کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4998033 | 1459922 | 2016 | 11 صفحه PDF | دانلود رایگان |
- P-removal efficiency decreased to 34.6% under the effect of ERY (10Â mg/L).
- P-removal efficiency decreased to 0.0% under the effect of OTC (10Â mg/L).
- Aerobic stage in EBPR system was more seriously inhibited than anaerobic stage.
- OTC showed more serious inhibitory effect on microorganism's oxygen utilization.
- Neither synergistic effect nor antagonistic effect was detected between ERY and OTC.
The effects of Erythromycin (ERY) and oxytetracycline (OTC), including individual and combinative effect, on enhanced biological phosphorus removal (EBPR) system within a short-term (24Â h) were evaluated in this study. Results showed that the P-removal efficiency decreased to 34.6% and 0.0% under the effect of ERY (10Â mg/L) and OTC (10Â mg/L) for 24Â h. OTC concentration higher than 5Â mg/L was sufficient to cause serious adverse impact on the EBPR performance. While the performance of EBPR system will be impacted by ERY above 10Â mg/L. OTC, due to its special antibacterial action to the gram-negative bacteria which most PAOs belong to, has more serious negative effect on the EBPR performance than ERY does. Moreover, in the combined antibiotics test, neither synergistic nor antagonistic effect was detected between ERY and OTC. Finally, ERY (10Â mg/L) and OTC (10Â mg/L) could inhibit the microorganisms' activity, while couldn't induce serious microorganisms death within 24Â h.
Journal: Bioresource Technology - Volume 221, December 2016, Pages 15-25