Dongke Yu

Publication Date



This research characterizes different wastewater treatment plant effluent nitrogen species in

order to further understand the organic fraction of effluent nitrogen. Four effluents from

biological nutrient removal (BNR) treatment and conventional activated sludge (CAS) treatment

processes were investigated. Proteomic tools were applied in characterizing effluent protein. The

protein profiles show the presence of active enzymes in all effluents and the organic nitrogen in

the BNR effluent is more diverse than that in the CAS effluent, especially in the size range of 50-

75 kDa. Size fractionation of the effluents suggests that over 70% of the effluent protein is

soluble and most of the soluble proteins have a size smaller than 1kDa