Process behavior of UASB reactor treating a wastewater containing high strength sulfate
Process behavior of UASB reactor treating a wastewater containing high strength sulfate
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DOI：
10.1016/s0043-1354(99)00029-9
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发表时间：
1999-10
期刊：
影响因子：
12.8
通讯作者：
Takashi Yamaguchi;H. Harada;Tomoaki Hisano;S. Yamazaki;I. Tseng
中科院分区：
文献类型：
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作者：
Takashi Yamaguchi;H. Harada;Tomoaki Hisano;S. Yamazaki;I. Tseng
两个UASB反应器并联运行了两年，一个接收富含硫酸盐的废水（2000 mg CODl− 1 vs 1000 mg SO 42 −-Sl−1），另一个接收贫硫酸盐的废水（2000 mg CODl− 1 vs 33 mg SO 42 −-Sl−1），以比较彼此的工艺行为。小瓶活性测试表明，未解离的硫化氢对甲烷产生菌的抑制作用更严重，而不是对硫酸盐还原菌。为了减轻硫化物抑制，硫化物剥离装置被纳入富硫酸盐UASB反应器。结果表明，富硫酸盐的UASB成功地容纳了1.3kg SO 42 −-Sm−3d− 1的硫酸盐负荷，COD去除率为90%。在富硫酸盐的UASB中进行的COD消除与不产甲烷有关，但完全由硫酸盐还原菌单独进行。利用氢的硫酸盐还原菌的增殖，利用氢的产甲烷菌完全排除在富含硫酸盐的污泥财团。
Two UASB reactors were in parallel operated over two years, the one receiving a sulfate-rich wastewater (2000mg CODl−1versus 1000mg SO42−-Sl−1), and the other receiving a sulfate-poor wastewater (2000mg CODl−1versus 33mg SO42−-Sl−1), in order to compare the process behaviors with each other. Vial activity tests revealed that undissociated hydrogen sulfide caused an inhibitory effect more seriously on methane producing bacteria, rather than on sulfate reducing bacteria. In order to alleviate sulfide inhibition, a sulfide-stripping device was incorporated in the sulfate-rich UASB reactor. As a result, the sulfate-rich UASB accommodated successfully a sulfate loading of 1.3kg SO42−-Sm−3d−1with 90% COD removal. The COD elimination carried out in the sulfate-rich UASB was associated with no methanogenesis, but was thoroughly performed by sulfate reducing bacteria solely. Hydrogen-utilizing methanogens were completely excluded from the sulfate-rich sludge consortium by proliferation of hydrogen-utilizing sulfate reducers.