The printing and dyeing industry produces a large amount of wastewater. Every ton of textile printing and dyeing requires 100-150 tons of water, 80% of which becomes wastewater. The wastewater contains a high concentration of sodium hydroxide alkaline substances, PH = 8-14 It is a good desulfurizer. By spraying alkaline wastewater into the desulfurization tower, it can fully react with sulfur dioxide to produce sodium sulfite. After strong oxidation, sodium sulfate is produced. Mainly suitable for small and medium boilers.
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