pd fq china presentation
TRANSCRIPT
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2014.05.23
,
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14 14 Water Pollution Control Plants
(WPCP)
12 Combined Systems
2 Separated System
Designed To Treat Twice Their Rated(dry weather) Flow, for example
Dry Weather = 100 MGD
Wet Weather = 200 MGD
WPCPs Capture a Percentage of
Urban Runoff Good capture of small storms
First Flush
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Rainfall is captured on roofs, streets, parks, etc.
Runoff typically enters conveyance systems via:
Catch basins
Roof leaders
Conveyance Systems:
Combined Sewers
Storm Sewers
Fate:
Treatment and discharge
Untreated discharge
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CSO
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Modeling of sewers models are:
Comprehensive
Predictive
Unreliable without field data to calibrate/verify
Monitoring of sewers monitors are:
Point-specific
Historic
Reliable when used properly
+=
Reliable, predictive tool for comprehensive analysis
of sewer systems
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1970-1990 1990-2000 SWMM 2000-2003 InfoWorks CS 2003-2010 Long-Term Control Plan InfoWorks(14 2012-
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(LID)
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3D
FRESHWATER INFLOW &
POLLUTANT LOADSCIRCULATION &TRANSPORT
CHEMICAL & BIOLOGICAL
REACTIONS
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Water Quality Model PhytoplanktonKinetics
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WWTP CombinedArea (Ac)
Storm
DrainageArea (Ac)
Direct
DrainageArea (Ac)
Subcatchments Manholes Pipes
26 4,358 320 1,109 111 243 246
BB 12,446 4 1,782 263 759 624
HP 11,546 2,638 8,359 529 988 894
JA 5,451 15,099 5,871 367 731 722
NC 13,562 536 1,005 314 1,031 760
NR 4,448 42 1,082 107 497 338
OH 9,448 483 147 129 406 367
CI 6,070 709 0 130 187 186
PR 3,575 7,966 0 97 522 409
RH 2,991 98 649 152 424 319
RO 0 2,153 3,557 599 465 353
TI 8,721 6,733 2,860 419 1,054 945
WI 12,822 1,212 1,765 349 906 657
Totals 95,438 37,993 28,186 3,566 8,213 6,820
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Contract Drawings
Field Inspection
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GIS
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TypicalInfoWorksModelDeck
Networks (contain physical collection systemattributes)
Flow data (for calibration)
Graphing templates (for viewing/comparing results, etc)
Boundary conditions (e.g., tides, etc)
Rainfall data (storms that are input into model)
Real-time control data (gate automation, SCADA, etc)
Simulations (versions and history tracked)
Wastewater data (diurnal curves, etc)
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Jamaica Bay
Combined 1,301 acres
Separated 1,532 acres
DWF 11 mgd
WWF 40 mgd @ 0.1 in/hr
Combined 2,741 acres
DWF 16.5 mgd
WWF 86 mgd @ 0.1 in/hr
Combined 1,164 acres
Separated 14,083 acres
DWF 51 mgd
WWF 45 mgd @ 0.1 in/hr
Total 250 mgd
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Rockaway
Nameoak PS
Bayswater PS
BroadChannel PS
Seagirt PS
M9BroadChannel PS
M6
M7
M8
M9
M1
M2
M3
M5
M4
TG-
1
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2012
25
Site -scale
Calibration
Area-wide
Calibration
Measured Flows
at Upland
Locations
-2009-10 PlaNYC
-Other Studies
Model
Validation
Measured Flow
Data Near
Regulators
-2005/06 WWFP
- Other Studies
WWTP Data
SCADA Data
CSO Facility Data
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- Imperviousness City-wide infrared satellite imagery
Spectral Mixing Analysis
Map bare soil and fractional vegetation cover as
proxies for pervioussurface area
Directly ConnectedImpervious Areas
Fraction thatcontributes runoffdirectly to sewers
Source: Christopher Small, Columbia University
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1km x 1km grids
5-minute data
Calibrated based on point gage data
Phase I Six calibration and seven validation
events
Phase II
Three calibration and twovalidation events
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TIBB
NCBNCM
JA
26
HP
WI
RH
CIOH
PR
ROOB
NR
20 Sites in Total
Distributed throughout fiveboroughs
Diverse land uses to develop
representative hydrology modelparameters
Goal: Achieve overall bestcorrelation so the hydrology
parameters can be appliedfor unmonitored areas
Phase I Oct-Dec 2009Phase II Nov-Dec 2010
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Sewer System OptimizationInner and Outer Harbor
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Storage Flushing Creek
43 MG Storage
28.4 MG tank
15 MG induced storage
40 MGD pump station
$291 million
800 MG annual capture
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Storage - Tunnels
S S t O ti i ti
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Sewer System OptimizationInner and Outer Harbor
In-line storage
Maintain existing HGL
Must deflate during
intense storms Must be fail-safe
Required change toexisting drainage plan
Vault Accessway
RemoteUndergroundControl Vault
Pipe Sleeve Containing Airpiping
Downstream
Arc Bottom RectangularCombined Sewer or Outfall
Stainless Steel Anchorsand Clamping Plates
Inflatable DamInflatable Dam
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Design incorporating natural features to capture,
retain, and treat stormwater in place of traditionalgrey infrastructure
Adds aesthetic, recreational, and environmental
value
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Staten Island Blue Belt
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Phased approach between 2010 and 2030
Current phase focuses on specific tributarywatersheds
Future phase for East River, open waters, and
tributaries with grey projects
Managed
Acres
Percent
of CSIA
Managed
Acres
Percent
of CSIA
Managed
Acres
Percent
of CSIA
Managed
Acres
Percent
of CSIA
Alley Creek 1,490 0% 0% 45 3.0% 45 3.0%
Bronx River 2,331 244 10% 13 0.6% 66 2.8% 322 14%Coney Island Creek 694 0% 0% 7 1.0% 7 1.0%
Flushing Bay 4,049 401 10% 11 0.3% 110 2.7% 522 13%
Flushing Creek 5,923 314 5.3% 0% 165 2.8% 479 8.1%
Gowanus Canal 1,387 135 10% 5 0.4% 22 1.6% 162 12%
Hutchinson River 1,128 111 10% 15 1.3% 32 2.9% 158 14%
Jamaica Bay & CSO Tributaries 7,891 386 4.9% 23 0.3% 266 3.4% 675 8.6%
Newtown Creek 4,524 461 10% 14 0.3% 118 2.6% 593 13%
Westchester Creek 3,480 348 10% 17 0.5% 122 3.5% 487 14%
ROW Public Onsite Public Onsite Private Total
Waterbodies/WatershedsCSIA
(Acres)
Future Phase: DEP will explore opportunities for remainder of 10% GI target
Current Phase: Priority Drainage Areas
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Sub-catchment Scale
Lumped
Retention
Tank in the
Model
Site-scale
Bioswale Schematic Cross section
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Blue Roof
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Green Roof
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Permeable Pavement
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Rain Cisterns
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Subsurface Storage
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Hurricane Sandy
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