Water Contaminant Treatments

Organics

Drinking Water Sources of Organics

Organic matter makes up a significant part of the soil, therefore water-soluble organic compounds are present in all water supplies. Organic matter is reported on a water analysis as carbon, as it is in the TOC (total organic carbon) determination. Organics come from three major sources: (1) the breakdown of naturally occurring organic materials, (2) domestic and commercial chemical wastes, and (3) chemical reactions that occur during water treatment processes. The first source is comprised of humic materials, microorganisms, and petroleum-based aliphatic and aromatic hydrocarbons. Organics derived from domestic and commercial chemical wastes include wastewater discharges, agricultural runoff, urban runoff, and leaching from contaminated soils. Organic contaminants formed during water treatment include disinfection by-products such as THM's (Trihalomethanes), or undesirable components of piping assembly such as joint adhesives.

Treatment of Organics

Activated carbon is generally used to remove organics, color, and taste-and-odor causing compounds. The contact time and service flow rate dictate the size of the carbon filter. When removing organics, restrict flow rates to 2 gpm per square foot of the filter bed. Reverse osmosis will remove 98 to 99% of the organics in the water. Ultrafiltration (TJF) and nanofiltration (NF) have both been proven to remove organics. Anion exchange resin also retains organics, but periodically needs cleaning.

Water Filtration Solutions To Address Organics

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                Other Contaminants

                Acidic Water
                Aluminum
                Arsenic
                Bacteria
                Barium
                Benzene
                Borate (Boron)
                Bromine (Bromide)
                Cadmium
                Calcium
                Carbon Tetrachloride
                Chloride
                Chlorine
                Chromium
                Color
                Copper
                Cryptosporidium
                Cyanide
                Fluoride
                Giardia Lamblia
                Hardness (Hard Water)
                Hydrogen Sulfide
                Iron
                Lead
                Legionella
                Magnesium
                Manganese
                Mercury
                Methane
                Nickel
                Nitrate
                Nitrite
                Odor
                Organics
                pH
                Pesticides
                Potassium
                Radium
                Radon
                Selenium
                Silica
                Silver
                SOC's
                Sodium
                Strontium
                Sulfate
                Taste
                THM's
                TOC
                Total Dissolved Solids
                Turbidity
                Uranium
                Viruses
                VOCs

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