科研之友
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摘要
Physical online sensors are widely used in wastewater treatment plants. The high costs of acquisition and maintenance as well as the delayed response due to long hydraulic retention times, applications of some physical online sensors are limited. Consequently, studies on developing software sensors have been drawn much attentions these years. Aiming to predict treatment results after water is coagulated, and this paper focuses on developing a software sensor of outlet turbidity for coagulation process. Solution to address the potential non-plug flow conditions in sedimentation tanks is discussed. Model validation results show that the proposed software sensor has 86% of accuracy within the main working range. This paper expresses a novel concept that what the proposed software sensor predicted has been not formed in the coagulation process. Since the software sensor enables to know the treatment results without waiting for long hydraulic retention time of sedimentation tank, it not only shortens the response time of manual dosing control but also serves as a feedback parameter to define optimal dosage for coagulant dosing control systems.
- 出版日期2017-8
