Water cube biological packet

Abstract

The invention relates to a water cube biological packet. According to the invention, PE rigid plastic filaments with the density of 0.6g / cm<3> are intersected and welded to form a 55cm high cylindrical unit with its diameter being 5.5 cm; 100 cylindrical units are welded respectively along the vertical and transverse directions of a horizontal plane to form a water cube biological packet; and the biological packet is suspended and arranged on a rack of a recirculating aquaculture water filtration system. For instance, the specific surface area of a 0.55m*0.55m*0.55m water cube biological packet can reach 200m<2> / m<3>. As aquaculture current flow through multilayer and multi-channel PE plastic filament mesh grids, beneficial bacteria such as nitrobacteria can adhere to the surface of the water cube biological packet, thus absorbing and degrading pollutants such as organic matters, ammonia nitrogen, nitrite nitrogen and phosphate in water and leading to high water treatment efficiency. When in use, the water cube biological packet, which is suitable for high-density recirculating aquaculture, only needs to be suspended and arranged on the rack of the recirculating aquaculture water filtration system.

Description

technical field [0001] The invention belongs to the technical field of aquaculture equipment, and relates to a water cube biological bag used for biological filtration of aquaculture water in high-density circulating aquaculture. Background technique [0002] In the process of high-density recirculating aquaculture eel, because the culture water contains the feces and residual bait of farmed animals, these organic matters undergo chemical changes in the water, producing ammonia nitrogen and other toxic substances, which affect the growth of farmed animals. If the above-mentioned aquaculture water is to be reused, it must be filtered and then treated by biological methods to reach the safety level for the growth and life of aquaculture animals. [0003] Reusing aquaculture water can not only reduce environmental pollution, save water, but also save a lot of energy in winter. The biological method treatment device of the prior art is to fill active carbon, coral sand, fluors...

AI Technical Summary

Problems solved by technology

But this biological treatment device for aquaculture water has the following disadvantages: due to the huge volume of tanks or tanks with fillers, such as a cement tank, it is generally 2 meters deep, 2 meters wide, and 3 to 5 meters long. Filling the above packing, because of its bulky size, even if there are multiple water inlets and outlets, the water flow will be uneven and there will be too many dead ends. It is not easy for the growth and reproduction of nitrifying bacteria in the dead ends where the water flow does not reach. It is not easy for nitrifying bacteria to remain in the place, which will seriously affect the biological treatment effect of water; secondly, because the tank or tank for biological treatment is nearly 2 meters deep, in the deep water, because it is not easy to exchange oxygen with air, it will Affect the life and reproduction of nitrifying bacteria near the place, and also reduce the biological treatment effect of water; third, this huge tank or tank needs to be cleaned after a period of operation, and about ten cubic meters or more All the fillers are turned out to be cleaned, which is very troublesome and needs to be stopped for cleaning; fourth, because the volume of the tank or tank is too large and the water flow is not uniform, in the biological process, the product is easy to block the waterway. After a period of time, it is necessary to use pressure water to backflush the tank or tank, and as a result, cavities are likely to occur, which will short-circuit the water flow and reduce the biological treatment effect of water.

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