Nonionic Polyacrylamide NPAM Low-Charge Chemical Wastewater Clarification 0.05% Maximum Residual Monomer 25kg PE Bag

Product overview

Chemical manufacturing wastewater can contain precipitated minerals, organic particles, colloids and dissolved substances in widely varying combinations. Identifying the suspended fraction and its formation conditions is essential before selecting a flocculant. A clear-looking sample can still contain dissolved contaminants that do not respond to particle separation.

NPAM can be evaluated where particle bridging with limited ionic contribution is appropriate, often after a suitable reaction or coagulation stage. Its selection should follow the wastewater chemistry and separation requirement. Low charge does not imply chemical inertness or universal compatibility with solvents, oxidants or concentrated process chemicals.

Product benefits

Technical data

Application process

Identify the contaminants and the treatment reaction that creates separable solids. Complete the relevant reaction and establish pH before polymer screening. Prepare NPAM separately, dose it into the particle-bearing water and compare floc growth and separation. Evaluate the selected condition with the actual separator and the expected variability of the chemical production stream.

Grade and dosage selection

Record pH, conductivity, suspended solids, coagulants and any reactive substances that may affect polymer compatibility. Compare NPAM with suitable anionic or cationic grades rather than assuming low charge is always preferable. The residual monomer specification is a quality parameter and does not rank clarification efficiency or prove the absence of all treatment residuals.

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