Water quality improving method by algae control of compound ecological environment-protection algae control agent

An environmentally friendly and ecological technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, oxidized water/sewage treatment, etc., can solve the problems of limited improvement, large dosage of chemicals, large energy consumption, etc., and achieve improved redox state , prevent continuous release, and accelerate the effect of sinking speed

Inactive Publication Date: 2010-11-10
INST OF AQUATIC LIFE ACAD SINICA
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AI Technical Summary

Problems solved by technology

[0002] Removing algae and controlling its growth is a difficult problem in the restoration and protection of lakes and reservoirs. At present, there are three main types of technologies adopted internationally: ①Engineering methods: dredging sediment, mechanical algae removal, water diversion and silting, etc., but the symptoms are not cured;② Physical method: Ultrasonic algae removal, but it consumes a lot of energy and does not fundamentally inhibit the activity of algae, and the flocculation effect of fragmented groups and single cells is worse, and the proliferation ability after resuspension under wind and waves is stronger; ③Biological methods: such a

Method used

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Embodiment 1

[0025] This method of controlling algae flocculation to improve water quality is as follows:

[0026] A method for improving water quality by controlling algae with a compound ecological and environmental protection algae control agent, the steps are:

[0027] A. Area selection: In lakes and bays seriously polluted by algae blooms, select the windward shore area, first use soft enclosures (solid float type rubber oil booms, available in the market) to enclose an area of ​​about 200 mu or directly Implement algae control in small water bodies. The function of the enclosure is to build a water quality improvement area in a part of a large lake, so as to gradually realize the transition of the ecosystem from a turbid water state to a clear water state;

[0028] B. Algicide preparation: hydrogen peroxide (configured at 0.2L per cubic meter of lake water) (H 2 o 2 , mass fraction 30%, industrial grade, all available in various local markets) dilute 10 times with tap water or cle...

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Abstract

The invention discloses a water quality improving method by algae control of a compound ecological environment-protection algae control agent, which comprises the following steps: A. area selection: girding an experimental zone; B. algicide preparation: diluting hydrogen peroxide with tap water and arranging the hydrogen peroxide in the shade; C. flocculant preparation: preparing industrial-grade polyferric sulfate into a solution and diluting with water; D. lake sediment preparation: taking pythmic sediments, drying and crushing the sediments, preparing a turbid liquid, and stirring silt sunk into the bottom to the upper layer; E, the dosage and spraying condition of the algicide: uniformly spraying the diluted H2O2 in proportion in an enclosure with surface water bloom and spraying; F. sediment turbid liquid spraying: spraying the turbid liquid in proportion on the water surface in an atomization mode; and G. flocculation sedimentation implementation: sprinkling the polyferric sulfate solution into the water, stirring, standing still and settling. The method is simple and convenient to operate, has low cost, increases transparency, has obvious substrate improvement effect, has zero pollution on the water remediation, and has high environmental, social and economic benefits.

Description

technical field [0001] The present invention relates to the technical field of the removal of cyanobacteria blooms in eutrophic lakes and the improvement of water quality, and more specifically relates to a method for improving water quality and bottom quality by controlling algae with a compound ecological and environmental protection algae control agent, which is suitable for the accumulation of cyanobacteria blooms in eutrophic lakes Significant water quality improvement on the windward shore or bay. Background technique [0002] Removing algae and controlling its growth is a difficult problem in the restoration and protection of lakes and reservoirs. At present, there are three main types of technologies adopted internationally: ①Engineering methods: dredging sediment, mechanical algae removal, water diversion and silting, etc., but the symptoms are not cured;② Physical method: Ultrasonic algae removal, but it consumes a lot of energy and does not fundamentally inhibit t...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/72C02F1/52
Inventor 李敦海汪志聪秦红杰李印霞沈银武李根保
Owner INST OF AQUATIC LIFE ACAD SINICA
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