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Chinese Journal of Applied Ecology ›› 2017, Vol. 28 ›› Issue (9): 3041-3049.doi: 10.13287/j.1001-9332.201709.029

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Optimization and simulation on purification of petroleum pollutants in wetland water of Liaohe River estuary, China.

MA Yu1,2, WU Bo1,3, LI Feng-mei1,3, GUO Shu-hai1,3*   

  1. 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2University of Chinese Academy of Sciences, Beijing 100049, China;
    3National-Local Joint Engineering Laboratory of Contaminated Soil Remediation by Bio-physicochemical Synergistic Process, Shenyang 110016, China.
  • Received:2017-01-06 Online:2017-09-18 Published:2017-09-18
  • Contact: * E-mail: shuhaiguo@iae.ac.cn
  • Supported by:

    This work was supported by Major Project of National Water Pollution Control and Management Technology of China (2013ZX07202-007).

Abstract: The level of oil pollution and purification efficiency of wetland water in Shuguang area of Liaohe oilfield were analyzed comprehensively by plot investigation and system simulation. The estimation model of petroleum pollutants purification capacity was built correspondingly based on Monte Carlo method. Furthermore, according to its natural features, water flow andnutritional factors such as nitrogen and phosphorus were regulated to obtain an optimal design of purification ability in different wetland units. The results indicated that the ability to purify petroleum pollutants was different in each research unit, which mainly resulted from the differences in structure of the wetland and in its internal features. Under natural conditions, the purification efficiency of petroleum pollutants was 5.4%, and the average residual concentration was about 1.05 mg·L-1. After optimization, the removal rate of petroleum pollutants increased to approximately 20%. The constructed optimization and simulation methods of wetland purification could provide an important technical tool for the removal of petroleum pollutants in the Liaohe River estuary wetland water.