Frank Dick, P.E. City of Vancouver, Department of Public Works - PowerPoint PPT Presentation

Frank Dick, P.E. City of Vancouver, Department of Public Works

Frank’s Reason

Costs Three Large Pump Stations (From 2008 – 2013) • $ 78,000 annual maintenance • $ 30,000 annual electricity • $ 650,000 new pumps • $ 31,000 annual disposal

Toilet Paper after 40 seconds “Flushable” Wipe after 16 hours Non-Dispersibles - 6

Claims / Disclaims Travel My time my dime NACWA Work Off Time City of Vancouver Interpretations, Opinions are Mine NACWA - WEF - APWA International Organizations Manufacturers

Characteristics of Wipes and Stuff in Sewers Working with Stakeholders (mfrs and WW) International Water Services Flushability Group Disintegration and the Reynolds Number Better Labeling and Information (Code of Practice) Other U.S. and world efforts

What We Find in Clogs (Paper / fiber products)

16

Jargon INDA – non-wovens industry trade group GD3 – Guidance Document 3 rd edition of Flushability Guidelines (FG) GD4 – Guidance Document (4 th Edition) TWG – Technical Workgroup MPT – municipal pump test SB – slosh box SFM – simulated fecal matter ISO TC 224 WG 10 IWSFG – International Water Services Flushability Guidelines WOW – World of Wipes

What Wipes are Made of and Their Properties Cellulose / pulp fibers Rayon or Lyocell – regenerated cellulose fibers Typically put together using spunlace method. Spunlace product after pump

Wet Inside Package Water based solutions to stabilize structure / strength Lotions and additives

When and Wear a Wipe Breaks Apart Hits water – chemical / ion trigger Toilet – mechanical forces Flow through sewers – hydraulic/mechanical forces Pumps – mechanical forces (too late) Screens – mechanical forces Never

Dry & Wet Strength

Dealing with Manufacturers Costco Meeting - 2013 Technical Workgroup - 2014 GD4 – 2015 to 2016 ISO – 2014 – 2016

Dealing with Manufacturers Costco Meeting - 2013 No Way! Agree to improve DNF on baby wipes

Dealing with Manufacturers

Dealing with Manufacturers Costco Meeting - 2013 Technical Workgroup - 2014 GD4 – 2015 to 2016 ISO – 2014 – 2016

Findings TWG - 2014 GD3 currently - screen against high wet strength wipes Flushability Guidelines if modified could produce a claim for a flushable nonwoven wipe Slosh Box and Municipal Pump Tests priority for modification

Dealing with Manufacturers Costco Meeting - 2013 Technical Workgroup - 2014 G uidance D oc rev 4 – 2015 to 2016 ISO – 2014 – 2016

Dealing with Manufacturers

GD4 Focus - 2015 01 Toilet and Drainline 02 Slosh Box Disintegration 03 Household Pump 04 Settling 05 Aerobic Bio-Disintegration 06 Anaerobic Bio-Disintegration 07 Municipal Pump

INDA 7 Tests Toilet and Drainline Disintegration Test Household Settling Clearance Slosh Box Pump Municipal Anaerobic Aerobic Pump Biodisintegration Biodisintegration Test

Pump Power Increases with Clogged Flushable Wipes 3.50 Code 30 Code 30 15% Code 31 Really Bad 10 % Code 31 – Not GD3 BAD, but GD3 Code 32 Compliant Code 32 3.25 Compliant Code 33 Code 33 Code 34 Code 34 Power kW Code 35 3.00 Code 35 Dutch Code 36 Code 36 Better, but still Code 37 not dispersible Code 37 Code 38 1% 2.75 Code 38 These are acceptable Code 39 2.50 0 175 350 525 700 875 Time sec

Test Conditions & P/F Endpoints Current INDA GD3 WW Proposal GD4 Flygt 3hp pump No change Pre-soak 1 hour Pump 10-sec intervals; 6 min Test Average percent power increase Average power increase max 1% NTE 15% with no spike point over 5% 2L 26 RPM 4L 13 RPM Slosh Box 180 minutes slosh time 30 minutes slosh time > 25% of mass pass through 12.5 No pieces > 1” in any direction mm sieve

Dealing with Manufacturers International Organization for Standardization TC 224 – Service activities relating to drinking water supply systems and wastewater systems. WG 10 - Flushable products Stakeholders including WW and MFRs Set out to develop flushable standards . . . No consensus / No standards . . . Instead there is: Technical report – EXPECTED LATE 2018

Dealing with Manufacturers Costco Meeting - 2013 Technical Workgroup - 2014 GD4 – 2015 to 2016 ISO - 2014 – 2016

Product Stewardship Code of Practice Reduce consumer confusion Encourage mfr and retailer participation Encourage proper disposal Labeling – sizing & location Decision Tree for Labeling (& claim of flushability ) All baby wipes to be labeled Do NOT Flush (logo) regardless of flushable Diameter

Dealing with Manufacturers Costco Meeting - 2013 Technical Workgroup - 2014 GD4 – 2015 to 2016 ISO – 2014 – 2016 Just WW People Worldwide IWSFG - 2016 - 2018

IWSFG International Water Services Flushability Group WWW.IWS W.IWSFG FG.ORG .ORG United States Australia Canada New Zealand Japan Spain The criteria for flushability and test methods are a global consensus of the members and reflect the hyd ydraulic, , mec mecha hanical and en environmental conditions of drain lines, on onsi site te treat atment syste tems, wa wast stewat ater r col ollection and treat atment syst stems, and the rec eceiving wa wate ters rs for treatment plant effluents.

IWSFG International Water Services Flushability Guidelines Specifications for Flushability Encouraged for national, regional and local governments - Claim of flushability - Labeling for bathroom / toilet products “Do NOT Flush”

IWSFG International Water Services Flushability Group 2016 – International Statement Summer 2017 - First draft flushability specifications Winter 2018 – Second draft Received several hundred comments FINAL specifications – June 2018

IWSFG International Water Services Flushability Guidelines Toilet Clearance – 3 flushes, no plunger Drain Line Flow Clearance – 5 flushes to clear Disintegration - Settling – 20 min to settle; no buoyancy Anaerobic Biodisintegration – Absence of persistent metabolites; residue pass through 600 um sieve Fiber Analysis – no plastic fibers New!

IWSFG International Water Services Flushability Guidelines Slosh Box Oscillating Box – 18” x 12” x 12” 11º angle 4 Liters 16 rpm 30 minutes Pass through 25 mm perforated sieve (2 min rinse)

IWSFG International Water Services Flushability Guidelines Labeling & Code of Practice On the Face of Sales Packaging: Clear & visible statement: “This product is not flushable and should be disposed of by alternative means” DNF Label 2cm x 2cm

UK Ventured on Its Own – Water Industry Standards “WIS”

INDA May Publish GD4 SOON! without Wastewater Consent

On-Hold Mfr Lawsuit

Lawsuits & Rulings Individual and Class Action Ohio New York Minnesota FTC – 2014 Australia – Last Week !!!

Slosh Box – Reynold’s Number Correlation Re = R h V ρ / µ Ratio of inertia force, and viscous (friction) force

Re 20,000

South Interceptor 1.7 fps 31 min (2,816 ft)

Fatih’s Re Number Graphic - Flasks

Fatih’s Re Number – Slosh Box

Fatih’s Re Number – Slosh Box

3 P’s (4 if you count puke)