【摘要】：隨著養(yǎng)殖產(chǎn)業(yè)的規(guī)�；⒓谢l(fā)展,養(yǎng)殖產(chǎn)業(yè)產(chǎn)生的糞便和污水以其大水量、高污染物濃度等特點成為環(huán)境污染的重要關(guān)注點之一。規(guī)�；B(yǎng)殖已成為了農(nóng)村面源污染的主要來源。而FMBR作為一種新型技術(shù),具有工藝簡單、同步脫氮、有機污泥近零排放、節(jié)能高效、出水可回用等優(yōu)點,同時結(jié)合遠程監(jiān)控新模式正在污水處理技術(shù)中顯現(xiàn)成效。FMBR技術(shù)應(yīng)用于畜禽養(yǎng)殖廢水的實例也越來越多。本文研究FMBR技術(shù)處理簡單預(yù)處理后的高濃度畜禽養(yǎng)殖廢水工程。通過對工程現(xiàn)場進行啟動調(diào)試探討FMBR工藝實現(xiàn)同步硝化反硝化的條件,并進一步研究SND過程的影響因素。利用中試實驗對FMBR反應(yīng)器內(nèi)SND過程建立動力學(xué)模型。并對SND過程N2O釋放的機理進行了初步分析。取得的主要研究結(jié)論如下:(1)FMBR工藝對畜禽養(yǎng)殖廢水具有很好的處理效果,形成的高濃度污泥能適應(yīng)高濃度廢水并對COD有穩(wěn)定良好的處理效果。但在處理高濃度氨氮、總氮和總磷方面有所欠缺,處理效果受溫度影響,啟動初期受低溫影響相應(yīng)微生物生長緩慢,處理效果差。(2)控制溶解氧濃度在在0.3mg/L到1.0mg/L范圍內(nèi)時FMBR工藝成功實現(xiàn)SND工藝脫氮,SND過程中COD去除率基本保持不變略有下降,可達到93%左右,NH4+—N的去除率在75%左右,同時NO2-—N沒有明顯積累接近于零,NO3-—N濃度明顯降低,從32.45mg/L下降到1.28mg/L左右。TN的去除率也隨之升高,去除率可達到78%左右。HRT控制在14h左右能在保證處理效果的前提下保證工藝的經(jīng)濟性。(3)在硝化反應(yīng)與反硝化反應(yīng)動力學(xué)方程基礎(chǔ)上,依照物料平衡方程對FMBR反應(yīng)器內(nèi)SND過程進行了動力學(xué)推導(dǎo)。經(jīng)過實驗數(shù)據(jù)分析,求出了SND動力學(xué)模型的參數(shù)推導(dǎo)求得動力學(xué)模型常數(shù)C1值為-1.58,C2值為-0.84,KM值為0.42,建立動力學(xué)方程。(4)FMBR工藝SND過程中N2O釋放來自不同微生物的生化反應(yīng),多種酶的復(fù)雜作用產(chǎn)生N2O釋放,純化學(xué)反應(yīng)產(chǎn)生的N2O量可忽略。N2O釋放的主要來源是氨氧化細菌反硝化過程,該過程以亞硝酸鹽為底物,不完全反硝化形成中間產(chǎn)物N2O釋放,因此亞硝酸鹽生成速度成為N2O釋放的重要控制因素。
[Abstract]:With the development of scale and concentration of aquaculture industry, feces and sewage produced by aquaculture industry have become one of the important concerns of environmental pollution due to its characteristics of large amount of water and high concentration of pollutants. Scale aquaculture has become the main source of rural non-point source pollution. As a new technology, FMBR has the advantages of simple process, simultaneous denitrification, near-zero discharge of organic sludge, energy saving and high efficiency, reuse of effluent, etc. At the same time, the application of FMBR technology in livestock and poultry wastewater is more and more. In this paper, the treatment of high concentration livestock and poultry wastewater with simple pretreatment by FMBR technology was studied. The conditions of simultaneous nitrification and denitrification by FMBR process were discussed by starting and debugging the project site, and the influencing factors of SND process were further studied. The kinetic model of SND process in FMBR reactor was established by pilot-scale experiment. The mechanism of N 2 O release from SND process was analyzed. The main conclusions are as follows: (1) the FMBR process has a good treatment effect on livestock and poultry wastewater, and the high concentration sludge can adapt to the high concentration wastewater and has a stable and good treatment effect on COD. However, in the treatment of high concentration ammonia nitrogen, total nitrogen and total phosphorus, the effect of treatment was affected by temperature, and the microorganism grew slowly at the early stage of start-up affected by low temperature. (2) when the concentration of dissolved oxygen was controlled in the range of 0.3mg/L to 1.0mg/L, the denitrification of SND process was successfully realized by FMBR process, and the removal rate of COD remained unchanged slightly during SND process, reaching about 93%. The removal rate of NH4 N was about 75%, and the NO2--N accumulation was not close to zero, the concentration of NO3--N decreased obviously, from 32.45mg/L to 1.28mg/L, the removal rate of TN also increased. The removal rate can reach about 78%. The control of HRT for about 14 h can ensure the economy of the process under the premise of ensuring the treatment effect. (3) based on the kinetic equations of nitrification and denitrification, The kinetic derivation of SND process in FMBR reactor was carried out according to the mass balance equation. Through the analysis of experimental data, the parameter derivation of SND kinetic model is obtained. The kinetic model constant C1 value is -1.58% C _ 2 value is -0.84 KM value is 0.42, and the kinetic model constant C _ 1 value is -1.58% KM value is -0.42%. The kinetics equation was established. (4) the release of N2O from different microbes in the SND process of FMBR process resulted from the complex action of many enzymes, which resulted in the release of N2O. The main source of N2O release is denitrification process of ammoniacal oxidizing bacteria, in which nitrite is used as substrate and the intermediate product N2O is released by incomplete denitrification. Therefore, nitrite production rate has become an important control factor for N 2 O release.
【學(xué)位授予單位】：南昌大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：X713

【參考文獻】

相關(guān)期刊論文 前10條

1 魏鈺澎;;MBR膜法在醫(yī)院污水處理中的應(yīng)用[J];中國醫(yī)院建筑與裝備;2016年01期

2 杜昱;李曉尚;孫月馳;張亞琳;湯萌萌;;二級厭氧+厭氧氨氧化+MBR工藝處理垃圾焚燒廠滲濾液探討[J];給水排水;2016年01期

3 魏思佳;;厭氧氨氧化與反硝化耦合反應(yīng)的研究[J];科技視界;2016年01期

4 周鵬;;電致三維三相流化氧化+水解酸化+MBR處理火工藥劑生產(chǎn)廢水的工程實踐[J];資源節(jié)約與環(huán)保;2015年12期

5 陳重軍;王建芳;張海芹;沈耀良;;厭氧氨氧化污水處理工藝及其實際應(yīng)用研究進展[J];生態(tài)環(huán)境學(xué)報;2014年03期

6 劉子劍;;短程硝化反硝化生物脫氮技術(shù)的影響因素及工程應(yīng)用[J];吉林水利;2013年05期

7 黃孝肖;陳重軍;張蕊;陳英旭;吳偉祥;;厭氧氨氧化與反硝化耦合反應(yīng)研究進展[J];應(yīng)用生態(tài)學(xué)報;2012年03期

8 尹倩婷;李平;吳錦華;王向德;;同步硝化反硝化(SND)過程污泥聚集狀態(tài)對N_2O釋放的影響[J];環(huán)境科學(xué);2011年07期

9 章祖良;;MBR膜生物反應(yīng)器在污水處理中的發(fā)展及應(yīng)用[J];科技資訊;2011年04期

10 季麗麗;楊朝暉;徐崢勇;李小江;唐志剛;鄧久華;;控制游離氨實現(xiàn)單級自養(yǎng)生物脫氮的研究[J];環(huán)境科學(xué);2011年01期

相關(guān)博士學(xué)位論文 前1條

1 賈文林;同步硝化反硝化過程中N_2O釋放特征及其機理研究[D];山東大學(xué);2013年

相關(guān)碩士學(xué)位論文 前3條

1 郝兵兵;MBR處理水產(chǎn)養(yǎng)殖廢水體系中微生物研究[D];上海海洋大學(xué);2015年

2 王建文;SBR工藝中同步硝化反硝化影響因素及動力學(xué)模型研究[D];長安大學(xué);2013年

3 趙海燕;序批式反應(yīng)器同步硝化反硝化處理生活污水試驗研究[D];長安大學(xué);2009年

，

本文編號：2393595