GN Separation is delighted to announce its participation in the upcoming Ecomondo Environmental Exhibition, set to take place in Rimini, Italy, this November. Ecomondo is a highly significant event within Italy, focusing on environmental and sustainable development, and it holds a prominent position in the European environmental field.

This year, Ecomondo is scheduled to run from November 7th to 10th, spanning four days. Serving as an international platform, Ecomondo offers professionals and businesses from around the world an opportunity to connect, collaborate, and access the latest insights, thereby fostering advancements in environmental protection and sustainable development.

Event Details:

Name: Ecomondo – The Green Technology Expo

Venue: Rimini Expo Centre, Italy

GN Booth: B7, 414

GN will showcase a range of environmental solutions, including the decanter centrifuge, solid vacuum pump, and mini screw press, each with diverse applications in the realm of environmental protection.

The sludge dewatering centrifuge is adept at fundamental separation processes such as solid-phase dewatering and liquid-phase clarification. The three-phase decanter centrifuge goes a step further by enabling liquid-liquid-solid separation. Notably, for materials like plastic particles, bacterial bodies, and oily substances, the decanter centrifuge excels due to its absence of filter media (filter screen) and the prevention of screen blockage. GN’s decanter centrifuge has proven highly effective in treating industrial wastewater, municipal wastewater, and oilfield waste oily sludge, significantly reducing treatment costs and enhancing treatment efficiency.

GN’s solid vacuum pump, a fully pneumatic device, can manage a wide spectrum of waste forms, including liquids, slurries, powders, particles, and viscous substances. It finds extensive application in municipal sludge waste treatment and industrial solid waste treatment, with its attributes of safety, efficiency, energy conservation, and environmental friendliness.

GN eagerly anticipates engaging with industry professionals and customers at the Ecomondo exhibition, introducing its products and technologies, and exploring new opportunities for collaboration. GN Separation remains committed to a customer-centric approach, driven by technological innovation, and the ongoing enhancement of product quality and service standards. Participating in the Ecomondo exhibition is viewed as a strategic move to forge connections with customers, partners, and industry experts, jointly propelling the cause of environmental protection.

The normal operating parameters of the Decanter centrifuge include a maximum mud feed volume and a maximum inflow solid volume. When the actual mud feed volume exceeds the maximum value, the decanter centrifuge will lose the dynamic balance of the solid phase and the liquid phase, and the torque becomes too large . In severe cases, the Decanter centrifuge will be damaged, or the centrifuge will be overloaded and stop running. Therefore, during the operation, the amount of sludge and solids flowing into the decanter should be strictly controlled.

Select the appropriate feed flow method: first, adjust the feed flow to a smaller value (under frequency control, generally adjusted to 60%~70%), then start the Decanter centrifuge and work for a while, know that the solid phase is out The speed of the material is balanced. Then sample 500 mL at the entrance of the decanter centrifuge to determine the sedimentation ratio of the mud. It is normal if the precipitation amount is within 100~150 mL within 5 minutes. Otherwise, the bypass valve needs to be opened to reduce the feed concentration.

The water quality recovered by the sludge treatment system changes greatly, and the sludge particles will cause serious wear on the equipment. In addition, there are many uncertain factors that affect the outside world. In addition, there are many types of processing equipment in the system, and the processing links are interleaved. Therefore, to ensure the normal operation of each link and give full play to the role of facilities and equipment, it is necessary to strengthen daily operation management. Supervise the operation management personnel to do a good job in daily operations. Familiar with the function of each equipment, handle the nodes of each link, and strengthen the coordination between the processes.

As a leading manufacturer of separation equipment and conveying equipment, GN always pay high attention to the product quality and consider the long-term benefits for our users. We would also like to introduce GN as a professional manufacturer in decanter centrifuge field, GN pays a lot of attention in the selection of raw materials, high-quality centrifugal casting or forging stainless steel materials are used, and for wearing parts, hard alloy protection is used.

News from GN company this week: Recently, 1 complete set of Desander and Decanter centrifuge have been manufactured and ready to start serving a new construction mud treatment project for an overseas company.

To make sure the Desander and Decanter centrifuge will provide a reliable performance and every parts and components of all the equipment will run smoothly for a long term operation, our technical department, production department and quality control department have paid a lot of attention to the material selection, material preparation, every step of production and the inspection in each step.

If you need any support about the operation and maintenance of Desander and Decanter centrifuge , please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

As a leading manufacturer of separation equipment and conveying equipment, GN always pay high attention to the product quality and consider the long-term benefits for our users. We would also like to introduce GN as a professional manufacturer in decanter centrifuge field, GN pays a lot of attention in the selection of raw materials, high-quality centrifugal casting or forging stainless steel materials are used, and for wearing parts, hard alloy protection is used.

GN high-end CNC lathes, CNC centers, and CNC gantry milling machines can better ensure the machining accuracy of centrifuge parts. In terms of the dynamic balance of the decanter centrifuge, in addition to the ordinary low and medium speed dynamic balance, GN also applies a high speed dynamic balance process, which can dynamically balance the centrifuge screw and bowl at the actual working speed of the centrifuge. In terms of market applications, GN decanter centrifuges are widely used in the industry, and the products are exported to more than 60 countries and regions in the world, and have won high praise from customers.

GN dewatering Decanter centrifuge is T series decanter centrifuge with beach angle of 8.5 degrees. GN T series decanter centrifuge is usually used dewatering and thickening purpose. It is widely used for maximum dewatering requirements of municipal and industrial wastewater sludge. The dewatering decanter centrifuge is designed for easy separation material include large particle size, high density difference of solid and liquid, low viscosity, high concentration, high treatment capacity and higher dryness than clarity. The materials like sludge or wastewater containing fine particles usually need to be added with flocculants to gather the fine particles condensed into large ones, and then dewatered with T series decanter centrifuge.

The first use of manure for electricity generation is relatively mature technology. Use cow dung to generate electricity and make substitutes for biogas and coal. For example, in dairy farms, the annual electricity generated by the fermentation of dried cow manure processed by a cow manure Decanter centrifuge can save 1.2 million yuan in electricity costs. In addition, cow dung sticks and cow dung honeycomb coal can also be developed in a certain place. Cow dung sticks made of cow dung are used as fuel, and the combustion value is high. Cow dung honeycomb coal is compressed with cow dung and coal at a ratio of 4:6, which solves the problem of honeycomb coal.

The second use of feces

Feces can also grow Agaricus bisporus and straw mushrooms. The cow dung produced by the milk buffalo is used for biogas power generation. The produced biogas slurry can be made into liquid fertilizer, and the fertilizer is sold for more than 3,000 yuan a ton. The milk produced by milk buffalo is about 4 yuan, but the fertilizer can sell for 100 yuan. This shows that the use of cow dung can not only increase the economic income of cattle farmers, but also bring many economic and social benefits. In order to solve the problem of farming wastewater pollution and build an environment-friendly farming base, the company’s leaders attach great importance to pollution control work, and entrusted our unit to design a plan for the fecal sewage solid-liquid separation treatment project. In order to complete this work with high quality, the Decanter centrifuge is recommended to be used.

The dried cow dung dehydrated by the cow manure Decanter centrifuge can also be used as feed for many animals. The cow manure contains minerals and various nutrients, including organic matter, total nitrogen, crude protein and other nutrients.

After the manure is processed by the decanter centrifuge, according to the similar project investigation and the information provided by the owner, the sewage mainly comes from cow urine and ground washing wastewater, and contains manure and urine.

According to the requirements of the owner, it is necessary to treat about 300 tons of manure sewage produced by 4000 cows every day, and the moisture content of the dried cow manure after treatment is about 60%-70%. The excrement processed by the decanter centrifuge can greatly increase the income of the enterprise, and truly turn waste into treasure.

If the vibration is too large during the use of the Decanter centrifuge, it will cause the fatigue damage of the drum in advance, the connection bolts will be loose and broken, and even the differential will separate from the drum, causing an accident and affecting the service life. This passage will share some key information about the common causes and solutions of decanter centrifuge vibration

1. During the maintenance and assembly, the score lines of the drum are not aligned; the accuracy of the dynamic balance is destroyed. Solution: Realign the reticle.

2. The lubricating oil deteriorates. Solution: Replace as described in the instruction manual.

3. The main bearing of Decanter centrifuge fails. Solution: replace the bearing.

4. The inner ring of the main bearing loosely cooperates with the shaft. Solution: Repair or replace the end cap.

5. The screw conveyor bearing fails. Solution: replace the bearing.

6. The bolts of the liquid outlet and the slag outlet are not tightened or the pipes are rigidly connected. Solution: Tighten the bolts, and change the elastic flexible connection of the pipeline.

7. Loose flange of the machine head causes vibration of the differential. Solution: replace the head flange or small end cover.

8. The differential is damaged (generally caused by lack of oil). Solution: replace the differential parts.

9. After the stop, the valve is not tightly closed and the material is fed, which causes the accumulation of material in the drum and the partial weight. Solution: wash in water, when the accumulation of material is serious, use the counter-clockwise steering wheel to drive the auxiliary pulley of the differential after stopping to discharge the material. After the accumulation of material is discharged, it can be put into use again.

10. The joints of rotating parts are loosely deformed. Solution: Check and repair.

11. The replacement of the new parts has a poor dynamic balance. Solution: adjust or replace.

12. The related parts are worn seriously. Solution: Replace and repair.

13. The material accumulated in the casing rubs against the outer drum. Solution: clean up or flush regularly.

Being a pioneering manufacturer of separation and conveying equipment, GN consistently prioritizes product quality and the enduring benefits it offers to our customers. Additionally, GN takes pride in its position as a specialist Decanter centrifuge manufacturer. The company places significant importance on the choice of raw materials, utilizing high-quality centrifugal casting or forged stainless steel materials, and incorporates hard alloy protection for components that require wear resistance.

News from GN company this week: Recently, 8 Sets Inclined Plate Clarifier and 6 Sets Decanter centrifuge have been manufactured.

Among them: 8 sets of GNIPC-25A Inclined Plate Clarifier will be sold to South American customers for industrial sludge treatment.

6 GNLW453D-VFD high-speed VFD Decanter centrifuge will be sold to large drilling companies for drilling mud treatment.

To ensure the reliable performance and extended longevity of our Inclined Plate Clarifier and decanter centrifuge, as well as the smooth operation of all equipment components, GN has placed significant emphasis on material selection, preparation, production processes, and thorough inspections at each production stage. Our technical, production, and quality control departments have meticulously overseen these aspects to guarantee top-notch results.

Should you require any assistance with the operation and maintenance of our Decanter Centrifuge System, including the Inclined Plate Clarifier and decanter centrifuge, please don’t hesitate to reach out to GN. Our engineers possess extensive experience and knowledge within the relevant industry, and we are committed to providing the best support for your project. Our goal is to establish a stable, long-term cooperation with you, and we are prepared to offer online support and on-site guidance as needed.

As a leading manufacturer of separation and conveying equipment, GN places paramount importance on product quality and the long-term benefits of our users. We’d like to highlight GN as a professional manufacturer in the decanter centrifuge field, where we prioritize the selection of raw materials. We utilize high-quality centrifugal casting or forging stainless steel materials, with hard alloy protection for wearing parts

Our state-of-the-art CNC lathes, CNC centers, and CNC gantry milling machines ensure the precise machining of centrifuge components. In terms of dynamic balance, we go beyond the ordinary low and medium-speed dynamic balancing. GN employs a high-speed dynamic balancing process that dynamically balances the centrifuge screw and bowl at the actual working speed of the centrifuge.

GN decanter centrifuges find extensive applications across various industries and are exported to over 60 countries and regions worldwide, consistently earning high praise from our valued customers.

The bowl‘s rotating speed in a Decanter centrifuge can be continuously adjusted across a wide range. This rotational speed manipulation allows control over the separation factor of the decanter centrifuge, catering to diverse mud specifications. Generally, for sludge with larger particles and higher density, a lower separation factor is ideal, while a higher separation factor suits sludge with smaller particles and lower density.

For initial settling sludge, a modest αvalue is sufficient to achieve optimal dewatering by Decanter centrifuge. Despite the reduction in particle size for digested sludge, the increased density maintains the need for an αvalue comparable to primary sludge. The activated sludge, characterized by its low density and small particle size, necessitates a larger αvalue to achieve enhanced dewatering, with the required αvalue increasing with higher Specific Volumetric Index (SVI) values and longer sludge age. When activated sludge is in an expanded state, efficient dewatering is achieved through a high-speed decanter centrifuge. The αvalue for mixed sludge depends on the proportion of activated sludge – a higher ratio demanding a greater αvalue.

Modifying αvalue, while maintaining consistent mud quality, enhances the solid recovery rate and separation liquid clarity. However, elevating αvalue also increases energy consumption. Hence, unless a high solids recovery rate is imperative, an excessively high αvalue is unnecessary.

GN’s dewatering Decanter centrifuge model is the T series decanter with an 8.5 degree beach angle. Designed primarily for dewatering and thickening, GN’s T series decanter centrifuge is widely used in municipal and industrial wastewater sludge treatment. This centrifuge is engineered to handle materials with significant differences in solid and liquid density, low viscosity, high concentration, substantial treatment capacity, and superior dryness. When dealing with materials like sludge or wastewater containing fine particles, the addition of flocculants aids in aggregating the particles before dewatering with the T series decanter centrifuge.