Chlorine Removal

Chlorine Removal

Chlorine is added to municipal water supplies to kill bacteria and it does that job well. But once the water reaches your tap, the chlorine that protected it in the pipe is exactly what you're trying to remove. The same chemistry that neutralizes pathogens also reacts with organic matter to form trihalomethanes (THMs) and haloacetic acids, both regulated as potential carcinogens under EPA drinking water standards.

The taste and smell most people describe as swimming pool water or bleach is almost always free chlorine or chloramine. Chloramine is a compound utilities increasingly use because it stays stable longer in distribution systems, but it requires extended contact time with catalytic carbon to remove effectively. Standard carbon block filtration handles free chlorine well but often falls short on chloramine. Sulfur-based rotten egg odors from well water are a separate issue requiring oxidation and filtration before carbon treatment.

AMPAC USA designs chlorine and chloramine removal systems for residential, commercial, and industrial water applications. Treatment sequences are matched to the source water chemistry. Municipal supplies with free chlorine typically need a carbon block pre-filter before the RO membrane. Chloraminated supplies require higher-capacity catalytic carbon with appropriate contact time. High-chlorine industrial feeds may need chemical reduction using sodium bisulfite injection before carbon treatment to protect downstream equipment.

For facilities where chlorine removal is part of a broader water quality issue, AMPAC integrates chlorine pre-treatment into a complete multi-barrier system. Reverse osmosis downstream of the carbon filter removes dissolved solids, fluoride, nitrates, and heavy metals that carbon alone cannot address. The result is water that tastes clean, has no chemical odor, and meets purity requirements for drinking, process use, or equipment protection.

Carbon bed sizing and replacement schedules depend on daily flow rate and chlorine concentration in the feed. AMPAC commercial systems include service indicators and conductivity monitoring to confirm treatment performance between scheduled maintenance visits.

Call AMPAC USA at (909) 548-4900 to discuss chlorine removal for your residential, commercial, or industrial application.

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