WANGQian,WUXue-song,LIWei,et al.Optimized Operation Strategy for Energy Saving and Consumption Reduction of Sludge Dewatering Process in Qinghe Ⅱ Reclaimed Water Plant of Beijing Drainage Group[J].China Water & Wastewater,2024,40(2):94-98.
Optimized Operation Strategy for Energy Saving and Consumption Reduction of Sludge Dewatering Process in Qinghe Ⅱ Reclaimed Water Plant of Beijing Drainage Group
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第2期
Page:
94-98
Column:
Date of publication:
2024-01-17
- Keywords:
- sludge treatment; sludge dewatering; energy saving and consumption reduction; thickener; pre-dehydrator; plate and frame filter press
- Abstract:
- Driven by the policy of “carbon peak and carbon neutrality”, in order to optimize the energy saving and emission reduction of dewatering process, the sludge treatment center of Qinghe Ⅱ reclaimed water plant of Beijing Drainage Group realized significantly reduction of unit power consumption in the dewatering area in 2022 by regulating the equipment treatment capacity, equipment operation quantity and unit hours in the three production areas of thickener, pre-dehydrator and plate and frame filter press. By increasing the sludge load of thickener and reducing the frequency of equipment start-up, the unit power consumption in this area decreased by 17.52 kW·h/tDS. By optimizing the start-up frequency of the pre-dehydrator and the operation of the screw conveyor, the unit power consumption in this area decreased by 3.48 kW·h/tDS. The unit power consumption in the plate and frame area decreased by 51.89 kW·h/tDS year on year by taking measures such as zoning operation, low frequency operation of low pressure sludge pump and no feed reflux operation. Through the above process control measures, the total unit power consumption in the dewatering area have decreased to 324.39 kW·h/tDS in 2022, 17.9% lower than that in 2021, and the power saving corresponds to about 1 440.09 t of CO2 emission reduction.
Last Update:
2024-01-17