室内大气环境污染现状调查与分析..doc

环境工程系毕业设计（论文） 题 目：室内大气环境污染调查与分析 院 系： 环境工程系 专 业： 环境工程 班 级： 姓 名： 刘 飏 指导老师： 冯兴华 完成日期： 2007.06.01 07年6月1日 室内大气环境污染现状调查与分析 摘要： 本文结合当前室内环境污染现状，介绍了室内主要污染物的来源及其危害。通过对居室环境状况的调查，分析讨论了预防室内环境污染的措施及污染后的治理方案。并通过对光触媒催化原理的分析，揭示了光触媒对甲醛、苯、总挥发性有机化合物(TVOC)、氨等有害物质的降解效果。光触媒是一种以纳米级二氧化钛为代表的具有光催化功能的光半导体材料的总称。 光触媒在光的照射下，会产生类似光合作用的光催化反应，产生出氧化能力极强的自由氢氧基和活性氧，具有很强的光氧化还原功能，可氧化分解各种有机化合物和部分无机物，能破坏细菌的细胞膜和固化病毒的蛋白质，可杀来细菌和分解有机污染物，把有机污染物分解成无污染的水和二氧化碳，因而具有极强的杀菌、除臭、防霉、防污自洁、净化空气功能。室内环境 甲醛 光触媒 Indoor Air Pollution Investigation and Analysis Designer:Liu yang Tutor: Feng xing hua Abstract: This article gathers the current indoor envionment pollution present situation, introduced in the room the main polluantorigin and it’s the harm. Through to the room envionment condition investigation, after theanalysis discussed the preveution indoor environment pollution measureand the pollution fovernment plan. And through to light catalyst catalysis principle analysis, explained the light catalyst to the formaldehyed, the benzene, the total volatile orgauic compound (TVOC), the ammonia and so on the deleterious substance degeneration effect. Photocatalysis is a nano-sized titanium dioxide is represented by the photocatalytic function of the optical semiconductor material known. Photocatalyst light irradiation, will have a similar photosynthesis photocatalytic reaction produce strong oxidation of free OH and reactive oxygen species, and highly-redox function, can be oxidized decomposition of various organic compounds and inorganic, able to destroy the bacteria and cure the virus membrane protein can kill bacteria and to the decomposition of organic pollutants and decomposition of organic pollutants into clean water and carbon dioxide, So it has a strong bactericidal, deodorant, anti-mold, anti-pollution and self-cleaning, air purification function. Key word: