Reviewed
Flocculant Dose Calculator: Convert mg/L to kg/Day and Pump Rate
Convert a documented commercial-product dose into product mass and prepared-solution pump flow. The calculator performs unit conversion; it does not select a suitable treatment dose.
Enter the operating basis
Check the conversion
Commercial product use (kg/hour) = treated flow (m³/hour) × commercial-product dose (mg/L) ÷ 1,000. Daily use equals that hourly mass multiplied by the operating hours. Prepared-solution flow (L/hour) equals commercial product mass (kg/hour) × 1,000 divided by the solution concentration (g/L).
For the illustrative inputs above, 100 m³/hour at 2 mg/L requires 0.20 kg of commercial product per hour. Over 24 hours this is 4.80 kg/day. A solution containing 1 g of that commercial product per litre requires 200 L/hour of prepared solution. These inputs demonstrate arithmetic, not a recommended dose, preparation concentration or pump selection.
Do not mix active and commercial bases
If a trial result is expressed as active polymer, first establish the conversion to the supplied product using the applicable declared content. Likewise, a percentage by mass is not automatically the same as grams per litre; density and the definition of the concentration matter. Confirm the preparation basis with Xinqi Polymer for the named grade rather than inferring it from a broad polyacrylamide supply description.
Verify against the actual pump
The calculated flow is a target volume of prepared solution, not a pump-speed setting. Use the pump calibration guide to connect actual delivery to the equipment setting. Check operating range, dilution and product-specific preparation instructions before implementing a change.
For intermittent treatment, enter the actual operating hours rather than assuming continuous operation. Keep unplanned preparation losses and commissioning quantities separate when estimating an order. Review the first-order plan for a portable treatment skid if the calculation is being used to arrange a trial supply.