Household and Commercial wastewater can be treated to three increasing levels of decontamination and safety: Primary, Secondary and Tertiary as described below.
PRIMARY
Primary treatment takes place in a septic tank where insoluble and dense material settles. Having settled for at least 24 hours, primary treated effluent is disposed of to land by way of a subsurface trench or bed.
SECONDARY
Primary treatment can be followed by an aerobic secondary treatment system that removes a large proportion of contaminants before disposal to land. Secondary treatment of effluent also reduces the area required for disposal to land and allows disposal via sub-surface drippers.
- Constructed wetland
- AES passive treatment
- Evapotranspiration
TERTIARY
Following secondary treatment, tertiary treatment may be used to kill harmful pathogens that remain in the effluent. This can be achieved by UV treatment, chlorination or filtration.
Greywater reuse
Laundry, shower, bath, and basin greywater can be separated for reuse as irrigation if desired. This can be achieved by a simple diversion through a greywater filtration system.
Standard Water Reduction Fixtures
View Detail of Standard Water Reduction Fixtures and Features
