Sewage treatment system and sewage treatment process for strengthening efficient utilization of raw water carbon source

Abstract

The invention discloses a sewage treatment system and a sewage treatment process for strengthening efficient utilization of a raw water carbon source, and belongs to the technical field of water treatment. The system comprises a pretreatment system, a front super-effect separation system, a carbon source recovery system, a pure membrane MBBR biochemical system, a rear super-effect separation system and a sludge treatment system. The sewage treatment process includes: firstly, waste residues and sand in sewage are removed through a pretreatment system, then the pretreated sewage enters a frontsuper-effect separation system, and most of insoluble COD, TP, TN, SS and other pollutants are subjected to enhanced removal; then the sludge generated by the front super-effect separation process ishydrolyzed and fermented through a carbon source recovery system, and the dissolved-state high-quality carbon source is extracted from the sludge for denitrification of a subsequent biochemical system; and soluble COD, NH3-N and TN are subjected to biochemical treatment through a pure membrane MBBR biochemical system and then enter a rear super-effect separation system. According to the system andthe process, the effluent can stably reach the standard of quasi-surface IV or quasi-surface III type water.

Description

Technical field [0001] The invention belongs to the technical field of water treatment, and specifically relates to a sewage treatment system and a treatment process for enhancing the efficient utilization of raw water carbon sources. Background technique [0002] With the continuous acceleration of industrial and agricultural development and the process of urbanization, my country's water environment situation has become increasingly severe, which is mainly reflected in the two levels of water shortage and water pollution. The pollution of surface water, groundwater and drinking water not only restricts economic and social development and progress, but also threatens human health. my country's surface water and groundwater are polluted to varying degrees. Affected by the pollution of surface water and groundwater, there are also excessive pollutants in drinking water sources. The current situation of water pollution is not optimistic. Water conservation and pollution control ha...

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Problems solved by technology

[0006] In order to solve the technical problems of large footprint and high energy consumption in the sewage treatment system in the prior art, one of the purposes of the present invention is to provide a sewage treatment system that enhances the efficient utilization of raw water carbon sources, which integrates various systems, It saves floor area, low energy consumption, and good treatment effect, and can stably meet the quasi-IV or quasi-III water discharge standard

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