Upgrading Semi-Continuous Mesophilic Anaerobic Digestion of Waste Activated Sludge by Combined Ultrasonic, Thermo-Alkaline Pretreatment
XU Hui-min, QIN Wei-hua, LI Zhong-lin, GU Qi, DAI Xiao-hu
Journal of Ecology and Rural Environment . 2019, (1): 91 -97 .  DOI: 10.19741/j.issn.1673-4831.2018.0056