环境空气中甲醛、烟气、二氧化硫去除研究

Study on formaldehyde,flue gas,sulfur dioxide removal in ambient air

本文以甲醛、香烟燃烧烟气、二氧化硫作为典型的PM2.5,采用吸收或降解的方法去除这三类污染物。实验用水作为参照,分别用不同的物质来吸收或去除甲醛、香烟燃烧烟气、二氧化硫。结果表明:用活性炭和过氧化尿素去除甲醛时,合理的实验条件是去除时间为60min,用量为30g;用稀硫酸吸收烟气中尼古丁时,硫酸浓度选择为15%;用氢氧化钠水溶液吸收二氧化硫时,合理的实验条件是吸收时间为10min,水溶液浓度为15%。

In this paper, formaldehyde, combustion gas of cigarette, sulfur dioxide were used as typical PM2.5 ,which were removed by absorption or degradation. In the experiment, water was regarded as reference, used different material to absorb or removal of formaldehyde, combustion gas of cigarette, sulfur dioxide. The results showed that reasonable experi- mental conditions were removing time of 60min, dosage of 30g when activated carbon and urea peroxide removed formalde- hyde. When dilute sulfuric acid absorb nicotine in combustion gas, the concentration of sulfuric acid was 15%. Sulfur di- oxide was absorbed with sodium hydroxide solution, the reasonable experimental condition were absorption time of lOmin, concentration of 15%.