The Metro W o Wastewater er R Reclam amation on D District - - PowerPoint PPT Presentation

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the metro w o wastewater er r reclam amation on d district
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The Metro W o Wastewater er R Reclam amation on D District - - PowerPoint PPT Presentation

Nov 07, 2022 283 likes •430 views

The Metro W o Wastewater er R Reclam amation on D District Airfl flow and Od Odor M Mitigati tion Plan f for Delga gany Inter tercep eptor S System em Jim McQuarrie, Director of Strategy and Innovation Robert W. Hite Treatment

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SLIDE 1

The Metro W

  • Wastewater

er R Reclam amation

  • n D

District

Airfl flow and Od Odor M Mitigati tion Plan f for Delga gany Inter tercep eptor S System em

Robert W. Hite Treatment Facility Outfall Facility Jim McQuarrie, Director of Strategy and Innovation

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SLIDE 2

Water er P Pur ure e or P Polluted ed?

Denver P Post - November er 18, 18, 196 1969

Althoug ugh h the S South P h Platte R River t throug ugh Denver er is grea eatly i improved ed f from t the e open en sew ewer it o

  • nce

e was, the r e river er a at the n e north city ty limits ts doesn’t ’t sp sparkle. . Here, , streaming hot water e enters rs the d dirty ri river f fro rom a meat p packing plant.

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SLIDE 3

Metro District – Product of Regional Collaboration

  • Formed in 1961
  • Transmission and Treatment

Services

  • 2 million people served (est.)
  • 715-square mile service area
  • 38-member Board of Directors

Member Agencies and Special Connectors

Rocky Mountain Arsenal Denver International Airport

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SLIDE 4

20th

th Ce

Century I Infrastructure I Investments

1965 1965-ish

Source: Colorado Division of Local Government, Demography Section

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SLIDE 5

20th

th Ce

Century I Investments –Rober ert W

  • W. Hite T

e Trea eatmen ent F Facility

2016 2016

Source: Colorado Division of Local Government, Demography Section

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SLIDE 6

Transmission System

  • Sanitary sewer (no stormwater)
  • 260 +/- miles of large-diameter pipe
  • 8-inch to 90-inch diameter
  • Oldest from 1890
  • Mostly gravity flow – only 3 lift stations

South Platte Interceptor construction tunneling equipment City Sewer in North Denver likely Delgany

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SLIDE 7

Delgany Interceptor System on NWC Site

I-70 DGC Interceptor Siphon (1977) Delgany Interceptor (1979 – RCP)

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SLIDE 8

Odor a associated with Wastew ewater

  • Hydrogen Sulfide (H2S)
  • Biological breakdown of Proteins/Amino Acids during conveyance
  • What does it smell like?
  • We can notice it at low concentrations
  • 0.000013%
  • Not dangerous outside of the sewer
  • Stay out of sewers!
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SLIDE 9

9

Historical Complaints

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SLIDE 10

MODELING RESULTS OF TRANSMISSION SYSTEM

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SLIDE 11

IDEAL ODOR INTERCEPTION AND TREATMENT LOCATION

11

ODOR CTRL HERE

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SLIDE 12

WHAT DOES AN ODOR TREATMENT SYSTEM LOOK LIKE?

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SLIDE 13

Objectives for a Proactive Odor Control Strategy

  • Developed a road map for odor control in

Transmission System

  • Integrate recommended odor mitigation

strategies into capital project planning

  • Consider staff safety, comfort, and worksite

conditions

  • Minimize complaints and maintain the Metro

District’s good neighbor status

Characterized

Technologies Management Plan Commitment

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SLIDE 14

Thank y you for r your i r interest! Public I Information - Kmerritt@mwrd.d .dst.c .co.u .us