基于ASM3的污水處理CASS工藝模型建立與參數優(yōu)化研究
發(fā)布時間：2018-08-31 17:59
【摘要】：隨著我國對環(huán)境保護問題越來越重視,環(huán)�；A設施的建設投資力度不斷加大,污水廠的普及率顯著提高。但這些水廠大多分散管理,缺少科學的運行診斷系統(tǒng),遇到水質沖擊也沒有必要的實時監(jiān)測和分析技術。哈爾濱松花江流域的水廠就面臨著隨時可能提高水質標準、缺少集群管理的軟件平臺、隨著生活方式轉變而導致的低C/N等問題。所以本文針對以上問題,基于ASM3模型建立了一個針對CASS工藝的能夠準確快速預測和分析污染物削減量的擴展E-ASM3數學模型。然后借助此模型和正交試驗法結合能耗分析共同確定CASS工藝處理低C/N廢水的污染物最優(yōu)削減工況點。本文基于ASM3模型,引入SMP、EPS的概念,加入新組分SSMP(包含SUAP和SBAP)、XEPS,新反應過程SSMP的貯存等;動力學表達式依照“同時貯存與生長”理論引入參數f STO來控制基質用于貯存的比例,引入開關函數+來反映基質何時進入匱乏期;針對CASS工藝建立了兩段式的物料守恒。建立擴展E-ASM3模型,并借助MATLAB/Simulink模塊化工具搭建了可視化模擬程序。建立的模型經過靈敏度分析,針對出水水質影響較大的參數YSTO.O、b H.O、YSTO.H.O、b A.O、μA、YA、k BAP.O、k H.EPS、f EPS.STO進行了調整,使其靜態(tài)模擬實驗室小試裝置出水平均誤差為0.57%。在考慮了溫度修正后,對水廠實測出水COD、NH3-N和TN進行穩(wěn)態(tài)模擬,結果平均誤差分別為7.4%、29.05%和11.02%,除去部分離散值,模擬值基本趨勢符合水廠實測值。通過模型模擬四個工藝參數對CASS工藝在處理低C/N廢水時的影響。結果顯示,COD和氨氮的去除率都隨充水比的增加有所降低,曝氣時間在大于等于3h后對出水影響不大,污泥回流比對氨氮去除率影響較大,出水SMP濃度規(guī)律與COD相關,而EPS則與SMP相反。正交試驗極差分析結果顯示充水比對于不同C/N廢水和不同出水指標λ=0.25都是最優(yōu)條件;曝氣時間從經濟角度考慮3 h(空1)出水仍可效果良好;回流比和反應區(qū)比例對于COD的去除率分別選擇50%和5:30為最優(yōu),而對于其他出水指標100%和7:28為最優(yōu)。結合能耗分析和模擬規(guī)律最終確定綜合最優(yōu)點為充水比0.25、曝氣時間3 h(空1)、污泥回流比為75%、反應區(qū)比例為1:7:28,并提出針對性的優(yōu)化建議。
[Abstract]:With more and more attention paid to environmental protection in our country, the investment of environmental protection infrastructure is increasing, and the popularization rate of wastewater treatment plants has increased significantly. However, most of these water plants are decentralized management, lack of scientific operating diagnosis system, and there is no necessary real-time monitoring and analysis technology in the water quality impact. Harbin Songhua River Waterworks is faced with problems such as improving water quality standards at any time lack of software platform for cluster management and low C / N caused by lifestyle changes. Therefore, based on the ASM3 model, an extended E-ASM3 mathematical model for accurate and fast prediction and analysis of pollutant reduction in CASS process is established in this paper. Based on the model and orthogonal test combined with energy consumption analysis, the optimal reduction point of pollutants in CASS process for treatment of low C / N wastewater was determined. Based on the ASM3 model, the concept of SMP,EPS is introduced, a new component of SSMP (including SUAP and SBAP) is added, the storage of SSMP in the new reaction process, and so on, the kinetic expression introduces the parameter f STO according to the theory of "simultaneous storage and growth" to control the proportion of matrix used for storage. The switching function is introduced to reflect when the matrix enters the shortage period, and the two-stage material conservation is established for the CASS process. The extended E-ASM3 model is established, and the visual simulation program is built with the help of MATLAB/Simulink modularization tool. Through sensitivity analysis, the model was adjusted to the parameters YSTO.O,b H.OOYSTO.H.OBA.O, 渭 Aneyak BAP.O,k H.EPSF EPS.STO, and the average effluent error of the static simulation laboratory test unit was 0.57. After considering the temperature correction, the steady state simulation of COD,NH3-N and TN is carried out. The average error is 7.4% 29.05% and 11.02%, respectively. The basic trend of simulation value accords with the measured value of water plant. The effects of four process parameters on the treatment of low C / N wastewater by CASS process were simulated by the model. The results showed that the removal rates of COD and NH3-N decreased with the increase of water filling ratio. After aeration time was greater than or equal to 3 h, the removal rate of NH3-N was not affected, and the ratio of sludge reflux had a great effect on the removal rate of NH3-N. The SMP concentration of effluent was related to COD. EPS is the opposite of SMP. The results of orthogonal test showed that the filling ratio was the best condition for different C / N wastewater and different effluent index 位 ~ (0.25), and the aeration time was good when considering 3 h (empty 1) effluent from an economic point of view. The optimal removal rate of COD was 50% and 5:30 for reflux ratio and reaction zone ratio, and 100% and 7:28 for other effluent indexes respectively. Combined with the energy consumption analysis and simulation law, it was finally determined that the comprehensive advantages were water filling ratio of 0.25, aeration time of 3 h (empty 1), sludge reflux ratio of 75 and reaction zone ratio of 1: 7: 28, and put forward some suggestions for optimization.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X703
本文編號：2215739
[Abstract]:With more and more attention paid to environmental protection in our country, the investment of environmental protection infrastructure is increasing, and the popularization rate of wastewater treatment plants has increased significantly. However, most of these water plants are decentralized management, lack of scientific operating diagnosis system, and there is no necessary real-time monitoring and analysis technology in the water quality impact. Harbin Songhua River Waterworks is faced with problems such as improving water quality standards at any time lack of software platform for cluster management and low C / N caused by lifestyle changes. Therefore, based on the ASM3 model, an extended E-ASM3 mathematical model for accurate and fast prediction and analysis of pollutant reduction in CASS process is established in this paper. Based on the model and orthogonal test combined with energy consumption analysis, the optimal reduction point of pollutants in CASS process for treatment of low C / N wastewater was determined. Based on the ASM3 model, the concept of SMP,EPS is introduced, a new component of SSMP (including SUAP and SBAP) is added, the storage of SSMP in the new reaction process, and so on, the kinetic expression introduces the parameter f STO according to the theory of "simultaneous storage and growth" to control the proportion of matrix used for storage. The switching function is introduced to reflect when the matrix enters the shortage period, and the two-stage material conservation is established for the CASS process. The extended E-ASM3 model is established, and the visual simulation program is built with the help of MATLAB/Simulink modularization tool. Through sensitivity analysis, the model was adjusted to the parameters YSTO.O,b H.OOYSTO.H.OBA.O, 渭 Aneyak BAP.O,k H.EPSF EPS.STO, and the average effluent error of the static simulation laboratory test unit was 0.57. After considering the temperature correction, the steady state simulation of COD,NH3-N and TN is carried out. The average error is 7.4% 29.05% and 11.02%, respectively. The basic trend of simulation value accords with the measured value of water plant. The effects of four process parameters on the treatment of low C / N wastewater by CASS process were simulated by the model. The results showed that the removal rates of COD and NH3-N decreased with the increase of water filling ratio. After aeration time was greater than or equal to 3 h, the removal rate of NH3-N was not affected, and the ratio of sludge reflux had a great effect on the removal rate of NH3-N. The SMP concentration of effluent was related to COD. EPS is the opposite of SMP. The results of orthogonal test showed that the filling ratio was the best condition for different C / N wastewater and different effluent index 位 ~ (0.25), and the aeration time was good when considering 3 h (empty 1) effluent from an economic point of view. The optimal removal rate of COD was 50% and 5:30 for reflux ratio and reaction zone ratio, and 100% and 7:28 for other effluent indexes respectively. Combined with the energy consumption analysis and simulation law, it was finally determined that the comprehensive advantages were water filling ratio of 0.25, aeration time of 3 h (empty 1), sludge reflux ratio of 75 and reaction zone ratio of 1: 7: 28, and put forward some suggestions for optimization.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X703
【參考文獻】
相關期刊論文 前6條
1 姚重華,劉勇弟;活性污泥過程數學模型進展[J];環(huán)境化學;2002年06期
2 宋桂杰;張韻;;CASS工藝中曝氣系統(tǒng)節(jié)能技術探討[J];給水排水;2009年S1期
3 魏永,閃紅光;循環(huán)式活性污泥法(CASS)的研究進展[J];遼寧城鄉(xiāng)環(huán)境科技;2004年04期
4 董濱;段妮娜;何群彪;;不同泥齡下溶解性微生物產物對膜污染的影響[J];同濟大學學報(自然科學版);2010年03期
5 方衛(wèi);許玫英;岑英華;李云路;孫國萍;;廢水處理中的可溶性微生物產物[J];微生物學通報;2006年06期
6 王建平;程聲通;;軟計算技術在環(huán)境復雜模型參數識別中的應用研究[J];系統(tǒng)工程理論與實踐;2006年02期
相關碩士學位論文 前3條
1 鄭飛;CASS工藝在寒冷地區(qū)城市污水處理中的優(yōu)化運行研究[D];哈爾濱工業(yè)大學;2011年
2 張英慧;SBR短程硝化反硝化處理模擬高氨氮廢水的試驗研究[D];長安大學;2008年
3 張晨;低碳源城鎮(zhèn)污水處理廠CAST工藝改造與調控[D];哈爾濱工業(yè)大學;2014年
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