Transforming WWTPs to Regional Resource Recovery Centers: …€¦ · (Solar, Wind, Tidal) From SF Bay Brine from SWRO Potable Water Wastewater Recycled Water Sludge Fuel Cell H2O

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Transforming WWTPs to Regional Transforming WWTPs to Regional Resource Recovery Centers:Resource Recovery Centers:

Dawn Lesley, PEKennedy/Jenks Consultants

June 28, 2011

APWA Sustainability in Public Works Conference:

Portland Oregon

Barriers and Opportunities

Presentation OverviewPresentation Overview

� A Vision:Regional Resource Recovery Centers of the Future

� Resources to Recover� Water

� Energy

� Nutrients

� Carbon

� Space

� Infrastructure

� Skilled staff

� Barriers & Opportunities

Once upon a time . . . . Once upon a time . . . .

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WPCF WPCF –– Inputs and OutputsInputs and Outputs

WPCF Opportunities WPCF Opportunities –– Recycled WaterRecycled WaterWPCF Opportunities WPCF Opportunities –– EnergyEnergyWPCF Opportunities WPCF Opportunities –– BiosolidsBiosolidsWPCF WPCF –– Inputs and OutputsInputs and Outputs

Concept Water Cycle for Concept Water Cycle for AlcatrazAlcatraz

SWRO

PotableUse

MBR

Wash down Water

ToiletFlushing

Fire Protection

Storage

Irrigation

Dewatering Hauling to Mainland

Renewable Energy(Solar, Wind, Tidal)

Fro

m S

F B

ay

Brine from SWRO

Potable Water Wastewater

RecycledWater Sludge

FuelCell

H2O

AnaerobicDigestionOverflow

To Bay

For use at other GGNRA Facilities as Fertilizer

Met

han

e G

as

Energy

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Water from the skyWater from the sky

Water from townWater from town

Klamath Cogeneration Plant, Klamath Falls, Oregon, IberdrolaRenewables

Las Vegas Regional Animal Campus, Las Vegas, NV, Tidal Flow Wetland Living Machine®

EnergyEnergy

� In the wastewater� Heat

� Chemical bonds – COD/BOD

� Head� Coming to the plant� Discharging from the plant

� Site sources� Solar – footprint-specific, can be harvested

with solar PV, solar thermal, algae� Geothermal

� Wind

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Energy from Wastewater HeatEnergy from Wastewater Heat

Waste heat recovered in these heat pumps provides 60% of annual district heating of Okanagan College campus buildings.

$1.5 million capital cost, 15-year payback.

Okanagan College, Kelowna, BC, Canada, Heat Pumps

Existing DigestersExisting Digesters

BiosolidsBiosolids

Energy from COD/BOD Energy from COD/BOD ––Existing CogenerationExisting Cogeneration

Primary andPrimary and

Secondary SolidsSecondary Solids

CogenCogen

Biogas

75%75% 25%25%

FlareFlare

Existing DigestersExisting Digesters

BiosolidsBiosolids

Augmenting Energy from COD/BOD Augmenting Energy from COD/BOD ––Cogeneration, FOG, Food WasteCogeneration, FOG, Food Waste

Primary andPrimary and

Secondary SolidsSecondary Solids

CogenCogen

New DigesterNew Digester

Biogas

CogenCogenFood Food WasteWaste

FOGFOG

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Energy from head Energy from head –– HydroHydro

Existing:Falling water = Splashing + Foam + Water Hammer

Revised:Falling water = Electricity + $$

Energy from head Energy from head –– MicrohydroMicrohydro

Energy from the sun Energy from the sun –– Solar PVSolar PV

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WindWind

Browning MTFour 10-kW

Late 199925% of WWTP electricity

Atlantic County NJDecember 2005Five 1.5-MW

Nutrients Nutrients -- NitrogenNitrogen

Photo credit: NW Biosolids Management Association

Photo credit: Portland BES/Madison Farms

Nutrients Nutrients -- PhosphorusPhosphorus

� Clean Water Services, Durham Advanced WW Treatment Facility, Tualatin, OR

� Hampton Roads Sanitation District, Nansemond Treatment Plant, Chesapeake Bay watershed, Suffolk, VA

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Other WW ConstituentsOther WW Constituents

� Metals – Gheen Irrigation, Eugene OR. Manufactures irrigation parts. Recovers zinc from hot-dip galvanizing process, sells it to zinc recycler.

� CECs?

CarbonCarbon

� Improves soil tilth � Other uses?

Photo credit: City of Lincoln, NE

graphiteBuckminsterfullerene

nanotube diamond

Space / LandSpace / Land

� Land for terrestrial solar panel installations and/or wind turbines

� Lagoons – grow algae? Solar panels?

� Habitat –constructed wetland?

� Other uses? –trails/interpretive?

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Kontich, Belgium

1.2 million tomatoes

1 million eggplants per year

10 acres

Heated by CHP

Natural Treatment SystemsNatural Treatment SystemsMultiple BenefitsMultiple Benefits

•Water Storage & Delay

•Sediment Retention &

Stabilization

•Phosphorus Retention

•Thermoregulation

•NO3 Removal & Retention

•Carbon Sequestration

•Organic Matter Export

•Native Plant Diversity

•Habitat:

•Aquatic Invertebrates

•Non-anadromous Fish

•Amphibians & Reptiles

•Waterfowl

•Songbird, Raptor, &

Mammal

•Pollinators

InfrastructureInfrastructure

� Digester capacity

� Laboratory

� Meeting space

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Pierce County, WAPierce County, WA

� LEED™ Silver

� Meeting rooms available to the community to rent fo r meetings and events

LOTT Alliance, Olympia WALOTT Alliance, Olympia WA

LEED™ PlatinumMiller-Hull

Skilled StaffSkilled Staff

� Laboratory analyses

� Community education

� Industrial pretreatment ‘consulting’?

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Barriers/Opportunities (1)Barriers/Opportunities (1)

� Renewable Energy� Low cost of electricity

� Ability to aggregate meters, limits to aggregation

� FOG and Food Waste� Landfills vs. POTWs

� Who invests in the infrastructure?

� Role for haulers

Barriers/Opportunities (2)Barriers/Opportunities (2)

� Recycled Water� Public perception challenge

� Regionalization� Public vs. private

� Hatfield County vs. the City of McCoy

� Cost Barrier – tunneling through?

Barriers/Opportunities (3)Barriers/Opportunities (3)

� Regulatory� Political� Community engagement

� Valuing of services

� Non-conducive, historical siting� No industry ‘across the fence’

� Crosses multiple disciplines / departments� Difficult to plan and manage� Chance for “cross-talk” and synergy of actions

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“Sustainability takes forever.“Sustainability takes forever.And that’s the point.”And that’s the point.”

William McDonough, FAIA

Contact InformationContact Information

� Dawn Lesley� [email protected]� 541-338-8135