HomeMy Public PortalAbout11-07-1961November 7>, 1961
The following is a, recomendation from the industrial
committee of a"edina Village to the Planning Commission
of Medina Village:
That consideration be giver to the feasibility, costs, and
possible locations for an aercbic sewage system W th detention
pond for the village.
An aerobic type sewage disposal system operates with
the use of aerobic bacteria. These bacteria differ from
those in regular cesspools and septic tanks In that they
need air to survive, and the gore air they receive the
faster they work.
The raw sewage is piped into a large tank. Compressed
air is forced into the tatak which forces circulation of the
sewage. The sewage is acted upon by the bacteria at a faster
result with the compressed air. A run off pipe is is used at
the end of the cycle and the partially treated sewage is put
Into a settling tahk cohere the heavy material settles and is
pumped back into the circulation tank for additticnal treat-
ment. EYNX An overflow from the settling tank is treated
with chlorine and drained into a detention pond. At this
point the sewage is 90+% pure,. In the detention pond Lhe
nitrates are disposed of by a' gestagrowth An overflow from
the detention pondcan be drained into any stream or lake
with no adverse effects (See attached sketch) Some of
the establishments using their type of sewage disposal plan
are: Minnetonka High School, Mound Junsor High, and the
Dayton Trailer Court°
The industrial committee feels that due to the relatively
low expense of the aerobic sewage system, a plan could be
worked out for future development of a series of taese through-
out Medina. Village.
As an enticement: to industry we feel that considering
the cost of one of these :sewage; plants we could offer any
industrial concern sewage faciLities if they build an
establishment of an assessed valuation large enough to cover
the Initial cost in taxes within a reasonable time. A special.
assessment `'or sewer would be necessary also in addition to
real estate taxer brought In. This sewage plant could then
serve the entire area of ether industrial., commercial, and
resMentiaat ftrxtkat designed for that plant.
Important factors in the economy of teis system are:
Additional tanks can be added to the system as needed. These
will not require rebuilding but lust adding. The natural
topography of the land can be used to develope the piping
system and the pond system.
Ai
Soll;e of the problems the planning Corrnisslon will face
will be: To decide how many and which locations are needed
to service the entire village, slihat necessay as7,essed
valuaLion will be needed to cover the cost of one of
these systeme. How thls plan will work ir with the Metro-
politan Sewage Plan of the area.
Information may be obtained from:
Harold L. Winterhalter (In a limited Quantity)
Mr. Smith -Minnesota Department of Health, Water Pollution Div,,
Mr. BrUCe Kelley - Kelley end Kelley of Long Lake
Sketch of the aerobic §ewage disposal oyetew;
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