本文選題：空化撞擊流 + 煤制氣廢水　； 參考：《沈陽(yáng)工業(yè)大學(xué)》2015年碩士論文

【摘要】：近幾年來(lái)，隨著我國(guó)工業(yè)化發(fā)展的腳步日益向前邁進(jìn)，在如此蓬勃的發(fā)展時(shí)期也帶來(lái)了一些不可避免的麻煩。例如工業(yè)廢水的排放量呈現(xiàn)每年增長(zhǎng)的趨勢(shì)，且水質(zhì)污染趨于多樣化，含有高濃度有機(jī)廢水的污染源也日益增多。煤制氣廢水作為一種典型的多毒，高污染，難生化降解的煤化工廢水，，已經(jīng)在水污染領(lǐng)域成為了亟待解決的問(wèn)題。目前煤制氣廢水的處理方法為三大塊：預(yù)處理，生化處理和深度氧化處理，這些方法在單一使用的時(shí)候都會(huì)存在不同程度的缺陷。 本文選擇鐵碳微電解法對(duì)煤制氣廢水進(jìn)行處理，為了解決微電解法在實(shí)驗(yàn)過(guò)程中的一些致命缺陷，本文引用了一種新的反應(yīng)器即空化撞擊流反應(yīng)器來(lái)作為鐵碳微電解的反應(yīng)器，進(jìn)行了空化撞擊流微電解處理煤制氣廢水的研究。研究主要分為兩個(gè)部分，一部分為反應(yīng)機(jī)理的研究；另外是實(shí)驗(yàn)研究部分。 首先通過(guò)對(duì)高濃度有機(jī)廢水的現(xiàn)狀和處理方法進(jìn)行了分析和總結(jié)，選用其中一種高COD，難降解的煤制氣廢水進(jìn)行本課題的實(shí)驗(yàn)研究。并且對(duì)鐵碳微電解，空化效應(yīng)，撞擊流，空化撞擊流在處理廢水的機(jī)理上進(jìn)行了深入研究，分別從煤制氣廢水的性質(zhì)和處理方法、鐵碳微電解處理廢水的特點(diǎn)和機(jī)理、空化撞擊流反應(yīng)設(shè)備的構(gòu)造和原理等幾個(gè)方面考察了空化撞擊流微電解法處理廢水的可行性，從而構(gòu)思并設(shè)計(jì)了實(shí)驗(yàn)方案。 此外，我們進(jìn)行了空化撞擊流微電解法對(duì)煤制氣廢水的實(shí)驗(yàn)研究。通過(guò)考察不同反應(yīng)時(shí)間、Fe/C、pH值時(shí)煤制氣廢水被處理后COD、色度和氨氮去除率的變化，最終確定反應(yīng)最佳條件，在最佳反應(yīng)條件下進(jìn)行空化撞擊流微電解反應(yīng)�？疾毂脡毫�(duì)反應(yīng)結(jié)果的影響，當(dāng)?shù)贸鲎顑?yōu)結(jié)果之后與傳統(tǒng)微電解最優(yōu)結(jié)果進(jìn)行對(duì)比，通過(guò)對(duì)比實(shí)驗(yàn)可以驗(yàn)證空化撞擊流微電解法在處理煤制氣廢水中的絕對(duì)優(yōu)勢(shì)。分析實(shí)驗(yàn)結(jié)果發(fā)現(xiàn)：同樣條件下空化撞擊流微電解比傳統(tǒng)微電解法在COD去除率上由88%提高到89%，色度去除率由75%提高到79%，氨氮去除率由50.2%提高到51.8%。于此同時(shí)，化學(xué)反應(yīng)速率也提高了14.11%。 本課題通過(guò)實(shí)驗(yàn)和機(jī)理的研究最終驗(yàn)證了空化撞擊流微電解反應(yīng)的可行性，也證明了撞擊流耦合空化反應(yīng)器應(yīng)用在微電解反應(yīng)上能夠更高效更徹底的處理煤制氣廢水。
[Abstract]:In recent years, with the development of industrialization in our country, it has brought some inevitable troubles. For example, the discharge of industrial wastewater is increasing every year, and the water pollution tends to be diversified, and the pollution source containing high concentration organic wastewater is increasing day by day. Coal gasification wastewater, as a typical multi-toxic, high-pollution, difficult biodegradable coal chemical wastewater, has become an urgent problem in the field of water pollution. At present, there are three major treatment methods for coal gasification wastewater: pretreatment, biochemical treatment and advanced oxidation treatment. In this paper, iron-carbon micro-electrolysis method is selected to treat coal gasification wastewater. In order to solve some fatal defects of micro-electrolysis process, a new reactor, cavitation impinging current reactor, is used as a reactor for iron-carbon micro-electrolysis. The treatment of coal gas wastewater by cavitation impinging flow microelectrolysis was studied. The research is mainly divided into two parts, one is the study of reaction mechanism, the other is experimental study. Firstly, the present situation and treatment methods of high concentration organic wastewater were analyzed and summarized. The mechanism of iron and carbon micro-electrolysis, cavitation effect, impingement flow and cavitation impaction flow in treating wastewater was studied. The characteristics and mechanism of iron and carbon micro-electrolysis treatment wastewater were analyzed from the characteristics and treatment methods of coal gasification wastewater, respectively. The structure and principle of cavitation impinging flow reaction equipment were studied in this paper. The feasibility of cavitation impinging stream micro-electrolysis for wastewater treatment was investigated, and the experimental scheme was designed. In addition, an experimental study on coal gasification wastewater by cavitation impinging flow microelectrolysis was carried out. By investigating the change of COD, chromaticity and ammonia nitrogen removal rate after coal gasification wastewater was treated at different reaction time and pH value, the optimum reaction conditions were determined, and cavitation impinging flow micro-electrolysis reaction was carried out under the optimum reaction conditions. The effect of pump pressure on the reaction results was investigated and the results were compared with those of traditional micro-electrolysis. The absolute superiority of cavitation impinging current micro-electrolysis in treating coal gasification wastewater could be verified by comparative experiments. The experimental results show that the removal rate of COD is increased from 88% to 89%, the removal rate of chromaticity is increased from 75% to 79%, and the removal rate of ammonia nitrogen is increased from 50.2% to 51.8% under the same conditions. At the same time, the chemical reaction rate also increased by 14.11%. The feasibility of cavitation impinging flow micro-electrolysis reaction is finally verified by experiments and mechanism studies. It is also proved that impinging flow coupled cavitation reactor can treat coal gas wastewater more efficiently and thoroughly in micro-electrolysis reaction.
【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X703

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