南王水庫(kù)引水工程水體污染物運(yùn)移規(guī)律及突發(fā)事故應(yīng)急響應(yīng)分析
發(fā)布時(shí)間：2019-06-21 06:25
【摘要】：為了研究輸水渠道中水體污染物的運(yùn)移規(guī)律,并對(duì)沿線突發(fā)水污染事故進(jìn)行有效預(yù)警與應(yīng)急處置,本文以南王水庫(kù)引水工程高唐段為研究對(duì)象,采用公式法計(jì)算了研究對(duì)象在不同工況下的水環(huán)境容量,利用數(shù)值模擬的方法對(duì)不同工況下水體污染物的運(yùn)移衰減過程、突發(fā)水污染事故的預(yù)警及應(yīng)急進(jìn)行了研究與分析,具體研究?jī)?nèi)容與結(jié)論如下:對(duì)一維水環(huán)境容量計(jì)算模型中排污口的不同概化方法進(jìn)行了分析,并在此基礎(chǔ)上推導(dǎo)出了多點(diǎn)概化水環(huán)境容量計(jì)算模型。根據(jù)南王水庫(kù)引水工程高唐段沿線污染源的實(shí)際分布狀況,采用不同水環(huán)境容量計(jì)算模型分別計(jì)算了豐水、平水、枯水三種工況(以下簡(jiǎn)稱不同水期)下輸水干渠的水環(huán)境容量。計(jì)算結(jié)果表明利用三點(diǎn)概化水環(huán)境容量計(jì)算模型得到的水環(huán)境容量要小于頂點(diǎn)概化水環(huán)境容量計(jì)算模型而大于中點(diǎn)概化水環(huán)境容量計(jì)算模型,此外,還可以看出輸水干渠在不同水期條件下的水環(huán)境容量差異較大,有必要根據(jù)輸水工況合理確定其水環(huán)境容量。將非恒定流水動(dòng)力學(xué)方程與一維對(duì)流擴(kuò)散水質(zhì)方程進(jìn)行耦合,利用耦合數(shù)學(xué)模型模擬了正常排污條件下典型水體污染物在不同水期條件下的運(yùn)移降解過程,從模擬結(jié)果可以看出,在不同水期條件下,同一斷面的污染物濃度值相差較大,污染物濃度線從渠首至渠尾呈鋸齒狀間歇性上升,其中,沿程有三處上漲幅度較大,符合實(shí)際排污情況,干渠水體滿足地表水IV類水質(zhì)標(biāo)準(zhǔn)。分析確定干渠沿線突發(fā)性水污染事故的易發(fā)地,構(gòu)建不同突發(fā)性水污染事故,利用耦合水質(zhì)模型模擬了不同水期條件下特征污染帶的運(yùn)移衰減過程,模擬結(jié)果表明,事故發(fā)生后,污染帶的濃度變化大致呈對(duì)稱拋物線狀,由上游尖瘦型逐漸過渡到下游的矮胖型,濃度峰值也會(huì)逐漸削減。對(duì)于同一控制斷面而言,在不同水期條件下,污染物對(duì)斷面的影響時(shí)間、水體污染物濃度超過目標(biāo)水質(zhì)標(biāo)準(zhǔn)的時(shí)間段(以下簡(jiǎn)稱不可取水時(shí)間)差別很大,而從事故發(fā)生至水體污染物濃度升至目標(biāo)水質(zhì)標(biāo)準(zhǔn)的這段時(shí)間(以下簡(jiǎn)稱預(yù)警時(shí)間)受水期的影響不是很顯著。對(duì)于同一水期而言,不同斷面的預(yù)警時(shí)間、不可取水時(shí)間有所不同,距離事故點(diǎn)較近的下游斷面的預(yù)警時(shí)間比距離事故點(diǎn)較遠(yuǎn)的下游斷面要短,前者在豐水期時(shí)的不可取水時(shí)間要比后者長(zhǎng),但隨著豐水期向枯水期過渡,后者的不可取水時(shí)間會(huì)超過前者。對(duì)構(gòu)建的兩起突發(fā)水污染事故進(jìn)行應(yīng)急處置分析,采用多種應(yīng)急措施聯(lián)用的方法對(duì)事故一進(jìn)行應(yīng)急處理,采用引水沖污措施對(duì)事故二進(jìn)行應(yīng)急處理,并利用構(gòu)建的水質(zhì)模型對(duì)后者的應(yīng)急效果進(jìn)行了模擬,在確定合理的引水點(diǎn)、引水時(shí)間之后,引水入渠能夠使干渠內(nèi)的污染帶濃度得到有效的削減,并且隨著引水流量的加大,渠尾的污染帶濃度基本可以滿足在地表水V類水質(zhì)標(biāo)準(zhǔn)值以下。
[Abstract]:In order to study the transport law of water pollutants in the water transmission channel, and to effectively warn and deal with the sudden water pollution accidents along the route, this paper takes the Gaotang section of Nanwang Reservoir diversion Project as the research object, calculates the water environment capacity of the research object under different working conditions by means of formula method, and uses the numerical simulation method to calculate the transport and attenuation process of water pollutants under different working conditions. The early warning and emergency of sudden water pollution accident are studied and analyzed. The concrete research contents and conclusions are as follows: the different generalization methods of sewage outlet in one-dimensional water environmental capacity calculation model are analyzed, and on this basis, a multi-point generalized water environmental capacity calculation model is derived. According to the actual distribution of pollution sources along Gaotang section of Nanwang Reservoir diversion Project, the water environmental capacity of main canal under three working conditions of abundant water, flat water and dry water (hereinafter referred to as different water periods) is calculated by using different water environmental capacity calculation models. The calculation results show that the water environment capacity obtained by using the three-point generalized water environment capacity calculation model is smaller than that of the Vertex generalized water environment capacity calculation model, but larger than that of the midpoint generalized water environment capacity calculation model. In addition, it can be seen that the water environment capacity of the main canal under different water conditions is quite different, so it is necessary to reasonably determine its water environment capacity according to the water transportation conditions. The transient flow dynamics equation is coupled with the one-dimensional convective diffusion water quality equation, and the coupling mathematical model is used to simulate the transport and degradation process of typical water pollutants under different water periods. It can be seen from the simulation results that the pollutant concentration values of the same section vary greatly under different water periods, and the pollutant concentration lines rise in a serrated and intermittent manner from the beginning of the canal to the end of the canal. Along the way, there are three areas of rising range, which accords with the actual discharge situation, and the main canal water body meets the IV water quality standard of surface water. The prone places of sudden water pollution accidents along the main canal are analyzed and determined, and different sudden water pollution accidents are constructed. The transport and attenuation process of the characteristic pollution zone under different water periods is simulated by using the coupled water quality model. The simulation results show that the concentration change of the pollution zone is approximately symmetrical parabola after the accident, and the concentration peak value will be gradually reduced from the upstream sharp thin type to the low fat type downstream. For the same control section, the influence time of pollutants on the section is very different under different water periods, and the time when the concentration of water pollutants exceeds the target water quality standard (hereinafter referred to as the non-fetching time) is very different, but the time from the occurrence of the accident to the increase of the concentration of water pollutants to the target water quality standard (hereinafter referred to as the early warning time) is not significantly affected by the water period. For the same water period, the warning time of different sections is different, and the warning time of the downstream section closer to the accident point is shorter than that of the downstream section far from the accident point. The non-fetching time of the former is longer than that of the latter during the high water period, but with the transition from the high water period to the low water period, the non-fetching time of the latter will exceed the former. The emergency treatment of two sudden water pollution accidents is carried out, and the emergency treatment of accident one is carried out by using various emergency measures, and the emergency treatment of accident 2 is carried out by using water diversion measures, and the emergency effect of the latter is simulated by using the constructed water quality model. After determining the reasonable water diversion point and diversion time, the concentration of pollution zone in the main canal can be effectively reduced. With the increase of diversion flow, the concentration of pollution zone at the end of the canal can basically meet the standard value of Class V water quality of surface water.
【學(xué)位授予單位】：濟(jì)南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TV67;X52
本文編號(hào)：2503860
[Abstract]:In order to study the transport law of water pollutants in the water transmission channel, and to effectively warn and deal with the sudden water pollution accidents along the route, this paper takes the Gaotang section of Nanwang Reservoir diversion Project as the research object, calculates the water environment capacity of the research object under different working conditions by means of formula method, and uses the numerical simulation method to calculate the transport and attenuation process of water pollutants under different working conditions. The early warning and emergency of sudden water pollution accident are studied and analyzed. The concrete research contents and conclusions are as follows: the different generalization methods of sewage outlet in one-dimensional water environmental capacity calculation model are analyzed, and on this basis, a multi-point generalized water environmental capacity calculation model is derived. According to the actual distribution of pollution sources along Gaotang section of Nanwang Reservoir diversion Project, the water environmental capacity of main canal under three working conditions of abundant water, flat water and dry water (hereinafter referred to as different water periods) is calculated by using different water environmental capacity calculation models. The calculation results show that the water environment capacity obtained by using the three-point generalized water environment capacity calculation model is smaller than that of the Vertex generalized water environment capacity calculation model, but larger than that of the midpoint generalized water environment capacity calculation model. In addition, it can be seen that the water environment capacity of the main canal under different water conditions is quite different, so it is necessary to reasonably determine its water environment capacity according to the water transportation conditions. The transient flow dynamics equation is coupled with the one-dimensional convective diffusion water quality equation, and the coupling mathematical model is used to simulate the transport and degradation process of typical water pollutants under different water periods. It can be seen from the simulation results that the pollutant concentration values of the same section vary greatly under different water periods, and the pollutant concentration lines rise in a serrated and intermittent manner from the beginning of the canal to the end of the canal. Along the way, there are three areas of rising range, which accords with the actual discharge situation, and the main canal water body meets the IV water quality standard of surface water. The prone places of sudden water pollution accidents along the main canal are analyzed and determined, and different sudden water pollution accidents are constructed. The transport and attenuation process of the characteristic pollution zone under different water periods is simulated by using the coupled water quality model. The simulation results show that the concentration change of the pollution zone is approximately symmetrical parabola after the accident, and the concentration peak value will be gradually reduced from the upstream sharp thin type to the low fat type downstream. For the same control section, the influence time of pollutants on the section is very different under different water periods, and the time when the concentration of water pollutants exceeds the target water quality standard (hereinafter referred to as the non-fetching time) is very different, but the time from the occurrence of the accident to the increase of the concentration of water pollutants to the target water quality standard (hereinafter referred to as the early warning time) is not significantly affected by the water period. For the same water period, the warning time of different sections is different, and the warning time of the downstream section closer to the accident point is shorter than that of the downstream section far from the accident point. The non-fetching time of the former is longer than that of the latter during the high water period, but with the transition from the high water period to the low water period, the non-fetching time of the latter will exceed the former. The emergency treatment of two sudden water pollution accidents is carried out, and the emergency treatment of accident one is carried out by using various emergency measures, and the emergency treatment of accident 2 is carried out by using water diversion measures, and the emergency effect of the latter is simulated by using the constructed water quality model. After determining the reasonable water diversion point and diversion time, the concentration of pollution zone in the main canal can be effectively reduced. With the increase of diversion flow, the concentration of pollution zone at the end of the canal can basically meet the standard value of Class V water quality of surface water.
【學(xué)位授予單位】：濟(jì)南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TV67;X52
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 張小娜;馮杰;張東輝;劉寧寧;;坡面流格子Boltzmann方法與Preissmann隱式差分法模擬[J];農(nóng)業(yè)機(jī)械學(xué)報(bào);2014年10期
2 董飛;劉曉波;彭文啟;吳文強(qiáng);;地表水水環(huán)境容量計(jì)算方法回顧與展望[J];水科學(xué)進(jìn)展;2014年03期
3 周剛;雷坤;富國(guó);毛光君;;河流水環(huán)境容量計(jì)算方法研究[J];水利學(xué)報(bào);2014年02期
4 練繼建;王旭;劉嬋玉;馬超;;長(zhǎng)距離明渠輸水工程突發(fā)水污染事件的應(yīng)急調(diào)控[J];天津大學(xué)學(xué)報(bào);2013年01期
5 韓瑾;李星;楊艷玲;巢猛;李圭白;;飲用水源突發(fā)鎘污染的應(yīng)急處理技術(shù)研究[J];中國(guó)給水排水;2012年21期
6 武國(guó)正;徐宗學(xué);;核電站低放射性廢水在封閉水體中的輸移規(guī)律研究[J];環(huán)境科學(xué);2012年07期
7 李林子;錢瑜;張玉超;;基于EFDC和WASP模型的突發(fā)水污染事故影響的預(yù)測(cè)預(yù)警[J];長(zhǎng)江流域資源與環(huán)境;2011年08期
8 陳芳艷;王春玲;王新剛;唐玉斌;呂錫武;張東;;飲用水源地突發(fā)苯酚污染的應(yīng)急處理中試研究[J];水處理技術(shù);2011年08期
9 饒清華;曾雨;張江山;許麗忠;李小斌;;閩江下游突發(fā)性水污染事故時(shí)空模擬[J];環(huán)境科學(xué)學(xué)報(bào);2011年03期
10 李紅亮;王樹峰;;不同設(shè)計(jì)水文條件下河北省水功能區(qū)納污能力研究[J];南水北調(diào)與水利科技;2010年03期
，本文編號(hào)：2503860
本文鏈接：http://sikaile.net/kejilunwen/shuiwenshuili/2503860.html
最近更新
教材專著
