摘要
通过活性污泥对阿特拉津的等温吸附和动力学吸附试验,研究了活性污泥对阿特拉津的吸附特性。结果表明:活性污泥对阿特拉津具有一定的吸附能力,且加入HgCl后吸附效果较好,原因是抑制微生物活性的污泥,化学稳定性好,吸附能力也相应加强;另外,硝化污泥对阿特拉津的吸附能力要好于普通活性污泥;伪二级动力学方程和颗粒内扩散方程能更好地拟合活性污泥对阿特拉津的动力学吸附特征,表明吸附是化学吸附和颗粒扩散共同作用的结果。
The adsorption cha racteristics of activated sludge on atrazine have been studied ,through isothermal ad-sorption and kinetic adsorption experiments. The results show that activated sludge has certain adsorption capacity for atrazine. After HgCl has been added,its adsorption efficiency is better,because the sludge can restrain the activi-ty of microbes,its chemical stability is good,the adsorption capacity is strengthened correspondingly. In addition,the adsorption capacity of nitrifying sludge for atrazine is better than that of ordinary activated sludge. Pseudo-secondary-order kinetic equation and intra-particle diffusion equation can better fit the kinetics adsorption characteristic of ac-tivated sludge on atrazine. It indicates that the adsorption is the result of the common effect of chemical adsorption and particle diffusion.
出处
《工业水处理》
CAS
CSCD
北大核心
2014年第10期33-36,共4页
Industrial Water Treatment
基金
国家自然科学基金资助项目(51108299)
国家水体污染控制与治理科技重大专项经费资助项目(2012ZX07308-002)
天津市水质科学与技术重点实验室开放基金资助项目(No.TJKLAST-2011-10)
关键词
活性污泥
阿特拉津
等温吸附
动力学吸附
activated sludge
atrazine
isothermal adsorption
kinetics adsorption
