Treatment method and system for cold water fish breeding water in northern mountainous areas

Abstract

The invention discloses a treatment method and system for cold water fish breeding water in northern mountainous areas. The method comprises water source purification and wastewater purification. A water source purification process comprises the following steps that: river water is pumped by a water pump, flows through a first filter screen, enters a first physical treatment area with zeolite andanthracite as media, and is disinfected by an ultraviolet sterilizer. A wastewater purification process comprises the steps that breeding wastewater enters a biological treatment area through a secondfilter screen, is treated with a microbial agent, then enters a second physical treatment area with slag as a medium for treatment and then is discharged, wherein the second physical treatment area is covered with soil having a thickness of 20-30 cm to plant emergent aquatic plants. By means of the method, impurities and harmful substances in a water source can be effectively removed, a clean water source can be continuously provided for cold water fish breeding; and in addition, pollution of wastewater generated after cold water fish breeding to a water body can be reduced by purifying breeding wastewater, water quality is improved, and technical support is provided for purification and restoration of the water body.

Description

technical field [0001] The invention belongs to the technical field of aquaculture water treatment, and in particular relates to a method and system for treating cold-water fish breeding water in northern mountainous areas. Background technique [0002] At present, cold-water fish farming is still dominated by flow-water farming, with simple farming equipment, weak water quality control capabilities, and few methods. Most cold-water fish farming systems do not apply circulating water technology, resulting in a large amount of waste of water resources, and the water from downstream farming is upstream farming. drain. Extensive farming mode brings a large amount of farming wastewater, feces and residual bait discharge, especially when it freezes in winter, the self-purification ability of the water body is weak, which seriously pollutes the environment. Therefore, source water purification is very necessary. [0003] Although there are many methods for aquaculture water trea...

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Problems solved by technology

[0003] Although there are many methods for aquaculture water treatment, there is a lack of water treatment systems suitable for outdoor aquaculture in northern mountainous areas.

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