Product Details

Decanter centrifuge for faecal sludge dewatering and pelletising

Specification:

1.Big capacity and high centrifugal force

2.feeing ,running ,discharging and stopping autumatically

3.304 stainless steel

Product Description

Introduction of faecal sludge dewatering :

A decanter centrifuge separates solids from one or two liquid phases in one single continuous process.
This is done using centrifugal forces that can be well beyond 3000 times greater than gravity.It consists of a solid cylindirical bowl rotating at high speed, a scroll rotating at the same axis with a slightly different speed, a drive group adjusting the speed difference and the body which carries all the rotating elements.

A decanter centrifuge is a device, which employs a high rotational speed to separate components of different densities. This becomes relevant in the majority of industrial jobs where solids, liquids and gases are merged into a single mixture and the separation of these different phases is necessary.

A decanter centrifuge separates solid materials from liquids in slurry and therefore plays an important role in wastewater treatment, chemical, oil and food processing industries.

There are several factors that affect the performance of a decanter centrifuge and some design heuristics to be followed which are dependent upon given applications.

Principle of faecal sludge dewatering:

Liquid and suspended solids are fed along the centre line to a distribution room within the bowl and then

accelerated into the bowl by centrifugal force through the feeding point. This centrifugal force then causes
the suspended solids to settle and accumulate at the bowl wall.
Sludge cake is discharged by scroll from the conical part meanwhile clarified liquid flows back along the
bowl and is discharged through the cylindirical end of the bowl by plates which can adjust the
level of clarified liquid.

The operating principle of a decanter centrifuge is based on gravitational separation. Naturally, a component with a higher density would fall to the bottom of a mixture, while the less dense component would be suspended above it. A decanter centrifuge increases the rate of settling through the use of continuous rotation, producing a gravitational force between 1000 to 4000 times that of normal gravitational force. This reduces the settling time of the components by a large magnitude, whereby mixtures previously having to take hours to settle can be settled in a matter of seconds using a decanter centrifuge. This form of separation enables more rapid and controllable results

Main application of faecal sludge dewatering:

The main application of decanter centrifuges is to separate large amounts of solids from liquids on a continuous basis. They are also used to wash and dry various solids in industry, such as polystyrene beads, clarify liquids and concentrate solids. Table 1.0 displays various examples of the utilisation of decanter centrifuges in various industries.

Advantage of faecal sludge dewatering:

Generally the decanter centrifuge has more advantages than disadvantages; however there are some
limitations when compared to other processes.
Advantages:
1.Decanter centrifuges have a clean appearance and have little to no odour problems.
2.Not only is the device easy to install and fast at starting up and shutting down, but also only requires a
small area for operation compared to other competitive processes.
3.The decanter centrifuge is versatile as different lengths of the cylindrical bowl section and the cone angle
can be selected for different applications. Also the system can be pre-programmed with various design
curves to predict the sludge type, while some competitive processes, such as a belt filter press, cannot
change the belt type to operate for different sludge types.Its versatility allows the machine to have various
functions such as operating for thickening or dewatering.
The machine can operate with a higher throughput capacity than smaller machines.This also reduces
the number of units required.
4.The device is simple to optimise and operate as it has few major variables and reliable feedback
information.
5.The decanter centrifuge has reduced labour costs compared to other processes, as it requires low
continuous maintenance and operator attention.
6.Compared to some competitive process such as the belt filter process, the decanter centrifuge has
more process flexibility and higher levels of performance.

Limitation of faecal sludge dewatering:

1.The decanter centrifuge cannot separate biological solids with very small density differences, such as
cells and viruses.A competitive process that is capable of separating these difficult-to-separate solids is
the tubular-bowl centrifuge.
2.The machine can be very noisy and can cause vibration.
3.The device has a high-energy consumption due to high G-forces.
4.The decanter centrifuge has high equipment capital costs. Hard surfacing and abrasion protection
materials are required for the scroll to reduce wear and therefore reduce the maintenance of the scroll wear.

Assembly Parts

Technology Parameter

Finished Products

Manufacturing shop

After-Sales Service

Best service for you :

1.12months guarantee period from machine arriving date.

2.Abundant spare parts in stock are available to provide.
3.Our technicians could be dispatched for overseas service.
4.7*24hours technical consultation.
5.Your workers could get trained both in our factory and yours.
6.Routine tracing till the machine work properly will be done timely.
7.We will remind you to do the normal maintenance.
8.Your suggestions or any comments & reflection would be treated in priority .
9.Marketing team will visit you during our visit to your country if you require.
10.How can we visit your factory?
If you come from abroad ,air to Shenyang airport ,we will pick you up in the airport.
If you come from domestic city,train directly to Liaoyang,we will pick you up in the railway station.
11.How do you protect the quality?
My factory have more than 10years experience,strict operation policy is performed,adcanced processing machines guarantee the precision of all components,workers with operation license,parts get multiprocessing,transmission & electrical parts are of international famous brand,Series of test and inspection are done in the wholeproducing stage.
12.Will you dispatch technicians for installation and commissioning?
Yes,we can,we do lots of service,please refer to our after sales part.
13.What is your advantage comparted with your competitors?
Quality and experience,we are the top centrifuge supplier in China,our design and structures are similar to world leader alfa laval,westfaliar,flottweg etc.

Packaging & Shipping

Packing :
1.Machines are wrapped in plastic bags first before being convolved with straw rope.
2.Then the machine is putted in strong iron sheet case/wooden case, lined with metal wire if necessary.
--Payment Term
T/T, Western Union, L/C, Escrow, D/P, D/A, Paypal or can be negotiated.
--Delivery Time
We will send you the machine within 3-10 working days after receive your down payment
--Guarantee
Two years. Malfunctions which are caused by machine-self and quality will be responsible for our manufacturer.We can provide youthe spare parts with production cost all the year round.

Contact Details for our centrifuge Separator

If you are interested in our products, please kindly send me email or call me directly, I will reply you asap. Thanks!

If you are interested in our product ,please kindly contact with me freely ,I will reply you asap ,thanks.