De-layering-type algae bloom eliminating method

Abstract

The invention discloses a de-layering-type algae bloom eliminating method, belonging to the technical field of water treatment and comprising the following steps of: a. transferring water on a surface layer to a deep layer in the water body as well as transferring water in the deep layer to the surface layer to realize the layering elimination of the water body by adjusting and controlling the up-down circulation of the water body; b. casting fishes, shellfishes, shrimps which take algae as food; and c. planting and protecting water plants on different layer levels of the water body. In the invention, by using the characteristics that the water body is naturally layered, surface layer water with high temperature, high contents of blue-green algae, low content of soluble nutriment and high dissolved oxygen content is transferred to the deep water layer, so as to promote quick degradation of pollutants on the deep water layer, the algae in the water is filtered and eaten by the fishes and the shellfishes and nutrient salt in the water is enriched by the water plants, so that the aim of removing the pollutants is achieved. According to the de-layering-type algae bloom eliminating method, the algae bloom is controlled by using a de-layering technology; and under the condition without feeding of any chemicals, the blue algae bloom phenomenon in water areas, such as lakes, reservoirs, city river ways and the like, is avoided and various pollutants are better removed.

Description

technical field [0001] The invention relates to a method for controlling eutrophic algal blooms in water bodies, more specifically, a delamination-type algal bloom elimination technology for lakes, reservoirs, and urban river courses, and belongs to the technical field of water treatment. Background technique [0002] In recent years, with the rapid economic development, people have discharged too much nutrient salt and other pollutants into natural water bodies, causing eutrophication of water bodies and frequent outbreaks of water blooms. Most of the algae that cause water blooms are single-celled microorganisms with a short life cycle. , after a large number of growths, they die quickly, rotten and smelly, causing water quality to deteriorate, endangering the environment and water resources, and causing greater harm to the environment. The control of algae blooms, especially the blooms of freshwater lakes, reservoirs, and urban rivers Governance has long been a difficult ...

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Problems solved by technology

[0004] Existing problems in the existing technology are: (1) Fish, shellfish, and shrimps that filter algae can reduce the amount of algae in the water body, but their feces enter the water body again, and the absolute amount of degradable pollutants in the water body is low ; (2) The ecological restoration method represented by aquatic plants is greatly restricted by the revetment structure and the characteristics of the water body itself, and the change of seasons also affects the ecological management effect; (3) The mechanical aeration cycle is affected by factors such as high energy consumption and inconvenient power supply (4) Artificial salvage of algae is a passive treatment method, and improper disposal of salvaged algae will cause secondary pollution

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