Physical-biological eutrophication water bloom treatment method applicable to deepwater reservoir

A biological treatment and eutrophication technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as secondary pollution and negative effects of chemicals, and achieve restoration and improvement Water environment quality, good promotion and application prospects, and the effect of avoiding secondary pollution

Pending Publication Date: 2020-03-31
PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
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Problems solved by technology

This method is the simplest and the temporary effect is the most obvious, but it is very easy to produce secondary pollution and the bioaccumulation and biomagnification effects of chemicals will have a great negative impact on the entire ecosystem.

Method used

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  • Physical-biological eutrophication water bloom treatment method applicable to deepwater reservoir

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 1 The deep water area is divided into three areas, 1 ecological floating island area, 2 solar water circulation area, and 3 shading algae control area. According to the water depth, water area and hydraulic retention time, the ecological floating island area and the solar water circulation area are determined respectively. area, the area of ​​shading and algae control area.

[0028] The ecological floating island area 1 consists of the combined ecological floating islands 4 connected end to end. The artificial medium is selected as a combination of fillers. The floating bed is made of environmentally friendly polymer platter type floating bed (PP material), and the floating bed is fixed by anchoring. One end of the ecological floating island is fixed on the shore, and the other end is fixed on the solar water layer mixer. The shape of the floating bed is selected as a single quadrilateral, which is spliced ​​into different shapes, and the size of the floatin...

Embodiment 2

[0031] Example 2 Simulation of Reservoir Treatment Example

[0032] In the artificial lake Longhu experiment in the School of Chinese Language and Culture, Jinan University, Guangzhou City, Guangdong Province, the blooms were mainly Microcystis aeruginosa, and the floating island plants were ecological floating island plants such as calamus, canna, cattail, and iris, elegans and iris. Submerged plants.

[0033] At the beginning, the water quality was inferior to Class V, and the water body was seriously eutrophic. The initial chlorophyll a concentration was 0.138 mg / L, and the algae density was 3.67×10 8 cells / L, transparency 0.4m, COD 23mg / L, total nitrogen 2.356mg / L, and total phosphorus 0.424mg / L.

[0034] In the lake according to Example 1, the ecological floating island occupies 1 / 3 of the lake area, and the shading net occupies 1 / 3 of the lake area. Due to the small lake area, one solar water layer mixer is required.

[0035] After the installation of ecological floati...

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Abstract

The invention relates to a physical-biological eutrophication water bloom treatment method applicable to a deepwater reservoir. According to the invention, a water area is divided into three parts according to the characteristics of the water area. An ecological floating island area is composed of end-to-end-connected combined ecological floating islands; nutrient salts like nitrogen and phosphorus are absorbed through aquatic plants; microbial communities of plant root systems degrade organic matters and have an algal allelochemical effect to remove a majority of nitrogen and phosphorus in awater body; meanwhile, the effect of plant shading is achieved. A solar water body circulation area utilizes solar water layer mixers to realize circulation of the water body, so dissolved oxygen of the bottom of the water body is improved, and release of nutrient salts like nitrogen and phosphorus in sediments is reduced. A shading algae control area is composed of shading nets; and through shading, reduction of illumination intensity, inhibition of photosynthesis and reduction of algae density are realized. The physical-biological eutrophication water bloom treatment method provided by the invention can effectively control occurrence of eutrophication water blooms of the deepwater reservoir and effectively improves the quality of a water environment.

Description

technical field [0001] The invention belongs to the field of water environmental protection and treatment, relates to eutrophication algal bloom treatment, and in particular relates to a plant algae suppression technology, a low-temperature water utilization technology based on solar water circulation, and a shading algae control technology, a physical-biological integrated ecology suitable for deep water reservoirs governance methods. Background technique [0002] At present, my country's algal bloom control technology has achieved preliminary results. The commonly used algal bloom control measures mainly include: (1) Physical methods mainly include interception, dredging, diversion and flushing, and aeration technology. It is difficult to effectively control algal blooms in eutrophic water bodies by simply relying on sewage interception in severely nutrient-rich lakes. Covering the silt at the bottom of lakes with plastic films or granular materials such as fly ash prevent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F3/28
CPCC02F3/28C02F3/32C02F3/325C02F3/34
Inventor 罗欢吴琼杨芳陈华香李胜华李木桂曾志鹏陈秀洪韩春阳黄煌
Owner PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
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