本文選題：厭氧氨氧化 + 硫酸鹽還原氨氧化��； 參考：《蘇州科技大學(xué)》2017年碩士論文

【摘要】：NH_4~+與SO_4~(2-)在接種ANAMMOX培養(yǎng)物的無機(jī)條件下發(fā)生同步轉(zhuǎn)化的現(xiàn)象(SRAO)得到研究者的關(guān)注,并據(jù)此認(rèn)為這是發(fā)生了以SO_4~(2-)為電子受體的NH_4~+氧化過程。然而從相關(guān)文獻(xiàn)報(bào)道可以看出,?N/?S普遍高于理論推測(cè)值、NH_4~+與SO_4~(2-)存在獨(dú)立轉(zhuǎn)化現(xiàn)象、不同研究者之間所觀察到的實(shí)驗(yàn)現(xiàn)象存在明顯區(qū)別等,這些問題和疑惑的阻礙了本課題的進(jìn)一步深入研究。所以,根據(jù)目前所存在的疑問以及需要解決的問題,本文研究了以下三方面的內(nèi)容:(1)在嚴(yán)格厭氧環(huán)境下NH_4~+與SO_4~(2-)能否發(fā)生反應(yīng);(2)厭氧環(huán)境中觀察到的NH_4~+與SO_4~(2-)同步轉(zhuǎn)化是否為兩者之間發(fā)生的反應(yīng);(3)NH_4~+與SO_4~(2-)同步消耗的轉(zhuǎn)化機(jī)制。在無機(jī)環(huán)境下,接種Anammox培養(yǎng)物,采用CFSTR及Batch的方式進(jìn)行實(shí)驗(yàn)研究,得出以下結(jié)論:1)在無機(jī)厭氧環(huán)境條件下(ORP㧟300 mV±10 mV),NH_4~+與SO_4~(2-)可以發(fā)生同步轉(zhuǎn)化。?N/?S普遍高于理論推測(cè)值,得失電子不平衡,說明系統(tǒng)中有外源電子參與反應(yīng);Batch 1實(shí)驗(yàn)中NH_4~+與SO_4~(2-)整體上都有轉(zhuǎn)化,但各階段中兩者并不保持同步,說明NH_4~+與SO_4~(2-)的轉(zhuǎn)化并不一定是兩者之間的反應(yīng);在無SO_4~(2-)存在的厭氧條件下,NH_4~+同樣可以發(fā)生轉(zhuǎn)化,說明NH_4~+的轉(zhuǎn)化與SO_4~(2-)并沒有直接的關(guān)系。2)嚴(yán)格厭氧環(huán)境下(ORP為㧟490 mV±5 mV),NH_4~+不發(fā)生轉(zhuǎn)化,而SO_4~(2-)會(huì)單獨(dú)進(jìn)行轉(zhuǎn)化,說明SO_4~(2-)厭氧還原的電子供體并不是NH_4~+�？傊�,實(shí)驗(yàn)中所觀察到的NH_4~+與SO_4~(2-)同步轉(zhuǎn)化現(xiàn)象是兩者各自獨(dú)立轉(zhuǎn)化的結(jié)果。另外,通過本文研究得到的結(jié)論對(duì)各研究者文獻(xiàn)資料的深入分析,從其?N/?S普遍高于理論值反映有外源電子受體進(jìn)入到系統(tǒng)、NH_4~+在常規(guī)Anammox階段的過量轉(zhuǎn)化與SRAO過程的獨(dú)立轉(zhuǎn)化現(xiàn)象、啟動(dòng)時(shí)間及轉(zhuǎn)化速率倍增時(shí)間、熱力學(xué)方面的分析論證等方面證明:文獻(xiàn)中所觀察到的NH_4~+與SO_4~(2-)同步轉(zhuǎn)化也可能并不是兩者之間進(jìn)行的反應(yīng)。結(jié)合本文研究及文獻(xiàn)分析推測(cè):本實(shí)驗(yàn)及相關(guān)文獻(xiàn)中SRAO過程轉(zhuǎn)化的NH_4~+主要是被O2及其氧化產(chǎn)物NO2-所氧化,SRAO過程中消耗的SO_4~(2-)主要是被微生物衰亡釋放的有機(jī)物進(jìn)行的異養(yǎng)還原;同時(shí),NH_4~+的氧化產(chǎn)物NO2-/NO_3~-還可能會(huì)與SO_4~(2-)的還原產(chǎn)物S2-進(jìn)行硫自養(yǎng)反硝化反應(yīng)生成S0/含硫膠體/SO_4~(2-)。并且,文獻(xiàn)資料分析及理論計(jì)算證明,本文所推測(cè)的基質(zhì)轉(zhuǎn)化機(jī)制與實(shí)際實(shí)驗(yàn)現(xiàn)象相符合,可以很好的解釋各研究者實(shí)驗(yàn)中存在的問題和疑惑。
[Abstract]:The phenomenon of simultaneous transformation of NH4- and SO4- (2) in inorganic condition inoculated with ANAMMOX culture (SRAO) has attracted the attention of researchers, and it is considered that this is a process of NH4- oxidation in which so _ 4 / C _ (2-) is an electronic receptor. However, it can be seen from the relevant literature reports that there is a phenomenon of independent transformation of N- / S generally higher than that of theoretical conjecture, and there are obvious differences between the experimental phenomena observed by different researchers and so on. These questions and doubts hinder the further study of this subject. So, based on the existing questions and the problems that need to be solved, In this paper, we have studied the following three aspects: 1) whether there is a reaction between NH _ 4 ~ and so _ 4 / T _ 2 in a strict anaerobic environment?) whether the simultaneous conversion of NH _ 4 ~ and so _ 4 ~ is observed in the anaerobic environment as a reaction between them, and whether the simultaneous conversion of NH _ 4 ~ and so _ 4 ~ + is a mechanism of simultaneous consumption of NH _ 4 ~ and so _ 4 ~. In inorganic environment, inoculated with Anammox culture and studied by CFSTR and Batch, the following conclusions are drawn: (1) in inorganic anaerobic environment, ORP (300mV 鹵10mV) NH4- and SO4- (2-) can occur synchronous transformation. The imbalance of gain and loss of electrons indicates that there are exogenous electrons involved in the reaction of Batch _ 1 experiment. In the experiment of Batch _ 1, NH4- and SO4- (2) are transformed as a whole, but they are not kept in sync in each stage, which means that the transformation of NH4- and SO4- (2) is not necessarily a reaction between the two. Under the anaerobic condition of no so _ 4 ~), NH4~ can also be transformed, indicating that the conversion of NH _ 4~ is not directly related to so _ 4 ~). (2) under the strict anaerobic environment, the ORP is 490mV 鹵5mV ~ V / NH _ 4T ~ and no conversion takes place, while the so _ 4s _ 4 ~ + _ 2) will be transformed alone. The results show that the electron donor for anaerobic reduction is not NH _ 4 ~. In a word, the phenomenon of NH4- and SO4-) synchronous transformation observed in the experiment is the result of their independent transformation. In addition, based on the conclusion of this paper, through the in-depth analysis of the literature data of various researchers, it is found that the N / P S generally higher than the theoretical value reflects the phenomenon of excessive transformation of exogenous electron receptors entering into the system of NH _ 4 ~ and independent transformation of SRAO process in the routine Anammox stage. The start-up time and the doubling time of conversion rate, thermodynamic analysis and demonstration prove that the synchronous transformation of NH4 ~ and SO4 / 2) observed in the literature may not be the reaction between them. Combined with this study and literature analysis, it can be inferred that the NH4 ~ of SRAO transformed by SRAO in this experiment and related literature is mainly the heterotrophic reduction of organic matter released by microorganism, which is consumed in the process of oxidizing SRAO by O _ 2 and its oxidation product no ~ (-). At the same time, no _ 2-/ no _ 3s, the oxidation product of NH _ 4 ~, and probably S _ 2-, the reducing product of S _ 2-, were produced by sulfur autotrophic denitrification to form S _ 0 / S _ 4 / S _ 4 / S _ 4 / S _ 2. Moreover, the literature analysis and theoretical calculation prove that the mechanism of matrix transformation in this paper is consistent with the actual experimental phenomenon, which can explain the problems and doubts in the experiments of various researchers.
【學(xué)位授予單位】：蘇州科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X703

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李軍;向韜;鄭馳駿;;HABR反應(yīng)器硫酸鹽型厭氧氨氧化啟動(dòng)特性研究[J];工業(yè)水處理;2016年11期

2 李軍;向韜;鄭馳駿;;以SRB顆粒污泥為載體的硫酸鹽型厭氧氨氧化的啟動(dòng)研究[J];安全與環(huán)境學(xué)報(bào);2016年04期

3 蔣永榮;秦永麗;劉可慧;;粉煤灰對(duì)硫酸鹽型厭氧氨氧化馴化過程的影響[J];生態(tài)環(huán)境學(xué)報(bào);2016年08期

4 周健;完顏德卿;黃勇;劉忻;袁怡;李祥;姚鵬程;楊朋兵;薛鵬程;;ANAMMOX菌利用零價(jià)鐵還原硝酸鹽脫氮研究[J];環(huán)境科學(xué);2016年11期

5 秦永麗;蔣永榮;劉成良;劉可慧;黎海清;劉遠(yuǎn)志;王昭;郭丹妮;陸冬云;孫振舉;盧青青;李良劍;;硫酸鹽型厭氧氨氧化反應(yīng)器的啟動(dòng)特性[J];環(huán)境工程學(xué)報(bào);2015年12期

6 周健;黃勇;袁怡;劉忻;李祥;沈杰;楊朋兵;;ANAMMOX菌利用零價(jià)鐵轉(zhuǎn)化氨和硝酸鹽實(shí)驗(yàn)[J];環(huán)境科學(xué);2015年12期

7 馬文娟;趙東風(fēng);劉春爽;劉思瑤;;pH值促進(jìn)硫酸鹽型厭氧氨氧化的快速啟動(dòng)[J];化學(xué)與生物工程;2015年10期

8 劉正川;袁林江;周國(guó)標(biāo);李晶;;從亞硝酸還原厭氧氨氧化轉(zhuǎn)變?yōu)榱蛩猁}型厭氧氨氧化[J];環(huán)境科學(xué);2015年09期

9 張正哲;金仁村;程雅菲;周煜璜;布阿依·謝姆古麗;;厭氧氨氧化工藝的應(yīng)用進(jìn)展[J];化工進(jìn)展;2015年05期

10 劉福鑫;黃勇;袁怡;李祥;張春蕾;張麗;;厭氧硫酸鹽還原-氨氧化的研究[J];環(huán)境工程學(xué)報(bào);2015年02期

，

本文編號(hào)：1901756