Cationic Polyacrylamide CPAM Powder for Denim Washing Wastewater Sludge Dewatering with 89% Minimum Solid Content in 25kg PE Bag

Product overview

Denim washing plants may produce sludge containing cotton lint, indigo-associated solids, mineral abrasion fines and biological material. Enzyme washing, stone washing and finishing operations can generate different sludge blends, so a grade selected during one production campaign should be checked when the washing process changes.

CPAM promotes aggregation of compatible fine particles into a structure that can retain solids while releasing water. The practical objective is reliable dewatering at the plant feed rate. Very large flocs are not always desirable if they break in the transfer line or hold water inside a loose structure.

Product benefits

Technical data

Application process

Screen coarse lint before sludge pumping where the process requires it. Characterize the thickened sludge, prepare CPAM in a separate make-up unit and introduce the matured solution before the conditioning zone. Test several doses at a consistent sludge concentration. Follow beaker or drainage screening with a machine trial that includes normal start-up and production fluctuations.

Grade and dosage selection

The 0.1–0.5% figure describes prepared solution concentration, not the dosage to the sludge. Determine feed rate from dry-solids loading, product demand and pumping capability. Compare charge levels where the balance of mineral fines and organic sludge varies. If flocs look stringy or filtrate becomes viscous, check overdosing and dilution before changing the machine settings.

Performance evaluation

Solution preparation

Prepare a 0.1–0.5% solution by mass using clean water. Add powder gradually to moving water to avoid lumps. Allow around one hour for dissolution, adjusting for grade, water quality and temperature. The TDS gives 200–400 rpm as a mixing reference; adapt mixing to the actual tank and impeller. Avoid unnecessary high shear after dissolution. A 0.1% solution contains 1 kg of product per 1,000 kg of final solution. Select the treatment dose separately through controlled trials.

Packaging storage and handling

Featured packaging is a 25 kg PE bag with an inner plastic liner. Store the dry product sealed at 0–35 °C, protected from moisture and direct sunlight. The stated shelf life is two years under specified storage conditions. Reseal opened packaging and follow the current SDS for handling and spill cleanup.

Frequently asked questions