Transcript of Wastewater Treatment & Collection System Improvements.
- Slide 1
- Wastewater Treatment & Collection System Improvements
- Slide 2
- Treatment Plant Improvements Replace aged infrastructure
Increase hydraulic and organic capacity Provide new technology to
address facility compliance challenges Provide ability to divert,
hold and return influent flow during high flow events
(precipitation, snow melt, etc.) Convert the WWTP from a seasonal
discharger to a continuous discharge
- Slide 3
- Summary of Improvements New head works (screening/grit removal)
Conversion of Lagoon #4 to excess flow basin Install new septage
receiving station Install new Oxidation Ditch & refurbish
existing Oxidation Ditch Provide two new final clarifiers Provide
new ultraviolet disinfection system for plant discharge New final
effluent cascade aeration New plant electrical system including new
standby generator
- Slide 4
- Construction Status Estimated date of substantial completion
January 1, 2015 Difficult winter construction period Due to
increased efforts this spring back on estimated schedule
Challenging site access conditions (thank you to our
neighbors)
- Slide 5
- Construction Progress Electrical bank New Oxidation Ditch Two
new clarifiers Septage receiving building Pictures
- Slide 6
- WWTP Entrance Road
- Slide 7
- Existing Oxidation Ditch left foreground New Oxidation Ditch
Right foreground Two New Final Clarifiers - Background
- Slide 8
- New Oxidation Ditch reinforcement steel
- Slide 9
- New Oxidation Ditch
- Slide 10
- North Final Clarifier
- Slide 11
- Electrical Equipment
- Slide 12
- Interim Operations Plan Period: June1 August 31 Both Oxidation
Ditches out of service (constructability) WWTP will store influent
in 3 existing lagoons September 1 existing oxidation ditch will
return to service, resume active treatment of influent flow to
plant As influent flow volumes allow redirect stored influent
wastewater back through active oxidation ditch process
- Slide 13
- Slide 14
- Interim Ops Plan Pros Takes place during normal no discharge
period Expedites construction Most efficient method of facility
completion Best available treatment season for lagoon activity
Working with non-domestic users to minimize discharge to WWTP Cons
No mechanical facility treatment Odor generating potential Storage
volume availability Extended period to treat accumulated
influent
- Slide 15
- Collection System Improvements New main pump station (PS #16)
replaces PS #6 Replace PS #4 with new PS #4 Sewer
rehabilitation
- Slide 16
- New PS #16
- Slide 17
- Slide 18
- New PS #4
- Slide 19
- Slide 20
- Sewer Rehab Work
- Slide 21
- Wastewater Treatment & Collection System Improvements
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