The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2024
Filed:
Mar. 19, 2019
Shanghai Huachang Environmental Protection Co., Ltd, Shanghai, CN;
Sichuan University, Sichuan, CN;
East China University of Science and Technology, Shanghai, CN;
Hualin Wang, Shanghai, CN;
Yuxiao Sun, Shanghai, CN;
Jiandong Hu, Guangdong, CN;
Yi Liu, Shanghai, CN;
Huiqing Yu, Zhejiang, CN;
Haiyang Bai, Zhejiang, CN;
Bichuan Yu, Zhejiang, CN;
Dun Wang, Zhejiang, CN;
Xia Jiang, Sichuan, CN;
Zhishan Bai, Shanghai, CN;
Qiang Yang, Shanghai, CN;
Jianqi Chen, Shanghai, CN;
Wei Yuan, Shanghai, CN;
Qisong Shen, Shanghai, CN;
Shanghai Huachang Environmental Protection Co., Ltd., Shanghai, CN;
Sichuan University, Sichuan, CN;
East China University of Science and Technology, Shanghai, CN;
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.