YANYing-ying,MANGao-zhi,HEZhi,et al.Enhanced Solar Drying of Sewage Sludge Using Mechanical Disturbance and Carbonaceous Skeleton Blending[J].China Water & Wastewater,2025,41(13):26-32.
Enhanced Solar Drying of Sewage Sludge Using Mechanical Disturbance and Carbonaceous Skeleton Blending
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第13期
Page:
26-32
Column:
Date of publication:
2025-07-01
- Abstract:
- In the process of sludge solar drying, serious shrinkage and crusting phenomenon are prone to occur, resulting in low drying efficiency. In this paper, the in-situ strengthening effects of mechanical disturbance and carbonaceous skeleton blending on the sludge solar drying process were explored in an actual solar canopy. The results showed that mechanical disturbance could alleviate the crusting effect and promote the release of internal water. The drying time was reduced by 49.3% with disturbance once per day. Carbonaceous skeleton blending could further improve the drying efficiency on the basis of mechanical disturbance, and the moisture content of sludge was reduced by up to 18.7%. Under the synergistic effect of mechanical disturbance and skeleton blending, the organic matter content at the end point of sludge drying was increased, with neutral pH value, which was conducive to the application of subsequent products.
Last Update:
2025-07-01