Filterability Test - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

newterra ltd.
1291 California Avenue, Brockville, ON K6V 5W3
(800) 420-4056 / www.newterra.com
*** Explanation and definition of abbreviations, acronyms and terms used in the manual are
presented in Appendix G – Glossary & Terms and Appendix H – Biological Treatment &
Monitoring Parameters.

6.2.2.1 Filterability Test

The objective of the filterability test is to evaluate the condition of the working biomass. This is
assessed by measuring the volume of filtrate passing through the filter paper. If filtrate is greater
than 10 mL/10 min, then biomass filterability is acceptable; however, if it is less than 10 mL/10
min, modifications to the plant operating condition are required to prevent premature membrane
fouling. See the Membrane Fouling Troubleshooting Guidelines table in Section 7.6.1 to
determine the cause of the low filterability and how to correct operation to improve the
filterability.
Laboratory Glassware and Filter Paper
Apparatus:
Filterability Kit is distributed by newterra ltd (Part # 24146).
Measurement Procedure:
1. Pleat filter paper by folding in half, quarters etc.
2. Line the funnel with pleated filter paper and place the funnel in the graduated cylinder.
3. Collect 50 mL of activated sludge sample in a beaker and stir.
4. Pour the 50 mL sample into the funnel.
5. Start timer when the first drop of water filtered through the filter paper.
6. After 10 minutes of filtration, record the level of filtrate in the graduated cylinder.
newterra O&M Manual 85
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