垃圾渗滤液有机物浓度预测模型的建立及应用
Establishment and application of prediction model for organic concentration in landfill leachate
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摘要: 在分析垃圾渗滤液有机物浓度变化规律的基础上，建立垃圾渗滤液有机物浓度预测模型，并通过模拟填埋实验求出模型参数。该模型预测值与实测值之间具有接近90%的相关性，表明模型预测值基本上反映了实测值的变化规律。同时，将此模型应用到广西南宁市城南垃圾填埋场坝下区，对坝下区垃圾渗滤液有机物浓度变化规律进行预测。结果表明，坝下区垃圾渗滤液有机物浓度最大值为18 000 mg/L，随后快速下降，并在较长的时间内(1～3年内)保持在3 000 mg/L左右。直到封场后，垃圾渗滤液中有机物浓度仍然达到2 000 mg/L以上。Abstract: The prediction model of organic concentration in the landfill leachate is established in the article, which is on the basis of analyzing the organic concentration changing regulation. The model parameters are derived from the simulation experiment. The relativity between the predicted value and the measured value is about 90%, which means that the model can overall reflect the changing regulation factually. At the same time, the model is applied to predict the changing regulation of the organic concentration in the Dam area of Guangxi Nanning Southern Landfill. The result shows that the maximum value of the organic concentration comes up to 18 000 mg/L, then declines quickly, and the stable value maintains at about 3 000 mg/L in a long period ( within 1 to 3 years). Until the landfill is closed, the organic concentration in landfill leachate is still over 2 000 mg/L.
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