Abstract
Abstract Livestock wastewater is characterized by chlortetracycline (CTC) contamination and alkalinity insufficiency, and ammonia is difficult to remove from this type of wastewater. This study explores the combined effects of alkalinity limitation and CTC addition on the ammonia removal process in sequencing batch reactors. CTC concentrations in the inflow of four bench-scale reactors were 0, 5, 20, and 100 mg/L, and the operation phase was divided into five stages by alkalinity/nitrogen (ALK/N) ratios (7.14, 4.76, 3.56, 2.38, and 0). As the ratio of ALK/N decreased from 7.14 to 0, the ammonia removal efficiency dropped from 98.2% to 28% and the ammonia oxidation rate dropped gradually from 3.713 to 1.416 mg/g VSS · h. Existence of CTC has an inhibitory effect on ammonia oxidation, ammonia removal efficiency decreased with CTC concentration increases, the same goes for the ammonia oxidation rate. With a decrease in alkalinity, inhibition difference of ammonia removal caused by CTC is narrowed, indicating...
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.
