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About This Item
Full Description
1.1 This practice covers the procedure used to perform pressure in-line coagulation-flocculation-filtration of water and waste water. It is applicable to water and waste water with relatively low suspended solids (<30 mg/L). The practice is applicable for any size filter greater than 100 mm (4 in.) in diameter.
1.2 This practice can be used to determine the effectiveness of flocculants or coagulants, or both, and filter medium(a) in removing suspended and colloidal material from water and waste water.
1.3 Interval between filter backwashing, backwash requirements, rinse requirements, and effect of filtration rate on effluent quality can also be obtained with this practice.
Document History
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ASTM D4188-17
Standard Practice for Performing Pressure In-Line Coagulation-Flocculation-Filtration Test in Water- Most Recent
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ASTM D4188-13
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Standard Practice for Performing Pressure In-Line Coagulation-Flocculation-Filtration Test in Water- Historical Version
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ASTM D4188-08
Standard Practice for Performing Pressure In-Line Coagulation-Flocculation-Filtration Test- Historical Version
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ASTM D4188-82(1999)
Standard Practice for Performing Pressure In-Line Coagulation-Flocculation-Filtration Test- Historical Version
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ASTM D4188-82(2003)
Standard Practice for Performing Pressure In-Line Coagulation-Flocculation-Filtration Test- Historical Version