ZHUYou-fa,DENGLong,LIUWei,et al.Analysis on Closed Gas Circulating Sludge Thermal Drying Technology[J].China Water & Wastewater,2023,39(3):100-103.
Analysis on Closed Gas Circulating Sludge Thermal Drying Technology
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第3期
Page:
100-103
Column:
Date of publication:
2023-02-01
- Keywords:
- sludge; closed type; low-temperature thermal drying; moisture content; dehydration per unit energy consumption
- Abstract:
- A closed sludge thermal drying device was designed to solve the problems of high sludge moisture content and low drying efficiency. The sludge with moisture content of 55%-64% was dried for a month. Firstly, the sludge was sampled and its parameters were analyzed. On this basis, the main parameters were tested, including moisture content of wet sludge, moisture content of dry sludge, total amount of wet and dry sludge in and out, dehydration per unit energy consumption, total amount of condensate and condensate composition. The average moisture content of wet sludge after plate and frame pressure filtration was 63.26%, while the average moisture content of sludge after low-temperature drying reached 27.06%, and only 298 kW·h of electricity was consumed to remove 1 m3 of water. The device can effectively reduce the volume of sludge and the operational cost of sludge disposal.
Last Update:
2023-02-01