Why pH Adjustment Is Critical To H2S Removal

Posted by Anthony DeLoach, President on Sep 14, 2017 10:59:55 AM

When attempting to remove hydrogen sulfide (H2S) from your water using degasification,

it is imperative that the pH be properly adjusted prior to treatment. This becomes more complicated if you are not already pre-treating water for membrane filtration or softening. When the pH of water rises above a pH of 5.5 it becomes more difficult to convert the H2S, or sulfides, into a gaseous phase to allow them to be removed as a gas, via the degasification process that utilizes a degasifier.

Hydrogen Sulfide

At a pH of 7, the conversion rate drops and a standard degasification tower will only remove 80-85% of hydrogen sulfide (H2S), leaving behind concerning levels of hydrogen sulfide (H2S). By lowering the pH to 5.5 (Ideal level) or at least a pH of 6 the removal efficiency increases to 99% in most cases. Where high water quality is demanded such as brewery's or canneries removals rates of 99.99% can be achieved.

Leaving too much hydrogen sulfide (H2S) or sulfur in the water can cause additional problems with water quality (taste and smell), fouling, and corrosion of the primary equipment and even the facilities. For more information or to learn more contact the professionals at DeLoach Industries Inc. at (941) 371-4995.

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Topics: degasification, pH levels of water, water treatment, water plant

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