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

Khan, Nadeem Ahmad; Bokhari, Awais; Mubashir, Muhammad; Klemeš, Jiří Jaromír; Morabet, Rachida El; Khan, Roohul Abad; Alsubih, Majed; Azam, Muhammad; Saqib, Sidra; Ahmad, Mahmood; Koyande, Apurav Krishna; Show, Pau Loke

doi:10.1016/j.chemosphere.2021.131838

Cited by 19 publications

(3 citation statements)

References 48 publications

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“…The nature of the model and the coefficient values, point to a high R 2 value of 0.97. The findings associated to this model aligns perfectly for the COD [52]. was plotted to determine the biokinetic coefficients (see Fig.…”

Section: Grau Second-order Substrate Removal Modelmentioning

confidence: 52%

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Parametric optimization and kinetic modelling for organic matter removal from agro-waste derived paper packaging biorefinery wastewater

Jagaba

Kutty

Noor

et al. 2022

Biomass Conv. Bioref.

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state-of-the-art paper packaging biorefinery utilizes cellulose fibrous material from paddy straw and papaya latex to produce packaging products. This in turn generate wastewater with high organic matter content that if disposed without treatment, will pollute water bodies, and affect aquatic life below water. Therefore, to comply with "clean water and sanitation" (SDG 6) and "life below water" (SDG 14), this study assesses the efficacy of an extended aeration activated sludge (EAAS) in the treatment of paper packaging biorefinery wastewater (PPBW) by employing paddy straw derived activated carbon as a biosorbent. Findings revealed that the system was able to achieve 95%-98.2% and 90.62%-94.96% biological oxygen demand (BOD5) and chemical oxygen demand (COD) reduction respectively. The maximum organic matter removals were achieved at 2-day hydraulic retention time (HRT) and 60% PPBW concentration. To evaluate substrate removal rates, the First order, Modified Stover-Kincannon and Grau second order models were used. In the Modified Stover-Kincannon model, high correlation coefficients values R 2 of 0.99986 and 0.99991 were obtained for COD and BOD5 respectively. 20 gCOD/L/d and 50 gBOD5/L/d were obtained as Umsr for COD and BOD5 respectively and 20.402 g/L/d and 56.295 g/L/d as KV constants for COD and BOD5 respectively. The COD and BOD5 biokinetic constant values for the Grau second order organic matter removal rate constant kS were 36 d -1 and 0.78 d -1 respectively. Here, 0.9989 and 0.99928 were the obtained R 2 values for COD and BOD5 respectively. The EAAS bioreactor system described by modified Stover-Kincannon model was proven to best suit the experimental data. Therefore, the model can be used in designing an EAAS system and consequently predict the bioreactor behavior. The result of this study provided a benchmark for the actual implementation of PSAC in PPBW treatment for COD and BOD5 removal. It has been proven that PSAC bio-sorbent sourced from a natural agro-waste material is essential and could be used as an efficient substance for organic matter removal. Operating expenses and associated savings were such that PASC was more attractive in an economic analysis of wastewater treatment demands. It is environmentally benign and offers a green treatment option to the PPBW. It could be an alternative to chemical materials because it is harmless to human health and proffer sustainable solution to potable water production.

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Section: Grau Second-order Substrate Removal Modelmentioning

confidence: 52%

“…These results are consistent with those of [51], who computed k1 to be 14.55 per day with a correlation coefficient of 0.742. Likewise, after drawing first order graphs, [52] coefficients for k1 and R 2 were measured as 1.257 and 0.41, respectively.…”

Section: First Order Substrate Removal Modelmentioning

confidence: 99%

Parametric optimization and kinetic modelling for organic matter removal from agro-waste derived paper packaging biorefinery wastewater

Jagaba

Kutty

Noor

et al. 2022

Biomass Conv. Bioref.

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“…Due to the detrimental effects of wastewater on the environment and ecosystem after discharge, wastewater treatment is a major global concern. This has caused a number of treatment procedures to be looked into for their efficacy on a worldwide scale (Khan et al 2022). The past has seen the proposal of multiple guidelines for environmental risk assessment by various agencies (ANSES, 2011; EC, 2003; EMA, 2006; US EPA, 1992a, US EPA, 1996, US EPA, 2011a).…”

Section: Introductionmentioning

confidence: 99%

Cleaning and Management of Water Contaminated with Pesticides through the Process of Adsorption in the Natural Clay of Brari

Behrami,

Berbatovci,

Xhaxhiu

et al. 2024

Ecol. Eng. Environ. Technol.

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This study aimed to investigate the potential for widespread application of clay in the purification of water polluted with pesticides and water management through the absorption and desorption of dimethoate and methomyl in the natural clay of Brari (Tirana). While the maximum adsorption of methomyl on Brari clay was reached in 12 hours, the maximum adsorption of dimethoate on Brari clay was reached in 48 hours. To compare the adsorption of methomyl and dimethoate on Brari clay, their water degradation time was also taken into account. Dimethoate dissolves quickly; a contact period of 1-2 hours is sufficient to desorb 81.2% of the material. Dimethoate dissolves in water at 25 °C and has a half-life t 1/2 = 30 days. Methomyl is desorbed even faster; in just two hours, 96.2% of the material is desorbed. At 25 °C, dimethoate has a half-life of t 1/2 = 14 days and a high solubility of 58 g/L in water. Because methomyl and dimethoate bind poorly to clay, they can contaminate surface and groundwater.

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Hybrid Aerobic Wastewater Treatment Systems

Ghangrekar¹

2022

Wastewater to Water

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

Cited by 19 publications

References 48 publications

Parametric optimization and kinetic modelling for organic matter removal from agro-waste derived paper packaging biorefinery wastewater

Parametric optimization and kinetic modelling for organic matter removal from agro-waste derived paper packaging biorefinery wastewater

Cleaning and Management of Water Contaminated with Pesticides through the Process of Adsorption in the Natural Clay of Brari

Hybrid Aerobic Wastewater Treatment Systems

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