This paper discusses the influence on the oxidation number of each sulfur atom when the charge possesses different position in thiosulfate,polythionate and so on.
On the basis of mechanism analysis and compare of CODCr degradation rate, parachlorophenol and aniline were found to be easier degraded by ferrate than nitrobenzene.
Active carbon used as preseparation agent, from which the SO42- is easily eluted has high adsorbance for four dyes.In addition, it is cheap and easily got as well.