＊We regret to inform that we have stopped producing and selling the water purification system "System Z."

OM Solar's System-Z Water Purification System
for total household wastewater treatment

Bacteria-based water treatment systems for household use have an almost 30-year track record, but the majority of them have been custom-designed and site-fabricated for individual clients.

OM Solar's System-Z, which also uses bacteria as the cleansing agent, has, on the other hand, been developed for mass production. Treatment with this system enables wastewater to reach a biochemical oxygen demand (BOD) index value of 1 to 5 milligrams per liter (1 to 5 ppm) prior to discharge.

A Combined Septic Tank System
System-Z features a dual septic tank set-up that operates as follows.

The Anaerobic Tank [ 1, 2 ]
All household wastewater (including toilet waste) flows into an anaerobic tank containing oxygen-intolerant bacteria. The bacteria immediately set about consuming the sugar compounds called saccharides as well as the textured vegetable proteins that are in the wastewater, a denitrification process which causes the saccharides and proteins to decompose into ammonia and other organic substances. This anaerobic bacterial digestion results, finally, in the production of nitrogen gas, water and hydroxide ions.

The Aeration Tank [ 3, 4 ]
Oxygen is continuously supplied to the system's aeration tank by means of a blower. This tank contains oxygen-tolerant bacteria that attack the organic substances remaining in the wastewater transferred from the anaerobic tank after "processing" there by the oxygen-intolerant bacteria. In the aeration tank, decomposition and then filtering result in effluent that can be recycled for certain household uses, or discharged into the municipal drainage system.

Filtering Materials
System-Z uses special filtering materials in the filters located in its two septic tanks. These filters also house bacterial colonies through which treated wastewater undergoes a final purification process before being discharged.

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