| Ultrasonic/ozone synergetic technique and chelating resins have a promising future in wastewater treatment.In this work US/O3 synergetic technique was studied for treating phenolic pollutants, dyestuff and solutions included several ingredients. Influence of gas flow rate, initial concentration and initial concentration on decomposition was discussed. Synergetic effect of US/O3 synergetic technology for several kinds of pollutants was studied. It is founded that US/O3 synergetic technology for dyestuff has the best effect.Several chelating resins were prepared by the reaction of thiosemicarbazide and cenospheres in different condition, and the cenospheres were prepared by suspension polymerization of styrene and maleic anhydride. The structures of the final products were characterized by elemental analysis and infrared spectra. Their adsorption capacities towards Zn(II), Hg(II), Pb(II) and Ag(I) were investigated in detail, the adsorption of chelating resins towards Ag(I) approximately fit the G.E.Boyd equation.Several chelating resins were prepared by the reaction of chloromethylthiirane and thiosemicarbazide in alkaline condition, and their structures were characterized by elemental analysis and infrared spectra. Their adsorption properties towards Zn(II), Hg(II), Pb(II) and Ag(I)were investigated in detail, The adsorption isotherms of chelating resins towards Ag(I) approximately fit the Langmuir equation.Several cenosphere type chelating resins were prepared by suspension copolymerization of p-phenylene diamine and chloromethylthiirane, and their structures were characterized by elemental analysis and infrared spectra. Their adsorption properties towards Ag(I) , Au(III), Zn(II), Cu(II), Hg(II), Pb(II) were investigated in detail. It was found that the chelating resins had high adsorbing capacities and adsorbing selectivety for Ag(I), the adsorption of chelating resins towards Ag(I) approximately fit the Langmuir equation and the Lagergren equation.
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