Method for purifying rich nutritive water

Abstract

The method of purifying entrophic water purifying method includes planting floating vegetation common water rathathinth to absorb entrophic salt, raising goose to eat partial common water rathathinth and maintain common water rathathinth covered area accounting for 20-70 %, and raising fish to eat plankton, so as to constitute one floating vegetation-goose-fish system. The method can purify water while producing goose and fish.

Description

technical field [0001] The invention relates to water body purification, in particular to a method for purifying eutrophic water body. The method can effectively improve the water body environment and produce economic animals such as fish and geese, and belongs to the technical field of environmental protection and breeding. Background technique [0002] Eutrophication is an abnormal phenomenon in which the primary productivity of aquatic ecosystems increases due to excessive enrichment of nitrogen, phosphorus and other nutrient elements in lakes, reservoirs and other water bodies. Although eutrophication is a natural process, human activities (such as direct discharge of a large amount of domestic sewage into water bodies) may accelerate this process, and eutrophication in this case is called artificial eutrophication. The direct consequence of eutrophication has caused the death of a large number of fish, and has adverse effects on industria...

AI Technical Summary

Problems solved by technology

The respiration of algae and the decomposition of dead algae consume a large amount of oxygen, causing the water body to be in a state of severe anoxic state, and decompose toxic substances, thereby causing serious adverse consequences to the water quality; for the treatment of eutrophic water bodies, generally adopt Restoring aquatic vegetation in water bodies, or using wetland ecosystems to treat eutrophic water bodies, but the speed is slow, the cost is high or the land occupation is large

[0003] A kind of floating plant such as water hyacinth (Eichhornia crassipes), commonly known as water hyacinth, water lotus, false narcissus, etc., mainly reproduces asexually and can absorb eutrophication components in water bodies. People used to cultivate them in eutrophic water bodies in the early days. Its growth absorbs nutrients; however, it is found that it grows extremely fast in eutrophic water bodies, usually from 10 to 600,000 within 8 months, and is recognized as one of the fastest growing plants If it is not salvaged in time, it will cover the water surface, block the river course, affect shipping, hinder drainage and irrigation, hinder water flow during the flood season, eventually rot and smell, pollute water quality, and reduce the penetration ability of light to the water body, affecting the growth of underwater organisms, and Increasing the concentration of carbon dioxide in water and reducing the output of aquatic products is regarded as a harmful organism that pollutes the environment, which plagues most of the southern cities in our country. People are struggling with how to eliminate its harm

Water hyacinth is usually salvaged regularly or introduced natural enemies, but the salvage work is cumbersome and the cost is too high, and the method of natural enemies is not mature