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当前位置: 首页 > 文章 > 季节变化对组合湿地污水处理系统净化力的影响 中南林业科技大学学报 2017,37 (9) 124-128
Position: Home > Articles > Effect of seasonal changes on pollutant removal rate of a constructed wetland system established for treatment of municipal sewage Journal of Central South University of Forestry & Technology 2017,37 (9) 124-128

季节变化对组合湿地污水处理系统净化力的影响

作  者：
付新喜;吴晓芙;陈永华;奚成业;周鑫
单  位：
中南林业科技大学环境科学与工程学院
关键词：
城镇污水;人工湿地中试系统;污染物去除率;季节效应
摘  要：
建立了用以处理城镇污水的"表流A-潜流B-表流C"组合人工湿地(400 t/d)中试系统,监测分析了组合系统净化力的季节性变化规律。结果表明:组合系统出水的5项指标年均值达到了国家城镇污水处理厂污染物排放[GB 18918—2002]一级A标准,A、B、C单元之间净化力差异显著,其中B单元对系统净化力的贡献率最高;组合系统COD去除率存在显著的季节性差异,冬季COD去除率明显低于其他季节;组合系统氮、磷去除率季节性差异不显著,原因是B单元对系统氮、磷去除率贡献大,而其氮、磷去除率受季节影响小。要克服季节温度变化对组合系统净化力的影响,有必要进一步增强B单元的吸附过滤功能和提高系统冬季的生物活性。
译  名：
Effect of seasonal changes on pollutant removal rate of a constructed wetland system established for treatment of municipal sewage
作  者：
FU Xinxi;WU Xiaofu;CHEN Yonghua;XI Chengye;ZHOU Xin;College of Environmental Science and Engineering, Central South University of Forestry and Technology;
关键词：
municipal sewage;;pilot constructed wetland system;;pollutant removal rate;;seasonal effect
摘  要：
A pilot constructed wetland system consisting of a combination of "surface-flow A-subsurface flow B-surface flow C" units was established for treatment of municipal sewage. The effect of seasonal temperature change on the pollutant removal rate of the pilot system was monitored. The results showed that the annual average effluent quality of the pilot system met the 1 st grade A of the national discharge standards for pollutants for municipal wastewater treatment [GB 18918-2002]. There were significant differences in treatment efficiency among Units A, B and C, of which Unit B gave the highest pollutant removal rate for all analyzed water quality index. The COD removal rate of the pilot system in winter was apparently lower than that in other seasons and the difference was significant. In comparison, the difference in removal rates of phosphorus and nitrogen of the pilot system was insignificant throughout the whole year. The reason is that the major parts of phosphorus and nitrogen were removed in unit B while the removal rates of phosphorus and nitrogen in unit B were little affected by temperature changes. Further enhancement of the bio-activity of the pilot system in cold season and increase in the adsorption and filtration capacity of Unit B are essential measures to strengthen the treatment efficiency and stability of the pilot system.

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