当前位置: X-MOL 学术Chem. Eng. Commun. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Coupled effect of organic fouling and scaling in the treatment of hyper-saline produced water using forward osmosis
Chemical Engineering Communications ( IF 2.5 ) Pub Date : 2022-09-23 , DOI: 10.1080/00986445.2022.2126768
Mustafa Al-Furaiji 1 , Mohammed Kadhom 2 , Basma Waisi 3 , Khairi Kalash 1
Affiliation  

Abstract

Hyper-saline water streams, such as the produced water from the oil industry, cannot be treated via the conventional desalination method, such as reverse osmosis (RO), due to the extreme required pressure to overcome the osmotic pressure. This research investigates the effect of oil fouling and cleaning behaviors when the forward osmosis (FO) process is applied to treat hyper-saline-produced water. Synthetic produced water with total dissolved solids (TDS) concentration of 240 g/l (contained Na, Ca, Mg, Fe, Cl, SO4, and CO3 ions) and oil content of 100 ppm was used as a feed solution. Also, two draw solutions, namely: ammonium bicarbonate (NH4HCO3) and magnesium chloride (MgCl2) of concentrations 6 M and 4.8 M, respectively, were utilized for the FO operation. Results showed that the MgCl2 draw solution provided significantly higher water flux than NH4HCO3 due to MgCl2’s high osmotic pressure and low scaling influence. Furthermore, the individual impact of oil was found to be low on the FO’s water flux. However, a synergistic effect between the oil and inorganic scaling was noticed. SEM technique was used to comprehend the observation and analyze the fouling content. Although the feed was a highly polluted stream, it was found that osmotic backwashing can recover more than 90% of the initial flux.



中文翻译:

正渗透处理高盐采出水时有机污垢和结垢的耦合效应

摘要

高咸水流(例如石油工业的采出水)无法通过传统的海水淡化方法(例如反渗透(RO))进行处理,因为克服渗透压所需的极端压力。本研究调查了应用正向渗透(FO)工艺处理高盐水时油污和清洁行为的影响。使用总溶解固体(TDS)浓度为240g/l(含有Na、Ca、Mg、Fe、Cl、SO 4 和CO 3离子)油含量为100ppm的合成采出水作为进料溶液。此外,还有两种汲取溶液,即:碳酸氢铵 (NH 4 HCO 3 ) 和氯化镁 (MgCl 2) 浓度分别为 6 M 和 4.8 M,用于 FO 操作。结果表明,由于MgCl 2的高渗透压和低结垢影响, MgCl 2驱动溶液提供的水通量明显高于 NH 4 HCO 3 。此外,发现油对 FO 水通量的影响较低。然而,人们注意到油和无机结垢之间存在协同效应。使用SEM技术来理解观察结果并分析污垢含量。尽管进料是高度污染的流,但发现渗透反洗可以恢复90%以上的初始通量。

更新日期:2022-09-23
down
wechat
bug