14” diameter Screw Conveyor in one of the most popular size used for oil and gas drilling. GN Solids Control screw conveyor is designed with standard length 12ft per section. Clients can choose 1 section to max. 4 section for using with transfer length 12ft, 24ft, 36ft and 48ft. Maxx. Transfer length is 48ft. And 14” diameter x 36ft long and 14” diameter x 48ft long Screw Conveyor are the most popular models for drilling mud system and drilling waste management system.

GN Solids Control is capable to make screw conveyors which assembly complete with a variable speed drive or fixed speed gearbox drive, and with an CNEX / ATEX / IECEX electric motor for +55C degree ambient temperature. 380V ~ 600V and 50Hz ~ 60Hz. The auger cover can be supplied with GRP Grating or metal plate per clients request.

Plus, GN Solids Control is capacity to make CNEX / ATEX / IECEX DOL Starter for screw conveyor motors. The motor start control panel can be equipped with emergency stop, grab wire all along the auger length.

Besides all above, GN Solids Control can offer other optional protection features for GN made screw conveyors.
One of the additional safety feature is Audio / visual alarm system:

Audio / visual alarm system on auger control panel which will be automatically activated once the power is switched on followed by the actual auger startup with a safety delay time. Audio / visual alarm system to be in the OFF mode after some time once the auger starts operation.

Except for the Audio / visual alarm system, GN Solids Control can offer jet cleaning system with jet nozzles and flush pumps for the augers.

Normally, GN Solids Control screw conveyor color is green. GN Solids Control can offer customized paint color per clients request.Till now, GN Solids Control make blue auger, gray color, yellow auger, and wine red auger to suit for clients request. The screw conveyor will be dismantle to separate section before shipment: drive section, middle section and feed section. GN Solids Control screw conveyor will be packaged into wooden crates and made ready for shipment after ready.

GN Solids Control is capable to design and make both 2-phase decanter centrifuge and three-phase centrifuge for industry separation. GN Solids Control makes various size decanter centrifuge, the centrifuge bowl size includes 9 inch, 14 inch, 18 inch, 22 inch and 30 inch.

The 9 inch centrifuge is a mini size decanter centrifuge. It is also called as baby centrifuge. The 9 inch centrifuge is normally used in mining slurry treatment. It is also widely used for diamond drilling in the solids removal plant.

14 inch decanter centrifuge is widely used in oil and non-oil drilling field for drilling mud treatment. It is the most popular size for drilling mud treatment. There are fixed speed control, VFD control and FHD control for the 14 inch decanter centrifuge.

There are high speed and middle speed 14 inch decanter centrifuge. Clients can use VFD control or FHD control to change the centrifuge speed. For the fixed speed decanter centrifuge, clients can use different sizes pulley and belt to change speed. The middle speed centrifuge generates low G force for high gravity separation, like barite recovery. The high speed decanter centrifuge generates high G force for low gravity separation, for fine solids separation to reduce the mud weight.

22 inch big bowl decanter centrifuge is normally used in slurry treatment system for waste water dewatering. The centrifuge is driven by VFD control panel to adjust bowl speed and conveyor speed. It is also used for drilling waste management and other waste water treatment for for thickening sludges or mud The 2 centrifuge model is normally equipped with VFD control panel.

30 inch decanter centrifuge is the largest centrifuge GN Solids Control makes. Fewer company is capable to make such big size decanter centrifuge. The 30 inch huge size centrifuge is normally used for big diameter micro tunneling, and for mining industry slurry treatment.

Drilling Mud Mixing System is widely used for trenchless drilling machines. As during drilling activities, they will continually need to use drilling mud to cool down the drill bits, for lubricant, and for bringing the drilling cuttings, rocks and sands out of the hole.

Based on different sizes trenchless machines, different sizes and different capacity mud mixing unit will be used. Recently, some sets of drilling mud mixing units are ready for shipment. After final inspection, the mud mixing units will be shipped to various clients to support for their trenchless activities.

GN Solids Control offers explosion proof outdoor application control cabinet for all GN systems to offer one-stop solution to users.

GN high quality centrifugal pump is used in the mud mixing unit. The pump can be used as mixing pump, as well as transfer pump and water pump. 4 inch and 6 inch are optional to suit for clients request and to meet various mixing capacities. Tank size and tank capacity is customized per to meet clients request.

For big trenchless machines, or in the countries where have strict regulations on environment protection, besides drilling mud mixing system, the users also need to equipment drilling mud purification system to treat the dirty drilling mud and to reduce the solids and liquid waste which generated from the drilling activities. Shale shaker, mud cleaner, desander, desilter, decanter centrifuge, and sometimes, even dewatering unit will be used in drilling mud treatment system for trenchless machines.

Trenchless refers to the use of various rock and soil drilling machine, drilling rigs to excavate a very small part of the surface (generally refers to the small area excavation at the entrance and exit) through directional, directional drilling (HDD drilling), etc.. Trenless machines are used used to lay and replace pipelines, to make tullling, under sea tunneling, etc…

The new construction technology of repairing various underground pipelines will not hinder traffic, will not damage the green space and vegetation, will not affect the normal life and working order of shops, hospitals, schools and residents, and solve the problems of traditional excavation construction on residents’ lives. Disturbance, damage and adverse effects on traffic, environment, and surrounding building foundations, so it has high socio-economic effects.

GN Solids Control makes some high speed decanter centrifuge package for an European client. The high speed decanter centrifuge will be used for dewatering treatment.

The supply scope of the dewatering centrifuge package including following items:

1) It includes 3 ea GNLW224EP-VFD decanter centrifuge. It is a 9 inch bowl mini size decanter centrifuge, and it is also the smallest centrifuge model made by GN Solids Control.

GN Solids Control 9 inch decanter centrifuge is widely used for Industry Waste Water Treatment and for Diamond Core Drilling Fluids Treatment. The max. speed of the 9 inch decanter centrifuge is up to 5000GPM, and the typical speed can reach up to 4500 RPM. A VFD control panel is equipped for the high speed centrifuge to adjust the working speed from 0 to 4500 RPM. Clients can choose the suitable bowl speed and conveyor speed per material situation and to reach the best separation performance.

2) 3 packages of dewatering tank. The centrifuge feeding screw pump is equipped on each tank for compact design. The wetted parts of the feeding screw pump is made from wearing resistance material for long lifetime. The tank package can also be used as Dilution tank and self-priming centrate pump for the high speed decanter centrifuge.

3) A chemical dosing unit is equipped for the 3 ea high speed decanter centrifuge and the 3 dewatering tank units. All tanks, pipelines and internal plumbing are fabricated from 304 Stainless Steel. The chemical dosing unit is equipped with necessary dosing pumps, backup pumps, stainless steel agitators,Screw Conveyor for feeding powder chemicals, etc…

The chemical dosing unit capacity is designed and made to supply chemicals for the 3 decantering centrifuge unit. When the feeding screw pump suck slurry from the tank, chemical dosing unit will enhance chemicals into the feeding pipe. Slurry and chemicals will mixing and react at the feeding pipe before enter into decanter centrifuge.

GN Solids Control makes full line drilling mud solids control and drilling waste management equipment. In this case, GN Solids Control is capacity to make full function Packaged Mud System. Compared with other solids control suppliers who are only capacity to make a certain of separation equipment, GN Solids Control is more professional to make full function package drilling mud treatment system.

Applications of GN Solids Control mud recycling system covers but not limited to below fields:

Oil Drilling Solids Control System. A full set high pressure high temperature drilling mud mud system norally includes 4-stage solids control equipment, plus vacuum degasser or centrifugal degasser for 5-stage separation. 4-stage solids control equipment includes shale shaker, desander, desilter, decanter centrifuge.

HDD & CBM drilling & geothermal well drilling mud recycling system. HDD & CBM drilling mud processing system normally includes shale shaker, mud cleaner, mud agitator, transfer pump and mixing pump. In some case, decanter centrifuge will be used for dewatering treatment in HDD and CBM mud processing system. It depends on clients’ request.

Bored Pile and TBM slurry separation system. It is more popular called as desanding plant. As the mud from bore pile and TBM drilling with big size solids and big capacity flow. Normally only coarse separation shale shaker and desander will be used in Bored Pile and TBM slurry separation system. The shale shaker and desander are fixed on a small footprint mud tank and equipment with feeding pump, transfer pump and control system on the system tank.

Drilling waste management system. It is used after oil and gas drilling mud solids control system for zero discharge at rig site. While used together with drilling mud solids control system, people call it as pitless system.

Mining and industry solids and liquid separation system. The mud flow from Geological exploration core drill slurry separation system. Mud from Geological exploration core drill normally not big, but with big percentage ultra fine solids, mini size shale shaker GNZS752 and mini size 9 inch decanter centrifuge is widely used in this application.

Months ago, two sets of 20 cubic waste slurry treatment systems were used in a Singapore customer. The two sets of 20 cubic waste slurry treatment systems were designed and made by GN Solids Control per clients job site situation. They will be used to treat the micro tunneling slurry and piling slurry and used for dewatering treatment.

The waste slurry dewatering treatment system complies with Singapore’s national environmental protection requirements and adopts a containerized design. The system is mainly composed of below processing equipment.

1) A big bowl high speed decanter centrifuge. GNLW553C-VFD is used in this slurry dewatering system. It is a 22 inch big bowl decanter centrifuge for solids and liquid separation. The decanter centrifuge adopts the high-speed for dewatering treatment in purification system. The big bowl decanter centrifuge is a special customized centrifuge that can treat both ordinary drilling mud and waste drilling mud.

2) A flocculation system for chemical enchaning. It is a automatical chemical enhancing system. The flocculation system is also a specific flocculation system. It can be used to mixing and enhancing 3 kinds of chemical agents to meet Different needs of customers.

Both the high speed dewatering centrifuge and chemical dosing system are fixing into containers, which satisfies the integration, harmlessness and reduction in the urban construction process. It also adopts sealing and noise reduction treatment as a whole, which reduces the impact on the lives of surrounding residents during the construction process. GN Solids Control can also equipment air conditioner inside the container per clients request.

GN Solids Control mud purification system and slurry dewatering equipment have attracted much attention in the international market and in China domestic market. There are sufficient market cases in China. GN Solids Control slurry treatment dewatering systems are welcomed by many big companies in China, customers include China Railway Tunnel, China Railway Environmental Engineering. etc…

This week, a package of chemical dosing decanter centrifuge system is ready by GN Solids Control. After the final test and inspection before delivery in the factory, the decanter and chemical dosing unit will be deliver to port and export for a Middle East client.

The high speed big bowl decanter centrifuge and chemical dosing system will be used to treat waste water with oil. The slurry and sludge waiting for treatment is generated by Industrial Waste Water Treatment Facility. The wastewater is received from different industries such as Food, Chemicals, Oil and Gas, Workshops,……etc.

The wastewater is generated at the pre-treatment stage of the inlet effluent, which include oil and fat removal, then a chemical treatment by ferric chloride, caustic soda, and polymer.

Before choosing GN Solids Control wastewater decanter centrifuge dewatering unit, the client considered to use screw dryer machine for drying the solid and to reduce the volume to maximum possible solids size.
With the instruction of GN Solids Control, the client test the wastewater by lab tube centrifuge and send the performance data to GN Solids Control engineers. Based on the test data, GN Solids Control recommended big bowl decanter centrifuge GNLW454 which with big ratio of centrifuge bowl diameter and bowl length.

The bowl diameter and bowl length ratio is up to 4. The decanter centrifuge model GNLW454 is specially designed for wastewater and slurry treatment. A Screw pump is used to feed wastewater into decanter centrifuge for dewatering treatment.

The GNLW454 dewater centrifuge is used together with a 3000L chemical dosing system. The 3000L chemical dosing system is a 3-tank automatic power chemical dosing unit. Unlike normal chemical dosing system use Diaphragm pump as dosing pump, the 3000L 3-tank automatic power chemical dosing unit use screw pump as dosing pump. Although the cost of screw pump is higher than diaphragm pump, the feeding flow screw pump is more stable. The dosing screw pump is controlled by VFD control panel for changing the chemical dosing rate.

GN oily sludge separation system is widely used to treat oil waste and oil sludge generated from oil and gas drilling, from refinery, from tank cleaning, or to treat the slope oil slurry.

For different kinds of oil slurry and oil sludge, the separation and treatment system is not all the same. And if clients demands for the final output oil, water and sand are different, the processing and oil sludge treatment system will be different.

For international clients who want to get a suitable solution from GN Solids Control for oil sludge and oil slurry treatment, they can send their project and material information to GN Solids Control to let GN engineers know more about the material situation.

Clear photos and videos to show the oil sludge or oil sludge situation. They are for the the raw material that you want to treat by GN Solids Control equipment. If the clients already have some waste management treating equipment, the clients are suggested to send material information before the existing equipment treatment and after the existing equipment treatment.

The clients can stir and heat the oil slurry to 80℃. And show GN Solids Control the situation of the slurry by heating up to 80℃ by photos and videos. It is mainly to see the oil/water/soil settle down situation after heating treatment.

If clients have lab centrifuge or they can find lab centrifuge locally. They can test the material by lab tube centrifuge. Clients can separate the sludge and see if lad centrifuge can separate solids from the sludge. If they cannot find lab tube centrifuge for test. Clients can send a small bottle of material to GN Solids Control to do the test.

GN Solids Control is a professional manufacturer on drilling mud solids control, drilling waste management and oily sludge separation. Below are some of the normal questions clients want to get answers from GN Solids Control:

Q 1: What is included in the scope supply and what is the scope of components in the skid, agitation, level controls, flow meter, oil/water monitoring discharge?
GN Solids Control: There are totally 6 modules for a full package oil sludge treatment system.

1. Sludge vacuum pump feeding module;
2. Pre-mixing and heating module;
3. Shale shaker separation module;
4. 2-phase decanter centrifuge separation module;
5. 3-phase disc centrifuge separation module;
6. Chemical dosing module.

But not all modules are necessary for all applications. GN Solids Control will choose the necessary modules per material and job site situation. For example, for slope oil without big solids, shale shaker separation module is not needed. Necessary skids, agitators, levels controls to complete the operation of the system are included.

Q 2: Is there chemical injection dosing pumps.
GN Solids Control: Chemical dosing pumps and control panels for dewatering unit are all included in the Containerized Chemical Dosing System. All pipelines, electrical controls, valves, level meters are included in the package. For powder chemical and liquid chemicals, the chemical dosing system is different.

Q 3: Is there a heating coil in the tanks.
GN Solids Control: Heating coil (pipeline) included in the pre-mixing and heating tank. Heating machine excluded.

Q4: What is the pitch of the Decanter conveyor (scroll), or the Distance between scroll edge and bowl?
GN Solids Control: It is less than 1.2 mm

Q 5: The Slop Oil Package as you state is for drilling slops, has it ever been used for crude oil slops.
GN Solids Control: It is designed for Oil Sludge from
1) Crude Oil tank cleaning sludge
2) Refinery plant waste oil sludge
3) Drilling waste oil sludge

Q 6: PLC for equipment would be required to be English.
GN Solids Control: Yes. Operators can choose Chinese or English. Other customized operation langue is available.

GN Solids Control makes different sizes of Decanter Centrifuge and sludge transfer pumps. This weeks, some sets of Decanter Centrifuge and sludge transfer pump are ready for shipment, they will be exported to overseas clients which is an Environmental Engineering Company.

Below is the list of the Decanter Centrifuge and sludge transfer pump for the international Environmental Engineering Company:

1) Some sets of separation decanter centrifuge
It is a single motor small bowl high speed decanter centrifuge for 2-phase liquid and solids separation. The centrifuge model is GNLW224. It is a 9 inch baby centrifuge. GN Solids Control can make fixed speed control and variable frequency speed control for the small centrifuge. The centrifuge is widely used for waste oil and waste water treatment, like for environment protection companies, mining industries, and waste water treatment companies. It can also be used together with chemical dosing system for dewatering treatment.

2) Solids and sludge vacuum transfer pump
It is mobile type vacuum pump specially designed for high solids content liquid and solids transfer. The typical advantages of GN Solids Control vacuum pump is that, its suction length can up to 50 m. The discharge distance can up to 500 m or 1000 m depending on the pump models.

As the request from clients, GN Solids Control specially designed a vacuum sludge pump for Bilge sludge Cleaning and for vessel tank bottom cleaning. The cuction length of the bilge sludge vacuum pump can up to 80 m.

3) Centrifugal transfer pump
Centrifugal pump is also called as sand pump. It is widely used for slurry transfer and for mixing pump of mixing system.

GN Solids Control is also capacity to make explosion proof electrical control panels. GN Solids Control makes control panel to start and stop the centrifugal transfer pump. For easy layout, GN Solids Control makes customized pump base to support the centrifugal pump and control panel. The control panel and centrifugal pump motor is connected by cable when delivery from GN Solids Control factory. In this case, clients only need to connect the control panel to job site power supper, and then they can start to run the pump.