CO2/CO Removal Systems - Scrubbers

CO2 removal systems (scrubbers) are air regenerative systems that can “scrub” the air - removing harmful gases such as CO (carbon monoxide) and CO2 (carbon dioxide) and allowing longer stay time for people inside the shelters or any enclosed spaces.

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CO2 scrubbers usually required in shelters which are completely or partially isolated from external environment (lockup mode). This type of shelter is more common in special applications, strategic facilities and shelters located in areas where potentially the safe external air supply may be not possible in time of emergency. Some of the reasons for insufficient fresh air supply can be high concentration of toxic industrial chemicals, fires which create heat, smoke and lack of oxygen and high levels of carbon monoxide, floods which can block the air supply and other factors.
The main difference in this type of autonomous shelter is that the air management is performed by the closed circle of air regeneration systems. In this case the CBRN air filtration system is not required, and the air regeneration is made by the following systems. Because of lack of fresh air supply and constant air exchanges in the shelter the levels of carbon dioxide (CO2) and oxygen (O2) must be controlled and maintained in the safe range. In addition, the overpressure which is required for preventing contamination entering the shelter needs to be maintained by adding compressed or filtered air.