Assessment of electrochemical and chemical coagulation as post-treatment for the effluents of a UASB reactor treating cellulose pulp mill wastewater

被引:6
作者
Buzzini, AP [1 ]
Motheo, AJ
Pires, EC
机构
[1] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Hydraul & Sanitat, BR-05508 Sao Paulo, Brazil
[2] Univ Sao Paulo, Dept Chem & Mol Phys, Inst Chem, BR-05508 Sao Paulo, Brazil
关键词
coagulation; electrolytic treatment; Kraft pulp effluents; post-treatment; UASB reactor;
D O I
10.2166/wst.2005.0515
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This paper presents results from exploratory experiments to test the technical feasibility of electrolytic treatment and coagulation followed by flocculation and sedimentation as post-treatment for the effluent of an UASB reactor treating simulated wastewater from an unbleached Kraft pulp mill. The electrolytic treatment provided up to 67% removal of the remaining COD and 98% of color removal. To achieve these efficiencies the energy consumption ranged from 14 Wh.l(-1) to 20 Wh.l(-1). The coagulation-flocculation treatment followed by settling required 350-400 mg.l(-1) of aluminium sulfate. The addition of a high molecular weight cationic polymer enhanced both COD and color removal, Both post-treatment processes are technically feasible.
引用
收藏
页码:183 / 188
页数:6
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