Nutrient and pathogen removal from anaerobically treated black water by microalgae

Autor(es)

Miranda Slompo, Nathalie Dyane ^[1] ; Quartaroli, Larissa ^[2] ; Fernandes, Tania Vasconcelos ^[3] ; Ribeiro da Silva, Gustavo Henrique ^[2] ; Daniel, Luiz Antonio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo EESC USP, Dept Hydraul & Sanitat, Sao Carlos, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Dept Environm & Civil Engn, Bauru, SP - Brazil

^[3] Netherlands Inst Ecol NIOO KNAW, Dept Aquat Ecol, Wageningen - Netherlands

• Tipo de documento: Artigo Científico
• Fonte: Journal of Environmental Management; v. 268, AUG 15 2020.
• Citações Web of Science: 0

Resumo

The demand for systems that efficiently and sustainably recover value-added compounds and materials from waste streams is a major challenge. The use of wastewater as a source for recovery of carbon and nutrients is an attractive and sustainable alternative. In this study, anaerobically treated black water was treated in photobioreactors (PBRs) inoculated with Chlorella sorokiniana, and the process was investigated in terms of phosphorus and nitrogen removal, biomass growth, and the removal of pathogens. The consumption of bicarbonate (alkalinity) and acetate (volatile fatty acids) as carbon sources by microalgae was investigated. The average nutrient removal achieved was 66% for N and 74% for P. A high consumption of alkalinity (83%) and volatile organic acids (76%) was observed, which suggests that these compounds were used as a source of carbon. The biomass production was 73 mg L-1 day(-1), with a mean biomass of 0.7 g L-1 at the end of the batch treatment. At the end of the experiments, a log removal/inactivation of 0.51 log for total coliforms and 2.73 log for Escherichia coli (E. coli) was observed. The configuration used, a flat-panel PBR operated in batch mode without CO2 supplementation, is a cost-effective and environmentally sustainable method for recovering of nutrients and production of algal biomass. (AU)

• Processo FAPESP: 13/50351-4 - Recovering nutrients and carbon from concentrated black water: a sustainable decentralized approach for wastewater treatment
• Beneficiário: Luiz Antonio Daniel
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 15/04594-8 - Avaliação de processos de remoção e de inativação de Giardia spp., Cryptosporidium spp. e microrganismos indicadores em águas negras previamente tratadas sequencialmente por Reator UASB, fotobiorreator e flotação
• Beneficiário: Nathalie Dyane Miranda Slompo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/13581-5 - 15th International Specialised Conferences on Small Water and Wastewater Systems and 7th Specialized Conference on Resources Oriented Sanitation
• Beneficiário: Gustavo Henrique Ribeiro da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Reunião - Exterior