Abstract

One of the complex environmental problems that triggers at present is oily wastewater contamination arising out of the activities related to engineering vehicular (automobile) workshop or garage, kitchens in houses and restaurants, gas stations, metal finishing house, petrochemical industry, edible oil production unit etc. Oily wastewater discharge is a major issue of environmental pollution in the present decade as some of its constituents are hazardous in nature. Hence, appropriate treatment technology for oily wastewater needs to be addressed. Biological treatment (BT) technique would be the best option in this regard, because it has multiple advantages over various other techniques as available today. BT degrades effectively the harmful constituents of oily wastewater into innocuous products that are environment friendly and it is considered to be the economical method. The resulting effluent of pretreatment followed by biological treatment of oily wastewater can be reused after conforming discharge limits. Again, numerous research works in these days have optimized the function and result of existing laboratory and pilot scale treatment technologies. This review paper describes a comprehensive understanding of the origin and characteristics, existing techniques in laboratory and pilot scale, screening of different methods, justification for advocating biological methods for treatment of oily wastewater.

摘要

当前引发的复杂环境问题之一是与工程车辆（汽车）车间或车库，房屋和餐馆的厨房，加油站，金属整理房，石化工业，食用油生产单位有关的活动引起的含油废水污染含油废水的排放是近十年来环境污染的一个主要问题，因为其某些成分本质上是有害的。因此，需要解决含油废水的适当处理技术。就这一点而言，生物处理（BT）技术将是最好的选择，因为与当今的其他各种技术相比，它具有多种优势。BT有效地将含油废水中的有害成分降解为对环境无害的无害产品，被认为是经济的方法。符合排放限值后，可对预处理后的含油废水进行生物处理的废水进行再利用。再次，如今的众多研究工作已经优化了现有实验室和中试规模处理技术的功能和结果。这篇综述文章描述了对起源和特征的全面了解，实验室和中试规模的现有技术，不同方法的筛选，提倡生物学方法处理含油废水的理由。符合排放限值后，可对预处理后的含油废水进行生物处理的废水进行再利用。再次，如今的众多研究工作已经优化了现有实验室和中试规模处理技术的功能和结果。这篇综述文章描述了对起源和特征的全面了解，实验室和中试规模的现有技术，不同方法的筛选，提倡生物学方法处理含油废水的理由。符合排放限值后，可对预处理后的含油废水进行生物处理的废水进行再利用。再次，如今的众多研究工作已经优化了现有实验室和中试规模处理技术的功能和结果。这篇综述文章描述了对起源和特征的全面了解，实验室和中试规模的现有技术，不同方法的筛选，提倡生物学方法处理含油废水的理由。