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Water and Wastewater Plant Directory
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Whistler, British Columbia, Canada
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Whistler Wastewater Treatment Plant
1001 Highway 99 N
Whistler, British Columbia, V0N 1B4
Canada
Contact Information:
Contact: David Sivyer
Email:
wwtp@whistler.ca
Telephone: (604) 935-8384
Fax: (604) 935-8389
Plant Operation: Municipal
Processing: Wastewater
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Web site:
http://www.eocp.org/wwtp.html
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Plant/Process Description:
The Resort Municipality of Whistler operates one
of the most advanced wastewater treatment
facilities in British Columbia. The process
includes primary, secondary and tertiary
treatment using ferrous chloride for phosphorus
removal. The treated wastewater meets all the
requirements of the Ministry of Environment
including receiving water standards for
recreational use.
Liquid Flow
Wastewater from the RMOW trunk sewer enters the
influent pump station. Pickle liquor is added to
the wet well to aid in the settling and removal
of phosphorus. Three 80 hp pumps lift the
wstewater to the headworks area. Mechanical bar
screens them, removes rags, plastics and other
debris and grit separators remove the grit from
the wastewater.
The wastewater flow passes through the primary
sedimentation tanks where heavy particles sink
and are raked to the sludge sumps for removal to
the ATAD digesters. Floating lighter materials
are skimmed off and discharged to a skimming tank
for disposal.
The wastewater is then distributed over the
plastic media in the trickling filter. Here
dissolved organics are absorbed onto the growing
biomass. Excess sloughed off biomass and the
liquid wastewater are then pumped to the solids
contact tanks.
The cloudy trickling flilter effluent is mixed in
the solids contact tanks with return biological
solids from the secondary clarifiers. The contact
occurs for 10 to 20 minutes before settling is
again provided in the clarifier. A portion of the
settled solids are returned to the solid contact
tanks to be remixed with the trickling fliter
effluent, with the rest wasted to the front of
the plant to be removed with the primary
solids.
The secondary clarifier effluent is then dosed
with chlorine and contacted in the chlorine
contact tank for 60 minutes to ensure
disinfection. Sulphur dioxide is injected at the
tank discharge to remove all free chlorine. The
treated wastewater is then discharged to the
outfall in the Cheakamus River.
Solids Flow
The Whistler Wastewater Treatment Plant uses the
state of the art autothermal thermophilic
digestion process (ATAD) for solids
stabilization. This process produces a high grade
retail use biosolids which meets EPA 503
standards.
The primary and waste biological solids from the
primary sedimentation tanks are pumped to the
ATAD for digestion and high temperature
pasteurization. Treatment is coordinated in the
four ATAD digesters. Solids are volatilized by
over 50% at temperatures above 55C, producing a
thin brown slurry of high nutrient value and
minerals.
The digested solids are then cooled and dewatered
to a dry cake by the 2-metre belt filter press.
The dewatered solids are then used for topsoil
production, forest application or for cover
material at the landfill. In winter, the
biosoleds are stored in a covered building for
later use in the summer season.
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Owner:
Resort Municipality of Whistler
Web site:
http://www.whistler.ca/
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Operating Company:
Resort Municipality of Whistler
Web site:
http://www.whistler.ca/
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Directions:
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Disclaimer:
Water and Wastewater.com provides the information on
this page for reference purposes only. We do not certify
the accuracy of the information provided by third-party
individuals for this listing.
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