التفاصيل البيبلوغرافية
| العنوان: |
好氧颗粒污泥对活性黑 5 染料的降解. (Chinese) |
| Alternate Title: |
Degradation of reactive black 5 dye by aerobic granular sludge. (English) |
| المؤلفون: |
陈 希, 胡 彬, 曹 旭, 宫延哲, 张媛媛, 王 瀚 |
| المصدر: |
Journal of Xi'an Polytechnic University; 2023, Vol. 37 Issue 2, p32-39, 8p |
| مصطلحات موضوعية: |
AZO dyes, NITRIFYING bacteria, DOUBLE bonds, BATCH reactors, POLLUTANTS, SEQUENCE analysis, SEQUENCING batch reactor process, COLOR removal in water purification |
| Abstract (English): |
In order to explore the removal effect and degradation mechanism of the reactive black 5 dye in the aerobic granular sludge system. a constant working volume sequential batch reactor（SBR) was set up to cultivate aerobic granular sludge under alternative anaerobic and aerobic operating condition to treat synthetic azo dye wastewater.The removal efficiency of COD, NH+4-N and PO43--P and the removal load of reactive black 5 were measured in the SBR system, and the mechanism of azo dyes was further explored by high through-put sequencing of 16S rRNA gene.The results showed that the SBR system had a good effect in removing pollutants, the removal rates of COD, NH+4-N and PO43--P reached 90%, 95% and above 95% at the end of culture period, and the removal of azo dye maintained around 0.005 kg·（kg·d）-1.The azo double bond of the reactive black 5 dye mainly broke at the anaerobic stage, and the intermediates containing benzene and naphthalene rings were degraded at the aerobic stage.High-throughput sequencing analysis of the 16S rRNA gene showed that azo dye increased the nitrogen load of the SBR system, thus increasing the abundance of nitrifying bacteria and the bacteria which had the function of denitrifying or degrading aromatic substances genera such as Paracoccus, Azoarcus and Thauera. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为探究活性黑 5 染料在好氧颗粒污泥系统中的去除效果和降解机理,在等工作体积的序批 式反应器(sequencing batch reactor, SBR)中,采用厌氧好氧交替环境培养好氧颗粒污泥处理模拟 偶氮染料废水,测定 SBR 系统对 COD、NH + 4-N、PO 3- 4 -P的去除效率及对活性黑5的去除负荷,并 通过 16SrRNA 基因高通量测序分析偶氮染料的去除机理。结果表明:SBR 系统对污染物去除效 果良好,培养末期对 COD、NH + 4-N、PO 3- 4 -P的去除率分别可达90%、95%、95%以上,对活性黑 5 的去除负荷稳定在约0.005kg·(kg·d)-1。活性黑5的偶氮键断裂主要发生在厌氧阶段,产生 的含苯环和萘环的中间产物主要在好氧阶段通过氧化去除。16S rRNA 基因高通量测序结果显 示,偶氮染料提高了 SBR 系统硝化菌门以及具有反硝化或降解芳香类物质功能的 Paracoccus, Azoarcus和Thauera 属的丰度。 [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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