Why is neutralization necessary for alkaline corrosion-resistant water? An explanation of the standards of the Sewerage Act and the Water Pollution Control Act.
■ What regulations exist for boiler wastewater? There are additional regulations regarding the water quality standards for boiler wastewater under the Sewerage Act, the Water Pollution Control Act, and municipal ordinances. The Sewerage Act and the Water Pollution Control Act stipulate that the pH must be discharged between 5.8 and 8.6. ■ Why is the standard set around neutral? It is generally said that strongly acidic or alkaline wastewater can corrode sewer pipes and weaken the activity of microorganisms that clean wastewater at treatment plants. By establishing standards close to neutral, it is believed that such impacts are prevented. ■ Why is neutralization necessary? As mentioned previously, it is desirable to maintain the pH of boiler water between 11.0 and 11.8 for corrosion prevention inside the boiler. Therefore, high pH blowdown water must be neutralized before discharge, as discharging it directly would exceed the standards. ■ How is neutralization done? Typically, the pH of alkaline wastewater is lowered by adding an acid to adjust it within the standard values. Please feel free to consult us for more information.
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Drainage pH standard: 5.8~8.6 (Sewage Act / Water Pollution Control Act) / Response: Neutralization treatment of boiler water
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We have a track record of managing wastewater pH and neutralization treatment for various boiler facilities. Please feel free to contact us first.
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