Industrial Process Water

Treatment Methodswww.WaterProfessionals.com

Industrial Process Water Treatment MethodsActivated Carbon Filter• Filters through

chemical absorption• Removes free

chlorine and organic compounds

• Made from natural materials (i.e. coal, coconut shells)

• Carbon is steam or chemical activated

Dealkalization• Reduces alkalinity in

water• Commonly used for

pre-treating boiler feed water

• Four methods:– Chloride anion

dealkalizers– Split stream dealkalizers– Weak acid dealkalization– Reverse osmosis

Industrial Process Water Treatment Methods

Demineralization• Ion exchange

process• Also called

deionization• Used to produce high

purity water• Removes:

– Salts– Minerals– Nitrates

Industrial Process Water Treatment Methods

Greensand Filtration• Sandy sediment that

is greenish-black to blue-green in color

• Composed of glauconite coated with manganese dioxide, or silica

• Removes:– Iron– Manganese– Hydrogen Sulfide

Industrial Process Water Treatment Methods

Ion Exchange• The process of

exchanging positively or negatively charged ions:– Cation exchange

(positive)– Anion exchange

(negative)

• Controls water purity and pH levels

• Used extensively in nuclear facilities and industrial processes

Industrial Process Water Treatment Methods

Microfiltration• Physical filtration• Removes suspended

solids from 0.1 to 10 microns

• Does not remove dissolved solids

• Commonly used to sterilize and clarify beverages, juices, wines and beer

Industrial Process Water Treatment Methods

Multi-Media Filtration• Typically consists of

three layers:– Anthracite– Sand– Garnet

• Removes suspended solids from 10 to 25 microns

• Delivers high quality water at much faster flow rates than conventional sand filters

Industrial Process Water Treatment Methods

Nanofiltration• Removes 50%-90% of

monovalent ions• Commonly used for:

– Water softening– Nitrates removal– Removal of pesticides– Removal of heavy

materials• Used in manufacturing:

– Drugs– Dairy products– Textiles– Baked goods

Industrial Process Water Treatment Methods

Reverse Osmosis• Cost efficient

method of deionizing water

• Uses man-induced pressure to force water through a fine filtration membrane

• Removes up to 98% of dissolved ions

• Removes contaminants down to 0.0001 microns

Industrial Process Water Treatment Methods

Ultraviolet Disinfection• Physical filtration

process• Utilizes UV radiation to

neutralize microorganisms

• No impact on water’s chemical composition

• No impact on dissolved oxygen levels

• Water must be free of any contaminants that could affect transmission of the UV rays

Industrial Process Water Treatment Methods

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