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What are the different types of tanning wastewater, and what are their characteristics?
1. Sulfur-containing wastewater: This refers to the liming wastewater and corresponding washing wastewater generated during the liming process of hair removal using the lime-alkali method. Lime-liming wastewater contains protein, lime, sodium sulfide, and suspended solids, with total CODcr at 28%, total S2- at 92%, and total SS at 75%. 2.
12/26/2025
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