TWCA Fall 2016 Conference

1. TWCA Fall Conference | Friday October 14, 2016
Biosolids Panel
Presented by:
David S. Yanke
President – Environmental Practice

2. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Agenda
• Purpose of study for Trinity River Authority (TRA)
• Beneficial reuse options
• Biosolids innovations
• Biosolids in Texas
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3. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Purpose of Study
• What biosolids
management methods
are available for TRA?
• Which methods might
provide cost
effective/sustainable
options?
• Wastewater and solid
waste “crossover”
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4. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Beneficial Reuse Options
• Any method of managing biosolids that
keeps the material out of landfills
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Land Application
Composting
Heat Drying (Pelletization)

5. NEWGEN STRATEGIES AND SOLUTIONS, LLC
• Land Application
– Method employed for
centuries
– EPA 503 regulations
(1993) sets limits for:
• Pathogen count
• Amount of trace metals
• Vector attraction
guidelines
Beneficial Reuse Options (con’t)
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6. NEWGEN STRATEGIES AND SOLUTIONS, LLC
• Composting
– Biosolids are rich in
nitrogen and water
content
– Cannot be labeled
“organic”
– Process meets
requirements of EPA
503 regulations
Beneficial Reuse Options (con’t)
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7. NEWGEN STRATEGIES AND SOLUTIONS, LLC
• Heat Drying
– Volume reduction
– Class A product
– Ease of transport
– Drawback: huge
power consumption
Beneficial Reuse Options (con’t)
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8. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Beneficial Reuse Options – Other
Technologies
Biosolids Solar Array (Merrell Bros.)
• Capital costs (50,000 wet ton
throughput) = $8.0 to $12.5
million
• Sludge is pre-dried to 60%
• Subsequently passed through
stacked oven for further drying
• Final product is 94% solids
content, Class AA
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9. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Beneficial Reuse Options – Other
Technologies (con’t)
Fertilizer Manufacturing (Anuvia)
• Two-stage hydrolysis process
• Produce roughly 78,000 tons of fertilizer per year
• Approximate cost of $20 to $40 per dry ton
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10. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Beneficial Reuse Options – Other
Technologies (con’t)
Hyper-X Evaporating Dryer
(Singnergy)
• Sludge is uniformly
pressed between a hot
drum and a belt
• Resulting material is over
90% dry
• Relatively small footprint
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11. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Biosolids in Texas
• NewGen conducted interviews and
research with a multitude of entities:
– Compost processors
– Biosolids management and hauling
companies
– Landfills
– Regional wastewater treatment plants
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12. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Biosolids in Texas (con’t)
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13. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Biosolids in Texas (con’t)
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14. NEWGEN STRATEGIES AND SOLUTIONS, LLC
Biosolids in Texas (con’t)
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15. NEWGEN STRATEGIES AND SOLUTIONS, LLC
City of Austin, Texas
• Anaerobically digested
biosolids with residential
brush material to make
“Dillo Dirt”
• 6-foot high windrows
more than 500 feet long
• Meets all Texas and EPA
requirements for
unrestricted use
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16. NEWGEN STRATEGIES AND SOLUTIONS, LLC
City of Dallas, Texas
• 110 MGD capacity at
Southside facility
• Anaerobically digested
• Biogas meets ~60% of
Southside’s energy
needs
• Land disposed on-site at
facility to grow cotton
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17. NEWGEN STRATEGIES AND SOLUTIONS, LLC
City of Houston, Texas
• 69th Street and Almeda Sims
facilities produced 32,000 dry
tons of pellets in 2012
through heat drying
• Product sold as: Hou-Actinite,
Sustainite, and Cultivite
• Currently designing estimates
for new facility at 69th Street
for $100 million
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18. NEWGEN STRATEGIES AND SOLUTIONS, LLC
City of Waco, Texas
• Pelletization program began
in 1996
• Produces Class A material
(~22 tons per day)
• Markets to farmers who self-
haul ($35-$40 per ton)
• Supplies approximately 70%
of power requirements
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19. NEWGEN STRATEGIES AND SOLUTIONS, LLC
San Antonio River Authority
• Salatrillo plant permitted
for 5.83 MGD (~1,000 dry
tons of biosolids a year)
• Employs aeration basins
and belt filter presses
• Class A material
• Composted on-site
through collaborative
effort with Texas Landfill
Management
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20. NEWGEN STRATEGIES AND SOLUTIONS, LLC
New Earth / San Antonio Water System
• Six year relationship
• Biosolids placed into
their compost
• Sold to professional
landscapers and
weekend gardeners
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21. Questions?
David S. Yanke
President – Environmental Practice
3420 Executive Center Drive, Suite 165
Austin, Texas 78731
512.649.1254
dyanke@newgenstrategies.net