Try independently

Solve It Your Way

A plant treats 2 MGD at a chemical dose of 4 mg/L. Product purity is 100%. What is the feed rate in lb/day?

Choose one answer

8 lb/day66.72 lb/day0.24 lb/day667.2 lb/day

Optional Help

What is the question asking for?
Find the chemical-product feed rate in pounds per day.

Family source boundary

Curated values teach governed arithmetic relationships only. They are not chemical selections, dose targets, authorized pump settings, product recommendations, handling procedures, permit requirements, certification weighting, or plant-specific operating guidance.

This Draft family uses selected mathematical facts only. It does not reproduce an official formula sheet or claim Washington exam weighting.

Printed page 2 of 10, Feed Rate, lb/day: (Dosage, mg/L × Flow, MGD × 8.34 lb/gal) ÷ Purity expressed as a decimal
Printed page 2 of 10, Chemical Feed Pump Setting, % Stroke: Desired Flow ÷ Maximum Flow × 100%
Printed page 2 of 10, Chemical Feed Pump Setting, mL/min: Flow, MGD × Dose, mg/L × 3.785 L/gal × 1,000,000 gal/MG divided by feed-chemical density, active-chemical decimal, and 1,440 min/day
Printed page 8 of 10, Abbreviations: gal, L, lb, MG, MGD, mg, min, and mL