abc’s of water presentation basin desalter authority (cda) existing operation cda purifies...

ABC’s of Water PresentationMay 23, 2017

Curtis Paxton (GM/CEO)

Curtis Paxton

Chino Basin Desalter Authority (CDA)

What is Desalination?

Water desalination processes separate dissolved salts and other minerals from water.

Reverse Osmosis (RO) treatment is one of the most common methods of desalination.

RO treatment is a way to get clean water out of dirty water or salt water by forcing water under pressure through a membrane.

The process is energy intensive and the high cost of the required energy is the primary reason it is not currently used more in the US.


Ocean Water Desalination

Salinity measured as Total Dissolved Solids (TDS) is approximately 35,000 mg/l

Brackish Water Desalination

Total Dissolved Solids (TDS) is 500 – 2,000 mg/l


Ocean Water Desalination

Carlsbad: 56,000 afy desal plant owned/operated by Poseidon is in operation (www.carlsbaddesal.com)

There are at least 13 plants under consideration in California that would produce up to 257,000 afy

Southern California: Huntington Beach, Dana Point, Long Beach, South Bay


Joint Powers Authority created in 2001

8 member agencies

City of Chino

City of Chino Hills

City of Norco

City of Ontario

Jurupa Community Services District

Santa Ana River Water Company

Western Municipal Water District

Inland Empire Utilities Agency


Existing OperationCDA purifies brackish water extracted from the lower Chino Basin with the Chino I and II Desalter facilities and distributes drinking water to its member agencies.

Primary contaminants in the brackish water treated by CDAinclude nitrate, total dissolved solids (TDS), and volatile organic chemicals (VOCs).

Nitrate and TDS contamination a result of agricultural and dairy operations in the southern portion of the Chino Basin.

A primary reason for the desalters is to lower the groundwater level and prevent contaminated water from entering the Santa Ana River and flowing to Orange County (Hydraulic Control)


Existing Operation

Groundwater Production: 29,000 Acre Feet/Year

22 Wells

Treated Water: 24,600 Acre Feet/Year

Two Desalters (22 million gallons/day (mgd) capacity):

Chino I – Constructed by SAWPA (2000):

Reverse Osmosis/Ion Exchange/Air Stripping

Chino II (2006):

Reverse Osmosis/Ion Exchange

Reverse Osmosis (TDS & Nitrate removal)

Ion Exchange (Nitrate removal)

Air Stripping (VOC removal)


Existing Operation

Member agencies purchase water from CDA under take-or-pay agreements

Cost of water ≈ $900/AF

Includes debt service of $300/AF

Excludes groundwater replenishment cost of $668/AF

Local Resource Program (LRP) rebate available through an agreement with Metropolitan Water District ($109 per acre-foot)


Water Quality

Chino I Chino II

Raw Water Nitrate (mg/l) 225 80

Product Water Nitrate (mg/l) 15 20

Raw Water TDS (mg/l) 1000 600

Product Water TDS (mg/l) 325 345


Existing Operation

Brine Disposal: SAWPA Inland Empire Brine Line (IEBL)

Exports ~ 23,000 tons of salt annually from Chino Basin

Chino I: One connection to Brine Line

2 million gallons per day (mgd)

Total Dissolved Solids (TDS): 6,000 mg/l

Chino II: Two connections to Brine Line

1.2 million gallons per day (mgd)

TDS (RO Brine): 3,000 mg/l

TDS (IX Brine): 14,000 mg/l


Existing Operation

Brine Line charges are second largest component of O&M budget (behind electricity)

Feasible Brine Line Alternatives: None

Unable to send brine to upstream wastewater plants

Trucking Option: Chino I would require 400 trucks per day

Trucking Option: Chino II would require 240 trucks per day

The Brine Line is a critical element for the operation of the Desalters.


Phase 3 Expansion Project

Investment of $150 Million

Sponsor Agencies: City of Ontario, Jurupa CSD, Western MWD

Increase Groundwater Production to 40,000 AF/Year

Increase Treated Water to 35,200 AF/Year

Eight new wells and raw water pipelines deliver groundwater to treatment plants


Phase 3 Expansion Project

Product water pump stations and pipelines deliver treated water

Innovative Brine Treatment – Concentrate Reduction Facility (CRF) at Chino II Desalter

Substantial Completion Anticipated June of 2017


Phase 3 Expansion Project – New Wells


Concentrate Reduction Facility ($46 Million)

Calcium carbonate pellets generated – convert a waste product into a usable commodity

Water run through secondary RO process

Increase total water recovery from 83 percent to 95 percent


Concentrate Reduction Facility Pellet Reactors


Concentrate Reduction Facility Construction

Concentrate Reduction Facility

DYT Well

I-16

I-17

I-21I-20

Chino I

Pending Award

In Progress

Complete

16-18 Well Equipping

Raw Water Pipeline

WELLS I-18

Milliken Pump Station Construction

Chino II

Chino II to Riverside/ Hamner Ave. Product

Water Pipeline Construction

Chino II HVAC/Pump

Stations Construction

Project Construction Management

20 & 21 Well Equipping - Construction

Chino Desalter Phase 3 Expansion

Project

Well 18 Treatment Pilot Study

Future Project

Chino II Raw Water Pipeline - Design

Well Lot A Well

Raw Water Intertie Pipeline and Flow

Control Facility - Design

Chino II Expansion

Concentrate Reduction Facility

Construction

Chino II Wells Drilling – Pending Award (2

Wells)

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Concentrate Reduction Facility (CRF) Goals

Sustainability• Create beneficial byproduct

• Reduce basin water export

• Reduce brine line impacts

Water Supply • Provide additional potable supply

• Reduce groundwater pumping

• Find a cost effective option

• Utilize grant funding

• Offset O&M costs with product

Cost

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The CRF Allows the CDA to Meet All of the

Chino Phase 3 Expansion Goals

Sustainability

• 90 percent of the solid residuals

produced have a defined

beneficial reuse application

• Up to 1.6 to 2-mgd of water

remains in the Chino Basin

instead of going to the ocean

• Scale forming compounds are

removed in the process instead

of in the brine line

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Water Supply • 1.6 to 2-mgd of new water

supply developed for the CDA

• New groundwater withdrawals

reduced by 2 to 2.4-mgd



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Cost • CRF implementation increases

overall CDA O&M costs by less

than 10 percent.

• Greater than 50% funding of

project by grants

• Market value of pellets offsets a

portion of the O&M costs




Capital $ Grant $

Chino I/II: $153 Million $48 Million

Phase 3 Expansion: $150 Million $85 Million

Total = $303 Million $133 Million


South Archibald Plume Project


In Closing . . . a couple of my favorite quotes:

“If you find yourself in a hole, stop digging” ~ Will Rogers

. . . . . and


“Never miss a good chance to shut up”

~ Will Rogers


QUESTIONS ?

abc’s of water presentation basin desalter authority (cda) existing operation cda purifies...

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