title: Short-term performance of enhanced biological phosphorus removal (EBPR) system exposed to erythromycin (ERY) and oxytetracycline (OTC).
abstract: The effects of Erythromycin (ERY) and oxytetracycline (OTC), including individual and combinative effect, on enhanced biological phosphorus removal (EBPR) system within a short-term (24h) were evaluated in this study. Results showed that the P-removal efficiency decreased to 34.6% and 0.0% under the effect of ERY (10mg/L) and OTC (10mg/L) for 24h. OTC concentration higher than 5mg/L was sufficient to cause serious adverse impact on the EBPR performance. While the performance of EBPR system will be impacted by ERY above 10mg/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 (10mg/L) and OTC (10mg/L) could inhibit the microorganisms' activity, while couldn't induce serious microorganisms death within 24h.
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Zhetai
authors.initials: Z
authors.lastname: Hu
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China. Electronic address: pdsun@126.com.
authors.forename: Peide
authors.initials: P
authors.lastname: Sun
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; GL Environment Inc, Hamilton, Canada.
authors.forename: Zhirong
authors.initials: Z
authors.lastname: Hu
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Jingyi
authors.initials: J
authors.lastname: Han
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Ruyi
authors.initials: R
authors.lastname: Wang
authors.affiliation: School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Jiao
authors.affiliation: GL Environment Inc, Hamilton, Canada.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Yang
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D019149:Bioreactors; D004917:Erythromycin / Q000737:chemistry*; D010118:Oxytetracycline / Q000737:chemistry*; D010758:Phosphorus / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D000900:Anti-Bacterial Agents; D010758:Phosphorus; D004917:Erythromycin; D010118:Oxytetracycline
keywords: Combined inhibition effect; ERY; Enhanced biological phosphorus removal; OTC