Combination of microwave demulsification, ozone oxidation and biological aerated filter for advanced treatment of oilfield wastewater with low biodegradability | Zendy

Zhihong Kang | Zendy; Lei Zhou | Zendy; Qi Jiang | Zendy; Ziyi Zhang | Zendy; Hong-Kun Men | Zendy

Open Access

Combination of microwave demulsification, ozone oxidation and biological aerated filter for advanced treatment of oilfield wastewater with low biodegradability

Author(s) -

Zhihong Kang,

Lei Zhou,

Qi Jiang,

Ziyi Zhang,

Hong-Kun Men

Publication year - 2015

Publication title -

journal of water reuse and desalination

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.548

H-Index - 16

eISSN - 2408-9370

pISSN - 2220-1319

DOI - 10.2166/wrd.2015.002

Subject(s) - biodegradation , effluent , pollutant , aeration , wastewater , waste management , petrochemical , ozone , sewage treatment , residual oil , chemistry , engineering , organic chemistry

In this study, a combination process was developed in laboratory-scale including microwave demulsification, ozonation, and biological aerated filter (BAF) in series for the purpose of removing pollutants in oilfield wastewater with high microtoxicity. The microwave demulsification treatment removed 63.4% of oil. The ozonation treatment removed 79.3% of petroleum sulfonate, resulting in a substantial reduction of microtoxicity and great enhancement of biodegradability of the wastewater. During the following BAF process, the residual contaminants were effectively degraded by microbes. The final effluent could meet the emission standards for pollutants from petrochemical industry set by China's Environmental Protection Agency.

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