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- W2366276179 abstract "In order to improve the hydraulic permeability and intensify denitrification of subsurface wastewater infiltration system,one apparatus was established in a pilot laboratory with the mediums of 55% cinder,25% soil and 20% grass carbon mixed completely.The apparatus was dosed 4 times daily with domestic wastewater at 10 cm·d-1.Operating conditions were changed in order to improve the removal efficiency of TN.The average removal efficiency of COD,NH+4-N and TN were 73.3%,98.2% and 20.1%,respectively,when outlet location was at normal position.The average removal efficiency of COD,NH+4-N and TN were 75.4%,79.1% and 26.9%,respectively,When outlet location was heightened 30 cm,the bottom of apparatus was submerged so that anaerobic environment was formed.The average removal efficiency of COD,NH+4-N and TN were 88.9%,88.5% and 55.7%,respectively,when the apparatus was conducted in glucose added in domestic wastewater.The results show that the removal of TN is not improved by adding grass carbon in apparatus;outlet location raising can increase TN removal efficiency from 20.1% to 26.9%,but the action is limited; the glucose added can increase TN removal efficiency from 26.9% to 55.7%,and TN concentration of effluent decreases from 22.8 mg·L-1 to 14.2 mg·L-1; at the same time,the removal of COD,NH+4-N is not affected.So the critical factor of the TN removal blocked is carbon absent." @default.
- W2366276179 created "2016-06-24" @default.
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- W2366276179 date "2010-01-01" @default.
- W2366276179 modified "2023-09-25" @default.
- W2366276179 title "Intensified Denitrification of Compound Mixed Subsurface Wastewater Infiltration System" @default.
- W2366276179 hasPublicationYear "2010" @default.
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