酒糟—污泥碳浓缩基吸附剂的制备、表征及在活性染料废水中的应用

发布时间：2018-04-06 01:17

本文选题：酒糟-污泥　切入点：碳浓缩吸附剂　出处：《齐鲁工业大学》2015年硕士论文

【摘要】：酒糟和污泥是工业废弃物之一。酒糟为酿酒工业废弃物,污泥为污水厂的沉淀物经脱水而成的。酒糟以饲料资源化为主,而污泥多以填埋处置为主,不能有效的治理其二次污染的问题,如何对其两者进行综合利用,实现其处理的资源化与合理化,改善周围的环境,防止对周围环境造成污染具有重要的意义。酒糟、污泥混合后可实现其理化性质互补协同效果,将酒糟与污泥均匀混合,酒糟因此变得紧实。将酒糟-污泥作为碳浓缩吸附剂合成的原料,在不同反应温度条件下制备碳浓缩吸附剂。旨在考察不同炭化温度和不同酒糟与污泥比例条件下制备碳浓缩吸附剂的表征,选择出对氨氮、磷和重金属铬的最佳制备及其吸附条件。碳浓缩吸附剂制备与表征研究结果显示：400℃～500℃的条件下制备的碳浓缩吸附剂产率较低；而在600℃～700℃范围内炭化产生的碳浓缩吸附剂的性质和结构相对稳定。不同碳浓缩吸附剂的pH值总体表现为700℃600℃500℃400℃,pH从7.4增加到10.1,即多数碳浓缩吸附剂为碱性。挥发性有机物含量随炭化温度升高亦呈增加趋势。FT-IR分析结果显示：碳浓缩吸附剂富含大量的芳香族建,低温下制备的碳浓缩吸附剂还含有饱和的烃基和长链烃基。随反应温度增加,碳浓缩吸附剂中脂肪性烷基链基本消失,而芳香性逐渐变多。SEM分析结果显示：随着炭化温度升高碳浓缩吸附剂从盲孔数目减少到表面空穴增多,形成堆叠状态,并且堆叠状态物质表面较粗糙。碳浓缩吸附剂吸附氮废水实验结果显示：反应温度400℃～700℃之间时,酒糟：污泥为20：80时制取的碳浓缩吸附剂的吸附性能最佳,其对氨氮的去除率分别为71.9%、82.8%、83.9%和81.1%。对含磷废水吸附研究结果显示：炭化温度400℃～700℃范围内吸附含磷废水时最佳比例为酒糟：污泥为0：100(污泥占生物质含量100%),400℃的碳浓缩吸附剂对废水中磷呈解吸状态、500℃～700℃碳浓缩吸附剂对废水磷的去除率分别为35.7%、53.1%、68.5%。对含Cr(Ⅵ)废水吸附研究结果显示：吸附重金属铬废水时最佳比例为酒糟：污泥为90：10,炭化温度400℃～700℃的碳浓缩吸附剂对Cr6+的去除率分别为87.9%、91.5%、94%和99.1%。采用碳浓缩吸附剂对副品红废水进行吸附,吸附最佳时间为150min,吸附过程中温度和pH对其影响不明显,最佳的碳浓缩吸附剂的添加量为10g/300mL,采用两级或者多级吸附的方式能够减少吸附剂的使用量。铁屑-碳浓缩吸附剂偶联反应过程中最适的反应条件是pH 3±0.1,铁屑的最适加入量10g/300mL,铁屑与碳浓缩吸附剂的质量比1：1,反应时间40 min,反应温度对铁屑.碳浓缩吸附剂偶联反应影响不明显。在双氧水参与的铁屑-碳浓缩吸附剂偶联反应过程中,最佳的反应条件为pH4±0.1,双氧水的最适加入量35 mmoL,反应时间30 min,反应过程与温度的关系不明显。碳浓缩吸附剂再生实验过程中,再生温度为700℃,程升温度为40℃,再生时间为40 min,再生次数为3-4次为最佳再生条件,氮气流速对再生效果几乎无影响。
[Abstract]:Lees and sludge is one of the industrial waste lees. For the brewing of industrial waste, sewage sludge sediment is formed by dehydration. The lees feed resources mainly, and sludge to landfill disposal, not effective governance of secondary pollution, how to carry out the comprehensive utilization of two, to achieve its processing resources and rationalization, improve the surrounding environment, which is of great significance to prevent pollution of the surrounding environment. Lees, the mixed sludge can achieve the physicochemical properties of complementary and synergistic effect, the lees and sludge mixed evenly, thus became more compact. The lees lees and sludge as carbon adsorbent concentration synthetic material, preparation carbon concentration of adsorbent under different temperature conditions. In order to prepare carbon adsorption characterization of thickening agent under different carbonization temperature and different lees and sludge ratio conditions, selection of nitrogen, phosphorus and heavy The best preparation and adsorption conditions of metallic chromium. Carbon concentrating adsorbent preparation and characterization of the study shows: 400 to 500 DEG C under the condition of preparation of carbon adsorbent concentration yield is low; the structure and properties of carbon concentration of adsorbent and carbonization at 600 to 700 DEG C range is relatively stable. Different carbon adsorbent concentration pH value of the overall performance of 700 C 600 C 500 C 400 C, pH increased from 7.4 to 10.1, the most concentrated carbon adsorbent is alkaline. Volatile organic content also increased the.FT-IR analysis results showed that with the carbonization temperature, carbon concentration of adsorbent is rich in aromatic large building under low temperature, preparation of carbon adsorbent concentration also contains saturated hydrocarbon and long chain alkyl. With the reaction temperature increased, the adsorption of carbon enriched fatty alkyl chain agent disappeared, and the aromaticity becomes multi.SEM analysis results show that with the temperature rising High concentration carbon adsorbent from surface to reduce the number of blind hole increased to form a stack, and the stack state material with rough surface. The adsorption of nitrogen enriched carbon wastewater experiment results show that: the reaction temperature is 400 DEG C to 700 DEG C, lees: sludge is 20:80 carbon adsorbent for the adsorption of concentrated performance is best. The 82.8% of the ammonia nitrogen removal rate were 71.9%, 83.9%, and 81.1%. of wastewater containing phosphorus adsorption results showed that the carbonization temperature 400 to 700 DEG C within the adsorption of phosphorus containing wastewater when the best proportion was: 0:100 (sludge lees sludge biomass accounted for 100%, 400 C content) carbon concentration adsorbent for wastewater phosphorus is desorption state, 500 to 700 DEG C carbon concentration adsorbent for wastewater phosphorus removal rates were 35.7%, 53.1%, 68.5%. of Cr (VI) wastewater adsorption results showed that the adsorption of heavy metal chromium wastewater is the best proportion For the lees: sludge as 90:10, carbonization temperature 400 to 700 DEG C carbon adsorbent concentration on the removal rate of Cr6+ were 87.9%, 91.5%, 94% and 99.1%. using carbon adsorbent for concentrated Parafuchsin wastewater by adsorption, the best time for adsorption of 150min, temperature and pH on adsorption process of its influence is not obvious amount of carbon concentration the best adsorbent for 10g/300mL, using two or more stages of adsorption can reduce the amount of adsorbent used. Iron - carbon adsorption concentration and the best reaction conditions of agent coupling reaction in the process of the pH 3 + 0.1, the optimum amount of 10g/ iron 300mL, iron and carbon concentration of adsorbent the mass ratio of 1:1, reaction time is 40 min, the reaction temperature of the iron. Influence of adsorbent carbon concentration is not obvious. In the coupling reaction of H2O2 in iron - carbon concentration and adsorbent coupling reaction, the optimum reaction conditions for pH4 + 0.1, the hydrogen peroxide water Suitable amount of 35 mmoL, the reaction time is 30 min, the relationship between reaction temperature and carbon concentration is not obvious. The adsorbent regeneration process, regeneration temperature is 700 DEG C, Cheng l temperature is 40 DEG C, the regeneration time is 40 min, the number of regeneration is 3-4 times for the best regeneration conditions, nitrogen flow rate has little effect on the the regeneration effect.

【学位授予单位】：齐鲁工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ424;X797;X703

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