Publication detail

Treatment of Hospital wastewater with submerged aerobic fixed film reactor coupled with tube-settler

Khan, N.A., Bokhari, A., Mubashir, M., Klemeš, J.J., El Morabet, R., Khan, R.A., Alsubih, M., Azam, M., Saqib, S., Mukhtar, A., Koyande, A., Show, P.L.

Original Title

Treatment of Hospital wastewater with submerged aerobic fixed film reactor coupled with tube-settler

Type

journal article in Web of Science

Language

English

Original Abstract

In this study, Hospital wastewater was treated using a submerged aerobic fixed film (SAFF) reactor coupled with tubesettler in series. SAFF consisted of a column with an up-flow biofilter. The biological oxygen demand (BOD)5, chemical oxygen demand (COD), nitrate and phosphate were the chosen pollutants for evaluation. The pollutants removal efficiency was determined at varying organic loading rates and hydraulic retention time. The organic loading rate was varied between 0.25 and 1.25 kg COD m−3 d−1. The removal efficiency of SAFF and tubesettler combined was 75 % COD, 67 % BOD and 67 % phosphate, respectively. However, nitrate saw an increase in concentration by 25 %. SAFF contribution in the removal of COD, BOD5 and Phosphate was 48 %, 46 % and 29 %, respectively. While for accumulation of nitrate, it was responsible for 56%, respectively. Tubesettler performed better than SAFF with 52 %, 54 % and 69 % reduction of COD, BOD5 and phosphate, respectively. But in terms of nitrate, tubesettler was responsible for 44 % accumulation. The nutrient reduction decreased with an increase in the organic loading rate. Nitrification was observed in the SAFF and tubesettler, which indicated a well-aerated system. An anaerobic unit is required for completing the denitrification process and removing nitrogen from the effluent. The better performance of tubesettler over SAFF calls for necessitates extended retention time over design criteria. Further studies are beneficial to investigate the impact of pharmaceutical compounds on the efficiency of SAFF.

Keywords

Hospital wastewater; Nutrients; Organic loading rate; Removal efficiency; Submerged aerobic fixed film; Tubesettler

Authors

Khan, N.A., Bokhari, A., Mubashir, M., Klemeš, J.J., El Morabet, R., Khan, R.A., Alsubih, M., Azam, M., Saqib, S., Mukhtar, A., Koyande, A., Show, P.L.

Released

1. 1. 2022

Publisher

Elsevier Ltd.

Location

PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

ISBN

0045-6535

Periodical

CHEMOSPHERE

Number

286

State

United Kingdom of Great Britain and Northern Ireland

Pages from

131838

Pages to

131838

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0045653521023109?via%3Dihub

BibTex

@article{BUT172445,
  author="Syed Awais Ali Shah {Bokhari} and Jiří {Klemeš}",
  title="Treatment of Hospital wastewater with submerged aerobic fixed film reactor coupled with tube-settler",
  journal="CHEMOSPHERE",
  year="2022",
  number="286",
  pages="131838--131838",
  doi="10.1016/j.chemosphere.2021.131838",
  issn="0045-6535",
  url="https://www.sciencedirect.com/science/article/pii/S0045653521023109?via%3Dihub"
}