This prominent Houston Hospital has six large holding tanks for sewage. Sewage is lifted into the sanitary municipal waste water system by ejector pit pumps.

The contaminated and foul air was flowing from the large sewer pit room into the basement and picked up by various return ducts, and consequentially circulating into the main hospital ventilation system.

The air contained hydrogen sulfide, mercaptans, and methane, and the humidity was quite high.


AtmosAir was contracted to solve the problem through bipolar ionization and negatively pressurizing the pit room slightly. AtmosAir used 3 units, which allowed pit room air to be cleaned and recycled.


The treatment was successful and has been in operation for over five years.