Page 33 - Green Builder May-June 2017 Issue
P. 33
How NORM Works
CREDIT: GBD ARCHITECTS
CREDIT: BIOHABITATS
1. Wastewater is collected 5. Carbon-rich wood chips 9. The treated water is
in tanks for each of the support the removal stored in a reuse tank.
three buildings. of nitrates from the
wastewater. 10. Treated water is used
2. An anaerobic process to flush toilets, irrigate
breaks down organic 6. Nitrate is converted to landscaping and supply
matter; solids are nitrogen gas, which the cooling tower.
separated from the evaporates into the
liquid portion. atmosphere. 11. Any extra treated water
is used to recharge
3. Wastewater flows over 7. A second set of tidal groundwater.
media coated with wetlands “polishes” the
bacteria, which consume wastewater, removing any
nutrients in the effluent. remaining nutrients.
4. In the first set of tidal 8. Microfiltration, ozone
wetlands, plant roots treatment and UV
and bacteria on the gravel disinfection improve
take up nutrients from clarity and kill pathogens.
the wastewater.
www.greenbuildermedia.com May/June 2017 GREEN BUILDER 31
28-33 GB 0517 Hassalo on 8th.indd 31 5/25/17 11:08 AM
