Urban sewage treatment method and system

• Main Authors: CHEN QINBO, ZHANG WENZHI, CHEN QINGSONG, ZHONG SHIQIAN, YAO JUNCHAO, HE GUOCHEN
• Format: Patent
• Language: Chinese; English
• Published: 28.12.2018
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides an urban sewage treatment method and system. The method is used in the sewage treatment system. The sewage treatment system comprises a sewage regulating tank, a coarse grid, afine grid, a grit chamber, a biochemical tank, a secondary sedimentation tank and a disinfecting tank which are sequentially communicated. The biochemical tank is provided with an EBR filler, a lifting high-efficiency aeration system and a carbon source dosing system. The sewage flows into the coarse grid after being treated by the regulating tank, then flows into the fine grid with suspended solids intercepted by the coarse grid, then flows into the grit chamber with suspended solids intercepted by the fine grid, then flows into the biochemical tank after subjected to grit disposal, then flows into the secondary sedimentation tank after treated by the biochemical tank, then flows into the disinfecting tank after treated by the secondary sedimentation tank and flows into a clean water section after subjected to di