Solutions

Drinking water

Ensures a stable and high-quality water supply

Inrigo designs and delivers solutions that meet all water quality requirements. We use advanced technologies that ensure reliable operation, low maintenance, and low operating costs. We can document quality and the ability to execute both small and large projects, adapt to different operational needs, and deliver results that meet the highest industry standards.

Pipes outside of a water treatment facility

Technologies

Conventional coagulation, sedimentation and filtration plants
Coagulation membrane filtration plant
- Polymeric or ceramic MF/UF membranes
Direct membrane filtration (nanofiltration/RO)
Disinfection with UV, Cl₂, and O₃
Filters for adsorption
Chemical oxidation/AOP (Advanced Oxidation Processes)

Plug & Play

Compact drinking water treatment
systems – ready to use

Removes color, bacteria, and viruses

Complete standard solutions, pre-dimensioned, tested, and proven
Proven, well-functioning membrane technology for over 35 years
Frame-mounted and prefabricated solution, complete with process equipment and internal piping
Control cabinet built onto the frame with PLC, fully function-tested
Remote monitoring from mobile or PC
Compact design, space-saving
Designed for easy capacity increase

Inrigo Compact Systems are delivered as a complete package adapted to local conditions and needs. Robust fiberglass membrane housings with end and side port connections are used. The housings are assembled into a very compact and self-supporting unit, giving the system a good and space-saving design. The system is well-suited to handle high content of natural organic matter (humus). We have delivered compact systems with capacities of 100 – 2500 m³/day adapted to Norwegian requirements for purification levels and execution. Nanofiltration membranes are supplied from the world’s leading manufacturers. The oldest have been in use on rich humus water in Norway since 1989.

Proven
quality

A proven track record of delivering a variety of drinking water
solutions, from small municipal plants to large-scale water
infrastructure projects. Trusted by municipalities and industries
worldwide, with successful deployments in Norway and Africa.

Inrigo delivers a wide range of solutions that meet all water quality requirements for urban municipalities, rural communities, and industries, tailored to local water sources, climate conditions, and regulatory requirements.

We deliver projects of all sizes, from small compact solutions to high-capacity water treatment and distribution networks, ensuring access to clean water for hundreds of thousands of people.

Reliable operation, high quality, reduced maintenance, and lower consumption of energy and chemicals are ensured through advanced SCADA-based automation and AI-driven process optimisation. This results in reduced environmental impact and lower operating costs.

Solutions

Wastewater

Efficient and environmentally friendly wastewater management

Inrigo designs and delivers advanced solutions that meet the strictest regulations in the EU and Norway. We tailor the solution based on the specific characteristics of the wastewater and the requirements for treatment. We use advanced filtration systems that effectively remove organic pollutants, nitrogen, phosphorus, and micropollutants. With our solutions, wastewater can be recovered and reused in Class B, Class A/A+ (non-potable or potable) standards. Our compact designs make the solutions ideal for urban and industrial environments where space is a limited resource.

Pipes and valves inside a wastewater treatment facility

Ceramic microfilters in a facility in Harstad

Technologies

Pretreatment with screens, sedimentation, flotation, and filtration
Secondary and tertiary treatment with MBBR and CAS
Separation by sedimentation, flotation, sand filtration, and MBR
Disinfection with UV, Cl₂, and O₃
Post-treatment with adsorption and oxidation/AOP (Advanced Oxidation Processes)

Proven
quality

We have delivered a range of different solutions for wastewater treatment, from municipal treatment plants to advanced industrial facilities.

Inrigo provides wastewater treatment solutions for municipalities and industries – from small to large and complex plants.

The plants meet stringent discharge regulations while optimising operational efficiency. The solutions can be integrated with our biogas production systems.

Reliable operation, high quality, reduced maintenance, and lower energy and chemical consumption are ensured through advanced SCADA-based automation and AI-driven process optimisation. This results in reduced environmental impact and lower operational costs.

Solutions

Biogas

Waste is a valuable resource.
Make the most of it!

Inrigo offers solutions to convert bio-waste from food production and wastewater management into biogas and valuable organic fertiliser. We provide everything from feasibility studies to plant design, construction, and operation. Our solutions are based on solid experience with two-phase degradation and composting technologies, and are tailored to the specific needs of managing:

Waste from farms, municipalities, and industries
Source-separated household waste
Wastewater from municipal treatment plants and the food industry
Land-based fish farming facilities with recirculated water

Proven
quality

With the acquisition of BioSystems AB in 2017, Inrigo brings top-notch
competence and more than 45 years of experience with biogas in 38
countries worldwide. BioSystems AB has been a leader in the biogas
industry since 1978, tackling global waste problems in the agriculture,
municipal/domestic, and industrial sectors, addressing both solid and
liquid effluents and associated environmental emissions. By choosing
Inrigo, you’re investing in a proven track record of success and a
commitment to a more sustainable future.

Inrigo delivers solutions with high efficiency and reliability for biogas production.

The plants are customised to utilise resources from sludge, food waste, or other biomaterials. These solutions can be integrated with our wastewater treatment systems.