597 results about "Food chain" patented technology

The invention comprises a composite microbial agent applicable to efficiency enhancement of common chemical industry sewage treatment systems. The composite microbial agent applicable to efficiency enhancement of the common chemical industry sewage treatment systems meets the demands on treatment on comment pollutants in existing chemical industry and environmental production as well as on establishment of functional bacteria required by a stable bacteria flora. According to one of the schemes, the composite microbial agent is composed of 108 microorganisms of three major functional types. When the composite microbial agent is added together with microbial growth promoting carriers, nutrient agents and the like into a biochemical system, the composite microbial agent can promote establishment of a complete food chain in the biochemical system through various microorganisms with special pollutant degrading capabilities and comprehensive metabolic manners to enhance utilization and metabolic decomposition of pollutants in sewage through the microorganisms, thereby achieving efficient reduction of COD (chemical oxygen demand), ammonia nitrogen, phosphorous, sulfur and like.

The invention discloses a method for removing water eutrophication, which comprises the following steps of: investigating a community structure of aquatic organisms in water body, and finding a missing link or broken link in a food chain according to an investigation result; stocking predacious fishes in the water body, removing small trash fishes and herbivorous fishes from the water body by adopting a medicament mode or a manual fishing mode, and regulating the community structure of the fishes in the water body; planting submerged plants, floating plants and emergent aquatic plants in the water with the depth of 0 to 1.5m; and stocking filter-feeding fishes, filter-feeding shellfishes, detritus feeding benthonic animals and herbivorous fishes in the water body. The method for removing water eutrophication can realize the removal of the water eutrophication and ecological restoration for large-scale water body of which the parameters cannot be manually controlled, effectively inhibit the outburst of algal bloom and keep the stable quality of the water body.

The invention discloses an ecological restoration and purification method for landscape water environment which is characterized by comprising the following steps of (1) performing bottom mud sterilization and activation treatment; (2) splashing a microbial flora compound preparation; (3) reconstructing a submerged communities; (4) repairing an aquatic ecosystem food chain; and (5) performing aquatic ecosystem conservation management. According to the ecological restoration and purification method for the landscape water environment, a biological integrated control technology is applied, and the water purification effect is achieved by use of submerged plants; furthermore, decomposers, namely microorganisms in an ecosystem are fully utilized, and multiple types of aquatic animals are put in the aquatic ecosystem, so that the ecosystem food chain is perfected, various aquatic species promote and restrict one another, the whole riverway, lake, pond and wetland system is kept in dynamic balance for a long time, the original self-purification capability of the aquatic ecosystem is restored, and a long-term stable effect is achieved.

Provided is a recycle mixing type rice field culture method. According to the method, a rice field and fresh water resources are utilized for culturing. The method comprises the following steps of arrangement of the rice field, installation and adjustment of facilities, disinfection of the clean field and water fertilizing, rice planting, loach and Chinese soft shell turtle stocking, edible frog throwing, loach and edible fog harvesting, rice harvesting, water entering to flood the field, freshwater shrimp autumn seedling stocking, freshwater shrimp multiple fishing and coming into the market of freshwater shrimps, freshwater shrimp and Chinese soft shell turtle capturing, and ploughing and field drying, wherein the arrangement of the rice field comprises the excavation of culturing ditches, and trimming of field ridges. By the adoption of the method, rice-fish culture and freshwater shrimp autumn seedling and Chinese soft shell turtle mixed culture are organically and cyclically combined, the problems that an empty rice field in winter is not utilized, a water-phase food chain is simple, the mutually beneficial level of rice and fish is low and the bird prevention and the pest removal are low are solved thoroughly, the recycle and safe and efficient output of the rice field are ensured, the significant increasing of the benefits of rice field culture is achieved, and the method has the advantages that the culture process is easy to operate, the culture cost is low and the culture safety is high.

The invention provides a broad spectrum heavy metal activity deactivator preparation method. The present invention relates to a soil conditioning agent preparation method, which comprises the following steps: (A) taking humic acid-rich peat, digest compost or a forest soil humus layer, and carrying out screening to provide a spare use; (B) adding the humic acid-rich material to HCl or HNO3 to soak, and stirring 2-3 times; (C) filtering the soaked material with a bamboo drying pad, washing 2-3 times with clear water, and carrying out air drying to a moisture content of less than 5%; (D) sequentially adding ZnSO4.7H2O, sodium silicate and sodium selenite to the material obtained from the step (C), carrying out aging on the mixed material for 2-3 days and uniformly mixing; and (E) adding limestone powder to the material obtained from the step (D), and completely and uniformly mixing to prepare the broad spectrum heavy metal deactivator. With the combination inhibitor prepared by the preparation method, activities of soil heavy metals can be significantly inactivated, the heavy metals can be inhibited from entering the food chain, and risks on human health by the heavy metals can be reduced.

The invention relates to an ecological restoration and purification method for water of lake and pool wet land. The method is characterized by comprising the following treatment steps sequentially: a first stage, a second stage and a third stage, wherein the first stage comprises the steps of pumping the water of the lake and pool wet land to dryness sectionally, performing activity, disinfection and dehydration treatment on sludge of the lake and pool wet land, prefabricating and mounting a submerged aeration facility, planting a submerged vegetation community, and filling in the water of the original lake and pool wet land; the second stage comprises the step of putting water purification bugs into the water for treating suspended matters in the water and purifying the water, such as algae and detritus; and the third stage comprises the steps of planting floating-leaved plants in the water, and configuring aquatic animals capable of eating partial aquatic plants for restoring a food chain of a water ecosystem. The method can ensure that the restored or purified water can reach a Category III or above primary indicator of Environmental Quality Standards for Surface Water (GB 3838-2002); the water purification effect is enduring; and both a symptom and a root cause are treated.

The invention discloses a method and system for real-time online evaluation of off-site results of nuclear facility accidents, and belongs to the technical field of nuclear facility accident result analysis. The method comprises a wind field prediction method of a simulation area, a wind field diagnosis method, a Lagrange puff atmospheric diffusion simulation method, an estimation method of gaseous radionuclide-caused radiation dosages and prevention measures, and an airborne passing food chain radioactivity estimation method. Through the method and system provided by the invention, the wind field prediction and diagnosis, and the contaminant atmospheric diffusion simulation and radiation dosage estimation of a plurality of accident points from the happening of a nuclear facility accident to the end moment in a simulation area range which takes a nuclear facility as a center can be completed, so that result evaluation data basis is provided for the accident emergency command processing after the nuclear facility accident.

The invention relates to a soil-acidification-resistant organic fertilizer additive and a preparation method thereof. The additive is prepared through the steps of mainly using zeolite powder, low-grade calcium magnesium phosphate fertilizer, waste resource shells, calcium silicon powder and humic acid powder as raw materials, mixing, fermenting, curing, drying, crushing and scientifically combining and mixing with spray-dried embedded functional composite microbial agent microcapsules. After organic fertilizers added with the additive are applied into acid/acidified soil, the physical fertility, the biological fertility and the chemical fertility of the soil can be improved and the acid resistance of the soil is improved. The additive and the fertilizer with the additive are safe, effective and highly functional. The application of the additive removes the threat of acid/acidified soil to the agricultural production, the ecological environment and the human health from the angle of nutritionists of a food chain.

The invention discloses a method for producing selenium rich agricultural product, which comprises following steps: spraying selenium rich solution onto plant leaves, diluting said selenium rich solution into solutions with different concentrations, then spraying it onto leaves, converting inorganic selenium into organic selenium by employing special technology in grain, vegetable and fruit, providing selenium for human body through food chain. The invention is characterized by simple and easy operation, high selenium availability ratio, low cost, selenium rich crop of 80-235 ug/ kg.

The invention discloses a method for treating wastewater by utilizing a composite microbial preparation, which comprises the following steps of: putting the composite microbial preparation in an amount of 0.15 to 0.3 percent based on the treatment volume of a biochemical basin into the biochemical basin, and putting diatomite in powder or powdery activated carbon in an amount of 1 to 2 percent based on the volume of the basin into the basin. Through the method, the composite microbial preparation and an activated carbon filler can be directly put and added into the biochemical reactor once, thereby effectively promoting the establishment of an entire food chain of a microbial system and the complete degradation of various pollutants, promoting microbes to utilize nutrient substances in water and realizing the high-efficiency removal of the pollutants, such as organic matters (CODcr), ammonia nitrogen and the like.

The invention discloses an ecological high-yield circulating breeding system and method. The system is characterized by comprising a plurality of fish breeding pools (1) of the area ranging from 200 square meters to 700 square meters, a sealed greenhouse (2) is arranged on the fish breeding pools, an air inlet is formed in one end of the greenhouse, an air supply device (3) is additionally arranged on the air inlet, an air outlet is formed in the other end of the greenhouse, natural water drainage openings (6) are formed in the bottoms of the fish breeding pools, and water supplementing pumps (4) are installed on the periphery of the fish breeding pools and are communicated with a circulating water source (5). By means of the system and method, the green ecological circulation is achieved, no chemical medicine is used in the whole system or the whole breeding process, full-food-chain recycling is achieved for waste water and excrement produced during fish breeding, the commercial high-yield breeding that 50,000 kilograms of snakehead and 25,000 kilograms of bass are produced per year can be achieved, grass carp, chub, yellow catch eel and other high value-added aquatic products can be produced, and meanwhile, completely-green organic rice, fish, shrimp, crab and other by-products high in economic value can be produced in paddy fields.

The invention discloses an ecological organic fertilizer for restoring soil balance. The fertilizer is an organic, inorganic, carbon-based and microbial integrated fertilizer capable of restoring ecological balance of soil, and increasing yield of crops. The fertilizer is prepared from the following components: 20%-32% of urea, 15%-25% of monoammonium phosphate, 15%-22% of a carbon-based fertilizer, 20%-30% of potassium chloride or potassium sulfate, 3%-5% of vegetable organic matters, 3%-8% of biological humic acid, 2%-5% of biological amino acid, 1%-3% of medium and trace nutrients and 1%-2% of beneficial biological bacterium. The physical characteristics of soil can be improved after the ecological organic fertilizer is continuously used; the ecological organic fertilizer especially has a good effect on soil adopting straw manure for many years, the surface area of the soil is increased, the soil structure is loose, lots of silk fossa-shaped structures are formed and the soil hardening is alleviated; a food chain of earthworm is restored by humus generated by combination of a lot of beneficial microorganisms and organic matters (including straws) in soil; and the ripping expert (earthworm) turns back to the farm, so that the ability of soil in regulating and controlling water is increased; and the drought resistance and the flood resistance of the crops are significantly improved.

A field-like ecological livestock farm comprises fences, wherein an open cultivation zone and an incubation zone are arranged inside the fences; in the open cultivation zone, cultivation ridges and bait cultivation ditches are arranged alternately; and the incubation zone is provided with a plurality of breeding jars. The cultivation ridges are higher than the ground plane, the cross section of each cultivation ridge is trapezoid, tiles or bricks are arranged at the tops of the cultivation ridges, and gaps are reserved among the tiles or bricks. The field-like ecological cultivation farm and a field-like ecological cultivation method have the following characteristics that; the cultivation method is based on the combination of main food comprising high protein foods and meat and complementary food comprising insects in the food chain such as earthworm, Tenebrio molitor L. and/or ground beeltle; the cultivation farm meets the field life habit of centipede, thus the disease resistance of centipede can be greatly increased and the growing and breeding speed of centipede can be accelerated; and the adult has good drug property, high efficacy, good quality and high market price.

A method for harnessing, recovering and utilizing ecological farm is carried out by centrifugalizing out marsh slag and marsh liquid from marsh gas in livestock and fowls farm, sterilizing for marsh liquid, filtering by water, selecting chlorellin algae, expanding while culturing, raising fish and algae, inspecting while preventing pest diseases, collecting, recovering clear liquor, utilizing by livestock and fowls farm, extracting algae mud from algae liquor, mixing with feed, returning farm for animals and fowls, inoculating while fermenting, mixing fermented algae bacterium nutritive liquid with feed for animals and fowls, or extracting algae mud from algae liquor, spraying and drying to obtain algae powder health-care food. It creates 'animals-fowls-marsh-fish-algae-bacterium' symbiotic food-chain circulation and ecological balance system.

The invention belongs to the technical field of the animal husbandry, and particularly relates to an ecological Liancheng white duck raising method. The white duck raising fields are hillsides and forest lands, such as the mountain stream, the sloping field, the paddy field and the fishpond. The mountain stream penetrates the sloping field to enter the paddy field, and then flows towards the fishpond, and a duck coop is built next to the fishpond. The periphery of the raising field is planted with tall and dense rank vegetation to form biological rails, and the different functional regions are divided by the biological rails. The region with the same function comprises a lawn grazing district, a paddy field grazing district and a fishpond grazing district. The quality of the white ducks produced by the method is better, and the ecology and the water resources can be prevented from being damaged. Different small ecological environments of the functional regions of the white duck raising fields have own characteristics, are intimately connected and mutually supported, and provide favorable ecological environment and abundant food chains for the growth of the white ducks. The method realizes the scientific raising of the white duck, high production quality, zero emission of sewage and dirt; and the ecological raising of the white duct can sustainably develop and create more obvious economic, social and ecological benefits.

The invention provides an ecologically adjustable fish reef ecological floating bed device. The device comprises a floating bed frame, a plurality of fish reef module units and aquatic plants, wherein each fish reef module unit is connected with one another and fixed by the floating bed frame and comprises a grid and an organism ceramsite layer, a fish reef channel layer and a packing layer which are arranged from top to bottom sequentially and are separated from one another by interlayers; the grids surround around the organism ceramsite layers, the fish reef channel layers and the packing layers and the bottoms of the packing layers respectively; fish reef passages are respectively opened around the fish reef channel layers; holes are opened at the position, corresponding to openings of the fish reef passages, of the grids to make the fish reef channel layers communicate with outside; and the aquatic plants are arranged on the organism ceramsite layers. The device can ensure the normal growth and prevent the overgrowth of the aquatic plants at the same time; and meanwhile, a simple food chain of 'organisms-planktons-fishes' is formed inside the device to improve the purifying capacity of water of the device.

The invention discloses a compound microbiological preparation and application thereof in the waste water treatment. Strains adopted by the invention can be conveniently obtained from a natural world by technicians in the field according to the conventional strain identifying and separating method, or can be publicly purchased by a commercial channel. All culture solutions and microbial carriers are mixed according to a certain proportion to obtain the compound microbiological preparation. The compound microbiological preparation disclosed by the invention contains 38 strains; the compound microbiological preparation can be directly fed in a biochemical reactor at one time, so that the establishment of a complete food chain in a microbial system can be effectively promoted, the utilization of microorganisms for nutrient substances in water is promoted, and high-efficiency removal of polluted substances such as organic pollutants (such as benzene ring halogenated compounds), ammonia, nitrogen and the like is realized. The compound microbiological preparation is suitable for biochemical treatment of waste water which is high in salt content, contains heterocyclic aromatic hydrocarbons and is difficult to degrade.

The invention discloses a planting method of a spinage rich in iodine, comprising the following steps: 1) a good-qualified variety is selected and the spinage seed is peeled and placed in cold water which is replaced for one time, exposed in low temperature of four to five Celsius system for sprout acceleration after being immersed and is planted after the seeds sprout; 2) fertile soil block of good temperature and water conservation is selected, carefully plowed and harrowed. Seeds with sprouts are widely distributed or planted in rows on the bed surface, seedlings are thinned after coming out at the place where seedling are too close to each other to keep the sol wet; 3) basic fertilizer is applied before spinage is planted, solid iodine organic fertilizer is applied on the soil surface at one time or liquid iodine fertilizer is periodically sprayed before spinage is picked. Owning to the adoption of the invention, not only spinage containing iodine can be nursed, but also the iodine fertilizer left in the soil and the spinage root rich in iodine can increase the iodine background content in the soil and the surroundings so as to gradually improve the environment in the area short of iodine and enhance the iodine content in food chain.