444 results about "Aquaculture wastewater" patented technology

The invention belongs to the technical filed of agricultural microorganisms, particularly relating to separate and screen Pseudomonas stutzeri YZN-001 for degrading ammoniacal nitrogen, nitrate nitrogen and nitrous nitrogen in water body and application. The screened Pseudomonas stutzeri YZN-001 of the invention is preserved in China Center for Type Culture Collection (CCTCC), with the preservation number being CCTCC NO:M 209107. The strain can effectively degrade ammoniacal nitrogen, nitrate nitrogen and nitrous nitrogen in water body within the range of 20-37 DEG C, has no toxicity to chub, has good degradation function on ammoniacal nitrogen in water body at normal temperature, the microorganism of the invention is inoculated for 72 hours, the degrading ratios to ammoniacal nitrogen in domestic sewage and aquaculture wastewater are respectively up to 83.10% and 61.38%.

The invention discloses an ecological seawater rare fish factorization circulating water aquaculture system which comprises an aquaculture pond, a primary filter tower, an albumen segregator, a primary biological filter tower, a secondary biological filter tower, a tertiary biological filter tower, an algae treating pond, a source water filter pond, a UV (Ultraviolet) sterilizer, a temperature adjusting pond, an arc-shaped sieve, a primary sedimentation pond and a secondary sedimentation pond. A bidirectional drainage system is adopted by the aquaculture pond, the water containing less smaller particles at the lower part of the pond and the water containing more larger particles at the bottom of the pond are respectively drained and then input into different processing units for recycle. Molluscs, sea cucumbers and algae are drawn into aquaculture waste, wastewater disposal and resource utilization by the circulating water aquaculture system, so that the circulating water aquaculture system has an obvious ecological characteristic. The ecological seawater rare fish factorization circulating water aquaculture system has the advantages of high treatment efficiency of aquaculture wastewater and rubbish, simpler equipment, low energy consumption, high backwash efficiency, resource utilization of aquaculture wastewater and rubbish, less circulation supplement water, high treatment efficiency of inorganic nutrient salt in the water and high economic additional value.

The invention discloses a composite bacteria-algae preparation, which consists of nitrifying bacteria, bacillus licheniformis, scenedesmus obliqnus and selenastrum capricornutum, wherein the volume ratio of the nitrifying bacteria to the bacillus licheniformis to the scenedesmus obliqnus to the selenastrum capricornutum is 1-2: 1-3:1-3:1-3, and the microbe inoculation amount per milliliter is 8*106CFU. The composite bacteria-algae preparation also can be prepared into a globular immobilized preparation by adopting a known embedding method, using the nitrifying bacteria, the bacillus licheniformis, the scenedesmus obliqnus and the selenastrum capricornutum as embedding bacteria and using polyvinyl alcohol, sodium alginate, active carbon, silicon dioxide and calcium carbonate as embedding agents. The bacteria, algae and immobilization materials used by the composite bacteria-algae preparation have no toxic or side effect on aquaculture animals, and can effectively purify the aquaculture waste water; the bacteria and the algae can inhibit the growth of harmful pathogenic bacteria to a certain degree; an immobilization method has simple operation; the immobilized efficient bacteria-algae microbial bactericide is easy to store and transport; and the immobilization materials are economic and practical and easy to recycle.

The invention discloses a method for purifying mariculture wastewater by utilizing a compound microbial inoculant. The method comprises the following steps: (1) screening the compound microbial inoculant which consists of photosynthetic bacteria, nitrobacteria, denitrifying bacteria, candida utilis, lactobacillus acidophilus and bacillus; (2) activating the compound microbial inoculant by utilizing a culture medium: directly adding the strain into the culture medium based on 1% of inoculation amount (w/v), and activating the strain by a shaker at the temperature of 37 DEG C with the speed of 150rpm (revolution per minute) for 24 hours so that the total content of microbes is 7*10<8>-9*10<8>CFUs (colony forming units)/mL; and (3) adding the activated compound inoculant into the treated aquaculture wastewater, wherein the compound inoculant accounts for 0.06%-0.12% of the total weight of the aquaculture wastewater. The method has the advantages of no toxicity and harm on aquaculture animals, simple process, fast organic matter degradation speed, obvious effect, no drug residues and no secondary pollution. Therefore, the method has economic feasibility and is applicable to popularization and application to coastal aquaculture industry.

The invention discloses a method for treating aquaculture wastewater. The method comprises the following steps of: performing modular processing on wastewater by using microalgae and beneficial bacteria; and throwing snails, filter-feeding fishes and other aquatic animals into a water body to realize self-purification of an aquaculture water environment after the modular processing. Dominant and beneficial microalgae such as diatom, green algae and the like capable of absorbing nitrogen and phosphor in the aquaculture water body are screened out, inoculated, rapidly cultured and put into the aquaculture water body; the water color is regulated and the alga concentration is controlled by the methods of rational fertilization and rotifer inoculation; the beneficial bacteria are bacillus and photosynthetic bacteria capable of degrading organic matters and ammonia nitrogen in the water body; the beneficial bacteria and feed are proportionally mixed before the feed is put into the water body; after the feed is put into the water body, an underwater biomembrane taking the feed as a matrix is formed; the nitrogen, the phosphor and other harmful pollutants in the aquaculture water body can be effectively removed by jointly using the microalgae and the beneficial bacteria; simultaneously, the utilization efficiency of the feed can be improved by mixing the beneficial bacteria and the feed; and the water body is processed by using the microalgae and the beneficial bacteria, and then the snails and the filter-feeding fishes are put into the water body to prevent excessive multiplication of phycomycete, so that the self-purification of the aquaculture water environment can be realized.

The invention relates to MOF materials for adsorbing phosphate anions. The MOF materials are taken as adsorbents to be applied to adsorption of the phosphate anions in a water solution, and have remarkable adsorptivity on the phosphate anions. Several MOFs materials are respectively added in phosphorous water of different concentrations and phosphorous water of different pH values to be stirred for 1-120 min, the phosphorus removal rate can be up to 90-99%, and the processed MOFs materials have no phosphorus desorption phenomenon and secondary pollution on environment. The several MOFs materials have the advantages of being large in specific surface area, high in adsorption capacity, high in dephosphorization efficiency, small in usage amount, simplicity, safety, high efficiency and low cost. The invention relates to phosphorus removal application of industrial wastewater, lake water, tail water discharged by sewage treatment plants, and aquaculture wastewater.

The invention provides a method and a filtering system for removing solid suspended particles from an aquaculture system. The method comprises the following steps of: continuously injecting aquaculture waste water which contains the solid suspended particles into a filter rotor drum of a micro-filter from a water inlet pipe; discharging the waste water from a drain pipe after being filtered by a filter screen of the filter rotor drum; intermittently driving the filter rotor drum to rotate while starting a back washing device to wash the filter screen so as to wash away the particles on the filter; and stopping the rotation of the filter rotor drum and the washing of the back washing device after finishing washing. The filter system comprises the micro-filter and an automatic power supply control device, wherein the micro-filter comprises a cover, a box, a center support shaft, the filter rotor drum, the back washing device, a back washing water pump, a dust collecting funnel, a motor, a transmission device, the water inlet pipe and the drain pipe. The filter rotor drum and the back washing device are intermittently started and the filter screen is back washed so the energy consumption of the micro-filter can be effectively decreased and the filtering effect is improved.

The invention discloses a method for treating aquaculture wastewater through immobilized chlorella and belongs to the field of water purification. By utilizing absorption and utilization of chlorellaon nutritive materials and other trace elements in the wastewater and immobilization on sodium alga acid, alga-water separation can be well performed when the chlorella achieves an effect of purifyingthe wastewater. The method has the advantages that the aquaculture wastewater is treated by chlorella immobilized by the sodium alga acid, and increasingly severe fresh water pressure is relieved; moreover, due to absorption and utilization of the chlorella on various elements in the wastewater, the wastewater is purified, and the load of the wastewater discharged into natural water finally is further retarded; in addition, after the chlorella is immobilized, the alga-water separation can be well realized, and equipment cost is reduced.

The invention relates to an isotope-based analysis method for nitrogen pollutants in an offshore aquaculture water area. The contribution rate of aquaculture wastewater to nitrogen in offshore water is acquired in the manner of analyzing the abundance values of nitrogen isotopes in the offshore water and the aquaculture wastewater according to the different components of the nitrogen isotopes in different pollution sources and receiving water. The method specifically comprises the following steps: step 1, collecting samples on all the sampling sites before the flood tide according to nationalrelevant industrial standards; and step 2, adopting an isotope mass spectrometer for analyzing the abundance values of nitrogen, hydrogen and oxygen isotopes in all the samples, comparing with the abundance values of the isotopes of a standard sample, calculating an isotope rate value of the samples, accordingly calculating the abundance values of 2H-H20, 18O-H2O and 15N-NO3 in an effluent sample,an aquaculture wastewater sample and a tidal creek sample, and applying a bayesian network model for calculating the contribution rate of the pollution sources. Due to the use of the isotopes in theinvention, the accuracy of analysis result is increased, the monitoring workload is effectively reduced and the human and material resources are saved.

The invention relates to an aquiculture waste water circulating treatment system and belongs to the technical field of culture waste water treatment. The aquiculture waste water circulating treatment system comprises an aquiculture pond array, wherein the aquiculture pond array is sequentially circularly connected with a three-stage stepped sedimentation pond, an alga purification pond, a biological membrane treatment pond, a secondary sedimentation pond, a disinfection pond, a filter pond and an aerobic pond through pipelines; a water body inside the aquiculture pond array circulates through water pumps arranged among the ponds. The aquiculture waste water circulating treatment system disclosed by the invention is simple in structure and reasonable in design, can be used for sequentially treating the aquiculture waste water through the three-stage stepped sedimentation pond, the alga purification pond, the biological membrane treatment pond, the secondary sedimentation pond, the disinfection pond, the filter pond and the aerobic pond, is easy and quick to operate and has good treatment effect; moreover, the water body treated by the system can finally reach the requirement of aquiculture.

The invention discloses a process for removing nitrite in aquaculture wastewater by immobilized nitrobacteria. The process comprises the preparation of nitrobacteria concentrated solution, the preparation of nitrobacteria immobilized particles, the activation of the nitrobacteria immobilized particles, the preparation of a nitrobacteria immobilized particle reaction packet and the removal of nitrite in the aquaculture wastewater by the reaction packet, wherein the preparation of the nitrobacteria immobilized particles comprises the steps that an aqueous mixture of polyvinyl alcohol, sodium alginate and silicon dioxide is heated and fully dissolved, and is evenly mixed so as to be made into embedding solution; when the embedding solution is cooled down to room temperature, embedding nitrobacteria concentrated solution is added in the embedding solution; after evenly mixed, the mixed solution is dripped into a crosslinking agent; the crosslinking agent consists of calcium chloride solution and saturated boric acid solution which are mixed according to the volume ratio of between 1 to 1 and 1 to 3; and finally, the immobilized particles are filtered out by a piece of gauze. The process has the advantages that nitrite has quick, continuous and stable degradation effect, and maintains high biological activity for a long time; moreover, the reaction packet can be used repeatedly and has the advantages of simple manufacturing method and low cost, thereby having enormous application prospect.

The invention relates to a sewage treatment agent. The sewage treatment agent is prepared from the following components: chitosan solidified tannin, a sodium bentonite-loaded microbial agent, graphene, a biological compound enzyme, an organic-inorganic flocculant, a flocculation aid, sodium hydrogen sulfite, coconut shell powder and sawdust. The sewage treatment agent disclosed by the invention ishigh in bioactive substance stability and high in activity, has good adsorption capacity, flocculation capacity and biodegradation capacity, is applied to river sewage and aquaculture wastewater treatment, can effectively remove most of heavy metals, complexes and organic matters in sewage, effectively reduce the nitrogen and phosphorus content in sewage, and purifiy water, and is efficient and environmentally friendly; and no secondary pollution is caused.

The present invention provides a method for treating aquaculture wastewater. The method includes stages, pretreatment, biological treatment and advanced treatment. The pretreatment stage comprises grating slag removal, primary sedimentation adjustment and flocculation sedimentation. The biological treatment stage includes anaerobic treatment, multi-stage biological contact oxidation process. The advanced treatment stage includes decolorization treatment and membrane bioreactor treatment. The method for treating aquaculture wastewater has the advantages of low comprehensive energy consumption, strong impact resistance system, small land occupation and good treatment effect.

The invention discloses a preparation method and application of a composite nano biomass charcoal material. Nano biomass charcoal balls for purifying aquaculture wastewater are prepared by compounding EM liquid with an inorganic macromolecular flocculating agent PAC, and immobilizing the compound liquid on a composite carrier obtained by mixing rice stalk powder, nano manganese oxide and kaolin at high temperature. The nano biomass material is simple in preparation process, has good adsorption and flocculation effects on suspended solids in the aquaculture wastewater, has a significant removal effect on suspended solids, ammonia nitrogen, total phosphorus, heavy metals and the like in the wastewater, and has the advantages of rapidly improving water quality and eliminating peculiar smell.

The invention discloses an ecological processing system used for aquatic product culture waste water and a method thereof. The system comprises a filtering-feeding fish culture pond, a primary filterpool, a biological floating island processing pool, a secondary filter pool, and a benthophyte treatment pool; wherein the primary filter pool and the secondary filter pool are filled with pelelith, plants are planted on an upper surface of the pelelith, and microbe bacterial strains are placed at a lower part. Through multilevel processing, each level of processing adopts omnibearing and multi-layered processing measurements, the aquatic product culture waste water can be efficiently processed and purified, and can be recycled, so that the ecological processing system achieves eco-environmentprotection.

The invention relates to a water treatment technique, in particular to a method for biological resource recovery of industrial marine fish aquaculture wastewater. In the method, macroscopic algae, filter feeders, sediment animals and carnivorous fishes are cultured in the industrial marine fish aquaculture wastewater of which the water temperature is between 4 and 27 DEG C to form a biological filter to treat the wastewater discharged by industrial fish aquaculture, wherein the macroscopic algae are warm water macroscopic algae and cold water macroscopic algae; the filter feeders are filtering seashells and fishes, the seashells comprise one or more of oyster, sea-mussel and scallop, and the filtering fishes are barracudas; the carnivorous fishes comprise one or more of weever, flounder and black marine rock fish; and the sediment animals are Stichopus japonicus Selenka. In the method, based on the ecology principle, the macroscopic algae, the filter feeders, the sediment animals and the carnivorous fishes are combined together, and the macroscopic algae, the filter feeders, the sediment animals and the carnivorous fishes coordinate with one another and serve as the biological filter to comprehensively treat the wastewater discharged by the industrial fish aquaculture.

The invention discloses a purification, disinfection and activation integrated device for aquaculture water. The purification, disinfection and activation integrated device comprises a box body, and an electrolysis system, an aeration system and an activation system which are located in the box body, wherein the electrolysis system and the aeration system are located on the upper part of the box body; the activation system is located on the lower part of the box body; the device integrates filtration, electrolysis, aeration, activation and the like; the volume of equipment units is small, the combination and the volume expansion are convenient, the energy consumption of the device is low and the operation cost is lower than that of other traditional disinfection manners. The invention further discloses a purification, disinfection and activation method for the aquaculture water, and the method comprises the following steps: filtering, electrolyzing, aerating, activating and washing; the method can be used for effectively carrying out purification, disinfection and activation on the aquaculture wastewater, and any medicament does not need to be additionally arranged so as to avoid secondary pollution caused by additionally adding the medicaments; zero emission of the culture wastewater is realized; influences on the growth and development of fishes, shrimps and shells are avoided by short-period oxygenation treatment; cancerogenic substances are not generated and the method is safe and harmless.

The invention discloses disinfection powder for disinfecting hospital and aquaculture wastewater. The powder is prepared from the following components in percentage by mass: 20%-30% of potassium monopersulfate, 15%-20% of sodium dichloro isocyanurate, 25%-45% of dodecyl dimethyl benzyl ammonium chloride, 10%-15% of protochloride and 2%-5% of sodium hexametaphosphate. The compound disinfection powder has the advantages that (1) the compound disinfection powder is an oxidizing and non-oxidizing fungicide complex, and is good in sterilization effect; (2) the compound disinfection powder contains a dispersant component, is capable of stripping biological slime and is free of a dead angle in sterilization and disinfection; (3) the compound disinfection powder is low in consumption and does not generate secondary pollution; and (4) residual chlorine in discharged water does not exceed the standard.

The invention relates to a method for purifying the aquaculture wastewater for prawns, and is intended to effectively filter out soluble harmful components, suspended substances and other harmful substances in the aquaculture water. The method sequentially comprises three-stage purification of the aquaculture wastewater: biological purification, filtration purification and absorption purification. In the biological purification, the algae is used for absorbing ammonium and other soluble harmful components in the wastewater discharged from the aquaculture pond as well as organic granules in the filter-feeding wastewater for filter-feeding shellfish and fish; in the filtration purification, the method allows the wastewater to pass through a sand-filtering field, so that the suspended granules and plankton in the wastewater can be filtered out; and in the absorption purification, parts of the soluble substances in the wastewater are absorbed by the surfaces of corallites and activated carbon, while parts of the soluble substances are absorbed and transformed by the beneficial bacteria growing on the surfaces of the corallites and the activated carbon. By adopting the circulation of aquaculture water, the invention can reduce the wastewater discharge and reduce the probability of outbreak and prevalence of prawn-related diseases on one hand, and by putting algae, shellfish and filter-feeding fish in the circulation, the invention can increase the income and the economic benefit of aquaculture on the other hand.

The invention relates to a flow and a device for aquaculture sewage combination purifying treatment and belongs to the technical field of sewage treatment. The flow for sewage treatment includes that water in an aquaculture pond enters a batching tank in a dropping filtering device, a siphon device is adopted to enable water in the batching tank to enter the dropping filtering device, a fixed spraying device is then utilized to evenly spray water on the surface of the dropping filtering device, and treated water is redischarged into an aquaculture pond. Galvanized round steel is utilized as a support in a biological contact oxidation pond, a combination filler formed by a plastic ring and polyester silk is hung on a filler support and has good adaptability and high efficiency on pollutant in water, simultaneously the pulse aeration oxygenating technology is adopted to provide dissolved oxygen for a micro-biological degradation pollutant in the oxygenating time, and simultaneously has necessary washing effect on the aged biofilm on the filler. After the oxygenating process is stopped, power consumption is saved, and simultaneously denitrification reaction can better proceed favorably, accumulation of nitrite nitrogen in water is reduced, discharged water passes through a common dropping filtering device utilizing ceramsite as filler, and the discharged water can reach fishery water quality standard.

The invention discloses a method for in-situ purification on aquaculture waste water by a biochar reinforced bacterium and algae immobilized preparation. Sodium alginate and calcium chloride solutionare used as crosslinking agents; immobilized gel small balls formed by bait algae, aquaculture probiotics and biochar powder are embedded; the small balls are charged into a nylon wire net and are then soaked into the in-situ purification culture waste water. The specific surface area of the prepared immobilized small balls is improved and is large; the mass transfer performance is improved; the tolerance of microbes on the outside toxicity is enhanced; the degradation capability on contaminants is improved; the water purification goal is achieved.

The invention discloses a water quality circulating purification and oxygen supply device for an aquaculture pond. The water quality circulating purification and oxygen supply device comprises a waterdecanter connected to the aquaculture pond through a suction pipe, a filter connected to the water decanter, and a membrane separation and purification mechanism connected to the filter and used fordeep wastewater purification. The membrane separation and purification mechanism is composed of a plurality of membrane purification components connected in series. After being treated by the membranepurification components, wastewater flows into a circulating water tank and then enters the filter to circulate. After being treated by the membrane purification components, purified water is sterilized and disinfected by an ultraviolet lamplight component, then flows into an aeration mechanism, and finally returns to the aquaculture pond. The water quality circulating purification and oxygen supply device has the advantages that the purification rate of aquaculture wastewater and the oxygen content are high, water resources are recycled, and water pollution is reduced.

The invention discloses a treatment method of aquacultural waste water. According to the treatment method, three kinds of algae, including chlorella pyrenoidosa, scenedesmus obliquus, and pseudokirchneriella subcapitata, are used for treating aquacultural waste water. According to the treatment method, a mixture of the three kings of algae is capable of removing substances in different forms, such as nitrogen and phosphor, in waste water; the treatment method is simple and effective, is low in cost, and is high in practicality; and the algae can be taken as food of aquatic animals.

The invention discloses a factory aquaculture water circulating device. Aquaculture wastewater is subjected to solid-liquid separation treatment to remove most of solid particles, remaining soluble organic matters, ammonia nitrogen and nitrite nitrogen are primarily biologically treated, the soluble organic matters, the ammonia nitrogen and the nitrite nitrogen remaining in the aquaculture wastewater are subjected to ozone contact oxidation, and the aquaculture wastewater subjected to the ozone contact oxidation treatment is aerated to reduce or remove strong oxides which are produced by the ozone contact oxidation treatment and dissolved in the aquaculture water. The device has the advantages of novel structure, complete oxidizing substance degradation, low use cost, high safety, low environmental pressure and quick effect.

The invention discloses a wastewater treatment agent for aquaculture. The wastewater treatment agent contains an ingredient A, an ingredient B, an ingredient C and an ingredient D, wherein the ingredient A is at least one of dicalcium phosphate, sodium dihydrogen phosphate, sodium selenite and magnesium sulfate; the ingredient B is at least one of DL-methionine, a L-lysine salt, tryptophane, threonine, betaine, astaxanthin, glucan, peptidoglycan, yeast and lipopolysaccharide; the ingredient C is at least one of sodium humate powder, sodium thiosulfate powder and aluminum potassium sulfate powder; and the ingredient D is at least one of glycyrrhiza uralensis, mung bean flour, acanthopanax bark, codonopsis pilosula, dried tangerine peel, Chuanxiong rhizome, gardenia, gypsum, dittany bark, folium isatidis, cortex phellodendri, radix isatidis, eupatorium fortunei and radix bupleuri. According to the wastewater treatment agent for aquaculture, through promoting the growth of plankton in culture water, the water treatment rate is accelerated, the self-purification ability of the water is improved, the improvement on water environment is promoted, influence on fishes in the water cannot be caused, and secondary pollution cannot be caused.