Chlorination Plant Pumps (Disinfection & Chemical Feed)
Dose hypochlorite, chlorine dioxide precursors, and ammonia precisely—while transferring bulk chemicals safely to day tanks. We package diaphragm metering systems for dose control and mag‑drive sealless sets for closed‑loop transfer, with drum/IBC options where needed. Brands include LMI, Walchem, Neptune, Emec, Grundfos (SMART Digital, DMX/DMH), Finish Thompson, Iwaki, Flux and J.L. Wingert day‑tanks & accessories.
Best‑Fit Pumps for Chlorination Duty
| Task | Best Pump Type | Recommended Brands | Why It’s Best |
|---|---|---|---|
| Sodium hypochlorite dosing (off‑gassing) | Digital solenoid diaphragm with degassing head | LMI PD, Grundfos SMART Digital (DDA/DDE), Walchem EWN, Emec | High turndown, PVDF/PTFE wet ends, built‑in degassing—stable at low flows |
| High‑pressure / long run dosing | Motor‑driven or hydraulic diaphragm | Grundfos DMX/DMH, Neptune 500/600, LMI TD/SD | Handles back‑pressure; API‑style accessories; steady output |
| Chloramine (ammonia) feed | Diaphragm metering (chemical‑compatible head) | LMI PD/TD, Walchem EWN, Grundfos DMX | Accurate ratio control to residual; easy PLC/BACnet integration |
| Bulk bleach transfer → day tank (closed) | Mag‑drive sealless centrifugal (PP/PVDF/ETFE) | Finish Thompson DB/UC, Iwaki MX/MD | No mechanical seal → minimal emissions; reliable on oxidants |
| Drum/IBC chemical feed | Drum/IBC pump | Flux F‑Series | Portable; quick‑change tubes; XP motor options where required |
| Day‑tank / system accessories | Tanks, calibration columns, injection quills | J.L. Wingert | Complete accessory kits to stabilize dosing and verify flow |
Recommended Pumps & Accessories (Placeholders)
Tip Send SDS, target residual, flow window, discharge pressure, control signal (pulse/4–20 mA), and existing P&ID. We’ll return a matched package with curves and accessories.
How We Engineer Chlorination Systems
- Off‑gassing control—degassing heads, flooded suction, back‑pressure valves, vertical discharge.
- Materials—PVDF/PFA/PTFE for oxidants; 316SS where appropriate; elastomers by SDS & temp.
- Controls—pulse/4–20 mA pacing, residual analyzers, dose‑to‑flow, interlocks and alarms.
- Containment—sealless transfer, vent/overflow routing, drip trays and leak detection.
- Verification—calibration columns and stroke/flow confirmation for compliance reporting.
Common Chlorination Tasks
- Primary disinfection (free chlorine)
- Chloramine generation (ammonia feed)
- Post‑chlorination trim
- Hypo transfer to day tanks
- Analyzer/PLC dose control
- Dechlorination (sulfite/bisulfite)
- Cooling tower shock dosing
- Filter backwash disinfection
- Chemical inventory & day‑tank management
- CIP sanitation dosing
Disinfect with Confidence
Share residual targets, flow range, pipe size/pressure, chemistry and controls. We’ll quote a compliant, low‑maintenance chlorination package.
Chlorination FAQs
Why does hypochlorite cause metering pumps to lose prime?
Hypo off‑gasses. Use degassing heads, flooded suction, short suction lines and a back‑pressure valve with vertical discharge to keep checks seated.
Sealless or sealed pump for bleach transfer?
Sealless mag‑drive (PP/PVDF/ETFE) avoids mechanical seals and reduces emissions—ideal for oxidants and closed transfer to day tanks.
Which accessories improve metering accuracy?
Back‑pressure and relief valves, pulsation dampeners (as needed), calibration columns, and injection quills sized for pipe velocity and penetration.