Treatment Trains for Water Reuse Systems
A treatment train is a sequence of treatment steps selected to match source water quality and reuse goals. Each step should have a purpose, and the full system should be practical to operate and maintain.
Common treatment steps
- Pretreatment for trash, grit, leaves, and sediment.
- Settling or storage to reduce solids.
- Filtration for turbidity and fine particles.
- Disinfection where human exposure is possible.
- Controls, alarms, and monitoring to verify performance.
Design principle
Start with the reuse application. Landscape irrigation, toilet flushing, cooling, washdown, and process water may have different reliability, treatment, monitoring, and backup supply needs.
Related resources
Planning a reuse or rainwater system?
Start with the reuse guide, then use calculators for tank sizing, drawdown, pump power, and storage planning.
