西安市家庭裝修過(guò)程中典型污染物的動(dòng)態(tài)分布研究
[Abstract]:At present, indoor home decoration has become an important part of modern people's life. The problem of indoor air pollution is becoming more and more serious. Indoor environment is a new pollution phenomenon in today's society. This topic aims to study the dynamic distribution of pollutants in the process of home decoration and after the end of the decoration. By analyzing the quality of indoor air quality and the source of pollution in the whole process, it provides a reliable basis for the material that people should use in the different period of the decoration process and the pollution sources that should be prevented in the future.
The subject selected two newly decorated houses in Changan District of Xi'an as the research object, using the multi-functional formaldehyde, ammonia detector and FirstCheck+5000 portable gas detector in the way of field measurement. Each sampling point was tested for about nine months from the beginning of the decoration to the end of the year, and the formaldehyde in the indoor air was tested. The concentration of four kinds of pollutants of ammonia, TVOC and benzene were detected. The correlation analysis of four kinds of pollutants was analyzed by using SPSS data analysis software. At the same time, according to the measured data, the internal air quality of each test was evaluated by single factor evaluation method, comprehensive analysis method and grey statistical decision. Finally, the questionnaire was used to adjust the air quality. The method of investigation is used to understand the status of pollutants in indoor decoration for residents.
(1) there is at least one kind of pollutants exceeding the standard in the process of decoration of formaldehyde, ammonia, TVOC and benzene, and the whole stage of decoration for half a year. The absolute clean environment does not exist during the whole monitoring process. The pollution rate of the whole stage is over 90%, the heavy pollution rate is about 60%, and the pollution condition is serious.
(2) during the whole decoration, the concentration of the pollutants varies greatly with the different stages of the decoration. The concentration of formaldehyde will increase greatly in the woodworking stage and after the furniture, the content of ammonia in the indoor air will increase sharply in the wall processing and after the end of the woodwork; the concentration of TVOC and benzene is sticky in the wallpaper. Post and furniture go up quickly.
(3) the pollution of formaldehyde and ammonia has been effectively controlled in the whole decoration link. The pollution prevention and control of benzene and TVOC should attract the attention of the residents. From the results of the evaluation of the indoor air quality evaluation from the grey statistical decision method of two monitoring points, benzene has become the biggest factor affecting the quality of the indoor environment, and TVOC times.
(4) the decoration season has a certain influence on the indoor air quality. In the spring and summer decoration, the air temperature is high, the indoor pollutant release speed is faster, and the air circulation is frequent because of the longer window opening time. After the decoration, the north will have heating period, the interior air is in the beginning of the decoration to the end of the half of the year. After two high temperatures, the pollutant release rate is faster. The single pollutant content in the indoor air is lower than that in the house which is decorated in autumn and winter.
(5) the awareness of pollution prevention and control of the residents in Xi'an is relatively strong. They all pay attention to the national quality standards and green standards in the selection of the decoration products. However, because of the market products and the reasons for the poor removal of pollution, there are still physical discomfort at the end of the decoration, and the indoor air quality is not optimistic.
(6) according to the research situation, it is suggested that the state should increase the supervision of the building materials and decoration industry and increase the concept of green decoration; the large building materials manufacturers should speed up the research and development of low cost and pollution-free building materials; the owners and decorating practitioners should reduce the stay in the construction site and use positive measures to speed the room after the end of the decoration. The diffusion of pollutants, the use of plant decontamination methods to achieve the purpose of cleaning indoor environment.
【學(xué)位授予單位】:陜西師范大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:X51
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