Patents by Inventor Bichuan Yu

Bichuan Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Oily sewage pretreatment method and device without air floatation
    Patent number: 12017939
    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.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: June 25, 2024
    Assignees: Shanghai Huachang Environmental Protection Co., Ltd., Sichuan University, East China University of Science and Technology
    Inventors: 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
  • OILY SEWAGE PRETREATMENT METHOD AND DEVICE WITHOUT AIR FLOATATION
    Publication number: 20220009811
    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.
    Type: Application
    Filed: March 19, 2019
    Publication date: January 13, 2022
    Inventors: 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