River course black foul water biological purification treatment device

Abstract

The invention discloses a river course black foul water biological purification treatment device which comprises a river course and river embankments, wherein the river course between the river embankments is provided with a cut-off dam; the outer side of the river embankment corresponding to the cut-off dam is provided with a biological tank; the biological tank comprises a water inlet gate, a water outlet gate and a tank body; the water inlet gate is communicated with the upper course of the cut-off dam; the water outlet gate is communicated with the lower course of the cut-off dam; the back of the water inlet gate is provided with a guide plate; the tank body and the river embankments form a closed space; longitudinal isolation walls and transverse isolation walls are arranged in the tank body and divide the tank body into a multistage purification tank; a biological island is arranged in the purification tank; the bottom of the purification tank is provided with a low-speed submersible water impeller; an inclined tube sedimentation tank is arranged in the last purification tank stage; the bottom of the inclined tube sedimentation tank is provided with a sludge discharge pipe; and the sludge discharge pipe is communicated with the outside of the biological tank. The device implements unpowered oxygenation by enabling river course black foul water to flow into the biological tank in a water fall mode; and the fixed biological island arranged in the biological tank purifies the river course black foul water.

Description

technical field [0001] The invention relates to a sewage purification device, in particular to a biological purification treatment device for black and odorous water in a river course. Background technique [0002] In recent decades, the scope and degree of black and odorous water bodies have been increasing. In most urban river sections across the country, most of the water bodies flowing through prosperous areas are polluted to varying degrees. Once the river water body absorbs organic matter and humus of some animals and plants in excess, the dissolved oxygen in the water will be consumed rapidly. When the dissolved oxygen drops to an excessively low level, a large amount of organic matter will be further decomposed under the action of anaerobic bacteria, producing hydrogen sulfide, amine, ammonia and other odorous and volatile small molecular compounds, thus emitting an odor. At the same time, under anaerobic conditions, insoluble gases such as methane, nitrogen, and hy...

AI Technical Summary

Problems solved by technology

If this kind of black and smelly river water cannot be purified in time, it will not only cause people to feel uncomfortable or even disgusted, but also cause damage to the ecological environment.

Through the search, there is no literature report on the biological purification treatment device for black and odorous water in the river course

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