Comparative Research on Oven Drying and Microwave Drying of Municipal Sludge

The paper mainly targets at investigating municipal sludge drying technology which is efficient and economical. Use the oven, the microwave and the combination of both to study on the factors of the drying efficiency. The research found that the thinner sludge is easier to be dried, additionally, combining these two ways, which means to dry the sludge with dry box for a short time and then use the microwave to dry the sludge can greatly improve the drying efficiency. The research conclusions will provide a scientific basis for municipal sludge drying and semi-drying engineering practice, with some guiding significance.