Effect of temperature on two-phase anaerobic reactors treating slaughterhouse wastewater

Brazilian Archives of Biology and Technology

Simone Beux¹  Ezequiel Nunes¹  Ana Cláudia Barana¹ 

[1] ,Universidade Estadual de Ponta Grossa Departamento de Engenharia de Alimentos Ponta Grossa PR ,Brasil

关键词: Effluent;    slaughterhouse;    treatment;    anaerobic;    two-phase;   

DOI  :  10.1590/S1516-89132007000700017

来源: SciELO

【 摘 要 】

The effectiveness of the anaerobic treatment of effluent from a swine and bovine slaughterhouse was assessed in two sets of two-phase anaerobic digesters, operated with or without temperature control. Set A, consisting of an acidogenic reactor with recirculation and an upflow biological filter as the methanogenic phase, was operated at room temperature, while set B, consisting of an acidogenic reactor without recirculation and an upflow biological filter as the methanogenic phase, was maintained at 32°C. The methanogenic reactors showed COD (Chemical Demand of Oxygen) removal above 60% for HRT (Hydraulic Retention Time) values of 20, 15, 10, 8, 6, 4, and 2 days. When the HRT value in those reactors was changed to 1 day, the COD percentage removal decreased to 50%. The temperature variations did not have harmful effects on the performance of reactors in set A.

【 授权许可】

CC BY-NC   
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