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MEMBRANE BIOREACTORS AND CONSTRUCTED WETLANDS FOR TREATMENT OF RENDERING PLANT WASTEWATER
Author(s) -
O'Brien Catherine A.,
Scholz Miklas,
McConnachle Gordon L.
Publication year - 2005
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.2005.tb01586.x
Subject(s) - effluent , dissolved air flotation , wastewater , chemical oxygen demand , rendering (computer graphics) , nitrification , membrane bioreactor , sewage treatment , pulp and paper industry , denitrification , chemistry , environmental science , environmental engineering , ammonia , secondary treatment , total suspended solids , biochemical oxygen demand , environmental chemistry , nitrogen , computer graphics (images) , organic chemistry , computer science , engineering
The performance of a novel industrial membrane bioreactor (MBR) comprising denitrification, nitrification and ultrafiltration for the secondary treatment of primary treated animal rendering wastewater has been compared with an experimental, low‐cost and novel vertical‐flow constructed wetland planted with Typha latifolia L. (Reedmace or Broad‐leaved Cattail). The process wastewater followed pre‐treatment by dissolved air flotation (DAF). The mean DAF effluent gave highly variable chemical oxygen demand (COD) and ammonia concentrations of 5816 (standard deviation (SD): 3005.0) and 614 (SD: 268.7) mg/l, respectively. The mean MBR effluent for COD and ammonia was 37 and 86 mg/l, respectively. The mean treatment performance of the constructed wetland for COD, ammonia and suspended solids was 205, 67 and 57 mg/l, respectively.