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

Quimica nova

Silva, Wilson Tadeu Lopes da¹  Kuroki, Vivian¹  Novaes, Antonio Pereira de¹  Magnoni Júnior, Lourenço¹  Martelli, Lilian Fernanda de Almeida² 

[1] Embrapa Instrumentação, São Carlos, Brasil;Universidade Federal de São Carlos, São Carlos, Brasil

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】

CC BY