摘要
为探究北方猪场产生的有害气体在自然风场影响下的扩散及浓度分布情况,根据Ecotect中长春地区气象文件,在ANSYS CFX中对研究猪场不同风向风速下有害气体的扩散及浓度分布进行了表征。结果表明:长春地区全年风频分布以西南风为主,然后依次为西风、南风、北风,占总风频的80%;猪场生活区在西南风、西风和南风来流时不会受到生产区有害气体的影响,但在北风来流时受有害气体影响严重,建议设置防护屏障;根据恶臭强度7点评价法计算得出,猪场周边最小恶臭防护距离为300 m,且需要在生活区与生产区之间设置防护屏障,否则在北风来流情况下,场区周边污染范围将远超300 m。
In order to investigate the diffusion and concentration distribution of harmful gases produced by piggery in the North under the influence of natural wind field,the diffusion and concentration distribution of harmful gases in different wind directions of piggery were characterized by ANSYS CFX according to the meteorological documents of Changchun area in Ecotect.The results show that the distribution of wind frequency in Changchun area is mainly southwest wind,followed by westerly wind,south wind and north wind,accounting for 80%of the total wind frequency.Piggery living area will not be affected by harmful gases in production area when southwest wind,westerly wind and south wind flow,but seriously affected by harmful gases when northerly wind flows,so it is recommended to set up prevention measures.According to the 7-point evaluation method of odor intensity,the minimum odor protection distance around the pig farm is 300 m.It is necessary to set up protective barriers between living areas and production areas.Otherwise,in the case of northerly inflow,the contamination area around the site will exceed 300 m.
作者
解晨辉
宋阳
贾乐心
刘碧莹
袁月明
周丽娜
XIE Chenhui;SONG Yang;JIA Lexin;LIU Biying;YUAN Yueming;ZHOU Li'na(College of Engineering and Technology,Jilin Agricultural University,Changchun 130118,China)
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2022年第4期488-494,共7页
Journal of Jilin Agricultural University
基金
广东省重点领域研发计划项目(2019B020215002-5)
关键词
猪场
有害气体
恶臭强度
防护距离
piggery
harmful gas
odor intensity
protective distance
