1572results about How to "Increase dissolved oxygen" patented technology

The invention discloses a special amino acid fertilizer-water paste for aquiculture and a preparation method thereof. The special amino acid fertilizer-water paste for aquiculture is prepared from the following raw materials in certain proportion: an amino acid solution, microelements, fermentation organic substances, inorganic fertilizers, minerals, a water quality improver, beneficial bacteria and a thickening agent. The preparation method comprises the following steps: A. production of amino acid solution namely, a. hydrolyzing; b. neutralizing; c. filtering; d. concentrating; B. production of fermentation organic substances: a. mixing: evenly mixing organic raw materials with the amino acid solution; b. inoculation: evenly mixing the organic raw materials with beneficial bacteria; c. fermentation; and C. production of amino acid fertilizer-water paste: a. chelation: heating the amino acid solution, adding microelements while stirring to perform chelation; b. mixing: sequentially adding the fermentation organic substances, inorganic fertilizer, minerals, water quality improver and beneficial bacteria, and evenly mixing; c. thickening: adding a thickening agent, and evenly mixing; d. inspection. The invention enhances the immunity of fish, reduces the occurrence of diseases, increases the culture yield of bighead, lowers the fish culture cost, and improves the fish quality.

The invention belongs to the art of electrochemical oxidization. Disclosed is an electrolytic treatment system for shipboard ballast water, by electrolyzing the shipboard ballast water directly in the electrolytic treater, highly-effective oxidant which contains one or more among Cl2, HClO molecule, ClO2, free oxygen and hydroxyl radical, being generated, and by the force of electric field, the creature in shipboard ballast water being killed or deactivated. The online detective element measures the concentration of the generated oxidant and sends an electrical signal to an electrical power controller, which can adjust by said signal the electrolytic voltage or adjust treatment flow capacity by changing the opening of the valve when the ballast pump is a centrifugal pump, to keep the concentration of the oxidant in a right range. The invention can effectively remove microcosmic salt out of seawater, reduce the content of COD and TOD in seawater, and increase the dissolved oxygen in seawater. It improves the quality of seawater.

The invention relates to an alga microorganism fertilizer agent and a preparation method thereof and belongs to the technical field of aquiculture and the like. The alga microorganism fertilizer agent is fermented in such a way that monosodium glutamate waste liquid, alga paste, photosynthetic bacteria, actinomycetes, azotobacters and bacillus subtilis are compounded, and meanwhile, chitosan, chitosan oligosaccharide, microelements and molasses are added according to appropriate parts. The alga microorganism fertilizer agent is formed in such a way that the monosodium glutamate waste liquid is adopted for fermentation, and the raw materials preparation is simple; high-content compound bacteria are contained (the content of the bacillus subtilis is larger than three hundred million/mL, and the total content of the photosynthetic bacteria, the actinomycetes and the azotobacters is larger than one hundred million/mL) and the fertilizing effect is obvious; and the alga microorganism fertilizer agent also has a function of purifying water body, has a wide application range, and is suitable for sea-water and fresh-water cultivation.

The invention relates to the field of aquaculture and discloses a probiotic preparation and a preparing method and application thereof. The probiotic preparation is prepared from bacillus, lactic acidbacteria, saccharomycetes and photosynthetic bacteria through liquid fermentation. The bacillus consists of bacillus subtilis and bacillus natto. The lactic acid bacteria consist of lactobacillus plantarum, lactobacillus acidophilus and lactobacillus casei. The saccharomycetes consist of candida utilis and saccharomyces cerevisiae. Rhodopseudomonas palustris severs as the photosynthetic bacteria.According to the probiotic preparation, ammonia nitrogen and nitrite in an aquaculture water body can be effectively degraded, water body organic matter is decomposed, the pH value of the water bodyis adjusted, the content of dissolved oxygen of the water body is increased, and meanwhile, harmful pathogens in the aquaculture water body can further be inhibited; and in addition, the probiotic preparation can further improve the micro-ecological environment of intestinal tracts of aquatic animals, adjust balance of intestinal flora and inhibit the growth of harmful bacteria, thus nutrient absorption is increased advantageously, and the feed utilization rate is increased.

The present invention discloses a fully soluble aquatic fertilizer and its preparation method and pertains to aquaculture field. The aquatic fertilizer of the present invention comprises monoammonium phosphate 15-45%, sodium humate 12-20%, sodium silicate 5-12%, compound premix 8-13%, and urea 30-40%. The compound premix is mainly composed of trace elements. Firstly, the aquatic fertilizer of the present invention has comprehensive nutrition and balanced formula; secondly, the present invention has high dissolution speed and utilization rate; thirdly, the present invention features simple use method, small use amount, sufficient content, long lasting time and low cost; fourthly, the present invention can not only promote the mass propagation of food organisms of aquatic animals but also specifically cultivate helpful algae, improve water quality, increase dissolved oxygen, effectively avoid pond poisoning, reduce diseases, lower feed coefficient and enhance fish immunity; the present invention is green and environment-friendly, and has stable quality and no harm on human and animal and no pollution on environment.

The invention provides a microbial preparation for improving freshwater aquaculture water body. The microbial preparation comprises the following raw materials by weight percentage: 25-30 wt% of bacillus subtilis, 25-30 wt% of bacillus licheniformis and 15-20 wt% of rhodopseudomonas palustris. The invention also provides a method for preparing the microbial preparation, which comprises the following steps of: sequentially inoculating the seed culture liquids of the bacillus subtilis, the bacillus licheniformis and the rhodopseudomonas palustris into a culture medium, fermenting to obtain a bacteria liquid, and mixing the obtained bacteria liquid with a carrier and nutrient substances to obtain the microbial preparation. The microbial preparation provided by the invention can significantly improve the water quality of the aquaculture water body and can also improve the meat quality of bred animals.

The invention discloses a device and a method for processing restaurant wastewater. A ferrallitic sheet is used as an anode and a graphite sheet is used as a cathode to carry out pulse direct current electrolysis on the restaurant wastewater so as to cause an electrocoagulation reaction; simultaneously ultrafine ozone bubbles are fed into an electrocoagulation reaction region to strengthen the electrocoagulation reaction, so that ferrous irons Fe2+ generated in the electrolysis process is rapidly converted into ferric irons Fe3+, the volume of flocculate becomes larger and the flocculate precipitates more efficiently to remove most of pollutants in the wastewater; sludge generated in the electrocoagulation process enters an activated sludge reactor and a sludge concentrating and extruding device; and clear water containing a little amount of organic matter enters an aeration-ozone-ultraviolet combined treatment degradation tank and a photocatalyst micro filtration membrane, and finally outflows through a fine porous sand filtering tank. The produced water can reach the primary standard in the industry. The processing method has high impact-load resistance. The outlet water quality is stable. In the engineering, consumables have long service life. Therefore, the processing cost of the restaurant wastewater can be greatly reduced.

The invention discloses a method and device for treating organic solid waste. The method comprises the steps: (a) carrying out physico-chemical pretreatment, namely adding water and additives into the waste, and heating and stirring; (b) carrying out hydrolysis, namely hydrolyzing the waste which is subjected to physico-chemical pretreatment, so as to obtain a hydrolyzate; (c) carrying out oxidization, namely oxidizing the hydrolyzate, so as to obtain an oxidization product; (d) carrying out solid-liquid separation, namely carrying out solid-liquid separation on the oxidization product, so as to obtain a solid oxidization product and a liquid oxidization product; and (e) carrying out activation, namely activating the solid oxidization product in the case of heating, pressurizing, steaming and additive adding, thereby obtaining an activated product.

The invention belongs to the field of sewage ecological treatment, and the purpose is to provide a device and a method for sewage decentralized treatment in circulating vertical flow constructed wetlands. The invention comprises the following aspects: 1) the high-efficient circulating vertical flow constructed wetland system comprises three main components of a vertical flow constructed wetland, a circulating water tank, and a reinforced adsorption column; 2) the operation modes comprise an intermittent mode and a continuous mode. Fillers of the constructed wetland are proportional compositions of several fillers which are low in price and high in adsorption capacities for nitrogen and phosphorus; plants which have strong durability against pollution and have landscape value (thalia dealbata or day lily) or economic value (hybrid pennisetum) are planted on the wetland surface. The invention adopts the high-efficient filler composition to reinforce nitrogen and phosphorus adsorption; effluent backflow increases the dissolved oxygen inside the vertical flow constructed wetland, and enhances the nitration capability of microbes in the wetland; the denitrification capability is enhanced; the contact time of sewage and the fillers is increased; and the removal of phosphorus is enhanced. Series-parallel combinations can be selected flexibly with respect to different sewage types, and the applicability is strong.

The invention relates to an enclosed seawater pond system for mixed aquaculture of intertidal shellfish, shrimp and crab. According to the invention, the whole enclosed seawater pond is divided into two parts comprising a shellfish cultivation zone and a shrimp and crab cultivation zone by using a nylon net; meanwhile, an automatic aerator is arranged on one side of the shrimp and crab cultivation zone, which is close to the shellfish cultivation zone. Most of mesh holes of the nylon net for separating the shellfish cultivation zone from the shrimp and crab cultivation zone are controlled within 2-3 mm, and mesh holes with the diameters of 4-5 mm are arranged on a place with the width of not more than 2 mm, which is close to the direction of the automatic aerator, so that on the one hand, the cultivated shrimp and crab can be prevented from entering the shellfish cultivation zone from the shrimp and crab cultivation zone to clamp and eat the shellfish; and on the other hand, the shellfish cultivation zone and the shrimp and crab cultivation zone are relatively stable, and when the automatic aerator is started, water flow of the shrimp and crab cultivation zone is convenient to enter the shellfish cultivation zone quickly to replenish a shellfish bait. The enclosed seawater pond system for mixed aquaculture of intertidal shellfish, shrimp and crab, provided by the invention, has the advantages of simple structure and convenience for construction, and can prevent fish bait microalgae from being consumed completely when the shellfish biomass live weight is larger in rainy days, and ensure that the intertidal shellfish obtains enough fish bait in the whole cultivation period and a relatively stable water area ecological environment is provided for the shrimp and crab cultaivation.

The invention discloses on-line purification equipment for a metal machining fluid and a purification method thereof. The equipment comprises a purification fluid tank, a stock solution tank, a magnetic separation pool, a magnetic slag tank, a drum type multi-stage magnetic separation device, a gas-liquid mixing pump, an ozone generator, an ozone copolymerization air-float sterilization separation device and a Y-shaped water outlet pipe, wherein the drum type multi-stage magnetic separation device adopts a drum-shaped structure, the inner wall of the drum is embedded with a plurality of same permanent magnets at certain intervals along the same axial direction; and the inside of the ozone copolymerization air-float sterilization separation device is orderly provided with a grid, a baffle plate and an ozone contact generator from bottom to top, and the upper part of the ozone contact generator is a separation zone. The method comprises the main steps of magnetic separation, gas dissolution, sterilization and water and slag discharge. The method has the advantages of realizing the on-line circular purification and use of the machining fluid, prolonging the service life of the machining fluid, greatly reducing the amount of waste fluid generated and achieving the aims of water conservation, emission reduction and clean production.

The invention relates to a water purifying agent for pond culture. The water purifying agent is powdery mixture which is prepared by uniformly mixing the following components in part by weight: 100 to 200 parts of bacillus subtilis, 100 to 200 parts of nitrobacteria, 150 to 200 parts of photosynthetic bacteria and 400 to 650 parts of zeolite powder, wherein the water purifying agent preferably comprises 100 parts of bacillus subtilis, 100 parts of nitrobacteria, 150 parts of photosynthetic bacteria and 650 parts of zeolite powder; the bacillus subtilis is light yellow powder and the total count of viable bacteria is more than or equal to 200 hundred million per one gram; the nitrobacteria is light grey powder and the total count of the viable bacteria is more than or equal to 80 hundred million per one gram; the photosynthetic bacteria is grey white powder and the total count of the viable bacteria is more than or equal to 30 to 50 hundred million per one gram; and the zeolite powder is clinoptilolite with particle size of 180 meshes. The water purifying agent has the advantages of improving water quality, conducting the function of oxidation, ammoniation, denitrification, dephosphorization, sulfurization, nitrogen fixation and the like, constructing and maintaining good ecological water environment, preventing and treating diseases, enhancing the anti-disease capacity of animals bred in the pond and improving the survival rate. The water purifying agent has a reasonable formula, is simple to prepare and has obvious application effect.

A water eco-environment protection method based on water plant harvesting. The invention relates to a water eco-environment protection method, which is characterized in that water plants are cultivated in a water body or naturally recovered water plants are utilized; nitrogen and phosphorous nutrients are absorbed by water plant growth; the water plants are harvested in growth period by manual work or waterweed harvesting equipment so as to promote the regrowth of the water plants; harvesting is carried out for multiple times, ends in the growth period and is carried out for the last time after the water plants grow seeds or vegetative propagule so as to extract the nitrogen and phosphorus nutrients from water in the form of water plant residues. The invention aims to maximize the accumulated biomass of the water plants during the whole growth period or optimize the water quality purifying effect and simultaneously remove nutrients in the water body and deposits, alleviate the eutrophication process of the water body and prevent the water plants from decaying and polluting the water body once again. The method provided by the invention is suitable for daily ecological maintenance of shallow lakes, urban landscape water, slow flow rivers, small reservoirs, wetlands and ponds.

The invention relates to the technical fields of agricultural novel fertilizers and fishing aquiculture, in particular to a special high-efficiency compound fertilizer for freshwater aquiculture. The special high-efficiency compound fertilizer is characterized by consisting of the following effective components in percentage by weight: 30-60 percent of cured organic matter, 30-54 percent of inorganic fertilizer, 3-7 percent of chelated trace fertilizer, 5-7 percent of microbial agent, 2.5-4 percent of compound multi-ore and 1 percent of water quality improver. The special high-efficiency compound fertilizer for freshwater aquiculture uses a scientific formula of trace elements according to the abundant lean condition of the trace elements in soil of China for the first time and is beneficial to improving the utilization rate of mineral nutrition contents and preventing the water body pollution caused by excessively adding the trace elements. The fertilizer contains a plurality of macroelements and intermediate trace nutrient elements which are essential for phytoplankto, has coordinated nutrient proportion and is especially suitable for the growth of delectable living feeds for fishes, such as diatom, Euglena, cryptomonas, chrysophyceae, and the like.

The invention discloses recombinant bacillus subtilis producing micromolecular hyaluronic acid and belongs to the technical field of bioengineering. Hyaluronic synthase hasA originated from streptococcus zooepidemicus is integrated into bacillus subtilis to realize production of hyaluronic acid and meanwhile, overexpression on a synthetic route key gene of HA is carried out to realize high yield of HA in bacillus subtilis. On the basis, hyaluronidase originated from leeches is integrated into a bacillus subtilis genome for secretory expression subjected to a promoter Pgrac under induction control of IPTG (isopropyl-beta-d-thiogalactoside). Different micromolecular hyaluronic acid products with different molecular weights are prepared by controlling the secretory expression amount of hyaluronidase and induction starting time. The prepared products are different in ranges of molecular weights and the recombinant bacillus subtilis has important guiding reference meaning for direct production of micromolecular hyaluronic acid in a special particular range by microorganisms. The recombinant bacillus subtilis disclosed by the invention lays a certain foundation for efficiently preparing the micromolecular hyaluronic acid and is suitable for industrial production and application.

The invention discloses a treatment method for greenhouse turtle breeding wastewater. By regarding an enhanced biofiltration system and a deep fluid water planting vegetable bed as a core, organically combining biological and ecological treatment, the method comprises the following specific steps: firstly introducing the greenhouse turtle breeding wastewater into a quick sedimentation basin to remove suspension in the wastewater; then introducing the wastewater into the enhanced biofiltration system to remove degradable organic matters and pollutants such as nitrogen and phosphorus; and flowing the tail water into the deep fluid water planting vegetable bed to perform deep treatment, and further removing nitrogen and phosphorus through synergistic effect of vegetable growth absorption and microorganism at roots. According to the method, the process is simple, the management and the maintenance are convenient, the effect is stable, the operation cost is low and the economic benefit is significant.

The invention provides a microecological bactericide for sustained release in water. The microecological bactericide is a bacillus subtilis microcapsule product and is mainly applied to aquaculture and environmental water purification. 2.0% of bacillus subtilis spores are taken as core materials, 0.8% of gelatin and 1.5% of sodium alginate are taken as composite wall materials, and 10% of calcium chloride is taken as a curing agent to prepare the microcapsule by adopting a piercing-solidifying method, wherein the encapsulated efficiency is above 87%, and the diameter of the microcapsule is 3-5mm. The product provided by the invention is applied to aquaculture, can play roles of purifying water and inhibiting pathogenic bacteria, and has a service cycle being more than 60 days.

The invention relates to a novel composite water treatment material and a preparation method thereof. The novel composite water treatment material contains tourmaline, sepiolite and graphene oxide or graphene. According to the preparation method, the graphene or the graphene oxide is wrapped on the surfaces of the sepiolite and the tourmaline by a reflux method, so the adsorptive property of the sepiolite on organic wastewater can be effectively improved by utilizing the large surface area of the graphene or the graphene oxide. The novel composite material has the characteristics of high adsorption efficiency, small using amount, energy conservation and the like, in particular, the sepiolite and the tourmaline are almost not consumed, so the treatment cost can be greatly reduced, and the dangerousness that dye molecules belonging to organic matters difficult to degrade are immersed into natural water and accumulated in the environment is avoided. Meanwhile, the graphene oxide and the graphene have good antibacterial property, so the phenomenon that activated sludge is increased too fast can be effectively improved, and considerable economic benefit, environmental benefit and social benefit are achieved.

The invention discloses an underwater aerating device based on river power decontamination, which comprises an air cylinder and a floating drum. A piston is installed in the air cylinder; a main shaft and a gear train transmission system are installed in the floating drum; a water flow driving device is connected with the part of the main shaft, which extends out off the floating drum; the water flow driving device is used for driving the main shaft to rotate when water flow flows; the main shaft is connected with the gear train transmission system; the gear train transmission system is connected with the piston through a crankshaft connecting rod transmission system and drives the piston to do front-and-rear reciprocating motion; air inlets and air outlets are respectively formed at front and rear ends of the air cylinder; one-way valves in corresponding directions are respectively installed on the air inlets and the air outlets; each air inlet communicates with the atmosphere; each air outlet is connected with an exhaust pipe; and an aerator is connected with the other end of the exhaust pipe. The underwater aerating device adopts river power to perform aeration on the water body, does not need to consume external electric energy, and can effectively save energy and reduce noise.

The invention relates to a water purifying agent, in particular to a water purifying agent for purifying an aquaculture water environment. The water purifying agent comprises the following components in parts by mass: 12 to 15 parts of poly dimethyl diallyl ammonium chloride, 25 to 40 parts of a microbial flocculant, 5 to 8 parts of an aquaculture oxygen supply agent, 9 to 12 parts of a biological enzyme and 7 to 10 parts of cellulose. After the formula is adopted, the microbial flocculant has the characteristics of biodegradability, safety, high efficiency, no toxicity and no secondary pollution, and overcomes the defects of inorganic polymer and synthetic organic polymer flocculants, and finally non-pollution discharge is realized. The poly dimethyl diallyl ammonium chloride is used as the organic water purifying agent and has the characteristics of small use amount, strong flocculation capacity, high efficiency and the like. The oxygen supply agent can rapidly and effectively increase dissolved oxygen in water, improves water quality, adsorbs and degrades organisms in the water and also can effectively sterilize the water.

The invention relates to a strain of bacillus cereus SC2 with the collection number of CGMCC No.3836. The strain of the bacillus cereus SC2 has an obvious water purifying function, three days after sewage is treated by the bacillus cereus SC2 strain, the removal rates of the ammonia nitrogen, nitrite nitrogen and chemical oxygen demand (COD) in the sewage are 70.15%, 94.12% and 43.12% respectively, the pH value in the sewage is stabilized, the dissolved oxygen in the sewage is increased, and the immunity and disease resistance of aquatic animals are enhanced, so that the healthy development of the aquaculture industry is promoted.

The invention provides a submerged plant modularized growth bed and a method for recovering growth of underwater submerged plants. The submerged plant modularized growth bed comprises suspended solids, planting layers, plant layers, a growth substrate layer, a bearing layer and balance weight facilities, the submerged plant modularized growth beds are mutually connected to form an entire piece, micropores are formed in the bearing layer so that roots of the plants can penetrate through, the growth substrate layer adopts planting soil, the periphery of the planting layer is fixedly connected with the periphery of the bearing layer, the planting layers and the bearing layer wrap the growth substrate layer, the suspended solids are fixedly arranged around the submerged plant modularized growth bed, each suspended solid is hollow and is filled with air, and the balance weights are fixedly arranged at the lower end portion of the suspended solids to keep the depth of the modularized growth bed suspending on the water surface. The submerged plant modularized growth bed is reasonable in design, compact in structure, simple to manufacture, low in cost, simple to operate and convenient to manage, and the submerged plant modularized growth bed is degraded along with the growth of the underwater submerged plants, is free of pollution, protects the environment, is wide in application range, is widely popularized conveniently, and is favorable for recovery of the underwater submerged plants in different water areas.