煤气化废水中有机物对磷酸铵镁结晶法去除氨氮的影响  

Effect of organics in coal gasification wastewater on ammonia nitrogen removal by magnesium ammonium phosphate precipitation

作　　者：胡学伟[1] 靳松望 王亚冰[1] 夏丽娟[1] 张雅琳[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650500

出　　处：《环境化学》2014年第11期1957-1962,共6页Environmental Chemistry

基　　金：国家自然科学基金(50908109;51178208;51368024);云南省教育厅重点项目(2013Z123);校企预研基金(2013YT02)资助

摘　　要：研究了杂环类(吡啶、喹啉)和酚类(间甲酚、二甲酚、苯酚)有机物对磷酸铵镁结晶法(MAP,magnesium ammonium phosphate)处理废水中氨氮的影响.研究表明,杂环和酚类有机物均对MAP法的除氮效果产生抑制作用,杂环类有机物的抑制作用大于酚类有机物,其中加入吡啶、喹啉、间甲酚、二甲酚、苯酚相比于对照组(21 mg·L-1),氨氮残余浓度分别升高45.17、56.66、43.01、50.68、49.72 mg·L-1.因为络合作用和吸附作用,多组分体系MAP晶体产生的抑制作用强于单一组分体系.Lab-scale batch experiments were carried out to investigate the effects of heterocyclic and phenolic compounds on the ammonia nitroger removal by magnesium ammonium phosphate（ MAP）crystallization. The morphology of the precipitates obtained was observed with microscope,and the concentration of heterocyclic and phenolic compounds was analyzed by HPLC. The results show that heterocyclic and phenolic compounds suppressed ammonium nitrogen removal by MAP crystallization. With the addition of pyridine,quinoline,m-cresol,dimethylphenol and phenol,the residual ammonium nitrogen increased by 45. 17,56. 66,43. 01,50. 68 mg·L- 1and 49. 72 mg·L- 1,respectively. The suppression of heterocyclic compounds was more significant than that of phenolic compounds. Because of complexation and adsorption,the suppression of multi-componet system is stronger than that of single-componet one on ammonium removal in MAP crystallization.

关 键 词：杂环类有机物 酚类有机物 MAP 氨氮 煤气化废水 

分 类 号：X784[环境科学与工程—环境工程]