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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?

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

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

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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 how an official exam weights topics.

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