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cje ›› 2005, Vol. ›› Issue (8): 930-934.

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Optimization of main designed parameters of artificial rapid infiltration land treatment system-COD removal

GUO Wei1,2,3, LI Peijun1, TAI Peidong1, YIN Wei1, LI Haibo1, XU Huaxia1   

  1. 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110015, China;
    2. Graduated School of Chinese Academy of Sciences, Beijing 100085, China;
    3. College of Agronomy, Shenyang Agricultural University, Shenyang 110161, China
  • Received:2004-10-07 Revised:2005-01-19 Online:2005-08-10

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Abstract: In this paper,the Artificial Rapid Infiltration System (ARI) was simulated under laboratory conditions,and the main designed parameters including the component of artificial soil (quartzite/soil) and running circle (flooding time and flooding time/drying time) for the highest removal rate of COD were optimized. The stable removal rate of COD was obtained by the reciprocal equation method,and the model of multi-linear regression equation was established by stepwise regressive method.The optimizing parameters of ARI were x1 (quartzite/soil)=1.073,x2 (flooding time)=4 h,and x3 (flooding time/drying time) =1/8,and the highest theoretical removal rate of COD was 84.73%,which was accordant with the practical value,indicating that the method was feasible.The model also suggested that there was an interaction between the component of artificial soil and the flooding time /drying time.

Key words: Ecosystem, Purifying service, Value

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