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Water body stabilization control method after lake dredging

A control method and lake technology, which are applied in the field of polluted lakes and river restoration, and ecological environment science and technology, to achieve the effect of reducing the risk of eutrophication, wide application range and low cost

Active Publication Date: 2015-11-04
HUBEI PROVINCIAL WATER RESOURCES & HYDROPOWER PLANNING SURVEY & DESIGN INST
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Problems solved by technology

[0004] The object of the present invention is to provide a water stabilization control method after lake dredging, which is easy to implement and easy to operate, effectively solves various environmental problems caused by sediment dredging, and quickly degrades The released nutrients restore the damaged sediment ecosystem, improve the self-purification ability of the lake, and ensure the stability of the water body after dredging

Method used

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  • Water body stabilization control method after lake dredging

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Embodiment 1

[0025] A water stabilization control method after lake dredging, the steps are:

[0026] (1) Detect the change of lake water quality and lake hydrological conditions before and during dredging, and determine the type and amount of bacteria to be injected. The water surface of the lake is about 53,000 m 2 , before and during dredging are in a state of eutrophication, which exceeds the standard of surface water inferior to Class V. During dredging, the water quality deteriorates significantly and there is a risk of cyanobacteria blooms. The specific water quality indicators are shown in Table 2.

[0027] (2) According to the measurement results in step (1), formulate the types of microorganisms and the amount of bacteria to be added, see Table 1 for details.

[0028] Table 1 Types and total amount of microbial agents

[0029]

[0030] The organic mineralization category includes organic mineralization bacillus and low-temperature organic mineralization bacteria;

[0031] ...

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Abstract

The invention discloses a water body stabilization control method after lake dredging. The water body stabilization control method comprises following steps: (1) water quality monitoring of lakes to be dredged is carried out before dredging and in dredging, lake water quality changing in dredging is monitored, and microorganism adding amount is calculated; (2) after dredging, stabilization control operation is carried out, activated composite water purifying microorganism bacterium agents are added into water bodies at a certain amount, water quality changing is monitored, microorganism bacterium agent adding schemes are adjusted, wherein the microorganism bacterium agents are obtained via selection, are capable of inhibiting growth of pathogenic bacteria, and promoting restoration of bottom mud microecosystems; (3) auxiliary restoration is selected based on water quality conditions, and aeration equipment and microbial flocculants are adopted; and (4) after construction, water quality is monitored continuously, and later water quality maintenance is carried out. The water body stabilization control method is capable of solving a plurality of environmental problems caused by bottom mud dredging, realizing rapid degradation of nutritive salts released after dredging, and ensuring water body stability after dredging.

Description

technical field [0001] The technology belongs to the fields of eco-environmental science and technology and restoration technology of polluted lakes and rivers, and more specifically relates to a water stabilization control method after lake dredging. technical background [0002] In recent decades, with the development of industry and agriculture and the irrational use of water resources, most of my country's shallow lakes and rivers have become eutrophic or are in the process of eutrophication. Eutrophic lakes have poor water quality, low transparency, and frequent occurrence of blue-green algae, which seriously affect people's life and production. The management of eutrophic lakes is a major issue facing society today. [0003] Sediment dredging technology is currently one of the most widely used technologies for eutrophic lake treatment. It can directly and quickly remove polluted sediment from lakes, quickly improve water quality, and increase lake reservoir volume. H...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/02
CPCY02W10/10
Inventor 陈正军雷静冯国栋柯雪佳年夫喜
Owner HUBEI PROVINCIAL WATER RESOURCES & HYDROPOWER PLANNING SURVEY & DESIGN INST
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