摘要
通过静态吸附试验,考察了粉煤灰、鹅卵石和砂土3种基质对制革废水中COD、氨氮、氯化物、六价铬和总铬的吸附性能。结果表明:Langmuir模型能很好地描述3种材料的等温吸附过程。3种基质对制革废水中污染物的吸附能力不同,3种基质的吸附性能依次为粉煤灰>鹅卵石>砂土。研究人工湿地基质对污染物的吸附特征,有助于了解人工湿地去除污染物的机制,以及为设计高效率人工湿地用于污水处理提供理论依据。
Contaminant adsorption characteristics of fly ash, cobble and sand were studied through isotherm batch 2 experi- ments to the COD, NH4^＋4 - N, Chloride, Cr^6＋ and total chromium in tanning wastewater. Results show that Langmuir equations is fit for describing the adsorption isotherm. The adsorption capacities of three substrates are different among contaminants and the sequence is as follows： fly ash 〉 cobble 〉 sand. The study of contaminant adsorption characteristics of constructed wetland substrates would be helpful on understanding the mechanism of constructed wetland on contaminant removal, as well as on designing of high efficient constructed wetland that can be used for wastewater treatment.
出处
《中国皮革》
CAS
北大核心
2011年第11期5-9,共5页
China Leather
基金
国家科技支撑项目:村镇混合污水处理与综合利用技术研究和示范项目(2009BAC57B03)
关键词
人工湿地
基质
制革废水
吸附
constructed wetland
substrate
tanning wastewater
adsorption
