A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of K.sub.2FeO.sub.4/US treatment on textile dyeing sludge disintegration and dewaterability
The effect of potassium ferrate/ultrasonic (K.sub.2FeO.sub.4/US) treatment on the physicochemical features of textile dyeing sludge was studied. The soluble chemical oxygen demand (SCOD), deoxyribonucleic acid (DNA), sludge volume index (SVI), sludge viscosity, capillary suction time (CST) and particle size were measured to understand the observed changes in the sludge physicochemical features. The results showed that the combined K.sub.2FeO.sub.4/US treatment presented great advantages for disrupting the sludge floc structure over K.sub.2FeO.sub.4 or ultrasonic treatments alone. The optimal parameters of sludge disintegration were found to be a K.sub.2FeO.sub.4 treatment time of 60 min, a K.sub.2FeO.sub.4 dosage of 0.5936 g/g SS, an ultrasonic time of 15 min and an ultrasonic intensity of 0.72 W/mL. The initial median diameter of the sludge particles was 15.24 [mu]m, and this value decreased by 35.89%. The CST was initially 59.6 s and increased by 231%, whereas the SVI was 97.78 mL/g and decreased by 25.89%. Scanning electron microscope (SEM) images indicated that the sludge surface was irregular and loose with a large amount of channels or voids during K.sub.2FeO.sub.4/US treatment. K.sub.2FeO.sub.4/US treatment synergistically enhanced the sludge solubilization and reached 668.67 mg/L SCOD, which is 31.81% greater than the additive value obtained with K.sub.2FeO.sub.4 treatment alone (215.95 mg/L) or with ultrasonic treatment alone (240 mg/L).
Effect of K.sub.2FeO.sub.4/US treatment on textile dyeing sludge disintegration and dewaterability
The effect of potassium ferrate/ultrasonic (K.sub.2FeO.sub.4/US) treatment on the physicochemical features of textile dyeing sludge was studied. The soluble chemical oxygen demand (SCOD), deoxyribonucleic acid (DNA), sludge volume index (SVI), sludge viscosity, capillary suction time (CST) and particle size were measured to understand the observed changes in the sludge physicochemical features. The results showed that the combined K.sub.2FeO.sub.4/US treatment presented great advantages for disrupting the sludge floc structure over K.sub.2FeO.sub.4 or ultrasonic treatments alone. The optimal parameters of sludge disintegration were found to be a K.sub.2FeO.sub.4 treatment time of 60 min, a K.sub.2FeO.sub.4 dosage of 0.5936 g/g SS, an ultrasonic time of 15 min and an ultrasonic intensity of 0.72 W/mL. The initial median diameter of the sludge particles was 15.24 [mu]m, and this value decreased by 35.89%. The CST was initially 59.6 s and increased by 231%, whereas the SVI was 97.78 mL/g and decreased by 25.89%. Scanning electron microscope (SEM) images indicated that the sludge surface was irregular and loose with a large amount of channels or voids during K.sub.2FeO.sub.4/US treatment. K.sub.2FeO.sub.4/US treatment synergistically enhanced the sludge solubilization and reached 668.67 mg/L SCOD, which is 31.81% greater than the additive value obtained with K.sub.2FeO.sub.4 treatment alone (215.95 mg/L) or with ultrasonic treatment alone (240 mg/L).
Effect of K.sub.2FeO.sub.4/US treatment on textile dyeing sludge disintegration and dewaterability
2015
Article (Journal)
English
BKL:
43.00
Effect of K2FeO4/US treatment on textile dyeing sludge disintegration and dewaterability
| Online Contents | 2015
Enhanced dewaterability of textile dyeing sludge using micro-electrolysis pretreatment
| Online Contents | 2015
Dewaterability of Aerobic Granular Sludge
| British Library Conference Proceedings | 2011