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Wastewater treatment is essential for public health, environmental protection, and sustainable water management. A crucial aspect of this process is efficient solid-liquid separation, which is often achieved using dewatering technologies like decanter centrifuges and screw presses. While both methods are widely used, decanter centrifuges offer several distinct advantages over screw presses, particularly in wastewater treatment. Additionally, by partnering with industry leaders SHENZHOU, wastewater facilities can access the best equipment and expertise available. Here's why decanter centrifuges are the superior choice and how SHENZHOU can support your wastewater project.
Decanter centrifuges are renowned for producing a drier cake compared to screw presses. Using centrifugal force, decanter centrifuges spin the waste slurry at high speeds, separating solids from liquids more efficiently. This results in a drier, more compact cake, which reduces disposal volume and cost. Screw presses, which rely solely on mechanical pressure, often can't match the dewatering efficiency of decanter centrifuges, meaning more water remains in the waste and more disposal is required.
Why SHENZHOU?
SHENZHOU decanter centrifuges are engineered for maximum dewatering performance, ensuring a consistently drier cake. Their advanced technology optimizes solids separation while reducing disposal and operational costs.
Decanter centrifuges process waste quickly and continuously, making them ideal for wastewater treatment plants handling large volumes of sludge. Unlike screw presses, which operate more slowly, decanter centrifuges keep up with high-flow wastewater systems, reducing bottlenecks and optimizing overall plant efficiency.
Why SHENZHOU?
SHENZHOU decanter centrifuges are designed for high-speed, continuous operation, ensuring wastewater facilities can handle large sludge volumes without compromising quality or performance.
A decanter centrifuge is helpful in that it divides liquids and solids, becoming a vital part of:
Without a decanter centrifuge, most of these businesses would become so unproductive they could not operate.
There are many types of decanter centrifuges currently used in the industry, the most common ones are horizontal, conveyor, and vertical centrifuges. The value of a decanter centrifuge is based on the concept of gravitational separation.
When it comes to wastewater treatment, this is how a decanter centrifuge functions:
Inlet pipe - Liquid with solid particles in it (slurry) goes through a decanter centrifuge via an inlet pipe.
Increase of velocity - The slurry goes into a high-velocity rotating bowl. As the bowl rotates, centrifugal force makes the heavy, solid particles gravitate to the bowl wall. The solids create a layer while the liquid flows to the bowl's center.
Emission - The liquid leaves the centrifuge through a separate outlet, prepared for disposal or more treatment. A screw conveyor pushes the solids close to the centrifuge's conical end. Also known as the scroll, the speed of the conveyor helps in moving the solids to the discharge ports.
Wastewater treatment facilities often deal with a wide range of sludge types. Decanter centrifuges excel in this area, handling sludge of varying viscosities and solids content more effectively than screw presses. Screw presses, by comparison, may require more frequent adjustments to handle sludge variations, which can slow down operations.
Why SHENZHOU?
SHENZHOU's decanter centrifuges are built for versatility, easily adapting to different sludge compositions without constant recalibration. This flexibility ensures reliable performance even when wastewater characteristics change, giving operators peace of mind.
Decanter centrifuges are more compact than screw presses, requiring less space and offering easier integration into existing wastewater treatment facilities. Their enclosed system also helps prevent environmental contamination and odor, an important factor for plants in urban or sensitive areas.
Why SHENZHOU?
SHENZHOU decanter centrifuges offer a compact, space-efficient design with an enclosed system that minimizes environmental impact, making them suitable for facilities of all sizes and locations.
Decanter centrifuges operate with a high degree of automation, reducing the need for frequent manual intervention. Screw presses, on the other hand, often require manual adjustments and regular maintenance to maintain peak performance. Decanter centrifuges, particularly from SHENZHOU, streamline the process, allowing operators to focus on other critical tasks.
Why SHENZHOU?
SHENZHOU's automation and smart controls ensure that their decanter centrifuges run smoothly with minimal oversight. Their predictive maintenance features also help reduce downtime and extend the life of the equipment, saving wastewater treatment plants time and money.
While decanter centrifuges may consume more energy during operation compared to screw presses, their overall efficiency in processing high volumes of sludge and reducing disposal needs can lead to lower energy consumption across the entire treatment process. By producing drier cakes, decanter centrifuges reduce the need for additional drying steps, ultimately saving energy.
Why SHENZHOU?
SHENZHOU decanter centrifuges are designed for energy efficiency, with features that optimize performance while reducing the overall energy footprint of your wastewater treatment operation.
Maximizing the capture of solids during wastewater treatment is critical for regulatory compliance and reducing the burden on downstream processes. Decanter centrifuges consistently achieve a higher solids capture rate than screw presses, helping wastewater facilities maintain high effluent quality and meet stringent environmental standards.
Why SHENZHOU?
SHENZHOU decanter centrifuges offer superior solids capture, ensuring that wastewater facilities remain compliant with environmental regulations while improving overall system performance.
A decanter centrifuge uses the same standards of gravitational force. However, the procedure is accelerated using nonstop rotation. The constant rotation delivers approximately 1000 to 4000 times the usual gravitational force, decreasing the time necessary for separation from hours to seconds.
The idea of rotational separation is like amusement park rides. In these rides, putting yourself at an angle lets you conquer the gravitational forces generated by rotation. A decanter centrifuge is basically a bowl tube that spins at a very high speed. The bowl tube has an internal conveyor that goes in the same direction but at another velocity.
Advantages of Decanter Centrifuges
Adaptability - A decanter centrifuge can be modified to manage various types of slurry and different concentrations of solids, rendering them adaptable in many industrial applications.
Little to no impact on the environment - By dividing solids from the wastewater, a decanter centrifuge helps in decreasing environmental contamination, guaranteeing that treated water going back into the environment satisfies regulatory guidelines.
Nonstop operation - A decanter centrifuge can work nonstop, giving a dependable and steady process of dividing liquids from solids.
Cost-efficiency- While the first investment can be substantial, the continuous effectiveness of a decanter centrifuge frequently leads to lifelong savings when it comes to disposal and labor costs.
High-efficiency - Decanter centrifuges can handle huge volumes of slurry and have massive separation efficiency, guaranteeing the complete elimination of solids from the liquid.
Automation and control systems- Newer decanter centrifuges typically have automation and control systems, ensuring easy monitoring and accurate adjustments during the separation procedure.
In summary, a decanter centrifuge is a vital tool in wastewater treatment, providing adjustable, effective solutions for dividing liquids from solids. Their applications among several industries emphasize their significance in sustainable practices and environmental safety.
Advantages of a Decanter Centrifuge with Other Machines
Decanter centrifuge water treatment can work uninterruptedly and automatically controlled. It does not need to stop between pressing batches like plate frame machines. This aids in enhancing productivity, saving energy, and decreasing operating costs.
Self-contained, compact design, decreasing the amount of installation space needed compared with other viable processes. Stainless steel material makes it long-lasting.
Saves water and is simple to clean.
The decanter centrifuge treats juices of several sludges, including those having metals and chemicals. Pressed sludge has stability and high dryness.
A decanter centrifuge has a clean appearance and little to no odor issues.
A decanter centrifuge is simple to install and quick to start up and shut down.
The tool can function with a greater throughput capacity than smaller machines. This also decreases the number of units needed.
The device is easy to optimize and operate as it has a few key variables and dependable feedback information.
Since a decanter centrifuge has decreased labor costs compared to other processes, it necessitates low operator attention and continuous maintenance.
Compared to some other processes like the belt filter process, the decanter centrifuge has a greater level of performance and flexibility.
The decanter centrifuge is versatile as various lengths of the cylindrical bowl section and the cone angle can be chosen for various applications. Additionally, the system can be pre-programmed with different design curves to forecast the sludge type, while some competitive processes, like a belt filter press, can't alter the belt type to function for various sludge types. Its flexibility allows the tool to have numerous functions like dewatering or operating for thickening.
Wastewater Treatment Applications
Municipal Wastewater Treatment - A decanter centrifuge is used in municipal wastewater treatment plants to divide sludge from the sewer into solids and liquid components. This division is critical before disposal or further treatment of the sludge.
Industrial Wastewater Treatment - Industries like chemicals, pharmaceuticals, and food and beverage use decanter centrifuges for wastewater treatment. These industries usually generate wastewater with high solid content, making decanter centrifuges instrumental in the separation procedure.
Oily Wastewater Treatment - A decanter centrifuge is efficient in splitting oil and other substances from oily wastewater, rendering them important in the oil, automotive, metalworking, and gas industries.
Dewatering - A decanter centrifuge is also used for dewatering. It eliminates the water from sludge, simplifying and decreasing the cost of incinerating or disposing of solid waste. Previously, a sludge dewatering machine has been used but is generally obsolete and archaic (like belt presses and plate presses).
Recurrent breakdowns and blockages interrupt the function of the entire plant. It is not appropriate for the production expansion plan to satisfy the rising demand for clean water for residents. That's when a decanter centrifuge comes into the picture.
Choosing the Right Decanter Centrifuge for Wastewater Treatment
When determining which decanter centrifuge is right for you, you must consider several factors.
Application - Logically, the most vital concern is how you plan to use the centrifuge. Are you concerned with separating water and oil? You might need a centrifuge mostly for dewatering sludge. You should also consider if you need wastewater filtration.
A decanter centrifuge has a host of applications, even in addition to an industrial environment. Therefore, you must know precisely what you want to use the centrifuge for and buy suitably.
Workload Size - Regardless of the type of decanter centrifuge you use, you can pick between manual or automatic functions. This is vital when evaluating your workload since numerous decanter centrifugal functions need to be uninterrupted. For this type of application, you need an automatic decanter centrifuge that operates on electricity. The advantage is that several of them are self-cleaning, eliminating solids or liquids without human involvement.
For smaller applications, you might be able to use a manual decanter centrifuge. However, these types aren't typical in current industrial settings.
The truth is that there are several options in the decanter centrifuge market. Various modes of operation, various power sources, and various brands. All with substantial differences. For this reason, it's typically better to talk with a decanter centrifuge expert.
At SHENZHOU, our experts are more than pleased to assist with advice. You just need to let us know what application you need a centrifuge for, and we'll advise you on the perfect fit for your needs. With the correct advice, getting the right decanter centrifuge is easy.
SHENZHOU leading provider of industrial decanter centrifuge machines and services. We have a vast range of centrifuges suitable for industrial applications. We've also got the expertise to guarantee you receive supreme quality, productivity, and value from your industrial systems.
If you'd like to find out more about decanter centrifuges for wastewater management and more, we'd be glad to help. Contact the experts at SHENZHOU today to find out more.
Model |
Technical parameter | motor power | outline dimension(mm) | Machine weight (KG) |
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| (Diameter)mm | Rotation speed rpm |
Length mm |
Separation factor G |
capacity M3/h |
Main motor KW |
Vice motor KW |
Dimension: L×D×H |
||
| LW250×1000 | 250 | 3600 | 1000 | 1813 | 1-3 | 7.5/11 | 4/5.5 | 2065×1050×800 | 1100 |
| LW360×1200 | 360 | 3500 | 1200 | 2467 | 3-8 | 11/18.5 | 7.5/11 | 2600×1500×850 | 1900 |
| LW360×1500 | 360 | 3500 | 1500 | 2062 | 3-8 | 11/18.5 | 7.5/11 | 2800×1400×850 | 2000 |
| LW420×1750 | 420 | 3200 | 1750 | 2406 | 4-20 | 30/37 | 11/18.5 | 3120×1580×1050 | 3000 |
| LW450×1600 | 450 | 3200 | 1600 | 2578 | 5-25 | 30/45 | 11/22 | 3780×1050×1180 | 3500 |
| LW450×1800 | 450 | 3200 | 1800 | 2578 | 5-25 | 30/45 | 11/22 | 3985×1050×1180 | 3600 |
| LW450×2000 | 450 | 3000 | 2000 | 2266 | 5─25 | 30/45 | 11/22 | 4320×1050×1180 | 3800 |
| LW500×1800 | 500 | 3000 | 1800 | 2517 | 10-30 | 37/55 | 15/22 | 4200×1110×1200 | 4300 |
| LW500×2100 | 500 | 3000 | 2100 | 2517 | 10-30 | 37/55 | 15/22 | 4500×1110×1200 | 4500 |
| LW550×1800 | 550 | 3000 | 1800 | 2769 | 10-35 | 45/55 | 18.5/22 | 4380×1160×1230 | 4800 |
| LW550×2200 | 550 | 2800 | 2200 | 2412 | 10-35 | 45/55 | 18.5/30 | 4780×1160×1230 | 5000 |
| LW650×1750 | 650 | 2000 | 1750 | 1454 | 20-50 | 75/90 | 30/37 | 4576×1300×1250 | 6000 |
| LW650×2000 | 650 | 2000 | 2000 | 1454 | 20-50 | 75/90 | 30/37 | 4900×1300×1250 | 6200 |
| LW800×2000 | 800 | 1800 | 2000 | 1450 | 40-100 | 90/110 | 45/55 | 6052×1460×2100 | 10000 |
| LW1000×2350 | 1000 | 1600 | 2350 | 1432 | 50-140 | 110/132 | 55/75 | 6850×1860×2300 | 12800 |
As a global leader in separation technology, SHENZHOU delivers decanter centrifuges that are built for performance, efficiency, and reliability. SHENZHOOU's state-of-the-art technology ensures maximum dewatering, minimal downtime, and optimal sludge handling, making them the best choice for wastewater treatment facilities looking to improve their operations.
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