| 摘要 |
A process and system to dry wet sewage sludge with hot sand and to burn the dried sludge. The sand is heated in a sand heater by burning dried sludge, and the hot sand is transferred to a sludge dryer. Wet sludge is mixed with the hot sand in the sludge dryer and thereby moisture is driven off. The dried sludge and sand are separated, and the sand returned to a sand heater while the dried sludge is burned to heat the sand.
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