从循环沼气中吸收去除硫化氢

IF 0.9 Q4 CHEMISTRY, MULTIDISCIPLINARY
Nikolas Gróf, J. Barbušová, Kristína Hencelová, M. Hutňan
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引用次数: 1

摘要

摘要本研究的重点是在UASB反应器中,沼气再循环和硫化氢去除对含硫合成废水厌氧处理的影响。沼气中硫化氢的存在会导致其进一步的能量回收出现问题,而硫化物会抑制厌氧过程。反应器逐渐装载硫酸盐,并监测它们对反应器操作的影响。同时,采用吸收剂再生法对外吸收沼气中的硫化氢进行了操作。结果表明,低浓度的添加硫酸盐支持沼气生产。硫酸盐浓度为125 mg l−1时,沼气产量增加了约2 l d−1。然而,底物中硫酸盐含量的进一步增加导致了相反的效果。在硫酸盐用量为两倍的情况下,沼气产量下降了1 l d−1,并观察到其对去除N-NH4、NC和P-PO4的不利影响。通过吸收柱的生物气体再循环确保了硫化氢浓度从19 960 ppm降低到4 030 ppm,甲烷含量从59.2%增加到83%,以及反应器中硫化物浓度的降低。从测量数据可以得出结论,该方法降低了硫化物的抑制作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Absorption removal of hydrogen sulfide from recirculated biogas
Abstract This study is focused on the effect of biogas recirculation with hydrogen sulfide removal on anaerobic treatment of sulfur-enriched synthetic wastewater in a UASB reactor. The presence of hydrogen sulfide in biogas causes problems in its further energy recovery while sulfides inhibit the anaerobic process. The reactor was gradually loaded with sulfates and their effect on the reactor operation was monitored. At the same time, external absorption of hydrogen sulfide from biogas with absorbent regeneration was operated. The results show that low concentrations of added sulfates support biogas production. At the sulfate concentration of 125 mg l−1, biogas production increased by approximately 2 l d−1. However, further increasing of the amount of sulfates in the substrate led to the opposite effect. At twice the amount of sulfates, the biogas production decrease by 1 l d−1 and its adverse effects on the removal of N-NH4, NC and P-PO4 were observed. Biogas recirculation through the absorption column ensured a decrease in the hydrogen sulfide concentration from 19 960 ppm to 4 030 ppm and an increase in the methane content from 59.2 % to 83 % and also a decrease in the sulfides concentration in the reactor. From the measured data it can be concluded that this method reduces sulfides inhibition.
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来源期刊
Acta Chimica Slovaca
Acta Chimica Slovaca CHEMISTRY, MULTIDISCIPLINARY-
自引率
12.50%
发文量
11
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