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Master's Dissertation
DOI
10.11606/D.18.2017.tde-02022017-115701
Document
Author
Full name
Márcio Nemer Machado Sassim
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2001
Supervisor
Committee
Blundi, Carlos Eduardo (President)
Daniel, Luiz Antonio
Ferreira Filho, Sidney Seckler
Title in Portuguese
Avaliação dos processos de nitrificação e desnitrificação das águas residuárias de uma indústria química
Keywords in Portuguese
ABR
Carvão ativado em pó
Desnitrificação
Efluente industrial
Nitrificação
Pré-tratamento
Abstract in Portuguese
Um sistema de tratamento constituído de um reator anaeróbio de mistura completa e um reator anaeróbio compartimentado (ABR) foi operado durante 140 dias para estudar os efeitos do pré-tratamento das águas residuárias de uma indústria química, por carvão ativado em pó (CAP), e suas implicações nos processos de nitrificação e desnitrificação. Utilizou-se, no pré-tratamento do resíduo, duas concentrações de carvão ativado em pó. Para aplicação de 10 mg/l de CAP a remoção de DQO foi de 60% e a de NTK foi de 50%. Nesta fase, os processos de remoção de nitrogênio foram plenamente viabilizados. Para 5 mg/l de CAP a remoção de DQO foi de 44% e a remoção de NTK 46%, neste período se observou inibição por metais pesados e acúmulo de nitrito no sistema.
Title in English
Evaluation of nitrification-denitrification processes of wastewater of chemical industry
Keywords in English
Anaerobic baffled reactor (ABR)
Denitrification
Industrial wastewater
Nitrification
Powdered activated carbon (PAC)
Abstract in English
A treatment system composed of both an aerobic complete-mix reactor and a anaerobic baftled reactor (ABR) was operated for 140 days to study the effects of the treatment of wastewater chemical industry by powdered activate carbon (PAC) and its implications in nitrification - denitrification processes. In the residue preliminary treatment, two concentrations of PAC were used. For the application of 10 mg/l of CAP the removal of COD was 60% and the removal of TKN was 50%. In this phase, the processes of nitrogen removal were possible to be completely carried out. For 5 mg/l of CAP, the removal of COD was 44% and the removal of TKN 46%. In this period, the inhibition by heavy metaIs and nitrite accumulation in the system was observed.
 
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Publishing Date
2017-02-02
 
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