Rain sewage filtering and settling tank for drain outlets of rivers, rivers, lakes, reservoirs and seas

Abstract

The invention discloses a rain sewage filtering and settling tank for drain outlets of rivers, rivers, lakes, reservoirs and seas. The rain sewage filtering and settling tank comprises a tank body, wherein a settling inclined plane upwardly inclining from the right side to the left side is arranged at the bottom of the tank body; an influent water flow guiding surface is connected to the top of the settling inclined plane; the influent water flow guiding surface is connected to the left side wall of the tank body; a bottom settling surface is connected to the bottom of the settling inclined plane; the bottom settling surface is connected to the right side wall of the tank body; a water inlet and a water draining port are formed in the side wall of the tank body; the water inlet is formed right above the influent water flow guiding surface; the water draining port is formed right above the bottom settling surface and is higher than the top of the settling inclined plane. In the rain sewage filtering and settling tank, the contact area between the settling inclined plane and water is relatively large, namely the contact area between the settling inclined plane and solid garbage in the water is relatively large, so that the settling ability is relatively strong; in the rising process of the water level, the garbage in sewage is in a climbing state relative to the settling inclinedplane; through adoption of the structure, adhesion of the garbage to the settling inclined plane is facilitated, so that the settling efficiency of the settling tank is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a rainwater sewage filtration and sedimentation tank for rivers, rivers, lakes, reservoirs and sea sewage outlets. Background technique [0002] Domestic sewage and industrial wastewater in urban areas are generally collected by urban pipes and canals and treated by urban sewage treatment plants before being discharged into rivers, rivers, lakes, reservoirs, and seas. After treatment, the water quality of such sewage is good and can be discharged directly ; Urban runoff sewage is formed by rain and snow leaching urban air pollutants and washing buildings, ground, waste residue and garbage, especially for the sewage formed by rainwater scouring, this type of sewage is usually directly discharged to rivers, rivers, lakes, etc. through pipelines In reservoirs and seas, the sewage discharge process is usually mixed with a large amount of floating debris and waste...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a rainwater filtration and sedimentation tank for rivers, rivers, lakes, reservoirs, and sea sewage outlets. The sedimentation tank can ensure that solid waste and silt in rainwater are naturally precipitated and floated. Waste and other garbage are filtered and then discharged, solving the problem of water pollution caused by direct discharge of rainwater into rivers, rivers, lakes, reservoirs, and seas

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