Sludge evaporation and dehydration are divided into high-temperature drying and low-temperature drying. Low-temperature drying is the use of circulating hot air (about 70 degrees) to evaporate sludge moisture. Because the temperature is low, harmful substances do not decompose and cannot be volatilized, and the stability and safety of the equipment are greatly improved. The Xinkunyuan sludge drying machine uses the principle of low-temperature sludge drying to treat sewage...