Jar Testing for Metals Removal

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Courtesy of Integrated Engineers Inc.

Using the chart below, find the metal(s) of concern. Determine the best pH range for maximum insolubility for the metal(s). If there is a combination of metals, then concentrate on the metal with the highest concentration and adjust the pH to this point.

Determining the Optimum pH for combined metals: Typically facilities have 2, 3 or more different metals in their waste stream. To determine the optimal pH, use a concentration factor of each metal and calculate the optimal pH point. For example, a waste stream has copper at 85 ppm, Nickel at 300 ppm, and total chrome at 125 ppm.

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