The Septech Treatment system is of concrete in structure. Sewerage from the home is gravity feed into the Primary Sewage Tank where the waste undergoes settlement and digestion during a retention period of approximately 48 hours.
The settled wastewater then flows into the Turbojet Unit. This unit is divided into two distinct chambers – submerged contact aeration (SCA) tank and Humus Tank. During regular time clock intervals, water and air is pumped into the SCA tank by means of strategically placed jets. The jets are positioned so as to cause vigorous turbulence of the tank contents. Effluent entering the SCA chamber is forced into a spiralling flow pattern. A biomass develops within the sludge particles tumbling through the tank. This biomass assimilates nutrients and oxygen from the water leading to gradual reduction of impurities as the effluent passes through the tank (retention period of approximately 48 hours).
Treated effluent then overflows to the pump tank where it is then automatically pumped to a designated irrigation system.