Coagulant recovery and reuse for drinking water treatment

Keeley, James; Jarvis, Peter; Smith, Andrea D.; Judd, Simon

doi:10.1016/j.watres.2015.10.038

Cited by 55 publications

(28 citation statements)

References 22 publications

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“…Many scientists produced adsorbents by reusing metal sludges [39][40][41]. They used them again in wastewater treatment and removal of heavy metals (Hg, Pb, As, Cr, Cu) [40,42,43].…”

Section: Impact Of Al Accumulation On Smebr and Environmentmentioning

confidence: 99%

Aluminum accumulation in treatment using submerged membrane electro-bioreactor of young landfill leachate: Statistical analysis

Akkaya

Ayvaz-Cavdaroglu

Bilgili

2020

Environmental Research and Technology

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Herein, landfill leachate containing high amount of organic matter, which is quite difficult to treat, was first treated using the new submerged membrane electro-bioreactor (SMEBR) system. Aluminum (Al) electrode was used for the treatment of leachate in the SMEBR and Al accumulation was detected. This study aims to examine Al accumulation in the treatment of leachate with high organic content in the SMEBR system. The Al values obtained were plotted on a graph using MS Excel, and Mann-Whitney U test was used to determine whether there is a statistical difference between the observed Al values. Also, correlations between Al accumulations and conductivity and TOC in SMEBR and SMBR were evaluated. Resultantly, it was found that relationship between Al and conductivity is very weak, correlation between Al and TOC% is a weak-moderate, the Al accumulation in the SEMBR has a linear relationship with time and there is a very strong correlation between the two variables (R 2 = 0.7591). Its correlation with time in the SMBR is moderate (R 2 = 0.3316). MS Excel 2016 and Minitab 16.0 programs were utilized in the statistical analyses.

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“…Many scientists produced adsorbents by reusing metal sludges [39][40][41]. They used them again in wastewater treatment and removal of heavy metals (Hg, Pb, As, Cr, Cu) [40,42,43].…”

Section: Impact Of Al Accumulation On Smebr and Environmentmentioning

confidence: 99%

Aluminum accumulation in treatment using submerged membrane electro-bioreactor of young landfill leachate: Statistical analysis

Akkaya

Ayvaz-Cavdaroglu

Bilgili

2020

Environmental Research and Technology

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“…Ferric sulfate, a common coagulant, has shown potential in recovery and reuse. 33 It can be explored to lower the operating expense (OPEX) of drinking water treatment in developing communities. Electrocoagulation, a process that generates aluminum hydroxide coagulant, has also shown potential in decentralized water treatment.…”

Section: Coagulation and Flocculationmentioning

confidence: 99%

Review of low-cost point-of-use water treatment systems for developing communities

Pooi

2018

npj Clean Water

151

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For communities in developing countries, the majority of drinking water-related issues are due to pathogens from poor sanitation, resulting in infection and diarrhea. One cause of this is that these communities often do not have access to centralized water treatment facilities. Point-of-use (POU) systems are key solutions for treating water in developing communities; they are typically user-friendly, low cost, low maintenance, and grid-independent. Importantly, they treat and reduce the number of pathogens in water supplies, and many POU systems have been deployed and used by these communities, improving their livelihood. This review focuses on POU systems that cater to households or communities, with the aim to examine and evaluate technologies that have been implemented in POU systems in the past decade.

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“…Historicamente, as pesquisas sobre tecnologias de recuperação de coagulantes iniciaram-se em 1903 por meio de processos de acidificação (JE-WELL, 1903apud KEELEY et al, 2014. Diferentes métodos foram estudados para a recuperação de alumínio (PETRUZZELLI et al, 1998) e de ferro (VAEZI e BATEBI, 2001;KEELEY et al, 2016a). Métodos para o reúso e recuperação de coagulantes, suas potencialidade e fragilidades são mostrados na Tabela 2.…”

Section: Uso De Lodo De Eta Em Processos De Recuperação De Coagulanteunclassified

Uso benéfico de lodo de estações de tratamento de água e de tratamento de esgoto: estado da arte

Urban¹,

Isaac²,

Morita³

2019

RDAE

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Especialistas atualmente concordam que a abordagem tradicional de gerenciamento de resíduos sólidos com foco no final da etapa do processo produtivo (abordagem linear) não é suficiente num cenário com restrição cada vez maior de recursos naturais e financeiros. Assim, as novas estações de tratamento de água (ETAs) e de esgoto (ETEs) devem ser projetadas levando em consideração a prioridade na gestão e no gerenciamento dos resíduos sólidos, preconizada pela política brasileira, da Europa, do Japão e da China: a não geração, a redução, a reutilização, a reciclagem, o tratamento dos lodos e a disposição final apenas dos rejeitos. Para as ETAs e ETEs existentes, usos benéficos devem ser priorizados sobre as formas de transferência ou de disposição final. Neste artigo, diversos usos de lodos de ETAs e ETEs são apresentados e discutidos em relação ao seu potencial de aplicação. Conclui-se que a maioria das pesquisas é realizada em escala de laboratório e não se avalia a viabilidade ambiental. Nos países em desenvolvimento, ainda é incipiente o uso de lodos, o que não acontece nos desenvolvidos, que tornaram o uso benéfico uma realidade há mais de uma década. É importante destacar também que não basta verificar a viabilidade técnica e ambiental do uso pretendido para que ele seja aplicado em escala real, pois os problemas logísticos, a relação custo-benefício e o atendimento aos interesses e restrições de cada ator envolvido no processo influenciam significativamente. Palavras-chave: Resíduos de tratamento de água. Resíduos de tratamento de esgoto. Reúso de lodo. Resíduos sólidos. Gerenciamento integrado de resíduos.

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Coagulant recovery and reuse for drinking water treatment

Cited by 55 publications

References 22 publications

Aluminum accumulation in treatment using submerged membrane electro-bioreactor of young landfill leachate: Statistical analysis

Aluminum accumulation in treatment using submerged membrane electro-bioreactor of young landfill leachate: Statistical analysis

Review of low-cost point-of-use water treatment systems for developing communities

Uso benéfico de lodo de estações de tratamento de água e de tratamento de esgoto: estado da arte

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