Evaluation of filtration and ozonation of a primary sanitary effluent: aspects of microbacial inactivation and ozonation variables

Quimica nova

Lage Filho, Frederico de Almeida¹ 

[1] Universidade de São Paulo, São Paulo, Brasil

关键词: primary sanitary effluent;    filtration;    ozonation.;   

DOI  :  10.1590/S0100-40422008000200023

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Ozonation tests with and without prior filtrationby means of a 50 micron mesh cartridge filter were conducted with primary sanitaryeffluents. Filtration led to increased inactivation efficiencies with regardto total and thermotolerant coliforms but it did not seem to influence heterotrophicplate count (HPC) bacteria inactivation efficiencies significantly. Applicationof the Chick-Watson model to experimental data obtained in the situation ofconstant inactivation showed that the ozone dosage was more important to bacterialinactivation than the contact time with regard to the cases of thermotolerantcoliform inactivation in filtered samples and HPC bacteria and total coliforminactivation in non-filtered samples.

【 授权许可】

CC BY