Oily sludge treatment is very important: environmental protection, oil recovery, water separation. We just finish one project for COSL, the China largest offshore drilling company. You can check details from here:  COSL oily waste treated by GN centrifuge with chemical enhancement.  Recently, we receive one project requirements from Africa and they need us to offer proposal for oily sludge treatment. Their goal is to separate the oil and water, to incinerate the solids. And we offer 2 solutions below:

Option A: solution for oily sludge treatment – High G dryer + oil water separator + TDU

Step 1: Use high G dryer to treat the oily sludge and separate into two groups: solids and liquid.

Step 2: use oil water separator to separate liquids into oil and water

Step 3: use Thermal desorption unit to incinerate the solids.

Comments: this solution with better performance, but it is very costly because of TDU.

Option B: solution for oily sludge treatment – High G dryer + oil water separator + Solidification Unit

Step 1: Use high G dryer to treat the oily sludge and separate into two groups: solids and liquid.

Step 2: use oil water separator to separate liquids into oil and water

Step 3: use solidification unit to replace TDU in option A, to make the solids environmental friendly.

Comments: this solution is more cost-effective than option A.

Option C: solution for oily sludge treatment – Filter press + oil water separator + Solidification Unit / TDU

Step 1: Use Filter press to treat the oily sludge and separate into two groups: solids and liquid.

Step 2: use oil water separator to separate liquids into oil and water

Step 3: use solidification unit / TDU to deal with the solids finally.

Comments:  The costs of filter press in much higher than high G dryer, but the performance is almost same. We don’t recommend this one.

GN Solids Control with many years experience in solids control equipment solution and waste management solution. We can offer different kinds of treatment options per customers’ local requirements. We will recommend the most cost-effective solution per local government environmental protection policy.