本文
No.6（2003）18.The control of the nitrogen removal from wastewater by UV irradiation and amid sulfuric acid addition method
Yukio KOSAKA, Shigeru NAGASHIMA and Akira HASEGAWA
The focus of the study was the control of wastewater treatment which was the removal method of nitrate-ion in the industrial wastewater. The UV irradiation of the wastewater reduced the nitrate-ion to nitrite-ion, and addition of amide sulfuric acid eliminated the nitrate- ion as nitrogen. By continuous UV irradiation reactor method, the reduction time of nitrate-ion more consumed than the time by batch UV irradiation reactor method. The concentration of nitrate-ion in wastewater was little effected to the reduction of the nitrate-ion up to 540mg/L. The concentration of nitrite-ion in the wastewater was little effected to the reduction of nitrite-ion up to 1000mg/L. By use of nitrate-ion electrode as the detector, the addition of amide sulfuric acid could be controlled.
Keywords
Wastewater, Nitrogen, UV irradiation, Nitrate-ion electrode
