含硫酸钙污泥脱硫处理的探索性研究任务书
2020-04-17 20:28:24
1. 毕业设计(论文)的内容和要求
随着我国工业的飞速发展,很多化工企业在产生巨大利益的同时会产生大量的危险废弃物,据不完全统计其产值约上亿吨/年。
其中酸性废水(以h2so4为主)生化处理前经过ph调节,在调节池或中和池投入石灰水来处理,会产生大量的caso4沉淀,与池底的污泥混合在一起,会产生大量的含硫酸钙污泥,与此相类似的还有磷石膏和钛石膏等固废。
这些污泥具有来源多样、种类繁多、成分相对简单、环境危害严重、处理经济成本高等特点,如不能及时进行处理将对生态环境造成严重的影响,进而危害人体健康。
2. 参考文献
[1] D. Cordell, J.O. Drangert, S.White, The story of phosphorus: global food security and food for thought, Glob. Environ. Chang. 19 (2009) 292#8211;305. [2] B. Yuan, C. Li, B. Liang, L. Lu, H. Yue, H. Sheng, L. Ye, H. Xie, Extraction of potassium from K-feldspar via the CaCl2 calcination route, Chin. J. Chem. Eng. 23 (2015)1557#8211;1564. [3] S.K. Jena, P.K. Misra, B. Das, Studies on extraction of potassium from feldspar by roast-leach method using phosphogypsum and sodium chloride, Miner. Process. Extr. Metall. Rev. 37 (2016) 323#8211;332. [4] 黄连荣,陈栋华,彭玉华.不同制备方法的CuC2O4-ZnC2O4#183;2H2O的热行为和热分解动力学[J].中南民族大学学报:自然科学版,2004(3):12-16. [5] 李相国,陈嘉懿,马保国.粒度分布对磷石膏-石灰-粉煤灰胶结材物理性能的影响[J].化工学报,2012(S1):230-234. [6] 肖海平,周俊虎,刘建忠,等.CaSO4与CaS在N2气氛下反应动力学[J].化工学报,2005(7):1322-1326. [7] 张跃,唐明林,杨守明,等.我国硫铁矿资源开发利用现状和进展[J].硅酸盐通报,2013(5):895-897. [8] 郑邵聪,马丽萍,宁平,等. 高硫煤还原磷石膏的热分解动力学[J]. 武汉理工大学学报, 2010, 32( 5) : 109- 112 [9] 李艳,郁青春,杨斌,等. 高岭土在真空下的热分解行为[J]. 真空科学与技术学报, 2012, 32( 7) : 599 -604 [10] 章静. 脱硫石膏热分解特性的实验和机理研究[D]. 南京: 南京师范大学, 2011 [11] Ma Liping,Niu Xuekui,Hou Juan, et al. Reaction Mechanism and Influence Factors Analysis for Calcium Sulfide Generation in the Process of Phosphogypsum Decomposition[J]. Thermochimica Acta, 2011, 526: 163 - 168 [12] 梅林,李金洪,王建春. 氧化物及复合添加剂对硫酸钙高温稳定性的影响[J]. 岩石矿物学杂志, 2005, 24 (6): 587-590. [13] S. Yin, G. Lin, S. Li, J. Peng, L. Zhang, Application of response surface methodology for optimization of parameters for microwave heating of rare earth carbonates, High Temp. Mat. Pr-Isr 35 (2016) 813#8211;820. [14] Z. Duan, J. Li, T. Li, S. Zheng,W. Han, Q. Geng, H. Guo, Influence of crystal modifier on the preparation of α-hemihydrate gypsum from phosphogypsum, Constr. Build. Mater. 133 (2017) 323#8211;329. [15] Y. Zhang, E. Asselin, Z. Li, Laboratory and pilot scale studies of potassium extraction from K-feldspar decomposition with CaCl2 and CaCO3, J. Chem. Eng. Jpn 49 (2016)111#8211;119. [16] X. Ma, H. Ma, J. Yang, P. Zhang, M. Liu, F. Lin, Review on preparation of potassium sulfate in system of KAlSi3O8-CaSO4-CaCO3 by calcination process, Chem. Miner.Process. 44 (4) (2015) 55#8211;61. [17] M.Y. Bakr, A.A. Zatout, M.A. Mouhamed, Orthoclase, Gypsum and Limestone for Production of Aluminum Salt and Potassium Salt, 1979 34#8211;35. [18] R. Nayak, J.R. Rao, A. Suryanarayana, B.B. Nayak, Alkaline Roasting as a Route for Extraction of Potassium from Feldspar, 1997 173#8211;175. [19] H. Tayibi,M. Choura, F.A. L#243;pez, F.J. Alguacil, A. L#243;pezdelgado, Environmental impact and management of phosphogypsum, J. Environ. Manag. 90 (2009) 2377#8211;2386. [20] B. Liang, W. Chao, H. Yue, L.I. Chun, H. Xie, Evaluation for the process of mineralization of CO2 using natural K-feldspar and Phosphogypsum to produce sulfate potassium, J. Sichuan Univ. 46 (2014) 168#8211;174. [21] C. Wang, H.R. Yue, C. Li, B. Liang, J.H. Zhu, H.P. Xie, Mineralization of CO2 using natural K-feldspar and industrial solid waste to produce soluble potassium, Ind.Eng. Chem. Res. 53 (2014) 7971#8211;7978. [22] R. Li, C. Li, H. Yue, B. Liang, L. Lv, Y. Wang, Effect of temperature schedule on extracting potassium by calcining, reductive deculturation and CO2 mineralization in the system of potash feldspar-CaSO4, J. Chem. Miner. Process. (2017) 20#8211;24
3. 毕业设计(论文)进程安排
2019.1~2019.3 查阅文献,撰写文献综述和开题报告,并修改开题报告。
2019.3~2019.5 实验阶段(制定实验步骤、实验方案、实验、分析实验数据、补充实验) 2019.5~2019.6 撰写论文、修改论文,准备答辩。