Study on Domestic Wastewater Treatment with Poplar Woodland
Four poplar varieties were selected as plant material for domestic wastewater treatment,and poplar woodland was used for domestic wastewater disposal sites.The results showed that the three poplar varieties include poplar 2001,107 and 72 were suited as wastewater plant material.The suitable hydraulic loading rates was from 600 to 900 m3/(hm-2· week)in slow rate system.Poplar 46 was not suitable for wastewater plant material.The poplar woodland area was determined and sedimentation tank was constructed according to wastewater discharge and disposal effectiveness of different poplar varieties.Then pretreatment of domestic wastewater was implemented.The hydraulic loading rates were adjusted according to the change of groundwater quality.The technique implement increased growth of poplar and understory plant,purified domestic wastewater.The technology was suitable to apply for villages and small towns which wastewater treatment works were not set up or wastewater volume was short of require setting up wastewater treatment works.