What Salinity Solutions does

Salinity Solutions is a UK-based water technology company that develops and commercializes HyBatch™ (Hybrid Batch Reverse Osmosis), a patented membrane-based water treatment technology described as a breakthrough in the field. Spun out of the University of Birmingham in 2021 after more than a decade of research led by Professor Philip Davies, the company's core technology uses a piston-driven pressure exchange process to recirculate brine through membranes multiple times, achieving up to 98% water recovery and 50% energy reduction versus conventional RO systems — including the ability to operate at 95%+ recovery without calcium carbonate scaling where conventional systems fail at 80%. The product portfolio includes the HyBatch™ core system, the SAM50 mobile containerized unit (20-foot, rapid-deployment), the SAM120 for mineral extraction, and the RealZLD™ service brand for the Indian market.

The company targets municipal water utilities (wastewater reuse, phosphorus/nutrient removal), industrial firms requiring Zero Liquid Discharge compliance, lithium and critical mineral extractors, vertical farms, and pharmaceutical process water applications. Salinity Solutions makes money through a multi-stream model: direct enterprise equipment sales (SAM50, SAM120, custom systems), licensing royalties (RealZLD in India, Toshiba in Japan, Neobium Pay-As-You-Go channel), engineering and trial fees from pilot projects, and managed ZLD services via its RealZLD subsidiary. Its go-to-market combines direct enterprise sales to flagship accounts (SUEZ, Cornish Lithium, GrowUp Farms, Bosch, Wessex Water, Toshiba) with strategic licensing partnerships (RealZLD, Neobium) and OEM/whitelabel deals for geographic expansion. Manufacturing is handled via partner Te-Tech Process Solutions.

The company is headquartered at Tyseley Energy Park in Birmingham with a registered office in London, holds 11-50 employees, and has raised approximately £3M+ in disclosed funding across seed (2021, Clean Engineering and Crowdcube £750k), Crowdcube (£700k in 2022 at £4.9M post-money), SQM Lithium Ventures (£1M in March 2024), and an ongoing £600k ASA (September 2025). Revenue reached £1M in FY2024 (predominantly engineering and trial fees) with breakeven achieved in Q4 2024, and the company is now deploying pilots across UK, India, France, Chile, and Japan.

Name

Salinity Solutions

Legal name

Salinity Solutions Ltd

Website

https://salinitysolutions.co.uk

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

11–50 employees

Short description

Salinity Solutions is a UK-based water technology company that commercializes HyBatch™, a patented Hybrid Batch Reverse Osmosis system achieving up to 98% water recovery with 50% less energy than conventional RO. It serves municipal utilities, industrial ZLD operators, lithium miners, and vertical farms via direct sales, licensing, and OEM partnerships.

Ownership category

akta.pro rank

Product category

Industrial Water Treatment Technology

NAICS

Sewage Treatment Facilities (22132), Waste Treatment and Disposal (5622), Measuring, Dispensing, and Other Pumping Equipment Manufacturing (333914)

SIC

Water Supply (4941)

akta.pro primary industry

Advanced Treatment & Purification Utilities (MF/UF, RO, AOP, UV) (EUANAGAD)

akta.pro secondary industries

Industrial Water Reuse Utilities (ZLD/MLD & Process Water Recycling) (EUANAGAG), Industrial Wastewater Reuse (Cooling/Process/Boiler Feed) (EUANADAM)

Keywords

• Water treatment technology
• Reverse osmosis systems
• Zero liquid discharge
• Membrane desalination
• Industrial wastewater reuse

Headquarters

HQ city

Coventry

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure, Supply Chain

Revenue model

1. Licensing Royalties: The company licenses its HyBatch technology to partners for deployment in specific geographies and applications. First licensing deal signed with RealZLD in India for Zero Liquid Discharge services. Licensing model allows rapid global scale without direct manufacturing/distribution investment.
2. Equipment Sales: Direct sales of HyBatch systems, including the SAM50 mobile unit and custom-built systems for specific applications like lithium enrichment, pharmaceutical process water, and industrial wastewater treatment.
3. Engineering and Trial Fees: Revenue from engineering services, field trials, and pilot programs. The company delivered £1m in revenue in 2024, mostly for engineering and trial fees.
4. Zero Liquid Discharge Services: Through RealZLD joint venture in India, offering disruptive ZLD services to industrial firms. RealZLD offers up to 98% wastewater recovery while using 90% less energy than competing technologies.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels7 records

Core offering

Salinity Solutions develops and commercialises HyBatch™, a patented Hybrid Batch Reverse Osmosis (HBRO) technology that uses a piston-driven pressure exchange process to achieve up to 98% water recovery with up to 50% less energy than conventional RO systems. The company sells and licenses HyBatch-based systems (including the containerised SAM50 and SAM120 units) for municipal wastewater reuse, industrial zero liquid discharge, lithium brine concentration, and process water applications. Revenue is generated through direct equipment sales, technology licensing (e.g., RealZLD in India, Toshiba in Japan), and engineering/trial fees.

Product overview

Salinity Solutions is a technology development company offering HyBatch™ - a patented Hybrid Batch Reverse Osmosis technology that achieves up to 98% water recovery with 50% less energy than conventional systems. The core product portfolio includes HyBatch™ systems for industrial and municipal applications, RealZLD™ (a licensed sub-brand for Indian zero liquid discharge market), and specialized SAM-series units (SAM50 for mobile/deployment use, SAM120 for mineral extraction). Applications span municipal wastewater reuse, lithium enrichment, pharmaceutical process water, food & beverage, vertical farming, Zero Liquid Discharge (ZLD), and nutrient removal. The company operates through manufacturing partners (Te-Tech Process Solutions) and licensing partnerships (RealZLD in India, SUEZ for municipal reuse, Toshiba for Japanese market).

Differentiator

Problem solved

Functional benefit

Brands

• HyBatch™: Proprietary hybrid batch reverse osmosis technology that delivers higher water recovery with up to 50% less energy than conventional systems.

Products and services

• HyBatch™ Hybrid Batch Reverse Osmosis Technology Patented Hybrid Batch Reverse Osmosis (HBRO) technology for water treatment systems. Uses a piston-driven pressure exchange process to recirculate feedwater around membranes, achieving up to 98% water recovery with up to 50% less energy than conventional RO systems. Sold/licensed to industrial and municipal customers globally.
• SAM50 Mobile Water Treatment Unit Compact, rapidly deployable 20-foot containerised HyBatch RO unit designed for mobile field deployment. Can be transported on a HIAB lorry and operated on domestic power or with renewable energy. Delivers up to 98% water recovery and has been used for phosphorus/nitrate removal and lithium brine concentration trials.
• SAM120 Desalination Unit Compact, energy-efficient HyBatch RO unit designed for mineral concentration applications such as lithium extraction. Larger-capacity counterpart to the SAM50 mobile unit.
• RealZLD™ Zero Liquid Discharge Service Licensed zero liquid discharge service for the Indian market combining HyBatch RO with Quadsun convection-enhanced evaporation. Offers up to 98% wastewater recovery while using 90% less energy than competing ZLD technologies. First customer was Bosch at its Bidadi automotive plant near Bengaluru.
• HyBatch Municipal Wastewater Reuse Solution HyBatch-based municipal wastewater reuse solution developed with SUEZ for water utilities. Achieves 90-95% water recovery while limiting brine volumes, chemical use, and energy consumption. Operates at industrial pilot scale at the Béziers plant in France.
• HyBatch Batch Purification System (Industrial) Industrial-scale HyBatch RO system for zero liquid discharge and process water applications. World's first commercialised batch reverse osmosis wastewater treatment technology. Purifies up to 98% of wastewater with 50% less energy than conventional RO systems.
• HyBatch Lithium Brine Concentration Solution HyBatch-based energy-efficient reverse osmosis system for lithium brine concentration and mineral extraction. Enables sustainable lithium extraction by concentrating brines with significantly lower energy use than evaporation ponds or conventional membrane processes.

Quantifiable outcome

• 50% energy reduction vs conventional RO systems
• +8 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature4 records

Partnerships

Eleven partnerships are on record, tiered core, secondary, strategic and flagship.

• Xylem Innovation LabscoreStrategic or Co-development Partner · 1 April 2026Selected for Xylem Innovation Labs 2026 Partnerships Accelerator Cohort to accelerate HyBatch RO deployments with global water technology leader. Collaboration with Xylem's innovation, technical and commercial teams on commercial pathways for ZLD, industrial process water, oil & gas, and mining applications.
• NeobiumsecondaryChannel Partner/ Reseller/ Distributor · 1 November 2025Channel partner agreement to accelerate sustainable water solutions for India's industrial sectors. Combining HyBatch RO and Quadsun evaporators with Neobium's Pay-As-You-Go business model for ZLD compliance, cost reduction, and carbon footprint reduction.
• Toshiba Infrastructure Systems & Solutions Corporation (TISS)strategicOEM/ Whitelabel/ Licensing Partner · 1 March 2025Toshiba diversifying portfolio to offer HyBatch technology. Order placed following successful lab-based feasibility trial. Targeting potential replacement for existing high pH RO process for Zero Liquid Discharge in Japanese market.
• SUEZflagshipStrategic or Co-development Partner · 16 April 2024Strategic partnership with SUEZ to pilot Hybrid Batch Reverse Osmosis technology for municipal wastewater reuse. First industrial pilot launched at Béziers wastewater treatment plant in France (April 2026), operating at 100 m³/day capacity with 90-95% water recovery. Supported by ADEME.
• RealZLDcoreOEM/ Whitelabel/ Licensing Partner · 1 January 2024Licensed partner for India market. RealZLD integrates HyBatch RO with Quadsun's convection-enhanced evaporation technology for Zero Liquid Discharge services. First customer: Bosch Bidadi plant near Bengaluru. Offers up to 98% wastewater recovery at 90% less energy than competing technologies.
• GrowUp FarmscoreStrategic or Co-development Partner · 1 January 2024Partnership for vertical farm wastewater trial - first globally in food sector. Trial demonstrated 98% water recovery to standard better than tap water. Won Water Conservation Award and Water Efficiency Project of the Year. Growing Kent & Medway funding.
• Wessex WatercoreStrategic or Co-development Partner · 1 January 2023Partnership for field trial at Fivehead Wastewater Treatment Works demonstrating phosphorus and nitrate removal from municipal wastewater. Trial supported by DEFRA minister and local MP visits. Generated phosphorus credits for Somerset housing development.
• Te-Tech Process SolutionscoreOEM/ Whitelabel/ Licensing Partner · 1 January 2023Manufacturing partner for custom water treatment units. Te-Tech manufactures and markets patented batch reverse osmosis technology. Partnership announced March 2023 for commercial production of HyBatch systems.
• Quadsun TechnologycoreTechnology or Integration · 1 January 2023Convection enhanced evaporation technology integrated with HyBatch RO for Zero Liquid Discharge solutions. Combined offering reduces evaporator demand and overall energy consumption of ZLD process.
• Cornish LithiumcoreStrategic or Co-development Partner · 1 January 2022First field trial of SAM50 prototype at Cornish Lithium's United Downs site. System concentrated lithium brine by over 5x (target was 5x). Letter of intent to purchase SAM120 unit. Technology improves efficiency of lithium extraction from geothermal waters.
• University of Birmingham EnterprisecoreStrategic or Co-development Partner · 1 January 2021Spinout from University of Birmingham. Ongoing Knowledge Transfer Partnership to scale patented technology. University is investor and shareholder. Ongoing collaboration with Prof Philip Davies for R&D including current work in Germany on higher-pressure systems.

Scale indicators10 records

Recent moves8 records

Expansion highlights8 records

Broad incumbents

• SUEZ: Global water and waste management major and Salinity's strategic partner for the Béziers municipal reuse pilot. Overlaps with Salinity on municipal wastewater treatment and reuse but operates across the full water value chain at vastly larger scale.
• Xylem: Global water technology leader; Salinity was selected for the Xylem Innovation Labs 2026 Partnerships Accelerator. Comparable as a buyer/integrator of advanced RO and water reuse technologies, though Xylem's portfolio is far broader than batch RO.
• Veolia: Largest global water services and technology provider; competes with Salinity in municipal reuse and industrial ZLD, and could become a competing batch RO adopter or licensee given its scale and R&D capacity.
• DuPont Water Solutions: Global leader in RO and nanofiltration membranes and systems; comparable as the dominant membrane-based incumbent whose installed base Salinity's batch RO architecture competes against or complements.

Direct peers

• Gradiant: US-headquartered industrial water treatment specialist focused on ZLD, water reuse, and resource recovery for hard-to-treat industrial streams. Closely comparable to Salinity's HyBatch ZLD offering for industrial customers.
• Fluence Corporation: Provider of decentralized water and wastewater treatment, including ZLD and packaged desalination plants. Comparable on industrial ZLD and modular/containerized water treatment units similar to Salinity's SAM50 mobile platform.
• Saltworks Technologies: Canadian desalination and ZLD technology developer focused on industrial brine treatment and lithium extraction. Direct peer on high-recovery RO and lithium brine concentration, with overlapping target customers in mining and chemicals.
• Energy Recovery Inc: US-listed supplier of pressure exchanger and energy recovery devices for seawater reverse osmosis. Conceptually the closest peer to Salinity's pressure-exchange innovation, although Energy Recovery is a component supplier rather than a system licensor.

Emerging players

• Aqua Membranes: Early-stage US startup developing printed RO membrane technology to reduce fouling and energy use. Comparable as an emerging RO technology challenger targeting similar industrial and municipal reuse applications.

Regional players

• Toshiba Infrastructure Systems & Solutions: Salinity's Japanese OEM/whitelabel partner for the Japanese market. Comparable as a regional water infrastructure player that is now distributing Salinity's HyBatch alongside its own ZLD offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/salinity-solutions

Revenue estimate

Valuation estimate

Number of profiles

Profiles17 records

Subsidiaries1 record

Funding overview

Funding rounds2 records

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Salinity Solutions