A kind of cyanobacteria rapid preconcentration device and method for water body application

Abstract

The invention discloses a cyanobacteria rapid pre-concentration device and method for water bodies, and relates to the technical field of ecological water quality purification. A threaded parallel pipe, a microporous concentration column is installed on the outer surface of the first threaded parallel pipe, and the end of the microporous concentration column is connected with a second threaded parallel pipe, and one end of the second threaded parallel pipe is connected with a concentrated liquid outlet pipe through, In addition, a pressure gauge is installed above the outer surface of the concentrate outlet pipe, and a backwash water inlet pipe is installed at the lower end of one side of the outer box, and one end of the backwash water inlet pipe is connected with a parallel pipe, and the outer upper end of the parallel pipe is installed symmetrically There is a backwash high-pressure spray pipe, and a plurality of jet spray heads are connected to one side of the outer surface of the backwash high-pressure spray pipe. The design is easy to operate, and can pre-concentrate blue-green algae in water bodies on a large scale and with high efficiency, without adding any chemical agents.

Description

technical field [0001] The invention relates to the technical field of ecological water quality purification, in particular to a cyanobacteria rapid preconcentration device and method for water bodies. Background technique [0002] With the rapid development of society and economy, the eutrophication of water bodies is becoming more and more serious, resulting in frequent outbreaks of cyanobacteria blooms in a large number of water bodies, such as Taihu Lake, Dianchi Lake, Chaohu Lake, etc., causing damage to the water ecological environment and threatening the safety of drinking water for the general public The fundamental measures to solve algae blooms are to control the discharge of pollution sources, build a benign water ecological environment, and realize the ecological restoration of the water body itself. However, such methods are slow and difficult to achieve overnight. However, eutrophic water Experience frequent large-scale cyanobacteria blooms, therefore, after th...

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Problems solved by technology

[0002] With the rapid development of society and economy, the eutrophication of water bodies is becoming more and more serious, resulting in frequent outbreaks of cyanobacteria blooms in a large number of water bodies, such as Taihu Lake, Dianchi Lake, Chaohu Lake, etc., causing damage to the water ecological environment and threatening the safety of drinking water for the general public The fundamental measures to solve algae blooms are to control the discharge of pollution sources, build a benign water ecological environment, and realize the ecological restoration of the water body itself. However, such methods are slow and difficult to achieve overnight. However, eutrophic water Experience frequent large-scale cyanobacteria blooms, therefore, efficient cyanobacteria emergency treatment measures are needed after cyanobacteria outbreaks to reduce or avoid serious impacts on water ecological environment and drinking safety

[0003] At present, among many emergency treatment technologies for cyanobacteria blooms, salvaging cyanobacteria from water bodies by coagulation air flotation or coagulation sedimentation is widely considered to be the most direct and effective emergency prevention and control measure for cyanobacteria; A cyanobacteria salvage method widely used in the separation station. This method can not only remove the cyanobacteria in the water body, but also take away a large amount of N, P and other nutrients and algae toxins. Therefore, in Taihu Lake, There are dozens of algae-water separation stations with coagulation air flotation / sedimentation technology around Dianchi Lake and Chaohu Lake. However, cyanobacteria cells in the water body are greatly affected by hydrodynamics, climate, nutrients, etc., and they tend to gather in the leeward bay. However, the change of wind direction has a great impact on the concentration of cyanobacteria cells accumulated on the surface of the water body, which brings great challenges to the treatment process of the algae water separation station, especially when the concentration of algae cells is low, it will not only lead to a large amount of waste of coagulation agents , increase the treatment cost, and also lead to a significant increase in the coagulation residue in the effluent, resulting in secondary pollution of water pollution

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