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Abstract

Wastewater containing chromium treatment by loading flocculation method

Author(s): Tie-Hong Song, Kun Zhang, Xiao-Ling Wang

Use the loading flocculation process to treat the chromium-containing wastewater, testing the removal efficiency of loading flocculation method on trivalent chromium, turbidity, and COD. The study results shows that when the fixed dosage of ferric chloride is 36mg / L, PAMdosage of 1.5mg / L, the dosage of loading agent is 3000mg / L, turbidity can be reduced to 1.2NTU, the removal rate of chromium can reach more than 95%, the removal rate of COD is above 63%;When the fixed loading agent dosage is 3 000mg / L, PAMdosage fix in 1.5mg / L, the dosage of ferric chloride is 60mg / L, turbidity can be reduced to 2.2NTU, the removal rate of chromium can reachmore than 95%, the removal rate of COD is above 63%.According to the contrastive analysis of the two methods, adding the right amount of loading agent can significantly improve the turbidity, trivalent chromium, CODremoval efficiency.


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