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

The invention discloses a directive breeding method for culturing pond diatom in fresh water. By regulating the contents of nitrogen, phosphorus, silicates and minor elements in the culture pond and considering the pH value and diatom inoculation concentration, favorable algal facies using diatom as the dominant species are directively bred in the pond, thereby promoting the mass reproduction of the pond diatom, preventing the outbreak of the high-yield culture pond blue algae, and increasing the culture yield. Besides, the method can effectively regulate the water quality, reduce the disease incidence rate and enhance the culture yield and culture product quality. The method is simple, does not need any supporting facility, and can be popularized and applied more easily.

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.

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 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 provides a constant-temperature swimming pool beneficial to dirt removal, and relates to the technical field of water temperature control and swimming water cleaning of swimming pools. The constant-temperature swimming pool beneficial to dirt removal comprises a swimming pool body. The swimming pool body comprises a swimming pool bottom surface and swimming pool side walls. A horizontal sediment heating water ditch is formed in the bottom surface of a deep area of the swimming pool. One or more longitudinal sediment heating water ditches which are perpendicular to and communicatewith the horizontal sediment heating water ditch are arranged in parallel. Conduction oil pipes are arranged in the horizontal sediment heating water ditch and the longitudinal sediment heating waterditches, and multi-hole cover plates and single-hole cover plates are arranged above the conduction oil pipes. A filter device and a conduction oil furnace station are arranged at appropriate positions of the swimming pool. According to the constant-temperature swimming pool beneficial to dirt removal, the longitudinal and horizontal sediment heating water ditches and the filter device are arranged so that dirt containing bacteria can be automatically collected and removed; conduction oil is used for heating a water source of the swimming pool, so that the temperature of swimming water is kept constant; a whole system can be set through the conduction oil furnace station to be automatically controlled to work, so that the labor intensity of workers is low, regular supplement of the swimming water source and replacement of water in the whole swimming pool are avoided, and the water quality, water temperature and bacteria can be effectively controlled; and a small dose of chemicals is added, the operating cost is low, the structure is simple, energy is saved, and environmental friendliness is achieved.

The invention belongs to a floating body which is arranged on the water surface and is used for plant cultivation, and particularly relates to an overwater plant cultivation raft and a manufacturing method thereof. The overwater plant cultivation raft mainly comprises floating bodies and a raft body... The overwater plant cultivation raft is characterized in that two floating bodies are respectively connected with two ends of the raft body; and a net body is arranged in the raft body to form a floating planting bed. The cultivation raft can adjust the root depth under water according to the growth need of cultivated plants, and is applicable to the cultivation of multiple kinds of aquatic plants; and according to the overwater plant cultivation raft, the water quality is improved, the additional benefits can be produced, and the need for sustainable development is met.

The invention relates to an energy circulation active convection oxygenation ecological floating island, which comprises a floating platform, at least one oxygenation device, a microbial bed and landscape plants; the floating platform is fixed on the water surface by fixed anchors; On the platform, the microbial bed is located underwater and connected to the lower surface of the floating platform; the aeration device adopts electrolysis and up-and-down convection design, uses hydrogen fuel cells to recover and convert hydrogen generated by electrolysis of water into electrical energy, and combines solar power supply devices for electrical energy Supplement: The layout of the microbial bed and the water body below the floating body provide a good living space for the microorganisms. The present invention can reduce energy consumption through energy circulation, realize molecular-level oxygenation, and at the same time control waters to form up-and-down convection, effectively improve and control the overall dissolved oxygen in waters, activate the vitality of water bodies, assist in building a benign ecological balance, and realize the improvement of water quality in controlled waters and The energy cycle is maintained for a long time.

The invention relates to a cleaning system for a selection plating product developing process. The system comprises a developing bath, a releasing and rinsing bath, a neutralization bath, a front rinsing bath, a cleaning bath and a rear rinsing bath, wherein the front rinsing bath comprises a plurality of first branch rinsing baths which can be filled with ionized water from front to back; and the rear rinsing bath comprises a first rear rinsing bath group and a second branch rinsing bath group from front to back, wherein the first rear rinsing bath group comprises a plurality of second branch rinsing baths and can be filled with municipal water, and the second branch rinsing bath group comprises a plurality of third branch rinsing baths and can be filled with deionized water. The system also comprises a temporary storage cylinder, wherein the front rinsing bath and the second rear rinsing bath group are respectively connected with the temporary storage cylinder and respectively used for supplying deionized water to the temporary storage cylinder; a sodium bicarbonate solution is supplied to the temporary storage cylinder; and the temporary storage cylinder is connected with the neutralization bath and used for supplying neutralizing liquid to the neutralization bath. The cleaning system for the selection plating product developing process can be used for controlling water quality of each section and cleaning, is advantageous to smoothly removing flowing slag, and can be used for solving the problem that a flexible printed circuit board cannot be clearly cleaned and increasing the utilization rate of deionized water.

The invention discloses an ecological culture method of bait for brevifilis fry. The method comprises the following steps: A, constructing a bait pond; B, disinfecting the bait pond; C, applying fertilizer, namely, applying 8 to 12kg of special fishing fertilizer at every 667m<3>, and then compensating 8 to 12g of urea and 0.4 to 0.6g of superphosphate at each cubic meter in every two weeks; D, introducing young water earthworm, namely, draining water from the bait pond in March, uniformly spreading young water earthworm based on the standard of 0.4 to 0.6kg / m<2> to the bottom of the bait pond, and then adding water being 5cm in depth to cover the young water earthworm; E, ecologically managing, namely, adding 47-53kg of snails at every 667m<2> to control the water quality, and overturning the pond once through a rake at every 15 days; F, daily managing; and G, collecting once every 30 days at night, namely, adding cold water to the bait pond, irradiating through light to attract water earthworm to gather, and then collecting through a mesh bag formed by 40-meshes polyethylene fiber mesh cloth.