System-Z: Purification through Two-Stage Biological Decomposition
OM Solar's System-Z operates on the basis of a dual, or two-unit, septic tank. All household wastewater, including toilet waste, undergoes an initial decomposition process in System-Z's anaerobic tank. This decomposition is carried out by oxygen-intolerant microorganisms that digest organic matter.
Once the initial decomposition process is completed, effluent containing the various by-products of that process is then transferred to the aeration tank, where it undergoes oxidization. The bacteria in the aeration tank include unicellular protozoa as well as multicellular organisms such as Cladocera. These different types of organisms collect in the aeration tank's filters in spots that are most suited to their survival and proliferation — the protozoa for the most part favoring darker areas with lower levels of oxygen, and other organisms favoring relatively lighter spots, with higher oxygen density. Filtering here takes place, once again, through bacterial digestion.
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