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This paper presents the permeate water quality and economy of reuse by nanofiltration membranes in reactive dyeing. Actual remazol dye bath wastewater, which contains high concentrations of NaCl at the level of 80 g/l, was studied during experiments. Experimental results showed that permeate samples were colorless and remained enough NaCl to be reused in reactive dye bath preparation again. Neutralization...
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