Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
Chemosphere. 2016 Feb;144:671-80. doi: 10.1016/j.chemosphere.2015.08.087. Epub 2015 Sep 25.
Oil concentration levels in municipal waste water effluent streams are stringently regulated in most parts of the world. Apart from municipal waste, stricter oil/grease discharge limits are also enforced in oil and gas sectors as large volumes of produced water is being discharged to open ocean. One of the feasible, practical and established methods to remove oil substances from waste water sources is by gas flotation. In this overview, gas flotation technologies, namely dissolved and induced flotation systems, are discussed. Physico-chemical interaction between oil-water-gas during flotation is also summarized. In addition to a brief review on design advancements in flotation systems, enhancement of flotation efficiency by using pre-treatment methods, particularly coagulation-flocculation, is also presented.
世界上大多数地区都对城市污水废水中的含油浓度水平进行了严格的监管。除了城市废水外，在石油和天然气领域也执行了更严格的油/脂排放限制，因为大量采出水被排放到公海。从废水中去除油类物质的一种可行、实用且成熟的方法是气浮法。在本篇综述中，讨论了气浮技术，即溶解和气浮系统。还总结了浮选过程中油水气之间的物理化学相互作用。除了简要回顾浮选系统的设计进展外，还介绍了通过预处理方法（特别是混凝-絮凝）来提高浮选效率。
