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  • Comparative analysis of hospital laboratory wastewater treatment techniques in Syrian Arab Republic / Abdalrhman Tattan;Fatimeh Jaara;Nowzete Nebghali
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Comparative analysis of hospital laboratory wastewater treatment techniques in Syrian Arab Republic / Abdalrhman Tattan;Fatimeh Jaara;Nowzete Nebghali

Tác giả : Abdalrhman Tattan;Fatimeh Jaara;Nowzete Nebghali

Nhà xuất bản : World Health Organization. Regional Office for the Eastern Mediterranean

Năm xuất bản : 2024

Chủ đề : 1. Environmental Health. 2. Syria -- methods. 3. Waste Disposal, Fluid -- chemistry. 4. Wastewater. 5. Water Purification. 6. Journal / periodical articles.

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Background:Hospital wastewater poses a significant threat to human health due to the presence of difficult-to-degrade organic compounds, active pharmaceutical ingredients and multiple inorganic substances that can pollute water resources and ecosystems.Aim:To compare the effectiveness of different techniques for removing organic load from hospital laboratory wastewater in Aleppo, Syria.Methods:We treated wastewater samples from hospital laboratories at Aleppo University Hospital, Syria, using several techniques, including biological treatment with the rotating biological contactor, adsorption with Syrian natural clay, coagulation with aluminium sulphate, advanced oxidation with ultrasound, and a combined treatment using natural clay and ultrasound. We assessed the organic load removal efficiency for each technique under different conditions.Results:The most effective technique was the combination of natural clay and ultrasound. Applying natural clay at a concentration of 1 g/L of wastewater along with ultrasound at 40 kHz for 30 minutes achieved chemical oxygen demand and biochemical oxygen demand values suitable for irrigation, in accordance with the Syrian standard. The chemical oxygen demand value decreased to 212 mg/L with 94% removal rate, and the biochemical oxygen demand value decreased to 82 mg/L with 87% removal rate.Conclusion:Based on our findings, techniques that combine different methods of hospital wastewater treatment, such as combining adsorption with advanced methods like ultrasound, are more effective than those that use single methods. Such techniques should be promoted.
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https://iris.who.int/handle/10665/380129