Title :
An Experimental Study on Choosing Coagulant and Determining Optimum Coagulation Conditions for Treating Wastewater from Regenerate Paper Industries
Author :
Zou, Youqin ; Zhang, Wentao ; Zhou, Wenbin
Author_Institution :
Key Lab. of Poyang Lake Ecology & Bio-resource Utilization, Nanchang Univ., Nanchang, China
Abstract :
Orthogonal experiment was designed to choose coagulant for treatment of regenerate paper industry wastewater. Polyaluminium chloride (PAC) was chosen based on the value of K, K mean, and R of each level of different factors, when taking supernatant liquid COD as an index for evaluating. Furthermore, the optimum coagulation condition was determined when the dosage was 1.24 g / L, and pH value was 7. Under optimum coagulation conditions, the COD removal rate of wastewater was up to 76.78%, pH value was 6.33, turbidity was 10NTU, and the color of the supernatant liquid was slightly yellow. That made preparations for the subsequent land treatment. The Experimental temperature is 14.5 ~ 18.5°C.
Keywords :
aluminium compounds; coagulation; pH; paper industry; turbidity; wastewater treatment; AlCl; coagulant; land treatment; pH value; polyaluminium chloride; regenerate paper industry wastewater; supernatant liquid; supernatant liquid COD; turbidity; wastewater treatment; Board of Directors; Chemical industry; Coagulation; Electric potential; Environmentally friendly manufacturing techniques; Industrial pollution; Investments; Metals industry; Pulp and paper industry; Wastewater treatment;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5517479
