UAFB-EGSB 生物系统在不同温度下进行污水能源回收和自养脱氮处理。
Sewage treatment by an UAFB-EGSB biosystem with energy recovery and autotrophic nitrogen removal under different temperatures.
机构信息
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
出版信息
Bioresour Technol. 2015 Apr;181:26-31. doi: 10.1016/j.biortech.2015.01.037. Epub 2015 Jan 17.
A system combined an upflow anaerobic fixed bed (UAFB) and an expanded granular sludge bed (EGSB) was designed and verified as a success for treating real sewage with simultaneous energy recovery and autotrophic nitrogen removal. The impact of temperature (stepwise decreased from 30 °C to 20 °C and 10 °C) was a primary focus, aiming to reveal the response of the anaerobic digestion (AD) and anammox efficiency to the temperature variation. As the temperature decreases, the soluble chemical oxygen demand (sCOD) removal rate was 90.6%, 90.0% and 84.7%, respectively; total nitrogen (TN) removal was 69.4%, 48.8%, 38.4%, respectively; NH4(+)-N removal was 91.3%, 74.9%, 65.1%, respectively. Methanogenic activity of UAFB was significantly influenced by low temperatures, while the unavoidable growth of heterotrophic organisms in EGSB also contributed to the sCOD removal, even at 10 °C. Lower working temperature (10/20 °C) limited the growth and activity of ammonia-oxidizing bacteria (AOB) and anaerobic ammonia oxidation bacteria (AnAOB), but improved the nitrite-oxidizing bacteria (NOB) activity.
设计并验证了一种上流式厌氧固定床（UAFB）和膨胀颗粒污泥床（EGSB）相结合的系统，该系统成功地用于处理实际污水，同时实现了能量回收和自养脱氮。温度的影响（逐步从 30°C 降低到 20°C 和 10°C）是主要关注点，旨在揭示厌氧消化（AD）和厌氧氨氧化效率对温度变化的响应。随着温度的降低，可溶性化学需氧量（sCOD）去除率分别为 90.6%、90.0%和 84.7%；总氮（TN）去除率分别为 69.4%、48.8%、38.4%；NH4(+)-N 去除率分别为 91.3%、74.9%、65.1%。UAFB 的产甲烷活性受到低温的显著影响，而 EGSB 中不可避免的异养生物的生长也有助于 sCOD 的去除，即使在 10°C 时也是如此。较低的工作温度（10/20°C）限制了氨氧化细菌（AOB）和厌氧氨氧化细菌（AnAOB）的生长和活性，但提高了亚硝酸盐氧化细菌（NOB）的活性。
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