氨氮废水处理技术

Ammonia nitrogen wastewater treatment technology

生产生活中产生大量氨氮废水,会造成水体富营养化,给人和生物带来危害。综述了处理氨氮废水的几种技术,包括空气吹脱法、折点氯化法、选择性离子交换和化学沉淀法等常见物化处理方法以及生物脱氮处理氨氮废水的研究进展和应用,对各种技术的原理、优缺点、应用等方面进行详细介绍并进行对比分析。物化法效率高、占地小、投资省、操作弹性大;生化法效率虽稍低,但具有工艺简单、成本低廉、无二次污染等特点,在高氮负荷下高效的工艺可以与低氮负荷下高效的工艺联用。

A large amount of ammonia nitrogen wastewater is produced in production and life,which will make the water body eutrophic and cause harm to humans and organisms.This article reviews several techniques for treating ammonia nitrogen wastewater,including common physical and chemical treatment methods such as air stripping,breakpoint chlorination,selective ion exchange,and chemical precipitation,as well as the research progress and application of biological nitrogen removal.The principles,influencing factors,advantages and disadvantages,and applications of various technologies are introduced in detail and compared and analyzed.The physicochemical method has high efficiency,small land occupation,low investment,and large operation flexibility.Although the biochemical method is slightly less efficient,it has the characteristics of simple process,low cost,and no secondary pollution.The efficient process under high nitrogen load can be combined with efficient process under low nitrogen load.