98results about How to "Play the role of purifying water quality" patented technology

The present invention relates to a high-effective compound flocculating agent, its preparation method and application. Said flocculating agent is composed of flocculating agent and coagulant aids, in which the flocculating agent mainly is polymeric aluminium iron or polymeric aluminium, and the coagulant aids mainly have two classes, one is inorganic compound, for example sodium silicate, calcium hydroxide, calcium carbonate, magnesium hydroxide and high-molecular coagulant aids, and another is organic substance, for example polyacrylamine, dodecyl dimethyl tertiary amine, dicyandiamide and modified chitosan. It can be used for treating dyeing waste water.

The invention discloses an ecotype enclosed method for culturing fish through circulation water. Natural seawater, underground salt water, underground fresh water and geothermal water are mainly utilized and mixed, and an industrial culture foundation for producing pollution-free healthy seafood is built and used. A solid-liquid separation purification device is used for replacing sand filtration of a biological filter, ammonia nitrogen and nitrite nitrogen are degraded after water passing through a biological film on biological filler in the biological filter, and the total purification rate of water body particles is over 99%. An aeration pond is arranged to conduct aeration and oxygenation on a culture water body to enable the content of dissolved oxygen in water in a fish culture pond to be kept at 8-14mg / L, finally the water body is sterilized through ultraviolet light, clean ecological water is input into the fish culture pond, and the return water in the fish culture pond is purified repeatedly and utilized in a circulating mode. Sewage discharged from a culture system is purified by an open-air pond and flows back to a water storage sedimentation pond to achieve zero-discharge complete enclosed circulation water factory-like fish culture.

The invention provides an aquatic plant fixing device for repairing water and bottom mud, and belongs to the field of a water pollution recovery technique in environmental protection. The device comprises a submerged plant fixing frame, two floating frames, a nylon net, an ecological floating plate, a sliding rail, a connecting rope and a plant growth substrate, wherein the frames are used for including emergent plants, floating plants and submerged plants into a same system, the frames are connected through a connecting rope to form a triangular stable structure, two floating frames are used for respectively planting the emergent plants and the floating plants, a submerged frame is connected with a submerged plant growing substrate, the water and the bottom mud are repaired by the submerged plants, microbes are doped in the submerged plant growing substrate to promote the plants to absorb and convert pollutants to realize microbe-plant combined repair. According to the aquatic plant fixing device provided by the invention, the optimization of types of plants and space structure can be realized, environment can be beautified, and water quality can be purified; meanwhile, the water and the bottom mud can be repaired, and more thorough and effective repair can be realized.

The invention provides an ecological cycling freshwater aquaculture method. The method comprises: preparing a culture water source, supplying water to culture ponds, filtering water, and treating sewage. The plurality of culture ponds are arranged from left to right in sequence to form a culture pond group. The culture ponds in the culture pond group are connected in parallel, and form a recirculating aquaculture system with a filter tank, a treating pond, a settling pond, a biological package, an aeration tank, and a sterilization pond. Using the ecological cycling freshwater aquaculture method, water of the whole system forms virtuous cycle, and is suitable for growth of freshwater fishes and shrimps, and zero discharge of aquaculture wastewater is realized, and water resource is saved. The ecological cycling freshwater aquaculture method has obvious ecological environment benefits, and meets the sustainable development strategy of the country.

This invention belongs to environment protection technique field, which concretely relates to a multifunction nitrification anti-nitrification integrated self-generation dynamic state membrane bioreactor. This reactor is cartridge structure, which is made up of half aerating reacting region, aerating reacting region, and fore treatment reacting region from top to inferior surface. Fore treatment reacting region loads bulking agent. It can change reaction style (anaerobic or aerobic) with different water quality; self-generation dynamic state membrane components are in half aerating reacting region; recirculation of recirculation equipment is no apposition dynamia recirculation, and depends on filament band dynamia generated by weight and inletting water pump. This invention overcomes known membrane components of membrane bioreactor is of high cost, not easy to clean membrane pollution, high energy expenditure of recirculating pump and aerating. It has advantages of good water quality, multifunction, using little ground, convenient to use. It is suitable for processing industrial sewage and domestic sewage.

The invention discloses a yellow seahorse seedling artificial cultivating and farming method, belonging to the technical field of aquaculture. The method comprises the following concrete steps of: feeding yellow seahorses with proper larvae or adults of moina mongolica and mysis or post larvae of litopenaeus vannamei according to the body length of newly-hatched young yellow seahorses and yellow seahorses in a farming process; and when the young yellow seahorses grow to 2.5-3.0cm, simulating an ecological environment condition of the yellow seahorses in a natural sea area, and supplying sargassum or eucheuma for the yellow seahorses to twine and perch. According to the method disclosed by the invention, fed baits are artificially cultivated, have rich nutrition and can be obtained stably, and can not be influenced by weather and seasonal effects; fed twining objects can promote the self growth by use of harmful substances in the farming environment, sufficiently reduces the content of the harmful substances in water, realizes an effect of purifying the water quality, reduces diseases of the yellow seahorses, and improves the survival rate and the released density. The method disclosed by the invention is easy and convenient to operate and has an obvious effect.

The invention belongs to the field of aquaculture, and particularly relates to distribution of an environment-friendly aquaculture farm, which includes a fish culture area, a river crab culture area and a tail water purification area from the upstream to the downstream. Tail water from the fish culture area is drained to the river crab culture area, the tail water from the river crab culture area is drained to the tail water purification area, and water from an outlet of the tail water purification area is then diverted into the fish culture area. The water in the river crab culture area can also be diverted into the fish culture area directly, and the water in the fish culture area can also be diverted into a primary purification tank in the tail water purification area directly. By using the distribution, the area of the tail water purification area can be reduced, the quality of river crabs can be improved, and recycling of culture tail water and nutrient pollutant can be achieved.

The invention relates to a calcium peroxide preparation used for water fast oxygenation and a preparation method thereof which belong to the technical field of water quality treatment and are used for solving the problem that the prior calcium peroxide product has slow oxygenation effect and is not easy for applying. The technical proposal is as follows: the preparation is made from the raw materials with the weight portions as follows: 60 to 80 portions of calcium peroxide, 0.5 to 4 portions of adhesive, 10 to 20 portions of stabilizing agent, 0.2 to 2 portions of parting agent and 10 to 20 portions of exciting agent. The invention has the obvious advantages as follows: 1. the invention can increase the oxygen content of water fast, improve the water quality, eliminate pathogenicbacteria and deodorize; 2. the product can subside to the bottom of the water after being put into the water, increases the oxygen content of the water completely and also can disinfect the water from bottom to top; 3. the product has good stability and long shelf life and is not decomposed easily under normal state, the effective period can be more than one year; and 4. the invention has simple operation, is convenient for using and is safe and effective.

Aquaculture net cage antifouling paint comprises the following components of zinc acrylate resin, diisononyl phthalate, nano-silver powder, nonanoic acid vanillyl amide, zinc pyrithione, algaecide preventol A6, 10-35 parts of zinc oxide by weight, wetting dispersant, anti-settling agent, talcum powder and an organic solvent. The invention further discloses a preparation method of the antifouling paint. Compared with the prior art, the antifouling paint and the preparation method thereof have the advantages that the compounded antifouling agent has complementary advantages, the existing antifouling agent system is widened, excellent killing property for a plurality of marine fouling animals and algae is brought, no poison and no residue properties are realized. An antifouling coating has certain flexibility, and improves the adhesion, the mechanical performance and the durability.

A high-density aquatic product transporting and breeding device comprises a fish tank, a water pump, a water purification system, a constant temperature system and an oxygenating system, wherein a water inlet pipe and a water outlet pipe are arranged in the bottom of the fish tank; the water inlet pipe and the water outlet pipe are connected through a pipeline to form a water circulating loop; and the water pump, the water purification system, the constant temperature system and the oxygenating system are arranged on the pipeline of the water circulating loop, wherein the water purification system comprises a hydraulic cyclone and a filter system or one of the two; the constant temperature system is a dividing wall type heat exchanger, and a heat exchange medium is a low-temperature fluid body or a high-temperature fluid body from a refrigerating unit; a liquid oxygen bottle is arranged on the oxygenating system, and liquid oxygen in the liquid oxygen bottle generates gaseous oxygen through a pressure reducing valve and inputs the gaseous oxygen to the oxygenating system; overflow holes and an overflow trough are formed on the fish tank, so that the content of body fluid proteins and fine impurities in live fish transporting and breeding process can be effectively reduced. The device provided by the invention can be used for transporting and breeding high-density live fishes and increases the quantity of fishes in the fish tank as more as possible on a basis of guarantee of survival fishes, so that the transporting and breeding cost is lowered.

The invention discloses an environment-friendly and high-yield breeding method for penaeus vannamei boone. The method is characterized by comprising the steps of previous-breeding preparation, culture of chaetoceros, adding of a carbon source, feeding and management, water quality monitoring and the like; before breeding, favorable chaetoceros is added to occupy an ecological niche; during breeding, the input ratio of feed to glucose is regulated, heterotrophic bacteria can be stimulated to absorb nitrogen and phosphorus metabolic waste for mass propagation, and then the function of water purification is achieved; by the adoption of a special siphon dirt collection device with an excellent dirt discharge effect, the method enables the water change frequency to be reduced to one time every seven days, and the water change volume is only 5%. The method has the advantages of being simple and controllable, remarkably reducing the feed conversion rate and water change cost and greatly increasing the yield and survival rate of the penaeus vannamei boone, thereby having good biological and economic benefits.

The invention discloses a column-shaped denitrifying reactor through integrated nitrated and denitrificated biological film method in the environmental protective technique domain, which comprises the following parts: water collecting system, aerating reacting region, anaerobic region and sediment region, wherein the aerating reacting region is full of suspension fill with aerating pipe on the bottom; the gas inlet and water outlet are opened on the bottom; the gas inlet connects aerating pipe with top opening interconnecting hole; the peole-shaped mud baffle board is set in the sediment region with hole on the top, which connects one end of gas collecting pipe; the other end of gas collecting pipe pierces the water collecting system; the mud drainage valve lies on one side of sediment region under the mud baffle board; the bottom of water collecting system possesses overflow dam with water drainage pipe on one side; the sampling valve is set around aerating reacting region and sediment region.

The invention relates to water conservancy bank protection buildings, in particular to a layered water landscape bank protection system. The layered water landscape bank protection system can integrate watercourse protection, river aquatic animal parasitism and plant landscape. The system is formed by staggered arrangement of a kind of concrete blocks layer by layer, namely blocks are arranged in parallel on the bottom layer of a watercourse along a river bank firstly, then blocks are piled on the bottom blocks in a staggered mode, adjacent layers of blocks are fixed with connecting rods, the rest is done in the same way till the blocks are piled on the top of the bank, and then the layered water landscape bank protection system is formed. A cylindrical gallery on the blocks can be filled with pebbles under the water surface to serve as a gallery for living of small aquatic animals, planting soil can be arranged above the water surface for green planting, and a fan-shaped gap between every two adjacent blocks can serve as a planting groove which is filled with planting soil for planting of aquatic plants. The layered water landscape bank protection system can protect and green the river bank, enables tourists to be close to the water surface, and plays an important role in creating watercourse landscape.

The invention discloses an intermediate aquaculture system for pinctada maxima. The intermediate aquaculture system comprises an outer ring slot and an inner slot formed by encircling the outer ring slot, wherein a communicating plate, a water level plate, a screen and a baffle are arranged in the outer ring slot; a clearance is reserved between the bottom of the communicating plate and the bottom surface of the outer ring slot; the water level plate and the baffle are plugged in the outer ring slot to form a filtering water chamber; the screen covers the top of the filtering water chamber and is inclined from the water level plate to the baffle; a sewage drain pipe is arranged at the lower end of the screen; an attachment device for attaching beneficial bacteria is arranged in the inner slot; a clean water outlet communicated with an aquaculture region is formed in the slot wall of the inner slot; water in the aquaculture region flows into the filtering water chamber after being filtered by the screen and then is extracted to the inner slot; by beneficial bacteria purification treatment, the water flows into the aquaculture region from the clean water outlet so as to realize water body circulation. The intermediate aquaculture system for pinctada maxima can be used for automatically purifying aquaculture water, so that the water quality can be kept in a good state for a long time; therefore the water change frequency is reduced, irritation to pinctada maxima stress is alleviated, and loss of bait algae along with water drainage is also reduced, so that the supply of baits is reduced, and the labor intensity is correspondingly reduced.

The invention discloses a use of Shewanella as a feed additive in the abalone culture. Shewanella (comprising WA64 and WA65 strains) has strong a capability of antagonism of abalone pathogenic bacteria and thus Shewanella can be used as a feed additive for abalone culture. The Shewanella as feed additive for abalone culture has the advantages that Shewanella promotes that juvenile abalones vie with pathogenic bacteria for adhesion sites, maintains a normal microecological balance of the intestinal canal, can colonize in the intestinal canal of an abalone, promotes nutrient absorption, improves immunity thereby improving a growth speed and disease resistance of a Haliotis discus hannai, can replace a chemical drug for disease treatment, and does not damage the ecological environment.

The invention discloses a hydraulic spray seeding matrix for slope ecological restoration. The hydraulic spray seeding matrix comprises, by weight, 60-85 parts of wood fiber, 2-8 parts of a water-retaining agent, 1-5 parts of a binding agent, 5-15 parts of organic fertilizer, 0.4-4 parts of a soil conditioner and 0.5-5 parts of a complex microbial agent. The soil conditioner is formed by calciningof at least one of clinoptilolite, sepiolite, attapulgite and crushed corncobs, and the complex microbial agent includes an antifungal agent, a cleansing bacterial agent and an azotobacterin which are mixed together. The hydraulic spray matrix is directly sprayed on the slope to form a matrix layer after mixture of seeds and water and can effectively reduce the amount of soil and purify water quality.

The invention provides a black odor water treatment method based on biochar immobilization composite microorganism treatment and an aeration reoxygenation system of the black odor water treatment method. The treatment method comprises the following steps: (1) surveying the river pollution profile, (2) performing source control and sewage interception, (3) performing aeration and reoxygenation treatment, (4) performing degradation and purification treatment by using a biochar immobilization composite microorganism system, and (5) performing comprehensive monitor and long-term dynamic assessment on the health of an urban river ecosystem. Input of energy materials is small, man-made management control is less, economical efficiency is achieved, and the cost is only 30-50% of the cost of a traditional environmental engineering technology. According to the immobilization composite microorganism ecological restoration technology, natural organisms or slightly modified organisms rather than artificial substances are utilized to purify sewage in rivers and lakes, the environmental compatibility is good, and no secondary pollution to the environment is caused; and the method can be combined with hydrophilic landscape construction, and the external forms are natural, and is more humanized.

The invention relates to a functional active purifying ceramic and a preparation method and an application thereof, wherein a functional active purifying ceramic blank material is prepared from the following components by the weight percentage: 13%-15% of quartz stone, 6%-8% of albite, 3%-5% of potassium feldspar, 5%-6% of medical stone, 5.9%-7% of a rare earth element, 2%-3% of borax, 47%-59% of clay, 1.5%-2.5% of barium carbonate, 2.1%-3.2% of spinel, and 2.5%-3% of cordierite. A functional active purifying ceramic glaze material is prepared from the following components by the weight percentage: 4%-5% of nanosilver, 4%-4.8% of tourmaline, 7%-8% of medical stone, 5.5%-6.5% of Muyu-stone, 11%-13% of negative ions, 2%-3% of a germanium powder, 2.3%-3% of borax, and 56%-65% of clay. The invention has the beneficial effects that the functional active purifying ceramic and the preparation method and the application thereof are provided, and the active purifying ceramic material can play a role in purifying water quality, and can purify water quality while playing a container role when applied in ceramic products, so as to achieve an efficacy of promoting human body health.

The present invention is an ecological culture method for polyculture of hippocampus and long-stem grape fern algae, which comprises the following steps: culture pool preparation: the culture pool is fully cleaned and exposed to the sun and then injected with filtered seawater, the seawater height is 1-1.2m; artificial ecological culture Pond construction: Environmental parameters of breeding pond: water temperature 26±3℃, salinity 32±3‰, PH8±0.2, COD6.8±0.2mg / l, light 6000‑9000lx, transparency 1.3±0.3m, PO 4 3+ ~P1.5±1mg / l, NO 3 + ~N8±2mg / l; polyculture of hippocampus and Botrytis elongatus: when the average body length of the hippocampus is 5cm, they are mixed with selected Botrytis elongatus in the culture pond for polyculture. The present invention constructs a circular ecological breeding system by stocking adult hippocampus and Botrytis elongatus in the breeding pond, so that each ecological niche and trophic level in the breeding pond has suitable breeding objects to adapt to it, avoiding bait waste and pollution.

The invention discloses an ecological mixed aquaculture method for bitterling and crayfish. The aquaculture method comprises the following steps of preparing a pond, preparing facilities, establishing an ecological environment, stocking the bitterling, stocking the crayfish, feeding baits, carrying out disease control and prevention, catching and harvesting. The invention provides a bait matching method for crayfish aquaculture; the bitterling and the crayfish are mixed in the same water body and water layer serving as natural live baits for ecological mixed aquaculture, so that the bait matching problem for the crayfish is solved, the environment is stabilized, and the purpose of healthy aquaculture of an ecological cycle is achieved. Through implementation of the invention, the method has the advantages of practical technology, low cost, environmental-friendly aquaculture and capability of effectively improving the yield and the composite economic benefit of the crayfish.

The invention discloses a rice field three-dimensional crab culture system. A crab culture rack is obliquely arranged in a culture pond, conveying devices are respectively arranged at two longitudinalends of the crab culture rack, a high-low inclined channel is arranged in the culture pond corresponding to the crab culture rack, the channel is arranged at a lower end of the top of the crab culture rack, an upright post is arranged on the channel, a cross rod is vertically arranged at the top of the upright post, an electromagnetic device is arranged at a free end of the cross rod, a magnet iscorrespondingly arranged on a crab culture box, a spraying and washing device is arranged on the upright post positioned below the electromagnetic device, a spraying port of the spraying and washingdevice is arranged at one side of the crab culture box; a rice planting base is also arranged in the culture pond; and the bottom of the upright post is provided with a transverse moving device. By the adoption of the rice field three-dimensional crab culture system, an industrial mass crab cultivation is realized, a symbiotic system of crab cultivation and rice planting is realized, the growth environment of rice and crab is effectively improved, and good practicability is realized.

The invention provides application of a whiteleg shrimp culture feed which is applicable to whiteleg shrimp at each stage. The application of the whiteleg shrimp culture feed is characterized in that the feed is mixed with water flea to feed young shrimps; the feed is mixed with water flea, alga and other live foods to feed the shrimps at the domestication stage; the whiteleg shrimp is completely fed with the feed after domestication. The whiteleg shrimp culture feed has the beneficial effects that the whiteleg shrimp culture feed is applicable to the culture of the whiteleg shrimp in each stage; the feed is prepared with the nutritional substances suitable for the growth of the whiteleg shrimp; the nutritional structure is reasonable; the growth promoting effect is obvious; the culture period is reduced; the immunity of the whiteleg shrimp can be improved; the prevalence rate can be reduced; moreover, the calcium can be absorbed well; the soft-shell shrimp is greatly reduced; the whiteleg shrimp at each stage is high in stability, high in utilization rate, and small in deposit at the bottom of a pool after being launched; the content of organic nitrogen and phosphorus in water can be effectively decreased, and the water purifying effect can be achieved, therefore, a good living environment is provided to the whiteleg shrimp.

The invention provides an ecological environment wetland protection device. The ecological environment wetland protection device comprises a protection floating body and a fixing device for fixing thefloating body. A protection net is arranged on the surface of the protection floating body, and a protection fence is arranged at the bottom of the protection floating body. The ecological environment wetland protection device is characterized in that the fixing device comprises adjusting positioning rods and fine adjusting devices; the fine adjusting devices are arranged between the adjusting positioning rods and the protection floating body and play a role in finely adjusting the position of the protection floating body; and the adjusting positioning rods are installed on one side or two sides in the vertical direction of the protection floating body and play a role in fixing. The ecological environment wetland protection device is simultaneously provided with the adjusting positioningrods and the fine adjusting devices, and thus the flexibility of the protection device can be increased to different degrees through the fine adjusting devices for adjusting the protection floating body in the proper position and the adjusting positioning rods improved for adapting to different protection floating bodies, and the stopping capacity is greatly enhanced.

The invention discloses an antibacterial ceramic product and a preparation method thereof. The antibacterial ceramic product is prepared from the following raw material components in parts by weight:25-35 parts of coal gangue, 15-20 parts of sea mud, 10-15 parts of shell powder, 3-10 parts of boron mud, 10-20 parts of ceramic clay and 10-15 parts of potassium feldspar. Through the manner, the antibacterial ceramic product is low in production cost, excellent in antibacterial property and lasting in antibacterial property.

The invention provides a comprehensive water environment pollution prevention and control system. The comprehensive water environment pollution prevention and control system comprises a comprehensiveprevention and control compartment, a winding pipe structure, a multi-stage filtering structure, a water quality sampling structure, a detection frame structure, a water quality detection box structure, a water pump structure, a sewage treatment cylinder, a water outlet pipe, a second-stage manual valve, a detection chamber, a traction hook, a traction vehicle and a fixed platform; the winding pipe structure is connected with the left side of the lower surface of the internal part of the comprehensive prevention and control compartment through a bolt; and the multi-stage filtering structure isconnected between the left side and the right side of the internal part of the sewage treatment cylinder through a screw. The comprehensive prevention and control compartment and the traction vehicleare provided, so that the water environment comprehensive prevention and control system is transferred to the needed environment, water quality detection and treatment can be conducted and moving userequirements of different occasions are met; and an activated carbon adsorption layer, a manganese sand filtering layer and a quartz sand filtering layer are provided, so that the sewage can be subjected to three-stage filtration, harmful impurities in the sewage can be eliminated and the effect of purifying the water quality can be achieved.

The invention discloses a plant ecological floating bed which comprises a floating bed carrier, wherein a solar aeration device is arranged on the carrier; emergent plants are planted on the floating bed carrier; a microbial load bed is arranged below the water surface; the microbial load bed and the floating bed carrier are arranged in parallel through a connecting piece. An emergent plant bed body provided by the invention is made of polystyrene materials and is corrosion-resistant, frostproof, environment-friendly and long in service life; hardy plants are planted on a planting bed, so that an ecological floating bed system can also purify the water in winter. According to the invention, the emergent plants are combined with microorganisms, so as to form a double-treatment system of the emergent plants and the microorganisms, and promote the quick degradation and transformation of pollutants.

The invention discloses a health-preserving and anti-bacterial Nixing pottery product and a processing method thereof. The health-preserving and anti-bacterial Nixing pottery product is prepared fromthe following raw materials in parts by weight: 50 to 80 parts of eastern clay, 50 to 70 parts of western clay, 10 to 20 parts of attapulgite, 5 to 10 parts of illite, 5 to 10 parts of concha margaritiferallsta, 5 to 10 parts of shell powder, 1 to 3 parts of hydroxyapatite, 0.5 to 1.5 parts of titanium dioxide, 1 to 3 parts of zinc oxide, 3 to 5 parts of sintering additive, and 5 to 10 parts of furnace transmutation material. The health-preserving and anti-bacterial Nixing pottery product has the advantages that under the coordination function of the components, when the Nixing pottery productis fired, the plasticity of the clay material is improved, the shrinkage rate of the clay material is effectively reduced, the deformation and cracking of the blank are reduced, the integrity in forming of the Nixing pottery product is guaranteed, the finished rate and furnace transmutation rate of the product are improved, the bacteria can be inhibited and killed at high efficiency, and the mildew is inhibited; the produced tea pots, tea cups, bowls and dishes and other daily products can play a role in purifying water, the harmful gas and foreign odor in the indoor air can be removed, and the pursuit of modern people on health preserving can be met.

The invention discloses a semi-factory pond internal circulation culture system, and belongs to the technical field of aquaculture. The semi-factory pond internal circulation culture system comprisesa culture unit, a pollution discharge unit and a water purification unit, and is characterized in that the water outlet of the culture unit communicates with the water inlet of the pollution dischargeunit; the water outlet of the pollution discharge unit communicates with the water inlet of the water purification unit, and the water outlet of the water purification unit communicates with the water inlet of the culture unit; the culture unit includes a water tank, an aeration oxygen-increasing device, a submerged air-lifting device, a first-stage auxiliary oxygen-increasing device, a second-stage auxiliary oxygen-increasing device, a dead water prevention device and a material-blocking device; the pollution discharge unit comprises a primary pollution discharge device and a secondary pollution discharge device; and the water purification unit comprises a water purification unit body, a water pushing device, a microporous oxygen-increasing machine and aquatic plants. The culture systemdisclosed by the invention can effectively improve the dissolved oxygen content in inlet water, enhance the water pushing effect, increase the water exchange amount, increase the dissolved oxygen level, reduce the water body pollution, improve the feed utilization rate, and promote rapid growth of fish.

The invention discloses a water body in-situ algal inhibition treatment system and method based on UVB-LED and floating-leaved plants. The system comprises a floating bed body, the floating-leaved plants in the floating bed body and a UVB-LED device suspended below or on the side face of the floating bed body. Biological algae inhibition can be carried out through the effects of shading, competitive absorption of nitrogen and phosphorus nutrient substances, interference of secreting allelochemicals and the like of floating-leaf plants on the water surface, and meanwhile UVB radiation physicochemical algae inhibition of the UVB-LED device is achieved. The system has the advantages of low cost, no need of additional chemical agents, small ecological risk, realization of the restoration of the eutrophicated water body, reduction of chlorophyll a in the water body by 95% or more, COD removal rate by 40% or more, total phosphorus removal rate by 60% or more, total nitrogen removal rate by 55% or more, and great enrichment of the landscape effect of the water surface, and has a wide application prospect in the field of eutrophic water body pollution control.

The invention belongs to the field of environment-friendly materials, and particularly relates to adsorption type bone apatite and a preparation method and application thereof. The preparation methodcomprises the following steps: removing organic matters in animal bones; calcining the animal bones without the organic matters to obtain bone apatite; and carrying out surface chemical modification on the bone apatite by adopting a phosphoric acid solution to obtain the adsorption type bone apatite. The adsorption type bone apatite can be used for adsorbing heavy metal ions in industrial sewage,and the specific surface area of the adsorption type bone apatite is increased from 47.832 (m<2> / g) to 131.566 (m<2> / g) compared with the specific surface area of the adsorption type bone apatite before modification; when the initial concentration of Pb<2> is 200 mg / L, a removal rate can reach 98.3%; for Zn<2> and Cu<2> ions with an initial concentration of 200 mg / L, the removal rate of the ions can reach 70% or above; so the adsorption type bone apatite has good heavy metal ion removal capacity. The technical problem that bone apatite in the prior art is not high enough in adsorption capacityis solved.