The Bio-Klenze SOT system is of modular design allowing different configurations of tanks to be installed facilitating larger population usage. Once installed with the Bio-Klenze treatment kit, the unit operates as an aeration treatment system. If required the system can be installed without the treatment kit and will perform as a Septic tank capable of being upgraded at a later date.

• The system is designed on well known wastewater engineering principles in the wastewater field and was tested in accordance with BS 7781, proven to meet the demands of the BS 6297 and the more recent EU harmonised BS EN 12566-3 standard.
• The primary settlement receives all the wastewater from the household providing for settlement of the solids, heavy matter and fine sludge settle on the bottom of the tank and are retained until de-sludged. The lighter matter/ debris floats on the surface forming a crust.
• As wastewater enters the system, the settled clarified liquor is displaced and discharged by gravity into the second tank where it undergoes biological treatment.
• The biological treatment is based on a combined aerobic process of fixed film and suspended floc biological process. These biological processes enable naturally occurring microorganisms to utilise the organic material in the effluent as a food source reducing Biological Oxygen Demand. A source of oxygen is required by the microorganisms to enable consumption of the organic material. This oxygen is provided by aerating the liquid in the biological chamber via a fine bubble diffuser supplied by air from a small blower unit (compressor) located outside the tank.
• Treated effluent is displaced by gravity from the biological chamber into the secondary settlement area, where the treated effluent clarifies itself, letting the humus sludge settle out of the effluent before being discharged into the percolation area in the environment. An airlift mechanism returns this sludge to the primary settlement tank, also protecting against bad odours.
• When certain ground or site conditions prevail a raised percolation area may be required necessitating the treated effluent to be pumped out of the tank.