【作者】 姜美美；

【导师】 邹华生；

【作者基本信息】 华南理工大学 ， 化学工艺， 2011， 硕士

【摘要】 随着科技的发展和人类对自身健康的关注度增加,医药工业迅速发展,与此同时伴随而来的是医药行业在药物生产的过程中排放出的废水的增加以及对环境造成的污染的加剧,这些消极的影响也给人类的生命健康带来了新的严重的威胁。因此探讨有效处理医药废水是非常有必要的。填料是废水生物接触氧化处理工艺的核心部分。根据生物接触氧化法对填料特性的要求,本论文创新设计、研制开发了性能优良的填料。本论文采用的新型阶梯环组合填料除具有耐磨、耐压、腐蚀性、机械性能好、无毒之外,还具有优良的布水布气性能和切割气泡的功能。以空间立体构型和半软性纤维相结合,可以得到性能优良的填料,此填料的空隙率为0.94,比表面积为382.9m²·m^-3,比阶梯环填料增大250.4 m²·m^-3。实验测定了组合填料和阶梯环填料在清水和废水中的氧传递性能,通过数据拟合,得到了不同情况下的液相总体积传质系数和在20mg·L^-1废水中的液相总体积传质系数计算式。阶梯环填料: K_La=12.30q^0.5605,组合填料:K_La=12.67q^0.7927。在相同曝气量下,后者的传质系数高于前者:在实验采用的曝气量1.0^-1.8m³·h^-1范围内,组合填料的液相总体积传质系数要比阶梯环填料的液相总体积传质系数大3.01%^-18.07%。阶梯环填料塔与新型组合生物填料塔进行平行对比实验,阿莫西林模拟废水降解实验表明,降解过程中在新型阶梯环组合生物填料塔中阿莫西林的去除比在阶梯环填料塔中快。废水中的初始浓度、溶解氧、葡萄糖浓度和填料层高度对阿莫西林的去除有显著影响。在本实验所考察的参数范围内,最佳溶解氧浓度为5mg·L^-1,最适宜葡萄糖浓度800mg·L^-1,最佳处理时间为72h。正交试验的结果表明,影响阿莫西林在新型填料塔内的去除效果的因素的主次顺序为:溶解氧浓度>葡萄糖浓度>处理时间>阿莫西林浓度。实验范围内的最优组合为:20 mg·L^-1的阿莫西林,4mg·L^-1的溶解氧浓度,800mg·L^-1的葡萄糖浓度和72小时处理时间。各因素水平的变化对于结果的影响的显著程度为:溶解氧浓度和葡萄糖浓度高度显著,处理时间和阿莫西林浓度显著。更多还原

【Abstract】 With the development of science and technology and the attention paid to health, medical industry develops rapidly. However, at the same time, wastewater from the process of manufacture medicine is increasing, thus the pollution to environment is more and more serious. All these negative impacts bring new and critical threatens to human being’s health. To sum up, it is of great necessary to do some research on treating medical wastewater.Packing is a key part of wastewater treatment in aerobic system. A novel combined packing of superior characteristics was developed in order to meet the requirement for the biological attaching oxidation process. Except for the wear-resisting、pressure-resisting、anticorrosion、good mechanics and avirulence, the combined packing is excellent in the function of dispersing liquid and air flow in packing tower and bubble cutting. The experiment shows that the combination of stereoscopic structure and semi-soft fiber will get a new packing with excellent characteristics. The parameters of new packing are that: the porosity is 0.94, specific surface area is 382.9 m²·m^-3.The dynamic curves of oxygen mass transfer were measured experimentally and the formulas for calculating liquid overall volumetric oxygen mass transfer coefficients in the novel style combing packing tower or in the ladder packing tower were obtained by fitting the experimental data. The formula for new style combined packing tower is K_La=12.30q^0.5605, for Cascade Mini ring tower is K_La=12.67q^0.7927. The comparison between the two formulas shows that at the same aeration flux, the latter K_La is bigger than the former one: under the condition of research, the aeration is 1.0^-1.8m³·h^-1, thus the K_La for the latter one bigger than the former one is 3.01%^-18.07%.The experimental results in new style combined packing tower parallel with Cascade Mini ring tower indicate that: the degradation of Amoxicillin simulated wastewater in the new style combined packing tower is faster than that in the Cascade Mini ring tower. Factors such as the initial concentration, dissolved oxygen concentration, glucose concentration and packing height have great influence on the degradation of Amoxicillin. In the parameters this experiments considered, best aeration flux is 4mg·L^-1, best glucose concentration is 800mg·L^-1, best treating time is 72h.The results of orthogonal test shows the sequence of factors which affect the remove of Amoxicillin in new style packing tower is: dissolved oxygen > concentration of glucose > treating time > initial concentration of Amoxicillin. The optimal combination is: when the initial concentration of Amoxicillin is 20mg·L^-1, the dissolved oxygen is 4mg·L^-1, glucose concentration is 800mg·L^-1, and the treating time is 72h. The notability of variation of each factor level is: dissolved oxygen and concentration of glucose are highly notable, treating time and the initial concentration of Amoxicillin are moderately notable.更多还原