Journal of Dalian Maritime University >
2017 , Vol. 43 >Issue 4: 122 - 127
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2017.04.018
Experimental study on denitrification from seawater by ultraviolet irradiation
Received date: 2017-05-27
Revised date: 2017-07-19
Online published: 2017-07-20
For improving the denitrification performance of electrolyzed seawater, UV irradiation was introduced to combine with electrolyzed seawater for denitrification. The effect of UV irradiation on denitrification efficiency was investigated based on a UV-bubbling photochemical reactor, and the possible reaction mechanism was discussed preliminarily. Firstly, some contrast experiments for different reaction systems were conducted. Results show that the combination of UV irradiation and electrolyzed seawater can enhance denitrification efficiency significantly. Furthermore, the effects of active chlorine concentration, solution pH value, UV irradiation intensity, and NO inlet concentration on denitrification efficiency of UV irradiated electrolyzed seawater were studied. Results show that denitrification efficiency increases with the increasing of active chlorine concentration in electrolyzed seawater and UV irradiation intensity. The initial pH value of the electrolyzed seawater has little effect on the denitrification performance of the UV irradiated electrolyzed seawater. The denitrification efficiency of the UV irradiated electrolyzed seawater decreases slightly when the NO inlet concentration increasing from 306 mg/m3 to 1534 mg/m3.
HAN Zhi-wei , HAN Zhi-tao , YANG Shao-long , ZHAO Dong-sheng , LIU Bo-jun , PAN Xin-xiang . Experimental study on denitrification from seawater by ultraviolet irradiation[J]. Journal of Dalian Maritime University, 2017 , 43(4) : 122 -127 . DOI: 10.16411/j.cnki.issn1006-7736.2017.04.018
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