亚硝氮对梧桐落叶有机物氯胺化中形成HNMs的作用研究  

THE FUNCTION OF NITRITE NITROGEN IN THE FORMATION OF HALONITROMETHANES DURING CHLORAMINATION OF ORGANIC MATTER MADE FROM FALLING LEAVES OF PHOENIX TREES

作　　者：肖卓群 钱玲亚 张西[1] 徐龙乾[1] 黄秋琳[1] 张鑫[1] 洪华嫦[1] 

机构地区：[1]浙江师范大学地理与环境科学学院,浙江金华321004

出　　处：《水处理技术》2015年第1期52-55,60,共5页Technology of Water Treatment

基　　金：国家创新训练计划(201310345021);国家自然科学基金(21107099)

摘　　要：以梧桐落叶有机物为实验对象,研究不同氯胺消毒条件下亚硝氮在卤代硝基甲烷(HNMs)形成中的作用,从而识别其关键影响因子。结果表明,亚硝氮的加入对梧桐落叶有机物氯胺化过程中HNMs的形成有明显的促进作用,而且在高氯胺含量、非中性(酸性或碱性)及低温条件下促进作用更为明显。由极差分析得知,影响亚硝氮进入HNMs分子的最大影响因子是p H,其次是氯胺含量,反应时间影响最小。HNMs的分布以三卤硝基甲烷(以TCNM为代表)为主,二卤硝基甲烷(以DCNM为代表)为辅,一卤硝基甲烷(以CNM为代表)则均没有检测到。其中三卤硝基甲烷的相对含量随着氯胺含量的增多、时间的延长、温度的上升而增加,但随着p H的上升而降低。The function of nitrite nitrogen in the formation of halonitromethanes （HNMs） during chloramination of organic matter made from the falling leaves of phoenix trees was investigated to recognize the key factor. The results showed that the nitrite nitrogen could enhance the formation of HNMs greatly, and the promotion of HNMs yields was significantly more obvious under the conditions of high chloramine dose, acid/basic condition and the low temperature. Range analysis revealed that pH value was the most important factor influencing the nitrite nitrogen promoting HNMs formation, followed by the dose of chloramine, and the reaction time. In addition, the dominant HNMs species was trihalonitromethane （TCNM）, dihalonitromethane （DCNM） was minor, and the chloronitromethane （CNM） was not detectable. The percentage yields of TCNM was generally increased with the chloramine dose, reaction time and temperature increasing, yet decreased with the pH value increasing.

关 键 词：氯胺 亚硝氮 卤代硝基甲烷 陆生来源有机物 

分 类 号：TU991.27[建筑科学—市政工程]