F^-对厌氧颗粒污泥的产甲烷毒性及降解性能的影响  

Effects of fluoride-containing effluents on methane production and biodegradation of anaerobic granular sludge

作　　者：徐丽丽[1] 赵芝清[1,2] 沈晓莉[2] 方苗苗[2] 竺立[3] 傅柳松[1] 

机构地区：[1]浙江大学环境与资源学院,浙江杭州310058 [2]衢州学院化学与材料学院,浙江衢州324000 [3]浙江科技学院,浙江杭州310023

出　　处：《浙江大学学报（农业与生命科学版）》2012年第6期741-746,共6页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：浙江省衢州市科技资助项目(20091049)

摘　　要：采用厌氧毒性试验(anaerobic toxicity assay,ATA)研究F对厌氧颗粒污泥的产甲烷毒性.结果表明:当F质量浓度为25 mg/L时,产甲烷过程几乎不受影响;当F质量浓度由25 mg/L上升至100 mg/L时,产甲烷量由96 mL降至64 mL;当F质量浓度由100 mg/L上升至400 mg/L时,产甲烷量仅由64 mL降至60 mL.随之2次连续投加F的试验结果表明:当F质量浓度为25 mg/L时,甲烷化过程仍然保持与对照相当的活性;当F质量浓度为100~400 mg/L时,甲烷化过程则受到了更为严重的抑制.恢复试验结果表明:当F质量浓度为25和100~400 mg/L时,F分别属于代谢毒素和生理毒素.此外,蔗糖基质的降解性随着F质量浓度的增加而降低.Fluoride is major raw material of chemical industry and is also the main pernicious composition in industrial wastewater, which leads to serious environmental pollution. Anaerobic biological treatment technology is a kind of low cost wastewater treatment technology which combines wastewater treatment with energy recovery. The prospects for the anaerobic wastewater treatment are extremely promising. However, the bioactivity of anaerobic microorganism, especially the methanogens can be hampered seriously by toxic and harmful substances, such as nitrophenol positional isomers, PCP （pentachlorophenol）, polycyclic aromatic hydrocarbon, fluoride-containing effluents, etc. Furthermore, the vailable information about the effects of fluoride-containing effluents on the methane production and biodegradation process of anaerobic microbe in biological wastewater treatment is very limited at present. The purpose of this study is to evaluate the inhibitory effect of fluoride against the main microbial populations expressing in the methanogenic activity and the recovery of the biological activity. To attain this goal, a short-term batch anaerobic toxicity test （ATA） was conducted. The batch test was consisted of five parts, namely, the first, the second and the third anaerobic toxicity assay, as well as the first and the second anaerobic resuming assay, respectively. The results indicated that the inhibitory effects of the low fluoride concentration of 25 mg/L against the activity of methanogenic bacteria were a bit slight. The inhibitory impact was recorded severe when the concentration of fluoride rose from 25 mg/L to 100 mg/L, dropping the methane production from 96 mL to 64 mL. However, the effect was not very obvious at the range of fluoride concentrations from 100 mg/Lto 400 mg/L; as a result, the methane production reduced from 64 mL to 60 mL （Fig. 1A）. The inhibitory effects were enhanced during the subsequent addition of fluoride （Fig. 1B, C）. The methanogenic activity recovery type was dependent on th

关 键 词：F- 厌氧颗粒污泥 产甲烷毒性 基质降解性 

分 类 号：X17[环境科学与工程—环境科学]