Eventos perigosos em unidades de filtração de etas do Brasil: estudos de caso

Q1 Arts and Humanities

Proceedings of the Aristotelean Society Pub Date : 2022-11-25 DOI:10.20396/iwisdw.n1.2022.4801

Angela Di Bernardo Dantas, L. Bernardo, Lucas Polizel, Jennifer Liani, Natália Volpato da Conceição, Natalia Aparecida Killer

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Abstract

The presence of pathogenic protozoa in surface water sources is widely known and reported in literature. In conventional water treatment plants (WTPs), as most of the Brazilian WTPs, filters are considered the main barrier to such microorganisms. As part of the elaboration of Water Safety Plans (WSP), diagnostics were carried out in the filtration units of six different WTPs in Brazil, with the identification of hazardous events that may contribute to the presence of hazard (protozoa and other pathogenic microorganisms) in the treated water. All WTPs had at least one hazardous event related to filtration units. Such events are mainly of hydraulic or infrastructural nature; or, in some cases, operational. Control measures were indicated to control associated risks, which are usually high, since the effectiveness of disinfection is reduced when filters do not perform properly. Operational measures were able to increase water safety in very short term, whilst infrastructural measures may demand a longer period to be implemented.

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巴西wtp过滤装置中的危险事件:案例研究

在地表水水源中存在致病性原生动物是众所周知的，并有文献报道。在传统的水处理厂(WTPs)，如大多数巴西WTPs，过滤器被认为是这类微生物的主要屏障。作为拟定水安全计划的一部分，在巴西六个不同水安全计划的过滤装置中进行了诊断，确定了可能导致处理水中存在危险(原生动物和其他病原微生物)的危险事件。所有污水处理厂都至少有一次与过滤装置有关的危险事件。此类事件主要是水力或基础设施性质的;或者，在某些情况下，操作。建议采取控制措施，以控制通常较高的相关风险，因为当过滤器不能正常工作时，消毒效果会降低。操作措施能够在很短的时间内提高水安全，而基础设施措施可能需要更长的时间来实施。

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来源期刊

Proceedings of the Aristotelean Society Arts and Humanities-Philosophy

CiteScore

1.10

自引率

0.00%

发文量

期刊介绍： The Proceedings of the Aristotelian Society contains the papers read at the Society"s fortnightly meetings in London throughout the academic year, and short discussion notes on these papers. Papers are drawn from an international base of contributors and discuss issues across a broad range of philosophical traditions, including those which are of greatest current interest.