Sewage treatment system and treatment method

• Main Authors: HU JIXING, HUANG ANJUN, ZHOU YING, YASUTSUGU, ZOU SHANSHAN, LI RUXUN, CAO QINGYANG, XUAN ZHAN, MO RUDONG
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system and method. A sewage treatment system comprises a regulating tank, an aeration tank, a microbiological treatment tank, a sand filter tank, an extraction and diversion tank, a recycling tank, a membrane filtration tank and a disinfection tank, and the regulating tank, the aeration tank, the microbiological treatment tank, the sand filter tank and the extraction and diversion tank are communicated through pipelines; the extraction and diversion pool is provided with two water outlets, one water outlet is communicated with the water inlet of the recycling pool, the other water outlet is communicated with the ultrafiltration membrane pool, and the water outlet of the ultrafiltration membrane pool is communicated with the disinfection pool through a pipeline. Water flows back to enter the primary sedimentation tank twice, phosphorus in the water is removed, aeration and microbial reaction are carried out ag