[1] N China Elect Power Univ, Res Acad Energy & Environm Studies, Beijing 102206, Peoples R China
[2] Univ Regina, Fac Engn & Appl Sci, Environm Syst Engn Program, Regina, SK S4S 0A2, Canada
[3] China Agr Univ, Coll Water Conservancy & Civil Engn, Beijing 100083, Peoples R China
[4] Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100022, Peoples R China