微囊化生物流化床处理邻二氯苯废水
1,2-dichlorobenzene wasterwater treatment with microencapsulated biological fluidized bed
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摘要: 采用海藻酸钠—壳聚糖—活性炭(SA-CA-PAC)生物微胶囊包埋优势降解菌用于生物流化床处理邻二氯苯废水。比较了微囊化菌和悬浮菌对废水的降解效果,同时考察了初始浓度、接种量、pH值、温度和曝气量对降解率的影响。结果表明,微囊化菌比悬浮菌拥有更适宜的生长环境,具有更好的pH稳定性和热稳定性。微囊化菌的降解效果优于悬浮菌,处理150 mg/L的邻二氯苯废水的最佳接种量为10%,最适pH为7;5,最适温度为30℃。Abstract: A high performance biodegradation bacteria in degrading 1,2-dichlorobenzene was encapsulated in the alginate-chitosan-powder active-carbon(SA-CA-PAC) microcapsule to deal with wasterwater in fluidized bed. Microcapsuled bacteria was compared with suspended bacteria on the removal efficiency of 1,2-dichlorobenzene and the effects of initial concentration, inoculation quantity, pH and temperature and aeration rate on degradation were studied. The results showed that microcapsuled bacteria provides a more suitable growth environment, with better pH stability and thermal stability.The removal efficiency of microcapsuled bacteria was apparently superior to that of suspended bacteria, and the optimal conditions for degrading 1,2-dichlorobenzene was inoculation quantity of 10%, pH of 7.5,temperature of 30℃,and aeration rate of 120 L/h.
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Key words:
- microcapsule /
- 1,2-dichlorobenzene /
- fluidized bed
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