Turn brackish groundwater into usable water — up to 95% recovery in a single pass.

The same technology works on other brackish water where RO struggles or brine has nowhere to go.

Removes nitrate at the same time — and keeps the calcium and magnesium your water needs.

Send your water analysis Brackish water for irrigation

Up to 95%recovery in a single pass

As little as 5%brine at 1–3 g/L

Reducedchemical dependency

Pilot → plantvalidated scale-up pathway

Recovery by salinity →

Hydrovolta SonixED process flow: from difficult groundwater through patented treatment to clean water output with optional brine valorization

Not sure where your source water fits? Send us your water analysis →

Three operating contexts

Where conventional groundwater treatment reaches its limit.

Each of these groundwater treatment constraints has an active Hydrovolta deployment behind it.

RO solves one problem and creates another.

RO strips nitrate and everything else — including calcium and magnesium the output still requires. When the target is NO₃¯ compliance without full demineralisation, selective electrodialysis is the answer RO cannot give you.

Perth Water Corporation
One site now · three more bores in 2027 · nitrate compliance

See the reference →

Scaling kills the pilot before scale-up.

At silica above 60–80 mg/l combined with high hardness, RO membranes foul before the economics can be demonstrated. Acoustic cavitation prevents scaling at nucleation — before chemistry establishes itself on the membrane.

Germany Industrial Pilot
TDS 4,500 ppm · silica 85 mg/l · 90-day head-to-head vs RO

See the operating data →

Brine volume makes the project unviable.

Conventional RO recovers roughly half to two-thirds of brackish feed. Inland sites with no coastal or river discharge face a disposal liability that kills the business case before technical evaluation begins. As little as 5% brine at 1–3 g/L changes the constraint entirely.

Morocco Deployment
Coastal brackish aquifer · brine valorization integrated · active 2025–2028

See the deployment →

Not sure which applies? Send your water analysis → We assess fit and tell you if it does not match.

Engineers commissioning SalinBloc control systems on site Morocco — On-site system commissioning — Morocco deployment

SalinBloc containerised water treatment unit — SalinBloc™ 20 ft container — ready for deployment

SalinBloc process pump array interior — SalinBloc™ process equipment — pump array and manifolds

Technology

SonixED™ — electrodialysis reversal strengthened by ultrasound.

SonixED™ combines electrodialysis reversal, ultrasound-assisted scaling control, and a proprietary selective membrane coating. Developed through institutional research partnerships over eight years. Patent granted 2021. Projects, pilots and pipeline across four continents.

EDR

Electrodialysis Reversal

Electric potential drives selected ions through membranes. Polarity reversal cleans membranes without chemical intervention. Stable output under variable feed TDS.

Ultrasound Anti-Scaling

Acoustic cavitation at the membrane surface prevents silica and hard-water scaling. 50–90% reduction in CIP cycles in validated operating contexts. Extended membrane lifespan.

SEL

Selective Ion Removal

Custom membrane coating removes nitrate, sodium, chloride, fluoride while retaining calcium and magnesium. Mineral-balanced output. No post-treatment remineralisation required.

Technology deep dive

See the system

SonixED™ operating at a groundwater deployment site.

A walkthrough of active Hydrovolta equipment — from the SalinBloc™ containerised unit to the treatment stack inside.

Reference projects

Active deployments, utility pilots, and development pipeline.

Projects are labeled accurately by maturity. Hydrovolta has active equipment generating operational data, a contracted utility pilot, and signed LOI and MOU-stage pipeline across four continents.

Agricultural land supplied by Perth groundwater treatment

Utility Pilot Reference

Perth, Australia — Water Corporation

Brackish groundwater with nitrate. >95% recovery at 1–3 g/L, 0.4 kWh/m³. One site now; three more bores at other Perth locations in 2027. Cloud telemetry and regulatory monitoring active. Hydrovolta’s primary utility reference internationally.

Morocco integrated water treatment project site

Active Project

Morocco — Coastal brackish groundwater with brine valorization

Coastal brackish aquifer, 7–18 g/L TDS (varies). SonixED™ delivering brackish groundwater treatment with integrated downstream brine valorization. Funded by the Flanders Climate Action Program. Hydrovolta’s primary integrated reference site.

LOI Signed

Brazil — Remote groundwater (LOI)

Development-stage project for nitrate and salinity co-contamination at a remote site. High-recovery treatment and minimal brine disposal are central to the technical and economic case.

MOU · Pilot in Development

Saudi Arabia — Selective ion recovery (MOU)

Development-stage opportunity for selective ion recovery from deep brackish groundwater and brine streams. Pilot design in progress. MOU signed.

All reference projects

Who we work with

Growers, farms, public water programmes and utilities.

Hydrovolta works with organisations that control a brackish groundwater source or process water stream, face a concrete water quality challenge, and need a solution that has been technically validated before full capital commitment.

We understand how projects are funded — through development bank financing, climate action programmes, bilateral aid, or industrial capital budgets. We have navigated all of these pathways in Belgium, Morocco, and Australia.

For government and public authority buyers: We are familiar with the reporting, governance, and milestone structures of development finance institutions and government climate programmes.

Talk to us about your project

Engineering Assessment

Send the water data. We assess the fit.

Submit source water chemistry, TDS, target use, flow requirements, and any brine analysis. Our engineering team will assess whether SonixED™ or a brine valorization pathway is the right answer for your application — and tell you honestly if it is not.

Request Engineering Assessment View References

No commercial obligation. All assessments are based on submitted water chemistry data.