Ecotoxicidade de esgoto tratado como um parâmetro operacional em ETES

Q1 Arts and Humanities

Proceedings of the Aristotelean Society Pub Date : 2022-11-25 DOI:10.20396/iwisdw.n1.2022.4795

Gabriela Cristina Tavares Araújo Almeida, G. Umbuzeiro

{"title":"Ecotoxicidade de esgoto tratado como um parâmetro operacional em ETES","authors":"Gabriela Cristina Tavares Araújo Almeida, G. Umbuzeiro","doi":"10.20396/iwisdw.n1.2022.4795","DOIUrl":null,"url":null,"abstract":"Aquatic ecosystems are used as destination of urban effluents. According to Brazilian regulation, final effluents must not have the potential to cause impact on the receiving body and, to assess this impact, toxicity tests are required. The objective of this work was to evaluate the acute toxicity with Daphnia similis and chronic with Ceriodaphnia dubia of final effluents from 4 sewage plants (ETEs, named A, B, C and D) from Campinas, SP, Brazil, with different treatments’ levels. Six monthly campaigns were carried out in 2022 and samples were collected before and after chlorination. The effluents from ETE B showed acute toxicity in all campaigns, and effluents from ETE A and C showed acute toxicity in at least one campaign, but with low toxicity (EC50, 48h >50%). Chronic toxicity was detected in all effluents, except in ETE D (reuse water production station) indicating the great efficiency of the treatment of membrane bioreactors (MBR). Acute tests with fish embryos (FET) will be performed to compare the results of tests with cladocerans. The evaluation of the impact potential of the effluents will also be carried out based on the average of effluent discharges and in reference to the respective receiving bodies.","PeriodicalId":35222,"journal":{"name":"Proceedings of the Aristotelean Society","volume":"17 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Aristotelean Society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.20396/iwisdw.n1.2022.4795","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Arts and Humanities","Score":null,"Total":0}

引用次数: 0

Abstract

Aquatic ecosystems are used as destination of urban effluents. According to Brazilian regulation, final effluents must not have the potential to cause impact on the receiving body and, to assess this impact, toxicity tests are required. The objective of this work was to evaluate the acute toxicity with Daphnia similis and chronic with Ceriodaphnia dubia of final effluents from 4 sewage plants (ETEs, named A, B, C and D) from Campinas, SP, Brazil, with different treatments’ levels. Six monthly campaigns were carried out in 2022 and samples were collected before and after chlorination. The effluents from ETE B showed acute toxicity in all campaigns, and effluents from ETE A and C showed acute toxicity in at least one campaign, but with low toxicity (EC50, 48h >50%). Chronic toxicity was detected in all effluents, except in ETE D (reuse water production station) indicating the great efficiency of the treatment of membrane bioreactors (MBR). Acute tests with fish embryos (FET) will be performed to compare the results of tests with cladocerans. The evaluation of the impact potential of the effluents will also be carried out based on the average of effluent discharges and in reference to the respective receiving bodies.

查看原文本刊更多论文

污水处理厂处理后的生态毒性作为操作参数

水生生态系统被用作城市污水的归宿。根据巴西法规，最终流出物不得对接收体造成潜在影响，为了评估这种影响，需要进行毒性测试。本研究旨在评价巴西坎皮纳斯4个污水处理厂(A、B、C、D)不同处理水平的终出水急性相似水蚤毒性和慢性dubia Ceriodaphnia毒性。2022年开展了6个月的活动，收集了氯化前后的样本。ETE B的废水在所有运动中都表现出急性毒性，ETE A和C的废水至少在一个运动中表现出急性毒性，但毒性较低(EC50, 48h bb0 50%)。除ETE D(回用水生产站)外，所有出水均检测到慢性毒性，表明膜生物反应器(MBR)的处理效率很高。将对鱼胚胎进行急性试验，以比较与支海动物的试验结果。还将根据污水排放量的平均值并参照各自的接收机构，对污水的潜在影响进行评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.