ZHANG Yong,HU Qun-lin,XU Guang-song,et al.Effect of Pumice on Start-up of Upflow Anaerobic Sludge Blanket[J].China Water & Wastewater,2021,37(21):75-81.
蜂巢石对UASB反应器启动性能的影响
- Title:
- Effect of Pumice on Start-up of Upflow Anaerobic Sludge Blanket
- Keywords:
- pumice; UASB; anaerobic granular sludge; gas yield performance
- 摘要:
- 向厌氧系统中投加载体材料是促进反应器快速启动的有效手段，为此将蜂巢石投加到上流式污泥床反应器（UASB）中，研究蜂巢石对UASB反应器处理垃圾焚烧发电渗滤液启动性能的影响。结果表明，与未投加蜂巢石相比，投加蜂巢石的反应器可在24 d内完成启动，COD去除率保持在90%以上，启动时间缩短了10 d；反应器的产气性能得到显著提升，平均日产气量与产甲烷量分别提高9.38%和9.81%；同时挥发性悬浮物/总悬浮物（VSS/TSS）与蛋白质平均含量分别提高6.7%、21.4%，导致粒径大于0.50 mm的污泥占污泥总量的比例达22.56%，远高于对照组的7.39%，污泥在15 d内实现了颗粒化。
- Abstract:
- Adding carrier material to an anaerobic system is an effective way to accelerate the start-up of the reactor. In this work, pumice was added into an upflow anaerobic sludge blanket (UASB), and the effect of pumice on the start-up of the reactor for the treatment of leachate from a waste incineration power plant was investigated. Compared with the reactor without pumice, the reactor with pumice was started within 24 days, the COD removal efficiency remained above 90%, and the startup time was shortened by 10 days. The gas yield performance of the reactor was significantly improved, and the average daily gas and methane yields were increased by 9.38% and 9.81%, respectively. At the same time, the ratio of VSS/TSS and the average content of protein increased by 6.7% and 21.4%, respectively, resulting in the portion of the sludge with particle size greater than 0.50 mm to the total sludge was 22.56%, which was much higher than that of the control group (7.39%). Therefore, the sludge was successfully granulated within 15 days.
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