摘要
恒温静态条件下,在某污水厂进水中加入不同浓度的氯化铵,形成1#~6#水样,研究6种不同NH_3-N浓度的水样中,COD与NH_3-N浓度比值对污水降解能力的影响。结果表明:ρ(COD)/ρ(NH_3-N)约为6~6.5:1时,COD,NH_3-N及TN的协同降解效果最佳。COD与TN的降解过程符合一级动力学方程;NH_3-N的降解过程不完全符合一级动力学方程。通过污水厂进水COD与NH_3-N的浓度比值,可简单明了的确定进水水质是否适宜微生物的生长,从而通过适量补充碳源、氮源等方式,提高污染物的降解效率,减少污水厂水力停留时间。
Under the condition of constant temperature static, adding different concentrations of NH3-N in the sewage treatmentplantwater,which form1# to 6# water samples. Study on the degradation rule of CODandNH3-Nwith the 6 different concentration ofNH3-Nin water samples. The results show that the degradation effect of COD andNH3-N is the best when the ratio between CODandNH3-Nisat6-6.5：1.ThedegradationprocessforCODandTNfits for thecharacteristicmodel for firstorder reactionkinetics,butNH3-Ndoes not fit. Through the ratio between COD and NH3-N of the sewage plant water, it＇s can be quickly identified whether the waterquality suitable for the growth of microorganisms. Thus it can improve the degradation efficiency of pollutants and reduce the waterretentiontime ofwastewater plantsby adding carbonsource or nitrogensource.
作者
王娟
张洋
叶敏强
李丽
郑加云
WANG Juan;ZHANG Yang;YE Min-qiang;LI Li;ZHENG Jia-yun(Lianyungang Environmental Monitoring Center Station, Lianyungang 222001,China)
出处
《环境科技》
2018年第2期29-32,共4页
Environmental Science and Technology
作者简介
王娟（1984-）,女,江苏徐州人,工程师,硕士研究生,主要从事环境监测工作.
