Sewage processing process using microbial carrier

Abstract

The present invention relates to a sewage processing process using a microbial carrier, and belongs to the technical field of sewage processing, and the sewage processing process comprises the following process steps: S1: sewage flows into a primary sedimentation tank for primary sedimentation to obtain primarily precipitated sewage; S2, the primarily precipitated sewage in the step S1 is filteredthrough a grid and then flows into a granulation sludge tank to be treated; S3, the sludge treated by the granulated sludge tank in the step S2 is discharged into a secondary sedimentation tank for secondary sedimentation; and S4, the sewage with qualified water quality indexes after sedimentation processing in the secondary sedimentation tank in the step S3 is discharged. The sewage processing process has higher incoming water high-low impact resistance and is not prone to sludge bulking.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment process using microbial carriers. Background technique [0002] Water pollution is one of the serious environmental problems that our country is currently facing. Since 1985, my country's annual wastewater discharge has been maintained at around 35 billion to 40 billion cubic meters. Among the wastewater discharged, only 10% of the domestic wastewater and 70% of the industrial wastewater are treated, and about half of the industrial wastewater treatment facilities fail to meet the national discharge standards, and the rest of the untreated wastewater is directly discharged into rivers In the lakes, the water environment in our country has been seriously polluted and destroyed; the discharge of urban domestic wastewater is also increasing with the urban construction and development. Although a large number of control measures have been taken in recent ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned prior art scheme has the following defects: because it uses ordinary activated sludge, and ordinary activated sludge generally uses filamentous bacteria as the skeleton, and the bacterial micelles are composed of other functional bacteria.

However, in the process of actual use, this kind of activated sludge has weak ability to withstand high and low impact of incoming water, and once the filamentous bacteria multiply excessively, the number of filamentous bacteria may exceed the bacterial micelles, so that the sludge structure is loose and the quality becomes lighter. , the settling property decreases, which leads to the expansion of the sludge, resulting in a decrease in the quality of the sludge effluent

Images