Environmental Engineering Research

  • 제22권3호
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  • Pages.277-280
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  • 2017
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  • 1226-1025(pISSN)
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  • 2005-968X(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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Resource recovery and harmless treatment of waste oil-in-water drilling fluid

  • Tang, Chao (Engineering and Technology College, Yangtze University) ;
  • Xie, Shui Xiang (CNPC Research Institute of Safety & Environment Technology)
  • 투고 : 2016.12.14
  • 심사 : 2017.02.14
  • 발행 : 2017.09.30
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초록

Destablization and demulsification is a difficult task for the treatment of waste oil-in-water drilling fluid because of its "three-high" characteristics: emulsification, stabilization and oiliness. At present, China is short for effective treating technology, which restricts cleaner production in oilfield. This paper focused on technical difficulties of waste oil-in-water drilling fluid treatment in JiDong oilfield of China, adopting physical-chemical collaboration demulsification technology to deal with waste oil-in-water drilling fluid. After oil-water-solid three-phase separation, the oil recovery rate is up to 90% and the recycled oil can be reused for preparation of new drilling fluid. Meanwhile, harmless treatment of wastewater and sludge from waste oil-in-water drilling fluid after oil recycling was studied. The results showed that wastewater after treated was clean, contents of chemical oxygen demand and oil decreased from 993 mg/L and 21,800 mg/L to 89 mg/L and 3.6 mg/L respectively, which can meet the requirements of grade one of "The National Integrated Wastewater Discharge Standard" (GB8978); The pollutants in the sludge after harmless treatment are decreased below the national standard, which achieved the goal of resource recovery and harmless treatment on waste oil-in-water drilling fluid.

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참고문헌

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피인용 문헌

  1. Construction of BiOBr0.5Cl0.5 heterojunctions for photocatalytic treatment of waste drilling fluid in oilfield vol.814, pp.1, 2017, https://doi.org/10.1088/1755-1315/814/1/012007
  2. Design and realization of the supervision system for the harmless treatment of building waste based on LCA vol.836, pp.1, 2021, https://doi.org/10.1088/1755-1315/836/1/012013
  3. Environmental impacts related to drilling fluid waste and treatment methods: A critical review vol.310, pp.no.pb, 2017, https://doi.org/10.1016/j.fuel.2021.122301