Water treatment engineers need to master what knowledge?

Water treatment process, water quality analysis, a variety of analytical instruments, selection, use, installation, commissioning, sampling and measurement.

Piping Selection, maintenance, installation

Pressure analysis,

Water analysis,

Pumps, electric valves, control valves, solenoid valves

Filters, air compressors

Pressure vessels, stainless steel, carbon steel, pvc, ppr

Tee, short, pipe clamps, flanges, live knots, and other plumbing parts

Filter, activated carbon, agitator, dosing equipment, frequency pumps, etc.