Volatile organic compounds（VOCs） are formed in some organic chemical production processes and the using of these organic products,which are harmful to the environment and human health.In this paper,the definition,sources,harm,relevant laws and regulations,emission conditions of the VOCs were mainly reviewed. The characteristics of existing VOCs treatment technology mainly including the chemical oxidation technique,physical separation technique,biological decomposition technique,light decomposition technique,electrochemical technique,the new type of composite technique etc.were introduced.Then,the principle,process,advantages,restrictions of VOCs treatment technology were expounded.The adsorption technique is one of widely used method. Catalytic combustion and non-thermal plasma are fastest developing approaches.The composite technique is a new developing method and has a good result without second pollution,which is an important direction of VOCs treatment.The choice of the appropriate VOCs treatment should be based on the main ingredients of concentration,gas flow rate,physical and chemical properties etc.with the consideration of economic benefits.The outlooks of composite removal techniques were discussed. Cost reduction and simple operation are the key issues of application.
Chemical Industry and Engineering Progress
volatile organic compounds
characteristics of technology