由于二恶英类物质种类较多，检测过程复杂，测试成本高，而目前的环境监测手段和技术力量还不足以对环境中二恶英进行全面而持续性的监测，因此，数值模拟方法是一种必要而有效的方法。以某垃圾焚烧厂为研究对象，测定了废气排放源与周围环境空气中的二恶英浓度水平，并在此基础上分别运用AER-MOD和CALPUFF模式对焚烧厂二恶英大气污染扩散进行了模拟验证。结果表明，我国现行的二恶英排放控制标准较为落后，应该逐步提高标准并尽快出台二恶英环境空气质量标准；2种模型均可以较好地使用在二恶英浓度预测中，并且在复杂地形与风场的情况下，AERMOD具有更好的适用性。%There are various kinds of dioxin .The testing processes are complex ,test cost is quite high and the current envi-ronmental monitoring methods and technologies are not competent to continuous monitoring of dioxins in the environment .As a result ,the numerical simulation method is a necessary and effective method .Based on a certain incinerator as the research object ,the gas emission sources and environmental dioxin levels in the atmosphere are determined in this paper ,further-more ,the AERMOD and CALPUFF mode is used to stimulate and verify the diffusion of dioxin pollution from the incinera-tor .The result shows that the current control standard of dioxin emission is relatively backward ,it should be gradually im-proved and the air quality standard of dioxin should be introduced in time .The two models are good correlation in prediction of the dioxins concentration .Under the condition of the complex topography and the wind field ,AERMOD has better appli-cability .
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