Research and Application of Water Quality Biological Toxicity Sensor Based on Automatic Online Repair Biofilm
The use of electrochemically active biofilms to determine biological toxicity of water quality has the advantages of high sensitivity,fast response speed,and no interference from water color and turbidity.At present,commercial biological toxicity of water quality monitoring equipment has achieved online monitoring,but the strains in MES are prone to aging and difficult to quickly recover after encountering water quality toxicity impacts,which need personnel to go to the site for maintenance or even replacement.It not only incurs high costs but also makes it easy for sensors to not recover and lose test data,which cannot meet long-term online monitoring needs.Therefore,the development of biological toxicity of water quality sensor based on automatic online repair biofilm is carried out,and the design points are elaborated from four aspects of MES configuration design,MES startup,and MES online automatic repair scheme.And the two built prototypes have been applied to the automatic online monitoring station for surface water,running stably for more than 6 months.The operational data indicates the feasibility of the scheme.
electrochemically active biofilmbiological toxicity of water qualityautomatic repairmicrobial electrochemical sensor
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