本文關(guān)鍵詞： 厭氧生物反應(yīng)器填埋場 準(zhǔn)好氧生物反應(yīng)器填埋場 好氧生物反應(yīng)器填埋場 氮轉(zhuǎn)化 降解動力學(xué)　出處：《西南交通大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：垃圾填埋依然是目前城市生活垃圾處理與處置的主要方式,但是其氮污染問題是滲濾液處理工程面臨的主要難題之一。根據(jù)填埋體氧分壓不同,可將生物反應(yīng)器填埋場分為厭氧生物反應(yīng)器填埋場(UABL)、準(zhǔn)好氧生物反應(yīng)器填埋場(SABL)和好氧生物反應(yīng)器填埋場(ABL)三種。該三種填埋體中由于微生物群落結(jié)構(gòu)差異較大,其氮污染物的降解速率、轉(zhuǎn)化途徑以及去除效率等均有所差異,為此,本文基于室內(nèi)模擬實(shí)驗(yàn),建立UABL、SABL和ABL3個(gè)模擬生物反應(yīng)器填埋場,并分別對其氮污染物的轉(zhuǎn)化特性進(jìn)行分析,為今后填埋場氮污染的去除提供一定的實(shí)驗(yàn)參數(shù)和技術(shù)參考。研究表明:實(shí)驗(yàn)運(yùn)行300d后,UABL柱仍處于產(chǎn)酸階段,SABL和ABL柱已基本趨于穩(wěn)定。通過對各監(jiān)測指標(biāo)降解動力學(xué)分析表明,UABL、SABL和ABL柱滲濾液CODCr的去除分別符合對數(shù)-指數(shù)復(fù)合模型、線性-指數(shù)復(fù)合模型、線性-指數(shù)復(fù)合模型,去除速率分別為0.01232 d-1、0.02795 d-1、0.0392 d-1;VFA的去除分別符合對數(shù)-指數(shù)復(fù)合模型、對數(shù)-指數(shù)復(fù)合模型、線性-指數(shù)復(fù)合模型,去除速率分別為0.00544d-1、0.03018d-1、0.03225d-1;總氮和氨氮去除分別符合對數(shù)-指數(shù)復(fù)合模型、線性-指數(shù)復(fù)合模型、線性-指數(shù)復(fù)合模型,其中總氮的去除速率分別為0.00459d-1、0.01142d-1、0.0206d-1,氨氮的去除速率分別為0.00389d-1、0.0099d-1、0.0188d-1。各指標(biāo)的降解動力學(xué)表明不同類型生物反應(yīng)器填埋場的穩(wěn)定化進(jìn)程為:UABLSABLABL。另外,三維熒光分析和元素分析也表明ABL柱的腐殖化程度最好,SABL柱的腐殖化程度次之,UABL柱的腐殖化程度最差。各指標(biāo)相關(guān)性分析表明,UABL、SABL和ABL柱滲濾液中氮類指標(biāo)與有機(jī)物指標(biāo)均大部分線性相關(guān),且各填埋柱滲濾液總氮與氨氮均為高度線性相關(guān),表明該三種填埋場滲濾液中主要氮污染物均為氨氮,氨氮變化趨勢左右著總氮的變化趨勢,所以兩者表現(xiàn)為同步增減。實(shí)驗(yàn)結(jié)束時(shí),UABL、SABL和ABL柱固相總氮剩余率分別為86.96%、80.38%、63.98%,總氮液化率分別為0.71%、0.18%、0.17%,總氮?dú)饣史謩e為12.33%、19.43%、35.84%,表明SABL柱脫氮率為UABL柱的1.57倍,ABL柱脫氮率為SABL柱的1.84倍。又由于N20排放通量為SABLABLUABL,表明SABL不利于溫室氣體(N20)的減排。另外,UABL、SABL和ABL垃圾中氮的原子數(shù)百分比分別為2.58%、2.37%、1.99%,表明垃圾穩(wěn)定化程度越好,垃圾氮含量越低,其氮的轉(zhuǎn)化程度越高。
[Abstract]:Landfill is still the main way to treat and dispose of municipal solid waste, but nitrogen pollution is one of the main problems in leachate treatment. The bioreactor landfill can be divided into three types: UABL (anaerobic bioreactor landfill), SABL (pseudo aerobic bioreactor landfill) and ABL (aerobic bioreactor landfill). The degradation rate, transformation pathway and removal efficiency of nitrogen pollutants are different. Therefore, based on the laboratory simulation experiments, a series of simulated bioreactor landfills (UABL / SABL and ABL3) were established. The transformation characteristics of nitrogen pollutants were analyzed respectively. This paper provides some experimental parameters and technical references for the removal of nitrogen pollution in landfill site. The results show that the UABL column is still in the acid producing stage and the ABL column is stable after 300 days of operation. The mechanical analysis shows that the removal of CODCr from UABL SABL and ABL column leachate accords with logarithmic exponential composite model, respectively. The removal rate of VFA is 0.01232 d ~ (-1) ~ 0.02795 d ~ (-1) ~ (-1) ~ 0.0392 ~ (-1) d ~ (-1) ~ (-1) respectively. The removal rate of VFA is in accordance with logarithmic exponential model, logarithmic exponential compound model and linear exponential compound model, respectively. The removal rates of total nitrogen and ammonia nitrogen were 0.00544d-1N 0.03018d-1 0.03225d-1.The removal rates of total nitrogen and ammonia nitrogen were in accordance with logarithmic exponential compound model, linear exponential composite model, linear exponential compound model, respectively. The removal rate of total nitrogen was 0.00459d-1 / 0.01142d-1n 0.0206 d ~ (-1), respectively, and the removal rate of ammonia nitrogen was 0.00389d-1n 0.0099d-1n 0.0188d-1.The degradation kinetics of each index indicated that the stabilization process of different types of bioreactor landfills was as follows: UABL SABLABLL. Three-dimensional fluorescence analysis and elemental analysis also showed that the humification degree of ABL column was the best. The humification degree of ABL column was the lowest, and the correlation analysis of each index showed that the nitrogen index and organic content in the leachate of ABL column and UABL column leachate were the best. Most of the physical indexes were linearly correlated, The results showed that the main nitrogen pollutants in the landfill leachate were all ammonia nitrogen, and the change trend of ammonia nitrogen affected the change trend of total nitrogen. At the end of the experiment, the residual rate of solid phase total nitrogen was 86.96 and 80.38 and 63.98, respectively. The liquefaction rate of total nitrogen was 0.71 0.18 and 0.17, respectively, and the total nitrogen conversion rate was 12.33 and 19.4335.844.The results showed that the nitrogen removal rate of SABL column was 1.57 times that of UABL column and the denitrification rate of SABL column was 1.57 times that of UABL column. Because the emission flux of N20 is SABLABLUABL, which indicates that SABL is not conducive to the emission reduction of greenhouse gas N20. In addition, the percentage of nitrogen atoms in SABL and ABL garbage is 2.58 and 2.37, respectively, indicating that the better the stabilization level of MSW is, The lower the nitrogen content, the higher the nitrogen conversion degree.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X799.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張歡歡;王亞楠;孫英杰;吳昊;姜海鈺;卞榮星;;準(zhǔn)好氧填埋場氮素形態(tài)變化及轉(zhuǎn)化特性研究[J];青島理工大學(xué)學(xué)報(bào);2014年01期

2 張超平;馮勇;羅鵬;;生物反應(yīng)器填埋場的發(fā)展及應(yīng)用研究[J];環(huán)境工程;2012年01期

3 張正安;屈明;許澤宏;賀勝英;;不同結(jié)構(gòu)填埋場的環(huán)境污染分析[J];安徽農(nóng)業(yè)科學(xué);2009年09期

4 霍守亮;席北斗;樊石磊;劉鴻亮;張蕾;蘇婧;呂擰;;生物反應(yīng)器填埋場有機(jī)物變化模型研究[J];環(huán)境科學(xué)研究;2007年05期

5 劉秀紅;楊慶;吳昌永;彭永臻;周利;尚會來;;不同污水生物脫氮工藝中N_2O釋放量及影響因素[J];環(huán)境科學(xué)學(xué)報(bào);2006年12期

6 劉丹;李啟彬;;垃圾滲濾液處理的新思路——生物反應(yīng)器填埋場技術(shù)的應(yīng)用[J];西南交通大學(xué)學(xué)報(bào);2005年06期

7 黃啟飛,劉玉強(qiáng),董路,王琪,劉國潯;滲濾液回流對準(zhǔn)好氧填埋產(chǎn)氣過程影響研究[J];環(huán)境工程;2005年05期

8 李兵,董志穎,趙勇勝,趙由才,牛冬杰;2種MSW好氧生物反應(yīng)器型填埋方式的對比實(shí)驗(yàn)[J];環(huán)境科學(xué);2005年03期

9 于曉華,何品晶,邵立明,李國建;填埋層空氣狀況對滲濾液中氮成分變化的影響[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2004年06期

10 何若,沈東升,朱蔭湄;生物反應(yīng)器填埋場處理生活垃圾的研究進(jìn)展[J];浙江大學(xué)學(xué)報(bào)(農(nóng)業(yè)與生命科學(xué)版);2004年03期

，

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