Bringing an Advanced Water Purification

Membrane Plant Online

Silicon Valley Advanced Water Purification Center

BAYWORK

NOVEMBER 2015

Silicon Valley Advanced Water Purification Center

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Presentation will cover:

Presentation will cover:

Santa Clara Valley Water District & Water Supply Picture

Monitoring, Lessons and Moving Forward

Silicon Valley Advanced Water Purification Center

County’s Water Resources Manager

• Santa Clara Valley Water District: Providing

Silicon Valley safe, clean water for a healthy life,

environment and economy

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Headquarters in San Jose, California

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Santa Clara Valley Water District Serves:

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2 million people

15 cities

4,700 well owners

13 water retailers

San Francisco Bay Area

Diversified portfolio for a reliable supply

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Imported water Local surface &

groundwater

Conservation Recycled Water

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Water Shortages –Almaden Reservoir, San Jose

Need locally-controlled, drought-proof supply

Silicon Valley Advanced Water Purification Center

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SJ/SC Regional Wastewater

Treatment Facility

SBWR

Transmission

Pump Station

SILICON VALLEY

ADVANCED WATER

PURIFICATION CENTER

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Santa Clara Valley Water District constructed & owns a new recycled water purification facility – completed in early 2014

• 8 million gallons per

day of purified water

• Built in partnership –

Santa Clara Valley

Water District & the

City of San Jose

• Serves Silicon Valley

Silicon Valley Advanced Water Purification Center

0.1 micron

Incoming TDS = 900 ppm 11

MICROFILTRATION

Silicon Valley Advanced Water Purification Center

0.0001 micron

Outgoing TDS= 3-5 ppm 12

REVERSE OSMOSIS

Filtration: Pore Size Matters

(nanometer)

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Silicon Valley Advanced Water Purification Center

Ultraviolet light disinfection 14

Pilot Scale Testing – UV AOP

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Testing for…

– NDMA Destruction

– 1,4-dioxane Destruction

– Trace Pollutant Destruction

– AOP Oxidant Optimization

– Surrogate Analysis

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Silicon Valley Advanced Water Purification Center

Outgoing TDS= 40 ppm

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SCVWD Operators

Large internal candidate pool

Career path mobility & cross-over training opportunities available

SVAWPC operators are T operators

Initial equipment vendor training

On-the-Job Training

Using ISO & QMES SOPs – ISO

9001 & 14001 certified

Consultant developed training videos

Current Training Program

Benefits, Challenges, Lessons

Challenges

Career

ladder

Larger T

license

candidate pool

Benefits

Lessons

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Meeting Permit

The SVAWPC is continuously meeting non-potable performance criteria per the conditions of its operating permit.

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Team

District Units:

North Water Treatment Operations

Water Quality

Communications/Outreach

Groundwater

Laboratory Services

Recycled and Purified Water

Effluent Turbidity Meets Standard

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RO Permeate EC

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UVT Results For RO Permeate

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Monthly reporting to the Regional Board includes: • Daily total coliform bacteria monitoring • Maximum daily coliform reading for previous month • Minimum daily chlorine residual • Daily maximum turbidity • Daily UV compliance determinations, including minimum daily

UV dose. • Summary of operational problems, plant & equipment

breakdowns, diversions to emergency storage or disposal, and all corrective and preventative actions taken (CM & EM Reports) in report

• Records maintained on UV lamp age and replacement.

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Monthly Monitoring & Reporting

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Public tours at the new

facility – increases public

confidence and acceptance

for future potable reuse

Public tours at the new facility – increases public confidence and acceptance for future

potable reuse

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SVAWPC Grand Opening – July 2014

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SVAWPC Open House October 2015

Tasting is trusting

technologies

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Potable Reuse

Indirect Potable

Direct Potable

Percolation Ponds

Injection Wells

Drinking Reservoir

Augmentation

Before Conventional

Drinking WTP

Directly Into

Distribution Line

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Drivers for potable reuse

• Non-potable recycled water

(purple pipe) expansion

insufficient to meet future

needs

• Additional water conservation

efforts insufficient to meet

future needs – need the “wet

stuff”

• Potable reuse identified as

most reliable and cost-effective

option, per the District’s Water

Supply & Infrastructure Master

Plan

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Potable reuse – Multiple locations available

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Future – Direct Potable Reuse Possibility

WTP WTP

WTP

Labor Intense

NWRI – Independent Advisory Panel Meeting – May 29, 2014

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There is no “I” in TEAM !

NWRI – Independent Advisory Panel Meeting – May 29, 2014

Going forward

The highest quality water tomorrow

from the best available

technology today

with the best qualified

operators

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Questions?

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www.purewater4u.org