GUO Hongfei¹,SU Lulu¹,ZHANG Fuqiang^1,2,LIU Peng^1,3,YIN Fuxing²

(1. School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China;2. Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology,Tianjin 300130,China;3. Kalavinka (Tianjin) Environment Technology Co. Ltd.,Tianjin 301700,China)

Abstract: To control the aeolian emission from earth dust,waterborne polymeric dust suppressants were synthesized,and the effects on particles agglomeration,moisture retention and wetting ability to earth dust were investigated. The results show that acrylic acid favors polymer-dust contact angle,and increases dust Zeta potential. Such polymers facilitate fine particle aggregation,improve cohesion forces,and in arid status,distinctly enhance the soil dust stability by compacted seals. However,in moistened state,wind erodibility is effectively reduced via hindering vaporization and raising moisture-retention. At the temperature of 20 ℃,relative humidity of 45% and polymer mass dosage of 1.0%,the suppressing duration attain 2.38 times of watering,and at wind rate of 12 m/s,the estimated suppression efficiency (SE) is 86.07%. Extensive spraying 24h later on a bare earth playground,the PM2.5 and PM10 SE reach 62.96% and 71.05%,theoretical gap to field application results being diminished,and thus confirmed this feasible evaluating methodology.

Keywords: suspended particulate matter; dust suppressant; earth dust; dust emission; dust fall

中图分类号：TB496                              文献标志码：A

文章编号：1008-5548(2020)01-0035-06

DOI:10.13732/j.issn.1008-5548.2020.01.006

收稿日期： 2019-01-18，修回日期：2019-04-14，在线出版时间：2019-07-23 09:12。

基金项目：天津市科技计划项目，编号：16ZXCXSF00010；河北省科技计划项目，编号：17273703D。

第一作者简介：郭宏飞(1972—)，男，副教授，博士，研究方向为有机化工。E-mail：jlj1899@126.com。