Research on Water Pollution Control of the Overflow Outlet Based on Ecological Filtration Technology
For the full use of the good biodegradability characteristics of the water from overflow port sewage,an ecological filter dam device based on ecological filtration technology with the habit of low impact development and low energy consumption was designed and in-situ purification experiments were conducted at an overflow outlet.The experiment results showed that the key indicators of effluent quality were close to the first class standard of GB 18918"Pollutant Discharge Standard for Urban Sewage Treatment Plants"and could be discharged into the third class functional water area according to the standard of GB 3838"Surface Water Environmental Quality Standard"after treatment by the ecological filter dam device.The removal rate of COD and SS at the overflow outlet could reach 80％,the removal rate of TN and NH3-N was greater than 70％and the removal rate of TP can also reach 65％,which shows a significant purification effect in the whole.The ecological filtration technology could prevent the water pollution from the source and alleviate the eutrophication of overflow water.
ecological filtration technologyoverflow outletwater pollution controlin-situ purification test
NETL
NSTL
万方数据
