Water Treatment Plant (Wtp) Optimization Techniques
Introduction
Given the seemingly ubiquitous, yet episodic nature of pathogen presence in source waters, monitoring and opti-mizmg the performance of water treatment plants is an increasingly important aspect in many suppliers' plans for maintaining w;ater quality .
Filtration Plant Optimization (FPO)
The Filtration Plant Optimization (FPO) analysis w:as developed by the EPA to replace the modified Microscopic Particulate Analysis (MPA) procedure that had been used to assess filter plant performance'. These methods are similar in that both involve concentration of large volume water samples usmg ten-inch (10=) cartridge filters from the treatment plant's raw and finished wrater. These samples are analyzed and the data compared to assess the efficiency of removal of biological particulates due to treatment. Laboratory analysis involves elution of the particulates from the filter, concentration of the eliiant by centrifuga-tion and microscopic examination. The FPO procedure includes separating a portion of the filter extract and processmg it according to a modified version of EPA Method 1623: Giardia and Cryptosporidium in Water by Filtra-tion/Immunomagnetic Separation/Fluorescent Antibody Staining.
Bacteria and viruses are not detected by the FPO analysis. However, results from the FPO analysis do indicate the number and type of other microorganisms {i.e., protozoa, algae) present in several size classes. This allows WTP managers an opportunity to review the performance of a particular filter, coagulation and flocculation scheme, etc. and a means of measuruig performance improvement that result from optimization efforts.
Analytical Services, Inc. (ASI) has offered JFPPE'FPO analyses suice 1989. We supply sampling equipment and complete detailed sample collection instructions and prompt turnaround tune on the analyses. After you receive your report, our technical staff is available to review the tabulated results and log removal (by size class) data with you. We can also help you interpret the significance of these data in terms of WTP performance and the removal of Giardia and Cryptosporidium.
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