填埋場滲瀝液污染地下環境及防污屏障立項報告

朱偉++胡黎明

摘要：我國生活垃圾的含水率高，滲瀝液產量大，填埋場內滲瀝液浸潤線普遍偏高。同時，不同時代建設的垃圾填埋場防滲系統層次不齊，很多都存在發生滲漏的風險。滲瀝液滲漏的條件、方式；滲漏后污染物的遷移-彌散過程及濃度與范圍的預測；針對滲漏的污染防治措施都是非常關注的重要問題。本課題著重針對滲瀝液及其污染物擊穿防污屏障過程及在地下環境中的擴散問題，在污染物和顆粒之間的界面行為；滲漏的優勢流方式；滲漏過程的模擬實驗；滲漏后的防治技術；滲漏的指示性有機污染的示蹤方面將進行重點的研究和分析。認為我國垃圾填埋場滲瀝液的滲漏可能會出現劣化型滲漏、集中型滲漏、全面型的滲漏3種類型。針對這3種類型的滲漏現象將提出一些預測、防治的新原理和新方法，旨在為我國既有填埋場環境災害防控和新建可持續填埋場建設提供科學依據。

關鍵詞：固體廢棄物；滲瀝液；防污屏障；滲漏；污染物；遷移-彌散

Leachates influence on the underground environ- ment and the antifouling barrier initial report

Abstract：For the high moisture content of domestic waste and the large production of leachate in China， the saturation line of leachate in landfill is generally high. At the same time， the level of waste landfills seepage control system constructed in different times is greatly various， so many of them exist the risk of leakage. The conditions and ways of leakage， the migration-dispersion process after leakage， the forecast for concentration and range of pollutants and the control measures of pollutions against leakage are very important issues of concern. This subject focuses on leachate， the breakdown process of anti-fouling barrier and dispersion problems in the underground environment. The interface behavior between pollutants and granules， the preferential flow of leakage， simulation experiment in the process of leakage， the control techniques after leakage， the tracer of indicative organic pollution of leakage have been focused research and analysis. It is believed that the leakage of waste landfills leachate in China may occur deterioration type， concentrated type and comprehensive type. For these 3 types of leakage， we present some new principles and methods of forecast and prevention， aiming at offering scientific basis for the environmental disasterous prevention and control of existing landfill and the construction of new sustainable landfill in China.

Keywords：solid waste； leachate； antifouling barrier； leakage； contaminant； migration-dispersion

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