Electrolytic treatment of an industrial wastewater from a hosiery plant.
Textile plant wastewater being treated in a facultative pond system had too high of a solids concentration to be reused in the dying and rinsing processes. Electrocoagulation was evaluated to further treat the pond effluent to remove turbidity, which was caused by dyes and microorganisms. A range of amperages were tested for removal of turbidity and chemical oxygen demand (COD). Electrocoagulation lowered the turbidity from 1400 NTU to below 50 NTU; and COD was lowered from 550 mg/L to approximately 250 mg/L, which was acceptable for reuse. In addition, a laboratory-scale sedimentation study was conducted on the electrocoagulated pond effluent, which indicated that a settling time of 35 minutes would provide for 80% removal of suspended solids, which was acceptable for reuse of the water in plant processes.
Edwards
Findlay G
FG
Department of Civil Engineering, University of Arkansas, Fayetteville 72701, USA. edwards@uark.edu
Fendley
Darryl L
DL
Lunsford
Jesse V
JV
D000535:Aluminum / Q000737:chemistry; D004572:Electrolysis / Q000379:methods*; D007220:Industrial Waste; D009391:Nephelometry and Turbidimetry; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis; D018508:Water Purification
D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D000535:Aluminum