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

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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