purifying waterquality, practical and the like.

The invention discloses a method utilizing active carbon to control MBR membrane pollution, and relates to the field of water treatment. Active carbon particles are fixed on the filter membrane of a MBR membrane module, the MBR membrane module is composed of flat membranes or hollow fiber membranes: (1) if the MBR membrane module is composed of flat membrane, the active carbon particles are covered on the surface of the filter membrane to form a flat particle layer, the method comprises the following steps: preparing a dual-layer screen cage from rigid stainless steel screen, filling active carbon particles into the screen cage, placing the screen cage on the surface of the flat membrane; or the flat particle layer is prepared by the following steps: adhering the active carbon particles together by an adhesive to form a flat box shape, and then fixing the flat box on the surface of the flat membrane; (2) if the MBR membrane module is composed of hollow fiber membrane, the active carbon particles are filled in the filter membrane to form an annular cylindrical structure, the method comprises the following steps: preparing a screen cage from rigid stainless steel screen, filling active carbon particles into the screen cage, and finally inserting the screen cage into hollow fiber membrane; or the adhering the active carbon particles together by an adhesive to form a hollow cylinder, and then fixing the hollow cylinder on the exterior of hollow fiber filaments.

The invention relates to a full-automatic medicated bath device and a control system of the full-automatic medicated bath device. The full-automatic medicated bath device comprises a medicine decocting device, a medicated bath tub and a medicine liquid conveying device between the medicine decocting device and the medicated bath tub, and further comprises a medicine liquid circulating heating device. The control system of the full-automatic medicated bath device comprises a power supply module connected with an electric appliance control element, and the power supply module is connected with a medicine decocting heating control module, a medicated bath medicine liquid heating control module, a medicated bath medicine liquid conveying control module, a medicine liquid discharge level control module and a medicated bath medicine liquid level control module. In the medicated bath therapy process, medicine liquid can be heated in a circulating mode, the temperature of the medicated bath medicine liquid reaches needed constant temperature, heating is fast, time and labor are saved, fastness and energy saving are achieved, quality is reliable, safety and environmental protection are achieved, low carbon is achieved, pollution is avoided, the cost of medicated bath therapy is lowered, the therapy effect is remarkable, the device can stop work in the state of having no medicine and lacking medicine, the device does not need to be managed by special personnel in daily use, and the automation degree is high.

The invention relates to a gasoline engine tailing gas particle filtering device catalyst and a preparation method thereof. The catalyst comprises a carrier, the inner wall of a hole of the carrier iscoated with a catalytic coating layer, the coating mount of the catalytic coating layer is 50-120 g / L, the height of the catalytic coating layer in the axial direction is 100% of the height f the carrier, the catalytic coating layer comprises cerium-zirconium rare-earth oxides, gamma-aluminum oxides and precious metal active components, the precious metal active components comprise Pd and Rh, wherein the loading amount of Pd is 0.1-1.5 g / L, and the loading amount of Rh is 0.05-0.5 g / h. the catalyst has the advantages that through the improvement of a catalytic coating layer coating technology, the uniform dispersing distribution on the inner wall structure of the hole of the catalytic coating layer is achieved to significantly reduce the gas discharging back pressure of a particle filtering device catalyst, the effects of intercepting particles and converting gaseous pollutants are well achieved by the uniformly distributed catalytic coating layer, and therefore gas discharging back pressure is reduced by the prepared filtering device catalyst while the particle capturing rate and catalytic performance are not impacted by negative influences.

The invention discloses an ecological ditch system capable of preventing rainfall runoff erosion and reinforcing pollutant purification. The system comprises a collecting tank for collecting solid pollutant particles, a bottom slope, a side slope, an aeration device and a biological filler baffle, wherein the collecting tank is in a staircase structure and used for preventing pollutants in the collecting tank from longitudinally flowing along with the water flow; the collecting tank is composed of a bottom and a side wall; both sides of the collecting tank are sequentially connected with the bottom slope and side slope from bottom to top; the gradient of the bottom slope is 0.1-0.5, and submerged plants are grown on the bottom slope; the gradient of the side slope is 0.7-0.9, and emerging plants are grown on the side slope; the aeration device is composed of aeration pipes and an aerodynamic system which are connected with each other; the aeration pipes are arranged at the center of the bottom of the collecting tank at equal intervals; the aerodynamic system is arranged on the bottom of the collecting tank; both sides of each aeration pipe are provided with joint pins for fixing the biological filler baffle; and the biological filler baffle performs the functions of biological purification and water flow prevention.

The invention discloses a portable membrane electrode assembly directly generating ozone in water and a preparation method of the portable membrane electrode assembly. An anode is a coating electrode(an active coating is lead dioxide, nickel and antimony doped stannic oxide, boron doped diamond and the like) with a titanium mesh as a substrate, and the coating electrode efficiently electrolyzes water to generate the ozone. A cathode is a titanium mesh, a platinum plated titanium mesh, carbon cloth, carbon felt, a stainless steel wire mesh and the like. An ion exchange membrane is arranged between the cathode and the anode. The cathode, the anode and the ion exchange membrane are subjected to hot pressing on a hot pressing machine, and then the membrane electrode assembly is manufactured.During operation, the membrane electrode assembly is directly put into water, the anode and the cathode are connected with a positive pole and a negative pole of a direct-current main source correspondingly, and the ozone can be directly generated when the membrane electrode assembly is electrified. The technology achieves good application prospects.

The invention discloses a slow-release fertilizer special for cotton and a preparation method thereof. The slow-release fertilizer special for the cotton is prepared from the following raw materials: by weight, 12-15 parts of urea, 12-15 parts of ammonium chloride, 6-9 parts of potassium chloride, 5-8 parts of monoammonium phosphate, 1-2 parts of copper sulfate, 1-2 parts of sodium selenite, 1-2 parts of ferrous sulfate, 2-3 parts of quicklime, 5-6 parts of meerschaum, 2-3 parts of calcium carbonate, 1-2 parts of melia root bark powder, 1-2 parts of drug residue ash, 0.01-0.02 part of compound sodium nitrophenolate, 2-3 parts of brown sugar and 1-2 parts of waste engine oil. In the slow-release fertilizer special for the cotton, through a bonding effect of the brown sugar, the copper sulfate, the sodium selenite and the ferrous sulfate are mixed, so that when the fertilizer releases, balance fertilizer efficiency can be guaranteed. The waste engine oil can coats all the fertilizer components so as to play a slow release effect. The quicklime can improve heavy metal pollution of soil, can combine heavy metals to deactivate the heavy metals, and can improve growth environment and conditions of the cotton. Because of reasonable allocation and slow release of nutrient elements such as nitrogen, phosphorus, potassium and various trace elements, the nutrient elements such as the nitrogen, the phosphorus, the potassium and the various trace elements are beneficial for growth of the cotton. The cotton yield can be increased by 20% to 25%, and diseases and insect pests during cotton growing periods can be decreased.

The invention relates to a photocatalysis colored paint and a preparation method thereof. First of all, mesoporous nanometer titanium dioxide powder is dispersed in an aqueous epoxy colored paint with a dispersion machine to obtain a mixed reagent, wherein, the mesoporous nanometer titanium dioxide powder takes up 1 percent to 5 percent by weight percentage while the aqueous epoxy colored paint takes up 95 percent to 99 percent; and then the mixed reagent, liquid epoxy resin and water are mixed in the proportion of 2-3: 1: 1-2 so as to obtain the photocatalysis colored paint. The photocatalysis colored paint prepared by the preparation method of the invention can not only improve the quality of the colored paint and ensure the colored paint to have high performance of photocatalytic degradation, but also can adopt water as a thinner and has extremely low VOC, strong adhesive force to various base materials, good abrasive resistance, print resistance and good water resistance and alkali resistance and simultaneously has the effect of mineralizing and degrading environmental pollutants and inhibiting and killing bacteria, thus expanding the range of application of the colored paint and obtaining good market efficiency.

The invention discloses a tideland semi-closed multi-stage comprehensive ecological culturing method. According to the invention, a multi-stage comprehensive ecological culturing mode is adopted; onlythe fish in fish-shrimp-crab mixed culturing ponds needs to be fed on a floating granular puffed feed; when the tide rises, seawater is supplemented into a water inlet ditch, and oysters cultured inthe water inlet ditch are fed on organic matters and inorganic matters in the supplemented seawater, so a purifying effect is exerted on the supplemented seawater; purified seawater flows into the fish-shrimp-crab mixed culturing ponds and becomes pond water, and a residual feed for the fish and the organic matters and the inorganic matters generated by fish-shrimp-crab metabolism in the fish-shrimp-crab mixed culturing ponds are brought into an oyster hang-culturing pond with the pond water; the oysters cultured in the oyster hang-culturing pond are fed on the residual feed, the organic matters and the inorganic matters brought by the pond water, so the purifying effect is exerted on the pond water; when the tide falls, a part of the purified pond water is discharged into the sea, so thepollution of fish-shrimp-crab mixed culturing to the water environment can be reduced; and water exchanging can be realized by utilizing the tide, so energy consumption and cost of the tideland semi-closed multi-stage comprehensive ecological culturing method provided by the invention can be reduced.

The invention relates to mortar crack-resistance impervious water-proofing powder which is prepared from the following materials in mass parts and the additional proportion: 1.5-3.5 parts of closed-grained powder, 1.5-3.5 parts of expansion material, 0.2-0.6 part of water reducing agent, 0.2-0.4 part of moisture repel and 0.01-0.03 part of air entraining agent. A preparation method of the water-proofing powder comprises the following steps: putting 1.5-3.5 parts of closed-grained powder, 1.5-3.5 parts of expansion material, 0.2-0.6 part of water reducing agent, 0.2-0.4 part of moisture repel and 0.01-0.03 part of air entraining agent in a mixer, evenly mixing to obtain the mortar crack-resistance impervious water-proofing powder. Cement concrete and mortar are added to overcome the disadvantages of brittleness, crack and not enough compactness of cement gel hard material, thereby playing an impervious water-proofing role, improving the self permanent water-proofing performance of a concrete structure, saving the complex technology of adhering coiled materials, and therefore, the cost is saved.

The invention discloses a graphene wave-absorbing film coating and a preparation method thereof. The graphene wave-absorbing film coating comprises the following components by weight: 10-30 parts of polymer resin, 0.05-5 parts of graphene powder, 30-85 parts of iron-silicon-aluminum alloy powder, 30-80 parts of ferrite, 30-80 parts of iron slurry, 1-10 parts of aluminum powder, 1-5 parts of an auxiliary agent, an 2-20 parts of deionized water. The coating is prepared by simply mixing and stirring all the components. The coating takes polymer resin as a carrier, and graphene and a metal wave absorption and shielding material are added. After the coating is applied and dried to form a film, good noise absorption and shielding effects can be achieved.

The invention discloses a rock slope ecological regreening protection structure. The rock slope ecological regreening protection structure comprises a slope, a slope substrate layer is arranged on the slope, a rectangular frame is arranged on the slope substrate layer, a water storage frame integrated with the rectangular frame is arranged at the lower end of the rectangular frame, the rectangular frame is connected with the slope through a connecting mechanism, and the rectangular frame is filled with planting soil abutting against the slope substrate layer. The invention further discloses a maintenance device of the rock slope ecological regreening protection structure. A first protection net, a cotton layer and a second protection net are jointly provided with a plurality of fertilizer liquid pipes in a penetrating mode, and the multiple fertilizer liquid pipes are all inserted into the planting soil. The maintenance device can effectively prevent the loss of the planting soil, can improve the efficiency that rainwater permeates into the planting soil, and improves the slope greening effect; and meanwhile, the later maintenance of the planting soil and green plants is facilitated through an injection mechanism, simpleness and rapidness are achieved, and fertilizer liquid pipes are conveniently disassembled for cyclic utilization.

The invention discloses an integrated spraying-internal circulation granular active carbon / dynamic membrane bioreactor organic waste gas treatment device and a treatment method thereof, and relates to the field of organic waste gas purification. The device comprises a spraying tower and a reaction chamber; an exhaust port is formed in the top end of a tower body of the spray tower, and a spray head, a splitter plate and a filler layer are arranged below the exhaust port; the bottom of the filler layer is communicated with an organic waste gas inlet; the reaction chamber is positioned below the filler layer; a membrane bioreactor, an aerator and a stirrer are mounted in the reaction chamber; a liquid outlet of the reaction chamber is communicated with a spray head through a connecting pipe, and spray liquid backflow is realized through a lifting pump; and granular active carbon is uniformly distributed in the reaction chamber. According to the invention, cyclic utilization of a spray liquid is realized, the process is simple, the device occupies a small area, the spray liquid does not need to be replaced, and the purification efficiency on the organic waste gas is high.

The invention relates to a preparation method of a self-cleaning agent for kitchens; the self-cleaning agent can effectively solve the problems of dispersion and suspension stabilization of photocatalytic purification self-cleaning agents and has good usability. After the self-cleaning agent is sprayed by a user directly, a purification film layer with good self-cleaning performance is formed, andthus the problems of long-term and effective pollutant-degrading and self-cleaning effects are achieved. The method comprises the steps: according to the mass percentage, firstly, adding 0.05-2% of afilm-forming agent into 98-99% of a water-borne nano-visible light catalyst liquid at the rotational speed of 3000-5000 rpm, mixing evenly, supplementing an insufficient part with deionized water, continuing to stir for 30-120 min at the rotational speed of 3000-5000 rpm, and thus obtaining a spray precursor liquid; and according to the weight, firstly, loading 10-80% of the spray precursor liquid into an atomizing can, then filling with 20-90% of a propellant by a one-step pressure canning method, sealing, and thus obtaining the finished product. The raw materials are rich, the preparation method is simple, the self-cleaning agent is easy to produce and prepare and low in cost, has good visible light catalytic performance, can effectively play pollutant-degrading and self-cleaning effects for a long time, and is an innovation in cleaning agents for kitchens.

The invention relates to a method for treating arsenic-containing waste acid by taking fayalite as an in-situ iron source, and belongs to the technical field of heavy metal pollution treatment. The preparation method comprises the following steps: ball-milling fayalite until the particle size is not greater than 45 microns to obtain fayalite powder; adding H2O2 into waste acid, conducting uniformmixing, then adding the fayalite powder, conducting uniform mixing, and conducting stirring and pre-dissolving treatment for 2-6 h at room temperature to obtain a solid-liquid mixture; adjusting the pH value of the solid-liquid mixture to 1.5-4.0, carrying out arsenic removal reaction for 12-24 hours under the conditions of normal pressure and 85-95 DEG C, carrying out solid-liquid separation to obtain an arsenic-containing solid substance and filtrate, carrying out stockpiling treatment on the arsenic-containing solid substance, and carrying out deep arsenic removal treatment on the filtrate.According to the method, natural fayalite is used for removing arsenic, the stockpiling amount of sludge in the waste acid treatment process can be reduced, and meanwhile natural resources can be fully utilized.

The invention provides a nano waterproof material for buildings and a preparation method thereof, and relates to the technical field of building materials. The invention discloses a nano waterproof material for buildings. The nano waterproof material is prepared from the following components: acrylic resin, silicone acrylic emulsion, Texanol, diatomite, nano titanium dioxide, nano silica powder, adispersing agent, an antifoaming agent, a bactericide and water. The material is excellent in waterproof performance and long in service life. In addition, the invention further provides a preparation method of the nano waterproof material for the building. The preparation method comprises the following steps: preparing a mixed emulsion, mixing the filler and the auxiliary agent, and preparing afinished product. The method is simple in process, and the prepared product is good in waterproof performance and long in service life.

The invention discloses a skewer clamping device and a smokeless automatic barbecue machine. The skewer clamping device comprises a first transmission part, a rotating part, an elastic part, a fixingpart and a clamping part, wherein the fixing part is sleeved on the rotating part; one end of the rotating part is fixedly connected with the first transmission part, a mounting hole is formed in theother end of the rotating part, one end of the elastic part and one end of the clamping part are arranged in the mounting hole, one end of the elastic part is connected with the mounting hole, the other end of the elastic part is connected with the clamping part, the clamping part slides in the direction of the mounting hole, and skewer holes are formed in the clamping part in the direction of themounting hole. The clamping part has a tendency of sliding towards the outside of the mounting hole under the elastic action of the elastic part, and the skewer holes are in a tightened state in a mutual extrusion state; overcoming the elastic force effect of the elastic part, the clamping part slides into the mounting hole, and the skewer holes are in a loose state. According to the skewer clamping device, skewers are inserted, locked, pressed and separated, and skewer feeding and skewer discharging are facilitated; the skewers can rotate and be driven to rotate, heating is uniform, manual skewer overturning is not needed, and manual labor is reduced.

The invention discloses a human body face air disinfection, isolation and protection device. The human body face air disinfection, isolation and protection device comprises an air filtering module, a primary sterilization module, an air supply module and a power module, wherein the air supply module is connected with face wearing equipment; and the power module provides power. When the human body face air disinfection, isolation and protection device is used, air is filtered at first to remove microparticles and harmful objects in the air, then the air is sterilized and disinfected by the primary sterilization module, finally, the filtered and sterilized air is delivered into the face wearing equipment by the air supply module after passing through a secondary sterilization module, and the face wearing equipment directly delivers the air to the face of a person, so that the person can breathe the filtered and sterilized clean air. Therefore, after the human body face air disinfection, isolation and protection device is used, bacteria spreading and infection in the air can be completely eradicated well, and effects of sterilizing, disinfecting and isolating pollution are achieved really.

The invention discloses a stuffed nose cover for preventing dust and haze and applying medicines through a nasal cavity. The stuffed nose cover comprises a tubular nose plug tube, a nose cover body, an inner film fixed buckle, an outer film fixed buckle, a medicine applying film, a filter film and a liquid diluting body; the tubular nose plug tube is tightly connected with the nose cover body; the nose cover body is connected with the inner film fixed buckle; the medicine taking film or the filter film is arranged between the nose cover body and the inner film fixed buckle; the outer film fixed buckle is connected with the inner film fixed buckle; the filter film is arranged between the outer film fixed buckle and the inner film fixed buckle; an inner cavity of the inner film fixed buckle is a medicine applying cavity; and the liquid diluting body is arranged in the medicine applying cavity of the inner film fixed buckle. The stuffed nose cover achieves the effects of dust prevention, haze prevention, virus prevention, bacteria prevention and air pollution prevention, achieves the purpose of healing health protection through adding volatile solid medicines in the medicine applying cavity or dripping the volatile liquid medicines in the liquid diluting body, achieves a humidifying effect on the nasal cavity through dripping pure water in the medicine applying film or the liquid diluting body, and directly achieves the prevention and health protection effects on the rhinitis sicca.

The invention belongs to the technical field of agriculture and particularly discloses a fruit cleaning agent. The fruit-specific additive composition includes active ingredients accounting for 0.1% to 25% of the total weight of the additive composition and auxiliary agents accounting for 0% to 70% of the total weight of the additive composition, and the balance is fillers. The active ingredients are composed of Mesotrione and rimsulfuron-methyl, the weight ratio of the mesotrione and rimsulfuron-methyl is 1:10-80:1. The fruit-specific additive composition provides a convenient granule and effervescent granule to prevent and control weeds in fruits; the prepared granules have good control effect on weeds in fruits, and the combination with tetrazole Used in conjunction with rimsulfuron-methyl, rimsulfuron-methyl can effectively improve the killing effect of mesotrione on weeds, and can be directly thrown into the planting nursery or mixed with fertilizer.

The invention discloses a nanogold softener and a preparation method thereof. The nanogold softener is prepared from the raw materials in percentage by weight: 5-12% of a nanogold solution, 10-25% ofan active mesoporous silicate solution, 15-30% of a surface active agent, 2-5% of an emulgator, 0.1-1% of a stabilizer, 0.01-0.5% of a thickening agent, 0.01-0.5% of essence and the balance of water.The nanogold softener has triple advantages of sterilizing, wrinkle removing and environmental protection safety and is mild and non-irritating to human skins, and formaldehyde in textiles can be effectively removed.

The invention relates to a method for smelting magnesium metal, in particular to a method for smelting magnesium metal with the rare earth waste serving as a mineralizing agent. According to the method, the fluorine-containing mineralizing agent fluorite is partially or completely replaced, the influence of the fluorine-containing matter to the environment is removed, and the powdering problem of the magnesium slag can be solved. The method comprises the following steps of: feeding parched cerium oxide polishing liquid recovery material to replace the fluorite to be served as a new mineralizing agent to uniformly mix with the silicon iron and the calcined dolomite during the mixing and fine grinding process of the production raw materials of the magnesium metal; pressing the mixture into ball through an oil press under pressure of 15 tons; and then reducing in a reducing tank at a high temperature under a vacuum condition; heating the reducing tank to reach to the temperature about 1200 DEG C, and keeping the temperature; and condensing the magnesium steam at the cooling end of the reducing tank to obtain the crude magnesium under the sucking force of a vacuum system. The method is simple in technology and low in cost, and adopts the rare earth waste to replace the fluorite to smelt the new mineralizing agent.

The invention discloses a preparation method of bovine placenta, and belongs to the technical field of placenta preparation. In the whole preparation process of the bovine placenta, the activity of active ingredients of the bovine placenta is protected by means of temperature control homogenization, enzymolysis and the like, so that the conformation change of the active ingredients in the bovine placenta is effectively avoided, and the bovine placenta has relatively high activity; by adopting the means of centrifugation, filtration and ultrafiltration, impurities are removed, effective components are intercepted, and the produced bovine placenta is small in molecular weight and convenient to absorb by human bodies. The method provided by the invention is short in period, the produced bovine placenta is high in purity and high in activity, the main component is a small molecular peptide fragment, the peptide content of 100-1000Da reaches 95% or above, and 0.05 mg / mL of the bovine placenta can play a role in promoting proliferation of HFF-1 (human skin fibroblasts). The whole production process is pollution-free, free of toxic and side effects, low in cost and good in application prospect.

The invention relates to a method for preparing a porous membrane by virtue of a non-solvent induced phase method and belongs to the technical field of materials. The method comprises the following steps: doping a submicron-grade metal oxide by virtue of the non-solvent induced phase method so as to prepare hollow fiber, flat sheets and tubular membranes which have catalytic property, hydrophily and antibacterial property; preparing the materials in parts by weight: 15-30 parts of polyvinylidene fluoride resin, 0.1-10 parts of submicron-grade metal oxide, 10-80 parts of an additive, 0.1-10 parts of an organic salt dispersing agent and 40-70 parts of a solvent; and stirring the mixture of the materials at 25-80 DEG C, standing or carrying out vacuum defoamation, and spinning by virtue of the non-solvent induced phase method, so as to prepare the porous membrane having the catalytic property, hydrophily and antibacterial property. According to the method, one or more submicron-grade transition metal oxides are synthesized and added into casting film liquid, so that the hydrophily of the hollow fiber or the flat sheet membrane is improved, and meanwhile, the catalysis in the oxygenolysis of ozone and sodium hypochlorite into organic matters is achieved.

The invention belongs to the technical field of agriculture, and particularly discloses a special herbicide composition for melon planting and a preparation method thereof. The special herbicide composition for planting melons comprises 0.1% to 25% of active ingredients accounting for the total weight of the herbicide composition and 0% to 70% of auxiliaries accounting for the total weight of the herbicide composition, and the balance is fillers. The active ingredients are composed of mesotrione and rimsulfuron-methyl, and the weight ratio of the mesotrione and rimsulfuron-methyl is 1:10-80:1. The special herbicide composition for muskmelon planting provides a convenient granule and effervescent granule for controlling weeds in muskmelon planting; the prepared granule has good control effect on weeds in muskmelon planting , used in conjunction with rimsulfuron-methyl, rimsulfuron-methyl can effectively improve the killing effect of mesotrione on weeds, and can be directly thrown into the planting nursery or mixed with fertilizer.

The invention discloses a method for constructing a plant community for the ecological prevention and control of agricultural non-point source pollution with myrtle as the dominant species. The agricultural non-point source pollution ecological prevention and control plant community constructed by the present invention can effectively increase the surface runoff time by 1.1-1.5 times, and can reduce suspended solids by 46.3-65.7%, 46.3-65.7%, and The total nitrogen is 41.8-20.3%, and the total phosphorus is 22.6-30.9%, which can effectively prevent and control non-point source pollution, and at the same time have good landscape aesthetic functions and obvious ecological benefits. The method of the invention is simple and easy to implement, and the construction cost and operation cost are both low. The method of the invention provides a new approach for ecological prevention and control of non-point source pollution, and is suitable for popularization and application in the fields of ecological prevention and control of non-point source pollution, water environment protection and the like.