Optimization treatment of sludge heavy metals by citric acid and GLDA
XU Dayong, HONG Yajun, TANG Hai, CHENG Weiming, SONG Zhenxia,ZHAN Lingling, YAO Qiaofeng
CIESC Journal . 2017, (6): 2535 -2545 .  DOI: 10.11949/j.issn.0438-1157.20170001