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Water and Wastewater Plant Directory
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Essex Junction, Vermont, USA
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Essex Junction Wastewater Treatment Facility
2 Lincoln Street
Essex Junction, Vermont, 05452
USA
Contact Information:
Contact: James Jutras, Plant Director
Email:
ejctwwtf@sover.net
Telephone: 802-878-6943
Fax: 802-878-6948
Plant Operation: Municipal
Processing: Wastewater
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Web site:
http://www.essexjunction.org/WWTF/wwtf.htm
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Plant/Process Description:
The treatment facility combines primary and
secondary treatment processes to remove over 90%
of those same pollutants from an average of
3,100,000 gallons per day of household type
wastewater.
The combined wastewater flows into the headworks
where screens remove solids. Next the aerated
grit chamber agitates the flow and causes the
large particles such as sand, grit, or glass
shards to drop out where they can later be
collected.
The wastewater passes into the two flow
equalization chambers where it is mixed with
other process waste streams. These chambers add
dissolved oxygen to the wastewater and keep the
flow heading into the plant at a constant
rate.
In the next step the wastewater is sent on to the
two primary clarifiers, each 58 feet in diameter
and 16 feet deep. Here the flow slows and no
further air is added. This allows gravity to work
at settling out the finer solids.
The aeration chambers are the first step in
secondary treatment. These two 85 foot long
chambers are 18 feet deep. On the bottom of the
chambers air is forced through pipes covered with
ceramic diffusers. The water is filled with
millions of fine bubbles. Microscopic organisms
(bugs) utilize the oxygen to breathe while they
consume organic material in the waste
water.
From the chambers the wastewater passes into the
secondary clarifiers. The flow is slowed
significantly here. Sludge is separated from the
liquid in these two 65 food diameter chambers.
Some sludge is wasted to the digester, while the
rest is returned to the aeration chambers. The
wastewater leaves the secondary clarifiers
looking much clearer.
In the last building it is passed through a
traveling bridge sand filter. This step helps to
remove finer particles and other suspended solids
from the wastewater. The water is then
chlorinated to remove bacteria.
The flow moves into the chlorine contact
chamberswhere it will remain for at least 15
minutes. These long narrow chambers give the
chlorine time to react with the water. In the
last stages the water is dechlorinated with
sodium bisulfite. The final effluent is now
ready to be recycled into the Winooski
River.
Sludge
These two sludge digesters utilize heat to
decompose and stabilize biosolids. Dangerous
bacteria are killed in the process and methane
gas is produced. The methane gas is used to fuel
the digester process heater. Any extra methane
gas produced is flared off. Plans are in place to
recycle all the methane produced at the plant to
turn a generator and reduce electricity
costs.
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Owner:
Village of Essex Junction
Web site:
http://www.essexjunction.org/
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Operating Company:
Village of Essex Junction
Web site:
http://www.essexjunction.org/
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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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