Krüger Kaldnes AS

What Krüger Kaldnes AS does

Krüger Kaldnes AS is a Norwegian water-technology specialist and 100%-owned subsidiary of Veolia Water Technologies (Veolia Environnement S.A., Paris Euronext: VIE), headquartered in Sandefjord, Vestfold, with a workforce of approximately 30 employees. Founded in 1985, the company is described as Norway's leading water contractor and delivers total solutions for wastewater treatment, water treatment, rehabilitation, and service. As of June 10, 2026, it operates publicly under the Veolia brand while retaining its legal entity name Krüger Kaldnes AS for official and legally binding documents.

The company's core offering rests on a broad proprietary technology portfolio, much of it accessed through Veolia, spanning biological wastewater treatment (Kaldnes® MBBR and AnoxKaldnes variants including BAS, Z-MBBR, and LagoonGuard; ANITA™ Mox with Anammox bacteria; Biobed® Advanced EGSB; Biosep®/Neosep®; Ecodisk™), clarification and flotation (ACTIFLO® family including ACTIFLO Carb, ACTIFLO Pack ACP2 and Mini, Musling™, IDRAFLOT®, SPIDFLOW®, Whittier AutoFlot®, TiPSS), filtration (Hydrotech™ drum, belt, and Confidence Series cloth filters; Whittier PowerClean® nutshell filters achieving 98% removal above 5 microns), chemical treatment (Hydrex™), membrane desalination (SIRION™ Seawater, reverse osmosis, Berkefeld PurBev®), and sludge management (BioCon™, MULTIFLO™). Service operations include preventive maintenance, 24/7 emergency response, spare parts, process support and optimization, and SCADA/PLS upgrades through a nationwide service network based in Sandefjord.

Krüger Kaldnes generates revenue through a mix of one-time equipment sales, recurring service and maintenance contracts, professional engineering and project delivery (frequently via Norwegian samspillsentreprise collaboration contracts with municipalities), and process consulting. Pricing is project-specific and quote-based. The go-to-market is direct enterprise field sales targeting Norwegian municipalities as the primary segment, with a secondary industrial segment covering oil and gas, food and beverage, pharmaceuticals, chemicals, mining, microelectronics, pulp and paper, and power generation. Customers include Trondheim Municipality (Høvringen, 170,000 PE), Indre Østfold Municipality (Stegen, 60,000 PE), MIRA IKS (Tangen RA), Modum, Øvre Eiker, Norefjell, and Myrkdalen. The company also operates a Norwegian dealer relationship with Rotary Industry for Nikuni KTM pumps.

Name

Krüger Kaldnes AS

Legal name

Krüger Kaldnes AS

Website

https://krugerkaldnes.no

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Krüger Kaldnes AS (now operating publicly as Veolia in Norway) is a Sandefjord-based water technology subsidiary of Veolia delivering total wastewater and water treatment solutions, rehabilitation, and nationwide service to Norwegian municipalities and industrial clients.

Ownership category

akta.pro rank

Product category

Water and Wastewater Treatment Equipment & Services

NAICS

Sewage Treatment Facilities (22132), Water, Sewage and Other Systems (2213)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ)

akta.pro secondary industries

Advanced/Nutrient Removal (BNR/ENR: N, P) (EUANADAC), Industrial Wastewater & Effluent Treatment Services (BPALAHAD), Water Treatment & Process Specialty Chemicals (IMAEABAN), Treatment Plant Asset Programs (Process Assets, Electrical/Mechanical Systems) (EUANALAL)

Keywords

• Wastewater treatment systems
• Municipal water treatment
• Biological water treatment
• Industrial water treatment
• Water filtration equipment

Headquarters

HQ city

Saint-Maurice

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Water Treatment Equipment & Technologies: Sale and supply of water treatment equipment and proprietary technologies including MBBR systems, filtration, flotation, and treatment chemicals to municipalities and industrial clients.
2. Service & Maintenance Contracts: Preventive maintenance, service agreements, emergency response, spare parts, process support and optimization, upgrades for wastewater treatment plants nationwide.
3. Engineering & Project Delivery: Design, delivery, and project execution of wastewater treatment plants through collaboration agreements with municipalities and industries.
4. Process Consulting & Optimization: Process support, optimization, and consulting services for wastewater treatment operations including SCADA/PLS systems.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Krüger Kaldnes AS supplies total solutions for water and wastewater treatment to Norwegian municipalities and industrial clients, encompassing proprietary treatment technologies (MBBR biological reactors, ACTIFLO clarification, Hydrotech filtration, Musling flotation, Biobed anaerobic systems), equipment, design and project delivery, rehabilitation of existing plants, and ongoing service contracts including 24/7 emergency response and SCADA-based process optimization.

Product overview

Krüger Kaldnes AS (now operating publicly as Veolia in Norway) is a water technology company delivering total solutions for wastewater treatment, water treatment, rehabilitation, and service to municipalities and industries across Norway. As a 100% owned subsidiary of Veolia Water Technologies (fully owned by Veolia Environnement S.A.), the company offers a broad portfolio of patented technologies and branded products spanning multiple treatment categories. The product portfolio includes biological treatment technologies (AnoxKaldnes™ MBBR, AnoxKaldnes BAS™, AnoxKaldnes Z-MBBR, ANITA™ Mox, Biosep®/Neosep®, Biobed® Advanced EGSB, Ecodisk™); clarification and flotation systems (ACTIFLO® family, Musling™, IDRAFLOT®, SPIDFLOW® PACK, WHITTIER FILTRATION AutoFlot®, TiPSS); filtration products (Hydrotech™ Cloth Filter, Hydrotech™ Drum Filters, Hydrotech Belt Filters, Whittier™ PowerClean Nutshell Filters); chemical treatment (Hydrex™); sludge management (BioCon™, MULTIFLO™); membrane and desalination (Berkefeld PurBev® UF/Carbon/Media Filter, Reverse Osmosis, SIRION™ Seawater); and full-service offerings for municipal, downstream oil & gas, food & beverage, and pulp & paper sectors. Service offerings include nationwide maintenance, emergency response, process optimization, and PLS/SCADA support. The company also distributes and services equipment from partner brands including Hydrotech filters, Trojan UV, KD Maskinfabrik, Lackeby, VA Teknik, FUCHS, OTT, Netzsch, and others.

Differentiator

Problem solved

Functional benefit

Products and services

• Kaldnes / AnoxKaldnes MBBR (Moving Bed Biofilm Reactor) Patented Moving Bed Biofilm Reactor (MBBR) system using suspended plastic carriers for biofilm growth, enabling robust biological treatment of municipal and industrial wastewater for carbon, nitrogen, and phosphorus removal.
• Musling Dissolved Air Flotation System Dissolved air flotation system originally developed for fish-processing wastewater to remove fat and oil, now used for industrial and municipal sewage treatment.
• ACTIFLO Microsand-Enhanced Clarifier (family including ACTIFLO Carb and Actiflo Pack ACP2/Mini) High-rate clarification process using microsand ballasted flocculation for rapid suspended solids removal; variants include activated carbon adsorption (Carb) and packaged/compact units (Pack ACP2, Pack Mini) for municipal and industrial applications.
• Biobed Advanced EGSB Anaerobic Treatment System Extremely compact, high-performance anaerobic treatment process for industrial effluents using an Expanded Granular Sludge Bed (EGSB) with granular sludge.
• Hydrotech Drum Filters and Hydrotech Cloth Filter (Confidence Series) / Hydrotech Belt Filters Patented mechanical self-cleaning drum filters and cloth/belt media filters for municipal and industrial recovery water applications, achieving TSS reduction below 5 mg/l and phosphorus removal below 0.2 mg/l.
• Hydrex Water Treatment Chemicals Comprehensive range of water treatment chemicals including biocides, cooling system chemicals, and drinking water treatment formulations for industrial and municipal water systems.
• ANITA Mox Biological Process Biological process using Anammox (ANAMMOX) bacteria for energy-efficient treatment of ammonia-rich streams, reducing nitrogen without methanol consumption.
• Biosep / Neosep Aerobic and Membrane Bioreactor (MBR) Systems Aerobic biological treatment (Biosep) and membrane bioreactor (Neosep) processes for municipal and industrial effluents, with Neosep providing high-quality effluent for water reuse applications.
• Ecodisk Compact Wastewater Treatment Plant Ecological compact treatment system with rotating biological contactors for aerobic treatment of domestic wastewater, designed for 100 to 10,000 population equivalents.
• AnoxKaldnes BAS Biofilm Activated Sludge and Z-MBBR / LagoonGuard Systems Hybrid biological wastewater treatment combining biofilm and activated sludge (BAS) in a single reactor for efficient carbon, nitrogen, and phosphorus removal; Z-MBBR enhances nutrient removal and LagoonGuard upgrades existing lagoons using floating media biofilm.
• Whittier PowerClean Nutshell Filters Patented fluidized bed nutshell filtration process using black walnut shell media to remove 98% of suspended solids and insoluble hydrocarbons down to 5 microns, primarily for produced water de-oiling and refinery wastewater.
• Multiflo Lamellar Sludge Clarifier and Thickener Proven and adaptable sludge clarifier and thickening technology combining lamellar settling with chemical treatment for compact footprint in municipal and industrial water treatment.
• BioCon Sludge Dryer Sludge dryer for dewatering and reducing the volume of sewage sludge from wastewater treatment plants prior to disposal or valorization.
• SIRION Seawater Reverse Osmosis System Compact reverse osmosis system designed for seawater desalination, providing reliable potable water production for maritime, offshore, and coastal installations.
• Berkefeld PurBev Beverage Water Treatment Systems (UF, Carbon, Media) Ultrafiltration, activated carbon, and media filtration systems for the food and beverage industry to produce hygienic, high-purity ingredient and production water.
• IDRAflot and SPIDflow Pack Flotation Systems Induced air flotation (IAF) systems for removal of oil, fat, and suspended solids from industrial wastewater in food processing and petrochemical applications; SPIDflow Pack is a packaged, pre-engineered variant.
• Whittier AutoFlot Induced Gas Flotation Separator Adaptable four-cell induced gas flotation (IGF) separator for high-throughput treatment of oily wastewater, achieving up to 95% removal efficiency and oil/solids concentrations below 10 ppm.
• TiPSS Tilted Plate Separation System Gravity-driven oil-water separation system using corrugated plate separators originally developed with Shell, increasing separation surface area within a compact footprint.
• Reverse Osmosis Membrane Desalination Systems Membrane desalination technology for seawater and brackish water treatment to remove dissolved salts and minerals, producing high-purity water for industrial and municipal use.
• Municipal Water and Wastewater Treatment Solutions Total solutions for drinking water production, wastewater treatment, sludge treatment, and odor control for Norwegian municipalities, including design, delivery, operation, maintenance, and upgrade services.
• Downstream Oil & Gas Water Treatment Solutions Complete process water and wastewater treatment solutions for refineries, including seawater desalination, oily wastewater treatment, groundwater rehabilitation via MPPE technology, and zero liquid discharge solutions.
• Food & Beverage Water Treatment Solutions Water and wastewater treatment solutions for the food and beverage industry covering ingredient water, utility water, process water, wastewater, water recycling, anaerobic digestion for biogas, and nutrient recovery.
• Pulp & Paper Water Treatment Solutions Water treatment solutions for the pulp and paper industry including process water, demineralization plants, aerobic and anaerobic wastewater treatment, sludge dewatering, black liquor evaporation (HPD), and condensate polishing.
• Nationwide Service & Maintenance Contracts Nationwide preventive maintenance, service agreements, emergency response, spare parts, process support, upgrades, and PLS/SCADA optimization for water and wastewater treatment plants across Norway.

Quantifiable outcome

• Høvringen plant serves 170,000 PE (population equivalents) from 2/3 of Trondheim
• +3 more outcomes

Named customers8 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

One partnership is on record.

• Rotary IndustrycoreChannel Partner/ Reseller/ Distributor · 21 April 2026Official dealer partnership in Norway for Nikuni KTM pumps and spare parts. The partnership provides Norwegian customers with better access to equipment, faster service, and stronger local support. The partnership builds on over 20 years of using Nikuni pumps and close collaboration since 2014. These pumps are specifically used for DAF flotation systems for air injection in water to create micro-bubbles.

Scale indicators2 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Pentair plc: Global water treatment and flow technology company offering filtration, softening, and treatment solutions for residential, commercial, industrial, and municipal customers. Comparable in product breadth across filtration and treatment systems.
• Xylem Inc. Global water technology company providing pumps, treatment systems, filtration, and digital water solutions to municipal and industrial customers. Direct overlap with Krüger Kaldnes in MBBR-adjacent biological treatment, filtration, and integrated municipal water/wastewater solutions.
• Kemira Oyj: Nordic-headquartered specialty chemicals company with a strong water treatment chemicals portfolio (coagulants, flocculants, biocides) targeting municipal and industrial water customers. Directly comparable to Krüger Kaldnes' Hydrex™ chemicals business and Nordic geographic overlap.
• Kurita Water Industries Ltd. Japanese-headquartered global water treatment company providing industrial and municipal water treatment chemicals, equipment, and services. Comparable in offering an integrated chemicals-plus-equipment-plus-service proposition.
• Evoqua Water Technologies: North American-headquartered water treatment specialist (now part of Xylem) offering filtration, disinfection, and wastewater treatment solutions. Comparable product portfolio across biological, filtration, and disinfection systems to Krüger Kaldnes.
• Organo Corporation: Japanese pure-play water treatment company serving industrial, semiconductor, and municipal customers with treatment systems and chemicals. Similar integrated water-treatment business model and comparable scale.

Broad incumbents

• Veolia Water Technologies: The global parent and broader Veolia water technology division of which Krüger Kaldnes is the Norwegian entity. Operates the same technology portfolio worldwide (AnoxKaldnes, Hydrotech, ACTIFLO, HPD, etc.) and provides the multinational project delivery and R&D platform that Krüger Kaldnes leverages locally.
• SUEZ Water Technologies & Solutions: Major global water and wastewater treatment operator and technology provider (legacy SUEZ, now largely integrated into Veolia). Competes in the same municipal tender space as Krüger Kaldnes with comparable treatment technologies and project delivery capabilities.

Emerging players

• H2O Innovation Inc. Canadian water treatment specialist focused on membrane filtration, specialty chemicals, and operation & maintenance services for municipal and industrial customers. Smaller and more niche than Krüger Kaldnes but competes in adjacent filtration and specialty chemicals segments.
• Fluence Corporation: Decentralized water and wastewater treatment specialist offering packaged MABR and MBR systems. Competes in the smaller-scale and packaged treatment segment where Krüger Kaldnes also operates (Ecodisk™ for 100-10,000 PE).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/VeoliaWaterTech
• YouTubeyoutube.com/channel/UCXGcz-181WN7rnTai-KpMiA
• LinkedInlinkedin.com/company/krugerkaldnes-as

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Krüger Kaldnes AS