摘要
为研究以工业园区污水厂尾水为补给水源的景观水体中有机污染物的迁移转化规律,在2015年植物生长季对天津某工业园区人工湿地公园进行了水质采样分析。检测结果表明:湿地进水中ρ(COD)为44!70 mg/L,ρ(BOD)为2.8!5.6 mg/L;出水中ρ(COD)为43!60 mg/L,ρ(BOD)为3.3!4.8 mg/L。潜流湿地对污水处理厂排水具有较好的处理效果,BOD去除率为90%,COD去除率为10%!30%,出水B/C比值较进水有较大降低;潜流湿地出水进入表流湿地后,COD与BOD有所升高,其升高比例分别为10%、225%,这可能是因为表流湿地有水生植物生长,植物腐叶会导致有机物质释放。在湿地公园总出水前设置深水景观湖,有利于出水COD浓度进一步降低。
In order to research the migration and transformation of organic pollutants in a landscape water supplemented with the effluent of wastewater treatment plant（ WWTP） in the industrial area in the north China,samplings was conducted from the landscape water of artificial wetland park of industrial park in the season of plant growth in 2015. The results showed that the influent concentrations of COD and BOD were 44 ~ 70,2. 8 ~ 5. 6 mg/L,while the effluent concentrations of COD and BOD were 43 ~ 60,3. 3 ~ 4. 8 mg/L respectively. Average removal efficiencies of BOD and COD were 90%,10% ~ 30%respectively. The BOD/COD ratio decreased from the influent to the effluent by subsurface flow constructed wetland（ SSF）.In addition,the concentrations of COD and BOD were increased from the effluent of SSF to the influent of free water surface flow constructed wetland（ FWS）. The increase rates of COD and BOD were 10%,225% respectively. The leaves of the plants in the FWS would cause the release of organic matter. The results also showed that the effluent COD concentration would decrease by setting a deep water lake before the final outlet of the park.
出处
《环境工程》
CAS
CSCD
北大核心
2016年第10期56-59,共4页
Environmental Engineering
基金
水体污染控制与治理科技重大专项"城市内湖氮磷去除及富营养化控制技术研究"(2013ZX07310-001)
关键词
工业园区
人工湿地
有机污染物
迁移转化
industrial park
constructed wetland
organic pollutants
migration and transformation
