How to Learn From This Workbook

• Read the handbook chapter before the module.

• Show the formula and units for every calculation.

• Record facts before opinions during troubleshooting.

• Use real instruments during field exercises whenever possible.

• Have a trainer observe practical tasks.

• Correct errors in a different color or with dated notes.

• Use the answer sheets only after you finish the work.

Three training levels

Level 1 - Technician Essentials: routine terms, measurements, and service tasks.Level 2 - System Design and Diagnosis: sizing, selection, commissioning, and common faults.Level 3 - Advanced Professional: commercial, industrial, membrane, high-purity, and root-cause work.

Dual-Unit Standard

U.S. customary units are shown first. SI units follow in parentheses. Always include the unit in your answer.

Rounding rule

Use enough digits to support the decision. For normal field work, two or three significant figures are usually enough. Do not report more precision than the instrument or source data can support.

Core Calculation Setup

Use this five-step method on every calculation:

1. Write what is known.

2. Write what must be found.

3. Choose the formula.

4. Substitute values with units.

5. Check whether the answer is reasonable.

Example

A system flows 10 gpm. Convert to L/min.10 gpm x 3.785 L/min per gpm = 37.85 L/min.Rounded answer: 37.9 L/min.

Treatment-Train Worksheet Method

1. Define the objective

Write measurable product-water goals and operating needs.

2. Document the feed

Source, analysis, flow, pressure, temperature, variability, and biological risk.

3. Select by mechanism

Choose processes that actually remove, reduce, exchange, oxidize, disinfect, or separate the target.

4. Put stages in order

Protect sensitive stages and provide contact, filtration, storage, or polishing as needed.

5. Add controls

Sample points, gauges, meters, alarms, bypass, redundancy, drains, and acceptance criteria.