ARC CO2 6000L Modular CO₂ Scrubber for Shelters: Scientific Overview of Carbon Dioxide Removal in Sealed Protective Facilities
In modern civil defence shelters, bunkers and other protected facilities, maintaining breathable air is one of the primary engineering challenges during extended isolation. While NBC/CBRN filtration systems remove hazardous contaminants entering from outside, they do not eliminate carbon dioxide (CO₂) continuously produced by occupants. For this reason, dedicated CO₂ removal systems—commonly referred to as CO₂ scrubbers—are used as part of comprehensive shelter life-support systems.
The ARC CO2 6000L Modular CO₂ Scrubber for Shelters is designed specifically for this application. According to the manufacturer's published technical documentation, the system is intended for civil defence shelters, bunkers and industrial applications where external fresh air may be unavailable or intentionally isolated. Atmas Group
The Engineering Role of CO₂ Removal
Inside a sealed shelter, occupants continuously consume oxygen and exhale carbon dioxide. Even if oxygen levels remain acceptable, increasing CO₂ concentration can eventually become the limiting factor for safe occupancy.
For this reason, modern protected facilities combine several independent systems:
NBC/CBRN filtration for contaminated outside air;
ventilation equipment;
pressure regulation;
dedicated carbon dioxide removal.
The ARC CO2 6000L belongs to the last category and is designed for continuous air regeneration by reducing carbon dioxide concentration inside enclosed spaces. Atmas Group
System Purpose
According to the official product description, the ARC CO2 6000L is a professional modular carbon dioxide removal system (scrubber) developed for:
civil defence shelters;
bunkers;
industrial protected facilities.
Its purpose is to regenerate indoor air by removing carbon dioxide and supporting longer occupancy in isolated environments where outside air cannot be supplied continuously. Atmas Group
Modular Design
One of the principal engineering characteristics of the ARC CO2 6000L is its modular architecture.
The manufacturer states that replaceable filters can be connected inline in configurations of:
one filter,
two filters,
three filters.
Each filter has a stated CO₂ absorption capacity of more than 6000 litres, allowing the overall system capacity to scale according to project requirements. Atmas Group
This modular approach enables system designers to adapt installations for different shelter sizes and occupancy requirements without changing the overall operating principle.
Air Regeneration Process
The manufacturer describes the ARC CO2 6000L as an air regeneration solution.
Its function is to:
recirculate shelter air,
remove accumulated carbon dioxide,
support maintenance of acceptable indoor air conditions.
The published documentation also states that the system is intended to help remove harmful gases associated with enclosed occupancy, including carbon dioxide (CO₂) and carbon monoxide (CO), thereby extending the time occupants can safely remain inside isolated shelters. Atmas Group
Technical Specifications
The official technical specifications published by the manufacturer include:
Parameter | Specification |
System type | Modular CO₂ scrubber |
Airflow | 190 / 230 / 250 m³/h |
CO₂ absorption capacity | >6000 litres per filter |
Electrical supply | 230 V or 115 V AC (single phase) |
Manual backup | Optional |
These specifications are taken directly from the manufacturer's published documentation. Atmas Group
Application Areas
According to the official product information, the ARC CO2 6000L is designed for use in:
civil defence shelters;
protective bunkers;
industrial protected spaces;
enclosed facilities operating without continuous external air supply.
The manufacturer specifies that such systems are intended for isolated environments where controlling CO₂ concentration is necessary to extend occupancy duration. Atmas Group
Integration with Shelter Systems
The ARC CO2 6000L is intended to operate as one component within a broader shelter environmental control system.
According to the manufacturer, it complements:
shelter ventilation;
air regeneration;
carbon dioxide control.
It is not presented as a replacement for NBC/CBRN filtration systems but as a dedicated subsystem addressing carbon dioxide accumulation generated by occupants. Atmas Group
Operational Advantages Reported by the Manufacturer
The official documentation highlights several engineering characteristics:
modular filter configuration;
scalable installation using one to three filters;
replaceable filtration modules;
professional application in protected facilities;
compatibility with isolated shelter environments;
optional manual backup operation. Atmas Group
Product Information
Detailed product specifications are available on the official product page:
Additional technical information is available from the manufacturer:
Conclusion
The ARC CO2 6000L Modular CO₂ Scrubber is designed as a dedicated carbon dioxide removal system for sealed protective environments. According to the manufacturer, it combines modular scalability, replaceable filtration modules and air regeneration capability to support long-duration occupancy in civil defence shelters, bunkers and other isolated facilities. Its published specifications include airflow options of 190–250 m³/h, a CO₂ absorption capacity exceeding 6000 litres per filter, optional manual backup operation and compatibility with one-, two- or three-filter configurations. Atmas Group
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