RESEARCH ON THE MIGRATION AND TRANSFORMATION OF ORGANIC POLLUTANTS IN THE CONSTRUCTED WETLAND PARK
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.
industrial parkconstructed wetlandorganic pollutantsmigration and transformation
NETL
NSTL
万方数据
维普
