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摘要：随着人口的增长与社会的发展，水污染问题呈现出日益严重的趋势，水体中的氨氮和消毒副产物（DBPs）前驱物的浓度不断升高，严重影响了饮用水水质，危害着人体健康，且常规工艺很难使水质达标。而沸石便宜易得并且对氨氮有高选择吸附性，同时生物质炭拥有安全高效等优点，利用沸石或生物质炭对水体中氨氮、及DBPs前驱物的吸附研究近年来不断进展，但将二者结合起来用于去除微污染水中氨氮和DBPs前驱物的研究却仍需深入探讨。本研究对天然沸石进行改性处理，将处理后的沸石与生物质炭结合制备成复合材料；以复合材料为吸附剂，以氨氮、DBPs前驱物作为目标污染物，通过实验研究初始pH值、温度、吸附时间、复合材料投加量、初始污染物浓度对复合材料吸附性能的影响；本研究还开展了复合材料在实际微污染水中的应用研究，包括氨氮、DBPs前驱物、CODMn和浊度等指标的去除效果。29685
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毕业论文关键词：复合材料；氨氮；DBPs前驱物；微污染水
Removal of Ammonia Nitrogen and DBPs Precursors in Micro-polluted Water by Biochar-Zeolite Composites
Abstract：With the growth of population and the development of society, the problem of water pollution is becoming more and more serious. The concentration of ammonia nitrogen and disinfection byproducts (DBPs) precursors in water is increasing, which seriously affects the drinking water quality and endangers human health, And the conventional process is difficult to make water quality standards. The adsorption of ammonia nitrogen and DBPs precursors in water by zeolite or biochar has been progressing in recent years, but the combination of the two is the same. It is still necessary to study the removal of ammonia nitrogen and DBPs precursors in micro-polluted water. In this study, the natural zeolite was modified and the treated zeolite was combined with biochar to prepare the composite material. The composite material was used as adsorbent and ammonia nitrogen and DBPs precursor as the target pollutants. The effects of initial pH value, temperature, adsorption time, composite material dose and initial concentration of pollutant on the adsorption performance of the composite materials was investigated. Moreever, the application of composite materials in practical micro-polluted water was also studied, and the removal efficiencies of ammonia nitrogen, DBPs precursors, CODMn and turbidity, and so on by composite materials were explored.
Key words: Composites; Ammonia nitrogen;DBPs precursor;Micro-polluted water
目 录
摘要1
关键词1
Abstract1
Key words2
引言2
1.材料与方法2
1.1实验材料 3
1.2实验器材 3
1.3实验方法3
1.3.1沸石的改性3
1.3.2复合材料的制备3
1.3.3监测方法3
1.3.4初始pH值的影响 3
1.3.5吸附温度的影响3
1.3.6吸附时间的影响3
1.3.7复合材料投加量的影响3
1.3.8污染物初始浓度的影响4
1.3.9复合材料对实际微污染水的处理4
2.结果与分析4
2.1复合材料对模拟微污染水的处理4
2.1.1初始pH值的影响4
2.1.2吸附温度的影响5
2.1.3吸附时间的影响6
2.1.4复合材料投加量的影响7
2.1.5污染物初始浓度的影响9
2.2复合材料对实际微污染水的处理10
2.2.1实际水样处理10
2.2.2 DBPs前驱物去除试验验证11
3.总结与讨论12
致谢12
参考文献12
图1-14
图1-26
图1-37
图1-48
图1-510
表1-611
表1-711
生物质炭-沸石复合材料对微污染水中氨氮和DBPs前驱物的去除性能
引言：随着经济的发展和人们生活水平的提高，由于工业污染排放、畜禽养殖和水产养殖污水排放、生活污水排放等引起的水体氨氮污染日益加重[1]。而氨氮污染又严重影响着人们生活生产对用水的需求，同时，消毒副产物（DBPs）前驱物也严重影响着水质安全和人体健康[2]。常规水处理方法很难使水质达标，研究高效安全的去除微污染水中氨氮和DBPs前驱物的方法刻不容缓。