2013•Energy Environmental ProtectionRequires access
INVESTIGATION OF ORTHOGONAL EXPERIMENTS OF COAGULATION FOR MINE DRAINAGE WATER WITH PARTICULAR SUSPENDED SOLIDS
Guo Zhong-quan
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Abstract
Aimed at t he quality of mine drainage water with particular suspended solids mainly consisted of superfine rock powders at a specific period,this paper investigated the optimum conditions and the influential degree of effluent turbidity by various factors in the coagulation process,with designing L25(56) orthogonal experiments.The results show that the significant sequence of influence by various factors to effluent turbidity was flocculant doses flocculant species PAM doses revolving speed of flocculation flocculation time PAM dosing interval.And the optimum conditions were: selecting PAFC as flocculant;PAFC dose of 250 mgoL-1;PAM dose of 0.50 mgoL-1;PAM dosing interval of 120 s;revolving speed of flocculation and time being quick stirring speed of 190 r.min-1 with 2 min,intermediate stirring speed of 70 r.min-1 with 10 min,and slow stirring speed of 40 r.min-1 with 13 min,respectively.