Water quality purification system and method for urban river

Abstract

The invention discloses a water quality purification system for an urban river. The river is divided into three treatment areas according to the water quality condition of the urban river, namely an agricultural farming waste water treatment area, a treatment area of branch rivers polluted by waste water from the chemical industry and a domestic waste water treatment area, the water quality purification system for the urban river comprises a sludge cleaning device, biological earthworms, a first biological dam, a second biological dam, a third biological dam and an ecological floating island. According to the water quality purification system and process for the urban river, an integral treatment scheme and a segmented treatment principle are adopted, the river is divided into three segments for segmented treatment, all treatment units are matched reasonably, conditions are created actively for gradually lowering pollution of the river, the ecological system is established artificially, the self-cleaning capacity of the river is gradually restored, all the areas are subjected to targeted treatment according to actual conditions, investment and operating cost are low, and the purifying effect is good. The invention further discloses a water quality purification method for the urban river.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an urban river water purification system and purification method. Background technique [0002] With the advancement of urbanization, the discharge of industrial sewage and domestic sewage is also increasing year by year. Generally, there are many enterprises around rivers in cities, and the pollution of high COD, ammonia nitrogen, sulfide, heavy metals, etc. will not only directly pollute the water body, but also cause Many of these pollutants are biologically toxic and fundamentally destroy the ecological balance of water bodies. Moreover, the domestic sewage of nearby residents is not in place due to the lack of comprehensive domestic sewage pipe network, and domestic pollution will also be discharged into the river, which also seriously affects the self-purification ability of the water body. [0003] Urban rivers are the carrier of urban prosperity and civilized de...

AI Technical Summary

Problems solved by technology

However, the existing urban river sewage treatment has problems such as long process flow, unreasonable unit collocation, high investment and operation costs, etc.

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