A deep purification pond chain treatment process for dredged tail water

Abstract

The invention belongs to the technical field of water treatment, and in particular relates to a deep purification pond chain treatment process for dredged tail water. The deep purification pond chain treatment process for dredged tail water includes a first-level sedimentation pond, a second-level sedimentation pond, a muddy water pond, and a clear water pond With the ecological landscape pond, the deep purification pond chain treatment process of the dredged tail water is connected by an overflow weir. When the distance between the ponds is relatively long, the pipe connection is used, and the anti-pipeline sedimentation measures are taken. When the concentration of suspended particles in the tail water is ≤200mg / When L, there is no secondary sedimentation pond, and the effluent of the primary sedimentation pond directly enters the muddy water pond, and aquatic plants are planted in the ecological landscape pond. The invention provides an energy-saving and environment-friendly method that does not need to add power facilities. Through the joint action of substrates, plants and microorganisms in multi-stage ponds, organic matter, N, P and other pollutants in the water are gradually adsorbed and degraded, and the tail water is purified. The deep purification pond chain treatment process of dredging tail water to construct the ecological pond landscape effect.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a deep purification pond chain treatment process for dredged tail water. Background technique [0002] Dredging and dredging is an important means for environmental protection projects to control the endogenous pollution of river, lake and reservoir bottom sediment, and it is also the main measure for developing and maintaining waterways. However, dredging and dredging, especially the wet dredging method, will generate a large amount of dredging tail water, and the pollutants in the sediment will diffuse into the water body after stirring, so the tail water must be treated before it can be discharged. Dredged tail water has the characteristics of large water volume and unstable water quality. Compared with surface water, dredged tail water generally has a higher concentration of suspended particulate matter, while other water quality indicators vary with the degree of sed...

AI Technical Summary

Problems solved by technology

At present, the tail water treatment of dredging projects mainly adopts the process of dosing coagulation sedimentation and porous material adsorption for treatment, but the subsequent use of tail water effluent is limited due to dosing coagulation sedimentation; porous material adsorption method consumes a lot of adsorption materials and costs Therefore, the environmental protection treatment of dredging and dredging tail water is an important research direction for dredging and dredging projects and the control of internal source pollution of rivers, lakes and reservoirs

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