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Sequential biological and solar photocatalytic treatment system for greywater treatment.
Priyanka, Kumari; Remya, Neelancherry; Behera, Manaswini.
Afiliação
  • Priyanka K; School of Infrastructure, Indian Institute of Technology, Bhubaneswar, Odisha 752050, India E-mail: remya@iitbbs.ac.in.
  • Remya N; School of Infrastructure, Indian Institute of Technology, Bhubaneswar, Odisha 752050, India E-mail: remya@iitbbs.ac.in.
  • Behera M; School of Infrastructure, Indian Institute of Technology, Bhubaneswar, Odisha 752050, India E-mail: remya@iitbbs.ac.in.
Water Sci Technol ; 86(3): 584-595, 2022 Aug.
Article em En | MEDLINE | ID: mdl-35960838
In this study, sequencing batch reactor (SBR) using anaerobic/aerobic/anoxic process was coupled to a solar photocatalytic reactor (SPCR) for greywater treatment. The greywater effluent from SBR (operated at the optimal condition: 6.8 h hydraulic retention time (HRT), 0.7 Volumetric exchange ratio (VER) and 7.94 d solids retention time (SRT) with optimal corn cob adsorbent dosage (0.5 g/L)) was fed to the SPCR (operated at optimal conditions: pH - 3, H2O2 dosage - 1 g/L, catalyst dosage - 5 g/L). Chemical oxygen demand (COD) removal of 92.8±0.5% and ∼100% were achieved in SBR and SBR-SPCR, respectively. Similarly, total organic carbon (TOC) removal of 91±0.9% and ∼100% were observed in SBR and SBR-SPCR, respectively. After SBR treatment, average total nitrogen (TN) removal of 84% was found and this TN removal increased to 93% after combined SBR-SPCR treatment. The maximum PO43-_P reduction of 80±1.5% % was achieved with SBR-adsorption system. In addition, a maximum of 87±0.9% of net PO43-_P removal was reached after SBR-SPCR treatment. 58.9±2.3% BP (benzophenone-3) removal was obtained in the SBR while the integration of SBR and SPCR treatment was resulted in 100% BP removal. An effective anionic surfactant (AS) removal rate (80.1±2.2%) was observed in the SBR phase, which further improved to 94.9±1% at the end of 4 h SPCR treatment.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Reatores Biológicos / Peróxido de Hidrogênio Idioma: En Revista: Water Sci Technol Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Reatores Biológicos / Peróxido de Hidrogênio Idioma: En Revista: Water Sci Technol Ano de publicação: 2022 Tipo de documento: Article