Development of Advanced Recovery-Separation-Degradation Solutions for Green Treatment of Oily Sludge from Petroleum Industry

石油工业含油污泥绿色处理先进回收分离降解解决方案开发

• 批准号: RGPIN-2016-05801
• 负责人: Liu, Lei
• 金额: $ 1.75万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=679644
• 关键词: Development; Advanced; Recovery; Separation; Degradation

Oily sludge is a major hazardous waste generated in large volumes from the petroleum industry. Due to its toxic nature, safe disposal of oily sludge becomes challenging and costly. Economic losses can be incurred if the valuable oil is not recycled from the sludge. Previously, various methods were developed to investigate sludge oil recovery, however, mixed results have been obtained and furthermore little attention has been given to the quality of the recovered oil. In terms of the conventional oil sludge disposal approaches, most of them are either inadequate to meeting environmental standards or having various limitations. Besides, large volume of high-content oily wastewater is generated from the sludge disposal and little attention has focused on its effective treatment. Thus, there are growing interests for better oily sludge recovery and treatment solutions. In response to the needs, the proposed research will focus on the advancement and development of novel and green oil recovery and waste disposal technologies. The perspectives of Recovery (of oil), Separation (of wastes), and Degradation (of hydrocarbons) are the main mechanisms for achieving the goals through the following designed tasks: (1) To develop advanced oil recovery approaches with improved oil recovery efficiency and high-purified oil quality through using an integrated techniques of supercritical fluid extraction (SFE) and differential scanning calorimetry (DSC); (2) To discover new microbial strains with high capabilities in producing bio-surfactants and recovering oil from sludge, and their ability in recovering oil will be assessed through an optimized sludge washing process; (3) To explore the biodegradability of residual sludge (i.e., the sludge after its majority of oil being recover by bio-surfactant and SFE techniques) under designed bio-augmentation scenarios for further waste disposal; (4) To develop a submerged PTFE-membrane-bioreactor microfiltration-adsorption unit (PTFE-MABR) through using a new synthetic membrane material and a green process design for handling large volume of high-content oily wastewater generated from the sludge treatment process. A variety of absorbents will be used in conjunction with the MBR unit to remove the impurities in the wastewater effluent. The proposed research will focus on Canada's oily sludge issue and aims to develop green technologies for improving oily sludge management practices in Canada. The research outputs will be informative for sound design of oily sludge treatment in industrial application, and will eventually benefit petroleum industrial stakeholders, Canadian communities and environment. The proposed research will also help train a number of HQPs for enhancing their abilities to address Canada's future environmental challenges.********

含油污泥是石油工业大量产生的主要危险废物。由于其有毒性质，含油污泥的安全处置变得具有挑战性且成本高昂。如果不从污泥中回收有价值的油，可能会造成经济损失。以前，开发了各种方法来研究污泥油回收，然而，已经获得了混合的结果，而且很少关注回收油的质量。传统的油泥处置方法大多不符合环保标准或存在诸多局限性。此外，污泥处置过程中产生大量高含量含油废水，其有效处理方法研究较少。因此，人们越来越关注更好的含油污泥回收和处理解决方案。为回应有关需要，建议的研究将集中于推进及发展新颖及绿色的石油回收及废物处理技术。石油回收、分离的前景（废物）和降解（1）采用超临界流体萃取（SFE）和差示扫描量热法（DSC）相结合的技术，开发出提高采收率和高纯原油质量的先进采油技术;（2）寻找具有产生物表面活性剂和污泥采油能力的新菌株，并通过优化污泥洗涤工艺评价其采油能力;（3）探索剩余污泥的生物降解性（即，（4）采用新型合成膜材料和绿色工艺设计，开发一体式PTFE-膜-生物反应器微滤-吸附装置（PTFE-MABR），用于处理污泥处理过程中产生的大量高含量含油废水。各种吸附剂将与MBR装置一起使用，以去除废水中的杂质。拟议的研究将侧重于加拿大的含油污泥问题，旨在开发绿色技术，以改善加拿大的含油污泥管理做法。研究成果将为工业应用中含油污泥处理的合理设计提供信息，并最终使石油工业利益相关者，加拿大社区和环境受益。拟议的研究还将有助于培训一些HQP，以提高他们应对加拿大未来环境挑战的能力。