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Six Parameters for Filter Operations
Author(s) -
Pizzi Nicholas G.
Publication year - 2003
Publication title -
opflow
Language(s) - English
Resource type - Journals
eISSN - 1551-8701
pISSN - 0149-8029
DOI - 10.1002/j.1551-8701.2003.tb01737.x
Subject(s) - turbidity , filter (signal processing) , volume (thermodynamics) , measure (data warehouse) , mathematics , environmental science , process engineering , computer science , engineering , geology , physics , data mining , thermodynamics , computer vision , oceanography
This article discusses six parameters that operators can measure routinely to determine the causes of elevated turbidities. They include: bed depth measurement; L/d e ratio; D 90 /D 10 ratio (for dual media designs); turbidity of the spent filter backwash water versus time; unit filter run volume (UFRV); and, solids retention in the bed. The article states that it is important to establish normal operating parameters for filters when turbidities are low, so that these parameters can be measured again during poor turbidity production events.