YUJia-qing,ZHANGLi-li,WUDan-dan,et al.Engineering Practice and Operation Costs Analysis of Sludge Low-temperature Drying Process[J].China Water & Wastewater,2025,41(6):102-108.
Engineering Practice and Operation Costs Analysis of Sludge Low-temperature Drying Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第6期
Page:
102-108
Column:
Date of publication:
2025-03-17
- Keywords:
- sludge low?temperature drying; centrifugal dehydration; operating cost; transportation disposal; electricity consumption; photocatalytic oxidation; plasma deodorization
- Abstract:
- The sludge treatment process of centrifugal dehydration and low-temperature drying is used in a sewage treatment plant in Hangzhou. The operation status and existing problems of the low-temperature drying process were summarized and analyzed. The weight of the dried sludge was reduced by 67.8%, which improved the stability of sludge transportation and disposal. However, there were also problems such as insufficient capacity during the peak period of sludge production and odor treatment. In the sludge drying operation cost, electricity, transportation, disposal, operation and maintenance, deodorization cost accounted for 47.07%, 14.01%, 25.47%, 11.08% and 2.37%, respectively. The unit price of 340 yuan/t of sludge transportation and disposal is the price balance point of the two operation models, including wet sludge transportation and dried sludge transportation. On analysis of economy and operational stability, the wet sludge disposal mode was adopted at this stage.
Last Update:
2025-03-17