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DSRSD - UV System Expansion
WBA developed a plan to increase the permitted capacity of the
DSRSD UV system from 1 to 3 mgd. This work was needed to increase
the capacity of the UV and microfiltration (MF) recycled water
treatment facilities to 3 mgd. The permitted capacity of the
UV system was increased by completing hydraulic modifications,
installing additional UV modules, and modifying the control of
the UV system. Fewer modules than anticipated were added because
previous system testing by WBA demonstrated that hydraulic and
UV control modifications would increase the capacity of the UV
system and still achieve the regulated virus reduction. WBA completed
the design of the above modifications, and managed the implementation
of the modifications.
City
of Sunnyvale - UV Disinfection Feasibility Study
WBA evaluated disinfection alternatives to the City of Sunnyvale’s
existing chlorination system. The study included laboratory analyses
of UV disinfectability parameters of the City’s effluent
under various operating conditions, and sizing and cost analysis
for different types of disinfection systems for various combinations
of recycled water production and disinfection for Bay discharge.
The analysis included required UV dosages, system sizing, capital
and operation cost estimates, and discussion of related non-cost
issues.
FSSD – UV
Disinfection Analysis
WBA evaluated UV disinfection alternatives for retrofitting the
Fairfield-Suisun Sewer District’s (FSSD) chlorine contact
tanks. The District was interested in determining the feasibility
of eliminating gaseous chlorine from its treatment process. The
analysis included evaluation of District filtered effluent water
quality at different times of year to allow the District to take
advantage of the elevated ultraviolet transmittance of its effluent.
Three types of UV systems were evaluated to determine the most
cost-effective means of expanding the District’s disinfection
capacity and examine the feasibility of eliminating chlorine
from the treatment process.
The above projects are representative of our experience in this area.
If you
would like additional information on these, or other projects that
we
have completed, please contact us.
For detailed descriptions
of representative projects in our other areas of expertise,
click below on the category you are interested in:
Recycled Water:
Wastewater:
Water Supply:
Specialized
Areas:
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