Filter element for Freshwater aquaculture
Bluslot customized wedge wire screen filter element specially used in Freshwater aquaculture
Freshwater aquaculture refers to the production of raising and breeding aquatic economic animals (fish, shrimp, crab, shellfish, etc.) and aquatic economic plants by using ponds, reservoirs, lakes, rivers and other inland waters (including brackish water). It is an important part of inland aquaculture. The breeding objects are mainly fish. The cultured shrimp include Macrobrachium rosenbergii and Hainan prawns, and the cultured crab is mainly river crab. Freshwater cultured fish in China mainly include black carp, grass carp, silver carp, bighead carp, carp, crucian carp, bream, bream, dace, non crucian carp and other economic fish.
Generally, the area is small and widely distributed; It is suitable for intensive cultivation and has a high degree of intensification, which is conducive to manual management and control; Mainly fish culture, with high production level; The output is relatively stable, the investment is small and the income is large. It can be divided into pond culture, lake culture, river culture, reservoir culture, paddy field culture, industrialized culture, cage culture, micro flow culture, etc; According to the degree of intensification, it can be divided into rough culture, semi intensive culture and intensive culture.
Pond water body is small, water quality is easy to control, and breeding technology is easy to master. It has always been the main way of mass fish culture. Pond fish culture has the characteristics of still water fish culture. It is suitable for mixed culture of different habitat habits and feeding habits. It can make full use of water bait. At the same time, it can also use the method of fertilization to cultivate natural bait, which is especially suitable for the current agricultural situation of developing countries.
Various types of reservoirs are used to breed fish. In small farmland irrigation reservoirs, where escape can be prevented and fishing is easy, pond fish culture can be adopted. Generally, large plain reservoirs are often operated by lakes and rivers. Large comprehensive reservoir is mainly used for breeding and protecting fish resources, supplemented by a small amount of artificial stocking. Building a dam or blocking net in the bay of the reservoir, separating it from the main part of the reservoir, and raising fish in the blocked bay can effectively improve the fishery output of the whole reservoir.
With the rapid development of aquaculture in China, various advanced water treatment technologies have been widely applied, such as sand filtration, microbial purification, UV disinfection, foam separation and so on. However, with the popularization and application of industrialized closed circulating water aquaculture equipment in actual production, the production conditions of high-density and small water body have more strict requirements on water quality. Therefore, the application of ozone with high efficiency and fast characteristics for water quality treatment technology came into being.