厭氧氨氧化煙氣脫硝工藝的探討
[Abstract]:The biological flue gas denitrification process based on denitrification has the advantages of high denitrification efficiency, simple process equipment, low construction cost and so on, but it also needs additional electron donors to release greenhouse gas (nitrous oxide) and so on. The new biological flue gas denitrification process based on anaerobic ammonia oxidation is expected to solve the above problems. In this paper, from the point of view of nitrogen cycling, it is pointed out that anaerobic ammonia oxidation and denitrification are similar in biological denitrification. Based on the biochemical reaction model of anaerobic ammonia oxidation, the feasibility of anaerobic ammonia oxidation flue gas denitrification process is discussed, and the corresponding factual basis is provided. Based on mass transfer and reaction process, the possible realization and key problems of anaerobic ammonia oxidation flue gas denitrification process were analyzed. It is pointed out that ammonium and nitric oxide can be converted to hydrazine by anaerobic ammonia oxidation, and hydrazine can be further decomposed into nitrogen, thus realizing flue gas denitrification. Considering the large amount of flue gas treatment, the way of anaerobic ammonia oxidation flue gas denitrification process is to transfer nitric oxide from gas phase to liquid phase by chemical absorption, and then to realize nitrogen removal by anaerobic ammonia oxidation reaction. The key problems of anaerobic ammonia oxidation flue gas denitrification process are mainly phase transfer and strain culture, including the selection and regeneration of chemical absorbent, the cooperative culture of denitrification bacteria, and so on.
【作者單位】: 首都經(jīng)濟(jì)貿(mào)易大學(xué)安全與環(huán)境工程學(xué)院;首都經(jīng)濟(jì)貿(mào)易大學(xué)特大城市經(jīng)濟(jì)社會(huì)發(fā)展研究協(xié)同創(chuàng)新中心;
【基金】:首都經(jīng)濟(jì)貿(mào)易大學(xué)科研項(xiàng)目(2016XJQ001) 首都經(jīng)濟(jì)貿(mào)易大學(xué)2015年度科研啟動(dòng)基金成果(00891554410202) 北京市組織部?jī)?yōu)秀人才項(xiàng)目(2015000020124G090) 首都經(jīng)濟(jì)貿(mào)易大學(xué)特大城市經(jīng)濟(jì)社會(huì)發(fā)展研究協(xié)同創(chuàng)新中心項(xiàng)目(00891662740115)
【分類(lèi)號(hào)】:X701
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