發(fā)布時(shí)間：2018-05-26 09:29

  本文選題：氧化鎂濕法脫硫 + 脫硫廢液��； 參考：《大連海事大學(xué)》2015年碩士論文

【摘要】：氧化鎂濕法煙氣脫硫技術(shù)在國(guó)內(nèi)經(jīng)過(guò)十多年的研究和發(fā)展,其技術(shù)的可靠性、建造和運(yùn)行的經(jīng)濟(jì)性以及可行性已獲得了廣泛認(rèn)同。氧化鎂濕法煙氣脫硫工藝是一種使用氧化鎂作為脫硫劑,吸收二氧化硫生成亞硫酸鎂和少量硫酸鎂漿液的濕法脫硫技術(shù),其關(guān)鍵環(huán)節(jié)為脫硫過(guò)程中廢水的排放以及其凈化處理。鎂基-海水法船舶煙氣脫硫(Magnesium Base-seawater Marine Flue Gas Desulfurization, MS FGD)以鎂法為脫硫主體,以海水法為輔助。廢液中含有大量的氮氧化物、硫氧化物和重金屬化合物等,具有鹽濃度高、化學(xué)需氧量高以及可生化性差等特點(diǎn)。氨氮以及重金屬化合物作為水體主要污染物應(yīng)得到廣泛重視,因而鎂基-海水法船舶煙氣脫硫廢液中氨氮以及重金屬去除方法研究具有重要意義。本文對(duì)MS FGD廢液中氨氮、硝酸鹽、亞硝酸鹽、硫酸鹽、亞硫酸鹽、鈣、鎂離子、氯離子、化學(xué)需氧量、重金屬、色度和濁度進(jìn)行了分析測(cè)定；篩選高效脫氮菌株,利用同步硝化反硝化技術(shù)對(duì)MS FGD廢液進(jìn)行生物脫氮；考察單元處理方法對(duì)MS FGD廢液中重金屬去除效果,著重考察微生物絮凝劑對(duì)MS FGD廢液中重金屬去除效果,利用短小芽孢桿菌發(fā)酵合成γ-聚谷氨酸(poly-y-glutamic acid, y-PGA)作為重金屬去除劑；對(duì)MS FGD廢液進(jìn)行綜合處理。綜合處理后MS FGD廢液中NH3-N由最初的604.00 mg/L降低到12.00 mg/L；NO2--N由最初的16.09 mg/L降低到1.04 mg/L；NO3-N由最初的196.12 mg/L降低到0.32 mg/L；重金屬Zn2+、Cr3+、V5+、Cd2+、Pb2+、Ni2+,分別由最初的0.26、0.34、8.28、0.87、2.54、101.67 mg/L降低到0.06、未檢出、1.04、0.05、0.42、11.39mg/L。為適合于船舶燃油煙氣氧化鎂濕法脫硫廢液生物凈化處理研究提供技術(shù)方法。
[Abstract]:The magnesium oxide wet flue gas desulfurization technology has been studied and developed in China for more than ten years. The reliability of the technology, the economy of construction and operation and the feasibility have been widely recognized. Magnesium oxide wet flue gas desulfurization process is a wet desulphurization technology which uses magnesium oxide as desulfurizer to absorb sulfur dioxide to form magnesium sulfite and a small amount of magnesium sulfate slurry. The key link of this technology is the discharge of wastewater and its purification and treatment in the process of desulfurization. Magnesium Base-seawater Marine Flue Gas Desulfurization, MS FGD) with magnesium base-seawater method as the main body of desulfurization and sea water method as auxiliary. The waste liquid contains a large number of nitrogen oxides, sulfur oxides and heavy metal compounds, which has the characteristics of high salt concentration, high chemical oxygen demand and poor biodegradability. Ammonia nitrogen and heavy metal compounds should be paid more attention to as the main pollutants in water body, so it is of great significance to study the removal methods of ammonia nitrogen and heavy metals in the waste liquor of marine flue gas desulfurization by magnesium base and seawater method. Ammonia nitrogen, nitrate, nitrite, sulfate, sulfite, calcium, magnesium ion, chloride ion, chemical oxygen demand, heavy metal, chroma and turbidity in MS FGD waste liquor were analyzed and determined. Simultaneous nitrification and denitrification were used to remove nitrogen from MS FGD waste liquor, and the removal effect of heavy metals in MS FGD waste liquor by unit treatment was investigated, and the removal effect of microbial flocculant on heavy metal removal from MS FGD waste liquor was studied. 緯 -poly-glutamic acid (y-PGA) was synthesized by Bacillus pumilus fermentation as a heavy metal remover, and MS FGD waste liquor was treated synthetically. After comprehensive treatment, the NH3-N of MS FGD waste liquor decreased from 604.00 mg/L to 12.00 mg / L no 2--N from 16.09 mg/L to 1.04 mg / L no 3-N from 196.12 mg/L to 0.32 mg / L, and the heavy metal Zn2 Cr 3 / V 5 and CD 2 Pb 2 Ni 2 decreased from 0.26 mg / L 0.34 mg / L 8.280.87U 2.54101.67 mg/L to 0.06, respectively. This paper provides a technical method for biological purification of waste liquid from wet desulfurization of ship fuel gas with magnesium oxide.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X736.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 羅固源,楊紅薇;NBIAS系統(tǒng)中的好氧反硝化[J];重慶環(huán)境科學(xué);2001年01期

2 張小玲,李斌,楊永哲,王磊,王志盈;低DO下的短程硝化及同步硝化反硝化[J];中國(guó)給水排水;2004年05期

3 郭燕妮;方增坤;胡杰華;謝洪珍;李黎婷;葉志勇;;化學(xué)沉淀法處理含重金屬?gòu)U水的研究進(jìn)展[J];工業(yè)水處理;2011年12期

4 魏巍;煙氣氧化鎂法脫硫技術(shù)研究[J];山西能源與節(jié)能;2004年03期

5 宋寶華;;濕式鎂法煙氣脫硫技術(shù)發(fā)展綜述[J];中國(guó)環(huán)保產(chǎn)業(yè);2009年08期

6 牛建剛;牛荻濤;周浩爽;;酸雨的危害及其防治綜述[J];災(zāi)害學(xué);2008年04期

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本文編號(hào)：1936725