氨氮在含水层介质中的吸附影响因素分析

以沈阳市黄家水源地不同层位的含水层介质为研究对象,研究了含水层介质埋深、温度、p H等对氨氮吸附特性的影响。结果表明,含水层介质埋深对氨氮的吸附影响实质是含水层介质粒度大小的影响,含水层介质粒度越大,对氨氮的吸附能力越小。含水层介质对氨氮的吸附过程是一个放热反应,温度越高,含水层介质对氨氮的吸附能力越小。p H对氨氮吸附能力的影响可能与H+对NH+4的竞争吸附和NH+4的水解等有关,使含水层介质对氨氮的吸附能力随p H的升高而增强。

Analysis of factors affecting of ammonia adsorption in aquifer media

The effect of aquifer media depth, temperature and pH value on the adsorption characteristics of ammonia was studied by using aquifer media in different layers of water source in Shenyang city. The results show that the aquifer depth on ammonia adsorption effect is effect of aquifer particle size, aquifer particle size is larger, the adsorption capacity of ammonia is smaller; the adsorption process of aquifer media of ammonia is an exothermic reaction, the higher the temperature, the aquifer media on ammonia adsorption capacity the smaller; pH value may affect the ammonia adsorption capacity of NH4+ and H+ competitive adsorption and hydrolysis of NH4+ and so on, the adsorption capacity of aquifer media of ammonia with pH value increased.