Invention Grant
- Patent Title: Biological wastewater treatment and reuse utilizing sulfur compounds as electron carrier to minimize sludge production
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Application No.: US13991053Application Date: 2011-12-02
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Publication No.: US09884779B2Publication Date: 2018-02-06
- Inventor: Guanghao Chen , Ho Kwong Chui , Hui Lu , Di Wu , Tianwei Hao , Feng Jiang , Marinus Cornelis Maria Van Loosdrecht
- Applicant: Guanghao Chen , Ho Kwong Chui , Hui Lu , Di Wu , Tianwei Hao , Feng Jiang , Marinus Cornelis Maria Van Loosdrecht
- Applicant Address: CN Kowloon, Hong Kong
- Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Current Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Current Assignee Address: CN Kowloon, Hong Kong
- Agency: Nath, Goldberg & Meyer
- Agent Jerald L. Meyer; Stanley N. Protigal
- International Application: PCT/CN2011/002019 WO 20111202
- International Announcement: WO2012/071793 WO 20120607
- Main IPC: C02F3/00
- IPC: C02F3/00 ; C02F3/02 ; C02F3/28 ; C02F3/30 ; C02F101/10 ; C02F101/16
Abstract:
Biological wastewater treatment of wastewater is performed by oxidizing organic carbon with sulfur or a sulfur compound as an electron carrier, and reducing the sulfur or sulfur compound to sulfide. The sulfide is oxidized with nitrate or oxygen. If necessary, ammonia is oxidized to nitrate and then reduced to nitrogen gas. The process is effective for saline waste water facilities, as well as non-saline waste water facilities.
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