67results about How to "Improve water quality conditions" patented technology

The invention discloses a rice field ditch integrated ecological high-value rice and soft-shelled turtle planting and breeding method which comprises the following steps: 1, ruralizing a rice field and installing fences; 2, plowing the rice field; 3, transplanting rice; 4, putting soft-shelled turtles in the rice field and raising the soft-shelled turtles; 5, conducting field management; and 6, harvesting the rice and the soft-shelled turtles in good time. The method has the advantages that: 1, the foundation works of the rice field is optimized without reducing the area of the rice; 2, the foundation works of a rice ditch is optimized without destroying the structure of the rice field; 3, the landscape of the rice field is optimized to provide a good growth environment for the soft-shelled turtles; 4, a ladder type culture method is adopted to increase the planting and breeding density; and 5, the economic benefit of the rice field in a unit area is greatly increased.

The invention relates to a method for treating and recycling circulating water and sewage, which comprises the following steps of: adding an oxidative bactericide and a catalyst into the sewage for chemical reaction, performing flocculation precipitation on reacted wastewater, adding wastewater subjected to flocculation precipitation into a membrane system for treating, and recycling recycled water subjected to membrane treatment to a circulating water system. Compared with the prior art, the method can effectively reduce the chemical oxygen demand (COD) of the wastewater, can reduce the content of bacteria in the wastewater, and meets the requirement of recycling the treated wastewater to the circulating water system.

The invention discloses a wild rhinogobio ventralis continental rise pond net cage domestication method. The method includes four key technical links of the link 1, domestication pond water quality cultivation and regulation and control, specifically, applying liquid state organic fertilizer, composite probiotics and bottom material improvers at regular intervals to carry out water quality cultivation and the regulation and control, the link 2, net case establishment, and specifically a net case is mainly composed of knotless netting and a stainless steel framework and meanwhile is provided with an aeration flow generating device, the link 3, polyculture of wild rhinogobio ventralis and megalobrama pellegrini, specifically, adopting the method that artificial culture breeds are cultured in a matched mode outside the net cage to carry out domestication of wild fishes, and the link 4, ingestion domestication, specifically, adopting the method of food calling first and domestication feeding second, namely, feeding biological baits first then gradually feeding artificial mixed feed. According to the method, domestication of the wild fishes is carried out in a manner that the flow generating type net case is erected in a continental rise pond, meanwhile, the technologies of the water quality regulation and control, polyculture and live bait food calling are utilized comprehensively, and therefore the adaptability of the wild fishes to the culture environment can be promoted, the survival rate of domestication can be improved, and the method has wide application prospect.

The invention discloses a recycling method of papermaking advanced treatment wastewater based on chemical decalcification. The recycling method comprises the following steps of chemical decalcification, filtering, electrolysis, membrane separation (ultra-filtration/MBR) and desalination. By combination of a chemical decalcification technology, an electrochemical technique and a membrane technology, 70-85% of papermaking advanced treatment wastewater can be recycled after being processed. Thus, wastewater emission is reduced; environmental pollution of the wastewater is avoided; waste of water resources is reduced; and the cost of regenerated circulating water is lower than the price of running water. Therefore, the recycling method is economical and reasonable; good economic benefit is generated; water consumption targets of tons of paper and wastewater discharge targets are greatly reduced; and the economic and technical indexes of enterprises are improved.

The present invention relates to an ozone heterogeneous catalytic oxidation moving bed reactor and a refractory wastewater treating method therefor. The reactor consists of a water inlet system, an ozone generating system, a catalytic oxidation reaction system, a gas recovery system, a catalyst washing system and a water outlet system. The catalytic oxidation reaction system comprises a reactor and a catalyst. The catalyst washing system comprises a stripper, a feed pipe, a blanking outlet, a washing wastewater discharging pipe and a catalyst cleaning chamber. The water inlet system consists of a water inlet pipe and a water distributor. The water outlet system consists of a water outlet slot and a water outlet pipe. The gas recovery system consists of a three-phase separator, a gas collection chamber, a gas collecting pipe and a gas breaker. In comparison with the prior art, the moving bed reactor provided by the present invention is less in occupied area, low in investment and operating cost, good in treatment effect, and convenient in operational management, and is capable of greatly improving the biodegradability of refractory wastewater, providing a good water condition for the follow-up biological treatment and in addition removing 40% of organic substances.

The present invention discloses one kind of Epinephelus coioide culturing method and aims at provides Epinephelus coioide culturing method with high efficiency, no environmental pollution and adult fish eating safety. The method includes constructing indoor culture pond and biological filtering pond, throwing Epinephelus coioide fry of 50 g weight into the culture pond and raising with bait while controlling the conditions essential for Epinephelus coioide to grow. The indoor raising method has no escape of Epinephelus coioide, fast growth and high raising efficiency. The communicated indoor culture pond and biological filtering pond can ensure high water quality, less fish disease, no environmental pollution and adult fish eating safety. The technology of the present invention is applicable in culture of other fish.

The invention relates to a Microbial Product which can decompose the organic pollutant in farming waters rapidly and digestion the content of ammonia nitrogen and nitrite in water in time with using nitrobacteria, Bacillus endospores and other bacteria. The characteristic of this product was that the percent by weight before compound was Nitroso-bacteria 20%-40%, nitrifier 20-40%, Bacillus licheniformis 20%-60%. This invention using screening environments and adding concentration technology, at the same time combine directional concentration with fermentation to finish the process of enrich and enlarge the nitrifier by one step . This can reduce the culture time of nitrifier obviously, so that the using of nitrifier would from laboratory to industrialization. The ten times amount about Nitrobacteria than liquid product can complement and assort with high concentration Bacillus endospores to maintain the water with the best farming condition of rich, live, fecund and clear. This product can basically replaced the chemical medicine using in breed aquatics and produce the organic farm produce with green, safe and no antibiotic residue.

The invention relates to an ecological prawn residual feed pollution control device. The ecological prawn residual feed pollution control device comprises a buoy (1), a wing (2) and a mesh cage (4), wherein the buoy (1) is arranged on the top of the device and is used for lifting and spreading the whole device by means of the buoyancy of sea water, the wing is connected between the buoy (1) and the mesh cage (4), prawn feed is thrown into water from holes of the wing, and the mesh cage (4) comprises a feed tray (3), a middle tray (5) and a bottom net tray (7). According to the ecological prawn residual feed pollution control device, pollution, caused by residual feed, to organic materials in a prawn pond is effectively relieved through reduction of the residual feed pollution area, repeated use of the residual feed and a biological stereoscopic aquaculture method.

The invention relates to a crab roe culturing method in a high density crab roe culturing tank of blue crabs, relating to an aquiculture method, and providing a crab roe culturing method in a high density crab roe culturing tank with high culturing density, high survival rate and high weight growth rate during the culturing period, and the method can enhance the culturing quality of the blue crabs. The crab roe culturing facilities: the crab roe culturing tank made of stones and bricks, etc., with the wall height of the crab roe culturing tank lightly lower than that of a neap tide, the tank depth of 1.5 to 2.0m, and area of 200 to 500m<2>; the crab roe culturing tank is provided with a water inlet and a water outlet, the bottom of the tank is a layer of sand with a shielding object positioned, the tank mouth is tightly covered with a steel sheet, and the water in the tank is replaced twice every day when the tide comes. The crab roe culturing measures are that: mated female crabs with complete appendages are divided into two kinds: one kind is just mated female crabs, and the other is the female crabs mated for one month, and the two kinds are cultured respectively, with a culturing density of the female crabs being 5 to 10crabs/m<2>; the daily feeding quantity of small fishes and shrimps is controlled between 5 to 12 percent of the total weight of the blue crab, and that of low value small shellfishes is controlled between 20 to 35 percent of the total weight of the blue crab, and all foods are cast once respectively in the morning and evening.

The invention provides a rice and shrimp ecological co-cultivation method with stable water quality and low diseases and insect pests. The method comprises the following steps: (1) paddy field selection and transformation are performed; (2) rice cultivation is performed; (3) young shrimp throwing-in and feeding management are performed: snails, mussels and clams are thrown into a circular shrimp ditch; a compound microbial agent is applied; and juvenile shrimps are thrown in after seedlings turn green; and (4) at the juvenile shrimp stage, a water depth of the paddy field is 50-60 cm; at the adult shrimp stage, a water depth of the paddy field is 65-70 cm; an EM bacterial agent A is applied to the annular shrimp ditch when the weather is 32-33 DEG C high-temperature weather for 5 consecutive days or more; and an EM bacterial agent B is applied to the annular shrimp ditch when the weather is rainy weather for 5 consecutive days or more. The method can more reasonably control the water quality and water level of co-cultivation, effectively reduces diseases and insect pests, improves the growth quality of rice and shrimps, and realizes rice and shrimp ecological co-cultivation with high and stable yield.

The invention relates to an inner-circulation aeration device for a fish culture pond and a use method of the inner-circulation aeration device, and belongs to the technical field of culture. The device comprises a base, a submersible pump, a support, a water taking tube, a tee tube, an air inlet tube, a water outlet tube, a jet pipe, a remote control switch and a cable, wherein the submersible pump is placed on the base and connected with the water taking tube, the water taking tube is connected with the air inlet tube and the water outlet tube through the tee tube, one horizontal port of the tee tube is connected with the water taking tube, the other horizontal port is connected with the water outlet tube, the port perpendicular to the water surface is connected with the air inlet tube, and the water taking tube and the water outlet tube are connected on the same straight line through the two horizontal ports of the tee tube. By means of the inner-circulation aeration device arranged in the pond, exchange of water on the upper and lower layers and aeration are realized, culture water in the pond is pushed to form inner circulation flow, concentrated cleaning of large-particle culture waste is convenient, the fine fish growth environment is created, the disease rate caused by substrate decomposition and water degradation in the pond is greatly reduced, the culture survival rate and the culture yield of the fish pond are increased, and the purposes of quality and efficiency improvement of pond culture production are achieved.

The invention relates to a soil-improving and efficiency-increasing method for co-cultivating rice and crayfish. The method includes: furrow type water management is adopted during rice planting; fertilizer application is reduced during rice planting, the application quantity of N is 4-8kg/mu, the nitrogen fertilizer is applied in three times to serve as the base fertilizer, tiller fertilizer andearing fertilizer, the application quantity of the base fertilizer and the tiller fertilizer accounts for the total application quantity of N, phosphorus fertilizer and potassium fertilizer are only applied when the base fertilizer is applied, the application quantity of P2O5 is 3-5kg/mu, and the application quantity of K2O is 5-8kg/mu; regulating cultivation furrow water level to promote the crayfish to make holes in a time division and layering manner, and cultivation furrow water can be used as the compensation fertilizer of rice planting. The method has the advantages that the furrow typefield structure, the rice and crayfish co-cultivation, the fertilizer application reduction and the cultivation furrow water serving as the supplementary fertilizer are used in a coordinated manner, rice field soil breathability can be improved, fertilizer cost can be reduced, fertilizer utilization efficiency can be increased, rice field non-point source pollution can be reduced, and the rice soil environment can be improved; the cultivation furrow water level is regulated to promote the crayfish to make holes for reproduction in a time division and layering manner, the centralized young crayfish emergence problem in the next year can be avoided, and crayfish yield can be increased effectively.

The invention belongs to the technical field of genetic breeding of crayfishes, and discloses an implementation method and system for large-scale directed mating of red claw crayfishes. Under the condition that the source and genetic background of a breeding population are unknown, directed mating group design is scientifically and efficiently completed by means of molecular marker information, sothat a certain genetic diversity of the population can be maintained while inbreeding is avoided. According to the implementation method and system, a filter device and a conical collector are employed to realize automatic collection of pollutants generated during aquaculture, and semi-automatic sewage discharge is realized by combining with a timing valve, and compared with a way of manual siphon sewage discharge, the semi-automatic sewage discharge saves manual labor, thoroughly discharges sewage, and reduces water consumption for sewage discharge; a main water inlet valve is used in coordination with independent float level switches of aquaculture tanks, thus realizing accuracy and automation of adding water into aquaculture tanks in batches; and installation of overflow ports guarantees that the water in the aquaculture tanks cannot be excessive, so that not only is water saved but also manual labor of a water adding link is saved, and standardization and convenience of the implementation link of large-scale directed mating of the red claw crayfishes are realized.

The invention discloses a soft-shelled turtle pond water quality purification device and a purification method thereof, and belongs to the technical field of soft-shelled turtle culture, the soft-shelled turtle pond water quality purification device comprises a culture pond, a mud discharge pipeline, a treatment pond, an auxiliary mechanism, a splashing mechanism, a mud discharge mechanism, a purification mechanism, a screening mechanism and a separation mechanism, the treatment pond is arranged beside the culture pond, and the mud discharge pipeline is communicated between the culture pond and the treatment pond; the auxiliary mechanism is rotatably mounted in the culture pond, the splashing mechanism is slidably mounted on the culture pond, the sludge discharging mechanism is mounted at the inner bottom of the culture pond, the purifying mechanism is mounted in the treatment pond, the screening mechanism is mounted in the treatment pond, the separating mechanism is mounted in the treatment pond, and a silt backflow pipeline is arranged between the separating mechanism and the culture pond. According to the soft-shelled turtle pond water quality purification device and the purification method thereof, quick lime is regularly added into the culture pond, pollutants in the culture pond are purified, and then silt and purified water are recycled.

The invention discloses a multi-tier lifting adjustable pond for crab farming, comprising a pond body; the pond body includes a first pond, a second pond and a third pond; the second pond and the third pond are positioned above the first pond and are connected with the same through support posts, the center of the second pond is provided with a through hole, the through hole may be connected and/or disconnected with the third pond, the third pond, the second pond and the first pond may be interconnected through a ladder, the first pond is provided with a foundation, and the foundation is fitted with hydraulic devices connected with the support posts. The multi-tier lifting adjustable pond for crab farming can save farmland, provides multiple tiers of adjustable aerial farming ponds based on existing farming area so that exiting farming area is enlarged and aquaculture income is increased, and is good in structural stability, convenient to use and worthy of popularization.

The invention provides a water quality monitoring and improving device based on a watercourse ecological revetment and a method thereof. The water quality monitoring and improving device comprises a plurality of water quality improving devices and water quality monitoring devices which are arranged on the ecological revetment at intervals. Each water quality improving device comprises a support device, a work box, a sediment stirring device, an aeration device, a chemical adding device and a collection device. Each water quality monitoring device comprises a sampling device, a water quality analyzer and a processing controller, wherein the sampling device is arranged below the corresponding work box to be used for obtaining a water sample in a watercourse, the water quality analyzer is arranged in the work box and is used for analyzing data of the water sample, and the processing controller is connected with the water quality analyzer and the corresponding water quality improving device and is used for controlling the water quality improving device to improve water quality according to the data of the water sample. In conclusion, the water quality monitoring and improving device based on the watercourse ecological revetment and the method thereof have the advantages of being novel in structure, perfect in process, good in improving effect and the like.

The invention discloses an adjustable lifting multilayer crab culture pond which comprises a pond body. The pond body comprises a first pond, a second pond and a third pond, the third pond and the second pond are positioned above the first pond and connected with the first pond through a supporting column, the third pond is positioned in a through hole formed in the middle of the second pond, thethird pond, the second pond and the first pond can be connected with each other through a ladder, the first pond is provided with a foundation, and a hydraulic device is mounted on the foundation andconnected with the supporting column. The pond can give priority to farmland saving, a plurality of adjustable aerial culture ponds are added based on the area of an existing culture pond, so that thearea of the existing culture pond is increased, aquaculture income is improved, and the adjustable lifting multilayer crab culture pond is stable in structure, convenient to use and worthy of popularization.

The invention provides an ecological breeding system for grass shrimps. The system comprises a breeding area, a plant area, a water qualification area A and a water qualification area B, wherein watertreated in the water qualification purification area B flows back to the breeding area through a pipeline; the breeding area is inoculated with vallisneria spiralis, hydrilla varticillata and ceratophyllum demersum, the ratio of planting areas of vallisneria spiralis, hydrilla varticillata and ceratophyllum demersum is 1:(5-8):(5-7), and interplanting is performed; acorus calamus, cress and laverare planted in the planting area, the ratio of planting areas of acorus calamus, cress and laver is 1:(5-7):(2-3), and interplanting is performed; activated carbon is placed in the water quality purification area A, effluent from the area A is drained to the area B, a nitrobacteria solution and bacillus subtilis are added to the area B, the content of nitrobacteria in water reaches (1*10<5>)-(2*10<5> cfu/mL, and the content of bacillus subtilis is (1*10<6>)-(2*10<6> cfu/mL; and a filtering net is arranged at a water outlet of the area B. With the adoption of the method, circulation of breeding water can be realized, resources are saved, intake of the grass shrimps is effectively promoted, growth of the grass shrimps is accelerated, and the weight of the grass shrimps can reach 28-36 g after the grass shrimps are bred for 90 days.