山谷型垃圾填埋场臭气逸散规律

Odor Emission Rule in a Valley-type Landfill

通过在天子岭填埋场进行为期1 a的填埋库区二氧化碳、硫化氢、氨气及气象因素在线连续监测,研究了恶臭气体的逸散规律。结果表明:臭气在晚间18:00至凌晨6:00浓度较高,这与晚间风速低、逆温层存在等不利于扩散有关;1—5月及10—12月臭气浓度较高。结合气象数据分析,臭气浓度较高的原因可能与风速、风向、温度和气压相关,与湿度关联不大。

The concentrations of carbon dioxide,hydrogen sulfide,ammonia and meteorological factors were monitored using online detection equipment for one year in Tianziling landfill.The results showed that the concentration of odor was higher from 6 p.m.to 6 a.m.This may be due to the low wind speed and the existing of inversion layer in the night times.The odor concentrations were the higher from January to May and October to December.Combined with the analysis of meteorological data,the reasons for the higher odor concentration may be related to wind speed,wind direction,temperature and pressure,but not related to humidity.