Activated sludge screening treatment method using compacting agent

• Main Authors: LI YINGYING, JIANG LIWEI, SHI JUNYAN, WANG HUAGANG, HE PEITAO, MENG QINGLIANG, DONG CE, PENG YUJUAN, XIE LEIJIE, WANG WEI, ZHANG HONGWEI, CUI KE, LI ZHIYAN, HU YANLI, ZHOU JUNLI, ZHANG FENG, LI KEKE, HE JUNFU, SHI YANLI, LI YINGJUN
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a method for screening activated sludge by using a compacting agent, which specifically comprises the following steps: removing suspended pollutants from sewage, carrying out degradation treatment and mud-water separation, and enabling part or all of the obtained activated sludge to enter an activated sludge cyclone screening device for cyclone separation, the activated sludge which is not subjected to cyclone separation flows back to the biological reaction tank, the heavy activated sludge which is subjected to cyclone separation and has good settling performance flows back to the biological reaction tank, the rest light activated sludge and a compacting agent enter the activated sludge mixing device to be subjected to mixed reaction, and the mixture is screened by the secondary screening device; the activated sludge with good settling performance flows back to the biological reaction tank, one part of the residual activated sludge is subjected to oxidation treatment and then flows b