1,4-丁炔二醇的厌氧降解性能评估  

Evaluation of the anaerobic biodegradability of 1,4-butynediol

作　　者：张鸿鹄 池勇志 辛宇 杨敏[2] 田哲[2,3] ZHANG Honghu;CHI Yongzhi;XIN Yu;Min YANG;TIAN Zhe(School of Environmental and Municipal Engineering,Tianjin Chengjian University,Tianjin 300384,China;National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery,Research Center for EcoEnvironmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;Shijiazhuang Saike Environmental Protection Research Institute,Shijiazhuang 050399,China)

机构地区：[1]天津城建大学环境与市政工程学院,天津300384 [2]中国科学院生态环境研究中心,工业废水无害化与资源化国家工程研究中心,北京100085 [3]石家庄赛科环保研究院,石家庄050399

出　　处：《环境工程学报》2024年第9期2463-2472,共10页Chinese Journal of Environmental Engineering

基　　金：国家自然科学面上基金资助项目(51978645);天津市科技计划项目(22YFXTHZ00080)。

摘　　要：该研究首先利用批次实验评估了1,4-丁炔二醇(1,4-butynediol,BYD)在三种厌氧生化条件下的降解效果,发现在单纯厌氧颗粒污泥体系中BYD的降解较慢,厌氧颗粒污泥与活性污泥复配及添加SO_(4)^(2−)都可以提高BYD降解速率。之后以模拟BYD废水为处理对象,以厌氧颗粒污泥与活性污泥复配污泥作为种泥,研究了UASB反应器长期连续运行条件下BYD在厌氧产甲烷体系和硫酸盐还原体系下的降解情况。发现在厌氧产甲烷体系中BYD去除效果不佳,并且高浓度BYD(2980 mg·L^(−1))会络合微量金属元素,导致产甲烷古菌活性降低,长期运行会导致挥发性脂肪酸累积,通过补加微量元素可以恢复产甲烷菌活性。通过增加SO_(4)^(2−)浓度降低进水COD/SO_(4)^(2−)可以促进硫酸盐还原成为主导厌氧代谢途径,在进水COD/SO_(4)^(2−)(质量比)为1,硫酸盐浓度为10000 mg·L^(−1)时,BYD的去除率可提高至21.92%,硫酸盐还原菌Desulfovibrio和Desulforhabdus成为优势菌属,但此时高浓度游离硫化氢同时抑制了产甲烷古菌和硫酸盐还原菌,使得厌氧体系挥发性脂肪酸再度大量累积,即使停止进水,硫化氢的抑制在短时间内难以恢复。本研究表明BYD为一种厌氧难生物降解有机物,硫酸盐还原作用可以促进其降解,研究结果可为含BYD废水的处理工艺设计提供指导。This study evaluated the degradation efficiency of 1,4-butynediol(BYD)under three types of anaerobic biochemical conditions through batch experiments.The results showed that direct BYD degradation was relatively slow by anaerobic granular sludge with BYD as a solo carbon source,whereas the combination of activated sludge and anaerobic granular sludge,as well as sulfate(SO_(4)^(2−))augmentation,could enhance the degradation of BYD.Thereafter,the simulated BYD wastewater was taken as treatment object,anaerobic granular sludge combined with activated sludge was taken as seed sludge,The long-term running of UASB reactors was performed.The BYD degradation was studied under anaerobic methanogenic metabolism condition and sulfate reduction condition,respectively.The result showed that the removal of BYD under anaerobic methanogenic metabolism condition was not good,and the complexation reaction could occur between BYD with high concentration(2980 mg·L^(−1))and trace metal elements,which led to the decrease of the methanogenic archaea activity and accumulation of volatile fatty acids after long-term running.The methanogenic archaea activity could be recovered through supplementary addition of trace metal elements.The increase of SO_(4)^(2−)concentration and decrease of COD/SO_(4)^(2−)ratio in influent could result in sulfate reduction dominating the anaerobic metabolic pathway.At the influent COD/SO_(4)^(2−)ratio of 1(m/m,SO_(4)^(2−)concentration of 10000 mg·L^(−1)),the degradation of BYD increased to 21.92%,and sulfate reducing bacteria Desulfovibrio and Desulforhabdus became the dominant genera in UASB.At this time,the free hydrogen sulfide with high concentration inhibited the methanogenic archaea and sulfate reduction bacteria,causing the high accumulation of volatile fatty acid in anaerobic system occurred again.Even though the influent was stop,the inhibiting results by free hydrogen sulfide was difficult to recover in a short period of time.This study indicated that sulfate reduction can promote th

关 键 词：1 4-丁炔二醇 厌氧生物降解 厌氧产甲烷代谢 厌氧硫酸盐还原 游离硫化氢 

分 类 号：X703[环境科学与工程—环境工程]