Funding for this research was provided by:
National Natural Science Foundation of China (41601275)
the National Water Pollution Control and Treatment Science and Technology Major Project of China (2014ZX07104-005)
the Fundamental Research Funds for the Central Universities of China (2042015kf0045)
Article History
Received: 14 April 2017
Revised: 13 October 2017
Accepted: 6 June 2018
First Online: 7 July 2018