Reactors and active biomass potential as inoculum for nitrogen removal

Autor(es)

Menezes, Rosana Oliveira ^[1] ; Delforno, Tiago Palladino ^[2] ; Silveira, Daniele Damasceno ^[3] ; Radojicic, Tijana ^[1] ; Lapolli, Flavio Rubens ^[3] ; de Oliveira Cruz, Luana Mattos ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, UNICAMP, Sch Civil Engn Architecture & Urbanism FEC, Ave Albert Einstein, 951, Cidade Univ Zeferino Vaz, BR-13083852 Campinas, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Biol, Lab Environm Microbiol, Rodovia Joao Leme dos Santos Km 110, BR-18052780 Sorocaba, SP - Brazil

^[3] Univ Fed Santa Catarina, UFSC, BR-88040900 Florianopolis, SC - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Bioresource Technology; v. 336, SEP 2021.
• Citações Web of Science: 0

Resumo

The potential of three different kind of reactors and active biomass to be used as inoculum for nitrogen removal was verified. Sludge samples were collected from a Membrane Bioreactor (MBR), a previous tank of a Moving Bed Biofilm Reactor (MBBR) and a Trickling Filter (TF). Samples were compared according to bacterial activity in batch tests and their microbiology (16 s rRNA sequences). The microorganisms examined were: AOB, NOB, anammox bacteria and OHO. Results showed that the richest sample was from MBR (Chao value equals 581). However, the bacterial activity was greater in MBBR sample (qAOO,NH4 equals 0.002 mgN center dot mgVSS-1 center dot h-1; qNOO, NO2\_NO3 equals 0.001 mgN center dot mgVSS-1 center dot h-1 and qNOX\_N2,SB equals 10.0 mgN center dot mgVSS-1 center dot h-1). Therefore, MBBR WWTP was shown to have the best inoculum and operating conditions for nitrogen conversion and removal. Besides, if aeration is provided as low as necessary for AOB to start the activity in denitrification tank, simultaneous partial nitrification, and denitrification (SPND) can occur. (AU)

• Processo FAPESP: 16/21586-1 - Remoção de compostos nitrogenados de efluentes anaeróbios envolvendo o processo anammox em filtros percoladores
• Beneficiário: Luana Mattos de Oliveira Cruz
• Modalidade de apoio: Auxílio à Pesquisa - Regular