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Preliminary Study on the Application of Electrocoagulation Process in Cotton Pulping Black Liquor Treatment
  
DOI：10.11980/j.issn.0254-508X.2013.04.004
Key Words:cotton pulp black liquor  coagulation  electrocoagulation
Fund Project:基金项目：国家科技部国家十二五科技支撑项目（项目编号：2011BAC11B04）。
Author NameAffiliation
张文晖 天津科技大学天津市制浆造纸重点实验室,天津,300457 
萨楚拉 天津科技大学天津市制浆造纸重点实验室,天津,300457 
胡惠仁 天津科技大学天津市制浆造纸重点实验室,天津,300457 
车大军 天津科技大学天津市制浆造纸重点实验室,天津,300457 
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Abstract:The paper investigated the effect of electrocoagulation, chemical coagulation and the combined process on the removal of CODCr and color from the diluted cotton pulping black liquor. The results showed that when initial pH was 9.0, current density was 150 A/m2 and treatment time was 90 min, the removal rates of CODCr and color were 64.0% and 88.6% respectively by electrocoagulation method. Both initial wastewater consistency and NaCl consistency had little effect on the removal efficiency. When initial pH was 6, PAC dosage was 500 mg/L and PAM dosage was 3 mg/L, the removal rates of CODCr and color were 39.3% and 78.2% respectively by chemical coagulation method. When initial pH was 9.0, PAC dosage was 200 mg/L, current density was 100 A/m2 and treatment time was 60 min, the removal rates of CODCr and color were 64.4% and 91.3% respectively by the combined method.
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