上流式厭氧汙泥床間歇循環操作處理養牛廢水之效能

Performance of Intermittent Recirculation for the Treatment of Cow Wastewater by a UASB Reactor

雷威隆(Jose Manuel Reinosa)

指導教授 ： 林龍富

共同指導教授 ： 王松浩(Song-Haow Wang)

崑山科技大學/工程學院/機械工程研究所/碩士(2012年)

https://doi.org/10.6828/KSU.2012.00048

摘要

無資料

關鍵字

厭氧處理 ； UASB反應器 ； 牛廢水 ； 沼氣 ； 間歇性循環

並列摘要

This work presents the performance of intermittent recirculation for the treatment of cow wastewater by a 11.4L bench scale upflow anaerobic sludge blanket
(UASB) reactor. It was operated at room temperature (13.6 -27.8°C) with 1.1-5.1 kg COD/m3-d of organic loading for 186 days. At the start up period the reactor was operated with 0.127 m/hr superficial velocity by continuing recirculation. However the UASB reactor exhibited inoperable conditions due to the sludge bed expansion to the
top of the reactor. Therefore we proposed the new four operation modes by switching the recirculation pump (without recirculation with 0.0186 m/hr of superficial velocity), the cycle was 1 hour and the intervals of recirculation mode ON vary form 15, 10, 5 minutes, and without recirculation. Results of this investigation showed that intermittent recirculation can promote the performance of UASB reactor for treating cow wastewater, and the mode of “15/45” has a best performance with 48% of total chemical oxygen demand removal efficiency, 63.2% of suspended solids removal efficiency, and a biogas production rate of 0.66 m3 (25°C, 1atm) per m3 wastewater per day. A better performance could be expected by maintaining a higher temperature in the UASB reactor. Additionally the biogas composition was tested for the modes of 10 minutes ON, 5 minutes ON and without recirculation, the highest CH4 content obtained was
84.4% for the mode of without recirculation, this CH4 content is significantly higher than what the literature says of 70 %, also this represents a higher calorific value.

並列關鍵字

Anaerobic treatment ； UASB reactor ； cow wastewater ； methane ； biogas ； intermittent recirculation

參考文獻

Abbasi, T., and Abbasi, S. (2012). Formation and impact of granules in fostering clean energy production and wastewater treatment in upflow anaerobic sludge blanket

(UASB) reactors. Renewable and Sustainable Energy Reviews, 1696-1708.

Agrawal Lalit K., H. H.-C. (1997). Treatment of dilute wastewater in a UASB reactor at a Moderate Temperature: Microbiological Aspects. Journal of Fermentation and

APHA. (1992). Standard methods for the examination of water and wastewater (18th edition ed.). APHA-AWWA-WEF.

Batres, A. (2011, May 28). El Periodico. Available at: