MilliporeSigma
  • Home
  • Search Results
  • Technical and economic feasibility of polyester dyeing wastewater treatment by coagulation/flocculation and Fenton's oxidation.

Technical and economic feasibility of polyester dyeing wastewater treatment by coagulation/flocculation and Fenton's oxidation.

Environmental technology (2014-04-08)
Carmen S D Rodrigues, Rui A R Boaventura, Luis M Madeira
ABSTRACT

This study aims to investigate the efficiency of individual and integrated processes applied to organic matter abatement and biodegradability improvement of a polyester dyeing wastewater, namely coagulation/flocculation combined with Fenton's reagent (Approach 1), Fenton oxidation alone (Approach 2) and its integration with coagulation/flocculation (Approach 3). The effects of Fe2+ dose, initial concentration of the oxidant (H202) and temperature during Fenton's oxidation were evaluated in Approaches 1 and 2, whereas in Approach 3 the influence ofpH and flocculant dose was also assessed, during the coagulation/flocculation stage. Toxicity and biodegradability of the final effluent were also evaluated. After oxidation, a slight increase in the specific oxygen uptake rate of the effluent was observed (from 27.0 up to 28.5-30.0mg O2/(gVSSh)) and the inhibition to Vibrio fischeri was eliminated. An effluent that complies with discharge standards was obtained in all cases; however, Approach 3 revealed to be a promising solution for treating this effluent as it leads to smaller operating costs. Therefore, the use of dissolved iron resulting from Fenton's oxidation as coagulant in the second stage was shown to be an innovative, efficient and economically attractive strategy for treating these effluents.

MATERIALS
Product Number
Brand
Product Description

Iron, foil, 100x100mm, thickness 1.0mm, as rolled, 99.5%
Iron, rod, 500mm, diameter 19.0mm, as drawn, 98+%
Iron, rod, 200mm, diameter 3.0mm, as drawn, 99.99+%
Iron, rod, 200mm, diameter 30mm, as drawn, armcO« soft ingot 99.8%
Iron, foil, 25x25mm, thickness 0.15mm, hard, 99.5%
Iron, rod, 500mm, diameter 4.8mm, as drawn, 98+%
Iron, rod, 200mm, diameter 100mm, as drawn, armcO« soft ingot 99.8%
Iron, foil, 25x25mm, thickness 1.0mm, as rolled, 99.99+%
Iron, foil, 150x150mm, thickness 1.0mm, as rolled, 99.5%
Iron, foil, 100x100mm, thickness 0.38mm, hard, 99.5%
Iron, rod, 100mm, diameter 6.0mm, as drawn, 99.99+%
Iron, foil, 25x25mm, thickness 0.1mm, hard, 99.5%
Iron, foil, 100x100mm, thickness 3.1mm, as rolled, 99.95%
Iron, rod, 50mm, diameter 6.0mm, as drawn, 99.99+%
Iron, rod, 500mm, diameter 3.0mm, as drawn, 99.99+%
Iron, tube, 100mm, outside diameter 12.0mm, inside diameter 9mm, wall thickness 1.5mm, annealed, 99.5%
Iron, wire reel, 1m, diameter 0.5mm, hard, 99.99+%
Iron, tube, 500mm, outside diameter 20.0mm, inside diameter 16mm, wall thickness 2.0mm, annealed, 99.5%
Iron, tube, 100mm, outside diameter 15.0mm, inside diameter 12mm, wall thickness 1.5mm, annealed, 99.5%
Iron, foil, 150x150mm, thickness 1.0mm, as rolled, armco« soft ingot 99.8%
Iron, foil, 100x100mm, thickness 0.5mm, as rolled, 99.99+%
Iron, foil, 300x300mm, thickness 0.5mm, hard, 99.5%
Iron, wire reel, 20m, diameter 0.5mm, as drawn, 99.95%
Iron, foil, 10mm disks, thickness 0.015mm, 99.99+%
Iron, foil, not light tested, 50x50mm, thickness 0.004mm, 99.85%
Iron, foil, 8mm disks, thickness 0.038mm, hard, 99.5%
Iron, foil, not light tested, 50x50mm, thickness 0.004mm, 99.99+%
Iron, foil, 6mm disks, thickness 0.005mm, 99.85%
Iron, foil, 8mm disks, thickness 0.015mm, 99.99+%
Iron, foil, 6mm disks, thickness 0.025mm, hard, 99.5%