Full-automatic two-stage backwashing sewage filtering system

Abstract

The invention relates to the field of sewage filtering equipment, and in particular, relates to a full-automatic two-stage backwashing sewage filtering system which comprises an equipment shell, a water inlet pipe, a clear water chamber, a filtering chamber, a sewage discharging cylinder and an air supply assembly. The clear water chamber is positioned at the upper part of the equipment, the filter chamber is positioned at the lower part of the clear water chamber, the clear water chamber and the filter chamber are separated by a strictly sealed trapezoidal filter chamber top, the water inletpipe vertically extends into the filter chamber from the upper part of the clear water chamber, and a lower opening is connected with the filter chamber top; the bottom of the sewage discharging cylinder extends into the filter chamber, and the sewage discharging cylinder comprises a backwashing pump; according to the invention, the advanced treatment of the sewage system and the enhancement of effluent quality are realized through the water inlet pipe, the clear water chamber, the filter chamber, the sewage discharge cylinder and the air supply assembly, and the problems of substandard effluent SS, complex filter system, water consumption and energy consumption are solved. The system is universally suitable for tail end strengthening treatment of municipal domestic sewage, rural domesticsewage, decentralized pollution source sewage and the like.

Description

technical field [0001] The invention relates to the field of sewage filtering equipment, in particular to a fully automatic two-stage backwashing sewage filtering system. Background technique [0002] The secondary process wastewater treatment system based on the biological process in the market, due to defects such as poor influent water quality, lack of tertiary treatment, insufficient residence time or excessive load due to the total volume of the integrated equipment, can easily lead to SS and other indicators in the effluent water. Exceeding the standard, filtration is a conventional treatment process for water treatment, and about 10%-20% of suspended impurities among insoluble impurities need to be removed by filtration. [0003] For sewage with a low concentration of organic matter in the influent water, poor flocculation of activated sludge is likely to occur in its treatment system, mud running occurs in the secondary settling tank, the front-end process load is to...

AI Technical Summary

Problems solved by technology

[0002] The secondary process wastewater treatment system based on the biological process in the market, due to defects such as poor influent water quality, lack of tertiary treatment, insufficient residence time or excessive load due to the total volume of the integrated equipment, can easily lead to SS and other indicators in the effluent water. Exceeding the standard, filtration is a conventional treatment process for water treatment, and about 10%-20% of suspended impurities in undissolved impurities need to be removed by filtration

[0003] For sewage with a low concentration of organic matter in the influent water, poor flocculation of activated sludge is likely to occur in its treatment system, mud run-off occurs in the secondary settling tank, the front-end process load is too low, and SS is prone to exceed the standard in the effluent

The filtration systems on the market have complex structures, high energy consumption for high-pressure backwashing, and high water consumption for full washing; due to structural characteristics and particle size selection of filter materials in some filtration systems, the fine filter materials will be mixed with the filter material during backwashing. The water is discharged together, and the running material causes the filtration accuracy to decrease, reducing the service life of the system

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