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Method for controlling water bloom of branch of river-type reservoir based on water level regulation

A water level adjustment and tributary technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems that water blooms cannot be effectively controlled and the effect is not obvious, and achieve strong Operability and practicability, simple implementation, fast monitoring and evaluation of the effect

Inactive Publication Date: 2011-10-19
CHINA THREE GORGES UNIV
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AI Technical Summary

Problems solved by technology

Pollution control is a long-term project, and the effect is not obvious in a short period of time; the current reservoir scheduling method can only guarantee traditional benefits such as flood control, power generation, navigation, and water replenishment, and cannot effectively control algal blooms in some water bodies

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  • Method for controlling water bloom of branch of river-type reservoir based on water level regulation
  • Method for controlling water bloom of branch of river-type reservoir based on water level regulation
  • Method for controlling water bloom of branch of river-type reservoir based on water level regulation

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Embodiment Construction

[0016] Taking the Three Gorges Reservoir as an example to illustrate the steps to control the occurrence of algal blooms in the tributaries of river-type reservoirs through water level regulation:

[0017] figure 1 It is a routine control scheme for the water level of the Three Gorges Reservoir. During the normal operation period of the Three Gorges Reservoir, starting from January 1, the Three Gorges Reservoir will start to discharge water from the normal storage level of 1, which is 175 meters, according to the actual situation. While considering power generation, the following are mainly used Swimming for ecological replenishment. By the end of March, the water level of the reservoir has dropped to the lowest water level of 2 in the dry season, which is 155 meters. The water will be released before the flood in early May, and it will drop to the flood control limit water level of 3, which is 145 meters, in mid-September. Water storage began in the second half of the year af...

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Abstract

The invention relates to a method for controlling the water bloom of a branch of a river-type reservoir based on water level regulation. Based on the conventional water level scheduling scheme of the river-type reservoir, tide type scheduling is used in spring and summer, advancing impoundment type scheduling is used in autumn, and low-alga, uniformly blended and high-silt content water body is urged to flow into the branch from the principal river of the reservoir by increasing the strength and the range of influence of branch density current in the branch, so that the original distribution patterns of hydrodynamic force, nutritive salt and water bloom space in the branch can be broken, the vertical water body mixing degree can be increased, the thickness of the euphotic layer can be reduced, the flow rate of the branch can be quickened, and the detention time of the branch water body can be shortened, thereby achieving the purpose of controlling the outbreak of the branch water bloom or controlling the outbreak region. The invention can maintain the traditional benefits of the reservoir, such as flood control, power generation, navigation, water compensation and the like, and can achieve the ecological benefit of controlling the branch water bloom. Besides, the invention avoids the disadvantages of the traditional method for controlling the eutrophication of the water body, has the advantages of easy implementation and fast action, realizes fast monitoring and evaluation, and has high operability and applicability.

Description

technical field [0001] The invention relates to a method for controlling the occurrence of algal blooms in a water body, in particular to a method for controlling the occurrence of algal blooms in tributary streams of river-type reservoirs through water level regulation. Background technique [0002] At present, river-type reservoirs represented by the Three Gorges Reservoir have high pollution load discharges. After the reservoirs are impounded, the flow rate slows down, the water exchange capacity is weakened, and the problem of eutrophication (“bloom”) in some water bodies appears, and the safety of drinking water is affected. threaten. The eutrophication of water bodies in river-type reservoirs has attracted widespread attention at home and abroad. It is related to ensuring the health of the reservoir ecosystem, realizing the maximum value of its ecosystem services, and finally realizing the sustainable development of the ecosystem in the reservoir area. A matter of nat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00E02B3/00
CPCY02A10/11
Inventor 刘德富杨正健纪道斌黄钰铃马骏刘流孔松王从锋
Owner CHINA THREE GORGES UNIV
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