ZHAOJi,YANPeng,QINQing-dong,et al.Optimization of Sludge Solidification Ratio in Water Supply Plant Based on Response Surface Method[J].China Water & Wastewater,2023,39(7):63-68.
Optimization of Sludge Solidification Ratio in Water Supply Plant Based on Response Surface Method
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第7期
Page:
63-68
Column:
Date of publication:
2023-04-01
- Keywords:
- sludge from water supply plant; response surface method; curing agent; optimization of the composition; unconfined compressive strength
- Abstract:
- Lime, silicate cement and super absorbent resin were selected to solidify and recycle the sludge from a water supply plant. The solidifying parameters of the sludge from the water supply plant were initially selected based on single factor experiment. The experimental plan for composite curing agent was designed by response surface method, and the optimal composition of curing agent was determined by taking 7-day unconfined compressive strength as the response value. The curing agents influencing the unconfined compressive strength in descending order were as follows: lime, silicate cement and super absorbent resin. The interaction between lime and silicate cement was significant. The optimal proportions of lime, silicate cement and super absorbent resin were 47.43%, 13.11% and 0.45%, and the 7-day unconfined compressive strength of solidified sludge was 0.51 MPa. The predicted values of the unconfined compressive strength obtained by the response surface model were close to the measured values, indicating that the model was highly reliable. The experimental results can provide reference for practical engineering application.
Last Update:
2023-04-01