Treatment of Hospital Wastewater Using Activated Sludge with Extended Aeration

Custodio, María; Cuadrado-Campó, Walter; Peñaloza, Richard; Vicuña-Orihuela, Carmela; Torres-Gutiérrez, Elmer; Orellana, Edith

doi:10.12911/22998993/152991

Artykuł - szczegóły

Tytuł artykułu

Treatment of Hospital Wastewater Using Activated Sludge with Extended Aeration

Autorzy

Custodio María , Cuadrado-Campó Walter , Peñaloza Richard , Vicuña-Orihuela Carmela , Torres-Gutiérrez Elmer , Orellana Edith

Treść / Zawartość

Pełne teksty:

Pobierz

Identyfikatory

DOI

10.12911/22998993/152991

Warianty tytułu

Języki publikacji

Abstrakty

Hospital wastewater is of a complex nature and is generally discharged into urban sewage systems. This study evaluated the removal efficiency of organic and biological contaminants from a hospital wastewater treatment plant using extended aeration activated sludge. The study was conducted at a treatment plant scale, with 14 hours of feed. The plant consists of a pre-filter, a collector and crumbler tank, a homogenization tank, two biological reactors of 80 000 liters capacity each, two settlers and a contact disinfection chamber. Three flow rates of 3 L/s, 4 L/s and 5 L/s were tested in each biological reactor, with application of three concentrations of residual chlorine with sodium hypochlorite to the effluent of the settling tanks (0.3 ppm, 0.4 ppm and 0.5 ppm). The removal efficiency of suspended solids varied according to flow rate. The reactor with a flow rate of 3 L/s and 0.5 ppm of residual chlorine achieved the highest removal of suspended solids (91.95%), biological oxygen demand (97.52%) and fecal coliforms (99.99%). Finally, the quality of the hospital wastewater is within the limits of the national and international environmental quality thresholds.

Słowa kluczowe

suspended solids bacterial load activated sludge removal efficiency hospital wastewater

Wydawca

Polskie Towarzystwo Inżynierii Ekologicznej
Lublin University of Technology

Czasopismo

Journal of Ecological Engineering

Rocznik

2022

Tom

Vol. 23, nr 11

Strony

24--32

Opis fizyczny

Bibliogr. 41 poz., rys., tab.

Twórcy

autor

Custodio María

mcustodio@uncp.edu.pe

Facultad de Medicina Humana, Centro de Investigación en Medicinade Altura y Medio Ambiente, Universidad Nacional del Centro del Perú, Av. Mariscal Castilla No. 3909, Huancayo, Perú

https://orcid.org/0000-0003-1994-010X

autor

Cuadrado-Campó Walter

Universidad Nacional Autónoma Altoandina de Tarma, Jr. Huaraz 431, Tarma, Perú

autor

Peñaloza Richard

Facultad de Medicina Humana, Centro de Investigación en Medicinade Altura y Medio Ambiente, Universidad Nacional del Centro del Perú, Av. Mariscal Castilla No. 3909, Huancayo, Perú

autor

Vicuña-Orihuela Carmela

Universidad Nacional Autónoma Altoandina de Tarma, Jr. Huaraz 431, Tarma, Perú

autor

Torres-Gutiérrez Elmer

Universidad Nacional Autónoma Altoandina de Tarma, Jr. Huaraz 431, Tarma, Perú

autor

Orellana Edith

Facultad de Ciencias Forestales y del Ambiente, Universidad Nacional del Centro del Perú Av. Mariscal Castilla No. 3909, Huancayo, Perú

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Bibliografia

Identyfikator YADDA

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