本文選題：生物活性炭　切入點(diǎn)：臭氧　出處：《華南理工大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：在南方濕熱地區(qū)，臭氧-生物活性炭工藝對有機(jī)物的去除在使用后期主要以生物作用為主，而維持一定的活性炭吸附能力可以有效應(yīng)對水源的突發(fā)污染。因此長時(shí)間使用的活性炭顆粒吸附能力及其對凈水方面的貢獻(xiàn)如何，有必要進(jìn)行試驗(yàn)研究。本文依據(jù)南方某凈水廠實(shí)際運(yùn)行情況及不同水源地的中試試驗(yàn)，對生物活性炭凈水相關(guān)性能進(jìn)行分析，從水質(zhì)、臭氧投加量與反沖洗方式等因素對生物活性炭性能的影響進(jìn)行研究，并對活性炭長期使用的吸附容量，生物與吸附作用比例進(jìn)行定量分析，結(jié)合生產(chǎn)運(yùn)行，，考察活性炭長時(shí)間使用的可能性，結(jié)果表明： （1）生物活性炭濾池對有機(jī)物有較好的去除效果，初始時(shí)生物活性炭單元對CODMn的去除率在40%以上，后穩(wěn)定在25%左右；對水中色度去除率穩(wěn)定在60%以上，對臭味物質(zhì)的去除率也在90%以上；對于單元進(jìn)水為0.5mg/L的錳和0.6mg/L的鐵，出水可滿足生活飲用水衛(wèi)生標(biāo)準(zhǔn)。 （2）活性炭吸附性能指標(biāo)的變化與水源水質(zhì)存在一定的相關(guān)性，北江水源下活性炭的碘值和亞甲藍(lán)值下降幅度較東江水源大，而以大中分子有機(jī)物為主的東江水源，其腐殖酸吸附值則呈現(xiàn)相對較明顯的下降趨勢；臭氧投加于活性炭濾池之前，有利于生物活性炭作用的形成，可降低炭濾池的吸附負(fù)荷，延長活性炭的吸附周期�；钚蕴课街抵笜�(biāo)與水質(zhì)凈化效果間并無明顯相關(guān)性。 （3）使用1年的活性炭對CODMn的吸附量為新炭的65%，之后吸附性能降低相對緩慢，使用8年對水中有機(jī)物仍有吸附作用，對CODMn的吸附量為新炭的21%。炭吸附作用在初始時(shí)下降速率較快，之后趨于平緩，形成動態(tài)吸附平衡。中試系統(tǒng)新炭吸附作用占總DOC去除量的92%，4個(gè)月后占68.3%，使用1年后占55.3%，水廠生產(chǎn)在使用1年后和8年后的活性炭中吸附作用分別占56.0%和26.3%。 （4）水廠在對個(gè)別炭濾池更換炭后，水質(zhì)改善效果并不明顯。其對CODMn的去除率從18.4%提升至25.3%，出水菌落總數(shù)從118.5CFU/mL升高至149.5CFU/mL。只要出水水質(zhì)滿足飲用水水質(zhì)標(biāo)準(zhǔn)和水廠內(nèi)控指標(biāo)，則活性炭仍然處于有效的工作狀態(tài)。凈水活性炭的使用壽命應(yīng)該根據(jù)當(dāng)?shù)厮|(zhì)情況，以及所要達(dá)到的出水水質(zhì)標(biāo)準(zhǔn)來定。
[Abstract]:In the humid and hot area of southern China, the removal of organic matter by ozonic-biological activated carbon (BAC) process was mainly biological at the later stage of use. However, maintaining a certain capacity of activated carbon adsorption can effectively cope with sudden pollution of water sources. So what is the adsorption capacity of activated carbon particles and its contribution to water purification for a long time? It is necessary to carry out experimental research. Based on the actual operation of a water purification plant in southern China and the pilot test of different water sources, the related performance of biological activated carbon (BAC) water purification is analyzed, and the water quality is analyzed. The effects of ozone dosage and backwashing method on the performance of biological activated carbon were studied. The adsorption capacity and the proportion of biological and adsorptive action of activated carbon were quantitatively analyzed, combined with the operation of production. The possibility of using activated carbon for a long time was investigated. The results showed that:. (1) the biological activated carbon filter has a good removal effect on organic matter, the removal rate of CODMn is above 40% at the beginning, then it is stable at 25%, and the removal rate of chroma in the water is above 60%. The removal rate of odorous substances was more than 90%, and the effluent of mn and 0.6mg/L containing 0.5mg/L and 0.6mg/L could meet the sanitary standard of drinking water. (2) there is a certain correlation between the change of adsorption performance of activated carbon and the water quality of water source. The iodine value and methylene blue value of activated carbon in the water source of Beijiang River are lower than those of Dongjiang water source, while the water source of Dongjiang River is dominated by large and medium molecular organic compounds. The adsorption value of humic acid showed a relatively obvious downward trend, ozone added to the activated carbon filter before the formation of the role of biological activated carbon, can reduce the adsorption load of carbon filter, The adsorption period of activated carbon was prolonged. There was no significant correlation between the adsorption value of activated carbon and the purification effect of water quality. The adsorption capacity of activated carbon for 1 year on CODMn was 65% of that of new carbon, and the adsorption ability of activated carbon was relatively slow. After 8 years of use, the adsorption of organic matter in water was still active, and the adsorption amount of CODMn was 21% of that of new carbon. The adsorption rate of carbon decreased rapidly at the beginning. The adsorption of new carbon in the pilot plant accounted for 92% of the total DOC removal amount, 68.3% after 4 months and 55.3% after one year. The adsorption rate of activated carbon in water plant production after one year and eight years was 56.0% and 26.3%, respectively. (4) after replacing carbon from individual carbon filters, the water plant has no obvious effect on the improvement of water quality. The removal rate of CODMn is increased from 18.4% to 25.3%, and the total number of bacteria in effluent increases from 118.5CFU/mL to 149.5 CFU / mL. As long as the effluent quality meets the drinking water quality standard and the internal control index of water plant, The service life of the activated carbon should be determined according to the local water quality and the effluent quality standard.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU991.2

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