Photoionisation works by using UV-light and catalysts and carbon as a filter. The combination ensures that there is no condensation within the system to foul the carbon. This technology being on the market for 20 years, is an effective odor treatment process to mitigate all odors resulting from sewage and sludge treatment. Neutralux is used on the most egregios odor causing locations worldwide. Our treatment units shine equally well in handling both high loads of odor-causing agents (for instance, upwards of several hundred ppm of hydrogen sulfide) as well as odor loads which fluctuate.