Polyelectrolyte

Yes, polyelectrolytes are sometimes used as coagulants for water treatment.

For your SPECIFIC case, you should consult with your supplier regarding the SPECIFIC poly that you are using and the likely problems that unreacted poly might create.

There are many different poly mixes depending on the material to be coagulated. (Our potable water treatment blend is designed to match the algae/coloid nature of our feedwater while our effluent treatment plants use a totally different blend.)

Also, the poly is not cheap.

Careful control over reaction time, mixing, temperatures, contamination levels and so on are essential. (Though most modern plants have feedback techniques to monitor the poly levels, maintain at minimum and add when the coagulant material becomes too "thin". This strategy means that minimum quantities are used and unreacted poly is not released.)

Hi Engineer

Thank you for your reply

Is there any techniques to find the unreacted poly in water. I am mechanical in discipline. So I can't understand the details provided in internet.

Thanks in advance

As #1, talk to the supplier and obtain one that is safe for use on potable water.

Polyelectrolytes are flocculants. They help bind the sludge together.

Sorry for delay, been off line for a week.

Contact the supplier for specific details relating to your poly. (The net is great for general searching, but SPECIFIC DETAIL from the suipplier is necessary in this case.)