TenCate Geotube RDT Guia De Inicio Rapido página 4

A Fast and Easy Way to Evaluate Sludge Dewatering and
Polymer Selection
The Geotube ® RDT (Rapid Dewatering Test) is a fast and easy test to determine how well a
sludge sample dewaters through the Geotube
•
Evaluate the efficiency of the candidate polymers
•
Measure the volume of effluent filtered from the sludge
•
Record the time for filtration
•
Analyze the quality of effluent water
Step 1
Measure 100ml of water into cups in which to
make down polymer solution. This is usually
an ample amount to conduct several 1-liter
sludge tests. If sludge sample is high in
solids by weight, a higher dose of polymer
will be required.
Step 2
Make down neat polymer into 1.0%, 0.5%,
0.3%, or 0.25% solution by adding neat
polymer to each cup of 100ml of water. Make
down charts are available from TenCate
Vigorous shaking or mechanical mixing is
required to invert the neat polymer into
solution. If using an electric hand mixer, mix
for about 10-15 seconds only. Allow the
polymer solution to age for 15-20 minutes
before adding polymer solution to the sludge
samples. Repeat this make down procedure
with other candidate polymers being tested.
Step 3
Assemble the RDT test kit by inserting a
3.75 in. (9.5 cm) diameter piece of Geotube
GT500 fabric into the plastic funnel. Assemble
funnel and place on top of the collection
beaker.
4 I
® GT500 textile. The test is designed to:
TM .
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