本文選題：煤加壓氣化廢水　切入點(diǎn)：磁性樹脂　出處：《昆明理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：中國是一個(gè)“富煤、少油、有氣”的國家,總煤炭儲備達(dá)1145億噸,且分布廣泛,品種齊全,而其中褐煤現(xiàn)占很大比例。褐煤存在熱值低、濕度大、燃點(diǎn)低和二氧化碳排放量大等缺點(diǎn),所以采用煤加壓氣化工藝制取煤氣能有效緩解現(xiàn)在的能源緊張問題,尤其是魯奇加壓氣化工藝。但煤加壓氣化工藝會產(chǎn)生大量的煤加壓氣化廢水,廢水水質(zhì)復(fù)雜、氨氮高、酚含量大、COD高、可生化性差、毒性高、色度大,屬典型的難降解有機(jī)工業(yè)廢水。其中的多環(huán)芳烴、酚、氨氮會對人體及環(huán)境造成嚴(yán)重危害。所以近年來煤氣化工藝中產(chǎn)生的廢水又成為制約煤氣化工藝發(fā)展的一個(gè)瓶頸。因此,找到一種高效經(jīng)濟(jì)的處理方法對社會、環(huán)境和經(jīng)濟(jì)都具有十分重要的意義。與傳統(tǒng)樹脂相比,磁性樹脂具有粒徑更小,傳質(zhì)更快,易分離,不易隨水流失,不僅有離子交換作用,還有氫鍵作用、π-π作用、陽離子-π作用等優(yōu)點(diǎn),近年來越來越多的學(xué)者致力于磁性樹脂的開發(fā)與研究,但目前的學(xué)者的研究都是應(yīng)用于低濃度水體中大分子污染物的去除,基于磁性樹脂的優(yōu)點(diǎn),其對高濃度水體中大分子污染物的去除也應(yīng)具有較大的潛力,本研究就是探索磁性樹脂在高濃度水體中的應(yīng)用潛力。本研究選用南京大學(xué)自主開發(fā)研制的磁性樹脂NDMP對實(shí)際廢水中的主要有機(jī)物及發(fā)色物質(zhì)的吸附機(jī)理進(jìn)行研究,以及對實(shí)際廢水的處理情況的研究。理論試驗(yàn)結(jié)果表明,NDMP樹脂對苯酚、間甲酚、喹啉、吡啶的吸附基本在5min內(nèi)達(dá)到吸附平衡,對于鐵氰化鉀的平衡吸附時(shí)間為10min；這五種物質(zhì)更適于使用Freundlich模型進(jìn)行描述；pH對苯酚和間甲酚的影響較大,但對喹啉和吡啶幾乎無影響,對鐵氰化鉀的影響較�。槐椒�、間甲酚、喹啉、吡啶物間存在著競爭吸附；NDMP樹脂對鐵氰化鉀溶液的脫色性能良好；不同再生液對NDMP樹脂的再生效果差異較大,其中1%NaCl混合1%NaOH的再生效果最好。實(shí)際廢水的試驗(yàn)表明：NDMP樹脂對煤加壓氣化廢水的COD有較好的去除效果,pH對其影響較大,去除率呈先增后降的趨勢,在pH=10時(shí)達(dá)到最大；NDMP樹脂的投加量和吸附時(shí)間與COD去除量成正比；NDMP樹脂既能吸附廢水中小分子物質(zhì),也能有效去除廢水中大分子物質(zhì)；NDMP樹脂對廢水色度的去除效果顯著,對于實(shí)際廢水,其色度能從3200降到400,對于經(jīng)5000D超濾膜處理的廢水,其色度能降到64；對于處理煤加壓氣化廢水,NDMP樹脂有較好的穩(wěn)定性,且對廢水COD的去除量較大,對廢水COD的平均去除量為2845mg/L。
[Abstract]:Chinese is a rich coal, less oil and gas "countries, the total coal reserves of 1145 tons, and widely distributed, complete varieties, which accounted for a large proportion. The lignite lignite has low calorific value, high humidity, low ignition and disadvantages of carbon dioxide emissions is large, so the use of coal gasification process the gas can effectively alleviate the energy shortage problem now, especially the Lurgi gasification process. But coal gasification of coal gasification process will produce large amounts of waste water, waste water complex, high ammonia, phenol content, high COD, poor biodegradability and high toxicity, high colority, belong to typical refractory organic industrial wastewater. Polycyclic aromatic hydrocarbons, phenol, ammonia will cause serious harm to human health and environment. So the wastewater produced in recent years coal gasification process has become a bottleneck restricting the development of coal gasification process. Therefore, to find an efficient and economical treatment Law of society, have very important sense of environment and economy. Compared with the traditional magnetic resin, resin has a smaller size, faster mass transfer, easy separation, not with the loss of water, not only has the effect of ion exchange, and hydrogen bonding interaction, Cation-n effect and other advantages, research and development more and more scholars committed to magnetic resins in recent years, but the current research scholars are applied to the removal of macromolecules in low concentration of pollutants in water, the advantages of magnetic resin based on the molecular high concentration of pollutants in water removal should also have greater potential, this study is to explore the potential application of magnetic resin in high concentration in water. The adsorption mechanism of Nanjing University developed magnetic resin NDMP developed on the main organic wastewater and chromogenic substances were studied, and the treatment of actual wastewater The study of theory. Experimental results show that the NDMP resin for phenol, m-cresol, quinoline, pyridine adsorption in 5min reached adsorption equilibrium, the equilibrium adsorption time of potassium ferricyanide was 10min; the five material is more suitable for the use of Freundlich model is described; the effect of pH on phenol and m-cresol is larger, but the quinoline and pyridine had almost no effect, little influence on potassium ferricyanide; phenol, m-cresol, quinoline, pyridine compounds exist in competitive adsorption; decolorization of NDMP resin on the potassium ferricyanide solution is good; the difference regeneration effects of different regeneration liquid on NDMP resin is larger, the best regeneration effect of 1%NaCl hybrid 1%NaOH shows that the test. The actual wastewater: NDMP resin for coal gasification wastewater COD has a good removal effect, pH has great influence on the removal rate was first increased and then decreased, reached the maximum at pH=10; NDMP tree Lipid dosage and adsorption time and COD removal is proportional to the amount; NDMP resin can adsorb wastewater of small molecular substances, can effectively remove macromolecular substances in wastewater; removal of chroma of NDMP resin significantly, for the actual wastewater, the color can be reduced from 3200 to 400, the waste water by 5000D super membrane treatment, the color can be reduced to 64; for the treatment of coal gasification wastewater, NDMP resin has good stability, and the removal rate of wastewater COD is larger, the average COD removal amount of wastewater is 2845mg/L.

【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X784

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