本文選題：O_3-GAC　切入點：嗅味物質(zhì)　出處：《蘇州科技學院》2015年碩士論文

【摘要】：點源污染、面源污染及湖泊局部養(yǎng)殖業(yè)廢水是造成太湖流域水體富營養(yǎng)化的主要因素。根據(jù)對2014年蘇州市某水廠原水水質(zhì)調(diào)查結(jié)果顯示,東太湖主要污染指標為TP、TN、有機污染物,富營養(yǎng)化指數(shù)54.4,平均達到II類水體標準。東太湖主要嗅味物質(zhì)為2-MIB、GSM,6、7、8、9月份是嗅味物質(zhì)的高發(fā)期,其中7月份達到最高值。本文采用中試方法研究了預臭氧-常規(guī)工藝與預臭氧-常規(guī)工藝-深度處理工藝(O_3-GAC)對含有嗅味物質(zhì)飲用水的處理效果。通過考察江蘇省某自來水廠原水水質(zhì),得出4、5月份原水中嗅味物質(zhì)含量較低,采用投加嗅味物質(zhì)的方法進行研究,投加量為10ng/L~500ng/L。研究表明:(1)預臭氧-常規(guī)工藝對濁度、有機物、氨氮的去除效果較好,但增加深度處理工藝(O_3-GAC)后對低濁度(2NTU)、低濃度有機物(2mg/L)、低濃度氨氮(0.04mg/L)有進一步的去除效果,且出水水質(zhì)穩(wěn)定。出水濁度穩(wěn)定在0.2NTU左右,CODMn穩(wěn)定在1.20mg/L,氨氮濃度均小于0.02mg/L。(2)原水中嗅味物質(zhì)投加量為10ng/L~50ng/L時,預臭氧-常規(guī)工藝出水中2-MIB、GSM的含量低于國家嗅閾值10ng/L;投加量為80ng/L~500ng/L時,預臭氧-常規(guī)工藝出水不能滿足出水水質(zhì)要求。增加深度處理工藝(O_3-GAC)后,原水中嗅味物質(zhì)200ng/L時,炭濾柱出水檢測不出2-MIB、GSM的存在;原水中嗅味物質(zhì)濃度200ng/L且500ng/L時,炭濾柱出水中2-MIB、GSM的含量均低于1ng/L。(3)預臭氧-常規(guī)工藝-深度處理工藝(O_3-GAC)對2-MIB、GSM的去除率穩(wěn)定,均達到99%左右,試驗期間有機物的含量對其影響不明顯。但預臭氧-常規(guī)工藝對2-MIB的去除率與CODMn去除率呈負相關(guān),R2=0.40938。(4)與生產(chǎn)工藝O_3-BAC工藝相比較,得出生物相對嗅味物質(zhì)、有機物的去除效果幾乎沒有影響,但具有穩(wěn)定O_3-BAC工藝去除低濁度的作用。采用小試方法研究了顆粒活性炭吸附2-MIB的影響因素,研究表明:(1)Freundlich吸附等溫線模型比Langmuir吸附等溫線模型更適合描述顆�；钚蕴繉�2-MIB的吸附去除過程。(2)由于不同水質(zhì)中物質(zhì)含量不同,與2-MIB發(fā)生吸附競爭,蒸餾水中GAC吸附容量參數(shù)K及吸附速率大于原水和自來水的;自來水中含有余氯,影響GAC吸附容量參數(shù)K及吸附速率,使原水中K及吸附速率大于自來水的,且余氯含量越大,影響越明顯。(3)在堿性條件下,GAC對2-MIB的吸附效果較好;陽離子Mg2+、AL3+、Fe3+和陰離子NO_3+使GAC對2-MIB的吸附作用下降,影響明顯,而Na+、K+、Ca2+、CO_32-、HCO_32-、SO42-對顆�；钚蕴课饺コ�2-MIB則幾乎沒有影響。
[Abstract]:Point source pollution, non-point source pollution and lacustrine local aquaculture wastewater are the main factors causing eutrophication in Taihu Lake basin. According to the investigation results of raw water quality of a water plant in Suzhou City in 2014, the main pollution index of East Taihu Lake is TPTNN and organic pollutants. The eutrophication index was 54.4, which reached the standard of Class II water body on average. The main smelling substances in East Taihu Lake were 2-MIBX, GSM6, GSM6, 7, 80.The high incidence of smelling substances was observed in September. In July, the maximum value was reached. In this paper, the effects of pre-ozonation-conventional process and pre-ozonic-conventional process-advanced treatment process on drinking water containing smelling substances were studied by means of pilot-scale method. The raw water quality of a waterworks, The results show that the content of odorous substances in raw water is relatively low in April and May, and the method of adding smelling substances is used to study it. The dosage is 10 ng / L ~ (-1) / L ~ (500) ng / L. the results show that the pre-ozonation / conventional process has better removal effect on turbidity, organic matter and ammonia nitrogen. However, after adding advanced treatment process, O _ 3-GAC) can further remove low turbidity ~ 2NTU, low concentration organic matter ~ 2 mg / L ~ (-1), low concentration ammonia ~ (4) N ~ (2 +) 0.04 mg / L). And the effluent quality is stable, the turbidity of the effluent is stable at 1.20 mg / L of 0.2NTU, and the concentration of ammonia nitrogen is less than 0.02 mg / L ~ (2). When the amount of smelling substance in raw water is 10ng/L~50ng/L, the content of 2-MIBN in pre-ozonation and conventional process effluent is lower than the national olfactory threshold of 10 ng / L, and when the dosage is 80ng/L~500ng/L, Pre-ozonation-conventional process effluent can not meet the requirement of effluent quality. After adding the advanced treatment process, the presence of 2-MIBM-GSM in raw water can not be detected when the smell substance 200ng/L in raw water is added, and when the concentration of odorous substance in raw water is 200ng/L and 500ng/L, The content of 2-MIBN GSM in the effluent of carbon filter column is lower than that of 1ng / L 路L ~ (-3)). The removal rate of 2-MIBN GSM by pre-ozonation-conventional process-advanced treatment process (O _ (3-GAC)) is stable, reaching about 99%. However, the removal rate of 2-MIB by pre-ozonation-conventional process was negatively correlated with the removal rate of CODMn. The removal efficiency of organic matter has little effect, but it has the effect of stabilizing the removal of low turbidity by O_3-BAC process. The factors affecting the adsorption of 2-MIB by granular activated carbon were studied by small scale experiment. The results show that the Langmuir adsorption isotherm model is more suitable than the Langmuir adsorption isotherm model to describe the adsorption and removal process of 2-MIB by granular activated carbon. The adsorption capacity parameter K and adsorption rate of GAC in distilled water are larger than those in raw water and tap water, and the residual chlorine content in tap water is higher than that in tap water, which affects the adsorption capacity parameter K and adsorption rate of GAC in raw water, and the adsorption rate of K and adsorption rate in raw water is larger than that in tap water, and the content of residual chlorine in tap water is higher. The more obvious the effect is, the better the adsorption effect of GAC on 2-MIB is under alkaline condition, the effect of cation Mg2 AL3Fe3 and anionic NO_3 on the adsorption of 2-MIB is decreased, and the effect of GAC on the adsorption of 2-MIB is obvious, while the adsorption of 2-MIB on granular activated carbon is almost unaffected by Na ~ (2 +) K ~ (2 +) Ca ~ (2 +) ~ (2) -CO32 ~ (-) -C _ (32) so _ (4) ~ (-) -.
【學位授予單位】：蘇州科技學院
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU991.2

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