• REDUCTION OF HIGH COLOR, HUMIC SUBSTANCES, TURBIDITY, COLIFORM BACTERIA, THMMFP, UV ABSORBANCE, CYSTS, CHLORINE DEMAND, AND METALS FROM UNPREDICTABLE WATER SOURCE BY DISSOLVED AIR FLOTATION AND FILTRATION

    Author(s):
    Lawrence K Wang (see profile) , Mu-Hao Sung Wang
    Editor(s):
    Yuriy I. Pankivskyi
    Date:
    2023
    Group(s):
    Science, Technology, Engineering, Arts and Mathematics (STEAM), Science, Technology, Engineering and Mathematics
    Subject(s):
    Water--Purification--Dissolved air flotation, Water--Purification--Filtration, Humic acid--Derivatives--Environmental aspects, Enterobacteriaceae, Heavy metals--Environmental aspects, Sustainable development, Water--Purification--Trihalomethane removal, Cysts (Pathology)
    Item Type:
    Book chapter
    Tag(s):
    Cryptosporidium and Giardia cysts, filter backwash wastewater recycle, chemical recycle, Sandfloat, AquaDAF, Clari-DAF, unpredictable water, drinking water standards, water quality goals, glossary
    Permanent URL:
    https://hcommons.org/deposits/item/hc:55689/
    Abstract:
    This publication documents: (a) the dissolved air flotation and filtration (DAFF) process; (b) the Drinking Water Standards and water quality goals; (c) standards for raw water sources; (d) the procedure for determination of the trihalomethane maximum formation potential (THMMFP), (e) the alternatives of treating an unpredictable water supply source, (f) the filter backwash wastewater recycle and total chemical sludge recycle technology, (g) the glossary of drinking water quality parameters, and (h) a 4-months DAFF research for treatment of an unpredictable water supply source. The raw water had wide ranges of color (25-90 CU), humic substances (1.5-9.6 mg/l), turbidity (1.08-14.2 NTU), coliform bacteria (1 to TNTC #/100 ml), THMMFP (127 to 683 ppb), UV absorbance (0.13 to 0.28 UV), cysts-size microscopic count (410 to 34623 #/ml), chlorine demand (2 to 2.5 mg/l), lead (0.038 mg/l), and pH (6.4-7.5 units). Under the government supervision, a continuous DAFF plant was operated at 100 gpm flow for treating the above raw water using alum, sodium aluminate, and polymer for 4 months. The DAFF effluent met the all drinking water standards, and the plant performance in terms of impurity percent removals was excellent: color (93%), humic substances (80%), turbidity (93%), coliform bacteria (99%), THMMFP (82%), UV Absorbance (86%), cyst-size microscopic count (99.6%), chlorine demand (52%), and lead (43%). Any manufacturer's dissolved air flotation (DAF) and filtration process equipment (such as AquaDAF, Clari-DAF, etc.) may achieve similar high performance for water purification. https://hcommons.org/deposits/item/hc:55689/
    Notes:
    KEYWORDS: Call for Further Research, Memoir, Dedication, Sotirios G. Grigoropoulos, Dissolved Air Flotation, Filtration, Unpredictable Water Quality, Extremely High Color, Humic Substances, Turbidity, Coliform Bacteria, Trihalomethane Maximum Formation Potential, UV Absorbance, Cyst-Size Microscopic Count, Cryptosporidium and Giardia cysts, Heavy Metals In Drinking Water, Total Chemical Sludge Recycle, Water Loss Reduction, Chemical Consumption Reduction, Chlorine Demand Reduction
    Metadata:
    Published as:
    Book chapter    
    Status:
    Published
    Last Updated:
    9 months ago
    License:
    Attribution

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