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  • 學位論文

生活污水A2O系統節能效益之研究-以大樹污水處理廠為例生活污水A2O系統節能效益之研究-以大樹污水處理廠為例

Energy saving evaluation of A2O system in a domestic wastewater treatment plant-Case study of Dashu wastewater treatment plant

指導教授 : 郭文健

摘要


水是一種人類最重要且需要的天然資源,而電力則是產業的發展基礎。它們同時是提供人類日常生活的必需品。有鑒於此,本研究結合作者目前的工作,以大樹污水處理廠操作為例,進行處理功能提升及節能措施改善之探討,主要是目前進流水量僅為原設計值之23%,此外,氮及磷在放流水的要求上不一定需要達到法規要求。預期透過單元操作流程的調整,以達到節能省源及功能之提升。 在本研究中,重點在於生物處理單元的操作調整,其用電量約佔全廠37%。故將原設計生物處理單元A2O系統調整為活性污泥法進行操作,同時考慮兩套操作條件之一致性及穩定性,數據收集則以同一時期(98年6月至11月A2O系統操作模式及99年活性污泥法操作模式6月至11月)進行收集。在本研究中,不改變處理流程之情形,以活性污泥法進行操作,並進行水質採樣分析,探討在生物處理單元調整前、後,用電量及放流水質之變化影響。 本研究結果顯示,處理流程改為活性污泥法操作之後,全廠用電量節省了22%;另外,在放流水質方面,BOD、COD、SS分別為6.1、18.6及6.8 mg/L,活性污泥法與A2O系統操作時沒有明顯差異;但在T-N、T-P方面,平均放流水濃度分別為12.68及1.307 mg/L,活性污泥法操作時較A2O系統操作略為增加,雖然對承受水體高屏溪每年80幾億噸的水量而言,T-N、T-P濃度的增量極為有限,但長期對環境的影響仍是一個問題。

關鍵字

節能效益 節能措施 用電量

並列摘要


Water is one of the most important natural resources mankind needs, while the electric power is the base of industrial development. Both of the two also provide what people need in daily life and necessaries for mankind. Therefore, this research combined the author’s job and used the operation of Dashu wastewater treatment plant as example to discuss the performance promotion and measure improvement of energy conservation. Currently the influent flowrate is only 23% of the original design, furthermore, the discharge does not have to meet the nutrient requirements of nitrogen and phosphorus. It is expected that, through the adjustment of unit operation and process, performance and be enhanced and energy can be saved. In this study, biological treatment units are the focus of operation adjustment, which contributes about 37% of power consumption of the whole plant. The original design of A2O processes are adjusted to the activated sludge system for energy saving. In consideration of the consistency and stability of the evaluation, data collections are arranged at the same period of the year, i.e., operation of A2O system mode from June to November, 2009 and operation of activated sludge mode from June to November, 2010). In this investigation, with no change in the treatment processes, the activated sludge was used to operate the system and water qualities were sampled. The water quality and energy consumption were studied before and after the adjustment of biological treatment process. From this research it was found that 22% of electric power cost was saved using the activated sludge process. Meanwhile, in water quality, the effluents of BOD, COD, and SS are 6.1, 18.6, and 6.8 mg/L, respectively. There is no significant difference between the activated sludge treatment and A2O operations. However, in the concentrations of Total Nitrogen and Phosphorous, the average effluent concentrations are 12.68 and 1.307 mg/L, respectively. There is a slight increase in the activated sludge treatment than the A2O operation. Although the minute increases of Total N and P is extremely limited to the annual runoff of more than 8 billion cubic meters in the Kao-ping River, its long term impact upon the environment is still a concern.

參考文獻


Hoi-Ping Shi, Chi-Mei Lee,2006, “Combining anoxic denitrifying ability with aerobic–anoxic phosphorus-removal examinations to screen denitrifying phosphorus-removing bacteria(Taiwan)“,International Biodeterioration & Biodegradation 57,pp.121–128.
Mulkerrins. D., Dobson. A.D.W., Colleran. E., 2004,” Parameters affecting biological phosphate removal from wastewaters”, Environment International 30 ,pp.249– 259.
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Wei Zeng,Lei Li,Ying-ying Yang,Xiang-dong Wang,Yong-zhen Peng,2010,Denitrifying phosphorus removal and impact of nitrite accumulation on phosphorus removal in acontinuous anaerobic–anoxic–aerobic (A2O) process treating domestic wastewater, Enzyme and Microbial Technology, In Press, Corrected Proof.
Xiong Zheng, Juan Tong, Hongjing Li, Yinguang Chen,2009,”The investigation of effect of organic carbon sources addition in anaerobic–aerobic (low dissolved oxygen) sequencing batch reactor for nutrients removal from wastewaters”,Bioresource Technology, Volume 100, Issue 9,pp 2515-2520.

被引用紀錄


吳孟純(2012)。污水處理廠去除個人防護用品及放流水質對承受水體之評估探討〔碩士論文,國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346%2fNPUST.2012.00270

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