發(fā)布時間：2018-06-18 11:43

  本文選題：低階煤 + 褐煤��； 參考：《安徽理工大學(xué)》2017年碩士論文

【摘要】：選煤廠對煤炭的加工處理多以水為介質(zhì),產(chǎn)生了很多廢水。為了對其進(jìn)行回收再利用,實際生產(chǎn)中主要采用絮凝劑對它的進(jìn)行處理。工業(yè)生產(chǎn)中應(yīng)用較廣的絮凝劑主要是機(jī)高分子絮凝劑、無機(jī)絮凝劑這兩類。但這兩類作為化學(xué)藥劑,存在較高的環(huán)境和安全隱患。微生物絮凝劑作為一種綠色環(huán)保的新型絮凝劑,高效、安全、無污染,是傳統(tǒng)化學(xué)絮凝劑的良好替代品,因而得到了廣泛的研究。本論文重點研究了微生物絮凝劑多級添加對低階煤絮凝效果的影響。本論文的試驗菌種包括真菌和細(xì)菌,其中細(xì)菌有枯草芽孢桿菌、球紅假單孢菌,真菌為黃孢原毛平革菌。以煤泥水上清液透光率作為評定指標(biāo),通過對單菌種進(jìn)行單因素試驗,找到低階煤煤泥水絮凝的最佳水平范圍。以培養(yǎng)時間、煤泥水pH值、絮凝劑添加量、助凝劑添加量作為主要因素,設(shè)計正交試驗,確定低階煤煤泥水絮凝沉降的最優(yōu)因素組合。進(jìn)而設(shè)計生物多級絮凝試驗和進(jìn)行生物與非生物復(fù)配絮凝試驗,尋找生物多級絮凝和復(fù)配絮凝低階煤煤泥水的最優(yōu)組合。試驗結(jié)果表明,生物絮凝劑多級添加對低階煤具有良好的絮凝效果�？莶菅挎邨U菌(細(xì)菌)與球紅假單孢菌(細(xì)菌)兩級添加:1#(褐煤)枯草芽孢桿菌添加量2ml、球紅假單孢菌添加量lml、助凝劑添加量1 ml、pH值為6時透光率為74.9%;2#(不粘煤)枯草芽孢桿菌添加量1.5ml、球紅假單孢菌添加量lml、助凝劑添加量2ml、pH值為6時透光率為75.9%;3#(弱粘煤)枯草芽孢桿菌添加量2ml、球紅假單孢菌添加量1.5ml、助凝劑添加量3ml、pH值為8時透光率為58.9%。絮凝效果明顯好于單一添加枯草芽孢桿菌或球紅假單孢菌�？莶菅挎邨U菌(細(xì)菌)與黃孢原毛平革菌(真菌)兩級添加:1#(褐煤)枯草芽孢桿菌添加量2ml、黃孢原毛平革菌添加量lml、助凝劑添加量3ml、pH值為5時透光率為74.3%;2#(不粘煤)枯草芽孢桿菌添加量2ml、黃孢原毛平革菌添加量Iml、助凝劑添加量2ml、pH值為8時透光率為76.8%;3#(弱粘煤)枯草芽孢桿菌添加量2ml、黃孢原毛平革菌添加量2ml、助凝劑添加量2ml、pH值為7時透光率為57.8%。絮凝效果明顯好于單·添加枯草芽孢桿菌或黃孢原毛平革菌�？莶菅挎邨U菌(細(xì)菌)、黃孢原毛平革菌(真菌)、球紅假單孢菌(細(xì)菌)多級添加:1#(褐煤)枯草芽孢桿菌添加量2ml、黃孢原毛平革菌添加量1.5ml、球紅假單孢菌添加量2ml、助凝劑添加量4ml、pH值為8時透光率為78.6%;2#(不粘煤)枯草芽孢桿菌添加量2ml、黃孢原毛平革菌添加量1ml、球紅假單孢菌添加量0.5ml、助凝劑添加量3ml、pH值為7時透光率為74.8%;3#(弱粘煤)枯草芽孢桿菌添加量2ml、黃孢原毛平革菌添加量1.5ml、球紅假單孢菌添加量2ml、助凝劑添加量3ml、pH值為7時透光率為69.8%。絮凝效果明顯好于微生物絮凝劑單一添加,而且相比于微生物絮凝劑兩級添加,微生物絮凝劑多級添加大大提升了 3#(弱粘煤)的絮凝沉降效果。球紅假單孢菌(細(xì)菌)、黃孢原毛平革菌(真菌)與聚丙烯酰胺復(fù)配絮凝:1#(褐煤)球紅假單孢菌添加量0.5ml、黃孢原毛平革菌添加量0.5ml、聚丙烯酰胺添加量0.2ml、助凝劑添加量4ml、pH值為8時透光率為81.8%;2#(不粘煤)球紅假單孢菌添加量lml、黃孢原毛平革菌添加量0.5ml、聚丙烯酰胺添加量0.15ml、助凝劑添加量2ml、pH值為9時透光率為95.8%;3#(弱粘煤)球紅假單孢菌添加量1.5ml、黃孢原毛平革菌添加量1.5ml、聚丙烯酰胺添加量0.2ml、助凝劑添加量4ml、pH值為9時透光率為94.9%。絮凝效果明顯好于微生物絮凝劑單一添加或微生物絮凝劑多級絮凝。最后,對生物絮凝劑進(jìn)行生化反應(yīng)分析、紅外光譜(FTIR)以及對干煤泥和絮凝前后煤泥絮體進(jìn)行XRD、FTIR、SEM分析。在電性中和、卷掃、網(wǎng)捕等物理化學(xué)過程共同作用下,低階煤形成絮團(tuán),微生物絮凝劑對煤泥水實現(xiàn)絮凝。經(jīng)過生物絮凝劑絮凝處理后的低階煤煤泥水,其絮體沉降速度很慢但絮體較結(jié)實不易破碎。經(jīng)過生物絮凝劑與聚丙烯酰胺復(fù)配絮凝處理后的低階煤煤泥水,其絮體易碎但沉降速度非�？�。
[Abstract]:In order to recycle and reuse the coal, a lot of wastewater is produced in the processing of coal processing plant. In order to recycle and reuse it, the flocculant is mainly used to treat it in the actual production. The two kinds of flocculants used in industrial production are mainly polymer flocculants and inorganic flocculants, but these two kinds are used as chemical agents. As a new green flocculant, microbial flocculant is a new kind of flocculant with high efficiency, safety and no pollution. It is a good substitute for the traditional chemical flocculant. Therefore, it has been widely studied. This paper focuses on the effect of microbial flocculant multilevel addition on the flocculation effect of low order coal. The species included fungi and bacteria, among which bacteria were Bacillus subtilis, Pseudomonas aeruginosa, and fungi were Phanerochaete. The optimum level of low rank coal slurry flocculation was found by single factor test on single strain, and the time of culture, pH value of coal mud water and the amount of flocculant were added. As the main factor of coagulant addition, orthogonal experiment was designed to determine the optimal combination of flocculating settlement of low rank coal and coal slurry, and then the biological multistage flocculation test and biological and abiotic compound flocculation test were designed to find the optimal combination of biological multistage flocculation and compound flocculation of low rank coal and coal mud water. Multistage addition of coagulant has good flocculation effect on low order coal. Bacillus subtilis (bacteria) and Pseudomonas aeruginosa (bacteria) two levels: 1# (brown coal) Bacillus subtilis added 2ml, Pseudomonas aeruginosa added LML, coagulant added 1 ml, pH value of 6 when the light transmittance was 74.9%; 2# (non stick coal) Bacillus subtilis added 1.5ml, The addition of Rhodopseudomonas sp. was LML, the dosage of coagulant was 2ml, the transmittance was 75.9% when the value of pH was 6. The addition of Bacillus subtilis with 3# (weak coal) Bacillus subtilis was 2ml, the addition of Pseudomonas aeruginosa was 1.5ml, the addition of coagulant was 3ml, and the pH value was 8 at 58.9%. better than that of Bacillus subtilis or Pseudomonas aeruginosa with single addition of Bacillus subtilis or pseudobacillus subtilis. The addition of Bacillus subtilis (bacteria) and Phanerochaete Chrysosporium (fungi): 1# (brown coal) Bacillus subtilis added 2ml, Phanerochaete Chrysosporium added LML, coagulant addition of 3ml, pH value of 5 when the light transmittance was 74.3%; 2# (non sticky coal) Bacillus subtilis added 2ml, Phanerochaete Chrysosporium added Iml, coagulant addition 2ml, pH value 8 The transmittance was 76.8%, the addition of Bacillus subtilis 3# (weak coal) was 2ml, the addition of Phanerochaete Chrysosporium was 2ml, the dosage of coagulant was 2ml, and the transmittance of 57.8%. was better than that of Bacillus subtilis or Phanerochaete, Bacillus subtilis (Bacillus subtilis), Bacillus subtilis (bacteria), Bacillus subtilis (fungi), and ball red. The addition of spores (bacteria): 1# (brown coal) Bacillus subtilis added 2ml, Phanerochaete Chrysosporium added 1.5ml, Pseudomonas aeruginosa added 2ml, coagulant addition of 4ml, pH value of 8 when the transmittance was 78.6%; 2# (non sticky coal) Bacillus subtilis added 2ml, Phanerochaete Chrysosporium added 1ml, Pseudomonas aeruginosa added 0.5ml, The addition of coagulant was 3ml, the transmittance was 74.8% when the value of pH was 7; the addition of Bacillus subtilis with 3# (weak coal) was 2ml, the addition of Phanerochaete Chrysosporium was 1.5ml, the addition of Pseudomonas aeruginosa was 2ml, the addition of coagulant was 3ml, and the value of transmittance was 69.8%. when the value of pH was 7, and the flocculating effect was better than the microbial flocculant single addition, and compared with the microbial flocculation. Adding two stages of coagulant and multistage addition of microbial flocculant greatly enhanced the flocculation and settling effect of 3# (weak sticky coal). Rhodopseudomonas sp. (bacteria), Phanerochaete Chrysosporium (fungi) and polyacrylamide compound flocculation: 1# (brown coal), Pseudomonas aeruginosa added 0.5ml, addition of Phanerochaete Chrysosporium 0.5ml, and 0.2ml addition of polyacrylamide. The light transmittance was 81.8% when the dosage of the coagulant was 4ml and the value of pH was 8; the addition of Pseudomonas aeruginosa by 2# (non stick coal) was LML, the addition of Phanerochaete Chrysosporium was 0.5ml, the addition of polyacrylamide was 0.15ml, the dosage of the coagulant was 2ml, the transmittance was 95.8% when the value of pH was 9; the addition of 3# (weak sticky coal) of Pseudomonas aeruginosa was 1.5ml, and the addition of Phanerochaete Chrysosporium was 1.5ml. The addition of acrylamide was 0.2ml, the amount of coagulant was added to 4ml, when the pH value was 9, the effect of light transmittance to 94.9%. was better than that of microbial flocculant single addition or microbial flocculant multistage flocculation. Finally, biochemical reaction analysis of bioflocculant, infrared spectrum (FTIR) and XRD, FTIR, SEM to dry slime and flocculation before and after flocculation were carried out. Under the common effects of physical and chemical processes such as electric neutralization, sweeping and net capture, low order coal formed floc and microbial flocculant flocculated coal mud water. After flocculation of bioflocculant, the sedimentation rate of the floc was very slow but the floc was not easy to break. Through biological flocculant and polyacrylamide, the flocculant was mixed with polyacrylamide. After flocculation, the floc of the low rank coal slime water is fragile, but the settling velocity is very fast.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD94

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