This manual covers how to operate CST devices. The capillary absorption timing method is a reliable sludge filtration evaluation method. This equipment was originally used to treat sewage sludge. However, CST technology can be used in any colloidal water suspension. In the petrochemical industry, CST technology is used. To assess the degree of contamination of the slurry.
CST is the time required for a known volume of suspension to be filtered out due to the capillary absorption pressure produced by standard CST filter paper. The CST test unit includes:
CST tester
CST test seat
Long pipe
Short dosing tube
Experimental procedure
Sample preparation
1. During the sample preparation process, the sample and the overall sludge sample must be homogenous and representative of the overall sample.
2. Large objects in the sample should be removed and the sample filtered using a 5 mm mesh.
3. In order to reduce the sample's denaturation due to temperature, the sample temperature should reach room temperature before the test.
4. Sludge samples should not be stored for long periods of time as biodegradation can affect test results.
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