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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