Salt Chlorination
No chlorine deliveries, no chemical handling — just water that disinfects itself.
The technology explained.
A salt-chlorination cell generates free chlorine on-site by electrolysing a low concentration of dissolved salt (typically 3 000–4 000 mg/L NaCl) in the pool circulation flow. The chlorine generated is identical to dosed chlorine; the spent chloride converts back to salt as residual is consumed, making the process effectively closed-loop within the pool.
- Generates free chlorine on demand from dissolved salt — no chlorine handling on site.
- Maintains an even residual through circulation; over-shoot peaks are eliminated.
- Lower chloramine and combined-chlorine levels than batch dosing on most installations.
- Integrates with ORP/pH control for hands-off chemistry management.
- Lodges, villas and hotels avoiding on-site liquid chlorine deliveries.
- Premium pools targeting a gentler swim experience with lower chloramine.
- Sites where automated chemistry is critical (resident-and-guest models).
- Indoor pools where chloramine off-gassing is a guest-comfort concern.
- ×Salinity is brackish — incompatible pump and heater materials must be selected accordingly.
- ×Cell life is finite — replacement on a 5–10 year schedule is part of the lifecycle cost.
- ×Calcium scale on the cell needs periodic acid cleaning.
- ×Not a stand-alone disinfection system on heavily-loaded commercial pools — pair with UV or ozone.
Where Salt Chlorination is used.
- Residential pools
- Luxury hospitality pools
- Spa circuits where chlorine handling is undesirable
How HidroVerse deploys Salt Chlorination.
We deploy salt chlorination on most lodge and villa pools where on-site liquid-chlorine handling is undesirable. Cell sizing is matched to bather load and pool turnover, not to the catalogue rating; ORP and pH feedback control are non-optional on commercial duty.
A typical Salt Chlorination treatment chain.
Salt chlorination replaces the dosing skid, not the filtration. Everything else in the pool stays.
Pre-treatment
Filtration (AFM or sand) ahead of the salt cell to protect the electrodes from solids fouling.
Core stage
Salt-chlorination cell sized against bather load, with ORP and pH feedback control. Chlorine produced on demand from dissolved NaCl.
Post-treatment
Optional UV polish for low-residual operation; cyanuric-acid stabilisation outdoors; periodic shock-dosing for combined-chlorine breakpoint.
Waste handling
Calcium scale on the cell removed via scheduled acid clean; cell replaced on 5–10 year cycle as part of lifecycle cost.
Buyer's guide.
The questions every commercial buyer should put on the table before signing for a water system. Can't see yours? Send us a brief — a HidroVerse specialist replies within one business day.
Yes — we keep a current reference list organised by application and scale. After a short qualifying call we release names, contacts and (with the host's permission) site-visit options. The conversation between two operations managers is the most honest reference we can offer; we do not gate-keep it.
We start with a SANAS-accredited feed-water panel, profile your demand against verified occupancy or production data (not brochure numbers), and specify against the worst-credible feed and peak demand — with disclosed margins. If a simpler technology will hit the brief, we'll specify the simpler technology and tell you why. We do not earn more by over-spending you; we earn more by you renewing service contracts year after year.
PFD, P&IDs, sizing calculations against verified influent data, equipment schedules with serial numbers, control philosophy, pre-treatment justification, waste-handling and regulatory compliance trail. Audit-ready by an external ECSA-registered engineer is the standard we design to — not a brochure pack with marketing fluff.
Pre-treatment is technology-specific (sediment, hardness, chlorine, biological load) and non-optional. Skipping it is the single largest cause of premature failure on every membrane, media bed and disinfection stage. Watch for suppliers quoting only the core stage — they are selling you a 12-month problem.
Every consumable and major component has a quantified replacement trigger (differential pressure, flow drop, UV intensity drop, salt-passage drift). Replacement schedules and trigger limits are written into the HidroVerse Care contract — visible, auditable and triggered on monitoring data, not guesswork.
Critical components are specified with duty/standby and automatic fail-over so a single failure does not stop supply. Our SLA on critical lines is 4 hours on site; the median lived response over the last 14 months is 2 hours 40 minutes. Telemetry triggers tickets before the operator notices — most failures are flagged, not phoned in.
Continuous telemetry on flow, pressure, conductivity, turbidity and on-skid water quality. Monthly SANAS-accredited compliance sampling is included on HidroVerse Care — not invoiced piecemeal. The audit pack builds itself monthly so when DWS or your insurer arrives, the file is ready in 30 minutes.
Potable applications: SANS 241:2015 (mandatory under the Water Services Act 108 of 1997), the National Water Act 36 of 1998 for abstraction and discharge, NSF/ANSI component certification, WHO Guidelines for design margin. Wastewater: the relevant DWS discharge authorisation under General Authorisation 665 or a site-specific Water Use Licence. We sign off against the legal floor and design to a margin above it.
Survey 1–2 weeks, design 2–4 weeks, install 4–10 weeks, commissioning and proof of compliance 1–2 weeks — typically 8–14 weeks for a lodge or estate, longer for mining and municipal. Delays come from civil works, third-party council approvals and architectural changes; the engineered scope rarely slips.
Survey, lab analysis, design pack, equipment, install, commissioning, operator training, the first year of monthly compliance sampling and the agreed scope of HidroVerse Care. Civils, electrical reticulation, third-party council fees and any architectural integration work are quoted separately and scheduled into the contract. If your quote has 'allowances' and 'provisional sums' across the page, you are buying a future invoice.