【摘要】 为控制某污水处理厂恶臭的污染,介绍了采用低温等离子体技术处理恶臭气体的技术原理和电源电压、电源频率和停留时间与降解效率的关系,用低温等离子体进行了分解特征恶臭气体氨气的试验,并从工程应用和试验研究方面说明了除臭设备的电参数、工艺流程。试验表明,增加电源电压、电源频率和停留时间可提高降解效率,但提高到一定程度后降解效率不明显;该技术在污水处理厂的运行结果表明,H2S、NH3、CH3—SH这类恶臭气体的去除率分别达到81.3%、88.1%、84.4%,可消除恶臭气体对周围环境的影响。更多还原

【Abstract】 Malodor removal has become an important and challenging issue in the world because of the detrimental influence on human beings and potential pollution of the environment.Traditional malodor control methods are limitative technically and economically.Low temperature plasma technology has been regarded as a promising technology to control gaseous pollutants.According to the malodor origin and the components of some sewage treatment plants,the low temperature plasma technology was applied to decompose the malodor so as to control malodor,and the principle of using the low temperature plasma technology to treat malodor was introduced.The different parameters such as the voltage of power,the frequency of power and retention time on degradating performance were tested with ammonia as the member of malodor,the results show that the degradating performance is improved with increasing the voltage of power,the frequency of power and retention time,but it is not obviously improved after these parameters being increased to certain degree,which would direct the engineering design.Then the equipment design conditions of deodorization,the system process flow,the craft parameter from the project application are explained.The results show that the removal rates of H2S,NH3,CH3—SH reach achieve 81.3%,88.1%,84.4% respectively,illustrating that the impact of malodor on ambient environment can be cleared.The results also show that this technology has advantages of high destruction efficiency,simple process,high operation efficiency,low energy consumption etc.更多还原