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1. How long will it take before the
sludge is dry enough to haul off?
There are several factors that influence the time it
takes to sufficiently dewater sludge. Chemical conditioning
is the key to optimum dewatering. Working with a polymer
supplier, bench tests are conducted to determine the best
polymer for dewatering the sludge. Once the product is
chosen, the dose is determined. Equally important is to
provide enough mixing in-line to assure that the polymer
attaches to the sludge particles to create a floc and allow
the free water to flow out of the Geotube® brand container.
The type of sludge or age of sludge can influence how fast
it will dewater. Well digested sludge will dewater more
quickly than raw sludge. Finally, the longer a client can
allow the sludge to remain on site and dry after the final
filling cycle, the drier the solids will become and the
greater volume reduction will be achieved.
2. How do I determine how many Geotube® containers
I need for my plant or my project?
If you complete our online form, we can tell you exactly
how many containers you will need. Please click
here
to complete our eight-question survey.
3. What happens if I fill the Geotube® container
higher than the design height?
Geotube® container design height is controlled by the
tensile strength of the textile with a 4:1 factor of safety.
Exceeding the design height could result in the textile
rupturing.
4. Can I dewater municipal wastewater treatment biosolids
without using polymer?
Yes, but the capture of solids won’t be as efficient and it
will take much longer to get sufficiently dry cake solids.
There is also a risk of masking off the pores of the
textile.
5. Can Geotube® containers dewater and contain
secondary sludge?
Yes, It will probably require a polymer to assist in
flocculation. This will result in very clean filtrate and
solids comparable to older mechanical dewatering technology.
6. Can Geotube® containers dewater and contain
primary sludge?
Yes, most installations use a polymer to assist in
dewatering allowing faster refilling and obtaining finished
solids sooner. Solids levels are usually equal or higher
than the traditional older mechanical methods.
7. What is the main reason to use Geotube®
containers?
Economic savings have been realized by every customer
using Geotube® technology over traditional dewatering,
remediation processes.
8. Can Geotube® containers contain contaminated
material such as PCBs?
Yes, Geotube® technology has been chosen by both
governmental agencies and private companies as the leading
way to safely contain most contaminants, especially PCBs.
Geotube® containers also provide the added protection
of aerating contaminants when processed through an older
technology of mechanical methods. Economic reasons are again
a key factor.
9. How do I find out if Geotube® containers are
right for our needs?
If you complete our online form, we can tell you exactly how
Geotube®
technology can help you. Please click
here to complete
our eight-question survey.
10. Can Geotube® containers dewater and contain
Alum sludge?
Yes, It will probably require a polymer to assist in
flocculation. This will result in very clean filtrate and
solids comparable to older mechanical dewatering technology.
11. Can Geotube® containers dewater and contain fly
ash?
Yes, It may need a polymer to assist in flocculation is the
ash is very fine and light such as wood ash. Most coal fly
ash has dewatered without polymers to very high solids.
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