Samar A. El-Mekkawi , Sayeda M. Abdo , Marwa A. Youssef , Gamila H. Ali
{"title":"Optimizing performance efficiency of algal-bacterial-based wastewater treatment system using response surface methodology","authors":"Samar A. El-Mekkawi , Sayeda M. Abdo , Marwa A. Youssef , Gamila H. Ali","doi":"10.1016/j.gsd.2024.101273","DOIUrl":null,"url":null,"abstract":"<div><p>Developing wastewater treatment technologies is crucial for enhancing treatment efficiency and promoting the reuse of treated water. In this article, the Algal-Bacterial integrated system (ABIS) is employed to treat municipal wastewater collected from the Zenin wastewater treatment plant in Giza governorate, Egypt. This system relies on the synergy between heterotrophic bacteria and microalgae to form a biofilm capable of absorbing contaminants from the wastewater. The main objective of this study is to optimize the factors influencing the treatment efficiency using response surface methodology derived from the experimental design software of Design Expert 6.0.8. The optimal results revealed that using an absorber amount of 0.18 g/L for a hydraulic retention time of 1.4 d provides removal efficiency of BOD, COD, TSS, and turbidity are 88.57%, 82.7 %, 94.90%, and 95.91%, respectively. These findings were experimentally and statistically verified with an accuracy exceeding a 95% confidence interval and 95% prediction interval. The physicochemical characteristics, algal community structure, as well as the density of total coliform, fecal coliform, and Escherichia coli (E. coli), were determined for the treated wastewater and compared to the Egyptian code of practice for the use of treated municipal wastewater for agricultural purposes to assess its suitability for unrestricted irrigation.</p></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":null,"pages":null},"PeriodicalIF":4.9000,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Groundwater for Sustainable Development","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352801X24001966","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
Abstract
Developing wastewater treatment technologies is crucial for enhancing treatment efficiency and promoting the reuse of treated water. In this article, the Algal-Bacterial integrated system (ABIS) is employed to treat municipal wastewater collected from the Zenin wastewater treatment plant in Giza governorate, Egypt. This system relies on the synergy between heterotrophic bacteria and microalgae to form a biofilm capable of absorbing contaminants from the wastewater. The main objective of this study is to optimize the factors influencing the treatment efficiency using response surface methodology derived from the experimental design software of Design Expert 6.0.8. The optimal results revealed that using an absorber amount of 0.18 g/L for a hydraulic retention time of 1.4 d provides removal efficiency of BOD, COD, TSS, and turbidity are 88.57%, 82.7 %, 94.90%, and 95.91%, respectively. These findings were experimentally and statistically verified with an accuracy exceeding a 95% confidence interval and 95% prediction interval. The physicochemical characteristics, algal community structure, as well as the density of total coliform, fecal coliform, and Escherichia coli (E. coli), were determined for the treated wastewater and compared to the Egyptian code of practice for the use of treated municipal wastewater for agricultural purposes to assess its suitability for unrestricted irrigation.
期刊介绍：
Groundwater for Sustainable Development is directed to different stakeholders and professionals, including government and non-governmental organizations, international funding agencies, universities, public water institutions, public health and other public/private sector professionals, and other relevant institutions. It is aimed at professionals, academics and students in the fields of disciplines such as: groundwater and its connection to surface hydrology and environment, soil sciences, engineering, ecology, microbiology, atmospheric sciences, analytical chemistry, hydro-engineering, water technology, environmental ethics, economics, public health, policy, as well as social sciences, legal disciplines, or any other area connected with water issues. The objectives of this journal are to facilitate: • The improvement of effective and sustainable management of water resources across the globe. • The improvement of human access to groundwater resources in adequate quantity and good quality. • The meeting of the increasing demand for drinking and irrigation water needed for food security to contribute to a social and economically sound human development. • The creation of a global inter- and multidisciplinary platform and forum to improve our understanding of groundwater resources and to advocate their effective and sustainable management and protection against contamination. • Interdisciplinary information exchange and to stimulate scientific research in the fields of groundwater related sciences and social and health sciences required to achieve the United Nations Millennium Development Goals for sustainable development.
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