Ziyan Yang,
Guo, Feng
Wang, Qing
Zhao, Jiaying
Wang, Yilong
Zhu, Xinfeng
Mao, Yanli
Wu, Junfeng
Song, Zhongxian
Hu, Hongwei
Peng, Wei
Liu, Biao
Article History
Received: 4 July 2022
Revised: 9 December 2022
Accepted: 30 December 2022
First Online: 10 April 2023
COMPLIANCE WITH ETHICAL STANDARDS
: The authors have no financial conflicts of interest to declare. This article adheres to ethical standards. The authors are committed to ethical research guidelines, including compliance with laboratory safety regulations, respect for participants' privacy, and protection of participants' physical and psychological well-being, and the authors will ensure that all study results are truthful and free from any deception.
: In briefly, BF, BY and PDS were collected from municipal WWTPs which used the oxidation ditch process. YZA and YZB was collected from municipal WWTPs which used anaerobic-anoxic-oxic process. LJ was collected at the WWTP of a chlor-alkali chemical company, which mainly produces basic chemical raw materials such as caustic soda and PVC resin. The wastewater in LJ was first neutralized by acid-base, followed by hydrolytic acidification and contact oxidation. LLY was collected at the WWTP of a nylon chemical company, whose main products were caprolactam, cyclohexanol, and cyclohexanoic acid The LLY treated effluent was firstly pretreated with amoximation, then passed through the Bio-stability Bed and entered the anaerobic tank, followed by the MSBR (Modified Sequencing Batch Reactor).