We have solved this problem ...
Published by Terry Scheurman, President at Applied Specialties, Inc.
We have solved this problem before this. The polymer that is causing your complications is an anionic. It is common for the textile industry to have this. It is also somewhat resistant to a waste activated sludge system since the polymer is slow to be digested. The City of Dalton, GA is a perfect example.
We had created a product that will react with this material and drop it from solution. We also have an on-line monitor that will test for the concentration of the anionic and feed the precipitant based on the incoming load. You can always base feed the precipitant but that will increase costs when the incoming polymer is low.
Using conventional ferric or aluminum coagulants doesn't work very well because the polymer disperses them and will carry them thru to the Ultrafiltration equipment making a bad situation worse.
Bleach, Chlorine dioxide and other oxidants are useless since the polymer is rather stable to oxidation. Hope this helps.
2 Comments
The process is simple. You run a polyacrylate test. We supply a pretty simple test to do this. All that is needed is a colorimeter. Hach, LaMotte, B&L, Pyxis or any other manufacturer. Our test will have 2 separate reagents.
Once you know the concentration, that will determine the dose of the coagulant. The coagulant is then fed to the influent stream to knock out the polymer. The best way to feed the product is with a peristaltic pump paced from a flow meter. The Watson Marlow Q-Dos pumps are the easiest and best to use for this (in my opinion). The pump feeds the coagulant based on wastewater flow. You will need approximately 30 seconds for the reaction to complete. 2 minutes is ideal.
The treated water may be sent to a DE filter before going to your UF or you could send it directly to the UF as you currently have things configured. I prefer the DE pre-filter to decrease the overall load on the UF.
If you have a clarifier in your system, you may eliminate the DE filter.
You may send me a line drawing of your WWTP and I can mark it up for you.
email: Scheurman.terry@appliedspecialties.com
Published by Terry Scheurman, President at Applied Specialties, Inc.
1 Comment
Emailed you but its came back with error
Published by Fawad Ahmed Akhtar, Wastewater Treatment & Reclaim Incharge at Feroze 1888 Mills
Can u please qoute me the solution exactly
Published by Fawad Ahmed Akhtar, Wastewater Treatment & Reclaim Incharge at Feroze 1888 Mills