The Optimization Parameters and Performance of Biological Aerated Filter with Sludge-Glass Ceramic Particles as Biofilter for Dairy Wastewater Treatment

Yan Dong, Yan Lou, Ji-hong Zhao, Yong-de Liu
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引用次数: 1

Abstract

Abstract: Sludge-glass ceramic particles were used as filter media for single biological aerated filter (BAF) to treat dairy wastewater in this study. Seed sludge was inoculated from Zhengzhou Wulongkou wastewater treatment plant. When bio-film was promoted and the effluent contamination removal rates above 40% after one week's operation, started to optimize the operation parameters such as pH, hydraulic retention time (HRT) and influent load, taking COD, NH4+-N,TN as well as TP removal rate as standards. The result indicated that the best removal efficiency of contaminations in effluent was under the conditions of pH 7-8, HRT 8h, COD 2055 mg/L and NH4+-N 70mg/L. And the effluent COD was about 80-90 mg/L, NH4+-N 7-10mg/L, which had already reached the desired standards. Simultaneously, it obviously showed that single-BAF was an ideal technology for dairy wastewater treatment, regardless of high COD concentration above 2000mg/L.
污泥-玻璃陶瓷颗粒曝气生物滤池处理乳业废水的优化参数及性能研究
摘要采用污泥-玻璃陶瓷颗粒作为单曝气生物滤池(BAF)的过滤介质处理乳制品废水。对郑州乌龙口污水处理厂的种子污泥进行接种。当生物膜得到推广,运行一周后出水去除率达到40%以上时,以COD、NH4+-N、TN、TP去除率为标准,开始对pH、水力停留时间(HRT)、进水负荷等运行参数进行优化。结果表明:出水pH为7 ~ 8、HRT为8h、COD为2055 mg/L、NH4+-N为70mg/L时,出水污染物去除率最高。出水COD为80 ~ 90mg /L, NH4+-N为7 ~ 10mg/L,已达到要求标准。同时,在COD浓度高于2000mg/L的情况下,单baf是一种较为理想的乳品废水处理工艺。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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