Pottekkatt Salini, George Jennipher, Zakkariya Riya, P N Christo, Nair Gouri, Gopal Madhu, Pawels Renu
Department of Biotechnology, Sahrdaya College of Engineering & Technology, Kodakara, Thrissur, Kerala, India.
School of Engineering, Cochin University of Science and Technology, Kochi, Kerala, India E-mail:
Water Sci Technol. 2025 Apr;91(8):977-992. doi: 10.2166/wst.2025.054. Epub 2025 Apr 15.
Automobile service stations are a significant contributor to environmental issues due to the release of harmful wastewater containing various pollutants like oils, grease, detergents, and organic and inorganic substances. Our study focused on treating this wastewater through both biological and UV-Fenton methods to target the removal of chemical oxygen demand (COD), turbidity, and oil and grease for potential reuse. In the biological approach, we isolated diverse microorganisms from the wastewater, and the predominant microorganism identified through 16S rRNA sequencing was . Key parameters, including pH (6.2) and incubation time (45.6 h), were optimized using response surface methodology (RSM) to enhance pollutant degradation. The microorganisms were immobilized on biofilm carriers, achieving significant reductions: 83% COD, 93% turbidity, and 67% oil and grease. For the second method, we employed a UV-Fenton-based advanced oxidation process, optimizing Fe dosage (42.4 mg/L) and HO concentration (412.1 mg/L). This process demonstrated substantial reductions: 89% COD, 95% turbidity, and 72% oil and grease. Combining both biological and UV-Fenton treatments in series yielded even better outcomes with reductions of 89% COD, 96% turbidity, and 78% oil and grease. This integrated approach proved highly effective in meeting wastewater quality standards, demonstrating significant pollutant reduction within acceptable limits.
汽车服务站是环境问题的重要来源，因为其排放的有害废水中含有各种污染物，如油、油脂、洗涤剂以及有机和无机物质。我们的研究重点是通过生物法和紫外 - 芬顿法处理这种废水，以去除化学需氧量（COD）、浊度以及油和油脂，实现潜在的再利用。在生物处理方法中，我们从废水中分离出多种微生物，通过16S rRNA测序鉴定出的主要微生物是 。使用响应面法（RSM）优化了包括pH值（6.2）和培养时间（45.6小时）在内的关键参数，以提高污染物降解效果。微生物被固定在生物膜载体上，实现了显著的去除率：COD去除率83%、浊度去除率93%、油和油脂去除率67%。对于第二种方法，我们采用了基于紫外 - 芬顿的高级氧化工艺，优化了铁离子用量（42.4mg/L）和过氧化氢浓度（412.1mg/L）。该工艺实现了大幅去除：COD去除率89%、浊度去除率95%、油和油脂去除率72%。将生物处理和紫外 - 芬顿处理串联起来产生了更好的效果，COD去除率89%、浊度去除率96%、油和油脂去除率78%。这种综合方法在满足废水质量标准方面被证明非常有效，在可接受的限度内实现了显著的污染物去除。
