Nitrobenzene has high toxicity, good stability and great difficulty in degrading in the water, which is easy to cause harm to human health and natural environment. Researchers at home and abroad have been attracted by how to deal with the nitrobenzene in wastewater. This paper discusses the main methods for the degradation of nitrobenzene wastewater currently used in physical, chemical and biological methods, and made a prospect of the research. Finally, it is pointed out that the integrated of various methods for nitrobenzene degradation is the focus of future research.

In the actual systems, due to the computation accuracy or parameter drift affecting the controllers, the control effect of the original design would be inevitably destroyed. To deal with this problem, the nonfragile guaranteed cost control of singular Markov jump system with time delays was considered. Under the conditions of perturbation with addition and multiplication properties, the sufficient existence conditions for control gain were expressed by linear matrix inequalities respectively. In the case, the guaranteed cost control of singular Markov jump system with timedelay could be achieved. Finally, the effectiveness of the method was verified by a numerical example.