Riverbank-type tail water treatment system

Abstract

The invention relates to a riverbank-type tail water treatment system, which is located at riverbank of the tail water discharge port of an urban sewage treatment plant and comprises a treatment pond, wherein the surface facing to water, of the treatment pond is a water-permeable outer wall; a partition is arranged in the treatment pond; the partition divides the treatment pond into an A-level ecological treatment region and a B-level ecological treatment region; water passing holes are formed on the partition and at the bottom of the treatment pond; a water-permeable supporting clapboard is arranged on the horizontal surfaces of the water passing holes inside the treatment pond; a water passing channel is formed in the space between the supporting clapboard and the base of the treatment pond; and a sewage inflow pipe and a sewage distribution device are arranged in the A-level ecological treatment region. The tail water treatment system has the advantages of simple structure, long service life, low maintenance cost and no occupied factory area; in the tail water treatment system, a large-resistance water distribution system is applied in the deep purification of the tail water soas to realize uniform water distribution, the tail water is further intercepted and purified before entering the river, the emission mode of the tail water is changed, the ecological influence on a river channel caused by concentrated tail water discharge is reduced; and the tail water treatment system can be combined with river regulation engineering to be used as the bank hydrophilic corridor and landscape.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a river bank tail water treatment system device. Background technique [0002] With the continuous improvement of urban water pollution control level and water environment protection requirements, the water treatment rate and discharge requirements of urban sewage treatment plants will also continue to increase. The tail water of urban sewage treatment plants will be an important source of water environment pollution in the future. Regardless of whether the sewage discharge standard of urban sewage plants adopts the first-class A standard or meets the requirements for landscape water use, there is still a big gap between the water quality of the urban sewage plant and the water quality requirements of Class IV of the surface water environment quality. At the same time, due to the insufficient surface water runoff and the decline in self-purification capacity of urban la...

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Problems solved by technology

[0003] At present, there is insufficient research on the impact of the tail water discharged from the sewage plant on the ecological environment of the landscape river and how to further intercept and reduce the discharge of pollutants before the tail water of the sewage plant completely enters the urban landscape river.

Most tail water advanced purification processes need to be installed in sewage treatment plants, but it is difficult to implement for urban sewage treatment plants that have been in operation for a long time and have no vacant land, and cannot solve a series of problems caused by long-term concentrated discharge of tail water discharge outlets. pollution problem

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