Sludge Dewatering Screw Press

A sludge dewatering screw press is a type of mechanical equipment used in wastewater treatment plants and other industrial applications to separate liquids from solids in sludge. Sludge, which is a byproduct of various processes such as wastewater treatment, can contain a significant amount of water. The dewatering screw press helps to reduce the moisture content of the sludge, making it easier and more cost-effective to handle and dispose of. Sludge is fed into the screw press through an inlet hopper or conveyor system. The sludge may be pre-treated or conditioned to improve dewatering efficiency. Inside the screw press, there is a rotating screw or auger mechanism. As the screw rotates, it moves the sludge along the length of the press. Along the length of the screw press, there are dewatering zones where the sludge is subjected to increasing pressure. This pressure helps to squeeze out the water from the sludge solids. The pitch of the screw gradually decreases along the length of the press, which leads to increasing compression of the sludge. This compression further aids in separating the water from the solids. Some sludge dewatering screw presses are equipped with a perforated or mesh screen along the length of the press. This screen helps to separate the liquid (filtrate) from the solids as the sludge is compressed and forced through the screen. The separated liquid (filtrate) is collected and discharged through an outlet, while the dewatered sludge cake is discharged from the end of the press. The dewatered sludge typically has a higher solids concentration and lower moisture content compared to the original sludge. Benefits of using a sludge dewatering screw press, reduction in sludge volume: By removing water from the sludge, the volume of sludge is significantly reduced, leading to lower transportation and disposal costs. Increased solids concentration: The dewatered sludge cake has a higher solids concentration, which may facilitate further processing or disposal. Lower environmental impact: Dewatered sludge is easier to handle and may be more suitable for environmentally friendly disposal methods such as composting or incineration. Overall, sludge dewatering screw presses are an efficient and effective solution for reducing the moisture content of sludge, providing economic and environmental benefits for wastewater treatment plants and industrial facilities.

2020.09.10 screw press dewatering machine

Sludge Dewatering Centrifuge

A sludge dewatering centrifuge is a specialized piece of equipment used in wastewater treatment plants, industrial processes, and other applications where there’s a need to separate solids from liquids efficiently. Sludge is a semi-solid material produced during the treatment of wastewater, and dewatering is the process of removing water from this sludge to reduce its volume and make it easier to handle and dispose of. The centrifuge works on the principle of centrifugal force, which is the force exerted on an object moving in a circular path due to its inertia. In a sludge dewatering centrifuge, sludge is fed into a rotating drum or bowl. As the drum rotates at high speed, centrifugal force pushes the solids to the outer edge of the drum, while the liquid (water) is forced towards the center. The separated liquid is typically discharged through a separate outlet, leaving behind dewatered sludge cake on the inner wall of the drum. This dewatered sludge cake has a much higher solid content and lower moisture content compared to the original sludge, making it easier and more cost-effective to dispose of or further process. Sludge dewatering centrifuges come in various types, including decanter centrifuges, disk-stack centrifuges, and basket centrifuges, each with its own advantages and applications. Decanter centrifuges, for example, are commonly used for thickening and dewatering applications in wastewater treatment plants due to their continuous operation and high throughput capabilities. With our expertise and how we develop our equipment, using the best material there is to offer. GN uses duplex stainless steel SS2205 and SS2304 for the casting which is better than the SS304 and SS316. Also flexible pond depth adjustment for different material separation. The air-operated spring for assisting open of the cover with safety locking system. Our centrifuges go through three stages balancing process to maximize balancing of the centrifuge. It goes through a low speed of 1800 RPM balancing and real operation high speed balancing as well. The internal parts such as the screw is protected by interchangeable tungsten carbide tiles for longer life and easy maintenance. Also the screw is made up of stainless steel with heat treatment and the opening impeller will improve the centrifuge capacity. It comes with the option of single lead or double lead screw. GN centrifuge is well used over the world and is being required by a lot more operations due to its cost and the results of its operation.


Shale Shaker




Mining vibrating screen

A mining vibrating screen is a piece of equipment used in the mining industry to separate materials based on their particle size. It employs vibrating motors or exciters to generate vibrations, which cause the material on the screen surface to move in a controlled manner. These screens are often used in various stages of the mining process, such as primary screening, scalping, or dewatering. Here are some key features and functions of a mining vibrating screen. Screening Efficiency –  Mining vibrating screens are designed to efficiently separate materials of different sizes. They utilize different screen deck arrangements and screen openings to achieve the desired separation. Vibration Mechanism – Vibrating screens use either eccentric shafts with eccentric weights or electromagnetic vibrators to generate vibrations. These vibrations cause the material to move across the screen deck, facilitating separation. Screen Deck Configuration – Screens can have single or multiple decks, depending on the application. Multiple decks allow for the separation of materials into different size fractions simultaneously. Screen Media – The screen media, such as woven wire mesh, polyurethane panels, or perforated plates, play a crucial role in the screening process. The choice of screen media depends on factors like the material being processed, required throughput, and wear resistance. Dewatering – In some cases, mining vibrating screens are used for dewatering purposes, removing excess moisture from the screened material. This is especially important in applications where the final product needs to meet certain moisture content specifications. Heavy-duty Construction – Mining vibrating screens are typically built to withstand harsh operating conditions in mining environments. They are constructed with robust materials and reinforced components to ensure durability and longevity. Adjustability and Customization – Many mining vibrating screens offer adjustability in terms of amplitude, frequency, and angle of inclination to optimize performance for specific applications. Maintenance and Safety – Proper maintenance is essential to ensure the smooth operation of vibrating screens and prevent downtime. Additionally, safety features such as guards and safety switches are incorporated to protect operators from potential hazards. Overall, mining vibrating screens are indispensable equipment in the mining industry, contributing to efficient material handling, processing, and separation. They play a crucial role in improving productivity and product quality in various mining operations.


2023.10.10 Large Linear Vibrating Screen


2323.10.10 Large Flip Flow Screen

Vacuum Degasser

A vacuum degasser is a piece of equipment used in various industries, including but not limited to oil and gas, chemical processing, and food and beverage production. Its primary function is to remove dissolved gases, primarily oxygen and carbon dioxide, from a liquid mixture. The GNZCQ is our vacuum degasser which meets the needs of any application, installed after the shakers. Each degasser effectively and efficiently removes gases from gas-cut mud and ensuring that the proper mud weight is pumped downhole. The degassers are able to aid in the prevention of potential blowouts. At GN, our degasser is self contained, and is monitored by level sensor to protect over suction of the fluids. In many industrial processes, the presence of dissolved gases can be detrimental. For example, in the oil and gas industry, dissolved gases in drilling mud can lead to various issues such as reduced drilling efficiency, corrosion of equipment, and decreased performance of downhole tools. Similarly, in food and beverage production, dissolved gases can affect the taste, appearance, and shelf life of products. A vacuum degasser typically consists of a vessel or tank equipped with a vacuum pump. The liquid mixture containing dissolved gases is introduced into the vessel, and the vacuum pump creates a low-pressure environment inside the vessel. As the pressure drops, the solubility of gases in the liquid decreases, causing them to come out of solution and form bubbles. These bubbles are then removed from the liquid by the vacuum pump, effectively degassing the liquid. Vacuum degassers come in various designs and sizes, depending on the specific application and volume of liquid to be treated. Some degassers may use additional components such as baffles or trays to enhance the degassing process. The efficiency of a vacuum degasser depends on factors such as the vacuum level achieved, the contact time between the liquid and the vacuum, and the design of the degasser vessel. Overall, vacuum degassers play a crucial role in ensuring the quality and performance of industrial processes by effectively removing dissolved gases from liquid mixtures. Our vacuum degasser can actually work as a big agitator for the drilling mud, which helps the treatment for desander and desilter. Playing multiple roles to assist the operation and help with the process in multiple roles. Our degasser could be used in multiple industries and is among a great equipment for your operations system.



Cutting Dryer

An oil and gas cutting dryer, also known as a cuttings dryer, is a critical piece of equipment used in the process of drilling for oil and gas. During drilling operations, drilling mud or drilling fluid is used to lubricate the drill bit, carry cuttings (rock chips) to the surface, and provide stability to the wellbore. However, this drilling mud becomes contaminated with drill cuttings and other solid particles as it circulates through the well. The oil and gas cutting dryer is designed to separate these solid particles from the drilling mud, allowing for the reuse of the mud and the disposal or further treatment of the cuttings. This separation process helps to maintain drilling efficiency, reduce environmental impact, and comply with regulations regarding drilling waste disposal. The basic operation of a cutting dryer involves several stages. Feed Inlet is the contaminated drilling mud, along with the drill cuttings, enters the cutting dryer through a feed inlet. Screening and separation processes  inside the cutting dryer, the mud and cuttings pass through a series of screens or sieves. These screens allow the mud to pass through while retaining the solid cuttings. Drying stage occurs after separation, the cuttings are subjected to a drying stage. This can involve centrifugal force or other mechanisms to remove excess moisture from the cuttings, making them easier to handle and transport. Discharge of dried cuttings occur once dried, the cuttings are discharged from the cutting dryer, typically into a collection bin or conveyor for further processing or disposal. Recovery of clean mud happens when  the cleaned drilling mud, free from solid particles, is collected and returned to the drilling operation for reuse. Oil and gas cutting dryers come in various designs and configurations, including vertical and horizontal models, depending on the specific requirements of the drilling operation. They play a crucial role in the overall efficiency and environmental stewardship of oil and gas drilling operations by facilitating the recycling of drilling fluids and reducing the volume of waste generated. It can be used for oil based mud or water based mud. In order to be used in the water based operation, it needs a special water injection system for not getting build up or the mud causing it to jam. With the best products used to develop our system, such as our bearings from FAG, we have a great product with amazing productivity.

drilling fluid recycling system

A mud recycling system, also known as a mud cleaning system or drilling fluid recycling system, is a crucial component in the process of drilling for oil and gas, as well as in other drilling operations such as those in geotechnical engineering or mineral exploration. During drilling, a mixture of water, mud (or drilling fluid), and solids is pumped down the drill pipe to lubricate the drill bit, carry away drill cuttings, stabilize the borehole, and maintain pressure. This drilling fluid becomes contaminated with drill cuttings, rock fragments, and other debris as it circulates through the wellbore. A mud recycling system is designed to remove these contaminants from the drilling fluid, allowing it to be reused in the drilling process. The system typically consists of several components such as. Shale Shakers,These are the first line of defense in a mud recycling system. Shale shakers use vibrating screens to separate larger solids from the drilling fluid. Desanders and Desilters: After passing through the shale shakers, the drilling fluid may still contain smaller particles. Desanders and desilters are hydrocyclone-based devices that further remove fine solids from the mud. Centrifuges: Centrifuges are used to separate even finer solids from the drilling fluid. They operate on the principle of centrifugal force, spinning the mud at high speeds to separate solids from the liquid. Mud Tanks: These are large tanks used to store and process the drilling fluid as it undergoes recycling. Different compartments within the mud tanks allow for various stages of processing. Mixing Equipment: Mixing equipment is used to add chemicals or adjust the properties of the drilling fluid as needed. Pumps: Various pumps are employed to move the drilling fluid between different components of the mud recycling system. Control Systems: These systems monitor and regulate the operation of the mud recycling equipment, ensuring optimal performance and efficiency. By recycling the drilling fluid, mud recycling systems help reduce waste, minimize environmental impact, and lower drilling costs by reducing the need for fresh drilling fluid. They also contribute to safer drilling operations by maintaining consistent drilling fluid properties, which is crucial for well stability and control. At GN we can provide and manufacture any system according to clients needs and wants. From a single cone to a complete turnkey systems. We can proudly built them.

1500 GPM Drilling Mud Recycling System

Shale Shaker

A drilling mud shale shaker is a critical piece of equipment used in the process of drilling for oil and gas. It is part of the solids control system, which is designed to remove solid particles from the drilling fluid or mud. The shale shaker works by vibrating the screen or mesh, allowing liquid to pass through while separating and removing larger particles. During the drilling process, a mixture of water, clay, and various chemicals known as drilling mud is circulated down the drill string and back up to the surface. As the drilling mud returns to the surface, it carries with it cuttings and other solid particles. The shale shaker is employed to separate these solid particles from the mud. The shale shaker utilizes a series of vibrating screens or mesh to separate the solids from the liquid. The screens are designed with different-sized openings to allow for the classification of particles based on their size. The shale shaker vibrates, causing the drilling mud to pass through the screens. The vibrating motion helps to convey the cuttings off the screens and prevents them from clogging. The separated solids are collected and typically discharged into a waste pit or container for further disposal. The use of a shale shaker is essential in maintaining the properties of the drilling mud, ensuring it remains effective in the drilling process. Solids control is crucial for drilling efficiency, equipment protection, and environmental compliance. As it assist with waste management and it is the first and upmost important process for the solids control. A shale shaker can determine the result of your whole mud cycle process. It is like a great start, that will lead a great process. Unlikely if you have a bad start then you will struggle later on. It is how crucial it is have the knowledge of the shale shaker. The right set of screens and the angels are all little details that make a huge difference in your process of solids control. At GN our shakers are well respected and used by great number of valued clients, with really important projects around the world. That is how we make a difference in your process and how we develop and keep up to date technology in our shale shakers.


Shale Shaker

The recovery of drilling fluids using a shale shaker is a crucial process in the drilling industry, particularly in the context of drilling for oil and gas in shale formations. Shale shakers are a type of equipment used in the solids control system to remove large solids and cuttings from the drilling fluid, also known as mud. The recovery of fluids involves separating the drilling fluid from the drilled cuttings, allowing the fluid to be reused in the drilling process. Our GN shale shakers are build with best techniques and user friendly. Such as our prementioned composite frame screen with gear unit for fast screen change and longer screen life. Also our shakers are deigned and heat treated to with hold G force up to 8.0 G. One of most unique feature is our patent shaker screen seal technology for avoiding fine solids bypass and to have easy maintenance. At GN we use Italy OLI or US Martin brand vibration motors. GN control panel is used from the best of components in the market, such as Siemens or Schneider. Here is how a shaker works or processes the material. The drilling process, drilling fluid is circulated down the drill pipe and back up to the surface. This fluid serves various purposes, including cooling the drill bit, carrying away cuttings, and providing stability to the wellbore. The drilling fluid, after carrying cuttings up to the surface, contains a mixture of liquids and solids. The solids control system, which includes the shale shaker, is employed to separate the cuttings from the drilling fluid. The shale shaker is a vibrating screen that uses a series of mesh screens to separate the larger cuttings from the drilling fluid. As the fluid and cuttings mixture is fed onto the shaker screen, the vibration separates the cuttings, allowing the drilling fluid to pass through the screens. The separated drilling fluid, now free from larger solids, is collected in a tank beneath the shale shaker. This recovered fluid can then be sent back into the drilling process, contributing to cost savings and environmental sustainability. The cuttings, once separated from the drilling fluid, are typically collected and transported for disposal. Proper disposal methods are important to comply with environmental regulations. Efficient fluids recovery with shale shakers is essential for maintaining drilling operations, reducing costs associated with drilling fluid management, and minimizing environmental impact through responsible waste disposal practices. It’s worth noting that the specifics of the process can vary depending on the type of shale shaker and the characteristics of the drilling operation.

Desander Desilter

Desanders and desilters are equipment used in the drilling industry, specifically in the context of drilling mud systems. These systems are crucial in oil and gas drilling operations for various purposes, including maintaining wellbore stability, cooling and lubricating the drill bit, carrying cuttings to the surface, and preventing blowouts. A desander is a piece of equipment designed to remove sand and silt-sized particles from drilling fluids. It typically operates after the shale shaker and degasser in the drilling mud system. The desander uses centrifugal force to separate solid particles from the drilling mud. The mud enters the desander, and through centrifugal motion, the heavier particles are thrown to the outer wall and eventually discharged, while the cleaner mud is directed back into the mud system. A desilter is similar to a desander but is designed to remove finer solids, typically in the range of 15 to 74 microns. It operates downstream from the desander and is used to further refine the drilling mud by removing smaller particles. Like the desander, the desilter uses centrifugal force to separate the solids from the mud. It consists of hydrocyclones that generate a strong swirling motion, allowing the separation of finer particles. Both desanders and desilters play crucial roles in maintaining the properties of the drilling mud, ensuring its effectiveness in the drilling process. Efficient removal of solid particles is essential for the drilling equipment’s longevity, preventing damage and optimizing drilling performance. These components are part of a broader system that includes other equipment like shale shakers, mud pumps, and mud agitators, all working together to maintain the drilling mud’s quality throughout the drilling process. With the use of gravitational and centrifugal forces, it creates the effect where heavier content exits through the bottom and lighter content to the top. With these two equipment attached to a shale shaker makes up a mud cleaner system. As being the second stage process for the mud cycles, it is really important how you set up your system and manage it. You can run your product more than one time through these machines, and that makes it easier for the operation and the product that you are looking for.


Dewatering Decanter Centrifuge

The T series GN Decanter Centrifuge is the dewatering type of centrifuge.  It ranges from 9in to 30in bowl. A dewatering centrifuge is a specialized type of centrifuge used for separating solids from liquids in a slurry or suspension. The primary purpose of a dewatering centrifuge is to remove water or liquid content from solid materials, leaving behind a drier substance. This process is commonly used in various industries such as wastewater treatment, mining, food processing, and chemical manufacturing. Also in drilling mud, environmental protection sewage, oily sludge, chip fluid, sand washing water, mineral water, soda white mud, and salt mud dewatering. It has a drive type of VFD, PLC, and HMI. It is made up of stainless steel ss2205 and ss316. For wear protection it has tungsten carbide tiles. The way it works is, the slurry or suspension containing solids and liquid is introduced into the rotating drum or bowl of the centrifuge. The drum of the centrifuge rotates rapidly, creating centrifugal force. This force causes the heavier solid particles to move outward and settle against the inner wall of the drum. The centrifugal force separates the slurry into two phases: a denser solid phase that accumulates near the drum’s inner wall and a lighter liquid phase that remains closer to the center. As the drum continues to rotate, the separated solid phase experiences further compression, aiding in the removal of additional liquid. The dewatered solids form a cake along the inner surface of the drum. Once the dewatering process is complete, the separated liquid is discharged from the centrifuge, and the dewatered solids (cake) are typically removed manually or through automated mechanisms. Dewatering centrifuges find applications in various industries where the separation of solids and liquids is crucial for environmental compliance, product quality, or process efficiency. They are especially common in wastewater treatment plants, mining operations, and industries dealing with high-volume liquid-solid separation processes. It decreases the waste and separates the liquids, some product was water so pure that it can be released back to nature or to be reused in the operation. GN centrifuges are one of the best equipment when comparing to the ones three times of its cost.