college of engineering · start task task day duration. excavation. 1 3 0. ber m constr uction. 1 4...
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Community Wastewater Treatment Park PresentationCollege of Engineering
Class Led by Dr. Paul Hanley
Kathryn LangenfeldAlexandro Colon
Bruce McWilliams
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This project was supported by the Iowa Initiative for Sustainable Communities (IISC), a program of the Provost’s Office of Outreach and En-gagement at the University of Iowa that partners with rural and urban communities across the state to develop projects that university stu-dents and faculty complete through research and coursework. Through supporting these projects, the IISC pursues a dual mission of enhanc-ing quality of life in Iowa while transforming teaching and learning at the University of Iowa.
Research conducted by faculty, staff, and students of The University of Iowa exists in the public domain. When referencing, implementing, or otherwise making use of the contents in this report, the following citation style is recommended: [Student names], led by [Professor’s name]. [Year]. [Title of report]. Research report produced through the Iowa Initiative for Sustainable Com-munities at the University of Iowa.
This publication may be available in alternative formats upon request. Iowa Initiative for Sustainable Communities Provost’s Office of Outreach & Engagement The University of Iowa 111 Jessup Hall Iowa City, IA, 52241 Email: [email protected] Website: http://iisc.uiowa.edu/
The University of Iowa prohibits discrimination in employment, educational programs, and activities on the basis of race, creed, color, religion, national origin, age, sex, pregnancy, disability, genetic information, status as a U.S. veteran, service in the U.S. military, sexual orientation, gender identity, associational preferences, or any other classification that deprives the person of consideration as an individual. The Universi-ty also affirms its commitment to providing equal opportunities and equal access to University facilities. For additional information contact the Office of Equal Opportunity and Diversity, (319) 335-0705.
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IOWA SMALL COMMUNITY WASTEWATER TECHNOLOGY PARK
Final Design
University of Iowa
Civil and Environmental Engineering
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IOWA HAS POOR SURFACE WATER QUALITY
www.danasrii.top/eutrophic-lake/serc.carleton.edu/microbelife/topics/deadzone/index.html
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SMALL COMMUNITIES LACK RESOURCES TO TREAT WASTEWATER CONVENTIONALLY
www.lacsd.org/wastewater/wwfacilities/moresanj.asp
https://www.linkedin.com/pulse/2015-wef-innovative-treatment-award-goes-algaewheel-louis-lefebvre
http://www.tpomag.com/editorial/2012/12/affordable_compliance
http://www.build-a-biogas-plant.com/covered-lagoon-digesters/
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IMPLEMENT POSSIBLE TREATMENT AT WW TECH PARK
Test technology to: Assess feasibility in Iowa’s climate
Optimize size
Optimize aeration requirements
Achieve possible denitrification
Meet water quality standards defined by: Iowa Nutrient Reduction Strategy
Iowa Department of Natural Resources
Iowa Water Environment Association
Gain Iowa DNR approval
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SITE AT IOWA CITY WWTP
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TEST SUBMERGED ATTACHED GROWTH REACTOR (SAGR)
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FLEXIBLE DESIGN TO ALLOW TESTING OF MULTIPLE VARIABLES
Aeration
Flow control
Valves to change flow
Water quality assessment collection points
Easily altered design to different test technologies
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OVERVIEW
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DEGRITTED, RAW WASTEWATER PIPELINE TO WW TECH PARK
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PUMPS
Located at beginning of pipeline
2 pumps in parallel
AMT 1-1/2”x1-1/4” Centrifugal Pump 2 HP
155-230 V
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HEADERBOX
Outflow Pipe for Discharge
Inflow Pipe
Outflow Pipe
V-notch weir
Concrete SlabKnife Gate
Grate
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PRIMARY LAGOON
• Dimensions:
• Hydraulic Residence Time (HRT) = 36.7 days• Goal: maximum 50 mg/L BOD in effluent
Length (ft) Width (ft) Depth (ft) Volume(ft3)
372 110 6 245,520
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SECONDARY LAGOONS
• Dimensions:
• 2 lagoons in parallel
• HRT = 30 days (DNR Specification)
• Goal: maximum 50 mg/L TSS in effluent
Length (ft) Width (ft) Depth (ft) Volume(ft3)
216 58 8 100,224
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SPLITTER BOX
• Purpose: water sampling after lagoon treatmentto ensure BOD and TSS are less than 50 mg/L
• Dimensions:
Length (ft)Width
(ft)Height
(ft)Volume
(ft3)
20 10 6 1,200
Flow in
Flow out
Flow in
Flow out
Flow Out Grate
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SAGR CELLS
•Dimensions:
• 2 cells in parallel• HRT = 24 hours (DNR
Specification)• Goal: lower BOD, TSS, and
nitrogen concentrations to effluent standards
Length (ft) Width (ft) Depth (ft) Volume(ft3)
42.3 26 8 8,795
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Secondary Lagoon
BLOWER SYSTEM
4 Blowers
Fine Bubble Diffusers in Primary
Lagoon
Coarse Bubble Diffusers in SAGR Cells
Valve Allow Airflow
Alteration
Flexible HDPE Piping
Primary Lagoon
Secondary Lagoon
SAGR Cells
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BLOWER
4 blowers
3-phase, 20 hp Positive Displacement Blowers
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DIFFUSERS
Fine Bubble DiffuserCoarse Bubble Diffuser
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COMPLETE LAYOUT
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COST ESTIMATE
Component EstimatedCost
PrimaryLagoon 181,610.00$SecondaryLagoons 136,160.00$
SAGRCells 20,000.00$
Headerbox 11,540.00$SplitterBox 4,910.00$
BlowerSystem 82,820.00$PipingandPumpingSystem 9,020.00$
Total 446,060.00$
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CONSTRUCTION TIMELINE
Duration EstimatedCompletionTime=60days
START TASK
TASK DAY DURATION
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Excavation 1 30
BermConstruction 14 7
Compaction 21 6
ClayLiner 24 3
PipeInstallation 3 50
HeaderboxConstruction 31 14
SplitterBoxConstruction 31 8
BlowerHouseConstruction 31 10
PumpInstallation 45 5
LagoonLinerPlacement 46 2
SAGRInstallation 48 7
SiteStartUp 55 6
IowaSmallCommunityTechnologyPark
DAYS
START TASK
TASK DAY DURATION
Excavation 1 30
BermConstruction 14 7
Compaction 21 6
ClayLiner 24 3
PipeInstallation 3 50
HeaderboxConstruction 31 14
SplitterBoxConstruction 31 8
BlowerHouseConstruction 31 10
PumpInstallation 45 5
LagoonLinerPlacement 46 2
SAGRInstallation 48 7
SiteStartUp 55 6
IowaSmallCommunityTechnologyPark
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
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QUESTIONS?