微电解-UASB-MBBR处理中药提取废水研究与应用
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摘要
采用微电解-UASB-MBBR工艺对中药提取废水进行处理,对工程设计参数进行了探索。结果表明:当微电解水力停留时间为4 h,UASB COD容积负荷为3.0 kg/(m~3·d),MBBR水力停留时间为20 h时,经混凝脱色后的出水水质达到《中药类制药工业水污染物排放标准》(GB 21906—2008)中新建企业水污染物排放限值要求,且工艺运行效果稳定,费用较低。
The combined process,micro-electrolysis-UASB-MBBR,has been applied to the treatment of traditional Chinese medicine extracting wastewater,and the parameters of engineering design investigated. The results show that when the micro-electrolysis hydraulic retention time is 4 h,COD volume load of UASB 3.0 kg/(m~3·d),and MBBR hydraulic retention time 20 h,the water quality of the coagulated and decolored effluent meets the requirements for the water pollutant discharge limiting value in China newly built enterprises,specified in the Discharge Standard of Water Pollutants from Pharmaceutical Industry of Chinese Medicine Category(GB 21906—2008). The running effect of this technology is stable,and its investment costs are low.
The combined process,micro-electrolysis-UASB-MBBR,has been applied to the treatment of traditional Chinese medicine extracting wastewater,and the parameters of engineering design investigated. The results show that when the micro-electrolysis hydraulic retention time is 4 h,COD volume load of UASB 3.0 kg/(m~3·d),and MBBR hydraulic retention time 20 h,the water quality of the coagulated and decolored effluent meets the requirements for the water pollutant discharge limiting value in China newly built enterprises,specified in the Discharge Standard of Water Pollutants from Pharmaceutical Industry of Chinese Medicine Category(GB 21906—2008). The running effect of this technology is stable,and its investment costs are low.
引文
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[3]谢永新.高浓度中药提取物生产废水处理工程实例[J].工业用水与废水,2012,43(4):74-75.
[4]任朝斌,孙润超.铁碳微电解-UASB-两级HCR-气浮工艺处理中成药生产废水[J].水处理技术,2012,38(9):130-135.
[5]刘钰钦,洪志强,王京刚,等.微电解-AO-臭氧氧化-BAF组合工艺处理制药废水[J].水处理技术,2017,43(7):89-93.
[6]黄丽坤,申海瑞,王广智,等.水解酸化-MBBR处理乳品废水的工艺优化实验研究[J].黑龙江大学自然科学学报,2018,35(4):460-466.
[7]许劲,洪国强,赵绪光,等.水解酸化/MBBR工艺处理中药废水的中试研究[J].中国给水排水,2011,27(3):1-4.