ZHANGLiang-chun,WENYu-kun,DENGJia-wei,et al.Research and Development of Precise Sludge Discharge Control System for Flocculation & Sedimentation in Waterworks[J].China Water & Wastewater,2023,39(22):98-104.
Research and Development of Precise Sludge Discharge Control System for Flocculation & Sedimentation in Waterworks
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第22期
Page:
98-104
Column:
Date of publication:
2023-11-17
- Keywords:
- horizontal tube flocculation sedimentation tank; sludge level detection sensor; sludge level tracking; control system
- Abstract:
- A multi-parameter precise sludge discharge control system was developed, aiming at the difficulty of precise sludge discharge control in a horizontal tube flocculation sedimentation tank. With the sludge level detection sensor, controller and actuator as the core of the system, parameters of the sedimentation process were optimized to develop a closed-loop control system and realize intelligent control of sludge discharge in sedimentation tank. The control system has been tested, analyzed and applied in the horizontal tube flocculation sedimentation tank of a reclaimed water project and achieved good sludge discharge effect. The effluent turbidity in sedimentation tank can be stabilized below 2.0 NTU for a long time. The water consumption can be saved by 47.4%, compared with the traditional sludge discharge method. And the monthly operation times of single sludge discharge valve were reduced by 29 times, which avoids sludge accumulation in the sedimentation tank, and has the advantages of improving effluent quality, saving energy and reducing manual operation.
Last Update:
2023-11-17