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Separation of emulsified crude oil from produced water by gas flotation: A review.
Wang, Ce; Lü, Yuling; Song, Chao; Zhang, Dechong; Rong, Feng; He, Limin.
  • Wang C; College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China.
  • Lü Y; College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China. Electronic address: lylchuyun@163.com.
  • Song C; College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China.
  • Zhang D; Xianhe Oil Production Plant, Shengli Oilfield Company, Sinopec, Shandong, Dongying 257000, China.
  • Rong F; College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China.
  • He L; College of Pipeline and Civil Engineering, China University of Petroleum (East China), Shandong, Qingdao 266580, China.
Sci Total Environ ; 845: 157304, 2022 Nov 01.
Article en En | MEDLINE | ID: mdl-35839883
ABSTRACT
The development and production of oil and gas fields would eventually result in a considerable amount of oily generated water, posing serious risks to humans and the environment. Nowadays, the oil concentration in the drainage stream of the produced water is strictly regulated, and many countries have established strict emission standards. As an indispensable oily wastewater treatment technology, flotation technology has attracted much attention because of its maturity, economy, practicality, and relative efficiency. Firstly, this paper summarizes and compares flotation techniques, such as dissolved gas flotation, induced gas flotation, electroflotation, and compact flotation units widely used in produced water treatment offshore in recent years. Considering the complexity of the mechanism of oil removal by air flotation, the mechanism of the oil droplet-bubble interaction is further discussed. The effects of flocculant, PH, and salinity on the oil droplet-bubble interaction in the flotation process were summarized from the perspective of the microscopic colloidal interface, which has a specific guiding role in improving the oil removal efficiency in the gas flotation process. Finally, the research status of produced water treatment by air flotation is summarized, and the feasible research direction is put forward.
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Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Petróleo / Purificación del Agua Tipo de estudio: Guideline Límite: Humans Idioma: En Año: 2022 Tipo del documento: Article

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Petróleo / Purificación del Agua Tipo de estudio: Guideline Límite: Humans Idioma: En Año: 2022 Tipo del documento: Article