Research on the Law of Biochemical Degradation of Solidified Sludge Based on 3D Fractal Dimension

At present, landfill is the main way of sludge disposal in China. For the solidified sludge contains a lot of organic matter, the biochemical reaction will happen in the landfill, and the micro-structure of solidified sludge will has a great change. In order to reveal the law of biochemical degradation and the microscopic mechanism of solidified sludge, this paper designs organic matter biodegradation test under conditions of aerobic, anaerobic condition and leachate adding. Through 3D fractal dimension, it presents an obvious staggered characteristic of biodegradation of solidified sludge. It comes to the results that the biodegradation of solidified sludge is fastest and most thorough under leachate condition.