“Modern Collection System Headaches - Handling Modern Trash” – R. Domkowski 10/16/2015 1 “The New Wastewater: Impact of Modern Trash on Wastewater Collection and Treatment” Bob Domkowski Engineering Consultant Xylem, Inc. – Flygt Products October 20, 2015 Modern Trash: Current wastewater utility choices 2 Grind it Pump it Screen it TODAY’s NEWS Wet Wipes and Grease Make for a Mess in Charleston Sewers Disposable Wipes Not For Toilets Warns BV Utilities Grapple with Flushables City Plagued by Flushable Wipes NY: Class action lawsuit filed against wipes mfgs. Flushable Wipes Problematic for Rhode Island WWTPs Flushable Wipes Clogging Sewers says Halifax Water Flushable Wipes Blamed for Clogging City Sewers How many of you recognize photos like these? Flushable does not mean ‘Flow-able’!
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“Modern Collection System Headaches - Handling Modern Trash” – R. Domkowski
10/16/2015
1
“The New Wastewater: Impact of Modern Trash
on Wastewater Collection and Treatment”
Bob Domkowski Engineering Consultant
Xylem, Inc. – Flygt Products
October 20, 2015 Modern Trash: Current wastewater utility choices
2
Grind it Pump it Screen it
TODAY’s NEWS Wet Wipes and Grease Make for a Mess in Charleston Sewers
Disposable Wipes Not For Toilets Warns BV
Utilities Grapple with Flushables
City Plagued by Flushable Wipes
NY: Class action lawsuit filed against wipes mfgs.
Flushable Wipes Problematic for Rhode Island WWTPs
Flushable Wipes Clogging Sewers says Halifax Water
Flushable Wipes Blamed for Clogging City Sewers
How many of you recognize photos like
these?
Flushable does not mean ‘Flow-able’!
“Modern Collection System Headaches - Handling Modern Trash” – R. Domkowski
10/16/2015
2
Recent News Quotes:
• “85% to 90% of all backups seen today are preventable
and are caused by non-flushables”
• Jerry Ledbetter, Environmental Dept.. City of Claremore, OK
• “We take out 2 to 3, 5-gallon buckets of wipes every week
from each (sewage) pump station”
• Pete Jones, Ocean City, MD
• “Wipes are clogging up sewers like nothing else sewer
workers have ever seen!”
• Anne Heyden, San Antonio (TX) River Authority
• “It’s good news for me but bad news for the public”
• Scott Levin, Levin Pipe Cleaning Services
5
What To Flush Quiz… What were collection systems designed to convey?
• Toilet paper
• Flushable wipes
• Poop
• Paper hand towels
• Facial tissue
• Dental floss
• Toilet wand pads
• Pee
• Feminine hygiene items
• Cleaning wipes 6
What To Flush Quiz… What were collection systems designed to convey?
• Toilet paper
• Flushable wipes
• Poop
• Paper hand towels
• Facial tissue
• Dental floss
• Toilet wand pads
• Pee
• Feminine hygiene items
• Cleaning wipes 7
Only
3!
Modern collection system headaches
“Modern Collection System Headaches - Handling Modern Trash” – R. Domkowski
10/16/2015
3
New Wipes TV Advertising Campaign Ad co-mingles dry and wet products
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Typical “Modern Trash” Non-woven sheet goods
Typical manufacturing process: Needle punch
Thermal bonding
Spunlace (Plastic-based substrate)
Wet layup
New short fibers / mineral binders
Typical commercial products Baby / personal wipes
‘Swiffer’ wiping sheets
Dryer sheets
Toilet bowl cleaning wand pads
Personal cooling wipes (New)
3-4 new products monthly!
Wipes: 2004 – 2014 Market Sales
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($11Bn)
Overview of Current Actions
• Legal actions • Armstrong vs Costco Wholesale (NicePak)
• Honigman vs Kimberly-Clark
• Kurtz vs Kimberly-Clark (Class Action suit in NY)
The following is a review of a few of the numerous
successful projects where:
Pump clogging issues were eliminated
Significant operational savings were realized
Significant maintenance savings were realized
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Lumberton, TX – Municipal Utility District Recorded Energy Savings 2003 to 2010
Service area: 63 mi2 Population: 20,400
Energy Saving Project: City of Andalusia, AL
Riverside WWTP (3) 45-hp modern technology pumps
48.1% Engineer-recorded svgs
Central Lift Station (3) 85-hp modern technology pumps
(2) 45-hp modern technology pumps
56.1% Engineer recorded svgs
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U.S. DOE Block Grant – Dept. of Economic Affairs Project spec.: 25% energy savings is required of the contractor Failure to achieve: Reimburse $240,000 State of AL funding
Energy Saving Project Ypsilanti Communities Utility Authority (YCUA)
• Upgrading several large wastewater pump stations - Solve clogging issues / Improve hydraulic efficiency / Install ASDs
- Martz Road P.S. = > 30% energy savings
- Willow Run P.S. = > 30% energy savings
- Snow Road P.S. = > 40% energy savings
• Snow Road Pump Station - (5) 12-in, NT-3312 / 470-hp pumps Result: > 40% Energy Savings
- DTE Energy Savings Rebate Program awards YCUA: $65,378!
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“Modern Collection System Headaches - Handling Modern Trash” – R. Domkowski
10/16/2015
15
Modern Trash: Current wastewater utility choices
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Grind it Pump it Screen it
Grind It!
Current state
New tooth designs
Cuts to small squares
Minimizes rat tailing
Municipal quandary
If you grind it
Wipes removed with sludge
Ground apply issues
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Pump It!
Current state
Innovative technology designs
Horizontal leading edge
Self-cleaning hydraulics
Sustains hydraulic efficiency
Proven results
Manufacturer’s non-clog guarantee
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Screen It!
Current state
Perforated plate
0.25-in dia. holes
Continuous cleaning
Brush
Water jet
Bar screen
6-mm (0.25-in) space
Automatic cleaning
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“Modern Collection System Headaches - Handling Modern Trash” – R. Domkowski
10/16/2015
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Putting It All Together
‘Modern trash’ / non-woven sheet goods have became
the No. 1 enemy of collection and treatment systems
Public education so far seems to have a limited benefit 18%-20% reduction in mass of materials
Must maintain public awareness campaigns
Maintenance budgets are strained due to needs of
dealing with repeated equipment stoppages
Problem is getting worse each month
Proven solutions exist that delivers sustained
operational efficiency and greatly minimize maintenance