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Final Torrington WWTP Design Presentation
1
Background
Introduction
Outline
Problem Statement
- Current Torrington WWTP will not be able to meet upcoming regulations
Torrington Wastewater
Treatment Plant
- Introduction
- Problem Statement & Purpose
- Design Goals
- Background
- Selection of Design Goals and Criteria
- Selection of Alternatives
- Treatment Options
- Five Alternatives
- Scoring of Alternatives
- Benefit Analysis
- Cost Analysis
- Cost-Benefit Analysis
- Final Design
- Recommendations
- Conclusion
Project Methodology
Complete Design
Design Criteria
Selection Of Alternatives
Selection of Design Goals and Criteria
Treatment Options
Design Goals
1. Improve the water quality of the effluent discharged into the North Platte River
2. Design a highly operable WWTP
- Preliminary Treatment
- Primary Treatment
- Secondary Treatment
- Tertiary Treatment
- Disinfection
- Solids Treatment
3. Reach stakeholder consensus by meeting all client and public requirements
4. Decrease the quantity of residual solids within treatment processes, and sufficiently treat the remaining solids to be recycled or safety disposed
5. Design a low-cost and high-benefit solution that achieves all other goals
Ben Collamer, HCH Engineering Owner & Design Engineer
Britton Hammit, Project Manager
Josh Harkins, Lead Engineer
Recommendations & Pretreatment
Recommendations:
- Industrial Pretreatment
- Heavy Metal Removal at Water Treatment Plant
Alternative 2
Benefit Scoring
Alternative 1
Alternative 3
Oxidation Ditch with Membrane Filtration
- Criteria
- Removal Efficiencies
- Scoring Example
- Benefit Scoring Summary
Oxidation Ditch with Gravity Sand Filter
5 Stage Bardenpho
Criteria
Removal Efficiencies
Alternative 1 Scoring
Complete Alternatives
Alternative 4
Alternative 5
Benefit Score Summary
A20
Aerated Lagoons with Gravity Sand Filter
Conclusions
Recommendations
- Implement Grit Chamber in Short Term
- Consider Upgrading Lagoon System
- DO Monitors
- Variable Blower System
- Introduction
- Problem Statement & Purpose
- Design Goals
- Background
- Selection of Design Goals and Criteria
- Selection of Alternatives
- Treatment Options
- Five Alternatives
- Scoring of Alternatives
- Benefit Analysis
- Cost Analysis
- Cost-Benefit Analysis
- Final Design
- Recommendations
- Conclusion
- Require Heavy Metal Treatment at Water Treatment Facility
- Require Industrial Pre-Treatment
Lift Station and Pump
Cost Benefit Analysis
Final Design
Cost Summary
Cost & Benefit Summary
Questions?
Contact Information:
Cost & Benefit Summary
HCH Engineering: hcheng@hch.com
307-710-8668
Ben Collamer: bcollame@uwyo.edu
Britton Hammit: bhammit1@uwyo.edu
Josh Harkins: jharkin2@uwyo.edu
References
Photo From Google Maps
http://cnbsa.org/?page_id=344
Vortex Grit Chamber
1. Evaluate current operations at Torrington WWTP
2. Identify alternatives to meet future regulations
3. Compare alternatives
4. Provide a final recommendation with design details
- Outdated treatment system
- Preliminary Treatment
- Continuous Blower System
- Finishing Pond
Lagoon System
SAGR
Sum(Scores) = Overall Score
Backwash Gravity Sand Filter (1)
Backwash Gravity Sand Filter (2)
UV Disinfection
http://www.dewatering-press.com/sale-1869203-gravity-belt-thickener-liquid-filter-press-for-mining-industry.html
Finishing Pond for Flow Regulation
Cascade Aeration and Discharge to North Platte River
BOD Score Calculation
(100%-98.5%)
__________
= 0.14
*(0.15)
(100%-85%)