Wastewater generated from Zemilli Paint Factory creates a wastewater that has a potentialrnhazard to the environment by introducing various contaminants such as heavy metals into soilrnand water resources. The adsorption characteristics of Co2+ and Pb2+ ions found in waste waterrnonto a wood ash surfaces were investigated with respect to changes in the pH of solution,rnadsorbent dose and contact time. The aim of this work was to evaluate the fundamental aspectsrnof sorption of Pb (II) and Co (II) metal species using wood ash. Batch adsorption experimentsrnwere carried out in order to evaluate the metal uptake and to optimize condition of thernadsorption. The optimized value of pH, adsorbent dosage and contact time were obtained. Thernresults revealed that removal of 94% for cobalt at a pH of 8, 20gm/l adsorbent dose and 90rnminute contact time was obtained; and 97% removal of lead is obtained at a PH of 10, 20 gm/lrnadsorbent dose and 90minute contact time. pH of Sample is adjusted to the required level byrnusing 1M HCl and NaOH solution. Pb uptake increases with an increased with pH and becamernmaximum at a pH of 10. But, uptake of Co best achieved at pH 8. Adsorbent dose affect uptakernof both metal ions positively; and contact time gets equilibrium at 90 min of contact (shaking)rntime. The Langmuir isotherm was demonstrated to provide the best correlation for the adsorptionrnof lead and cobalt on to wood ash. Based on the result the pseudo second-order kinetic modelrnprovided the best correlation of the experimental data. In the desorption study the cationic formsrnof heavy metals were first complexes with a Na2EDTA in order to recover water-solublernpolymers and to obtain a heavy metal complexes with EDTA. This desorption study revealedrnthat, the higher desorption efficiencies of up to 90% for Co2+ and up to 78% for Pb2+ wasrnachieved by using the solution of Na2EDTA at Temperature of 30rnornC, 2 hour mixing time, solidrnto liquid ratio of 5 and 2M Na2EDTA as Desorption solution. The adsorption column wasrndesigned using different parameters for Zemilli Paint Factory waste water and on the basis of thernresults obtained from the experiment, by using such necessary data; also size the dimensions ofrnthe adsorption column. Wood ash is an abundant resource in every part of the country; it isrnrecommended that, wood ash can effectively be applied as an absorbent for the removal of Corn(II) and Pb (II) ions from paint waste water.rnKey words: lead, cobalt, heavy metal, wood ash, atomic adsorption spectrometer, paint, paintrnwaste water, Adsorption