Characteristics of greenhouse gas emissions from an anaerobic wastewater treatment system in a natural rubber processing factory
Characteristics of greenhouse gas emissions from an anaerobic wastewater treatment system in a natural rubber processing factory
复制标题
天然橡胶加工厂厌氧废水处理系统温室气体排放特征
DOI：
10.1080/09593330.2018.1459872
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发表时间：
2018
影响因子：
2.8
通讯作者：
T. Yamaguchi
中科院分区：
文献类型：
--
作者：
D. Tanikawa;T. Watari;C. M. Trung;M. Fukuda;K. Syutsubo;N. B. Nguyen;T. Yamaguchi
调查了越南天然橡胶加工厂开放式和封闭式厌氧废水处理系统的温室气体（GHG）排放。在这个工厂，废水处理的开放式厌氧折流板反应器（OABR），包括60个隔间。一部分废水被输送到中试规模的上流式厌氧污泥床（UASB）反应器中，以将该反应器的工艺性能和温室气体排放特征与OABR的工艺性能和温室气体排放特征进行比较。OABR对COD和氨氮的去除率分别为94.4%和18.1%。OABR排放的温室气体包括甲烷和一氧化二氮。OABR的温室气体排放总量为0. 153 t-CO2当量/m3废水。一氧化二氮约占OABR排放的温室气体总量的65%。相比之下，99.6%的甲烷和99.9%的氧化亚氮排放量减少的应用UASB。然而，UASB的氨氮去除率仅为2.2%。此外，约氏不动杆菌，这是已知的异养氨去除剂，仅在OABR中检测到。这些结果表明，高的一氧化二氮的排放是由反硝化OABR和封闭厌氧系统的应用程序可以大大减少甲烷和一氧化二氮的排放。
Greenhouse gas (GHG) emissions from both open-type and closed anaerobic wastewater treatment systems in a natural rubber processing factory in Vietnam were surveyed. In this factory, wastewater was treated by an open-type anaerobic baffled reactor (OABR) that comprised 60 compartments. A part of the wastewater was fed to a pilot-scale up-flow anaerobic sludge blanket (UASB) reactor to enable a comparison of the process performance and GHG emission characteristics with those of the OABR. In the OABR, 94.4% of the total chemical oxygen demand (COD) and 18.1% of ammonia nitrogen was removed. GHGs emitted from the OABR included both methane and nitrous oxide. The total GHGs emitted from the OABR was 0.153 t-CO 2 eq/m 3-wastewater. Nitrous oxide accounted for approximately 65% of the total GHGs emitted from the OABR. By contrast, 99.6% of the methane emission and 99.9% of nitrous oxide emission were reduced by application of the UASB. However, the ammonia removal efficiency of the UASB was only 2.2%. Furthermore, Acinetobacter johnsonii, which is known as a heterotrophic ammonia remover, was detected only in the OABR. These results indicated that high nitrous oxide emissions were caused by denitrification in the OABR and that application of the closed anaerobic system could drastically reduce the emissions of both methane and nitrous oxide.