37results about How to "Control water quality" patented technology

The invention provides bait for culturing large brine shrimps and a culturing method thereof. The bait comprises, by weight, 2-4 parts of rice bran, 1-3 parts of wheat bran and 0.5-1.5 parts of activity beer yeast. Agricultural and sideline products are fermented to enable substances which are not assimilated easily by the brine shrimps originally to be changed into substances easy to assimilate, and the bait utilization rate is increased; after being reasonably compounded, the bait can provide more comprehensive nutrition needed by growth of brine shrimp individuals; the beer yeast serves as a single-cell nutrient substance, and provides nutrition for the growth of the brine shrimp individuals by itself; factors such as temperature and salinity are monitored and regulated rigorously, and therefore the brine shrimps can grow easily and normally.

The invention discloses an artificial breeding method for crayfishes in a net cage. The method comprises: selecting the net cage; putting and preparing the net cage; inputting parent crayfishes; feeding the crayfishes; cleaning the net cage; and carrying out breeding management. An artificial inductive method of controlling illumination, controlling temperature, controlling water level, controlling water quality and carrying out reinforced feeding is adopted. Illumination is controlled to be less than 300 Lux, the temperature is controlled at 18-26 DEG C, control of water quality means maintaining stable water level, and control of water quality means maintaining dissolved oxygen in a water body being greater than 5 mg/L. The reinforced feeding means adding an animal feed and an artificial compound feed which accelerate gonad development of the crayfishes, cleaning the net cage periodically, and incubating egg-carrying crayfishes in a centralized manner.

The present invention relates to a drug adding method for non-driving circulation water and the corresponding drug-adding device, which belongs to the industrial circulation water treatment technology. The present invention is characterized in that: the present invention adopts the absorbing negative pressure in the circulation water pump; under the condition of without provided with a metering pump, the drug is added into a circulation water pipe net evenly and continually. Besides, by using of installing water sealing and the matching of each device, the device can not only avoid the empty of the water pump, but also can solve the overflowing of losing of the drug-adding as well as the blocking of the pipeline and so on. The method enhances the utilization ratio for the drug of the circulation water and decreases the operation and maintenance cost for the circulation water system, which is adaptable to the circulation water treatment in each industry; the device for implementing the method is simple with low investment, low operation fee and good economical benefit.

The invention discloses a red swamp crayfish factory breeding technology. The red swamp crayfish factory breeding technology includes the following steps that firstly, a breeding workshop is built; secondly, a multilayer three-dimensional breeding aquarium frame is arranged in the breeding workshop, and each layer of breeding aquarium frame is provided with a plurality of breeding aquariums which are respectively an independent system; thirdly, parent shrimps are put into the breeding aquariums, self-mixed crayfish gonadal development promoting fodder is regularly fed to promote synchronous bulk oviposition of crayfishes, and after oviposition of the crayfishes is finished, shrimps with eggs are uniformly hatched in a hatching aquarium; fourthly, after hatching of zygotes, plankton is fed, after metamorphosis of larvae is finished and the larvae become juvenile crayfishes and leave from parent bodies, the crayfishes can be caught, and breeding is completed. A five-in-one artificial induction breeding technology is adopted to promote synchronous bulk oviposition of the crayfishes, breeding is carried out in a large-scale mode, and the technical problem that breeding seeds are in short supply is solved; meanwhile, due to the adoption of multi-layer three-dimensional full-automatic breeding, the number of emerging seeds per unit area is greatly larger than the number of emerging seeds of cement pit and soil pool breeding.

The invention discloses a deep water cage culture apparatus of sturgeon, comprising a floating platform. A cage body and a semi-enclosed cage are fixedly connected to the inner and outer peripheries of the floating platform respectively; a feeding device is arranged at the top center of the cage body and includes a storage chamber; a feeding bucket with a discharge hole is connected to the bottomend of the storage chamber; a lifting rod coaxial to the feeding bucket is arranged at the top of an inner cavity of the feeding bucket; a brush is mounted at the tail end of the lifting rod; the bottom of the brush is in S shape. The deep water cage culture apparatus of sturgeon can ensure culture water quality, improve culture environment, prevent a water body from being polluted, benefit the enhancement of activity of sturgeon's digestive enzyme, and promote the growth of sturgeon.

The invention discloses a method for rearing parent fishes of ictalurus punctatus. The method comprises the following steps of (1) selecting high-quality parent fishes and putting the high-quality parent fishes into a breeding pond; (2) after the parent fishes are stocked for 5-10 days, starting breeding and feeding, and using fresh fish blocks for feeding from 30 days before spawning of the parent fishes to the breeding period; (3) during the breeding period of the parent fishes, inspecting the activity conditions of the parent fishes late night every day, and when it is found that the parent fishes have chasing reactions on the water surface, putting artificial fish nests into the pond for the parent fishes to lay eggs; and (4) taking out egg masses in the artificial fish nests, putting the egg masses into a water basin filled with pond water, and feeding the egg masses into a hatching room for hatching under the condition of avoiding direct sunlight. The technology for rearing the parent fishes of the ictalurus punctatus is simple and easy to operate, has good promotion effects on optimizing the breeding process, reducing the labor amount and improving the survival and reproductive capacity of the parent fishes, and has good economic benefits and social benefits.

A culturing method for a blue crab egg-carrying crab phase relates to the field of aquiculture. A blue crab egg-carrying crab is placed in a crab apartment and cultured, meaning each blue crab egg-carrying crab is bred in a culturing box; water in the culturing box is filtered, ultraviolet-disinfected and protein-separation processed; in high temperature seasons, a crab apartment system can be placed in an air conditioning room; the culturing water temperature is kept at 22 DEG C to 26 DEG C and salinity is kept at 26 to 30; the water can be circulated for 8 times for each day; water exchanging amount for each day can be 15% to 25% of original water amount according to a volume percentage; one to two astartes are fed to each blue crab egg-carrying crab; food residuals and feces are cleaned for one time each day; a blue crab egg-carrying crab embryonic development process is determined according to embryonic development accumulated temperature and embryo heartbeat times; and to-be-hatched blue crab egg-carrying crabs are moved to a hatching barrel. The culturing method is simple and easy to operate.

the invention discloses a penaeus vannamei breeding method. The method comprises the following steps: firstly, injecting seawater into a disinfected pond, wherein the pond communicates with a water circulation device; before throwing young penaeus vannamei, performing inoculation by using 10-15 million/mL of chaetoceros and 10-15 million/mL of dunaliella salina, wherein the chaetoceros and the dunaliella salina are cultivated by using a nutrient solution, and the nutrient solution comprises the following raw materials: ferric chloride hexahydrate, ethylenediamine tetraacetic acid disodium salt, copper sulfate pentahydrate, sodium molybdate dihydrate, zinc sulfate heptahydrate, cobalt chloride hexahydrate, manganese chloride tetrahydrate, vitamin B1, vitamin H, vitamin B12, vitamin B6 and sea salt; after the water quality is stable, throwing 450-550/m<2> of shrimp fry into the pond; feeding 50-500 grams of feed for every ten thousand of shrimps, wherein 15-20% of the shrimp feed is directly eaten by the shrimps, and the balance of the feed is decomposed by a water treatment device to serve as the nutrition of the chaetoceros and dunaliella salina; meanwhile, keeping the density of the chaetoceros and the dunaliella salina in the pond to be 10-15 million/mL; and performing harvesting in 40-70 days after the shrimp fry are thrown. The penaeus vannamei breeding method provided by the invention is high in breeding survival rate, large in prawn specification and large in yield.

The invention relates to an energy circulating active convention oxygenating ecological floating island. The energy circulating active convention oxygenating ecological floating island comprises a floating table, at least one oxygenating device, a microbial bed and landscape plants. The floating table is fixed to the water surface through a fixing anchor. The oxygenating device and the landscape plants are fixed to the floating table, and the microbial bed is located underwater and connected with the lower surface of the floating table. Electrolysis and vertical convection design is adopted bythe oxygenating device, hydrogen generated by electrolysed water is recycled and converted into electric energy through a hydrogen cell, and electric energy supplementation is carried in combinationwith a solar power supply device. The microbial bed is arranged in water below a floating body, and provides good living space for microorganisms. According to the energy circulating active conventionoxygenating ecological floating island, energy consumption can be reduced through energy circulation, molecular-grade oxygenating is achieved, meanwhile, vertical convection is formed on a controlledwater area, the overall oxygen dissolving of the controlled water area is effectively improved, the vigor of the water is activated, benign ecological balance is auxiliarily built, and water qualityimprovement of the controlled water area and long-term maintenance of energy circulation are achieved.

Disclosed are an STD type technology and a system for recovering condensate water of coal moisture control. The technology includes (1) inducing condensate water from a flash tank into a condensate storage tank, and adding treating agent involving at least one of ammonia water, sodium hydroxide, diamine and sodium phosphate to result in that the condensate water, after reaction of the condensate water and treating agent, has pH of 8-9.5, hardness of 2 Mumol/L and diamine concentration of 20-100 Mug/L; (2) filtering the condensate water after the reaction to remove precipitate generated by reaction of total iron in the condensate water and added agent; and (3) inducing the filtered condensate water into a pure water tank or an oxygen remover in coke dry quenching section for reutilization, wherein content of the total iron is smaller than 50 Mug/L, conductivity of the total iron is not larger than 20 Mus/cm, and the condensate water is introduced into the pure water tank after temperature thereof is adjusted to no larger than 60 DEG C.. The invention effectively utilizes excess heat while recovering condensate water; and simultaneously ensures that the condensate water quality satisfies water requirement of coke dry quenching and eliminates effects of steam pipe net, coal moisture control drier and condensate water pipeline on the water quality.

The invention discloses a rainbow trout culture environment release system for environmental release detection of a nucleic acid vaccine and an environmental release method of the rainbow trout culture environment release system for the environmental release detection of the nucleic acid vaccine, and belongs to the technical field of rainbow trout environment release detection. The rainbow trout culture environment release system for the environmental release detection of the nucleic acid vaccine comprises a first cement pond and a second cement pond, wherein the first cement pond and the second cement pond are arranged in parallel, a plurality of culture ponds and circulating return water reservoirs are arranged in the first cement pond, and a plurality of three-level wastewater treatmentponds are arranged in the second cement pool; a biological filtering device is arranged above the second cement pond, a water output pipe of the biological filtering device is communicated with an ultraviolet disinfecting device, the ultraviolet disinfecting device is communicated with the culture ponds through pipelines, the biological filtering device is communicated with the circulating returnwater reservoirs through circulating water pipes, a steel frame structure is erected above the first cement pond and the second cement pond, and a transparent plastic film and a sunshade net cover the steel frame structure; a stainless steel mesh fence is arranged at the peripheries of the first cement pond and the second cement pond, and a safety door is arranged on the fence. The rainbow troutculture environment release system for the environmental release detection of the nucleic acid vaccine and the environmental release method of the rainbow trout culture environment release system forthe environmental release detection of the nucleic acid vaccine disclosed by the invention are used for the environmental release detection of the nucleic acid vaccine.

The invention discloses a water quality control system of a culturing farm. The water quality control system comprises a liquid level sensor, a temperature sensor, a water pressure sensor, an ozone concentration detecting module, a control module, a sewage treatment control valve module, a water pump control module and a wireless communication module. The liquid level sensor, the temperature sensor, the water pressure sensor, and the ozone concentration detecting module are connected to the input terminal of the control module; and the output terminal of the control module is connected with the sewage treatment control valve module, the water pump control module and the wireless communication module. According to the invention, the water quality and sewage processing of the culturing farmcan be controlled and the intelligence degree of the culturing farm is increased, so that the water is saved and the culturing quality is improved.