摘要
苯胺和间氯苯胺的BOD5/CODCr测定结果表明 ,随着溶质浓度的升高 ,其水溶液的生物降解性显著降低 .为使此类溶液能够进行生物处理 ,必须降低其浓度 .在考察有机溶剂和络合剂P2 0 4生物降解性的基础上 ,对苯胺和间氯苯胺稀溶液进行了溶剂萃取和络合萃取的研究 .对影响有机溶剂和络合溶剂萃取分配系数的因素进行了讨论 .萃残液的BOD5/CODCr值表明 ,选择合适的萃取剂进行萃取 ,其萃残液无需进一步稀释就可进行生物处理 ,论证了萃取置换法治理难降解有机废水的潜力 .
It was found that the biodegradability (indicated by BOD 5/COD Cr value of water solution containing anilire or chloroaniline declined with the increasing of their concentration.In order to bio treat such water,decrease of the solute's concentration was necessary. Based on the research of organic solvents' and complexing agent's biodegradability,a series of extraction experiments were conducted for aniline and m chloroaniline with complexing agent or physical solvent.The factors influencing the distribution ratio were discussed.The BOD 5/COD Cr value of raffinates showed that the raffinate can be treated by biological degradation without dilution if suitable solvent was choosed. It was proved that displacement by extraction had great potentiality for treating wastewater containing non biodegradable organic contaminant.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2001年第1期71-74,共4页
Environmental Science
基金
国家"九五"科技攻关项目!(96 90 9 0 5 0 1 0 3)
