Presentation available at
neorsd.org/sewerU
Tweet with @neorsd #SewerU
Next sewermester:
Tuesday, January 26, 1:00-3:00 p....
1952 Cuyahoga River
1960s Cuyahoga River
1969 Cuyahoga River
Your SewerU syllabus
• NEORSD Responsibilities
• Urban Water Cycle
• Sewer System 101
• WWTP 101
• Issues, Challenges and ...
Your SewerU syllabus
• NEORSD Responsibilities
• Urban Water Cycle
• Sewer System 101
• WWTP 101
• Issues, Challenges and ...
Who We Are…
• Created in 1972 by Court Order
• Servicing all or part of 62
member communities
• 1 million customers
• 90+ ...
Key Responsibilities
• WWTP Operation
– Easterly, Southerly, Westerly
• Combined and Separate Interceptors
– Construction,...
Wastewater Treatment Plants
District Service Area
Over 40 years of investment
• Since 1972: $4+ billion
– Wastewater treatment plants
– Interceptor and relief sewers
– CSO ...
Your SewerU syllabus
• NEORSD Responsibilities
• Urban Water Cycle
• Sewer System 101
• WWTP 101
• Issues, Challenges and ...
Your SewerU syllabus
• NEORSD Responsibilities
• Urban Water Cycle
• Sewer System 101
• WWTP 101
• Issues, Challenges and ...
Sewer system 101
• During the 1800s, growing cities built storm
sewers to prevent street flooding.
Sewer system 101
• 1880s-90s: Sanitary sewers from houses
connected to existing storm drains (creating
numerous water qual...
Combined sewers
• Matter of evolution, then matter of choice
– “For the closely built up sections of your city, where
the ...
Sewer system 101
• 1899-1939: Construction of “Intercepting
Sewers” to collect sanitary flow, and
deliver it to Lake Erie ...
Interceptor sewers
• “Highways” of sewer system,
collecting wastewater from
smaller sewers serving
individual streets
“Dilution is the
solution to
pollution.”
Sewer system 101
• 1922-1938: Treatment plants built at
locations of the three outfalls: Easterly,
Westerly, Southerly
WWTP
Regulator
Industrial
Wastewater
Street Catch
Basins
Domestic
Wastewater
Flow to WWTP
Combined
Sewer
Lake Erie
Combine...
Combined sewer system
• Regulating structures
allow excess
stormwater to
overflow
Side-spill weir
Overflow pipe
SWO
SWO
DW...
Perpendicular weir
Leaping weir
DWO
DWO
SWO
SWO
Typical automated regulator
UNDERGROUND
EQUIPMENT VAULT
REGULATOR
TO TREATMENT PLANT
TO LAKE
INFLATABLE DAM
Automated Regulator
Combined Sewer Overflow (CSO)
Combined sewer area:
124 CSOs
75 sq. miles
CSOs impact water quality
• When it rains, the bacteria
levels at local beaches and
streams will be elevated
Public notification
98%
CAPTURE
0
1
2
3
4
5
6
7
8
9
Baseline (1970s) Current(2011) Target (2036)
9
4.5
0.494
TypicalYear
CSOVolumeRemaining(BG...
CSO Long-Term Control Plan Consent Decree
Estimated $3B investment in CSO control measures over 25 years
• 3+ miles long
• 24 ft. diameter
• 60 MG storage
• 300 MG CSO Reduction
Euclid Creek Tunnel
$195 million
($3 million unde...
Euclid Creek Tunnel
$195 million
($3 million under budget)
Euclid Creek Tunnel
$195 million
($3 million under budget)
Euclid Creek Tunnel
$195 million
($3 million under budget)
…plus Green Infrastructure
• 9 ambassador projects
• Assessing opportunities for more
Green Infrastructure: Stormwater out of Combined system
Courtyard by Marriott: Redevelopment + Sand = GI Opportunity
No st...
Green Infrastructure
Funding: Transformed Public Square
Separate Sewer System
Street Catch
Basins
Industrial
Wastewater
Domestic
Wastewater
Storm Sewer
WWTP
Flow to WWTP
Sanitary...
COMBINED
STORM
SANITARY
Combined vs. Separate
• 1920s-1960s: evolution from combined
sewers to separate sewers built in a
...
Over/underDividing wall manhole
Separate manhole
Combined vs. Separate
Over/under sewers use
a plate in manholes to
keep storm flows out of
the sanitary sewer.
Combined vs. Separate
• 1960s-today: evolution from common
trench sewers to truly separate sewers in
many areas
STORM
SANI...
Separate sewer problems
• Cross-connections
(storm to sanitary or
sanitary to storm)
SANITARY
STORM
Illicit Connections
Separate sewer problems
• Constructed sanitary sewer overflows to
relieve full sanitary sewers during rain
SANITARY
STORM
Sanitary Sewer Overflows
• SSO Structures
• Basement Flooding
• Surcharged sewers
• Common trench sewers
Inflow
Types of Sewers in the
District’s Service Area
• Combined
• Common Trench (storm and sanitary)
• Separate Trench (storm an...
Sewer System Types
District Service Area
NEORSD Obligations:
• CSOs
• WWTPs
Local CWA Obligations:
• SSOs
• Illicit Discharges & Connections
• Stormwater Outfalls
...
Rainfall and level of service
• Combined Sewer Systems
– 5+ year storm
• Storm Sewers and Culverts
– 5 to 50+ year storm
•...
Your SewerU syllabus
• NEORSD Responsibilities
• Urban Water Cycle
• Sewer System 101
• WWTP 101
• Issues, Challenges and ...
Wastewater Treatment 101
The treatment process
1 Preliminary
2 Primary
3 Secondary
4 Disinfection
Wastewater Treatment Plants
90 Billion Gallons Treated Annually
0
5
10
15
20
25
30
35
40
45
Easterly WWTP Southerly
WWTP
Westerly
WWTP
Wastewater Treatment Process
• Preliminary Treatment
• Primary Treatment
• Secondary Treatment
• Disinfection
• Solids Han...
Southerly
Preliminary Treatment
Mechanical Bar Rakes
Preliminary Treatment
Screenings Collection
Preliminary Treatment
Aerated Grit Channel
Preliminary Treatment
Grit Collection & Disposal
Primary Treatment
Primary Settling Tank
Secondary Treatment
Activated Sludge – Aeration Tanks
Trickling
Filters
Stalked Ciliates
Rotifer
Paramecium
Amoeba
Aeration Process Blowers
1250 HP, 24000 SCFM
Secondary Treatment
Final Settling Tank
Secondary Treatment
Disinfection and effluent
Solids Handling
Dewatering Centrifuges
Solids Handling
Incineration
Your SewerU syllabus
• NEORSD Responsibilities
• Urban Water Cycle
• Sewer System 101
• WWTP 101
• Issues, Challenges and ...
What is a watershed?
• Watershed: An extent
of land where water
from precipitation
drains downhill into a
body of water, s...
Northeast Ohio major watersheds
Subwatersheds
Regional Stormwater System =
Channels and pipes draining 300 acres or
more. Approximately 400 miles.
Stormwater run-off
• Erosion
• Water Quality
• Flooding
Mandate
• Judge McMonagle mandated the District
– “develop a detailed integrated capital
improvement plan for regional man...
Mandate
• ORC Chapter 6119 Authority
• January 7, 2010 Board approval
of Title V Stormwater
Management Code
2002 Study: 513 Problem
Locations Identified
372%
Stormwater Service Area
Impervious Surfaces
Streambank erosion along
Chippewa Creek
Middleburg Heights/Brook Park, Ohio
along Abrams Creek
Streambank erosion on Mill Creek
threatens Warner Road
in Garfield Heights, Ohio
Debris along Dugway Brook,
Cleveland Heights, Ohio
Streambank erosion along
Stickney Creek
Streambank erosion, Baldwin
Creek, August 2011
Regional Stormwater Management
• Funding the Solutions:
– More than $228 million in
backlogged stormwater-related
projects...
Master
Plans
Inspect &
Maintain
Construct
Projects
Encourage
Good
Practices
What Will We Do?
We will
develop
stormwater
master plans
We will perform inspection
and maintenance
We will build projects
We will encourage good
practices
Litigation Timeline for RSMP
• 4/21/2011: Judge Pokorny rules in favor of
the District Regional Stormwater Program
• 1/1/2...
Litigation Timeline for RSMP
• 2/19/2014: Ohio Supreme Court decides
to hear case
• 9/10/2014: Ohio Supreme Court Hearing
Where we were….
Where we are today
The Cuyahoga River “is
in its best shape since
the Civil War”
Chuck Boucher, OEPA (Akron
Beacon Journal...
Monitoring Stream Health
• Water Chemistry
• Habitat
• Fish
• Macroinvertebrates
Water Chemistry Sampling
• Grab samples
• Data sondes
• Toxicity testing
• Fish tissue
Water Chemistry Results
Ammonia concentration at site downstream of Southerly WWTC
0.0
0.5
1.0
1.5
2.0
2.5
1984
1985
1987
...
Graph from Ohio E
Habitat Evaluation
• Qualitative Habitat Evaluation Index (QHEI)
• Upstream of navigation channel =
Good/Excellent
• Navig...
Fish Community Health
• Electrofishing
– Index of Biotic Integrity (IBI)
– Modified Index of Well-Being (MIwb)
Pollution-Intolerant Fish
Stonecat Madtom
Mimic Shiner
Macroinvertebrate Community
Health
• Quantitative & qualitative sampling
– Hester-Dendy sampler
– Invertebrate Community I...
Pink Heelsplitter
Pollution-Sensitive
Macroinvertebrates
Cuyahoga River today…
Challenges
Image courtesy Ohio Sea Grant
Challenges
• Algae and microcystins
– Improved monitoring. Collaboration?
• Nonpoint sources
• Pharmaceuticals
• Regulator...
Presentation available at
neorsd.org/sewerU
Tweet with @neorsd #SewerU
Next sewermester:
Tuesday, January 26, 1:00-3:00 p....
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Sewer University #SewerU presented by @neorsd
Upcoming SlideShare
Loading in …5
×

Sewer University #SewerU presented by @neorsd

936 views

Published on

The history of sewers and the future of clean water in Greater Cleveland

Published in: Environment
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
936
On SlideShare
0
From Embeds
0
Number of Embeds
10
Actions
Shares
0
Downloads
29
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Sewer University #SewerU presented by @neorsd

  1. 1. Presentation available at neorsd.org/sewerU Tweet with @neorsd #SewerU Next sewermester: Tuesday, January 26, 1:00-3:00 p.m neorsd.org/SewerU2016.
  2. 2. 1952 Cuyahoga River
  3. 3. 1960s Cuyahoga River
  4. 4. 1969 Cuyahoga River
  5. 5. Your SewerU syllabus • NEORSD Responsibilities • Urban Water Cycle • Sewer System 101 • WWTP 101 • Issues, Challenges and Solutions
  6. 6. Your SewerU syllabus • NEORSD Responsibilities • Urban Water Cycle • Sewer System 101 • WWTP 101 • Issues, Challenges and Solutions
  7. 7. Who We Are… • Created in 1972 by Court Order • Servicing all or part of 62 member communities • 1 million customers • 90+ billion gallons wastewater treated each year
  8. 8. Key Responsibilities • WWTP Operation – Easterly, Southerly, Westerly • Combined and Separate Interceptors – Construction, Operation and Maintenance • Combined Sewer Overflow (CSO) Control • Regional Stormwater Management
  9. 9. Wastewater Treatment Plants
  10. 10. District Service Area
  11. 11. Over 40 years of investment • Since 1972: $4+ billion – Wastewater treatment plants – Interceptor and relief sewers – CSO control and interceptor rehab – Other facility upgrades
  12. 12. Your SewerU syllabus • NEORSD Responsibilities • Urban Water Cycle • Sewer System 101 • WWTP 101 • Issues, Challenges and Solutions
  13. 13. Your SewerU syllabus • NEORSD Responsibilities • Urban Water Cycle • Sewer System 101 • WWTP 101 • Issues, Challenges and Solutions
  14. 14. Sewer system 101 • During the 1800s, growing cities built storm sewers to prevent street flooding.
  15. 15. Sewer system 101 • 1880s-90s: Sanitary sewers from houses connected to existing storm drains (creating numerous water quality problems)
  16. 16. Combined sewers • Matter of evolution, then matter of choice – “For the closely built up sections of your city, where the streets are all paved, and much organic matter is washed away by the rain water, the separate or double system is not to be recommended, because the rain water channels would become almost as foul as the sewers and require a similar treatment, therefore making the separation uncalled for and more expensive.” — R. Hering, 1882
  17. 17. Sewer system 101 • 1899-1939: Construction of “Intercepting Sewers” to collect sanitary flow, and deliver it to Lake Erie and Cuyahoga River at three outfall locations (consolidate water quality problems)
  18. 18. Interceptor sewers • “Highways” of sewer system, collecting wastewater from smaller sewers serving individual streets
  19. 19. “Dilution is the solution to pollution.”
  20. 20. Sewer system 101 • 1922-1938: Treatment plants built at locations of the three outfalls: Easterly, Westerly, Southerly
  21. 21. WWTP Regulator Industrial Wastewater Street Catch Basins Domestic Wastewater Flow to WWTP Combined Sewer Lake Erie Combined Sewer OverflowDry weather outlet (DWO) Storm Water Outlet (SWO) Combined sewer system
  22. 22. Combined sewer system • Regulating structures allow excess stormwater to overflow Side-spill weir Overflow pipe SWO SWO DWO DWO
  23. 23. Perpendicular weir Leaping weir DWO DWO SWO SWO
  24. 24. Typical automated regulator UNDERGROUND EQUIPMENT VAULT REGULATOR TO TREATMENT PLANT TO LAKE INFLATABLE DAM
  25. 25. Automated Regulator
  26. 26. Combined Sewer Overflow (CSO)
  27. 27. Combined sewer area: 124 CSOs 75 sq. miles
  28. 28. CSOs impact water quality • When it rains, the bacteria levels at local beaches and streams will be elevated
  29. 29. Public notification
  30. 30. 98% CAPTURE 0 1 2 3 4 5 6 7 8 9 Baseline (1970s) Current(2011) Target (2036) 9 4.5 0.494 TypicalYear CSOVolumeRemaining(BG)Consent Decree significant CSO reduction in 25 years
  31. 31. CSO Long-Term Control Plan Consent Decree Estimated $3B investment in CSO control measures over 25 years
  32. 32. • 3+ miles long • 24 ft. diameter • 60 MG storage • 300 MG CSO Reduction Euclid Creek Tunnel $195 million ($3 million under budget)
  33. 33. Euclid Creek Tunnel $195 million ($3 million under budget)
  34. 34. Euclid Creek Tunnel $195 million ($3 million under budget)
  35. 35. Euclid Creek Tunnel $195 million ($3 million under budget)
  36. 36. …plus Green Infrastructure • 9 ambassador projects • Assessing opportunities for more
  37. 37. Green Infrastructure: Stormwater out of Combined system Courtyard by Marriott: Redevelopment + Sand = GI Opportunity No stormwater runoff from this site through 100-year storm
  38. 38. Green Infrastructure Funding: Transformed Public Square
  39. 39. Separate Sewer System Street Catch Basins Industrial Wastewater Domestic Wastewater Storm Sewer WWTP Flow to WWTP Sanitary Sewer Lake Erie
  40. 40. COMBINED STORM SANITARY Combined vs. Separate • 1920s-1960s: evolution from combined sewers to separate sewers built in a common trench
  41. 41. Over/underDividing wall manhole Separate manhole Combined vs. Separate
  42. 42. Over/under sewers use a plate in manholes to keep storm flows out of the sanitary sewer.
  43. 43. Combined vs. Separate • 1960s-today: evolution from common trench sewers to truly separate sewers in many areas STORM SANITARY SANITARY STORM
  44. 44. Separate sewer problems • Cross-connections (storm to sanitary or sanitary to storm) SANITARY STORM
  45. 45. Illicit Connections
  46. 46. Separate sewer problems • Constructed sanitary sewer overflows to relieve full sanitary sewers during rain SANITARY STORM
  47. 47. Sanitary Sewer Overflows • SSO Structures • Basement Flooding • Surcharged sewers • Common trench sewers
  48. 48. Inflow
  49. 49. Types of Sewers in the District’s Service Area • Combined • Common Trench (storm and sanitary) • Separate Trench (storm and sanitary)
  50. 50. Sewer System Types District Service Area
  51. 51. NEORSD Obligations: • CSOs • WWTPs Local CWA Obligations: • SSOs • Illicit Discharges & Connections • Stormwater Outfalls • Septic Tanks 312 miles District-owned sewers and interceptors 3,107 miles Locally-owned sewers and interceptors
  52. 52. Rainfall and level of service • Combined Sewer Systems – 5+ year storm • Storm Sewers and Culverts – 5 to 50+ year storm • Stormwater “level of service” will be a key issue
  53. 53. Your SewerU syllabus • NEORSD Responsibilities • Urban Water Cycle • Sewer System 101 • WWTP 101 • Issues, Challenges and Solutions
  54. 54. Wastewater Treatment 101
  55. 55. The treatment process 1 Preliminary 2 Primary 3 Secondary 4 Disinfection
  56. 56. Wastewater Treatment Plants
  57. 57. 90 Billion Gallons Treated Annually 0 5 10 15 20 25 30 35 40 45 Easterly WWTP Southerly WWTP Westerly WWTP
  58. 58. Wastewater Treatment Process • Preliminary Treatment • Primary Treatment • Secondary Treatment • Disinfection • Solids Handling
  59. 59. Southerly
  60. 60. Preliminary Treatment Mechanical Bar Rakes
  61. 61. Preliminary Treatment Screenings Collection
  62. 62. Preliminary Treatment Aerated Grit Channel
  63. 63. Preliminary Treatment Grit Collection & Disposal
  64. 64. Primary Treatment Primary Settling Tank
  65. 65. Secondary Treatment Activated Sludge – Aeration Tanks Trickling Filters Stalked Ciliates Rotifer Paramecium Amoeba
  66. 66. Aeration Process Blowers 1250 HP, 24000 SCFM Secondary Treatment
  67. 67. Final Settling Tank Secondary Treatment
  68. 68. Disinfection and effluent
  69. 69. Solids Handling Dewatering Centrifuges
  70. 70. Solids Handling Incineration
  71. 71. Your SewerU syllabus • NEORSD Responsibilities • Urban Water Cycle • Sewer System 101 • WWTP 101 • Issues, Challenges and Solutions
  72. 72. What is a watershed? • Watershed: An extent of land where water from precipitation drains downhill into a body of water, such as a river, lake, reservoir, estuary, or wetland.
  73. 73. Northeast Ohio major watersheds
  74. 74. Subwatersheds
  75. 75. Regional Stormwater System = Channels and pipes draining 300 acres or more. Approximately 400 miles.
  76. 76. Stormwater run-off • Erosion • Water Quality • Flooding
  77. 77. Mandate • Judge McMonagle mandated the District – “develop a detailed integrated capital improvement plan for regional management of wastewater collection and storm drainage to identify a capital improvement program for the solution of all intercommunity drainage problems (both storm and sanitary) in the District.”
  78. 78. Mandate • ORC Chapter 6119 Authority • January 7, 2010 Board approval of Title V Stormwater Management Code
  79. 79. 2002 Study: 513 Problem Locations Identified 372%
  80. 80. Stormwater Service Area
  81. 81. Impervious Surfaces
  82. 82. Streambank erosion along Chippewa Creek
  83. 83. Middleburg Heights/Brook Park, Ohio along Abrams Creek
  84. 84. Streambank erosion on Mill Creek threatens Warner Road in Garfield Heights, Ohio
  85. 85. Debris along Dugway Brook, Cleveland Heights, Ohio
  86. 86. Streambank erosion along Stickney Creek
  87. 87. Streambank erosion, Baldwin Creek, August 2011
  88. 88. Regional Stormwater Management • Funding the Solutions: – More than $228 million in backlogged stormwater-related projects – Implement fee to customers (residential and commercial) based on impervious surface
  89. 89. Master Plans Inspect & Maintain Construct Projects Encourage Good Practices What Will We Do?
  90. 90. We will develop stormwater master plans
  91. 91. We will perform inspection and maintenance
  92. 92. We will build projects
  93. 93. We will encourage good practices
  94. 94. Litigation Timeline for RSMP • 4/21/2011: Judge Pokorny rules in favor of the District Regional Stormwater Program • 1/1/2013: Program goes live • 9/26/2013: 8th District Court of Appeals rules against the Program, all District Stormwater activities suspended
  95. 95. Litigation Timeline for RSMP • 2/19/2014: Ohio Supreme Court decides to hear case • 9/10/2014: Ohio Supreme Court Hearing
  96. 96. Where we were….
  97. 97. Where we are today The Cuyahoga River “is in its best shape since the Civil War” Chuck Boucher, OEPA (Akron Beacon Journal 10/06/08)
  98. 98. Monitoring Stream Health • Water Chemistry • Habitat • Fish • Macroinvertebrates
  99. 99. Water Chemistry Sampling • Grab samples • Data sondes • Toxicity testing • Fish tissue
  100. 100. Water Chemistry Results Ammonia concentration at site downstream of Southerly WWTC 0.0 0.5 1.0 1.5 2.0 2.5 1984 1985 1987 1988 1990 1991 1992 1996 1997 1998 1999 2000 2001 2003 2004 2006 2007 2008 Year AverageAmmoniaConcentration (mg/L) Nitrification started at Southery WWTP
  101. 101. Graph from Ohio E
  102. 102. Habitat Evaluation • Qualitative Habitat Evaluation Index (QHEI) • Upstream of navigation channel = Good/Excellent • Navigation channel = Poor – Artificial habitat
  103. 103. Fish Community Health • Electrofishing – Index of Biotic Integrity (IBI) – Modified Index of Well-Being (MIwb)
  104. 104. Pollution-Intolerant Fish Stonecat Madtom Mimic Shiner
  105. 105. Macroinvertebrate Community Health • Quantitative & qualitative sampling – Hester-Dendy sampler – Invertebrate Community Index (ICI)
  106. 106. Pink Heelsplitter Pollution-Sensitive Macroinvertebrates
  107. 107. Cuyahoga River today…
  108. 108. Challenges Image courtesy Ohio Sea Grant
  109. 109. Challenges • Algae and microcystins – Improved monitoring. Collaboration? • Nonpoint sources • Pharmaceuticals • Regulatory climate
  110. 110. Presentation available at neorsd.org/sewerU Tweet with @neorsd #SewerU Next sewermester: Tuesday, January 26, 1:00-3:00 p.m neorsd.org/SewerU2016.

×