Membrane and Desalination Technologies - TCE Moodle Website

Treatment of Industrial Effluents, Municipal Wastes, and Potable Water 231
Johns Creek Environmental Campus in Fulton County, Georgia, USA, installed a 56,780
m 3 /d (15 MGD) MBR wastewater reclamation plant in 2009 (79). This new facility not
only houses a water reuse plant, but also features an educational center to promote the
environmental and economic benefits of water reuse in Georgia. The small footprint and
modular design of the plant allows the entire aerobic biological treatment process and
ancillary equipment to be completely contained within the building. With the WWTP
being in close proximity to a residential area, this would eliminate any possible noise or
odor concerns. The typical treated water quality results are BOD less than 2 mg/L; TSS less
than 2 mg/L; and turbidity less than 0.1 NTU.
Corona Wastewater Treatment Plant, in Corona, CA, USA, was built in December 2001
with a 3,785 m 3 /d (1 MGD) design capacity. The plant which incorporated reinforced,
immersed membranes for biological and physical treatment meets California Title 22 discharge
criteria for water reuse (80). The MBR system has been designed to meet the
following discharge criteria: BOD below 5 mg/L; total inorganic nitrogen below 10 mg/L;
total suspended solids below 5 mg/L; and turbidity below 0.2 NTU. The effluent from the
plant is suitable for reuse on a nearby golf course for landscape irrigation, or can be safely
discharged to a local creek bed.
The Brighwater Treatment Plant in Woodinville, King County, Washington, USA, will use
an advanced MBR technology system instead of the bulky settling tanks used in conventional
WWTPs (70). The plant is being designed to meet or exceed stringent water quality standards
for effluent discharge or reclaimed water production. Specifically, the plant effluent will be
equivalent to Class A Reclaimed Water, meeting the strict standards of the State of Washington
Departments of Ecology and Health for use in nondrinking purposes including landscape
and agricultural irrigation, heating and cooling, and industrial processing as well as safe
discharges into freshwater. The flow diagram of the complete Brighwater Treatment Plant,
shown in Fig. 5.10, includes the following liquid treatment processes: preliminary treatment
(influent pump station, chemical addition, bar screen, and grit separation), primary treatment
(primary sedimentation tank and fine screening), membrane treatment (bioreactor and
Fig. 5.10. Flow diagram of Pennant Hills brightwater wastewater plant using MBR technology.