Presented to the - Innovyze · 2018. 8. 28. · Presented to the. Innovyze Santa Barbara User...
Transcript of Presented to the - Innovyze · 2018. 8. 28. · Presented to the. Innovyze Santa Barbara User...
Presented to the
Innovyze Santa Barbara User MeetingPresented by:
Jeroen OlthofWater Systems Consulting, Inc.
August 22, 2018
Agenda Hydraulic Model Development
Infrastructure Dry weather flows Wet weather flows Calibration
System Evaluation On-Going Uses
Review new transportation infrastructure projects Evaluate proposed new developments Support condition assessment and rehabilitation programs
Use as Part of Coordinated Toolset Cartegraph OMS for maintenance history POSM for CCTV inspection results Future InfoMaster
Slide 2
System Statistics Service area population approximately 92,000 Approximately 6,000 manholes Approximately 250 miles of pipe 7 pump stations
Slide 3
Collection System Infrastructure Previous model focused on larger pipes; contained about 71 miles of pipe,
or roughly 25% of the system For this update, objective was an all-pipes model Initial model construction
GIS database was primary data source Nodes (manholes and cleanouts) identified using City’s atlas map
numbering system, e.g. MH-D07-010 Connectivity generally good Some missing rim elevations – populated using ground topography Many missing invert elevations – populated using pipe slopes, record
drawings, and typical depths (sources noted) Previous model used as reference
Slide 4
Model Network
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Tributary Areas Based on Flow Monitoring Approximately 50 basins were defined based on previous work and were
refined for each flow monitor point Used tools in InfoSewer to generate Theissen polygons around each
manhole to generate sub-basins at each manhole Flow parameters (such as diurnal flow patterns and rainfall response
factors) that applied to a basin were applied to the sub-basins within that basin
Tributary Areas Based on Flow Monitoring
Slide 7
Tributary Areas
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Flow Assignment: Water Use Data
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Mon
thly
Ave
rage
Wat
er U
se (m
gd)
Dry Weather Flow Assignment Water consumption data available at each meter “Water to Sewer” factors developed for different land uses
Slide 10
Consolidated Category
Wastewater Flow : Winter Water
Demand
Assigned Cap for Wastewater
Production (gpd)Single Family Residential
95% 300
Multiple Family Residential
95% N/A
Commercial 90% N/AIndustrial 95% N/AInstitutional 90% N/AOpen Space 10% N/A
Load Points for sanitary flow based on winter water use
Slide 11
Dry Weather Calibration (Steady State)
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Dry Weather Diurnal Patterns
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Dry Weather Calibration
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0.00
2.00
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12.00
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0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00
Flow
(mgd
)
Time
WWTP Modeled Dry Weather Flow Average June 2014 Effluent (mgd) Average June 2014 Confluent (mgd)
Wet Weather Flow Assignment Storm events Contributing area and
response factors for each basin
Slide 15
Wet Weather Calibration at El Estero WWTP
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3/19/11 0:00 3/19/11 12:00 3/20/11 0:00 3/20/11 12:00 3/21/11 0:00 3/21/11 12:00 3/22/11 0:00
March 2011 Confluent (mgd) March 2011 Effluent (mgd) WWTP Modeled March 2011 Event
Parcels with Additional Flow due to future development (or septic conversion)
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Initial System Evaluation: Potential Constraints under Design Conditions
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0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00
Flow
(mgd
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2014 Dry Weather Flow (mgd) 2014 Design Storm Wet Weather Flow (mgd)
2050 Dry Weather Flow (mgd) 2050 Design Storm Wet Weather Flow (mgd)
Predicted Surcharging
Slide 19
Proposed System Improvements
Slide 20
Continuing Use of Model Identify areas for follow-up flow monitoring or real-time monitors
Evaluate new transportation infrastructure projects Sizing for new inverted siphons
Evaluate new developments Add flow, route downstream
Evaluate operational changes Influent gate closure
Support planning for rehabilitation projects
Incorporation of model results into InfoMaster
Slide 21
Route flows downstream from new development or new bridge
Slide 22
Downstream profile
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Gate Closure
Slide 24
Gate Closure
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- 100,000 200,000 300,000 400,000 500,000 600,000 700,000 800,000 900,000 1,000,000
Wat
er S
urfa
ce E
leva
tion
Volume in Model Pipes Below Water Surface (gallons)
Estimated System Storage
Gate Closure
Slide 26
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200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
1,800,000
2,000,000
0
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0:00 1:3
0
3:00
4:30
6:00
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9:00
10:3
0
12:0
0
13:3
0
15:0
0
16:3
0
18:0
0
19:3
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21:0
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22:3
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0:00
Acc
umul
ated
Vol
ume
(gal
lons
)
Flow
(mgd
)
Flow (mgd) Accumulated Volume (gallons)
Questions and Discussion
Slide 27