[Analysis and research on the degradation and migration of organic pollutants in textile wastewater treatment process by GC-MS].
In order to analyze the advantages/disadvantages of the combined treatment process between "physicochemical + biochemical" and "biochemical + physicochemical" in treatment of textile wastewater, gas chromatography-mass spectrometry (GC-MS) was used to determine the degradation process of organic pollutants in this two totally different treatment processes. The same analysis was also conducted to the sludge and discharged water. The results showed that the "physicochemical + biochemical" process displayed a poorer effect than "biochemical + physicochemical" in degrading the organic pollutants. The latter was 6.2% higher than the former in removing the organic pollutants averagely. The difference was mainly manifested in the efficiency of anaerobic hydrolysis in the two coupled processes. Moreover, the implement of "physicochemical + biochemical" process resulted in the migration of plenty of typical organic pollutants to sludge from primary coagulation sedimentation process and to the discharged water, which would cause secondary pollution easily.
Liu
Wei-jing
WJ
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China. wjliu99@yahoo.com.cn
Zhang
Long
L
Wu
Wei
W
Tu
Yong
Y
D001673:Biodegradation, Environmental; D019149:Bioreactors; D004396:Coloring Agents / Q000032:analysis / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D009930:Organic Chemicals / Q000032:analysis / Q000302:isolation & purification*; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*
D004396:Coloring Agents; D009930:Organic Chemicals