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| Treatment of Water-based Ink Wastewater by Coagulation-flocculation Process |
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| DOI：10.11980/j.issn.0254-508X.2016.03.003 |
| Key Words:PAC CPAM pH value water-based ink wastewater flocculation |
| Fund Project:本课题得到国家科技部国家“十二五”科技支撑项目(2011BAC-11B04)和天津市制浆造纸重点实验室(天津科技大学)开放基金资助项目(201303)的资助。 |
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| Abstract:Treatment of water-based ink wastewater by coagulation-flocculation process with PAC as coagulant and CPAM as flocculant was studied. Single-factor experiment and multi-factor experiment were applied to study the effect of pH, PAC dosage and CPAM dosage on removal efficiency of CODCr, color and turbidity. A 23 full central composite design (CCD) and response surface methodology (RSM) were employed to design the multi-factor experiment and optimize the three factors for the coagulation-flocculation process. Single factor experiment result showed that the decrease of pH could improve the removal efficiency as the function of coagulation-flocculation process was mainly based on charge neutralization and bridging. Multi-factor experiment result showed that the RSM approach was appropriate to optimiz the coagulation-flocculation process and the optimal conditions for the best treatment result of water-based ink were as the follows: PAC dosage 128.7 mg/L, CPAM dosage 4.9 mg/L, and initial pH value 6.51. |
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