水资源与水工程学报

赵智超，张为堂，崔鹏，黄剑明，史文燕，陈永志.生物接触氧化法-人工湿地处理常低温生活污水水资源与水工程学报[J].,2018,29(5):28-34

生物接触氧化法-人工湿地处理常低温生活污水

BCO-constructed wetland treatment of domestic sewage under normal and low temperatures

DOI：10.11705/j.issn.1672-643X.2018.05.05

中文关键词: 生物接触氧化法(BCO)-人工湿地；常低温生活污水；水力停留时间；水力负荷污水处理

英文关键词:biological contact oxidation(BCO)-constructed wetland domestic sewage under normal and low temperatures hydraulic retention time(HRT) hydraulic loading rate(HLR) waste water treatment

基金项目:国家自然科学基金项目(51668033) ；环境工程甘肃省高等学校特色专业项目（101004）；兰州交通大学教改重点项目

作者	单位
赵智超¹，张为堂²，崔鹏³，黄剑明¹，史文燕¹，陈永志¹	(1.兰州交通大学环境与市政工程学院，甘肃兰州 730070； 2.北控水务（中国）投资有限公司，北京 100124； 3.成都市建筑设计研究院，四川成都 610015)

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中文摘要:

采用生物接触氧化法(BCO)-人工湿地组合工艺处理常低温生活污水，当BCO的气水比为7∶1、回流比为100%、人工湿地的水力停留时间（HRT）为9 h，人工湿地的水力负荷（HLR）为3.65 m³/（m²/d）时，在常温下（22~27℃），组合工艺出水COD、NH⁺₄—N、TN和PO₄^3-—P分别为14.60、1.40、12.70和0.43 mg/L，出水满足《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准；而低温下（7~12℃），组合工艺出水COD、NH⁺₄—N、TN和PO₄^3-—P分别为29.60、9.90、19.90和0.88 mg/L。保持气水比和回流比不变，控制低温下BCO的HRT为12 h，人工湿地的HLR为2.74 m³/（m²/d）时，组合工艺出水COD、NH⁺₄—N、TN和PO₄^3-—P为18.40、6.17、14.17和0.66 mg/L，去除率分别为90.60%、87.80%、75.40% 和85.30%。结果表明：常、低温下该组合工艺均能够实现污染物的良好去除，为实际工程应用提供参考。

英文摘要:

The combined process of BCO-constructed wetland was applied to treat domestic sewage under normal and low temperatures. When the ratio of air to water was 7∶1, the ratio of reflux was 100%, the hydraulic retention time(HRT) was 9h and the hydraulic load rate(HLR) of constructed wetland was 3.65 m³/(m²/d), the combined process effluent concentrations of COD、NH⁺₄—N、TN and PO₄^3-—P were 14.60,1.40,12.70 and 0.43mg/L respectively at normal temperature (22-27℃), which could meet the first class A standards of “Discharge standard of pollutants for municipal wastewater treatment plant”(GB 18918-2002) of China. At low temperature (7-12℃), the combined process effluent concentrations of COD,NH⁺₄—N,TN and PO₄^3-—P were 29.60,9.90,19.90 and 0.88mg/L respectively. When the ratio of air to water and reflux remained unchanged, the HRT of BCO at 12 h and the HLR of constructed wetland of 2.74 m³/(m²/d), the combined process effluent concentrations of COD、NH⁺₄—N、TN and PO₄^3-—P were 18.40,6.17,14.17 and 0.66mg/L, the corresponding removal rates were 90.60%,87.80%,75.40% and 85.30%. The results showed that the combined process could achieve a good removal of pollutants under normal and low temperatures, which provided a theoretical basis for practical engineering applications.

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