A Municipal Drainage Classification Treatment System

Abstract

This application relates to a municipal drainage classification treatment system, which sequentially includes a sand and gravel sedimentation tank, a stirring tank, a flocculation tank, a floc sedimentation tank and a clear water tank along the sewage transportation direction, wherein a water inlet is opened on the top of the sand and gravel sedimentation tank, and There is a first filter screen at the water inlet. The sand and gravel sedimentation tank is separated by a preset partition plate with a funnel-shaped structure to form a water collection area and a sedimentation area below the water collection area. The mixing tank passes through the preset second A conduit is connected to the water collection area, and the end of the first conduit close to the water collection area is provided with a second filter screen; a flocculant adding device is provided above the stirring tank, and a stirring device is provided in the stirring tank, and the stirring tank passes through a preset The second conduit is connected to the flocculation tank, the flocculation tank is connected to the floc sedimentation tank through the preset third conduit, and the top of the floc sedimentation tank is connected to the clear water tank through the preset fourth conduit, and the clean water tank is equipped with a germicidal lamp . The application can improve the purification degree of sewage.

Description

technical field [0001] The present application relates to the technical field of sewage treatment, and in particular, to a grading treatment system for municipal drainage. Background technique [0002] Sewage usually refers to the effluent from life and production that is polluted to a certain extent. Sewage mainly includes domestic sewage, industrial wastewater and initial rainwater. The main pollutants of sewage include pathogen pollutants, oxygen-consuming pollutants, plant nutrients and toxic pollutants. Sewage treatment is the process of purifying sewage so that it can meet the water quality requirements for discharge into a water body or for reuse. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields, and is increasingly entering the daily life of ordinary people. [0003] Sewage contains floating objects with low density, suspended s...

AI Technical Summary

Problems solved by technology

[0003] Sewage contains floating solids with low density, suspended solids with high density and large pieces of dirt. Most of the existing sewage treatment methods are solid-liquid separation by standing still after adding flocculants. This setting is too simple. In the process of sewage treatment, the solid-liquid separation of sewage cannot be carried out thoroughly, which can easily lead to incomplete purification of sewage; therefore, further improvement can be made

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