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PORT DARLINGTON WPCP EXPANSION PROJECT. WEAO Student Design Competition. Ryerson University Design Team : Nancy Afonso Ruston Bedasie Kirill Cheiko Andrew Iammatteo. Introduction. Regional Municipality of Durham has identified a need to expand the Port Darlington WPCP in two phases

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port darlington wpcp expansion project

PORT DARLINGTON WPCPEXPANSION PROJECT

WEAO Student Design Competition

Ryerson University Design Team:

Nancy Afonso

Ruston Bedasie

KirillCheiko

Andrew Iammatteo

introduction
Introduction
  • Regional Municipality of Durham has identified a need to expand the Port Darlington WPCP in two phases
  • Port Darlington WPCP – services the Bowmanville Urban Area

Port Darlington WPCP

  • Objectives:
    • Develop preliminary design and layout for Phase I expansion
    • Conceptually design the Phase II expansion
    • Adhere to design philosophy and limit usage of chemicals
  • Achieve innovation based on field proven projects, with environmental sustainability and cost awareness always in mind.

(Courtesy of Google Maps)

outline
Outline
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Design Basis and Challenges
  • Process Selection and Facility Design:
    • Headworks
    • Primary Treatment
    • Secondary Treatment
    • Disinfection
    • Solids Handling
    • Additional Considerations
  • Process Control
  • Phase I Economic Analysis
  • Recommendations and Closing Remarks
slide4
DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Design Basis and Challenges

plant loading
Plant Loading
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Hydraulic Loading:
  • Pollutant Loading:
effluent criteria
Effluent Criteria
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
design challenges
Design Challenges
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • An alternative method of disinfection
  • Nitrification
  • Technologies selected must integrate into the existing plant
  • Al2(SO4)3 for P removal must be reconsidered
  • Phase I design and layout must take into account space limitations for Phase II
slide8
DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Process Selection and Facility Design

pfd phase i
PFD – Phase I
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Primary Treatment

Secondary Treatment

Disinfection

Preliminary Treatment

Phase I Sludge Thickening

Existing Sludge Stabilization

plant layout
Plant Layout
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

(Courtesy of Google Maps)

phase i expansion
Phase I Expansion
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
phase i expansion1
Phase I Expansion
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Headworks

phase i expansion2
Phase I Expansion
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Primary Clarifiers

phase i expansion3
Phase I Expansion
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

BNR Bioreactors

phase i expansion4
DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
Phase I Expansion

Secondary Clarifiers

phase i expansion5
Phase I Expansion
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

UV Facility

phase i expansion6
Phase I Expansion
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Fermenter

phase i expansion7
Phase I Expansion
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Gravity Belt Thickener

hydraulic profile
Hydraulic Profile
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Conduit from Headworks

Outfall Pipe

L.L.EL. 79.66 m

Available head = 3.0 m

L.L.EL. 76.64 m

headworks
Headworks
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Headworks

headworks1
Headworks
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Installation of two 94 kW raw sewage pumps
  • Commissioning of third headworks channel
  • Commissioning of aerated grit tank
primary treatment
Primary Treatment
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Primary Clarifiers

primary treatment1
Primary Treatment
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Four (4) rectangular clarifier installation
  • Total Volume: 1960m3
    • BOD Removal: 30%
    • TSS Removal: 55%
    • HRT: 3.5h @ ADF
  • Chain & flight scum/sludge collection
secondary treatment
Secondary Treatment
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

BNR Bioreactors

process selection
Process Selection
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Activated Sludge with incorporated biological nutrient removal (BNR)
    • Reduced chemical dependency
    • Reliable effluent quality
    • Low sludge production
      • Sludge has higher levels of bioavailable nutrients
    • Reduced aeration requirements
    • Improved sludge settleability
    • Environmentally sustainable
process selection westbank
Process Selection: WESTBANK
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

VFAs

Influent

BNR Bioreactor

Secondary Clarifier

Secondary Effluent

ANOXIC

AEROBIC

PREANOXIC

ANAEROBIC

NMLR

WAS

RAS

equipment design
Equipment Design
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

40%

20%

40%

= Anaerobic = Anoxic = Aerobic

equipment design1
Equipment Design
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Mechanical Mixers

Fine Bubble Diffusers

= Anaerobic = Anoxic = Aerobic

equipment design2
Equipment Design
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Total Bioreactor Volume: 1,782m3
  • SRT: 12 days
  • HRT: 12.5 hours @ ADF
  • Average MLSS: 3,000 mg/L
  • Required VFA concentration: 15 – 25 mg/L

7.8%

8%

4.8%

79.4%

Mechanical Mixers

Fine Bubble Diffusers

= Anaerobic = Anoxic = Aerobic

secondary treatment1
DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
Secondary Treatment

Secondary Clarifiers

secondary clarifiers
Secondary Clarifiers
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Based on the solids loading rate
  • “Gould II” type clarifiers
  • Common sludge collector between sets of two clarifiers
disinfection
Disinfection
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

UV Facility

process selection1
Process Selection
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Provide additional hydraulic capacity and meet new compliance criteria
  • Selection between chlorination/dechlorination and UV disinfection
  • UV disinfection selected:
    • Effluent toxicity and safety issues with chlorination
    • Costs of two processes are becoming comparable
    • UV capable of the same process reliability, performance track record, and full automatic control capability
    • Minimal space requirements
design basis
Design Basis
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Open – channel, modular design with horizontal, LP-HI lamps
  • Design Objective: 100 E.Coli/100 mL at PDF
  • UV Transmittance of 65%

(Courtesy of Trojan Technologies Inc.)

uv facility design

Automatic Level Controller

∆ Water Level = 0.881m

PDC and Hydraulic Manifold

UV Banks

48 lamps/bank

UV Facility Design
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • UV Dose of 30 mW.s/cm2 using LP-HI lamps
  • 3 channels constructed: 1 Duty and 1 Redundant (equipped); 1 for Phase II (channel only)

Automated quartz sleeve cleaning system

Variable output electronic ballasts

(Courtesy of Trojan Technologies Inc.)

solids handling
Solids Handling
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Fermenter

fermenter
Fermenter
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Bio-P removal requires VFAs as a source of energy
  • Insufficient VFA supply during winter
  • Addition of a static fermenter will accomplish two goals:
    • Provide a source of additional VFA’s
    • Increase sludge solids concentration
fermenter schematic
Fermenter Schematic
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Influent Sludge from Primary Clarifiers

VFA

VFA

VFA

VFA Rich Supernatant to Anaerobic Zones

Effluent Sludge to Digesters

(Courtesy of www.gc3.com)

fermenter design
Fermenter Design
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Design Basis:
    • SRT required: 3-5 days
    • Sludge loading: 1517 kg/d or 36.8 m3/d (PMF)
  • Fermenter Design Summary:
    • Volume: 157 m3 (10 m diameter, 2 m tall)
    • Sludge solids concentration increased from 4% to 6%
    • Additional VFAs supplied to the BNR process: 11.2 mg/L
solids handling1
Solids Handling
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Gravity Belt Thickener

thickening
Thickening
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Construction of a new digester incurs large capital investments
  • Thickening can reduce the volume of sludge and allow the use of the existing digesters
  • Gravity Belt Thickener
    • Good control capabilities
    • High cake solids concentration
    • Relatively low capital and operating costs
gravity belt thickener
Gravity Belt Thickener
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

- Sludge

- Separated water

gravity belt thickener1
Gravity Belt Thickener
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Design Basis:
    • Peak solids loading: 13,784 kg/d
    • Peak hydraulic loading: 675 m3/d
    • Desired cake solids concentration: 7%
  • GBT Design Summary:
    • Length-Width-Height: 5.1 m : 1.7m : 1.5 m
    • Belt width: 1.2 m
    • Solids capture: ~95%
    • Polymer Usage: 2-4 kg/tonne of sludge
additional considerations
Additional Considerations

Phase II Conceptual Design

  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Noise & odour control
  • Septage receiving station
  • Backup generator
  • Phase II Conceptual Design

Phase II

Liquid

Facility

Courtesy of Envirocan

phase ii conceptual design
Phase II Conceptual Design
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Phase II

Solids

Facility

slide46
DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Process Control

highlights of process control
Highlights of Process Control
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Plant to be operated with minimum supervision required
  • Process Control will rely on automation and plant operators
  • Existing SCADA system is to be upgradedto include control in addition to monitoring

(Courtesy of Port Darlington WPCP)

moe requirements
MOE Requirements
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Compliance Sampling required by the MOE
  • (To be done by the operators)
process control
Process Control
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

1

2

3

4

5

6

  • Performance monitoring Sampling
  • (To be done by the operators)
process control1
Process Control
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

1

2

3

4

5

6

7

1

2

3

4

5

6

7

  • Automatic Monitoring and Control (SCADA)
slide51
DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Phase I

Economic Analysis

capital investment
Capital Investment
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Trade form with 16 Market Price Divisions
  • Detailed analysis for major equipment and concrete costs
  • Mark-ups, allowances and contingencies based on industry recommendations (Hussein, 2010)
  • Phase I estimation: $36 M
  • Accuracy within +50/-30 % for this conceptual level of design
capital investment1
Capital Investment
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

General Contractor’s Overhead & Profit

Engineering Services

Allowances and Contingencies

Basic Facility Cost

Total Project Cost= $36 M

capital investment2
Capital Investment
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

General Contractor’s Overhead & Profit

Engineering Services

Mechanical

Allowances and Contingencies

Electrical

Major Equipment

Basic Facility Cost

Retrofit/Upgrade Allowance

Concrete

Conceptual Design Contingency Allowance

Other

Total Project Cost= $36 M

o m costs
O&M Costs
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Labour

Electrical

18%

17%

Maintenance

Chemical

31%

34%

Total Annual O&M Costs= $927K

slide56
DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Recommendations

and Closing Remarks

recommendations
Recommendations
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Implement dechlorination in existing facility
  • Retrofit of existing plant to incorporate BNR
  • Increase hydraulic capacity of Headworks
  • Biogas capture and reuse
    • OPA Feed-in Tariff program (14.7¢/kWh generated)
    • Potential O&M Savings: $382 K /yr

0.25

0.2

closing remarks
Closing Remarks
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS
  • Phase I uses AS process with incorporated BNR and UV
  • Effluent will meet more stringent compliance levels
  • Economically feasible
    • Total Phase I Expansion Cost: $36 M
    • Annual Phase I Operating Cost: $927 K
  • Environmentally Sustainable
acknowledgements
Acknowledgements
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Dr. Manual Alvarez – Cuenca, Faculty Supervisor

Professor of Chemical Engineering – Ryerson University

Gisselly Anania, ConsultantAdvisor

Associate Project Manager – CH2M Hill, Water Business Group

Jeremy Kraemer

Associate Engineer – CH2M Hill, Water Business Group

Abu Hussein

Regional Estimator – CH2M Hill, Canada Region

  • WEAO Student Design Competition Sub - Committee
  • Vendors:
      • Rob AndersonH2Flow Equipment Inc.
      • Edward M. Pikovnik ENV Treatment Systems Inc.
      • Allen Vivian, Geoff CoatePro Aqua Inc.
      • Frank FerrieITT Water & Wastewater
      • Dale Jackson ACG Technology Ltd.
      • Darrin Hopper H2Flow Tanks & Systems Inc.
      • Michel Bruneau JohnMeunier Inc.
biological nutrient removal
Biological Nutrient Removal
  • Anaerobic Zone

P Release

VFAs

Energy

PHB

P

PAO

biological nutrient removal1
Biological Nutrient Removal
  • Anoxic and Aerobic Zones

O2 or NO3

CO2 + H2O

P

Energy

PHB

PAO

Cell growth

aerobic zone assumptions
Aerobic Zone Assumptions
  • 20% of the influent TSS are considered inert
  • 40% of the remaining TSS are non-biodegradable
  • 10% of the influent TKN is incorporated into the heterotrophic biomass
  • Heterotrophic organisms do not differentiate between forms of nitrogen in the wastewater
  • Autotrophic organisms do not assimilate an appreciable amount of nitrogen
  • Average sewage temperature of 15°C (minimum: 10°C; maximum 20°C)
sizing zones
Sizing Zones
  • Anoxic Zone
  • Anaerobic Zone
hydraulic profile equations
Hydraulic Profile Equations
  • Manning equation of head loss through open channels
  • Minor head losses through pipes
inclusions assumptions and allowances
Inclusions, Assumptions and Allowances
  • Equipment estimates are based on vender quotations or catalogue costs
  • Major Equipment Installation Costs: 30% of delivered major equipment cost
  • Major Equipment Costs: 15% allowance for equipment not included (eg: RAS, WAS, and primary sludge pipe, UV grates, etc.)
  • Allowances for the 16 Market Price Divisions: see Table D1.1 (Hussein, 2010)
  • Retrofit Allowance for building renovations and facilities that require significant tie-ins to existing facilities: 5% (Hussein, 2010)
  • Contractors’ Markup (Overhead and Profit): 15% (Hussein, 2010)
inclusions assumptions and allowances1
Inclusions, Assumptions and Allowances
  • Contingencies (Hussein, 2010):
    • Conceptual Design Contingency Allowance: 20% (Hussein, 2010)
    • Construction Contingency: 5%
    • Construction Escalation and Market Contingency: 3% each of total estimated
  • Engineering Services for Design and Construction Administration: 12% of total facility construction costs (Hussein, 2010)
  • Concrete:
    • $ 1100 / m3 (frame, concrete, rebar) (Hussein, 2010)
    • Allowances (Anania, 2010):
      • 7% for common channels
      • 20% for galleries and tunnels
exclusions
Exclusions
  • GST
  • Timeline escalation contingency
  • Non-competitive market conditions (i.e. shortage of materials, shortage of skilled labour)
  • Additional costs if construction is accelerated
slide82
DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

Process Control

process control solids
Process Control - Solids
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

1

3

2

4

5

  • Performance monitoring Sampling – Solids Handling
  • (To be done by the operators)
process control solids1
Process Control - Solids
  • DESIGN BASIS AND CHALLENGES
  • PROCESS SELECTION AND FACILITY DESIGN
  • PROCESS CONTROL
  • ECONOMIC ANALYSIS
  • RECOMMENDATIONS AND CLOSING REMARKS

1

3

2

4

5

  • Automatic Monitoring and Control – Solids Handling
  • (SCADA)
phase ii considerations
Phase II Considerations
  • New headworks facility
  • Four additional liquid trains (identical to Phase I)
  • Installation of UV equipment in 3rd chamber
  • Fermenter
  • Gravity Belt Thickener
  • Primary High Rate Anaerobic Digester