Bentonite Adsorption & Coagulation Treatment of Recycled Fiber Pulping Wastewater

Tingzhi Liu, Kaiyang Zheng, Defa Wang, Shuai Li, Haoyu Wang

School of Material Science& Technology, Tianjin University of Science & Technology, Tianjin Key Laboratory of Pulp & Paper, Tianjin, China.

DOI: 10.4236/eng.2013.510B064                

Abstract

A bentonite & PAM particle flocculation system was employed in recycled fiber pulp wastewater treatment in this paper. The optimum conditions of the adsorption & coagulation treatment was explored and optimized and effects of the treatment were focused on, especially stickies substances removal. Under the optimal conditions, the removal of MTBE extract and cationic demand reached 91.26% and 86.93%, and the average particle size in the treated wastewater pollutants is reduced from 40.95μm to 0.5μm. In this treatment the removal of CODcr, turbidity, SS and color were 89.67%, 99.56%, 95.58% and 93.08%, respectively. The results showed that the particle flocculation system was effective for the treatment of recycled fiber pulp wastewater, especially for controlling the stickies.

Keywords

Recycled Fiber Pulp; Wastewater; Stickies, Bentonite; Coagulation

Conflicts of Interest

The authors declare no conflicts of interest.

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