The Removal Performance and Biodegradation Pathway of Aniline and Naphthalene under Anaerobic Conditions in Coking-plant Wastewater

The degradation and removal of aromatic hydrocarbon aniline,naphthalene and indene in the coking plant wastewater under anaerobic conditions were studied by constant temperature flask-shaking tests in the lab.The concentration of aniline,naphthalene and indene in supernatant,sludge under the anaerobic conditions was analyzed.The results indicate that aniline was mainly removed through biodegradation,however,the microorganism will need some time to adjust to its new environment.The removal path of naphthalene and indene was Absorption-degradation,naphthalene can be biodegraded in 48 h,and the Absorption of indene on the sludge was a physical one.It was reversible.