Efficient Decanter Sludge Thickening and Dewatering for The Environment Industry

EFFICIENT SLUDGE THICKENING AND DEWATERING FOR THE ENVIRONMENT INDUSTRY DECANTER CENTRIFUGE
Centrifugation, an efficient solution to solve your dewatering and thickening tasks Centrifugation is a mechanical separation process in which two or more materials are separated using centrifugal forces. The demands of a centrifuge depend strongly on the specific application (e.g. flow rates and solids load), the material characteristics (e.g. particle size and abrasion behavior), and the operating environment (e.g. explosion-proof design).

Each machine in the SHENZHOU decanter centrifuge family benefits from an application-specific design. Whether your goal is to separate solids from liquids, two liquids from each other, or even to accomplish both tasks at the same time, our application specialists have an optimal design for you. Thanks to decades of experience with continuously evolving machine designs, our top-of-the-class decanter centrifuges ensure reliable and efficient performance.
FILTRATION VERSUS SEDIMENTATION Compared to filtration equipment, centrifugal sedimentation equipment can often achieve the same capacity at a lower investment cost. The sedimentation process can also reach higher flow rates in a continuous mode. Wide variations in feeding parameters can also be accepted. In sedimentation processes, consumables, such as filter media in filtration processes, are not used. Better capture rates can be achieved by centrifugal sedimentation as washing cycles in the filtration process could reduce the final product capture rate. Sedimentation processes are better able to handle complex products, especially compressible ones, which are difficult to separate in filtration processes. Washing of sedimentation equipment is easier than with filtration equipment because the filtration equipment's wash water is under pressure, thus larger quantities are used.
Get more results with less energy We put all our energy into delivering the best separation equipment so that you never have to waste energy in your decanter centrifuge
Energy efficiency The SHENZHOU decanter centrifuge has always been at the cutting edge of energy efficiency. We have shaped and improved today's industry standards through a number of technological innovations.

DEWATERING The SHENZHOU decanter centrifuge  is the most versatile of all existing solid/liquid separation technologies, and can be tailored to meet your target dry solids content. The decanter makes it possible to produce both thickened sludge and extremely dry cake from highly diluted sludge. Some Thermal Hydrolysis Process (THP) plant projects, for example, use it to achieve pre-dewatering (upstream thermal lysis step) and thickening during the same process stage. Others use this dual functionality to run the SHENZHOU decanter centrifuge in thickening mode during the period in which liquid sludge can be spread on the fields, and in dewatering mode when it is forbidden to spread liquid sludge on the fields. Pig manure separation also falls into this category. The  SHENZHOU decanter centrifuge is capable of producing clarified liquid with a capture rate of more than 80% TSS, while at the same time producing dewatered solids with a very specific granularity necessary for efficient composting.

THICKENING As with all sludge dewatering and thickening technologies, performance of the SHENZHOU decanter centrifuge is affected by the conditioning process, such as polymer type and dosage. But unlike other sludge separation technologies, the SHENZHOU  decanter centrifuge  can still achieve a high solid/liquid separation rate in many applications without slurry pre-conditioning.

CLARIFICATION The SHENZHOU decanter centrifuge combines two significant advantages: high g-force capability and a specific HHP rotor design. The HHP rotor design helps to manage internal solids transportation, making it possible to utilize g-force capabilities to their fullest. All applications benefit from this approach, particularly food production processes such as juice clarification, which demand a high degree of separation at all times.
CLASSIFICATION The SHENZHOU decanter centrifuge can also be used in classification processes in all industries - from mining & minerals to food, chemical, and environmental applications. One such application is the classification.
of sand contained in sludge before being processed in a wet oxidation unit.

3-PHASE SEPARATION
The SHENZHOUdecanter centrifuge can also be used for 3-phase separation, in which the centrifugal force is used to separate liquids and solids with different densities, or to separate light liquid phase and heavy liquid phase from solids. Many SHENZHOU decanter centrifuges  in three phases design are used in applications ranging from slop oil and animal fat separation to olive oil and palm oil. Our machines are designed to support high-temperature processes, up to almost 100°C, to achieve the highest separation rate efficiency.

SCROLL The scroll of the SHENZHOU decanter centrifuge  is the most flexible scroll available on the market. Its specific open flight design reduces the torque created by the sludge and maximizes the clarification rate. The special cone design leads to high sludge compaction. • Reduction of sludge conveying torque by 30%, which impacts the gear box lifetime and the scroll drive size positively. • High cake dryness due to better sludge compaction. • Excellent centrate quality due to minimized internal turbulences and maximized settling volume.

BOWL The bowl design is carefully selected to balance the various needs for integrity, stability, smooth operation, minimized windage, high durability, low wear, and easy maintenance, while ensuring the principle process functions. The design is modular to allow an easy fit to different basic process conditions by adjustment of diameter, length, and cone angle. The overall design is optimized to minimize the power consumption and provide the best possible stiffness.SHENZHOU decanter centrifuges are not only factory-tested before delivery to a customer's site, but also extensively type-tested according to international standards to meet all product safety requirements

COVER Covers protect you against spillage and touching rotating parts, meet the noise radiation and thus are vital safety features. The shape is optimized for easy cleaning and handling. Different options are available to fit in with your needs, be it highest corrosion resistance, lowest noise radiation, or similar

WEAR PROTECTION The different zones and elements in a decanter that may be subject to higher wear are protected by a carefully composed selection of wear protection means. Depending on the extent of wear, different material compositions, ranging from polyurethane to sintered tungsten carbide elements, are used to protect scroll flights, feed chamber, feed pipe discharge ports, and discharge housing. Your SHENZHOU specialists are glad to offer their expertise in working towards the best combination of protection choice versus cost and selecting the best fit from the wide range of options

MACHINE CONTROL AND PROTECTION  SHENZHOU decanter centrifuges will be as transparent in operation and for maintenance as you require. From the minimum machine protection to all levels of predictive maintenance information, including bearing conditioning sensors, the recommended minimum configuration depends on your operation and your application environment. It can be scaled to your needs in perfect combination with our addIQ control systems to support optimization of your operation. Our separation specialists seek to make operation and good care of your equipment, ensuring a long service life, blend seamlessly into your work schedule, and will provide fast and precise support should you need it.

High-performance materials: Best protection against wear for extended decanter life cycle The SHENZHOU  decanter centrifuge  is manufactured with advanced wear-resistant materials for a long, continuous life cycle. A variety of materials ensures that your operations are able to withstand high temperatures, heavy-duty products, and corrosive products. • To protect the bowl, the inner surface has strips or grooves, depending on machine size and application. Bowl outlets are protected with easily replaceable bushings. • To protect the screw conveyor, the inside of the feed chamber is coated with tungsten carbide spray or protected with TurboWISE polyurethane inserts. Feed chamber outlets are equipped with replaceable bushings, and the screw conveyor blade has replaceable tiles made of tungsten carbide Good wear protection is a strategic, long-term investment with a guaranteed return. • To protect the solids casing, the receiving surface is a thick stainless steel plate with polyurethane or tungsten carbide spray coating, depending on the application. • Exchangeable wear parts mean fewer repairs and less downtime, both of which lead directly to reduced maintenance costs.

Structure

1. Feeding pipe 2. Discharge screw 3. Drum 4. Casing 5. Differential mechanism

Working principle

The drum and the spiral feeder rotate in the same direction but with a certain speed difference; the material is led into the feeding spiral inner cylinder via the feeding pipe and, after speeding pipe and, after speeding up, enters the drum;

under the action of the centrifugal force field, the relatively heavier solid-phase material deposits on the drum wall forming the residue layer; the solid-phase residue is continuously pushed by the spiral feeder to the conic end of the drum and, after dehydration in the drying area, is discharged out of the machine.

The machine is capable of continuous feeding, separating, dehydrating and discharging under full-speed running.

Structural  Diagram

Technical Paramter:

More parts show of the decanter centrifuge:

FAQ
Q1: Where can I get product & price information?
A1: Send us inquiry or email directly, then we will contact you.
Q2: How can I make sure your machinery is suitable for me? 
A2: Please tell all the separation information you know, such as your raw liquid,
two-phase or three-phase separation, solid content in liquid, solid size, the purpose, etc. After analyzing your information, we will to choose a suitable model for you, and send the details and videos to you.
Q3: What should I do if I want to see the separation effect?
A3: If you can come to our factory with the raw liquid, we will provide test service. Or you deliver the raw liquid to us, and we will do a test, and supply you the testing videos.
Q4: How to enjoy the OEM services?
A4: As the manufacturer of the machine, we will try our best to satisfy you if you have any specific requirement, such as the cover device, drum size, motor voltage, etc.