Enhancement of Coagulation Process with Floatation for the Treatment of Dyeing Wastewater

Abstract:

Coagulation process enhanced with floatation was applied to treat dyeing wastewater generated from the production process of textile. The efficiency was mainly evaluated in terms of the chemical oxygen demand (COD) removal of mixed wastewater. Comparing the coagulation experiment with coagulation-floatation experiment on the performance of COD removal for the dyeing wastewater, we can find that floatation promote the effect of coagulation. The results show that: the COD removal of the dyeing wastewater in the coagulation-floatation experiment can reach 68% after floatation with the speed of 1.2 L/min for 4 min and maintaining standstill for 90 min, which is 17% more than the result appeared in coagulation experiment, under the conditions of the dosage of AlCl₃ and PAM is 100 mg/L and 15 mg/L, respectively.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2536-2541
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2536
• Online since: August 2013
• Authors: Yuan Hui Wu*, Hui Ting Zhou, Chun Hui Du, Li Guang Wu, Mei Qiang Cai, Ting Wang, Chun Jin Wu
• Keywords: Coagulation, Dyeing Wastewater, Enhancement, Floatation

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