Adequate filter bed expansion is critical to achieving an effective filter backwash.
While this is a simple and well-known concept, many filter plant operators have not been
able to effectively incorporate bed expansion measurements into a filter backwash
routine. Accomplishing this task can be cumbersome, unless proper equipment,
techniques, and guidance are provided. During Pennsylvania's 14-year history of
conducting over 1,000 detailed Filter Plant Performance Evaluations at 340 filter plants,
Pennsylvania Department of Environmental Protection (DEP) staff have had the
opportunity to perform countless filter bed expansion measurements. Over the years,
DEP staff have observed common performance trends and have refined expansion
measurement techniques to gather information that can be readily applied to operators
across the country. These experiences have enabled DEP staff to devise an inexpensive
and easy-to-construct device to measure bed expansion. This paper presents the
innovative construction and measurement techniques in their research paper, with the
goal of enabling filter plant operators to routinely conduct efficient bed expansion
measurements. Includes 2 references, table, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 970 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 16 |
| Published : | 11/02/2003 |
