Dewatering unit main contains chemical treatment to allow decanter centrifuge get a better separation point . The chemicals will help suspended solids and fine solids gather together , so that decanter centrifuge can separate them out by centrifugal force .
Main Working Procedure For Dewatering Unit
1. Put flocculant into hopper and keep sure there are enough flocculant all the time .
2. Open water inlet and start auger to pre-mix flocculant , there will be water enter first compartment of mixing tank while pre-mixed flocculant drop into tank for mix , one set agitator installed to help .
3. Flocculant fluids will over flow to second compartment to allow it keep more than 30 minutes before goes into decanter centrifuge . While the flocculant fluids get more and more, it will over flow into third compartment .
4. There is one or two pump suction from third compartment and feed into decanter centrifuge .
5. There will be another pump supply mud to decanter centrifuge while flocculant fluids be pumping into centrifuge , there will be a pipe for flocculant fluids and mud pre-mix to gather solids particals . The solids out of centrifuge will be keep in a cuttings box and fluids part can be reused .
6. There is another part for chemicals mix which is a plastic tank with a small agitator for easy mix particals . Open water inlet and put correct qty of chemicals into tank , it will be mixed soon and then can be delivery into centrifuge by another pump .
Because of the chemical fuctions , the main solids particals will be separated out and product will be very clean and can be re-use on drilling site . Normally we will choose a high speed decanter centrifuge for the job as there are several options infact . Please contact GN Solids freely for more information .