Method of utilizing filter-feeding organisms to remove algae

Abstract

The invention discloses a method of utilizing filter-feeding organisms to remove algae. The method includes: allowing algae-containing water to sequentially flow through water storage facilities in serial connection, sequentially putting copepods, filter-feeding shell-filter-feeding fishes, copepods and filter-feeding shell-filter-feeding fishes into the water storage facilities, and adding a microbial restoration agent into the water storage facilities when a lot of algae appears, wherein the microbial restoration agent comprises nitromonas, nitrosomas, bacillus subtilis, poly-phosphorus microorganism and photosynthetic bacteria. Meshes of a net for each water storage facility in which the copepods are put in are 0.5-2mm while meshes of a net for each water storage facility in which the filter-feeding shell-filter-feeding fishes are put in are 15-60mm. By the method, floating algae in a water body and nitrogen-phosphorus concentration of the water body can be reduced, growth of algaeattached on a water bottom layer is promoted, serial connection of the copepods, filter-feeding shells and filter-feeding fishes and feeding habit difference are utilized to achieve the objective of algae removal, the algae can be eliminated to greatest extent, and algae digestion capacity is improved.

Description

technical field [0001] The invention relates to the technical field of environmental ecology, in particular to a method for removing algae by using filter-feeding organisms. technical background [0002] Eutrophication of water body means that a large amount of plant growth elements such as nitrogen and phosphorus are discharged into the water body, causing the growth and reproduction of algae and other aquatic organisms in large quantities. At the same time, the rate of organic matter production far exceeds the rate of consumption. balancing process. The eutrophication of water body is a very complex and cumbersome process, and there are many influencing factors in this process. According to the nature of the influencing factors, it can be divided into three categories: physical, chemical and biological. Among them, the evaluation indicators of physical factors include temperature, transparency, average depth, chromaticity, hydraulic residence time and eutrophication area...

AI Technical Summary

Problems solved by technology

The algae removal method of the present invention alternately stocks copepods or filter-feeding shellfish-filter-feeding fish in two adjacent water storage facilities, and integrates the mechanism that different aquatic organisms have control and removal effects on planktonic algae, and utilizes copepods The connection of filter-feeding shellfish and filter-feeding fish and the difference in feeding habits achieve the purpose of algae removal, thereby overcoming the singleness of biological methods, and can remove algae in eutrophic water as a whole; in addition, the filter used in this algae removal method Food-eating organisms can filter suspended particles such as phytoplankton and organic debris, reduce phytoplankton algae in the water body, and at the same time reduce the release of nutrient salts in sediments, thereby reducing the level of nutrient salts in the water layer, thereby inhibiting the growth of phytoplankton algae and reducing planktonic algae. The algae biomass and the concentration of nitrogen and phosphorus in the water body reduce the turbidity of the water body, increase the light reaching the bottom of the water body, and promote the growth of attached algae at the bottom of the water, and their massive growth is conducive to breaking the original competition balance and the recovery of submerged plants. And transform it into a clear water ecosystem, which is of great significance to the ecosystem restoration of eutrophic water bodies, and can effectively solve the problem of using aquatic organisms to remove algae, but cannot completely remove algae in natural water bodies

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