Aluminium in drinking water

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I am in the need of some inputs about how to remove aluminium from drinking water. 

The values of aluminium shift due to the season but sometimes can reach over 300 mg/L. The idea was to test a strong cationic ion exchange resin. But the results were not quiet good enough...the performance of the filtration was below expectations...

So my question is, if the aluminium is in the complex form and not in the ionic form...since the source of the water is a lagoon and can have some amount of organic matter, even that at the moment the water treatment plant keeps all parameters fulfilling the legislation, with the exception of aluminium...Any ideas on what can I do?

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16 Answers

  3. Coloca a questão e não acompanha... vamos responder?

  4. There is the file

  5. About alkalinity... what is the value. Do you already used lime solution??

    I agree that there is a solution: ionizing radiation. 

     

    See the attached file: It is in purtuguese

  6. I don't anderstand why how a water can be 300mg/l of aluminiun. 

  7. What is the pH of this water?

     

  8. Use aluminium sulfate in combination with lime. Al content will then be much lower than limits

    BR

    Jörg

  9. Good Afternoon Mr. Lopes,

    Please provide complete water analysis and advise daily volume required and flow rate.

    Awaiting your reply and warmest regards,

     

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  11. try Ultra Filtration and another idea is lime softening (adding CaOH2) and precipitating

    1 Comment

    1. Agree with Rami E. Kremesti MSc, CSci, CEnv, CWEM lime softening could lead to aluminum hydroxide formation which results in particle settling. If the water flow is high consider tube settlers to reduce the size of the settling tank. 

  12. Do a quick filterability test with some Wattman paper or a small 5 micron filter to see if that polishes out the residual and if it works put it ahead of the cation softener.

  15. https://aguassubterraneas.abas.org/asubterraneas/article/view/27538

     

    REMOÇÃO DE ALUMÍNIO EM SISTEMA CONTÍNUO POR COLUNA DE LEITO FIXO DE CARVÃO ATIVADO – EFEITO DA GRANULOMETRIA

    LETÍCIA RAQUEL DE OLIVEIRA, JULIANO SILVA MARTINS ALMEIDA, MOILTON RIBEIRO FRANCO JUNIOR

     

    Resumo

     

    Com o desenvolvimento industrial cada vez mais acelerado, a degradação do
    meio aquático tem crescido significativamente, sendo a principal fonte poluidora as
    indústrias. Entre os métodos classicos de tratamento de efluentes, a adsorção apresenta
    vantagens como a baixa geração de resíduos, fácil recuperação dos metais e a
    possibilidade de reutilização do adsorvente. Assim, este método foi o utilizado neste
    estudo, no tratamento de efluente líquido sintético contaminado por alumínio, com o
    objetivo de redução da sua concentração no efluente final. Foi empregada uma coluna de
    leito fixo de carvão ativado de bancada e os resultados se mostraram satisfatórios
    principalmente para as granulometrias de 200 e 270 mesh.

    Veja esse rtigo.

     

    Atenciosamente.

    prof. Carlos Catunda