Removal of Ammonical Nitrogen by Advance Oxidation

Abstract

Ammonical Nitrogen plays an important role for many industrial wastes as it may hamper the secondary
biological system. It also produces many organic amines while reacting with them and plays a leading role for
Eutrophication.. One of the chemical units at Ankleshwar GIDC has proposed to take up treatability studies involving
various alternatives to reduce NH4-N in the secondary treated effluent of approximately 400 mg/l to less than 50 mg/l.
Here in our study, we have classified techniques in to three categories named 1) chemical treatments 2) Physical
Treatments and 3) Physico chemical Treatments. After thorough and extensive literature survey we have reached at
conclusion that Electrochemical Oxidation is prominent method among many we would like to apply for removal of NH4-
N on secondary outlet effluent. During overall treatability study we have applied two methods which are chemical
addition (Precipitation) and Electrochemical Oxidation to the effluent and then we have compared the results of both
methods and thus we concluded that by electrochemical oxidation we got reduction of NH4-N from 283 ppm to 3 ppm (99
%), Where as in chemical addition we have got reduction around 94 %.