滇池流域典型城鎮(zhèn)雨水徑流特征及截流方法研究
發(fā)布時間：2018-09-19 10:08
【摘要】：為了開發(fā)高效截流設(shè)備，對初期雨水進(jìn)行高效截流，在呈貢區(qū)選擇了5個典型監(jiān)測點位進(jìn)行滇池流域典型城鎮(zhèn)管內(nèi)的暴雨徑流特征研究。通過對城中村明渠、老城小區(qū)合流制支管、新城小區(qū)分流制管道等代表三種不同典型下墊面的三種不同排水管道以及老城區(qū)主管道進(jìn)行水質(zhì)水量規(guī)律分析發(fā)現(xiàn)，呈貢地區(qū)CODCr、SS、NH3-N、TN和TP的平均濃度分別為197mg/L、116mg/L、21.7mg/L、26.9mg/L和3.08mg/L。雨季SS濃度會顯著增高。不同類型管道的污染物濃度差別較大，即使是同一污水管，不同降雨場次形成的污染物濃度差異也較大，波動范圍較廣。從負(fù)荷變化的角度來說，COD負(fù)荷和SS負(fù)荷變化同步，TN負(fù)荷和NH3-N負(fù)荷變化同步。隨著降雨事件的不同，同一點位之間的負(fù)荷可能存在數(shù)量級上的差距。明渠和分流制管道出現(xiàn)的初期沖刷效應(yīng)比較明顯。為了探究濁度和電導(dǎo)率作為高效截流設(shè)備控制指標(biāo)的可能性，進(jìn)行了指標(biāo)之間的相關(guān)性分析，分析發(fā)現(xiàn)營養(yǎng)鹽指標(biāo)之間的相關(guān)性較好，CODCr與SS或CODCr與營養(yǎng)鹽指標(biāo)之間的相關(guān)性取決于其形態(tài)。強(qiáng)降雨時，CODCr和SS的相關(guān)性變高。電導(dǎo)率和營養(yǎng)鹽指標(biāo)高度顯著相關(guān)。所有監(jiān)測點的電導(dǎo)率和氨氮的相關(guān)性均在0.8以上，和TN的相關(guān)性均在0.7以上。濁度和SS呈中度或高度顯著相關(guān)，在大降雨徑流場次下尤為明顯。在相關(guān)性分析的基礎(chǔ)上，建立了快速指標(biāo)與傳統(tǒng)指標(biāo)之間的回歸方程。電導(dǎo)率和氨氮、TN及TP的回歸方程的擬合度較好，濁度和SS的回歸方程的擬合度較好。昆明主城區(qū)的電導(dǎo)率是氨氮的約15.7倍，TN的約12倍；呈貢區(qū)的電導(dǎo)率是氨氮的13.3倍，TN的11.5倍。用濁度指示SS時，昆明主城區(qū)的濁度是SS的約0.7倍，呈貢區(qū)的濁度是SS的約0.6倍。由于截流營養(yǎng)鹽減緩滇池富營養(yǎng)化是高效截流設(shè)備的主要任務(wù)之一，選擇TN和流量作為為高效截流設(shè)備的控制指標(biāo)，進(jìn)行了截流效率和截流負(fù)荷的計算，并對兩種截流方式進(jìn)行了對比。分析發(fā)現(xiàn)：在城中村明渠，以流量為指標(biāo)截流時，至少要截流20%的總流量，截流的總負(fù)荷才大于20%。當(dāng)截流50%的總流量時，截流的有機(jī)物負(fù)荷和氮磷元素在60%~77%之間。在新區(qū)分流制管道，截流50%的總流量時，，CODCr、SS、NH3-N、TN和TP截流到的負(fù)荷百分比分別是69%、70%、28%、63%和53%等。以TN為控制指標(biāo)和以流量為控制指標(biāo)的截流效率取決于兩者的過程變化。在分流制管道8-2場次，由于TN濃度過程線先降至約3.3mg/L穩(wěn)定，后小幅上升后下降，所以，兩種截流方式并無明顯差異。在城中村明渠，由于TN濃度過程線是先上升后下降或存在多次上升下降，明渠當(dāng)截流流量在40%以下，以TN為高效截流設(shè)備的控制指標(biāo)的截流效率要高于以流量為高效截流設(shè)備的控制指標(biāo)。超過40%的截流流量，二者的截流效率和截流負(fù)荷相等。
[Abstract]:In order to develop high efficient closure equipment, Rain Water was selected at five typical monitoring points to study the characteristics of rainstorm runoff in typical towns of Dianchi Lake basin. Based on the analysis of the water quality and water quantity of three different drainage pipes representing three typical underlying surfaces, the open channel in the village in the city, the confluence branch pipe in the old town district and the diverging pipe in the Xincheng district, it is found that the water quality and quantity of the main pipe in the old urban area are regular. The average concentrations of CODCr,SS,NH3-N,TN and TP in Chenggong region were 197 mg / L, 116 mg / L, 21.7 mg / L, 26.9 mg / L and 3.08 mg / L, respectively. In rainy season, SS concentration will increase significantly. The concentration of pollutants varies greatly in different types of pipelines, even in the same sewage pipe, the concentration of pollutants formed by different rainfall occasions is also quite different, and the range of fluctuation is relatively wide. From the point of view of load change, SS load and SS load change synchronously, TN load and NH3-N load change synchronously. With different rainfall events, there may be an order of magnitude difference between loads at the same point. The initial scour effect of open channel and distributary pipeline is obvious. In order to explore the possibility that turbidity and conductivity can be used as control indexes of high efficiency interceptor, the correlation analysis between the indicators is carried out. It was found that the correlation between the nutrient index and the SS or CODCr was better than that between the nutrient index and the CODCr, or the correlation between the CODCr and the nutrient index depended on their morphology. The correlation between CODCr and SS increased during heavy rainfall. The electrical conductivity was highly correlated with the nutrient index. The correlation between electrical conductivity and ammonia nitrogen and TN was more than 0. 8 and 0. 7 respectively. Turbidity was significantly correlated with SS, especially under heavy rainfall runoff. On the basis of correlation analysis, the regression equation between fast index and traditional index is established. The regression equations of conductivity and ammonia nitrogen TN and TP were better than turbidity and SS regression equations. The electrical conductivity of Kunming main urban area is about 15.7 times of ammonia nitrogen and 11.5 times of that of nitrogen in Chenggong area. When SS is indicated by turbidity, the turbidity of main urban area of Kunming is about 0.7 times that of SS, and the turbidity of Chenggong district is about 0.6 times that of SS. It is one of the main tasks of high efficiency closure equipment to slow down eutrophication of Dianchi Lake by intercepting nutrient salt. TN and flow rate are selected as the control index of high efficiency closure equipment, and the intercepting efficiency and load are calculated. The two closure modes are compared. It is found that in the open channel of the village in the city, when the flow rate is taken as the index, the total flow rate should be at least 20%, and the total load of the closure is more than 20%. When the total flow rate is 50%, the organic load and nitrogen and phosphorus elements of the intercepting flow are between 60% and 77%. When the total flow rate is 50%, the loading percentages of CODCrSS-NH3-NNN and TP are 69% and 70%, 63% and 53%, respectively. The closure efficiency with TN as control index and flow rate as control index depends on the process change of both. Because the concentration of TN decreases to about 3.3mg/L at first, then increases slightly and then decreases, there is no obvious difference between the two kinds of closure modes. In the open channel of the village in the city, because the TN concentration process line rises first and then decreases or has several ascending and descending, the open channel when the flow rate is less than 40%, The efficiency of flow closure with TN as the control index of high efficiency closure equipment is higher than that with flow rate as the control index of high efficiency closure equipment. More than 40% of the intercepting flow, the closure efficiency and the closure load are equal.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV121;TV213.9;TU992
本文編號：2249826
[Abstract]:In order to develop high efficient closure equipment, Rain Water was selected at five typical monitoring points to study the characteristics of rainstorm runoff in typical towns of Dianchi Lake basin. Based on the analysis of the water quality and water quantity of three different drainage pipes representing three typical underlying surfaces, the open channel in the village in the city, the confluence branch pipe in the old town district and the diverging pipe in the Xincheng district, it is found that the water quality and quantity of the main pipe in the old urban area are regular. The average concentrations of CODCr,SS,NH3-N,TN and TP in Chenggong region were 197 mg / L, 116 mg / L, 21.7 mg / L, 26.9 mg / L and 3.08 mg / L, respectively. In rainy season, SS concentration will increase significantly. The concentration of pollutants varies greatly in different types of pipelines, even in the same sewage pipe, the concentration of pollutants formed by different rainfall occasions is also quite different, and the range of fluctuation is relatively wide. From the point of view of load change, SS load and SS load change synchronously, TN load and NH3-N load change synchronously. With different rainfall events, there may be an order of magnitude difference between loads at the same point. The initial scour effect of open channel and distributary pipeline is obvious. In order to explore the possibility that turbidity and conductivity can be used as control indexes of high efficiency interceptor, the correlation analysis between the indicators is carried out. It was found that the correlation between the nutrient index and the SS or CODCr was better than that between the nutrient index and the CODCr, or the correlation between the CODCr and the nutrient index depended on their morphology. The correlation between CODCr and SS increased during heavy rainfall. The electrical conductivity was highly correlated with the nutrient index. The correlation between electrical conductivity and ammonia nitrogen and TN was more than 0. 8 and 0. 7 respectively. Turbidity was significantly correlated with SS, especially under heavy rainfall runoff. On the basis of correlation analysis, the regression equation between fast index and traditional index is established. The regression equations of conductivity and ammonia nitrogen TN and TP were better than turbidity and SS regression equations. The electrical conductivity of Kunming main urban area is about 15.7 times of ammonia nitrogen and 11.5 times of that of nitrogen in Chenggong area. When SS is indicated by turbidity, the turbidity of main urban area of Kunming is about 0.7 times that of SS, and the turbidity of Chenggong district is about 0.6 times that of SS. It is one of the main tasks of high efficiency closure equipment to slow down eutrophication of Dianchi Lake by intercepting nutrient salt. TN and flow rate are selected as the control index of high efficiency closure equipment, and the intercepting efficiency and load are calculated. The two closure modes are compared. It is found that in the open channel of the village in the city, when the flow rate is taken as the index, the total flow rate should be at least 20%, and the total load of the closure is more than 20%. When the total flow rate is 50%, the organic load and nitrogen and phosphorus elements of the intercepting flow are between 60% and 77%. When the total flow rate is 50%, the loading percentages of CODCrSS-NH3-NNN and TP are 69% and 70%, 63% and 53%, respectively. The closure efficiency with TN as control index and flow rate as control index depends on the process change of both. Because the concentration of TN decreases to about 3.3mg/L at first, then increases slightly and then decreases, there is no obvious difference between the two kinds of closure modes. In the open channel of the village in the city, because the TN concentration process line rises first and then decreases or has several ascending and descending, the open channel when the flow rate is less than 40%, The efficiency of flow closure with TN as the control index of high efficiency closure equipment is higher than that with flow rate as the control index of high efficiency closure equipment. More than 40% of the intercepting flow, the closure efficiency and the closure load are equal.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV121;TV213.9;TU992
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 張科峰;傅大放;李賀;;不同屋面雨水徑流中PAHs污染特性對比分析[J];東南大學(xué)學(xué)報(自然科學(xué)版);2012年01期
2 袁曉燕;余志敏;施衛(wèi)明;;大清河小流域城郊型面源污染現(xiàn)狀與對策研究[J];環(huán)境科學(xué)與技術(shù);2010年09期
3 田永靜;李田;何紹明;鐘愛誠;董魯燕;;蘇州市楓橋工業(yè)園區(qū)非點源污染特性研究[J];中國給水排水;2009年13期
4 張懷宇;楊逢樂;李樹苑;王海玲;陳才高;趙磊;朱建國;張小平;何飛;錢望新;;城市排水系統(tǒng)的雨季COD溢流控制示范研究[J];中國給水排水;2010年22期
5 楊飚;黃勇強(qiáng);吳濤;厲晶晶;徐明力;;鎮(zhèn)江市雨水收集利用示范工程雨水水質(zhì)特性研究[J];環(huán)境工程;2010年05期
6 莫文銳;田森林;黃建洪;楊宗慧;;百年一遇大旱后城市雨水及降雨徑流重金屬污染調(diào)查[J];環(huán)境化學(xué);2011年09期
7 荊紅衛(wèi);華蕾;陳圓圓;單文靜;時萬新;黃振芳;焦忠志;;城市雨水管網(wǎng)降雨徑流污染特征及對受納水體水質(zhì)的影響[J];環(huán)境化學(xué);2012年02期
8 李賀;李田;;上海高密度居民區(qū)合流制系統(tǒng)雨天溢流水質(zhì)研究[J];環(huán)境科學(xué);2006年08期
9 林莉峰;李田;李賀;;上海市城區(qū)非滲透性地面徑流的污染特性研究[J];環(huán)境科學(xué);2007年07期
10 歐浪波;胡丹;黃曄;崔司宇;郭天嬌;張巍;王學(xué)軍;;北京城區(qū)屋面徑流中PAHs的初期沖刷效應(yīng)[J];環(huán)境科學(xué);2011年10期
本文編號：2249826
本文鏈接：http://sikaile.net/kejilunwen/shuiwenshuili/2249826.html
最近更新
教材專著
