铁炭微电解与微生物共作用预处理酚醛废水  

Pretreatment of phenolic wastewater by iron-carbon microelectrolysis with microorganisms

作　　者：潘小芳[1] 宁静 吕楠 李俊杰 周铭典 王汝明 李彦霖 朱葛夫[1] PAN Xiaofang;NING Jing;LYU Nan;LI Junjie;ZHOU Mingdian;WANG Ruming;LI Yanlin;ZHU Gefu(Key Laboratory of Urban Pollutant Conversion,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院城市环境研究所,中国科学院城市污染物转化重点实验室,厦门361021 [2]中国科学院大学,北京100049

出　　处：《环境工程学报》2021年第3期867-876,共10页Chinese Journal of Environmental Engineering

基　　金：国家重点研发计划项目(2018YFD0500202-04);国家自然科学基金资助项目(21477122,51678553,51808525,21876167);厦门市科技计划项目(3502Z20182003);厦门市水环境安全与水质保障工程技术研究中心创新基金项目(WES&WQGE201901);中国科学院战略重点研究项目(XDA23030301)。

摘　　要：通过构建铁炭微电解与微生物共作用预处理体系,以处理酚醛废水。分别考察了体系中COD、苯酚和甲醛的去除率。结果表明:相较于单独的铁炭微电解或微生物处理体系,铁炭微电解与微生物的协同作用促进了苯酚和甲醛的降解,铁碳填料最佳投加量为1400 g·L^(−1),污泥最佳接种量为10%;当进水COD为12000 mg·L^(−1)、苯酚为1676 mg·L^(−1)、甲醛为370 mg·L^(−1)时(原水5倍稀释),系统中COD、苯酚和甲醛的去除率分别为39.75%、64.46%和84.07%左右,为后续进行厌氧反应提供了有利的条件。此外,厌氧实验结果表明,厌氧生物处理对高浓度的苯酚降解作用有限。以上研究结果可为开发高效低成本的酚醛废水预处理工艺提供参考。Pretreatment system of iron-carbon micro-electrolysis coupled with microorganisms was constructed to treat phenolic wastewater in this study,and the degradation rates of COD,phenol and formaldehyde were investigated.Results showed that the system of iron-carbon micro-electrolysis coupled with microorganisms had higher removal rates of phenol and formaldehyde than iron-carbon micro-electrolysis system or biological treatment system alone.The optimal dosage of iron carbon filler and sludge inoculation were 1400 g·L^(−1) and 10%,respectively.The results also showed that the concentrations of inlet COD,phenol and formaldehyde of 12000,1676 and 370 mg·L^(−1)(5 times-dilution of the original water)were the appropriate inlet load for pretreatment,and their removal rates reached 39.75%,64.46%and 84.07%,respectively,which provided the favorable conditions for the subsequent anaerobic treatment.In addition,anaerobic biological treatment had limit effect on the degradation of phenol.In this study,a new technology was proposed to the development of pretreatment process of phenolic resin production wastewater with high efficiency and low cost.

关 键 词：铁炭微电解 微生物 酚醛废水 预处理 

分 类 号：X172[环境科学与工程—环境科学]