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目的对比分析烧结行业卫生防护距离与大气环境防护距离的差异,为制定合理卫生防护距离标准提供依据。方法对烧结企业的特征污染物进行无组织排放源源强的监测,分别采用地面浓度反推法和点源大气扩散模型计算卫生防护距离和大气环境防护距离。结果悬浮颗粒物是烧结行业无组织排放源的主要特征污染物;在当地近5年平均风速为<2 m/s、2至4 m/s及>4 m/s时,烧结企业卫生防护距离推荐值分别为1 000、900、800 m;在环境空气质量功能一类区和二类区的大气环境防护距离推荐值分别为800与400 m。结论通过对1989年标准的修订和完善,推荐的烧结行业卫生防护距离对敏感区居民健康的保护是合理可行的。
Objective To compare and analyze the difference between the health protection distance and the atmospheric environment protection distance in the sintering industry, and provide the basis for establishing the reasonable health protection distance standard. Methods The characteristic pollutants of sinter enterprises were monitored by the source of unorganized emission. The distance between health protection and atmospheric environment were calculated respectively by the ground concentration inversion method and point source atmospheric diffusion model. Results The suspended particulates were the main pollutants of the unorganized emission source in the sintering industry. When the average annual wind speed was less than 2 m / s, 2 to 4 m / s and> 4 m / s in the past 5 years, the sanitary protective distance of the sintering enterprises was recommended The values are 1 000,900,800 m respectively; the recommended values for the protection distance of atmospheric environment in the first and second category of ambient air quality function are 800 and 400 m respectively. Conclusion Through the revision and improvement of the 1989 standard, it is reasonable and feasible to recommend the health protection distance in the sintering industry to protect the health of residents in sensitive areas.