Drilling Mud Recycling System

As an option of oil sludge waste water treatment equipment, inclined plate clarifier can replace the decanter centrifuge when the budget is limited, and the user can accept the high moisture in the discharged solids, and they have further treatment process to handle the waste. The oil water separator can replace the 3 phase centrifuge for low configuration option, when the user do not want to invest more for short period project. Both of the inclined plate clarifier and oil water separator have to use with chemical dosing system to add proper chemicals, this is to improve the efficiency of the separation.

The inclined plate clarifier can be used in different system for different applications, such as oil sludge separation system, waste water treatment unit, tank cleaning system, Power plant water treatment, Manufacturing process water, River water treatment, etc. We have different model with different flow rate for option from 7m3/h to 273m3/h.

The oil water separator normally used after the inclined plate clarifier to separate oil from water. The discharged water will be sent to waste water treatment facility for further treatment. We have different options with treating capacity from 6m3/h to 262m3/h.

The automatic tank cleaning system is a compact design closed loop system to continue clean the mud tanks, oil tanks, chemical tanks or slurry tanks. GN standard GNTC-30C tank cleaning system with 30m3/h treating capacity of waste water. The main equipment list including:
Chemical dosing system with static mixer, filter, inclines plate clarifier ( IPC) , buffer tank, bottom auger to transfer the tank bottom solids out, air operated pump to transfer the discharged solids, suction pump to transfer the waste to inclines plate clarifier. All of them are installed on the skid for convenient transportation. For more details, pls contact with GN solids control sales.

As a professional automatic tank cleaning system manufacturer in China, GN solids control recently finished production of one set of automatic tank cleaning system for our client in South America. Except for tank cleaning system, we also produce waste water treatment plant for oil water and solids separation system and water treatment plant for construction mud settlement and industrial waste water settlement.

Also we can produce oil water separator and Inclined Plate Clarifier which is used to removal of settleable solids in a variety of waste streams.This is normally used before the oil water separator to separate the ultra fine solids from the waste streams, this is to protect the oil water separator from damaged or blocked by the high solids content and reach better performance.

The slop processing capacity is 30m3/h and the clean water treating capacity 7.5m3.
The technical configuration is as below:
1) Filter to separate the coarse solids bigger than 2mm
2) The vacuum pump to pump the waste water from tank to Inclined Plate Clarifier
3) The chemical dosing unit working with static mixer for flocculation, so that the accumulated solids could be separated out easily.

4) The buffer tank as storage tank of clean water with liquid level meter to control the pumps automatically.
5) Different types of pumps including high pressure centrifugal pump, vacuum pump, air operated positive displacement pump.
All the equipments and components are installed on one skid for convenient transportation.
Why use GN tank cleaning system?

Some of our clients ever inquiry us that the decanter centrifuge working efficiency is pretty slow and the cost is very high, they are seeking for more economical and high efficiency way for waste water treatment, that is the reason we developed the different solutions for oil, water, solids separation.
For more details, pls contact with GN solids control.

As a professional decanter centrifuge manufacturer in China, GN Solids Control can produce decanter centrifuge from 9 inch to 30 inch bowl for different applications, also we can make customized designed decanter centrifuge for client’s special requirement. Our main goal is to provide the best solution for liquid and solids separation, to get the cleaner and drier solids as much as possible.

The GNLW224EP decanter centrifuge is mainly used for waste water treatment when the user need to get very pure clean water, it works together with dewatering unit by adding chemicals to help to separate the ultra fine solids easier. The internal structure is different with the normal centrifuge used for drilling fluids or other kinds of sludge.
The max bowl speed is up to 5000rpm , with the gearbox ratio is 95:1, the max gearbox torque is 1400N.M., with a 7.5HP back drive motor and 15HP main motor, the used is very easily to adjust the differential speed by VFD control panel, the smaller of the differential speed, with the same bowl speed, the clearer of the discharged water, the drier of the discharged solids. The max G force is up to 3077G. The bowl length is 924mm, the bowl diameter is 220mm, the ratio is 4.2, it means, the material fluids can stay in the centrifuge bowl for longer time, with the adjustable pond depth, it will definitely treat the fluids much better and make the discharged water much cleaner.
Sometimes the material to be treated is high corrosion fluids, so the centrifuge fluids touch components should be with high corrosion resistance. For example, the screw is made of stainless steel 304 by heat treatment to 1000℃, the bowl material is all made of SS316L, the collection box is made of stainless steel 304.
For more information, pls contact with GN solids control.

Recently 1 set of oil sludge treatment plant is almost ready for shipment to Asia client, it is under testing in our facility before shipment. The treating capacity for oil sludge separation is 5 m3/h. We also have standard or customized designed oil sludge separation system with 1 m3/h and 15m3/h for option.

The general working process is as below:
GN sludge vacuum pump transfer the oil sludge from the waste pit/pond to the pre-mixing modular, the pre-mixing tank equipped with heating lines which can heat the oil sludge to increase the flowability of the oil sludge and increase the separation efficiency of the shale shaker, decanter centrifuge. By adding the chemicals, it will also increase the efficiency of the further process steps. 2 mud agitator and one submersible slurry pump are installed on the pre-mixing tank with electric control system.
Then the pre-treatment oil sludge is transferred to the shale shaker to separate the coarse solids by the submersible slurry pump, it also reduces the solids content of the oil sludge so that the centrifuge could separate the fine solids easily. The shaker screen is specially made with big opening to separate coarse solids to protect the decanter centrifuge.
The screw pump feed the oil sludge to the decanter centrifuge, the discharged fluids is flow to the 3 phase centrifuge to separate the oil and water. The clean water and pure oil is flow to the buffer tank , which will be pumped to the oil storage tank and water storage tank. The water can be used for the circulation again.
The 20ft container loading dewatering unit will be used when necessary with decanter centrifuge, the chemical jetting is to make the oil mixture easily separated by the decanter centrifuge.
If you need a customized solution for waste oil sludge treatment, pls contact with GN sales for more information.

Recently GN solids control shipped 10 units of VFD decanter centrifuges to Middle east with IEC explosion proof motor and VFD control panel, these are high configuration decanter centrifuge, which can be widely used for dewatering unit, drilling fluids treatment, drilling cuttings treatment, waste water treatment, oil sludge separation system and all other kinds of liquids and solids separation.

The decanter centrifuge package including screw pump, telescopic skid, decanter centrifuge and VFD control panel, all in one skid for convenient transportation and operation.
Features of GN VFD control panel:

1) Positive pressurized VFD control panel with PLC smart control, with self cooling system and HMI interface, 3 motors VFD for main motor, back drive motor and feeding pump motor.
2) The motor and control panel is IEC EX certified for zone 1 application, suitable for operation temperature -20-55℃, especially suitable for Middle East area.
3) The inverter is ABB brand, and all the electrical components are option for ABB/ Scheneider/ Siemens.
4) The VFD control cabinet is made of stainless steel material for longer working life and better corrosion resistance.
5) The cable gland, power supply pin and aviation plug are all IEC EX certified.
Features of GN decanter centrifuge mechanical part:

1) Bowl material is made of duplex stainless steel 2304 or SS2205, the other parts of bowl is made of SS316, the collection box is also made of stainless steel 304 for better corrosion resistance.
2) The screw is made of stainless steel material and heating treatment up to 1000 degree, the opening screw propeller increase the treating efficiency.
3) The bearing is SKF brand
4) The screw protection is tungsten carbide tiles and repairable, the solids discharge port and fluids distribution port are all protected by tungsten carbide alloy and it is interchangeable.
For more information, pls contact with GN solids control.