成都市施工扬尘排放特征研究

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Abstract Based on dust emission monitoring data from 112 construction sites including various types of buildings and municipal engineering sites in Chengdu with Dust TRAK TM aerosol (dust) monitor, the emission characteristics of different construction sites and their downwind dust concentration trend were studied. Additionally, the CALPUFF software was used to simulate the diffusion characteristics of one construction site in Xindu District of Chengdu. The results showed that the dust emission concentration ranged between 0.13 and 2.91mg/m³ in Chengdu. The average dust concentration at house construction sites was 0.94mg/m³, which was higher than that at municipal construction sites. The dust concentration at medium and small construction sites was higher than the average concentration of 0.61mg/m³ at large construction sites. The average dust concentration at earthwork construction phase was about 1.21mg/m³, which was much higher than those at the foundation construction, main construction, and decoration phases. The dust emission concentration showed a periodic alternation between high and low in Chengdu. The maximum difference between high and low concentration at the earthwork construction phase reached 0.6mg/m³. The dust concentration increased in the 5 to 15m downwind area of the plant boundary, and then decreased to a stable level (0.1~0.2mg/m³) at the distance around 50m. The CALPUFF model showed the capacity to simulate the diffusion trend of construction dust in Chengdu from the macro perspective, however it was still a challenge to capture the detailed diffusion characteristics of construction dust in the downwind direction.

Key words： construction dust emission characteristics downwind direction CALPUFF

Received: 09 February 2020

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X513

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	Articles by authors
	FAN Wu-bo
	CHEN Jun-hui
	TANG Bin-yan
	FENG Xiao-qiong
	SUN Hai-long
	ZHANG Yi
	WANG Jie
	JIN Chen-yang
	LUO li-hong
	JIANG Tao
	WU Kai
	SUN Shu
	JIANG Tao
	QIAN Jun
	LIU Zheng

Cite this article:

FAN Wu-bo,CHEN Jun-hui,TANG Bin-yan等. Dust emission characteristics of construction activities in Chengdu[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(9): 3767-3775.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I9/3767

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