Treatment equipment for high-density breeding circulating water

Abstract

The invention relates to treatment equipment for high-density breeding circulating water. The equipment comprises a breeding tank, an aerating unit, a circulating water treatment tank adjacent to the breeding tank, a membrane filter unit and a water return unit. The breeding tank is an octagonal tank body encircled by a plurality of base plate units and is provided with an overflow weir; the aerating unit has a plurality of gas supply pipes to provide sufficient dissolved oxygen to a water body in the breeding tank and meanwhile to float, remove and lift residual bait and excrement out of the tank body; the circulating water treatment tank is provided with a nitration reaction chamber and a membrane filter chamber; the nitration reaction chamber communicates with the overflow weir and is filled with buried nitrifying bacteria; the membrane filter unit is arranged in the membrane filter chamber and has at least a plurality of disc-shaped membrane bags and a water yielding pipe; the water return unit has a suction pump which is connected to the water yielding pipe and a water return pipe which is connected to the suction pump and extends to the breeding tank.

Description

technical field [0001] The present invention relates to a kind of treatment equipment for aquaculture water, and especially relates to a kind of high-quality equipment that can provide good water quality to improve the density and survival rate of biological aquaculture, and the aquaculture tank occupies a small area and can be dismantled, cleaned and expanded in a timely manner. Treatment equipment for density breeding circulating water. Background technique [0002] With the gradual depletion of offshore fishery resources and the limitation of pelagic fishery development, my country's fishery has gradually shifted to aquaculture development in recent years. However, due to the small land area of ​​Taiwan and the subsidence problem caused by over-pumping of groundwater, traditional fishery The aquaculture method caused a huge bottleneck in aquaculture, so the closed recirculating aquaculture system came into being. [0003] This kind of aquaculture system usually puts the a...

AI Technical Summary

Problems solved by technology

[0005] 1. Since high-density aquaculture needs to feed a large amount of bait to maintain the growth of fish, shrimp and shellfish, a large amount of residual bait and biological excrement will often accumulate at the bottom of the pond. If these residual bait and excrement cannot be removed in real time, they will be It will cause the concentration of nitrous acid and ammonia nitrogen in the pool water to increase, which will make the water quality oxidized and affect the breeding effect

[0006] 2. In order to remove ammonia nitrogen in aquaculture water, the previous recirculating aquaculture system also needs to cooperate with biological filter beds, and use biological filter beds to cultivate nitrifying bacteria for nitrification, because the time the water stays in the biological filter bed affects its removal of ammonia nitrogen One of the key factors of performance, therefore, the biological filter bed will inevitably require a certain use area, and the nitrification needs to consume a lot of oxygen, which means that a large amount of aeration must be continuously provided to the biological filter bed, which is extremely energy-consuming

[0007] 3. In the past, the breeding tanks were usually fixed with cement or stainless steel, which could not expand the size of the tank or move them in a timely manner according to the actual needs of the industry, which greatly restricted the development of the breeding base.

[0008] 4. Based on the requirements of the breeding environment, the walls of fixed-type breeding tanks must be cleaned regularly, otherwise bacteria and algae will easily breed and reduce the survival rate of farming. However, because the general breeding tanks cannot be disassembled, they are easy to clean If the cleaning work is inaccurate, the tank wall will easily adhere to biological mucous membranes and produce viruses, which will increase the incidence of fish

[0009] 5. In the past, water purification equipment must be equipped with a multi-stage treatment process. The process usually uses gravity sedimentation and sand filtration to screen out larger particles of solids in the water, and then uses biological treatment methods (such as aerated biological filter bed, rotary biological tray or fluidized bed) to remove ammonia nitrogen and organic matter in water, and then use microporous materials to filter out suspended particles in water and sludge produced after biological treatment, and then add chemicals for disinfection and sterilization, and then send it to the salt adjustment tank Adjust the PH value, and finally send it to the breeding tank for recycling after aeration and oxygenation. Therefore, its water purification equipment occupies a huge breeding site. In addition to the high cost of the site, the overall equipment cost is also extremely alarming. Not conducive to the long-term operation of farmers

[0010] 6. In addition, in addition to the high energy consumption of the previous recirculating aquaculture system, the cost of regular replacement of filter materials is also a high cost, so the operation and maintenance costs of the entire system are also quite high, requiring professional aquaculture operators to competent

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