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58results about How to "Inhibition of overgrowth" patented technology

Sewage treatment system and method for combined tidal flow artificial wetland

The invention discloses a sewage treatment system for combined tidal flow artificial wetland, belonging to the technical field of sewage treatment. The system comprises a non-powered automatic water charging device (9), an artificial wetland bed and a non-powered automatic water discharging device (2), wherein the non-powered automatic water charging device (9) is positioned above the artificial wetland bed and is communicated with the artificial wetland bed through a siphon water inlet pipe (10); the artificial wetland bed is provided with a water discharging layer (5), a denitrification reinforcing layer (7), a reinforcing reaeration layer (8) and an aerobic ecological sand layer (17) from the bottom up; and the non power automatic water discharging device (2) and the artificial wetlandbed form a connector and are connected with each other through the bottom water discharging layer (5). The invention further discloses a sewage treatment method using the system, comprising two stepsof waterflooding absorption and emptying reaeration. Compared with the traditional combined wetland, the sewage treatment system for the combined tidal flow artificial wetland increases daily sewage treatment amount and reduces construction cost.
Owner:CHINA AGRI UNIV

Growth promoter for aquatic in aquaculture pond

The invention relates to an aquaculture pond float grass growth-promoting agent, belonging to the aquaculture technical field. The compositions in percentage by weight of the growth-promoting agent are: 4 to 6 percent of alpha-naphthylacetic acid, 15 to 20 percent of potassium sulphate, 0.4 to 0.6 percent of EDTA iron chelate, 0.4 to 0.6 percent of EDTA copper chelate and 74 to 80 percent of pure water, wherein pure water is heated up and then alpha-naphthylacetic acid is added in and dissolved in the pure water; when the solution is cooled down, potassium sulphate, EDTA iron chelate and EDTA copper chelate are added in and stirred evenly so as to obtain a finished product. The aquaculture pond float grass growth-promoting agent is free from the influence of environmental conditions and has convenient use and low application amount which is only 1 KG for every mu of water surface and every meter in depth; when used, the growth-promoting agent has quick returns and stable effects, and can quickly promote the growth of the float grass in a pond so as to reduce the content of nitrogen and phosphorous in water and to improve the environmental quality of the pond and the survival conditions of aquaculture organisms; therefore, the growth-promoting agent can effectively prevent aquaculture organism diseases and paroxysmal death, and increases the output and the quality of aquaculture organisms.
Owner:FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI

Sewage treatment system and method for combined tidal flow artificial wetland

The invention discloses a sewage treatment system for combined tidal flow artificial wetland, belonging to the technical field of sewage treatment. The system comprises a non-powered automatic water charging device (9), an artificial wetland bed and a non-powered automatic water discharging device (2), wherein the non-powered automatic water charging device (9) is positioned above the artificial wetland bed and is communicated with the artificial wetland bed through a siphon water inlet pipe (10); the artificial wetland bed is provided with a water discharging layer (5), a denitrification reinforcing layer (7), a reinforcing reaeration layer (8) and an aerobic ecological sand layer (17) from the bottom up; and the non power automatic water discharging device (2) and the artificial wetlandbed form a connector and are connected with each other through the bottom water discharging layer (5). The invention further discloses a sewage treatment method using the system, comprising two stepsof waterflooding absorption and emptying reaeration. Compared with the traditional combined wetland, the sewage treatment system for the combined tidal flow artificial wetland increases daily sewage treatment amount and reduces construction cost.
Owner:CHINA AGRI UNIV

Acidification control method for anaerobic fermentation of organic refuse

The invention relates to an acidification control method for anaerobic fermentation of organic refuses. The organic refuses of different concentrations are fermented through different fermentation concentrations, different amounts of inoculum and different anaerobic fermentation devices by using different treatment methods, the appropriate biogas slurry backflow concentration is adopted, an alkali production promoting bacterium agent is added to achieve the appropriate condition for fermentation of the refuses, the condition that whether acidification is conducted or not is judged through the pH value and the ratio TIC to VFA in the fermentation process of the refuses, and through the adjustment of simple technical measures, the acidification state of the system is guaranteed to be adjusted in time, and the organic refuses are normally fermented. The pertinence of the method is strong, the microbial flora in the anaerobic fermentation process of the organic refuses is adjusted through the method for combining the microbial technology and the technical skills, the technical problems of fermentation deterioration and aerogenesis delay, caused by the accumulation of organic acids, are solved, and the anaerobic fermentation efficiency of the refuses and the biogas output are improved.
Owner:INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI

Preparation method of microbial preparation for treating water pollution

The invention relates to the technical field of water pollution control, and discloses a preparation method of a microbial preparation for treating water pollution. The preparation method comprises the following steps: 1) 10-15 parts of denitrifying bacteria, 10-15 parts of nitrifying bacteria, 10-15 parts of white rot fungi and 8-10 parts of bacterial algae are sequentially taken, and are placedin a stirring container, 50-100 ML of water is taken and is poured into the stirring container, and the obtained liquid in the stirring container is heated and stirred until all the materials in the stirring container are completely fused for later use; and 2) 3-5 parts of a biodegradation aid and 3-5 parts of an organic pollutant decomposition agent are sequentially placed in the stirring container in step 1), and all the above materials are stirred until sufficient mixing in order to prepare a microbial mixed solution. The adding the denitrifying bacteria, the nitrifying bacteria, the whiterot fungi and the bacterial algae are added in the preparation method of the microbial preparation for treating water pollution, so the microbial preparation can effectively reduce harmful componentsin the polluted water source and improve the recycling of the water resources, and is conducive to saving the resources.
Owner:扬州海瑞克生物技术有限公司

Novel non-polluting water purification agent formula and preparation method thereof

The invention discloses a novel non-polluting water purification agent formula and a preparation method thereof. A water purification agent is prepared from the raw materials such as water-soluble silicon, Chinese herbal medicine extracts, magnesium silicate, activated carbon, sulfate, sodium chlorate, ammonium bicarbonate, chlorine dioxide, polymerized aluminum chloride, chitosan and polymerizedaluminum-iron phosphate through a series of process steps. When the water purification agent is applied into water, shock waves can be generated, thus impurities in the water are effectively dissolved, meanwhile, the concentration of dissolved oxygen is increased, sufficient oxygen is provided, and thus the growth and development of fishes and shrimps are facilitated; no toxic substance exists, sterilization can be effectively conducted, the toxic effect on a human body is also avoided, and safety is high; and after the water purification agent is applied, excessive multiplication of algae inwater bodies can be effectively inhibited, the eutrophication state of the culture water bodies is improved, the significant effect is achieved on repairing the water environment of a culture system,a good water area ecological environment can be created for high yield and efficient culture of the shrimps, the growth of the fishes and the shrimps is promoted, and the quality of the fishes and theshrimps is improved.
Owner:王忠厚 +3

Method for realizing tissue culture on asparagus

The invention relates to a method for realizing tissue culture on asparagus. The method is characterized by comprising the following steps of: selecting healthy asparagus plants in a field, cutting a long branch provided with stem tips; sterilizing and then inoculating the long branch propagation culture medium; firstly culturing in a dark place, then carrying out lighting culture and propagation; transplanting an asparagus single strong seedling obtained by propagation into a rooting culture medium to be cultured, after a root is grown, cutting the root, and then transplanting the strong seedling into a rooting culture medium II to be cultured; and finally dipping the root in solution containing bacillus mucilaginosus and streptomyces microflavus Beijing subspecies, transplanting the root into a pot filled with sandy soil, and culturing for 20-30 days under the condition of natural illumination, thus a survival asparagus seedling is obtained. In the invention, a two-steps rooting method is adopted, and activated carbon with appropriate concentration is added to improve the rooting rate of asparagus; and in the seedling transplanting process, the root is dipped the solution containing bacillus mucilaginosus and streptomyces microflavus Beijing subspecies, thus the survival rate of transplanting is improved.
Owner:LIANYUNGANG ACAD OF AGRI SCI

Organic microsphere with blue-green alga removing function and preparation method thereof

The invention discloses a preparation method of an organic microsphere with a blue-green alga removing function. The preparation method comprises the following steps: (1) dissolving sodium alginate and polyglutamic acid in water; (2) putting 0.15 g of graphene oxide into 50 ml of deionized water, adding the formed solution into a mixed solution of sodium alginate and polyglutamic acid obtained inthe step (1), and adding diatomite and bentonite; (3) dropwise adding a mixture obtained in the step (2) into a calcium chloride stationary liquid, carrying out a reaction for 30-120 minutes, and carrying out washing with deionized water 2-3 times for later use after the reaction is finished; (4) treating a solid substance prepared in the step (3) for 10-30 minutes under the condition that a microwave power is 600-1200W so as to obtain an organic microsphere; and (5) putting the organic microsphere into a blue-green algae removal microbial inoculum, and conducting standing for 5-10 hours to obtain the organic microsphere with the blue-green alga removing function. The organic microsphere is capable of reducing the sunlight irradiation amount of a water body and inhibiting excessive propagation of blue algae, moss and the like in the water body.
Owner:无锡泓宝微生物科技有限公司

Low-energy-consumption sewage treatment method for removing nitrate by utilizing alga photosynthesis

The invention discloses a low-energy-consumption sewage treatment method for removing nitrate by utilizing alga photosynthesis, and belongs to the technical field of nitrate removal sewage treatment.The low-energy-consumption sewage treatment method comprises the following specific steps: high-nitrate-resistant denitrifying bacteria are domesticated and prepared; then, high-nitrate sewage and returned activated sludge enter an aeration tank together to form a mixed solution in the aeration tank, organic matters in the high-nitrate sewage are in full contact with the high-nitrate-resistant denitrifying bacteria, and the high-nitrate-resistant denitrifying bacteria treat the high-nitrate sewage; and alga plates attached with alga plants are fixedly mounted on the peripheral side walls of the inner cavity of a sedimentation tank, an environment suitable for the growth of alga plants is built in the sedimentation tank, in the growth process of algae, nitrate and other substances in seawater are absorbed through photosynthesis, nitrate is decomposed into nitrogen and oxygen to reduce the concentration of nutritive salt in seawater. The nitrate purification is achieved through photosynthesis of algae, and the nitrate absorption and purification efficiency is high.
Owner:汕头市科恒环保科技有限公司

Ensiling method for improving yield of methane produced through anaerobic fermentation of straw

The invention provides an ensiling method for improving the yield of methane produced through anaerobic fermentation of straw. The ensiling method comprises the following steps that the newly harvested straw is smashed into the length of 0.5-3.0 cm; an ensiling additive A is sprayed to the smashed straw, uniform stirring is conducted, and silage stock is obtained; the uniformly prepared silage stock is placed into a silage pit in layers; the method for filling the silage stock into each layer comprises the steps that each layer is filled with the straw with the thickness of 30-60 cm, the strawis compacted, and an ensiling additive B is uniformly sprayed on the upper surface of the straw; after filling of the silage stock is completed, sealing is conducted to form an anaerobic environment,closed storage is conducted for 30-90 days at the natural temperature of 5-25 DEG C, and ensiled straw is obtained, wherein the ensiling additive A is a calcium peroxide solution, and the ensiling additive B is an ammonium hydroxide solution. By means of the ensiling method, the straw can be prevented from being mildewed and decayed, loss of nutrients in the straw is reduced, and the yield of themethane produced through anaerobic fermentation of the straw is effectively improved.
Owner:HEBEI UNIV OF TECH
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