氨氮废水处理工艺设计研究进展
摘 要
对于工业化进程不断加快的情况下，在带动经济和满足人们生活需要的同时，伴随而来的环境问题也日益突出，衍生出许多急需解决的污染难题。将氨氮废水直接排入水体，氮就会作为营养物质，水体中的微生物便利用它进行生存和繁殖，消耗水中大量的溶解氧，引起水体的富营养化，水体的生态平衡遭到破坏。氨氮可经过硝化作用产生了硝酸类盐，人类饮用达到一定值，使人体内的部分血红蛋白不能携带氧气，严重时会使器官和智力因缺氧受损，健康遭到破坏。若亚硝酸盐有较高的含量就会与人体蛋白质结合生成亚硝胺，是一种致癌物质，严重危害人体健康。工业氨氮废水处理是难点，不同类型的工业废水氨氮浓度也是千变万化，处理技术的选择和浓度密切相关。本文从废水中氨氮概况、对人体和植物的危害、氨氮废水处理工艺现状及发展趋势、吹脱工艺研究等内容进行了国内外研究进展相关阐述。
关键词：氨氮废水；吹脱法；废水处理；工艺设计
Research progress in process design of ammonia-nitrogen wastewater treatment
Abstract
As the process of industrialization is accelerating, the environmental problems are becoming more and more serious, and many pollution problems need to be solved urgently. When ammonia nitrogen wastewater is directly discharged into the water body, nitrogen will be used as nutrient substance, and microorganisms in the water body will use it to survive and reproduce, consuming a large amount of dissolved oxygen in the water, causing eutrophication of the water body and destroying the balance of nature of the water body. Ammonia nitrogen can be nitrated to produce nitrates, human drinking up to a certain value, so that part of the human hemoglobin can not carry oxygen, serious organ and intelligence due to hypoxia damage, health damage. If the nitrite has the high content will combine with the human body protein to form the nitrosamine, is one kind of carcinogen, seriously harms the human body health. In this paper, the general situation of ammonia nitrogen in wastewater, the harm to human body and plants, the present situation and development trend of ammonia nitrogen wastewater treatment technology, and the research progress of blow-off Technology was reviewed.
Keywords: Ammonia nitrogen wastewater; stripping; wastewater treatment; process desig
