Researches on water purification by two-grade direct ceramic particle filtration, automatic alum feeding-micro flocculation
Liang Hao, Sheng Xuanjun, Liu Chuansheng, Yi Lujing
INDUSTRIAL WATER TREATMENT . 2003, (5): 44 -47 .  DOI: 10.11894/1005-829x.2003.23.(5).44