Water Treatment Process Steps Explained (with Chemicals)
The water treatment process is a staged sequence — intake screening, coagulation, flocculation, clarification, filtration, disinfection and chemical conditioning — that progressively removes solids, color, hardness and microorganisms. This guide explains each step and its chemicals.
Step-by-step
- 1. Screening & intake — removes large debris.
- 2. Coagulation — PAC / alum destabilizes colloids.
- 3. Flocculation — PAM grows flocs.
- 4. Clarification & sedimentation — flocs settle.
- 5. Filtration — removes residual turbidity.
- 6. Disinfection — TCCA / SDIC.
- 7. Conditioning — antiscalants & corrosion inhibitors for downstream loops.
Conditioning for industrial loops
Once clarified, water feeding cooling towers, boilers or RO membranes is conditioned with scale inhibitors (PBTC, HEDP) and corrosion inhibitors.
Frequently asked questions
What is the first step in water treatment?
Screening and intake to remove large debris, followed by coagulation.
What chemical is added during coagulation?
An inorganic coagulant such as PAC, poly ferric sulphate or aluminium sulphate.
About the manufacturer
VCYCLETECH is a China-based manufacturer of water treatment chemicals — antiscalants, scale & corrosion inhibitors, coagulants, flocculants, biocides, dispersants and paper chemicals — ISO 9001 / 14001 / 45001 certified, with a COA on every batch and OEM/ODM service. See our quality & certifications.
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