Study On Sorption Behaviours Of Organic Solutuon On Modified Oranobentonite

With the development of economics,domestic sewage amount is soaring.The traditional treatment of sewage is improving.The traditional bio-chemical technics is under the restriction of pH , temperature , salt concentration , poison and injurant.The polluted water from the pesticide plant,pharmacy plant and chemical plant can't reach the let-out standard through the traditional bio-chemical way.It's very cheap and efficient to using nonmetal mineral.to make best use of the advantages of these natural resource ,we should make a deeper research.The article is consisted mainly by two parts:Part one sums up the advantages and disvantages of the traditional sewage treatment technics and application of nonmetal mineral in water pollution control,summarize at length the history,research status and main machining technics and the exsited problems in the modified-bentonite.Part two study the sorption behaviours on p-nitrophnol and aniline mixed solution after have each studied the single solution sorption behaviours on organbentonite.The sorption behaviours on p-nitrophnol and aniline mixed solution show that:1)the Q_t of organbenotonite modified by shor-chain alkyl which exterior sorption is play a important role descend;organobenotonite modified by long-chain alkyl existed a coordinated sorption in the high concentration.2)the dual-cation organbenotonite which contains more CTMAB existed coordinated sorption in high concentration part.the distribution function takes great part of total sorption;thers is weak coordinated sorption in dual-cation organbenotonite which contains more TMAB.Competitive effect exsited after the exterior sorption position is saturated.The sorption on the actual waste water is investigated , which come to conclusion that sorption using organobentonite can be used as pre-treatment of traditional bio-technics.