producing high quality biosolids by going low, cost low techoriginal design criteria design present...
TRANSCRIPT
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Producing High Quality Biosolids by going Low, Cost –
Low Tech:
The Story of a Small Treatment Plant that’s Looking Back to find its Future
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Presented by Mark Bowman, ManagerGogebic-Iron Wastewater Authority
MWEA Biosolids ConferenceMarch 13-14, 2018
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The Gogebic-Iron Wastewater AuthorityIronwood, MI
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Members:• 73% City of Ironwood, MI• 21% City of Hurley, WI• 9.3% Charter Township of Ironwood, MI
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Service Area7 Square Miles
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Gogebic-Iron Wastewater Authority
• 1977 Facilities Plan•Excessive Wet Weather Flow•Recommended Hurley form a regions Treatment System
with Ironwood•1979 Force main installed and the City of Hurley became a
user of the Treatment System
• 1983 Authority formed•City of Ironwood , City of Hurley, Ironwood Township
• 1986 Construction of New Treatment Plant Completed•$11,000,000 Plant, $10,000 Sewer = $21,000,000 Total
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Capacity PerspectiveOriginal Design Criteria
Design Present
•Population 12,390 ~7,000
•Average Flow 3.4 MGD 1.2 MDG
•Peak Hourly Flow 8.5MGD 20 MGD
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Timeline of Journey to the GIWA's LCLT Project
AWARNESS OF NEED
N-VIRO
SLUDGE MANAGEMENT PLAN,
MCM
TPAD STUDY MASTER PLAN
MTU PARNERSHIP
CHP
MTU SENIOR DESIGN
MTU SENIOR DESIGN
SAW START
SAW END
CONTINUOUS IMPROVEMENT
Research of Management Options
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The Divers and Influences
•Financial•Unutilized Assets•Limitations to Residual Management Plan•Regulations•Biosolids Characteristics•Partnerships•Stupidity
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Drivers and Influences - Financial
•Overbuilt Treatment Capacity and population decline result in high user rates•Treatment plant runs at 35% of loading capacity•Wet Weather Flow Excessive
Population
Design Present
12,390 ~7,000
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Drivers and Influences – Collection System
Original sewer separation project in early 1980’s inadequate
All the I/I Studies and corrective work completed in the last 32 years have yet to eliminate excessive flows during wet weather events.
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Unutilized Assets
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The Divers and Influences – Limitations to RMP
Climate•Long Winters•Short, Cool Growing Season
Available Land Application Sites•Volume of Farmland Acreage Low•Small Application Sites
Some years Zero biosolids were able to be land applied
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They Don’t call us “Big Snow Country” for NothingSnow•Ironwood: 7.0 months, mid-October through mid-May•Lansing: 4.9 months, mid-November through mid- April.
Snowless•Ironwood: 5.0 months, mid-May through mid-October•Lansing: 7.1 months, mid-April through mid-November
Snowfall•Ironwood: 176 Inches •Lansing: 45 inches
Short Season to Apply Biosolids•Ironwood: 3.9 months (119 days), from May 26 to September 22•Lansing: 5.6 months (170 days), from April 25 to October 12
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Climatic Conditions
The climate of the Gogebic County area is one of short, cool summers with
long, cold winters. On average, the first date of temperature below 32 degrees
Fahrenheit can take place anywhere from late August in the eastern part of the County to
late September or early October in the western area along Lake Superior. The average date
for the last freezing temperature in spring can take place from May in the western area
along Lake Superior to early June in the eastern interior.
Warmest Month July
Avg. Maximum Temperature (o F) 76.1
Avg. Minimum Temperature (o F) 55.5
Coldest Month January
Avg. Maximum Temperature (o F) 20.3
Avg. Minimum Temperature (o F) 2.9
Days Above 90o F 1.1
Days Below 0o F 38
Average Annual Precipitation (in.) 34.93
Average Annual Snowfall (in.) 188.2
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Snow is Measured in Feet – 28’ or 390 inches170” Average in Ironwood
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188 Inch Average…
…300 inches is
not Unusual
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IronwoodZone 4a
May 15 to August 31
119 day Growing Season
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SISI Ski Fest
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Annual Bikini Races and Copper Peak, a 40 ski flying jump
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• https://www.jsonline.com/videos/sports/2018/01/19/red-bull-400-trailer/109604598/
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Pulling Snow from Biosolids Cake Storage Building
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Published 1994
I should write a letter to the
Board, this reads like an
Opportunity
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New Part 503 Regs present opportunities obtain a EQS designation.
• Monitor Pathogens to confirm Fecal Reduction.
• Petition regulators to allow experimentation
• Develop Public demonstration plots• EQS Production Trials• Seek Funding
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Timeline of Journey to the GIWA's LCLT Project
AWARNESS OF NEED
N-VIRO
SLUDGE MANAGEMENT PLAN,
MCM
TPAD STUDY MASTER PLAN
MTU PARNERSHIP
CHP
MTU SENIOR DESIGN
MTU SENIOR DESIGN
SAW START
SAW END
CONTINUOUS IMPROVEMENT
Research of Management Options
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Biosolids freeze solid over winter and may not thaw
until mid-June.
Land applications compete with farmers
and weather
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1995 Sludge Management PlanFly Ash/Alkaline Addition/Accelerated Drying
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Technology Rejected:• Emerging in 1995• High Odors• Material Handling• Annual License Fees• High O&M• History of Project Failures
1995 Sludge Management PlanFly Ash/Alkaline Addition/Accelerated Drying
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Timeline of Journey to the GIWA's LCLT Project
AWARNESS OF NEED
N-VIRO
SLUDGE MANAGEMENT PLAN,
MCM
TPAD STUDY MASTER PLAN
MTU PARNERSHIP
CHP
MTU SENIOR DESIGN
MTU SENIOR DESIGN
SAW START
SAW END
CONTINUOUS IMPROVEMENT
Research of Management Options
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1995 Sludge Management PlanMcMahon and Associates
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Do nothing option, most cost effective but does not address:• Freezing of sludge in Winter• Limited time to apply• Site distance• Availability of suitable acreage• Administrative overhead
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1995 Sludge Management PlanMcMahon and Associates
Fly Ash Option• Did not solve freezing issue• Did not solve availability of
agricultural sites for land application.
• Odors issued difficult and expensive.
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1995 Sludge Management PlanMcMahon and Associates
ATAD Option• Arose since 1995 Plan.• Innovative Class A• 18% increase in VSD and gas
production.• Odors comparable to mesophilic.• Fits within GIWA’s configuration.
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Footnote to this chapter;
Shortly after the GIWA gave up on TPAD, the method went on to become a successful treatment process.
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Timeline of Journey to the GIWA's LCLT Project
AWARNESS OF NEED
N-VIRO
SLUDGE MANAGEMENT PLAN,
MCM
TPAD STUDY MASTER PLAN
MTU PARNERSHIP
CHP
MTU SENIOR DESIGN
MTU SENIOR DESIGN
SAW START
SAW END
CONTINUOUS IMPROVEMENT
Research of Management Options
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Partnership with MTU
•March 2011 District Heating
•December 2011 Contacted Dr. Hand
• Introduction to Dr. Seagren
•Winter 2011 -Student Design Project, Freeze/Thaw Experiments
• 2012 Learned of Two Summer Method
•May MTU/GIWA Presentation at MWEA Section 21 U.P. Wastewater Operator Conference
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Partnership with MTU Cont.
• 2013 Intensified research into Low-Cost, Low-Tech SPTs (Sludge Processing Trains).
• 2012/13 The GIWA subscribes to WE&RF
•October 2013 Funding Applications:•NSF by MTU•SAW-IT Grant by GIWA
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Development of a Sustainable Process for
Class A Biosolids Production at Gogebic-
Iron Wastewater Authority
Christa Meingast, Mark Bowman,
Jennifer G. Becker, and
Eric A. Seagren 39
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Outline
• Introduction
• Motivation
• Wastewater Treatment Facilities
• Reviewed PFRP’s
• Composting Trials
• Freeze/Thaw Lab Testing
• Conclusions
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Christa and Superintendent Ron Groth walking up to
the ATAD Reactor
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100% public distribution.
public love it.
Zero land application program.
Easy, simple & low tech.
My heroes
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Drying Piles Showing Evidence of CompostingLight and dark colors shows transition from anaerobic to aerobic microbial activity
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Aerobic outer layer
Anaerobic Inner layer
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Test Compost Pile
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Field Composting Experiments
Figure 1: Maximum Daily Temperature in Compost Pile for Trial 1
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10
20
30
40
50
60
0 1 2 3 4 5 6 7 8 9 10
Tem
pe
ratu
re (
De
gre
es
C)
Time (days)
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Field Composting Experiments
• Solutions to Composting Trial 1 problems
– Higher windrow and less turning
• Keep in moisture and heat
– Volatile solids between 45% to 50%
– Total Solids between 45% and 55%
– Composted Sludge Mixed with Cake Sludge
– Location of Storage Building
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Field Composting Experiments
Figure 2: Maximum Daily Temperature in Compost Pile for Trial 2
0
10
20
30
40
50
60
0 2 4 6 8 10 12
Tem
pe
ratu
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de
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Time (days)
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Timeline of Journey to the GIWA's LCLT Project
AWARNESS OF NEED
N-VIRO
SLUDGE MANAGEMENT PLAN,
MCM
TPAD STUDY MASTER PLAN
MTU PARNERSHIP
CHP
MTU SENIOR DESIGN
MTU SENIOR DESIGN
SAW START
SAW END
CONTINUOUS IMPROVEMENT
Research of Management Options
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Student Design Sponsorship
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Purpose:Evaluate alternatives to provide the GIWA with a pathway that develops Low-cost, Low Tech sustainable sludge treatment and management options
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2014 Senior Design Projects Teams
•ABCK Consulting
•DESM Engineering
•PACS
•Sustainable Biosolids Solution
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Analysis, Design, and Recommendations for Achieving Class A Biosolids For the Gogebic-Iron Wastewater Authority Treatment PlantKeith Anderson, Justen Kosmowski, Ryan Leveille, Jonathan Witham
Text References: Metcalf, and Eddy. (2003). Treatment, Reuse, and Disposal of Solids and Biosolids. Wastewater Engineering Treatment and Reuse. 4th ed. New York, NY: McGraw Hill Company, Inc. 4, 1460-1465. United
States Environmental Protection Agency (U.S. EPA). (1993). “Title 40 of the Code of Federal Regulations, Part 503.” Washington, D.C. Figure References: Location and Plant Layout: Google Maps; Fuchs ATAD:
http://www.isma.fr/en_pure-solutions.html; ATAD Components: http://www.fuchs-germany.com/en/sewage-sludge/case-studies/autoheated-thermophilic-aerobic-digestion-atad/example-from-poland/
Acknowledgements: The authors would like to thank our client Mr. Mark Bowman, manager of the Gogebic-Iron Wastewater Authority for his information and recommendations as we prepared our design. We would
also like to thank Dr. Eric Seagren and Dr. Jennifer Becker of the Department of Civil and Environmental Engineering at Michigan Tech, for their insight and guidance during the course of this project.
The Client
Plant Authority: Gogebic-Iron Wastewater Authority (GIWA)
Plant Manager: Mark Bowman
Location: Ironwood, Michigan
ProblemGIWA is currently achieving Class B biosolids, but because of site restrictions for Class B, would like to upgrade to a process for achieving Class A biosolids.
ObjectiveDesign and recommend a process for achieving Class Abiosoilds that utilizes existing facilities.
ScopeTwo alternatives for achieving Class A were considered: the seven PFRPs and four low-cost, low-technology processes.
Applicable Regulation: Title 40 CFR Part 503
Class A biosolids Class B biosolids
Pathogen Levels Non-detectable Low
Vector Attraction Reduction (VAR)
Complete 1 Option for VAR
Site Restrictions and Management Practices
Little or no Site Restrictions or Management
Practices
ManagementPractices and Site
RestrictionsRequired
Achieving Class A biosolids: Plant operators must utilize one of six alternatives provided in the Part 503 rule to achieve Class A biosolids (EPA 2004).
Spring 2014 CE 4905
Primary Clarifier
Grit Removal/Bar Screens
Sludge Storage
Shed
Secondary Clarifiers
Anaerobic Digesters
Background
PFRP: Autothermal Thermophilic Aerobic Digestion (ATAD)
Design for GIWA:Influent sewage sludge from the primary anaerobic digester will be pumped into one of four lagoons and sit for two years. The lagoons will be lined with a high density polyethylene geomembrane in-between two six-inch clay layers. A draw-off box will decant excess water to achieve 8% solids. The solids will be dewatered using the belt press and dry outside, formed into windrows, and mechanically turned until 60-80% solids are achieved.
Reactor 2
Reactor 1Pre-storage
Post-storage
Modifications to Primary Anaerobic Digester.
Chosen Process Designs
What are biosolids?
Biosolids are the solid or semi-solid by-product of wastewater treatment that are treated to a sufficient level to be land applied.
How ATAD Works:Influent sewage sludge is thickened and pumped into a typically-cylindrical tank reactor. Thermophilic (40 to 70°C) microbial digestion produces heat and promotes biodegradation of organic material as the sewage sludge is mixed. This treatment process produces Class A biosolids and meets VAR requirements.
Design for GIWA:The unused primary anaerobic digester will be modified by adding four insulated concrete dividing walls and 4 Turborator® aerators. A sludge spraying foam control mechanism will be employed.
Final Design Cost AnalysisCapital Costs
Concrete Dividing Walls $23,845
Water-stop $1,485
Anchoring Bolts $167
Turborators® (4) with floats $100,000
Odor Control $100,000
Foam Control $35,000
Operation & Maintenance Costs
Turborator® Maintenance $1,248/yr
Assumed Lifetime 20 yr
Lifetime O&M costs $25,220
Approximate Total Cost: $287,000
Modified solids process train incorporating ATAD.
Low Cost, Low Technology: Long Term Lagooning and Air Drying
Modified solids process train incorporating Long Term Lagooning and Air Drying.
How Long Term Lagooning and Air Drying Works:Influent sewage sludge is pumped into a lagoon and sits for 1 to 3 years. Then, the solids are dewatered and placed on an air drying pad, where they can be formed into long piles, called windrows. The combination of lagooning and air drying kills weakened pathogens to achieve Class A standards.
Plan view of one solids storage lagoon. Brown=biosolids Blue=supernatent
Final Design Screening
Criteria Evaluated: Criteria Weight:
Capital Costs 25%
Operation and Maintenance Costs
25%
Use of existing facilities 20%
Reliability of Treatment 15%
Final Solids Content of Biosolids
15%
Based on the screening results, we recommend the ATAD design for GIWA.
Process Design Screening
PFRP Criteria: Low Cost, Low Technology Criteria:
Capital Costs Time to Implement
Operation and Maintenance Costs
Final Solids Content of Biosolids
Use of Existing Facilities
Use of Existing Facilities
Reliability of Treatment
Reliability of Treatment
Life Expectancy Marketability
ATAD Key Components
Final Recommendation
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Many Influential Documents:This WERF Report is a good one
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• Downer Grove, IL
• Lakeland Sanitary District No. 1
• MWRA of Greater Chicago
• Pinery
• Wenatchee, WA
• Others
Example LCLT Programs
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Metropolitan Sanitary District of Greater Chicago
Anaerobic Digestion3-5% TS
Centrifugation20-30% TS
Lagoon Dewatering
15% TS
Lagoon Aging
Air Drying60% TS
HSPT
LSPT
Air Drying60% TS
FinalClass A
Biosolids
Final Class A
Biosolids
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The Road to National PRFP Equivalency is filled
with Potholes
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Long Term Storage:Time, digestion, thermal
effects, suppression by non-pathogenic bacteria,
competition for food and chemical actions individually
or in concert all have a positive effect on the
reduction of pathogens.
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Robert Bastian, EPA Dated March 20,0215
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“Chicago’s process never received a favorable PEC
recommendation and was granted approval through the permitting authority"
(EPA Region V).
From: Bastian, Robert [mailto:[email protected]] Sent: Friday, March 20, 2015 10:45 AMTo: Allison DeinesCc: Jennifer Becker ([email protected]); [email protected]: RE: Low Cost-Low Tech Biosolids WERF Project
Allison,
As we discussed, I ran the project proposal by the Pathogen Equivalency Committee (PEC) managers noting that it aims to quantify the impacts of environmental factors and biosolids properties on pathogen and indicator organism inactivation for low-cost, low tech methods of producing Class A biosolids (i.e., lagoon storage, air drying, and cake storage) and indicated that to me it looked like an ideal opportunity to come up with a way to include documenting the performance of such passive methods in a manner that could help lead to having them listed as approved PFRPmethods if it is done in coordination with the PEC …
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Mark C. Meckes
U.S. EPA
Office of Research and Development
Senior Research Microbiologist
Chair: Pathogen Equivalency Committee
Northwest Biosolids Management Association
Annual Conference
Chelan, WA
September 19-21, 2010
Understanding Class A and Pathogen Equivalency
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How to Apply page
Website Resourceswww.epa.gov/nrmrl/pec
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• Application Guidelines
• New Equivalency Application Package Form• Ready-made fill-in
form • summary information
& attachment list• Detailed line-by-line
instructions
Website Resources
How to Apply page
www.epa.gov/nrmrl/pec
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PEC Decision MatrixAre you seeking a site-specific or national equivalency?
Our Challenge:
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Goals
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1. Pilot demonstration
2.Obtain approval for Class A biosolids; 1. Site-specific, or2.Nationally-declared equivalency.
3. Provide the fundamental mechanisms leading to pathogen kill and survival
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LCLT Funding
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• $635,652 SAW Grant
• $37,000 WERF
• $27,000 Lystek International Inc.
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The $37,000 award from WERF, the
research arm of the Water Environment Federation, supports one part of a three-part research project that hopes to demonstrate how low-tech, low-cost biosolids treatment processes can be used to achieve Class A quality. Ultimately,
the goal is to equip small-town water treatment superintendents and regulatory personnel across the nation with a mathematical formula that predicts pathogen die-off in the process. 'We want to know how much time
it takes to create Class A biosolids whose pathogens are virtually undetectable," Becker says.
MTU News Excerpt
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MTU News Cont.
• Sustainability
• For the more than 80 percent of WRRFs in the US that serve a population of fewer than 10,000, according to the EPA's 2008 Clean Watersheds Needs Survey Report to Congress, cost-effectiveness, efficiency and sustainability are growing concerns. This is particularly the case in an era of decreasing budgets and severe drought such as in the American Nest. In these times, forward-thinking WRRF superintendents are asking: Is there a way to improve the water treatment process to meet these challenges?
• "That's the really cool part about this project: It's driven by really smart superintendents who know how their plants work,"
Becker says. "And they are constantly looking for ways to improve things."
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SAW Grant (Cont.)
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LIFT/WERF Engagement
Assemble a Panel of Experts from:•Industry Professionals•EPA and Regional and Local Government.•Engineering Firms•Scientific Community and Academics
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LIFT/WERF Engagement (Cont.)
Services Provided:•Peer Review•Project Guidance
High Quality, Credible and Independent Assessment of: •Research Assumptions•Quality of Data•Technical Conclusions•Reports
Facilitate communication of research findings
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LIFTSTCR’s (Targeted Collaborative Research Projects)
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Collaboration Opportunity: A New Paradigm for Class A Biosolids
Production
Widespread adoption of sustainable biosolids treatment methods are
currently held up by a lack of information on the impacts of environmental
factors and biosolids properties on pathogen and indicator organism (PIO)
inactivation in these systems. A new Targeted Collaborative Opportunity will
explore the impact of these factors on PIO inactivation and developing
mathematical models that can rationally predict PIO inactivation under
a wide range of operating and environmental conditions for producing low-cost, low-tech, Class A biosolids
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Pathogens Zero
Seed Germination91% - 100%
Seedling Vigor94% - 100%
MatureVery Stable
Mg CO2-C/g 0.005
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Batches of Biosolids produced by the GIWA using the LCLT methods are achieving the objectives of WERF’s High Quality Biosolids Project
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PathogensAcceptable
Seed Germination91% - 100%
Seedling Vigor94% - 100%
MatureVery Stable
Low Odors
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We strive to look for innovative ways to deliver the
(agriculture) program material, which include the
latest technologies and best practices
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GOISD grows agriculture program
The Daily Globe
By LARRY [email protected]
Ironwood - The Gogebic-Ontonagon Intermediate School District is bringing a bit of the great outdoors inside by building a new greenhouse near Luther L. Wright K-12 School.
The GOISD's Career Technical Education Department's new agriculture program will use the facility.
It is the first school year for the GOISD's ag program for Gogebic County students. The district began a similar program for Ontonagon County students last year in Ontonagon that included the building of a similar greenhouse.
CTE Director Shawn Klobis said the Gogebic County program began the school year with 11 students. There were 14 to start the year in Ontonagon.
bids for the Ironwood green-house came in a $136,000.EVAN HUHTA, of Moyle Construction of Houghton, works on the Gogebic-Ontonagon
Intermediate School District's future greenhouse north of Luther L. Wright K-12 School, near the football field, Monday afternoon. The facility will be used as part of the GOISD's Career Technical Education Department's agriculture program.
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Proposed Location of Public
Demonstration
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Metropolitan Water District of Greater Chicago
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Metropolitan Water Reclamation District of Greater Chicago
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Model of Public Distribution Program: Northwest Biosolids
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WE&RF Research Funding
Solicited Research - specific RFPs; targeted areas
Unsolicited Research - annual RFP; any area
Subscriber Priority - annual RFP; any area;
requires matching funds
Research Partnership - board-advised fund for
collaborations; rolling deadline
Tailored Collaborative - no dedicated budget;
rolling deadline; WE&RF provides fundraising support and management
1 60%
2 20%
3 15%
4 5%
See all opportunities: http://www.werf.org/a/o/Funding.aspx 115
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Technology Scans
Looking for innovative technologies that bring:
Expert panel of consultants, operators, regulators, and academics provides feedback on these criteria
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Introduction to the LIFT Program
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What Is LIFT?
WEF/WE&RF initiative to accelerate innovation and help move new water technologies into practice
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National Test Bed Network: FAST Water
• Steering Committee
• Planning Partners
www.werf.org/fastwaternetwork
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FAST Water Directory
• Level 1
• Level 2
• Level 3
• Level 4
www.werf.org/testbeddirectory
70 Facilities
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WERF is about to release this 68 page Guidance Document
Too bad I didn’t have this 20 years ago
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Thank You
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