Study on the Treatment of Cold Rolling Wastewater by Using Bio-Fluidized Bed

Author:

Song Hong Quan1,Li Su Qin1,Min Xiao Li2

Affiliation:

1. University of Science and Technology Beijing

2. North China Power Engineering Co., Ltd. Of China Power Engineering Consulting Group

Abstract

Cold rolling wastewater is very difficult for treatment with high oil content, complex composition, toxicity and other characteristics. In the conventional treatment process, the most widely used methods are ultrafiltration(UF), gas-energy-management(GEM) and membrane bioreactor(MBR). In this study, we used the biological fluidized bed to treat the cold rolling wastewater, which made the bioaugmentation apply to anaerobic biofilter and biological fluidized bed (BF-BFB) combined process, and the optimal process parameters were determined. The contents of COD and NH4+-N were 3276.8mg/L and 67.65mg/L in inflow water, and after treatment, they were reduced to 108.8mg/L and 6.36mg/L, respectively. The removal rates of COD and NH4+-N were 96.68% and 91.01%.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference12 articles.

1. China Steel Industry Association, Development Policy of Iron and Steel Industry. (2005).

2. Wu Keming, Liu Hong, Pan Liuming, Shi Ying, Cao Jianbao, Zhang Chengzhou, Combined Flocculation Treatment in Cold Rolling Emulsifying Wastewater. Environmental Science & Technology. 2006. 2(29): 84-88.

3. Huang Weifeng, Quick Analysis of Oil Content in Cold Rolling Wastewater. Metallurgy Power. 2002. 5: 51-55.

4. Liu Wan, Hu Wei, Discussion on Ultrafiltration Membrane Treatment Technologies for Emulsion Wastewater in the Cold Rolling Mill. Industrial Water Treatment. 2006. 7(26): 74-77.

5. Xiao Bingyan, Ruan Hongquan, Liu Jietao, A/O2 and MBR Treatment of Oil-contained Wastewater from Steel Cold-rolling Mill. Water&Wastewater Engineering. 2007. 11: 64-67.

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