Unidro

What Unidro does

Unidro is an Italy-headquartered process engineering company specializing in water treatment systems for the Oil & Gas and Energy sectors, with operations in Milan and Sesto San Giovanni. Since its founding circa 1984 and acquisition by Nijhuis Saur Industries (NSI) in 2020, it has positioned itself as a single-source provider covering feasibility studies, process design, detail engineering, pilot testing, fabrication, commissioning/start-up, and after-sales service. The company's technology portfolio centers on produced water treatment, condensate recovery (resin coalescers), atmospheric and vacuum degasifiers, nutshell and cartridge filters, MBR membrane bioreactor systems, brine evaporators for Zero Liquid Discharge, hairpin-type heat exchaners, precoat filters, and dissolved air flotation (DAF) units.

The business model is project-based enterprise sales to EPC contractors and operators, with revenue drawn from engineered solutions (project-specific design and supply), engineered products (standalone equipment such as filters, heat exchangers, and flotators), pre and after-sale services (consultancy, training, spare parts, troubleshooting), and in-house fabrication (pressure equipment, piping, skid assembly). Customers are predominantly large industrial operators; flagship references include integrated water treatment packages across four new Qatar LNG trains (8 MTPA per train), refinery wastewater treatment for KNPC in Kuwait, LNG plant water treatment in Texas and Louisiana, and a biomass power plant project in Copenhagen.

Since joining NSI — itself part of the French Saur Group — Unidro functions as a Global Technology Center within a portfolio that includes brands such as Econvert, Flootech, PWNT, Aqua-Chem, and CirTec, and benefits from regional centers spanning Benelux, France, the UK & Ireland, Central Europe, Central Asia, the Americas, the Middle East & Africa, and Asia Pacific. This integration provides geographic reach, cross-sell channels, and a "Customer-for-life" service backbone, while Unidro retains its specialist focus on Oil & Gas and energy-transition water treatment.

Name

Unidro

Legal name

Unidro

Website

https://unidro.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

51–100 employees

Short description

Unidro is an Italy-based process engineering firm, part of Nijhuis Saur Industries, that designs, fabricates, and services water treatment systems — produced water, condensate recovery, degasifiers, brine evaporators — for Oil & Gas EPC contractors and operators globally.

Ownership category

akta.pro rank

Product category

Industrial Water Treatment Engineering

NAICS

Water, Sewage and Other Systems (2213)

SIC

Oil & Gas Field Machinery & Equipment (3533), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Produced Water Management & Treatment (Handling, Disposal, Reuse) (EUAAAAAN)

akta.pro secondary industries

Advanced Treatment & Purification Utilities (MF/UF, RO, AOP, UV) (EUANAGAD), Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

Keywords

• Industrial water treatment
• Oil and gas engineering
• Produced water treatment
• LNG water treatment
• Wastewater treatment systems

Headquarters

HQ city

Milano

HQ country

Italy

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineered Solutions: Custom-designed water treatment systems including pure water treatment, wastewater treatment and reuse, produced water treatment, condensate recovery, lean amine treatment, brine purification, and water injection solutions. Revenue is generated through project-based engineering, design, and fabrication contracts for large industrial clients.
2. Pre and After-Sale Services: Comprehensive service offerings including consultancy, training programs, spare parts and consumables, and troubleshooting support. Provides ongoing revenue through service contracts and parts sales.
3. Engineered Products: Manufactured equipment including cartridge filters, nutshell filters, hairpin-type heat exchangers, precoat filters, and flotators sold as standalone or bundled products.
4. In-House Fabrication Services: Pressure equipment manufacturing, piping fabrication, and skid assembly services provided from their manufacturing facilities.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Unidro is an engineering company providing custom water treatment solutions for the Oil & Gas and Energy sector. Its core offering spans feasibility studies, process design, detail engineering, pilot testing, in-house fabrication, field assistance during commissioning and start-up, and after-sales services including spare parts. The company delivers single-source engineered solutions and fabricated equipment for produced water treatment, condensate recovery, brine purification, water injection, and industrial process water management.

Product overview

Unidro, part of Nijhuis Saur Industries (NSI), offers a comprehensive portfolio of water treatment solutions for the Oil & Gas and Energy sectors. The portfolio consists of four interconnected pillars: (1) Engineered Solutions including pure water treatment, wastewater treatment and reuse, produced water treatment, condensate recovery and treatment, lean amine treatment, brine purification, water injection, and O&G process equipment, with core spotlight solutions such as Atmospheric & Vacuum Degasifiers, Brine Treatment Evaporators, Condensate Treatment Resin Coalescers, and Nutshell Filters; (2) Engineered Products including cartridge filters, nutshell filters, hairpin-type heat exchangers, precoat filters, and flotators; (3) Pre and After-Sale Services encompassing consultancy, training programs, spare parts and consumables, and troubleshooting; and (4) In-House Fabrication Facilities for pressure equipment and piping/skid assembly. Unidro provides end-to-end capabilities from feasibility studies and process design through fabrication, commissioning, and after-sales support, with over 40 years of experience supplying EPC contractors and operators worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• Pure Water Treatment Engineered solutions producing high-purity water for industrial process requirements, serving Oil & Gas and Energy sector clients through EPC Contractors and Operators.
• Waste Water Treatment and Reuse Treatment systems for industrial wastewater that enable water reuse and compliance with discharge standards for Oil & Gas and industrial clients.
• Produced Water Treatment Treatment solutions for oil and gas produced water to remove oil, suspended solids, and other contaminants from upstream operations.
• Condensate Recovery and Treatment Systems for recovering and treating condensate streams, including resin coalescers for free oil contamination removal, serving gas processing and LNG operations.
• Lean Amine Treatment Treatment solutions for lean amine streams in gas processing operations, used by Oil & Gas operators to maintain amine system performance.
• Brine Purification Purification systems for brine streams, including energy-efficient evaporation solutions for Zero Liquid Discharge (ZLD) applications in industrial process water treatment.
• Water Injection Water injection treatment systems for oil and gas operations, supplying treated water suitable for injection into reservoirs.
• O&G Process Equipment Process equipment specifically designed and fabricated for oil and gas industry applications, including custom-engineered process systems.
• Atmospheric & Vacuum Degasifiers Degasification towers, ejectors, condensers, and structural internal parts designed and manufactured for removing oxygen, H2S, and other volatiles from water streams.
• Brine Treatment Solutions – Evaporator Energy-efficient evaporation solutions for Zero Liquid Discharge (ZLD) and wastewater treatment optimization in industrial applications.
• Condensate Treatment – Resin Coalescers Resin coalescer solutions for condensate streams with free oil contamination, designed to protect downstream assets from oil fouling.
• Nutshell Filter Nutshell filters using walnut shell media for removing oil and suspended solids from challenging water streams; widely used for produced water treatment.
• Cartridge Filters Engineered filtration products for industrial water treatment, removing fine particles and contaminants from liquid streams.
• Hairpin-Type Heat Exchangers Engineered heat exchange equipment for thermal processing of water and process streams in industrial applications.
• Precoat Filters Filtration systems using precoat media for high-purity filtration requirements in industrial water treatment processes.
• Flotators Dissolved Air Flotation (DAF) systems for separating oils, fats, and suspended solids from wastewater in industrial applications.
• Consultancy Services Expert advisory services for water treatment process design and optimization, supporting customer engineering teams across feasibility and project planning stages.
• Training Programs Educational programs for customer personnel on operation and maintenance of treatment systems, delivered as part of pre and after-sale services.
• Spare Parts and Consumables Original spare parts and consumable supplies for maintained equipment, providing ongoing revenue through service contracts and parts sales.
• Troubleshooting Services Technical support for diagnosing and resolving operational issues with water treatment systems, delivered under the Customer-for-life after-sales approach.
• Pressure Equipment Shop In-house manufacturing of pressure vessels and equipment meeting industry standards, delivered from Unidro's fabrication facility in Sesto San Giovanni.
• Piping Fabrication and Skid Assembly Shop Fabrication of piping systems and modular skid-mounted assemblies for complete water treatment packages, executed at Unidro's in-house manufacturing facility.

Quantifiable outcome

• Nearly 5,000 m³/h per train water treatment capacity in LNG projects
• +1 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

One partnership is on record.

• Nijhuis Saur Industries (NSI)coreStrategic or Co-development Partner · 1 January 2020Unidro has been part of Nijhuis Saur Industries since 2020, operating as a global technology center within the NSI portfolio. This partnership provides Unidro with integration into a broader water treatment technology ecosystem, deep focus on energy transformations, circular economy, and environmental sustainability initiatives.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Veolia Water Technologies: Global water treatment major offering engineered solutions, process equipment, and EPC services for industrial and energy markets. Directly comparable to Unidro's produced water, condensate, and brine treatment offerings but at vastly larger scale and broader geographic reach.
• Ecolab (Nalco Water): Global leader in water treatment chemicals and process solutions for O&G, refining, and power. Overlaps with Unidro on produced water management and cooling/boiler water, but emphasizes chemical and digital services rather than fabricated equipment.
• SUEZ Water Technologies & Solutions: Industrial water treatment and process solutions provider serving O&G, power, and chemical sectors. Competes with Unidro across filtration, membrane, and process water treatment, with significantly larger installed base and chemical service offerings.
• Pall Corporation (Danaher): Filtration, separation, and purification specialist serving O&G, refining, and chemical markets. Directly competes with Unidro on cartridge filters, coalescers, and produced water filtration, with much broader product catalog and global service network.

Direct peers

• Fluence Corporation: Designs, builds, and operates decentralized water and wastewater treatment plants for industrial and municipal customers. Comparable to Unidro in delivering packaged engineered solutions, though with a stronger wastewater/reuse focus and exposure to emerging markets.
• Ovivo: Provider of water and wastewater treatment solutions for industrial markets including O&G and energy. Competes with Unidro on engineered filtration, biological treatment, and process equipment, with comparable mid-sized EPC project focus.
• Aqua-Chem: Sister brand within Nijhuis Saur Industries specializing in water treatment for LNG, oil & gas, and industrial applications. Operates as a near-direct peer within the same parent platform, addressing overlapping customer use cases including LNG and process water.
• PWNT: Another Nijhuis Saur Industries technology center focused on industrial water and wastewater treatment, including O&G applications. Functions as a sibling peer within NSI with overlapping capabilities in engineered water treatment solutions.
• Aquatech: Specialist in industrial water treatment for O&G (upstream and downstream), LNG, refining, and power generation. Provides engineered produced water, desalination, and ZLD systems — closely aligned with Unidro's core Oil & Gas water treatment focus and EPC project model.

Emerging players

• H2O Innovation: Provider of membrane filtration systems and water treatment solutions for industrial and municipal markets. Comparable in delivering engineered filtration and process systems, though smaller in scale and less concentrated in O&G mega-projects than Unidro.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/nijhuisindustries
• Facebookfacebook.com/nijhuisindustries
• LinkedInlinkedin.com/company/nijhuis-industries/?feedView=all
• Instagraminstagram.com/nijhuissaurindustries

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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 Unidro