SO_4^(2-)对厌氧折流板反应器中颗粒污泥性能的影响  

The effect of SO_4^(2-) on the performance of ABR anaerobic granular sludge

作　　者：周兴求[1] 伍健东[1] 阮君[1] 

机构地区：[1]华南理工大学环境科学与工程学院,广州510006

出　　处：《安全与环境学报》2008年第3期74-77,共4页Journal of Safety and Environment

摘　　要：利用取自厌氧折流板反应器中的颗粒污泥,通过间歇试验,研究不同质量浓度的SO42-对厌氧颗粒污泥性能的影响。结果表明,SO24-对厌氧颗粒污泥性能的影响具有多重性,当SO24-质量浓度≤3000mg/L时,SO24-对颗粒污泥的厌氧生物降解过程有促进作用;当SO24-质量浓度>3000mg/L时,SO24-对颗粒污泥的厌氧生物降解过程有抑制作用,且抑制作用随SO42-质量浓度的提高而迅速增大。当颗粒污泥有机负荷为4kgCOD/(m3.d)、COD与SO24-质量浓度比为2.7～4、SO42-质量浓度为2000～3000mg/L时,ABR反应器运行效果最佳,此时系统COD去除率和出水碱度分别稳定在85%和2500mg/L以上;出水挥发酸(VFA)在200mg/L以下;污泥比产甲烷活性(SMA)最高;SO24-的去除效果最佳。本研究为用厌氧生物处理高浓度硫酸盐废水提供必要依据。The present paper has engaged in an investigation of the effects of various sulphate （SO4^2- ） mass concentrations on the performance of anaerobic granular sludge in a batch-experimental way. For this purpose, we have done a series of intermittent experiments taking glucose as the carbon content, NH4Cl as that of nitrogen and KH2PO4 as that of phosphor so as to gain the microorganisms of SO4^2- from the sodium sulfate. The results of our intermittent experiments prove that SO4^2- mass concentrations are expected to have both positive and negative effects on the performance of the anaerobic granular sludge. For example, when SO4^2- mass concentrations were lower than 3 000 mg/L, with the mass concentration ratio of COD and SO4^2- （co（COD）/ co （SO4^2-）） being more than 2.7, the concentration of the sulphate seems to have no effect on the effluent volatile fatty acid （VFA）. Moreover, the systematic alkalinity and the methanogenic activity of the anaerobic granular sludge tends to get enhanced with the increase of SO4^2- mass concentrations. Further proofs also indicate that, when SO4^2- mass concentration was higher than 3 000 mg/L while ω（COD）/ω（SO4^2- ） was less than 2.7, the system would be badly effected. Our intermittent experiments have also shown that the increase of the effluent VFA tends to inhibit the specific methanogenic activity of the sludge, particularly, with the increase of the SO4^2- mass concentration. Nevertheless, when the organic loading rate of granular sludge was 4 kg COD· m^-3· d^-1, that of co （COD）/ ω（SO4^2- ） was equal to 2.7 -4 with the mass concentration of SO4^2- being 2 000 -3 000 mg· L^- 1, the system would be likely to enter into the best operative state, with the removing rate of the organic compound becoming stabled over 85 % . Besides, the effluent alkalinity was over 2 500 mg · L^- 1 and the effluent VFA was lower than 200 mg·L^- 1, the methanogenic activity of the sludge might be expected to reach the maximum, at the same time, the re

关 键 词：水污染防治工程 厌氧颗粒污泥 SO4^2- 产甲烷菌(MPB) 硫酸盐还原菌(SRB) 

分 类 号：X703.1[环境科学与工程—环境工程]