Reduction of nutrients, microbes, and personal care products in domestic wastewater by a benchtop electrocoagulation unit

Scientific Reports
E M SymondsM Breitbart

Abstract

To preserve environmental and human health, improved treatment processes are needed to reduce nutrients, microbes, and emerging chemical contaminants from domestic wastewater prior to discharge into the environment. Electrocoagulation (EC) treatment is increasingly used to treat industrial wastewater; however, this technology has not yet been thoroughly assessed for its potential to reduce concentrations of nutrients, a variety of microbial surrogates, and personal care products found in domestic wastewater. This investigation's objective was to determine the efficiency of a benchtop EC unit with aluminum sacrificial electrodes to reduce concentrations of the aforementioned biological and chemical pollutants from raw and tertiary-treated domestic wastewater. EC treatment resulted in significant reductions (p < 0.05, α = 0.05) in phosphate, all microbial surrogates, and several personal care products from raw and tertiary-treated domestic wastewater. When wastewater was augmented with microbial surrogates representing bacterial, viral, and protozoan pathogens to measure the extent of reduction, EC treatment resulted in up to 7-log10 reduction of microbial surrogates. Future pilot and full-scale investigations are needed to optim...Continue Reading

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Citations

Jun 22, 2016·Scientific Reports·Joe HeffronBrooke K Mayer
Dec 27, 2019·Environmental Technology·Gustavo Holz BracherAndressa Paola Hubner
Jan 11, 2020·Environmental Science and Pollution Research International·Sara ZangariniFabrizio Adani

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