公开(公告)号：US12172918B2

公开(公告)日：2024-12-24

申请号：US17627461

申请日：2020-08-19

Applicant: SICHUAN UNIVERSITY ,  EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xia Jiang ,  Fengli Gan ,  Yi Liu ,  Yuxiao Sun ,  Hualin Wang ,  Yafang Han

IPC: C02F9/00 ,  C02F1/00 ,  C02F1/28 ,  C02F1/38 ,  C02F1/40 ,  C02F1/44 ,  C02F1/50 ,  C02F1/52 ,  C02F3/00 ,  C02F3/34 ,  C02F11/12 ,  C02F11/13 ,  C02F11/123 ,  C02F11/127 ,  C02F101/10 ,  C02F101/30 ,  C02F101/32

Abstract: A treatment system for domestic wastewater, relating to the technical field of wastewater treatment. The treatment system comprises a primary treatment system, a secondary treatment system, and a sludge treatment system; the secondary treatment system comprises a biochemical tank (21) and a sedimentation tank (22) that are sequentially connected; the biochemical tank (21) is connected to the primary treatment system; the secondary treatment system further comprises a second cylcone separator (23) and a power pump (24); one end of the power pump (24) is connected to a sludge outlet of the sedimentation tank (22) by means of a pipeline, and the other end of the power pump (24) is connected to a second feed pipe (232) of the second cylcone separator (23); a second underflow port (233) is connected to the biochemical tank (21) by means of the pipeline; a second overflow port (234) is connected to the sludge treatment system by means of the pipeline. After active sludge is treated by the second cylcone separator (23), the activity of the active sludge is increased by at least 15%, thereby improving the utilization rate of a resource, reducing the cost of an overall treatment system, also improving degradation efficiency in the biochemical tank, and facilitating popularization.

公开(公告)号：US12017939B2

公开(公告)日：2024-06-25

申请号：US17293730

申请日：2019-03-19

Applicant: Shanghai Huachang Environmental Protection Co., Ltd ,  Sichuan University ,  East China University of Science and Technology

Inventor： Hualin Wang ,  Yuxiao Sun ,  Jiandong Hu ,  Yi Liu ,  Huiqing Yu ,  Haiyang Bai ,  Bichuan Yu ,  Dun Wang ,  Xia Jiang ,  Zhishan Bai ,  Qiang Yang ,  Jianqi Chen ,  Wei Yuan ,  Qisong Shen

IPC: C02F9/00 ,  B01D17/04 ,  B04C9/00 ,  C02F1/00 ,  C02F1/38 ,  C02F1/40 ,  C02F3/30 ,  C02F101/32 ,  C02F103/36

CPC classification number: C02F9/00 ,  B01D17/045 ,  B04C9/00 ,  C02F1/38 ,  C02F1/40 ,  C02F3/30 ,  B04C2009/004 ,  C02F2001/007 ,  C02F2101/32 ,  C02F2103/365 ,  C02F2303/16

Abstract: An oily sewage pretreatment method without air flotation, comprising the following steps: (a) sedimentation separation: performing sedimentation separation on oily sewage to implement preliminary separation of oil, sludge, and water; (b) boiling bed separation: performing boiling bed separation on the oily sewage obtained by the preliminary separation to further remove dispersed oil, sludge, and sand from the oily sewage; (c) shape coalescence separation: performing shape coalescence separation on the oily sewage obtained by the boiling bed separation in step (b) to implement demulsification, coalescence, and separation of emulsified oil; and (d) biochemical treatment: the effluent obtained in step (c) directly enters an AOH biochemical system, an air flotation unit is omitted. Also disclosed is an oily sewage pretreatment apparatus without air flotation.

公开(公告)号：US20220009811A1

公开(公告)日：2022-01-13

申请号：US17293730

申请日：2019-03-19

Applicant: Shanghai Huachang Environmental Protection Co., Ltd ,  Sichuan University ,  East China University of Science and Technology

Inventor： Hualin Wang ,  Yuxiao Sun ,  Jiandong Hu ,  Yi Liu ,  Huiqing Yu ,  Haiyang Bai ,  Bichuan Yu ,  Dun Wang ,  Xia Jiang ,  Zhishan Bai ,  Qiang Yang ,  Jianqi Chen ,  Wei Yuan ,  Qisong Shen

IPC: C02F9/00 ,  C02F1/40 ,  C02F1/38 ,  C02F3/30 ,  B01D17/04 ,  B04C9/00

Abstract: An oily sewage pretreatment method without air flotation, comprising the following steps: (a) sedimentation separation: performing sedimentation separation on oily sewage to implement preliminary separation of oil, sludge, and water; (b) boiling bed separation: performing boiling bed separation on the oily sewage obtained by the preliminary separation to further remove dispersed oil, sludge, and sand from the oily sewage; (c) shape coalescence separation: performing shape coalescence separation on the oily sewage obtained by the boiling bed separation in step (b) to implement demulsification, coalescence, and separation of emulsified oil; and (d) biochemical treatment: the effluent obtained in step (c) directly enters an AOH biochemical system, an air flotation unit is omitted. Also disclosed is an oily sewage pretreatment apparatus without air flotation.