The treatment method for utilizing the discharge water
The treatment method for utilizing the discharge water finally discharged from the palm oil production and processing process and palm by-products includes: a cooling step, using a heat exchanger to recover and cool the waste heat of the discharge water finally discharged from the palm oil production and processing process; neutralization In the step of adding a neutralizing agent to the cooled discharge water to adjust the pH; in the step of adding a coagulant, in the step of adding a coagulant to the pH-adjusted discharge water; in the concentration step of concentrating the discharge water with the above-mentioned coagulant added, and in the concentration process In the dehydration step, the liquid phase in the discharge water is separated for the first time; in the dehydration step, the discharge water after the above concentration step is dehydrated to produce a discharge water dehydration filter cake with a moisture content of 70 to 80%, and the liquid phase is made during the dehydration process. Second breakaway;
The floating matter removal step is to supply a flocculant to the liquid phase separated for the first time in the concentration step and the liquid phase separated for the second time in the dehydration step, and put it into the pressurized floating tank to remove the floating matter; liquid fertilizer manufacturing step , aerate the liquid phase that removes the above floating matter for 3 to 7 days, and oxidize organic matter to produce liquid fertilizer; the mixing step is to dehydrate palm kernel shells, palm processing wastewater filter cake, palm kernel deoiling filter cake and the above dehydration The discharge water dehydration filter cake produced in the step is mixed; the molding step is to screen foreign matter in the mixed raw materials and then molded into a particle form; and the drying step is to dry the particles produced in the molding step.
At this time, the present invention is characterized by including: a pulverizing step of pulverizing the particles dried in the above-mentioned drying step; and mixing the pulverized particles in the above-mentioned mixing step so that the moisture content of the mixture reaches 40 to 60%.
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