A kind of waste oil scum dehydration treatment process
A treatment process and scum technology, applied in the directions of grease/oily substance/float removal device, separation method, immiscible liquid separation, etc., can solve the problems of no longer pumping, waste, environmental pollution, etc. The effect of scum leaving the factory, reducing processing loss and reducing environmental pollution
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Embodiment 1
[0018] Distillation method and Karl Fischer method are used to analyze the water content of the sewage oil scum extracted from the demulsification tank; the sewage oil scum with a water content of 95% is obtained. Dirhamnolipid with a biosurfactant purity of 99% was continuously added to the sewage oil scum. Rhamnolipids were diluted to a mass concentration of 0.5% before being continuously added to the demulsification environment. Carry out the dehydration reaction, the rhamnolipid addition amount is 700ppm, the dehydration reaction temperature is 55 ℃, the pH is adjusted to 5, the rotation speed is stirred at 100rpm, after the rhamnolipid and the dirty oil scum are mixed, then stand for 2 hours, Solid scum and oil float up, and the lower layer is a relatively clear water layer. After adjusting the pH value of the water in the water layer to 6~7, it can be discharged. The dehydration rate can reach more than 84.5%; the obtained concentrated scum still has good fluidity, whi...
Embodiment 2
[0020] Distillation method and Karl Fischer method are used to analyze the water content of the sewage oil scum extracted from the demulsification tank; the sewage oil scum with a water content of 99% is obtained. Continuously add biosurfactant dirhamnolipid with a purity of 99% to the dirty oil scum. Rhamnolipids were diluted to 1% mass concentration before being continuously added to the demulsification environment. The dehydration reaction was carried out, the rhamnolipid addition amount was 400 ppm, the dehydration reaction temperature was 60° C., the pH was adjusted to 5, and the rotation speed was 80 rpm. Stir until the rhamnolipid and dirty oil scum are evenly mixed, then let stand for 5 hours, the solid scum and oil float up, and the lower layer is a relatively clear water layer. After adjusting the pH value of the water in the water layer to 6~7, it can be discharged. The dehydration rate can reach more than 81.7%; the obtained concentrated scum still has good fluid...
Embodiment 3
[0022] Distillation method and Karl Fischer method are used to analyze the water content of the sewage oil scum extracted from the demulsification tank; the sewage oil scum with a water content of 90% is obtained. Dirhamnolipid with a biosurfactant purity of 99% was continuously added to the sewage oil scum. Rhamnolipids were diluted to 1% mass concentration before being continuously added to the demulsification environment. The dehydration reaction was carried out, the rhamnolipid addition amount was 1000 ppm, the dehydration reaction temperature was 45° C., the pH was adjusted to 5, and the rotation speed was 80 rpm. Stir until the rhamnolipid and dirty oil scum are evenly mixed, then let stand for 10 minutes, the solid scum and oil float up, and the lower layer is a relatively clear water layer. After adjusting the pH value of the water in the water layer to 6~7, it can be discharged. The dehydration rate can reach more than 63%; the obtained concentrated scum still has g...
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