Micro-polluted water body treatment system

Abstract

The invention provides a micro-polluted water body treatment system which comprises a pretreatment tank, a first-stage precision filter tank, a second-stage biological aerated filter tank and a third-stage precision filter tank; the micro-polluted water body treatment system comprises a lifting mode and an emergency mode, and the micro-polluted water body treatment system is switched between the lifting mode and the emergency mode according to the water quality condition of a to-be-treated water body. In the lifting mode, water flow sequentially passes through the pretreatment pool, the first-stage precision filter pool, the second-stage biological aerated filter pool and the third-stage precision filter pool, and a part of water, flowing out of the second-stage biological aerated filter pool, flows back to one or both of the water inlet end of the pretreatment pool and the water inlet end of the second-stage biological aerated filter pool. Under the emergency mode, the water flows outof the pretreatment tank and enters the first-stage precision filter tank and the third-stage precision filter tank respectively. The system can quickly improve the transparency of a water body whenthe water quantity is large, can efficiently remove various pollutants under the condition of poor water quality, and meanwhile, improves the ammonia nitrogen and organic matter treatment capacity ofthe whole system.

Description

technical field [0001] The present disclosure relates to water treatment technology, in particular to a slightly polluted water body treatment system. Background technique [0002] Slightly polluted water bodies mainly have the characteristics of low pollutant concentration, diverse types of pollution sources, large water volume, and turbid water bodies when it rains. Slightly polluted water bodies include natural water bodies and artificial water bodies, such as river and lake water bodies, landscape water bodies, aquaculture water bodies, fountains, swimming pools, water parks, etc. With the development of urbanization, the continuous generation of man-made or non-man-made pollution in the process of urban operation is one of the problems to be solved urgently. Moreover, the current state and residents have higher requirements for water quality and sanitation in urban built-up areas, so it is necessary to seek solutions Safe, efficient and economical treatment technology ...

AI Technical Summary

Problems solved by technology

[0003] The traditional biofilter is to directly input the microorganisms attached to the carrier, so that the contact between the microorganisms and the sewage is not sufficient and uniform, and the treatment effect and the utilization rate of the microorganisms are low.

The traditional water treatment process system has clear restrictions on the influent water volume and various pollution indicators of the influent water

When the amount of polluted water or influent water quality fluctuates significantly, the treatment device cannot be adjusted at any time. When the water amount is small or the water quality is good, the utilization rate of the device is low, resulting in waste of resources; when the water amount is large or the water quality is poor When the device cannot achieve rapid treatment, it may cause further deterioration of water quality

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