Nitrification Inhibition by Quatenary Ammonium Compounds in Wastewater from Small Communities and Schools
Abstract:Quaternary ammonium compounds (QAC) are used extensively in many different types of products. They are rated as nontoxic but are inhibitory, if not toxic at very low levels to nitrifying bacteria. Examples of typical QAC products and their use are discussed in the paper. The best approach to prevent inhibition of nitrification where nitrogen is a prime concern in wastewater discharges is to prevent or remove the QAC before it gets into the wastewater. However, this is frequently not practical. The complications of removing QAC in a treatment system are magnified because it is very slow to biodegrade and very little is known of its degradation rate. Several approaches to treating QAC are presented with examples given. It is concluded that treatment is possible with the methods outlined and detailed designs are difficult because of the lack of degradation rates.
Document Type: Research Article
Publication date: 2008-01-01
More about this publication?
- Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Ingenta Connect is not responsible for the content or availability of external websites