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Electrolytic Treatment of an Industrial Wastewater from a Hosiery Plant
Author(s) -
Edwards Findlay G.,
Fendley Darryl L.,
Lunsford Jesse V.
Publication year - 2006
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143006x98831
Subject(s) - turbidity , electrocoagulation , effluent , facultative lagoon , wastewater , chemical oxygen demand , suspended solids , pulp and paper industry , total suspended solids , environmental science , flocculation , environmental engineering , sedimentation , sewage treatment , settling , reuse , pilot plant , chemistry , waste management , sediment , ecology , biology , engineering , paleontology
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.