Polymer (PE) and coagulant concentration
Polymers are often used in wastewater treatment processes to enhance removal of suspended solids and other contaminants.
For an optimnal dewatering process, it is key to have full knowledge of the PE concentration that is added to the process or that is still present.
Olpas PCM (Polymer Concentration Measurement) sensors are specifically designed for measuring concentrations of PE/Polymer flocculant in multiple doses for monitoring of the PE dissolution processes (from powder) as well as inline and online measurement of PE emulsion, PE dilution, and activation. Also for measuring residual PE in dewatering (in centrate or filtrate and other reject water); and for measurign very low doses of Polymers in effluent before the water goes into natural waters or towards another step in the
Challenges caused by polymers
Even though polymers play a crucial role in enhancing the efficiency of wastewater treatment processes, usage in treatment-processes also introduces challenges and issues:
Overdosing, which can result in the formation of larger, denser flocs that are difficult to settle or filter effectively
Foaming, which can interfere with clarifiers and filters
Economic reasons, caused by the high cost of polymers
Concerns for downstream processes, where the polymers have a negative impact on the process
Environmental concerns when polymers are released into nature
Monitoring polymers to mitigate issues
To mitigate potential problems, it's crucial to carefully monitor and control the dosage of polymers for the specific wastewater characteristics, and optimize the treatment process to minimize any adverse effects.
Regular testing, process optimization, and adherence to environmental regulations can help in managing these challenges.
Olpas has sensors available to monitor the watertreatment process, and sensors for monitoring residual polymers during different stages of the dewatering process, both in high concentration or low concentrations.
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