Title :
Using Modified Bentonite Coagulation-acidation for COD and Color Removal from Scouring Effluent
Author :
Xiaojia, Tang ; Lihui, Ma ; Yang, Hao ; Shuang, Liu ; Lili, Wang ; Yimin, Zhu
Author_Institution :
Inst. of Environ. Remediation, Dalian Maritime Univ., Dalian, China
Abstract :
In this work, chemical oxygen demand (COD) removal and decolorization of polyester scouring effluent by coagulation-acidation have been studied experimentally. Acidulated bentonite was used as coagulant. The effects of bentonite dosage, PAM dosage, stirring time, and pH after acidation on the efficiency of COD and color reduction were studied by orthogonal methodology. Finally the optimum conditions have been obtained. The products of coagulation and acidation were test by Fourier transform infrared spectra. It has been concluded that the most of residual color and suspended solid are removed during the coagulation process and the acidation product is terephthalic acid. Under the optimum condition, the removal efficiencies of COD and color are 79.7% and 90%, respectively.
Keywords :
Fourier transform spectra; coagulation; effluents; industrial waste; textile industry; wastewater treatment; COD removal; Fourier transform infrared spectra; acidation; bentonite; chemical oxygen demand removal; coagulation; color reduction; color removal; decolorization; polyester scouring effluent; Acidation; COD; Coagulation; Color; Scouring Effluent;
Conference_Titel :
Digital Manufacturing and Automation (ICDMA), 2010 International Conference on
Conference_Location :
ChangSha
Print_ISBN :
978-0-7695-4286-7
DOI :
10.1109/ICDMA.2010.372
