共查询到20条相似文献,搜索用时 62 毫秒
1.
2.
3.
4.
复合式厌氧生物滤池处理焦化废水实验研究 总被引:1,自引:0,他引:1
以焦化废水为研究对象,采用不同规格的球形轻质陶粒作填料,在厌氧生物滤池中对焦化废水进行了处理,目的在于加强对难降解物质的去除及部分水解功能.实验结果表明,在停留时间9~12 h下,能同时兼顾有机物去除和废水的可生化降解性,为后续段对废水的进一步处理创造了有利条件. 相似文献
5.
6.
焦化废水是一种典型的难降解有毒废水,是一种世界公认难处理的工业废水。尤其是焦化废水中的氰化物,具有含量高、毒性大的特点,随意排放会污染水源和农田,造成鱼类的死亡和农作物的减产。因此如何高效价廉地去除焦化废水中的氰化物成为一个值得研究的问题。本文概述了国内外各种去除焦化废水中氰化物的处理方法和应用,主要分为生物法和物理化学法两大类。生物法利用微生物对废水中的污染物进行降解,但是单独使用生物法无法达到排放标准,所以要结合其他方法进行联合处理;简述了碱性氯化法、氰化铁沉淀法、Fenton工艺、活性炭吸附法、臭氧法、离子交换法、二氧化硫与空气法、膜生物反应器(MBR)和膜处理法等物理化学方法各自的优缺点,并提出了今后的发展方向;以期达到高效低耗处理焦化废水中氰化物的目的。 相似文献
7.
8.
A^2/O生物处理工艺在焦化废水处理中的应用 总被引:3,自引:0,他引:3
主要介绍了上海焦化有限公司污水处理改扩建工程中实际应用A^2/O生物处理工艺处理焦化废水的基本情况,试运行效果,比较A^2/O生物处理 焦化废水工艺与A/O生物处理工艺,并结合实践表明A^2/O生物处理工艺处理有毒难降解有机废水(焦化废水)的可行性。 相似文献
9.
10.
11.
绿色过程系统工程进展 总被引:8,自引:0,他引:8
介绍了由于可持续发展的要求、绿色壁垒的出现及企业形象认证等因素促使绿色过程系统工程作为一门学科分枝应运而生。与传统过程系统工程集中研究人为系统而把环境要求作为约束条件不同,绿色过程系统工程强调过程系统和自然系统之间关系,目的在于把人为系统放回到自然系统中去以形成经济一技术一社会和谐发展的统一体。评述了近20年来在该领域的工作进展。提出了绿色过程系统应成为一门大学教育课程。 相似文献
12.
汽车涂装的质量取决于涂装工艺、涂装材料及涂装工艺管理,涂装工艺管理是一个衡量涂装工业水平最重要的因素,也是影响涂装质量的最重要因素,正所谓三分材料七分管理。以奇瑞涂装车间12线为例介绍日常涂装工艺管理的相关工作。 相似文献
13.
综述国内开发的聚醇醚(NHD)法,改进的热钾碱溶液法,MDEA法等净化技术,以及这些方法在合成氨等工厂的应用情况。 相似文献
14.
Michael F. Doherty Ignacio E. Grossmann Constantinos C. Pantelides 《American Institute of Chemical Engineers》2016,62(9):2951-2958
This article and this issue of the AIChE Journal, is a tribute to Professor Roger Sargent who, as pioneer and intellectual leader of process systems engineering, has had a profound impact on the discipline of chemical engineering. Spanning more than five decades, his work has provided a strong mathematical foundation to process systems engineering through the development of sophisticated mathematical and computational tools for the simulation, design, control, operation and optimization of chemical processes. In this article we first give a brief overview of his career that included several leadership positions and the establishment of the Centre for Process Systems Engineering (CPSE) at Imperial College London. We next review his research contributions in the areas of process modeling, differential algebraic systems, process dynamics and control, nonlinear optimization and optimal control, design under uncertainty, and process scheduling. We highlight the tremendous impact that he has had through his students, students' students, and his entire academic family tree, which at present contains over 2000 names, probably one of the largest among the academic leaders of chemical engineering. Finally, we provide a brief overview of him as a modest and charming individual with a wonderful sense of humor. He is without doubt a true intellectual giant who has helped to expand the scope of chemical engineering by providing a strong systems component to it, and by establishing strong multidisciplinary links with other fields. © 2016 American Institute of Chemical Engineers AIChE J, 62: 2951–2958, 2016 相似文献
15.
17.
18.
综述国内外橡胶履带硫化成型工艺及设备的研究进展。介绍二次成型硫化法、一次成型硫化法和成型硫化一体化硫化法等橡胶履带硫化工艺及设备的特点,分析了目前橡胶履带生产过程中存在的问题及未来发展趋势。二次成型硫化法芯金定位不够精确,硫化不均匀,但对设备要求较低,投入少;一次成型硫化法芯金定位准确,硫化均匀,但对设备要求较高,投入大;成型硫化一体化硫化法相对于一次成型硫化法,芯金定位更准确,减少硫化成型步骤,但对硫化成型内模要求更高。未来计算机辅助设计和制造橡胶履带将成为发展方向。 相似文献
19.
Smart manufacturing: Handling preventive actuator maintenance and economics using model predictive control
下载免费PDF全文
![点击此处可从《American Institute of Chemical Engineers》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Liangfeng Lao Matthew Ellis Panagiotis D. Christofides 《American Institute of Chemical Engineers》2014,60(6):2179-2196
Integrating components and systems of the manufacturing process is an important area of research to enable the future development and deployment of the Smart Manufacturing paradigm. An economic model predictive control (EMPC) scheme is proposed that effectively integrates scheduled preventive control actuator maintenance, process economics, and process control into a unified methodology. To accomplish this goal, a Lyapunov‐based EMPC (LEMPC) scheme is formulated for handling changing number of online actuators (i.e., changing number of manipulated inputs). Closed‐loop stability under the proposed LEMPC is proven. Subsequently, the LEMPC is applied to a chemical process network used for benzene alkylation to demonstrate that the LEMPC can maintain stability and improve dynamic economic performance of the process network in the presence of changing number of available control actuators resulting from scheduled preventive maintenance tasks. © 2014 American Institute of Chemical Engineers AIChE J, 60: 2179–2196, 2014 相似文献
20.