Domestic sewage treatment process

Abstract

The invention discloses a domestic sewage treatment process which saves water, is good in treatment effect and meets the discharge standard. The treatment process includes the following steps that 1,pretreatment is conducted, wherein domestic sewage is intercepted by a structure with grids and automatically flows into an adjustment pool; 2, biochemical treatment is conducted, wherein sewage adjusted by the adjustment pool is sequentially sent to an anaerobic pool and an aerobic pool through a lift pump for biochemical treatment; 3, precipitation treatment is conducted, wherein sewage treatedby the aerobic pool enters a secondary sedimentation pool for precipitation treatment; 4, disinfection treatment, wherein the sedimentation pool discharge water to a disinfection pool for disinfection, and various indexes of sewage obtained after disinfection meet the standard. According to the domestic sewage treatment process, the arrangement of the adjustment pool can balance the water amount and the water quality, and continuous operation of follow-up treatment units is ensured. Through the combination of the characteristics of domestic sewage, anaerobic treatment and aerobic treatment arecombined for biochemical treatment, a large part of organic matter in sewage can be treated, and the purification effect is good.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a domestic sewage treatment process. Background technique [0002] In the treatment of kitchen sewage, toilet sewage, and other daily sewage, because the concentration of the above-mentioned several domestic organic substances is relatively low, the biodegradability is good. In order to protect the environment, the part of the domestic sewage that cannot be discharged into the sewage treatment plant must be treated at the first level, and only after it meets the national or local discharge standards can it be allowed to enter the corresponding water body or be reused. [0003] However, in the existing technology, most of the domestic sewage is treated with grids and first-stage sedimentation, and finally the pretreated sewage is discharged to the corresponding sewage treatment plant. This treatment method is unreasonable and takes a long time to process. , the processin...

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Problems solved by technology

[0003] However, in the existing technology, most of the domestic sewage is treated with grids and first-stage sedimentation, and finally the pretreated sewage is discharged to the corresponding sewage treatment plant. This treatment method is unreasonable and takes a long time to process. , the processing effect is not good

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