東北地區(qū)城鎮(zhèn)污水廠處理工藝優(yōu)選模型及績效評估體系研究
發(fā)布時間：2019-04-10 14:09
【摘要】：污水處理工藝的選擇是新建污水廠設(shè)計階段最為重要的步驟之一,能否根據(jù)污水廠實際情況選擇合理適用的污水處理工藝直接決定了污水廠的各項建設(shè)投資支出、處理達(dá)標(biāo)排放情況以及運行管理難易程度等指標(biāo)。而傳統(tǒng)的污水處理廠設(shè)計階段的工藝選擇大多數(shù)依靠相關(guān)設(shè)計人員的設(shè)計經(jīng)驗和主觀選擇,并沒有一個客觀、公平的評價方法。此時就需要建立起一個適用性廣泛、結(jié)果合理可靠的一整套工藝選擇的評價方法用于處理工藝的優(yōu)選。首先本文廣泛調(diào)研了東北地區(qū)31家良好運行污水處理廠的實際監(jiān)測數(shù)據(jù),從選擇工藝、設(shè)計規(guī)模、排放指標(biāo)以及處理效果方面對北方地區(qū)污水廠的設(shè)計參數(shù)進(jìn)行統(tǒng)計分析,分析發(fā)現(xiàn)選擇工藝以A/O、CAST工藝最為常見,設(shè)計規(guī)模上大中小型污水廠數(shù)量基本持平,但是大中型污水廠在處理能力上占據(jù)絕對優(yōu)勢,另外除3家污水廠外其余均采用的是GB二級標(biāo)準(zhǔn),在排放標(biāo)準(zhǔn)上也有很大的提升空間。其次根據(jù)調(diào)查分析情況本文采用層次分析法(AHP法),通過分析污水廠實際價值的主要影響因素,建立了北方污水廠工藝優(yōu)選評價模型,通過數(shù)學(xué)模型將定性指標(biāo)進(jìn)行量化,通過直觀的加權(quán)比較進(jìn)行工藝的優(yōu)劣分析。并將建立的模型應(yīng)用于遼寧省清原鎮(zhèn)污水處理廠的工藝選擇優(yōu)化,使用層次分析法確定CASS工藝、A/O工藝、雙氧化溝工藝和MSBR工藝的各項評價指標(biāo)權(quán)重為W=(0.267,0.052,0.052,0.095,0.267,0.267)T,在通過判斷矩陣計算方案層對于指標(biāo)層的權(quán)重,最后計算得出總權(quán)重為0.295,0.276,0.260,0.169,對比后最終確定CASS工藝為首選,并建立公式μ=0.267a+0.052b+0.052c+0.095d+0.267e+0.267f對模型進(jìn)行簡化。本文還建立了城市污水處理廠的績效評價體系對AHP法的結(jié)果進(jìn)行驗證,并對所選擇的工藝與其他污水廠的平均值進(jìn)行了橫向?qū)Ρ�。績效評估法通過設(shè)立各項指標(biāo)的標(biāo)準(zhǔn)值對污水廠的各評價維度進(jìn)行評分,將其應(yīng)用于大伙房上游流域小型污水處理廠的工藝優(yōu)選評價,擬合出污水廠各評價指標(biāo)標(biāo)準(zhǔn)值的回歸方程,分析驗證了各水廠所選擇工藝均能優(yōu)于標(biāo)準(zhǔn)水平,并根據(jù)各維度的評分對工藝的運行參數(shù)提出建議。通過維度方面的比較發(fā)現(xiàn)清原污水廠的設(shè)計在建設(shè)費用方面需要加以改進(jìn),南雜木污水廠的SS維度得分相比于其他水廠較低,比較得出CASS和接觸氧化工藝在低能耗方面優(yōu)勢明顯。
[Abstract]:The selection of sewage treatment process is one of the most important steps in the design stage of a new sewage plant. Whether the reasonable and applicable sewage treatment process can be selected according to the actual situation of the sewage plant directly determines the construction investment expenditure of the sewage plant. To deal with the emission standards and operating management difficulties and other indicators. However, most of the process selection in the design stage of the traditional sewage treatment plant depends on the design experience and subjective choice of the relevant designers, and there is no objective and fair evaluation method. It is necessary to set up a set of process selection evaluation methods with wide applicability and reasonable and reliable results to optimize the treatment process. Firstly, the monitoring data of 31 well-run sewage treatment plants in Northeast China are investigated. The design parameters of wastewater treatment plants in North China are statistically analyzed from the aspects of selection of process, design scale, discharge index and treatment effect. The analysis shows that the selection process is ANO, cast process is the most common, the design scale of large and medium-sized sewage plants is basically the same, but the large and medium-sized sewage plants occupy the absolute advantage in the treatment capacity. In addition, except for the three sewage plants, GB secondary standard is adopted, and there is great room for improvement in the discharge standard. Secondly, according to the investigation and analysis, this paper adopts the analytic hierarchy process (AHP), through the analysis of the main influencing factors of the actual value of the sewage plant, establishes the evaluation model of the process optimization of the northern wastewater treatment plant, and quantifies the qualitative indexes through the mathematical model. The advantages and disadvantages of the process are analyzed by intuitive weighted comparison. The model was applied to the process selection and optimization of Qingyuan Town sewage treatment Plant in Liaoning Province. The CASS process and ANO process were determined by analytic hierarchy process (AHP). The weights of the evaluation indexes of the double oxidation ditch process and the MSBR process are W = (0.267, 0.052, 0.052, 0.095, 0.267, 0.267) T, and the weights of the scheme layer to the index layer are calculated by the judgment matrix. Finally, the total weight is 0.295,0.276,0.260,0.169. After comparison, the CASS process is the first choice, and the formula 渭 = 0.267a 0.052b 0.052c 0.095d 0.267e 0.267f is established to simplify the model. In this paper, the performance evaluation system of municipal wastewater treatment plant is established to verify the results of AHP method, and the average value of the selected process is compared with the average value of other wastewater treatment plants. By setting up the standard value of each index, the performance evaluation method is applied to the process optimization evaluation of the small sewage treatment plant in the upper reaches of the large-scale houses, and the evaluation dimension of the wastewater treatment plant is evaluated by the standard value of the performance evaluation method. By fitting out the regression equation of the standard value of each evaluation index of the wastewater treatment plant, it is verified that the process selected by each water plant can be superior to the standard level, and the operation parameters of the process are suggested according to the score of each dimension. Through the comparison of dimensions, it is found that the design of Qingyuan sewage plant needs to be improved in the aspect of construction cost. The SS dimension score of Nanzagi sewage plant is lower than that of other water plants. It is concluded that the advantages of CASS and contact oxidation process in low energy consumption are obvious.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X703
本文編號：2455863
[Abstract]:The selection of sewage treatment process is one of the most important steps in the design stage of a new sewage plant. Whether the reasonable and applicable sewage treatment process can be selected according to the actual situation of the sewage plant directly determines the construction investment expenditure of the sewage plant. To deal with the emission standards and operating management difficulties and other indicators. However, most of the process selection in the design stage of the traditional sewage treatment plant depends on the design experience and subjective choice of the relevant designers, and there is no objective and fair evaluation method. It is necessary to set up a set of process selection evaluation methods with wide applicability and reasonable and reliable results to optimize the treatment process. Firstly, the monitoring data of 31 well-run sewage treatment plants in Northeast China are investigated. The design parameters of wastewater treatment plants in North China are statistically analyzed from the aspects of selection of process, design scale, discharge index and treatment effect. The analysis shows that the selection process is ANO, cast process is the most common, the design scale of large and medium-sized sewage plants is basically the same, but the large and medium-sized sewage plants occupy the absolute advantage in the treatment capacity. In addition, except for the three sewage plants, GB secondary standard is adopted, and there is great room for improvement in the discharge standard. Secondly, according to the investigation and analysis, this paper adopts the analytic hierarchy process (AHP), through the analysis of the main influencing factors of the actual value of the sewage plant, establishes the evaluation model of the process optimization of the northern wastewater treatment plant, and quantifies the qualitative indexes through the mathematical model. The advantages and disadvantages of the process are analyzed by intuitive weighted comparison. The model was applied to the process selection and optimization of Qingyuan Town sewage treatment Plant in Liaoning Province. The CASS process and ANO process were determined by analytic hierarchy process (AHP). The weights of the evaluation indexes of the double oxidation ditch process and the MSBR process are W = (0.267, 0.052, 0.052, 0.095, 0.267, 0.267) T, and the weights of the scheme layer to the index layer are calculated by the judgment matrix. Finally, the total weight is 0.295,0.276,0.260,0.169. After comparison, the CASS process is the first choice, and the formula 渭 = 0.267a 0.052b 0.052c 0.095d 0.267e 0.267f is established to simplify the model. In this paper, the performance evaluation system of municipal wastewater treatment plant is established to verify the results of AHP method, and the average value of the selected process is compared with the average value of other wastewater treatment plants. By setting up the standard value of each index, the performance evaluation method is applied to the process optimization evaluation of the small sewage treatment plant in the upper reaches of the large-scale houses, and the evaluation dimension of the wastewater treatment plant is evaluated by the standard value of the performance evaluation method. By fitting out the regression equation of the standard value of each evaluation index of the wastewater treatment plant, it is verified that the process selected by each water plant can be superior to the standard level, and the operation parameters of the process are suggested according to the score of each dimension. Through the comparison of dimensions, it is found that the design of Qingyuan sewage plant needs to be improved in the aspect of construction cost. The SS dimension score of Nanzagi sewage plant is lower than that of other water plants. It is concluded that the advantages of CASS and contact oxidation process in low energy consumption are obvious.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X703
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