A method and device for diversion and enrichment of cyanobacteria in large water areas
A cyanobacterial and enrichment technology, which is applied in the cleaning of open water surfaces, water conservancy projects, construction, etc., can solve the problems of cyanobacteria control and efficient removal in difficult and large waters, and wide distribution of cyanobacteria, and achieves low cost, biomass reduction, and high efficiency. Absorb the effect of clearing
Active Publication Date: 2017-07-07
FUDAN UNIV
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Problems solved by technology
However, due to the large area of large waters and the large wind and waves, cyanobacteria are often distributed in a wide range, and are easy to float with the wind or mix with bottom water, so that these methods can only play a certain role whether they are used alone or comprehensively. Fundamentally respond to the needs of large water cyanobacteria control and efficient removal
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[0025] 1) Selection and location of cyanobacteria diversion enrichment area
[0026] First collect and analyze the perennial dominant wind direction of the water area, and select the downwind direction of the dominant wind as the first selection condition; then observe the actual accumulation and drift of cyanobacteria on the side of the downwind direction of the dominant wind on the spot, and take the section where cyanobacteria often gathers as an alternative Area; and finally determined according to the terrain conditions of each candidate area (including surrounding trees, windbreak forest on the leeward side is the best), whether the diversion and enrichment device is convenient to construct, and whether the operation and management are convenient. For right-angled banks (such as ︺-shaped), one or two corners should be selected as the enrichment area; for arc-shaped banks (such as ︶-shaped), it is advisable to select the section of the lowest point near the bank as the enr...
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The invention belongs to the technical field of environmental protection, in particular to a method and device for diversion and enrichment of cyanobacteria in large water areas. In the present invention, a certain area near the shore in the downwind direction of a large water area is selected as a cyanobacteria diversion and enrichment area, and a section of arched algae-retaining soft enclosure and diversion doors on both sides are used to construct a cyanobacteria diversion and enrichment device. The arched algae-retaining soft enclosure diverts the large-scale cyanobacteria from the outside to the banks on both sides, and uses the timely opening or closing of the diversion door to divert the cyanobacteria into the enrichment area or prevent the enriched cyanobacteria from blowing with the wind. Fly away. The cyanobacteria diversion enrichment device can reduce the wind and waves in the enrichment area, so that the cyanobacteria in the enrichment area can always float to the water surface, which is convenient for continuous absorption and removal. In addition, on the bottom bank side of the cyanobacteria diversion and enrichment area, the favorable terrain is used to construct the cyanobacteria diversion enrichment trap and the high-efficiency algae suction area, so that the cyanobacteria in the enrichment area can be further enriched to this area for a second time, which is more efficient. suction clear.
Description
technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method and device for diversion and enrichment of cyanobacteria in large water areas. Background technique [0002] Many large lakes in my country (such as Taihu Lake, Dianchi Lake, etc.) are facing ecological problems such as cyanobacteria blooms caused by water eutrophication. The improvement of water quality in large water areas often requires a relatively long process. How to prevent the occurrence of cyanobacteria blooms before the water quality has been fundamentally improved, and how to quickly and efficiently reduce their biomass after the occurrence, reduce the internal load of algae pollution, and create conditions for further improvement of water quality and the improvement of the lake ecosystem. common concern of the people. In order to solve this problem, people adopt more methods at present to use physical, chemical or biological met...
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IPC IPC(8): E02B15/10
Inventor 王寿兵马小雪屈云芳郑正
Owner FUDAN UNIV