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Comment PDF Water Treatment

Non-Chemical Water Treatment

By William F. Harfst, Harfst and Associates, Inc. |

Non-chemical methods for conditioning water for use in cooling towers and boilers have been investigated, marketed and installed for over 100 years. In light of the recent incentives to “go green,” these methods offer engineers, operators and owners the option of replacing corrosive, toxic chemicals with physical or mechanical processes that claim to produce the same or superior results to those obtained by traditional chemical treatment methods — often without many of the attendant environmental, health and safety concerns. Because of the growing interest in conserving water, reducing discharge of chemicals into the environment, limiting exposure of workers to hazardous chemicals, and the ever-present need to save energy, engineers are once again reviewing the benefits of non-chemical water treatment methods. A review of the literature along with many years of experience indicates that some of these methods produce results as promised by the manufacturer, whereas others fall short of this goal. The array of non-chemical water treatment equipment is impressive. And the assertions for the benefits derived from using these devices are equally impressive. A simple, but not all-inclusive, list of equipment types is as…
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