Tag: oil sludge treatment system

GN Containerized Oil Sludge Treatment Plant for Africa Client

GN Solids Control has successfully supplied a fully containerized oil sludge treatment system to an African client. This compact, skid-mounted plant is designed to treat oily waste from crude oil tank cleaning, refinery ponds, and drilling operations. The system enables the recovery of valuable oil, recycles water, and significantly reduces solid waste volume—all while meeting stringent environmental standards.
The entire plant is integrated into standard shipping containers, making it ideal for Africa’s infrastructure conditions where ease of transport, rapid deployment, and relocation between sites are critical. The modular design also allows future expansion and simplified maintenance.


The system consists of four core modules:
(1) Pre-Mixing Tank Module
The pre-mixing tank module is the first step in the treatment process. Raw oil sludge often has high viscosity, high solids content, and poor fluidity. This module heats, dilutes, and conditions the sludge to create a homogeneous slurry suitable for downstream separation.


(2) Shale shaker Module
After pre mixing, the sludge still contains large debris, stones, and coarse sand. If these particles enter the centrifuge directly, they will cause accelerated wear and reduce separation efficiency. The vibrating screen module removes these oversized solids as a protective step.
(3) Three Phase Decanter Centrifuge Module
Including three phase decanter centrifuge, its feeding pump, fluids catching tank and skid. This is the core separation unit of the entire plant. The three phase decanter centrifuge simultaneously separates oil, water, and solids from the conditioned sludge using high centrifugal force. It is particularly suitable for oily sludge with wide fluctuations in oil content and complex compositions.


(4) Chemical Dosing Module
Effective chemical treatment is essential for breaking emulsions and enhancing separation efficiency. The chemical dosing module automatically prepares and injects flocculants, coagulants, and demulsifiers into the process stream.
If you need a customized solution of oil sludge treatment system, pls contact with GN solids.

Containerized Tank Cleaning Oil Sludge Treatment System for Europe Customer

One set of containerized tank cleaning oil sludge treatment system are shipped to Europe customer.

As an OEM manufacturer of oil sludge treatment system in China, GN solids control design and produce standard oil sludge treatment system to treat drilling waste, waste oil sludge, oily water, and other oil waste. We have GNOST-01, GNOST-05 & GNOST-15 oil sludge treatment system with treating capacity 1 ~2 m3/h, 5m3/h and 15m3/h. Also we can produce customized oil sludge treatment system as client’s special requirement. The purpose to use GN oil sludge treatment system is to reduce the drilling waste in volume before feeding to Thermal Desorption Unit and separate the oil, water and solids, so that the power consumption and operation cost will be reduced and the treatment efficiency of TDU will be also improved.


The technical configuration including:
1. 20ft containerized pre-mixing tank module, 2 sets
2. Double deck shale shaker separation module, including the double deck shale shaker with anti splash cover and flushing system, mud agitator, liquid level meter, 1 set


3. Fully Hydraulic drive decanter centrifuge two phase separation module, 1 set , 18 inch bowl diameter, bowl length 61 inch, the typical treating capacity is 60m3/h and dewatering capacity is 15m3/h, The main motor is 100HP, the fully hydraulic drive system is from VISCOTHERM brand. The full hydraulic drive decanter centrifuge can be used in high ambient temperature for heavy mud with flexible bowl and differential speed. The bowl main components are made of duplex stainless steel SS2304 by centrifugal casting, which is superior to the performance of SS304 and SS316L.
4. Chemical dosing unit module, 1 set
All of the above modules are installed inside standard container with certificate for convenient movement. If you need a customized solution of oil sludge treatment system, pls contact with GN solids control

2 Sets GNOST-15 Oil Sludge Treatment System for Asia Customer

Recently 2 sets of GNOST-15 Oil Sludge Treatment System are ready for shipment to Asia customer. Each set of GNOST-15 Oil Sludge Treatment System including the components as below:


1. Feeding pump module, to pick up the oil sludge from waste pit and transfer to pre-mixing tank
2. Pre-mixing tank module, the function is to diluting, washing, heating and mixing of the oil sludge, so that the solids can be separated from the liquids in the further process of shale shaker, decanter centrifuge and three phase decanter centrifuge.


3. Coarse shale shaker separation module, to separate the coarse solids and reduce the solids content of the oil sludge, to protect the further decanter centrifuge, if the solids content is very high, the decanter centrifuge screw will be damaged and blocked easily.
4. GNLW-554 two phase decanter centrifuge module, the fine solids can be separated out from the decanter centrifuge by adding chemicals by chemical dosing unit
5. GNLWS-554 three phase separation decanter centrifuge module, to separate the fine solids, water and oil. The recovered oil can be reused or to be sold, the water can be reused in the circulation system or sent to waste water treatment facility, the solids discharged from shale shaker, two phase decanter centrifuge and three phase decanter centrifuge will be collected and sent to TDU for final treatment.


6. Chemical dosing unit module, to add chemicals in pre-mixing tank and 2 phase decanter centrifuge to improve the separation efficiency
7. Steam generator module, to provide hot steam to pre-mixing tank heating line , shale shaker separation tank module heating line, two phase decanter centrifuge tank heating line. There are electrical driven steam generator and diesel driven steam generator for option.
To get a customized proposal of the oil sludge treatment system, pls contact with GN solids sales.

22inch big bowl decanter centrifuges unit for Kuwait Oil Sludge Treatment Company

As a manufacturer of decanter centrifuge unit manufacturer in China, GN solids control can design and produce different size decanter centrifuge, including 9 inch centrifuge, 14 inch centrifuge, 18 inch centrifuge, 22 inch big bowl decanter centrifuge, 25 inch centrifuge, 30 inch decanter centrifuge. Except for two phase separation decanter centrifuge, GN solids also produce 3 phase separation decanter centrifuge for solids, oil and water. The decanter centrifuge applications including drilling rig solids control system, drilling cuttings treatment system, oil sludge treatment system, dewatering unit, waste water treatment system, mining tailings treatment and construction slurry cleaning, etc.


We have 2 models of 22 inch big bowl decanter centrifuge, GNLW553-VFD and GNLW554-VFD. The bowl diameter is 22 inch (550mm), The bowl length is 71 inch (1800mm) or 91 inch (2310mm). The designed capacity is 500gpm, the typical capacity is 400gpm. The max bowl speed is 3000rpm, the typical bowl speed is 2500rpm, the max G force is 2719G, the typical G force is 1888G. The bowl speed and differential speed can be adjustable by VFD control panel operation.
The oil sludge is a mixture of oil, water, and solid contaminants that can result from oil spills, tank cleaning, or oil production processes. Proper treatment and disposal of oil sludge are critical to mitigate environmental damage and recover valuable resources.


GN oil sludge treatment system working process is as below:
The vacuum pump pick up the oil sludge or contaminated soil from waste pit and discharge to pre-mixing tank, by adding chemicals, heating and agitating in the pre-mixing tank to improve the separation efficiency of the further separation equipments. After screening module, the treated fluids will be feed to big bowl decanter centrifuge to separate to solids and liquids ( oil water mixture), working with chemical dosing unit and heating if need.

Tank cleaning unit and oil waste separation system

As the manufacturer of tank cleaning unit and oil waste separation system in China, GN solids control has designed and produced customized tank cleaning unit and oil waste treatment system for our client.


GN automatic tank cleaning unit is a closed loop system to clean the mud tank , oil tank, chemical tank and slurry tanks. GN tank cleaning unit can supply fresh water to the high pressure tank cleaning machine/nozzle which is mounted inside the tank to be cleaned. By the tank cleaning continuous process, it will minimize the water consumption and manpower. The high pressure pump is installed on the one skid tank cleaning unit which is used to supply the fresh water to the high pressure cleaning nozzle. We have two different design for the tank cleaning unit, one is the one skid design, all the components are installed on one skid for convenient transportation; the other one is the 3 skid design, it is composed of suction and discharged skid, treatment skid, storage skid, each skid with DNV lifting frame for operation at offshore rig platform. We can provide CNEX, ATEX and IEC EX as per project requirement.


After treated by the tank cleaning unit, the fluids can be treated by three phase decanter centrifuge separation system for oil, water, solids separation, the treated water can be also supplied to the high pressure cleaning machine, the oil can be recovery and the solids for final disposal. The three phase decanter centrifuge GNLW364 is designed for solids liquid liquid separation, with capacity 5m3/h. The max speed is 3964rpm and max G force 3200G. The screw propeller is protected by tungsten carbide tiles for longer working life. The mud distribution nozzle is protected by tungsten carbide inserts.
For more information regarding tank cleaning unit and oil waste separation unit, pls contact with GN solids control.