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For more info:
JSi@jsits.com
경기도 안양시 동안구 호계동 555-9
안양 국제 유통단지 17동 127호
Tel :
(031) 479-4211/2,
Fax :
(031) 479-4213
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Frozen Image Centrifuge
Description
The Frozen Image Centrifuge allows a
measurement of sludge compressibility to be obtained in a quick and easy
manner. The degree to which a compressible sludge will thicken depends on the
individual particles that make up the sludge. If the particles are rigid, the
maximum solids concentration is achieved with the particles close packed. But
with a flocculent sludge, the flocs will break down and the particles will
become compacted, releasing water in the process. It is the compressive forces
created by the overlaying particles that causes the flocs to fragment.
Thus the
degree to which a sludge is compressed depends on the height of the sludge
blanket. The Frozen Image Centrifuge provides an enhanced method for simulating
the compressive force. As an example, sludge subjected to 50g force for 5
minutes is the equivalent to the same sludge in a 3.5m deep thickener for one
day.
The effect of
chemical additives can be rapidly gauged at different effective compressive
forces and with different sludge conditions.
Test
Method
A sample of known solids concentration is placed in the
centrifuge and rotated at the correct speed for the simulated pressure. At
discrete times the position of the sludge -supernatant interface can be
recorded. The centrifuge is equipped with a flash unit that is synchronised to
the position of the sample, this allows the interface to be recorded without
interrupting the test.
Technical
Specification
- Two samples
holders
- Synchronised
strobe
- Centrifugal accelerations
of 10g to 100g with motor speed fully variable between 300 and 1000
rpm.
- Mains input of either 115V
or 230V 50/60 Hz
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