Primary treatment device for sewage treatment

Abstract

The invention provides a primary treatment device for sewage treatment. The primary treatment device for sewage treatment comprises a primary sewage treatment pool, wherein the primary sewage treatment pool comprises a primary treatment cavity, a secondary treatment cavity, a tertiary treatment cavity and a water storage cavity; the primary treatment cavity is positioned at the upper layer; the secondary treatment cavity and the tertiary treatment cavity are simultaneously positioned in the middle layer; the water storage cavity is positioned in the lower layer; the bottom of the primary treatment cavity communicates with the top of the secondary treatment cavity; the bottom of the primary treatment cavity is provided with a first filter layer; one side of the secondary treatment cavity communicates with the tertiary treatment cavity; a second filter layer is arranged between the secondary treatment cavity and the tertiary treatment cavity; the bottom of the tertiary treatment cavity communicates with the water storage cavity; the bottom of the tertiary treatment cavity is provided with a third filtering layer; a stirring shaft is arranged in the tertiary treatment cavity; a purification agent adding opening and a motor for driving a stirring shaft to rotate are arranged on the top of the tertiary treatment cavity; the upper part of the primary treatment cavity is connected with a water inlet pipe; the upper part of the water storage cavity is connected with a water outlet pipe. The primary treatment device has the advantages that the three-stage filtering is performed; the effect of a purification agent is combined so that the solid impurities in the sewage are effectively removed; the treatment effect of the primary sewage treatment pool is improved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a primary treatment device for sewage treatment. Background technique [0002] Sewage treatment refers to the process of purifying sewage to meet the water quality requirements for drainage or reuse. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields. Sewage treatment can be divided into primary treatment, secondary treatment and tertiary treatment according to the degree of treatment. [0003] The primary treatment is mainly to remove the suspended solid matter in the sewage. The wastewater after the primary treatment is still not suitable for discharge and must be treated in the secondary treatment. The main task of the secondary treatment is to substantially remove colloidal and dissolved organic matter in the sewage. ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a primary treatment device for sewage treatment in view of the problem that the above-mentioned existing primary sewage treatment device has a poor treatment effect.

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