Drinking water source pollution flow mud sedimentation promoting method

Abstract

The invention relates to a drinking water source pollution flow mud sedimentation promoting method which comprises the steps: measuring a wind speed and a wind direction of the water surface of a drinking water source and a bottom layer water flow direction, determining a flow field under the primary wind field action and distributing an underwater submerged dike in the perpendicular direction ofthe flow field, wherein the underwater submerged dike is formed by a first ecological submerged disk and a second ecological submerged dike, the first ecological submerged dike is piled by geotechnical cloth bags which are closest to the water's edge and filled with a first filler, the second ecological submerged dike is piled by geotechnical cloth bags which are farthest from the water's edge andfilled with a second filler, and the distance of the first ecological submerged dike to the water bottom is smaller than that of the second ecological submerged dike to the water bottom. The drinkingwater source pollution flow mud sedimentation promoting method disclosed by the invention has the beneficial effect that by means of selecting an arrangement mode, filler types and filler sizes of the underwater submerged dikes, pollution flow mud sedimentation is effectively promoted, and a suspended matter concentration of the shoreward sides of the underwater submerged dikes is obviously reduced.

Description

technical field [0001] The present application relates to the field of protection of aquatic ecosystems, in particular, to a method for promoting sedimentation of drinking water source polluted mud flow. Background technique [0002] Sediment is an important part of aquatic ecosystems and plays an important role in regulating material and energy balance. Flow mud is located between the hard bottom mud and the overlying water, and it is easy to move with the water flow. It is the most active component in the sediment and accumulates various pollutants. Under environmental conditions such as wind speed, wave action, sailing, and bioturbation, the mud flow will resuspend into the water body, which reduces the transparency of the water body and limits the photosynthesis of aquatic organisms, especially submerged plants. Pollutants are desorbed and released, causing secondary pollution of water bodies. [0003] Drinking water sources are responsible for providing source water f...

AI Technical Summary

Problems solved by technology

For most shallow lake-type water sources, due to the shearing effect of wind and waves on the lake bottom sediments, the polluted mud will be resuspended, affecting the water quality and water supply security of the water source.

Usually, the direction of flow mud movement is affected by the flow direction of the lake. The water intake at the water source makes the flow mud migrate towards the water intake and enter the water pipeline, which increases the cost of drinking water source water treatment and affects the quality of water supply.

However, the movement of pollution mud is disordered, resulting in the lack of effective interception measures

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