Removal of Radionuclides from Laundry Wastewater Containing Organics and Suspended Solids Using Inorganic Ion Exchanger

Abstract Inorganic ion exchanger has the advantages of inexpensive, secondary solid waste easy to handle and certain selectivity. It also has an excellent performance on water purifying. In order to study laundry wastewater treatment, use natural zeolite, zeolite 4A and vermiculite for adsorption experiments. We found that zeolite 4A has the best ability to treatment radioactive waste water contains Sr 2+ , Cs + and Co 2+ . At room temperature and neutral environment, the adsorption percentage of zeolite 4A adsorb simulated radionuclides Sr 2+ , Cs + and Co 2+ reached 90%,and in alkaline environment, the adsorption percentage > 98.7%. In order to investigate the range of suspended solids and organics on zeolite 4A remove radionuclides from the radioactive waste water, utilize zeolite 4A to adsorb simulate radionuclides aqueous solution contains clay, sodium oleate to study the influence factors and levels. By orthogonal experiment, the effect of zeolite 4A on the adsorption order was suspended solids concentration > organics concentration > radionuclides species.