在具有土壤层的滴滤生物滤池中提高猪废水消化液的脱氮效果。
Enhancing the nitrogen removal from swine wastewater digested liquid in a trickling biofilter with a soil layer.
作者信息
Zhao Bowei, Xie Fei, Zhang Xiao, Yue Xiuping
机构信息
College of Environmental Science and Engineering, Taiyuan University of Technology 79 Yingzexi Road Taiyuan 030000 P. R. China
出版信息
RSC Adv. 2020 Jun 23;10(40):23782-23791. doi: 10.1039/d0ra03333b. eCollection 2020 Jun 19.
Trickling biofilters (TFs) allow for a simultaneous nitrification and denitrification (SND) process, and offer a favorable solution for the treatment of swine-wastewater digested liquid due to their simple operation and low cost. In this study, a soil trickling biofilter (STF) was developed to enhance nitrogen removal. A gravel trickling filter (GTF) and a woodchip trickling filter (WTF) were also constructed and operated synchronously to demonstrate the advantage of micron-sized media. The results showed that the STF had a higher ammonium nitrogen (NH -N) removal capacity of 21.4%, 24.9%, and 18.3% in comparison to the GTF when the influent NH -N was 192.9 mg L, 500.2 mg L and 802.1 mg L, respectively. The total nitrogen (TN) removal capacity of the STF was 104.6%, 89.4%, and 37.5% higher than that of the WTF. Thus, the addition of micron-sized soil to TF could increase the systemic nitrogen removal capacity.
滴滤生物滤池（TFs）可实现同步硝化反硝化（SND）过程，并且由于其操作简单、成本低，为猪废水消化液的处理提供了一个良好的解决方案。在本研究中，开发了一种土壤滴滤生物滤池（STF）以提高氮去除率。还同步构建并运行了砾石滴滤池（GTF）和木屑滴滤池（WTF），以证明微米级介质的优势。结果表明，当进水氨氮分别为192.9 mg/L、500.2 mg/L和802.1 mg/L时，与GTF相比，STF的氨氮去除能力分别高出21.4%、24.9%和18.3%。STF的总氮（TN）去除能力比WTF分别高出104.6%、89.4%和37.5%。因此，向TF中添加微米级土壤可以提高系统的氮去除能力。
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