Engineering Example of Compact Type Sewage Treatment Plant Weijian Zhou, Wenzhong Liang, Yining Ding, Yutao Lei, Zhihua Pang and Zhipeng Zhuang E3S Web Conf., 145 (2020) 02052 Published online: 06 February 2020 DOI: 10.1051/e3sconf/202014502052