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

Química Nova

Universidade de São Paulo, São Paulo, Brasil¹  Lage Filho, Frederico de Almeida¹ 

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 filtration by means of a 50 micron mesh cartridge filter were conducted with primary sanitary effluents. Filtration led to increased inactivation efficiencies with regard to total and thermotolerant coliforms but it did not seem to influence heterotrophic plate count (HPC) bacteria inactivation efficiencies significantly. Application of the Chick-Watson model to experimental data obtained in the situation of constant inactivation showed that the ozone dosage was more important to bacterial inactivation than the contact time with regard to the cases of thermotolerant coliform inactivation in filtered samples and HPC bacteria and total coliform inactivation in non-filtered samples.

【 授权许可】

Unknown