          
Furrow Pump, Inc.
P.O.
Box 1849
8525 SW
St. Helens Dr.
Wilsonville,
OR 97070
Phone:
(800) 937-3666
FAX:
(800) 377-9960
www.furrowpump.com
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Mixmate®
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Here is one
solution for each of the sets of application answers given on the previous page.
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| I. Waste Water Treatment |
| At 1 MGD, 5 ppm is 5 gallons of neat
polymer in 24 hours — 3 MGD would mean 15 gallons of polymer. To make a 1 % polymer
solution, you’d need 1500 gpd of water (divide by 24 and 60, or 1440, to get 1.04
gpm). Check the tables on page two of the Specifications, and the shaded boxes indicate a
1/8" nozzle and 3/8" mixer. Emulsion polymers generally require both primary and
dilution flowmeters, typically of the same size to achieve a 0.5 % final product
concentration. The Model Numbering Guide gives a part number for the MixMate as a
M032-322-XXX.* |
| II. Municipal WWT |
| At 10 MGD, 10 ppm is 100 gallons of
neat polymer in 24 hours. To make a 5 % solution you’d need 20 times as much primary
dilution water — usually a single flowmeter is adequate for a solution polymer. With
2,000 gpd of water you’d have 1.39 gpm. The tables indicate a 1/8" nozzle and
3/8" mixer — you might need to swap out to a 1/4" nozzle if the actual
pressure loss is too great, since you only have a 25 psi differential to work with. This
system would benefit by having the pressure gauge option. The Numbering Guide shows a
M032-313-XXX. |
| III. Municipal WWT |
| At 100 MGD, 1ppm is 100 gpd of
polymer, or 4.2 gph. The primary water would be 420 gph, or 7 gpm, for a 1 % solution.
Emulsion polymers typically need two flowmeters, so with a 50 % secondary dilution two
1-10 gpm units would be best. Please note that at 50 MGD you would be dipping into the
lower (and less efficient) half of the flow range, so you might try to encourage the
customer to run a bit higher secondary water dilution rate to keep up the overall system
flow rate (and thus the flow velocity through the mixer). The tables and Guide indicate a
model M102-425-XXX. |
| IV. Gravel Pit WWT |
| Heavy suspended solids can call for a
lot of polymer. At 5 MGD, 100 ppm is 500 gpd of polymer (the quickest solution is
sometimes looking at 100 gpd for 1 MGD, then multiplying by the actual GPD number). At 1
%, the primary water would be 34.7 gpm, and with an emulsion that would call for two
20-100 gpm flowmeters. If they really run as low as 1 MGD, the application may call for
some custom plumbing and flowmeters, or it may be enough to keep the secondary flowmeter
rate high. The tables show the best nozzle is 3/4" and the best mixer 2". The
model number would then be a M202-626-XXX. |
| * XXX = Option Choices |
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