2008 Volume 45 Pages 251-257
Water-washing treatment for MSW incineration bottom ash and fly ash were studied. Column test and the availavility test were performed in order to evaluate the long-term leaching behavior and washing effect. Increasing the frequency of washing is more effective for promoting elution rather than a liquid per solid ratio (L/S) or elution time. The cumulative amount of leaching in a column test was controlled to about 1/2-1/10 by water-washing for TOC and soluble salts such Na, Ca, K, and Cl-. On the other hand, removing heavy metals such as Cd were difficult.
