Abstract
The microbial elimination of nitrogen by combined nitrification and denitrification is a well-known technology in wastewater treatment processes. Nitrification in wastewater treatment plants is a sensitive microbiological process, which can be disturbed by toxic substances. Two laboratory methods for nitrification inhibition (ISO standard 9509 and a modification of the respiration inhibition test ISO 8192) were investigated with selected substances and compared with results from sewage model plants. For the prediction and prevention of interferences, the simple but reliable laboratory test methods proved to be very suitable. The tests in laboratory plants allowed a much more comprehensive evaluation of nitrification processes and showed their dependence on biodegradation and adaptation processes. The inhibition of nitrification depended on the mode of application and the biodegradability of the potential inhibitory compound and was much less severe with biodegradable substances than with poorly degradable ones.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
