Physico-chemical evaluation of an effluent treated in anaerobic biodigester regarding its efficience and application as fertilizer

Química Nova

Embrapa Instrumentação, São Carlos, Brasil¹  Kuroki, Vivian¹  Silva, Wilson Tadeu Lopes da¹  Universidade de São Paulo, São Carlos, Brasil¹  Universidade Federal de São Carlos, São Carlos, Brasil¹  Centro Estadual de Educação Tecnológica Paula Souza, Cabrália Paulista, Brasil¹  Novaes, Antonio Pereira de¹  Magnoni Júnior, Lourenço¹  Martelli, Lilian Fernanda de Almeida¹ 

关键词: anaerobic biodigester;    sewage treatment;    fertilizer.;   

DOI  :  10.1590/S0100-40422012000100007

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The use of biodigester for basic and environmental sanitation has large demand in Brazil. A biodigester was built to treat conjunctly the human and pig feces and urine, regarding to its future application in rural small towns. The results show that the biodigester can reduce 90% of COD and BOD and, up to 99.99% of thermotolerant coliforms. The treated effluent has variable quantities of macro- and micro-nutrients; and organic matter. However, the concentration variability of the nutrients makes difficult a dosed application into soil. The soluble salts (mainly as Na+ form) make necessary a controlled use to avoid environmental degradation.

【 授权许可】

Unknown