[Treatment of bromoamine acid wastewater by combined ALR-BAC process].
Combined ALR-BAC was used to treat bromoamine acid wastewater. The results showed that the ALR system could run steadily for over 1 months at the BAA concentration 650 mg x L(-1) after one-month acclimation, the decoloration rate of BAA was reached to about 90% within 12 h, and the removal rate of COD was about 50%, the precipitation performance of the suspended microorganism was good. When the influent bromoamine acid concentration was above 200 mg x L(-1), the decolorization products of BAA were easy to undergo auto-oxidation and the yellow intermediate products which were difficult to biodegrade were formed. The BAC process could inhibit the auto-oxidation of the decolorization products effectively, and the decolorization products could be biodegraded gradually. When there were no added sulphate, the concentrations of Br- and SO4(2-) were increased as the COD concentration reduced. Ultimately, the release rates of Br- and SO4(2-) were 72.2% and 66.9%, the COD removal efficiency was about 85.7%.
Zhang
Wei
W
Key Laboratory of Industrial Ecology and Environmental Engineering Ministry of Education, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China. zwzh83@163.com
Wang
Jing
J
Lü
Hong
H
Zhou
Ji-ti
JT
Jin
Ruo-fei
RF
D000880:Anthraquinones / Q000302:isolation & purification*; D001673:Biodegradation, Environmental; D019149:Bioreactors; D002606:Charcoal; D007220:Industrial Waste / Q000517:prevention & control; D009930:Organic Chemicals / Q000302:isolation & purification; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
D000880:Anthraquinones; D007220:Industrial Waste; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D002606:Charcoal; C087418:bromamine acid