Purification method and device of cold-water fish cultivation water body in mountain gully watershed

Abstract

The invention discloses a purification method of a cold-water fish cultivation water body in mountain gully watershed. The method comprises the following process flows: 1) dispersing a biological flocculating agent by utilizing the characteristic that drop water at a potential difference water inlet is torrent and carrying out biological flocculoreaction; 2) filtering water flow obtained by biological flocculoreaction with ceramsite supported microorganism; 3) returning the water flow filtered by the ceramsite supported microorganism back to a fishpond; 4) entering turbid water obtained afterbiological flocculoreaction and pond washing water for the fishpond into constructed wetland; and 5) carrying out ecological purification on effluent from the constructed wetland and then dischargingthe purified effluent. The invention also relates to a device for realizing the method.

Description

technical field [0001] The invention relates to an aquaculture water treatment device, and more particularly relates to a method for purifying cold-water fish breeding water in mountainous valleys. [0002] The present invention also relates to a device for realizing the above purification method. Background technique [0003] In recent years, the fishery economy in mountainous valleys has developed rapidly. The development of some cold-water fish industries in the valleys has become an important industry for local economic development. A series of cold-water fish industry belts, such as food, barbecue and catering, have the reputation of a stream of rainbow trout food, and have become a local pillar industry, which has effectively promoted the development of the local economy. However, for many years, farmers have not standardized breeding, feed and fish medicine have been put in disorderly, and fish feces and excreta have been discharged directly without treatment, result...

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Problems solved by technology

[0004] At present, the commonly used treatment methods for cold-water fish farming in mountainous valleys include aeration, sedimentation, filtration, bio-ecological restoration technology, chemical agent injection technology, ecological floating bed technology, membrane separation technology, stable chlorine dioxide technology and SBR sewage purification technology, etc. , but these single technologies have problems such as limited pollutant removal capacity, high investment and operation costs, and difficult management and maintenance. Therefore, it is necessary to develop a treatment combination system suitable for cold-water fish farming in mountainous valleys

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