【摘要】：近年來,環(huán)境空氣質(zhì)量問題越來越受到人們的關(guān)注,空氣中懸浮顆粒物嚴(yán)重影響空氣的質(zhì)量,空氣中懸浮顆粒物主要來源于城市建筑工地?fù)P塵以及工業(yè)堆料場揚(yáng)塵。揚(yáng)塵中PM_(10)具有廣泛的來源、無組織的排放及難以防治的特點(diǎn),PM_(10)攜帶大量的有毒金屬離子與感染性病毒,影響著人們的身體健康,PM_(10)的監(jiān)測與防治尤為重要。本文針對天津市城市建筑工地與堆料場揚(yáng)塵污染做了研究,主要研究結(jié)論如以下三個(gè)方面:1、本文對建筑工地的4個(gè)建設(shè)階段和3個(gè)不同規(guī)模堆料場進(jìn)行了揚(yáng)塵監(jiān)測,以重量法分析建筑工地及堆料場揚(yáng)塵顆粒物的濃度。分析結(jié)果中最高和最低PM_(10)濃度為4460.5μg/m3、108.2μg/m3,是國家二級標(biāo)準(zhǔn)(150μg/m3)濃度限值的29.7倍、0.7倍。以電感耦合等離子體-質(zhì)譜法對揚(yáng)塵樣品,進(jìn)行19種無機(jī)金屬及其化合物的定量分析,分析結(jié)果中有鉻、砷、鎘及其化合物超出環(huán)境空氣標(biāo)準(zhǔn)污染物濃度限值。2、本文利用光散射法對城市建筑工地與堆料場進(jìn)行全方位的監(jiān)測,監(jiān)測數(shù)據(jù)表明:大部分區(qū)域環(huán)境空氣質(zhì)量等級為良(AQI100),局部出現(xiàn)輕度污染。利用經(jīng)驗(yàn)公式對PM_(10)排放因子進(jìn)行了校正。3、本文按建筑工地及堆料場規(guī)模建立符合實(shí)際的虛擬坐標(biāo),結(jié)合區(qū)域規(guī)模、風(fēng)速與PM_(10)排放強(qiáng)度條件,納入FDM模型進(jìn)行模擬。模擬結(jié)果表明:影響建筑工地與堆料場PM_(10)排放因素的順序依次為排放強(qiáng)度、風(fēng)速、區(qū)域規(guī)模,排放強(qiáng)度越大、風(fēng)速越強(qiáng)、規(guī)模越小,則PM_(10)擴(kuò)散速率越大。
[Abstract]:In recent years, people pay more and more attention to the problem of ambient air quality. Suspended particulates in the air seriously affect the air quality. The suspended particulates in the air mainly come from dust from urban construction sites and industrial stacks. PM_ _ (10) in dust has a wide range of sources. The characteristics of unorganized discharge and difficult to prevent and cure are that PM10 carries a large number of toxic metal ions and infectious viruses. It is particularly important to monitor and control PM10 which affects people's health. In this paper, the dust pollution of urban construction sites and stacks in Tianjin is studied. The main conclusions are as follows: 1. The dust-raising monitoring is carried out on four construction stages and three different scale stacks in the construction site. The concentration of dust particles in construction sites and stacks was analyzed by gravimetric method. The highest and lowest PM_ _ (10) concentrations were 4460.5 渭 g/m3108.2 渭 g / m ~ (3), which was 29.7 times higher than that of the national second class standard (150 渭 g/m3). Inductively coupled plasma-mass spectrometry (ICP-MS) was used to analyze 19 inorganic metals and their compounds. Cadmium and its compounds exceed the concentration limit of ambient air pollutants. In this paper, the light scattering method is used to monitor urban construction sites and stacks. The monitoring data showed that the ambient air quality in most areas was good (AQI100), and the local air quality was slightly polluted. The emendation factor of PM_ (10) is corrected by empirical formula. According to the scale of construction site and stack yard, the virtual coordinate is set up according to the scale of construction site and stack yard. Combining with the regional scale, the condition of wind speed and PM_ (10) emission intensity, the simulation is carried out with FDM model. The simulation results show that the order of PM_ (10) emission factors in construction site and stack yard is emission intensity, wind speed, regional scale, the larger the emission intensity, the stronger the wind speed and the smaller the scale, the greater the diffusion rate of PM_ (10) is.
【學(xué)位授予單位】：天津理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X799.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前4條

1 劉建業(yè);;長形封閉料場堆料卸料車特點(diǎn)及無線控制技術(shù)應(yīng)用[J];鋼鐵技術(shù);2011年02期

2 楊春艷,馬祥斌,徐景輝,曹久勇;透明板材生產(chǎn)線堆料部分的PLC控制[J];煤炭技術(shù);2000年03期

3 柯家耀;;蘑菇堆料過程的生物轉(zhuǎn)化及條件控制[J];福建輕紡;2006年03期

4 ;[J];;年期

相關(guān)會議論文 前2條

1 柏森;;基于VRS的堆料體積測量方法研究[A];中國測繪學(xué)會九屆三次理事會暨2007年“信息化測繪論壇”學(xué)術(shù)年會論文集[C];2007年

2 柯家耀;;蘑菇堆料過程的生物轉(zhuǎn)化及條件控制[A];全國第6屆食用菌學(xué)術(shù)研討會論文集[C];2001年

相關(guān)重要報(bào)紙文章 前1條

1 郭文生;中大型堆料場揚(yáng)塵怎么控制?[N];中國環(huán)境報(bào);2008年

相關(guān)碩士學(xué)位論文 前2條

1 王來福;天津市城市建筑工地與工業(yè)堆料場揚(yáng)塵污染研究[D];天津理工大學(xué);2017年

2 劉光鳳;公路工程項(xiàng)目施工現(xiàn)場堆料場規(guī)模與選址研究[D];重慶交通大學(xué);2012年

，

本文編號：2236894