This study was found out the installed filtrate clarification plant by flotation system in the WonjirnShoa Sugar Factory was inapplicable and ineffective. The average juices Brix to carry out byrnfloatation system are 65rn0rnBrix and above while the average Brix for the filtrate juice measured rnwere 8.94. The only possible method investigated was by decanting the filtrate juice in a separaternstream. This type of method of production system requires a number of processing parametersrnlike flocculant dosages, phosphate and lime additions. The method as well accounts of optimumrnprocessing conditions for better juice purification system. Then, the only identified factors in thisrnfiltrate clarification system were lime additions and flocculant dosages because of the amounts ofrnphosphate levels already found in the filtrate juice were 350 ppm which were sufficient for thernnext clarification process to be carried on. So the initial steps were the filtrated juice samplesrntaken from the filtrate juice tank and then measurements of the parameters such as purity, pH,rnphosphate contents and calcium contents were analyzed before the clarification system carriedrnout. Next flocculants were measured by weighing balance and they were prepared in solutionsrnform at a temperature of 50-60rn0rnC. Then, the juices passed through a heating medium until the rntemperature reaches 70-75rn0rnC. When the temperatures reached at the required range, the filtered rnjuices treated with limes at different pH levels. Then, the heating processes were also continuedrnuntil the temperature reaches 95-100rn0rnC. Next the prepared samples were taken and poured into rnthe 1000 ml graduated cylinders, and then different concentrations of flocculants (Separan) werernadded. Immediately, the parameters such as the settling rate, the height of muds formed in therncylinder, the colors, the turbidity, the percentage purity, the purity rise, calcium and magnesiumrncontents of the clear juice were measured. Finally, the effect of milk of limes starting 6.8-7.4 pHrnand flocculants 4-8ppm within clear juices were optimized by using Design Expert softwarernversion of 6.0.8. By using this software the responses such as pH of clear juices, the turbiditiesrnand the colors were the significant while the calcium contents did not show any significantrnvariations at 5% significance level. The optimal solutions obtained for flocculants dosages in thernrange of 4.05- 4.67 and limed filtrated juice pH at 6.84-7.01 combined respectively.