Invention Application
- Patent Title: Chemically enhanced primary sludge fermentation method
- Patent Title (中): 化学增强一级污泥发酵法
-
Application No.: US10853472Application Date: 2004-05-24
-
Publication No.: US20050016920A1Publication Date: 2005-01-27
- Inventor: Bruce Johnson
- Applicant: Bruce Johnson
- Applicant Address: US CO Englewood
- Assignee: CH2M HILL, Inc.
- Current Assignee: CH2M HILL, Inc.
- Current Assignee Address: US CO Englewood
- Main IPC: C02F
- IPC: C02F20060101 ; C02F1/52 ; C02F3/00 ; C02F3/30 ; C02F9/14 ; C02F11/02

Abstract:
A method of treating wastewater to increase effluent volatile fatty acid content consisting of providing wastewater to a primary treatment vessel and adding a select quantity of a chemical, typically an aluminum or iron salt, to the wastewater, enhancing the separation of organic matter. Separated organic matter is then removed from the chemically treated wastewater forming a primary sludge and a primary effluent. A portion of the primary sludge is fermented to form a volatile fatty acid rich liquor. The volatile fatty acid rich liquor may then be used with the primary effluent, directed to a bioreactor, thereby forming a volatile fatty acid enriched bioreactor feed. The volatile fatty acid enriched influent may be further treated through known biological phosphorous and nitrogen removal methods.
Public/Granted literature
- US06982036B2 Chemically enhanced primary sludge fermentation method Public/Granted day:2006-01-03
Information query