As a professional piling desander unit manufacturer in China, our desander unit has been widely used for bored piling project and TBM project in the world and domestic market. Recently we shipped 10 units of 500gpm desanding unit to Asia client. The configuration is as below:


1) 1 ea of 10 inch desander cone installed on the double deck shale shaker, the separation cut point is 40 microns.
2) The double deck shale shaker is installed on the V bottom mud tank, the feeding pump of the desander cone is installed on the mud tank as compact design.
3) No mixing hopper and mixing pump is included in the desanding unit, if the client need mud mixing unit, we will provide a separate jet mud mixer with a storage tank to connect with the desanding unit.
The working principal is as below:


1) The submersible slurry pump outside is feeding the bored piling or TBM slurry to the double deck shaker bottom screen, to separate the coarse solids from the slurry, the slurry is dropped into the mud tank, the centrifugal pump will transfer the slurry to the desander cone to separate the fine solids up to 45 microns. The double deck shale shaker can increase the treating capacity and better separation performance.
2) The clean fluids are flow to a separate mud tank for reuse, the user can connect the jet mud mixer with this tank to add chemicals and prepare for new fluids.
3) The centrifugal pump installed in the desander unit is produced by GN solids control, the pump head and all the parts are interchangeable with world famous brand centrifugal pump. The wear parts impeller, mechanical seal and pump casing is made of hard ductile iron alloy for better abrasion resistant.
If you need mud desander unit, pls contact with GN solids control.

2 sets of vertical cuttings dryer system are shipped to domestic client. GNCM-40B standard drilling waste management system configuration is as below:


1) Vertical cuttings dryer GNCD930E: this is the ideal equipment to treat the oil based drilling waste or Synthetic based drilling cuttings, the oil on the separation cuttings is below 5%, which can meet the disposal limit for most countries, if the client need it to be lower, TDU can be applied.


2) Decanter centrifuge GNLW363C-VFD: This is the best sold model decanter centrifuges among all the series. The decanter centrifuge max speed is up to 3900rpm, the normal speed is 3200rpm to treat the low gravity solids. The max G force is up to 3062G, the typical G force is 2062G, the cut point is 2 ~5 microns. Except for GNLW363C-VFD decanter centrifuge with 14 inch bowl diameter, we can also produce GNLW364EP-VFD to treat the waste water when the water clarity is required strictly. If the client need bigger treating capacity, we will suggest 18 inch, 22 inch, 30 inch centrifuge bowl.
3) Submersible slurry pump GN50YZ20-18A as feeding pump of decanter centrifuge, this is not the best option pump to feed the fluids to the decanter centrifuge, but it is vertically installed, it can save space on the mud tank compared with screw pump, also the maintenance cost is cheaper compared with screw pump. The screw pump works steadily to feed the decanter centrifuge, the flow rate can be adjusted by VFD control panel by changing the frequency.
4) 2 units of Mud agitator installed on the mud tank to mix the drilling fluids
5) Mud tank skid, the decanter centrifuge are installed on it, the vertical cuttings dryer is installed on the frame. The complete skid for convenient transportation.
For more information, pls contact GN solids sales.

GN Solids Control finished the oil exhibition at OTC 2019 in Houston, TX successfully. We have showed both of our traditional equipments and new technology at OTC. Centrifugal pump, Decanter centrifuge, shale shaker and composite material shaker screen are most popular products among our complete products line, which have been sold to over 70 countries in the world. We can provide OEM shaker screen for our own shale shaker and replacement shaker screens for world famous brand shale shaker. The composite material shaker screen working life is proved much longer and with larger screen area.


The new technology ViST vacuum screen, Sludge vacuum pump are introduced and many clients showed interests on them. The ViST unit are used together with the shale shaker, the purpose is to reduce drilling waste and recycle more drilling fluids. You can check the working video from GN website: http://www.gnsolidscontrol.com/video/vist-vacuum-screen-technology-for-shaker-test-video


It is installed under the last screen of the shale shaker or mounted externally whichever is convenient. The ViST increased the recovered drilling fluids volume and drier cuttings of the drilling waste. The less drilling waste is produced so the cost to treat the drilling waste is reduced. The operator can save money for drilling fluids and treat drilling waste.
The vacuum pump is not a new product, It has been widely used to transfer the oil sludge, waste oil, drilling cuttings, cements, dredging slurry, waste slurry, etc.


Both of the vacuum screen and vacuum pump are air operated, no need electricity power. It is convenient when electricity power is limited. The air compressor is required to provide the air.


We can also produce and customized design the tank cleaning system, waste water treatment system, complete set oil sludge separation system, drilling waste management system, mud recycling system and solids control system. For more information, pls contact with GN sales engineer.

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.