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Avaliação do uso de agente lastrante no controle do intumescimento filamentoso em sistema de lodos ativados utilizando efluentes de fábrica de papel reciclado

Authors: Hygor Aristides Victor Rossoni | Ana Augusta Passos Resende Ann Honor Mounteer | Cláudio Arcanjo de Sousa | Cláudio Mudado Silva José Lívio Gomide; Hygor Aristides Victor Rossoni; Ana Augusta Passos Resende; Ann Honor Mounteer; Cláudio Arcanjo de Sousa; Cláudio Mudado Silva; José Lívio Gomide; +1 Authors

Avaliação do uso de agente lastrante no controle do intumescimento filamentoso em sistema de lodos ativados utilizando efluentes de fábrica de papel reciclado

Abstract

Com o objetivo de testar o uso de agente lastrante – talco – para o controle do intumescimento filamentoso do lodo, foi utilizado lodo biológico com alto teor de bactérias filamentosas da espécie Tipo 021N obtido de uma fábrica de papel reciclado. O experimento consistiu de um sistema de tratamento biológico em batelada, operado com uma idade de lodo de dez dias. Foram construídos cinco reatores biológicos e dosadas diferentes concentrações de talco: 0%, 25%, 50%, 75% e 100% em relação aos sólidos suspensos totais no tanque de aeração. Adições sucessivas de talco contribuíram para a redução do índice volumétrico do lodo, sendo que as dosagens de 75% e 100% foram as mais eficientes. A presença do talco não interferiu na atividade biológica, no entanto, verificou-se a necessidade de promover um maior descarte de lodo para a manutenção de condições operacionais. A adição do talco teve efeito temporário, sendo necessárias repetidas adições para manutenção de baixo índice volumétrico do lodo.

Keywords

Environmental sciences, lodos ativados, índice volumétrico do lodo, agente lastrante, Environmental engineering, intumescimento filamentoso, GE1-350, TA170-171, Environmental technology. Sanitary engineering, TD1-1066

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
gold
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