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Wastewater treatment tips, study guides, and exam prep strategies.

Biological Nutrient Removal: Complete Guide for Operators

Learn how biological nutrient removal works, from nitrification to EBPR. Covers BNR configs, control parameters, and exam traps.

Master the hydraulic loading rate formula for trickling filters with worked examples, HLR ranges, and tips to avoid exam traps.

Master the weir overflow rate formula with step-by-step worked examples and exam tips to avoid confusing it with surface overflow rate.

Learn how to calculate total dynamic head (TDH) for wastewater pumps. Step-by-step formula, worked example, and common exam traps.

Master the SRT formula for wastewater with step-by-step MCRT calculation examples. Same concept, three names - clear it up before exam day.

Master the BOD removal efficiency formula with step-by-step examples, common exam traps, and tips to nail percent removal calculations.

Master the sludge volume index formula with step-by-step examples. Learn SVI calculation, interpretation ranges, and common exam traps.

Step-by-step guide to becoming a wastewater operator, covering education, certification, salary, and realistic timelines for career changers.

Honest comparison of the best wastewater exam prep tools - pricing, features, pros, and cons so you can pick what actually works.

Master the pounds formula (lbs = concentration × flow × 8.34) with worked examples, unit tips, and common exam traps.

Master the chlorine dosage formula (Dose = Demand + Residual) with worked examples and exam tips for wastewater operator certification.

Master the detention time calculation with worked examples, unit conversions, and exam tips. HRT formula made simple for your certification exam.