Experimental study on aerobic biodegradation of phthalic acid esters in urban sewage

In order to evaluate phthalic acid esters environmental hormone´s detention in the environment, predict its biodegradability and properly solve the treatment of urban sludge ,we make a study on the aerobic biodegradation law of dibutyl phthalate (DBP), which has the highest concentration and pollution risk in the urban sludge. The result shows that the process of PAEs aerobic biodegradation can be best described by First-order kinetic model, and the rate of dibutyl phthalate degradation in aerobic granular sludge increases as dibutyl phthalate load increases. At various temperatures, there is some difference for the aerobic sludge in the degradation of phthalic acid esters. The high temperature would be more propitious for degradation.