Biosolids Recycling
ACP Compost Solutions Workshop
UC Riverside Extension
February 28, 2007
Biosolids Processing
Digestion
Dewatering
End Use
Conveyance
System
Cake
Storage
History of Biosolids Management
1980’s
1990’s
Class B
Land Application
2000’s
Class A
Board Resolution 02-18

Recycling

Compliance with EPA

Environmental Management
System (EMS)

Member agencies use material

Sensitive to local communities
SWRCB General Order
“…the beneficial use of biosolids through
land application under this General Order
is environmentally sound and preferable
to non-beneficial disposal.”
Class B Biosolids Land Application
County Bans are Spreading
1999
Present
Regulatory Setting
Federal
Local District
and County
State
February 15, 2005
The Bakersfield Californian
Sludge Report: Supervisors Still At It
Board asks county lawyers to look into ban…
News 17 KGET
February 17, 2005
Lawsuit Challenges Kern’s Biosolids Law
February 19, 2005
The Bakersfield Californian
Welcome to Kern, Toilet of California
March 1, 2005
The Bakersfield Californian
Mired in Protest: Passionate residents speak
at meeting against sewage site
Public Outrage!
California didn’t want it! We don’t want it!
We don’t want the flies! We don’t want the stench!
WE DON’T WANT IT!
How Do We Develop
a Sustainable Program?
Public Perception
Option Uncertainty
Regulatory
Changes
Price Instability
Amount
of
Biosolids
Increasing
Recycling
Class B Options
Decreasing
Elements of a Long-Term
Biosolids Management Plan
Treatment
Improvements
Vendors &
Product
Technologies
Markets
19 Markets Evaluated
11 Cropping
8 Non-Crop
Top 6 Long-Term Markets
Retail Outlets
OCSD Member
Cities & Agencies
(open space)
Nurseries and
Ornamentals
Shade Tree
Programs
Construction
Materials
Energy
Production
Horticulture – Retail Bags
Retail Outlets

Market Size:
200 tons per day

Exercise Caution Not
to Saturate Market

Good Public Acceptance

Product:
compost or pellets
Horticulture – Nurseries
& Ornamentals
Nurseries and
Ornamentals

Market Size:
195 tons per day

Exercise Caution Not
to Saturate Market

Many Marketplaces,
Long-Standing Industry

Product:
compost or pellets
Horticulture – OCSD’s Member
Agencies for Landscapes
OCSD Member
Cities and Agencies
(open space)

Market Size:
28 tons per day

14% OCSD’s Daily
Production

Important PR to Use
Biosolids Locally

Product:
compost or pellets
Silviculture – Shade Tree
Programs
Shade Tree
Programs

Market Size:
very small (½ ton per day)

Market Untapped

Important PR to Use
Biosolids Locally

Product:
compost or pellets
Construction Materials
Construction
Materials

Market Size:
very large
(560+ tons per day)

Market Untapped

Existing Soil Recovery
Facilities in So. Cal.

Product:
soil fill material
Direct Energy Production
Direct Energy
Production

Market Size:
unlimited

Existing Mothballed
Biomass Plants in
Central Valley

California Green Power

Product:
chars / pellets / power
13 Product Technologies
Evaluated
Top 6 Product Technologies
Composting
Organo-Mineral
Fertilizer
Heat
Treatment
Heat Drying
Pyrolysis
Power Generation
(pellets)
(creating fuel
products)
(at existing biomass
power plants)
Product–Market Integration
Retail Outlets
Nurseries & Ornamentals
Member Agencies
(landscape)
Shade Tree Programs
Construction Materials
Energy Production
Composting
Pellets










Fills / Soils
Chars
Electricity



Long-Term Sustainability
= Diversification
Multiple Technologies  Multiple Products / Markets
Multiple Contractors  Failsafe Options
Class B Transition Strategy
to Higher-End Products
Biosolids Advisory Committee

Examine various implementation
proposals

Make a recommendation to the Board

Effectively represent the entire community

Deliver a report
upon completion

Over 1,000 hours
spent
Option 1:
Invest in High End Products

Higher Cost
 Reuse
 In-County Options
 Sustainability
Biosolids
Management
Plan
Option 2:
Continue Current Practices,
and Utilize Landfills

Low Cost
 Non-Reuse
 Higher Risk
Multiple Options = Diversification
= Long-Term Sustainability
Production Sites
Markets
Vendors

Limit 33%
total any one
facility

Max 50% total
production
to any vendor

Max 50% total
production
to a market

Up to 50%
peak capacity

50% temp
provisions
with each
vendor

Up to 50%
backup
alternative
markets
100% Failsafe Backup Option
Orange County Sanitation District
www.ocsd.com
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Biosolids Overview, LTBMP