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Sludge Dewatering Press
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- Sludge Dewatering Press
- VOLUTE™ Dewatering Press AW Series
For community sewage plant
VOLUTE™ Dewatering Press AW Series
Equipped with a tank for temporarily storing sludge before it is dewatered (sludge conditioning tank). Dramatically increase the efficiency of sludge treatment with a high solid capture rate of over 95%.
Advantages
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Clog-free self-cleaning mechanism -
No pre-thickening required (TS 0.2%〜) -
High solid capture rate -
Low Noise/Low Vibration -
Easy Operation & Maintenance -
Excellent expandability.
Additional cylinder unit can be added even after delivery
High Solid Capture Rate
Equipped with a tank for temporarily storing sludge before it is dewatered (sludge conditioning tank).
Dramatically increase the efficiency of sludge treatment with a high solid capture rate of over 95%.
The sludge conditioning tank can also be used as a reaction tank for inorganic coagulants as needed.
No Clogging Even with Oily Sludge
The machine has a filter element that consists of alternating layers of rings fixed at four locations (fixed rings) and vertically movable rings (moving rings) maintaining a gap between them, and a single screw that is threaded through the filter element to transfer and compact the sludge.
A clog-free self-cleaning mechanism is achieved since the screw rotates at a constant speed in contact with the floating ring, driving the floating ring to clean the filter element gap.
The machine delivers stable dewatering performance even with oily sludge.
The amount of cleaning water for preventing clogging is very small compared to other types of dewatering machines.
Easy Operation & Maintenance
24-hour fully automatic unmanned operation is possible with an automatic operation control using various sensors. There is no need for manual startups or shutdowns whilst operating the machine.
Additionally, there aren’t many daily maintenance items, and on top of that, there are no complicated operations required.
Furthermore, it does not require any special knowledge or skills, making it an easy-to-use product.
No Pre-thickening Required
This machine has an integrated structure in which two processes, thickening and dewatering, are handled by a single filter element, thus allowing the user to directly charge low-concentration sludge having a TS of about 0.2% without any pre-thickening stage.
This not only reduces the construction and operating costs for the thickening and storage systems but also reduces odor because fresh aerobic sludge is dewatered.
The machine can also efficiently capture phosphorus in waste activated sludge to the dewatered cake side, reducing the load caused by phosphorus returning to wastewater treatment.
Conventional Sludge Treatment Process
Aeration Tank Direct Dewatering
Expandable Throughput
The throughput of VOLUTE™ can be easily expanded with its Cylinder Unit. We are ready to meet your expectations, “We want to be prepared for the increase of sludge in the future, but without too much increase in the initial cost…”
Low Noise/Low Vibration
As our product does not have a high-speed spinning unit, there is no need for noise or vibration concerns, as such, no preventative measures need to be put in place for noise pollution.
Additionally, as there is no vibration from the machine itself, any kind of flooring modifications to accommodate vibrating machines will be unnecessary.
How the Clog-Free Mechanism Works
Process Flow
Sludge Conditioning Tank
A sludge conditioning tank temporarily stores sludge before it is dewatered. The model with a sludge conditioning tank realizes a high solid capture rate higher than 95%. When required, the conditioning tank can be used as a reactor tank for coagulant.
Flow Control Tank
Sludge feed is regulated with the overflow pipe, returning excess volume to the sludge storage tank.
Flocculation Tank
Polymer and sludge are stirred and mixed, forming flocs suitable for VOLUTE™.
Cylinder Unit
Sludge is instantly thickened in the thickening zone of the cylinder, and then the inner pressure increased at the dewatering zone helps sludge being dewatered well.
Discharge Outlet for Dewatered Cake
Further pressure is applied from the outlet side with the end plate, discharging dewatered cake with 15% dry solids content or better.
Feel free to contact us. After collecting information about your treatment process, sludge volume, operating hours, and other conditions, we will select the most suitable model for your sludge and your concerns. During sample test, we will simulate the amount of chemicals to be dosed, the estimated water content of the dewatered cake, etc. Upon request, a pilot test can be performed at your wastewater treatment plant (for a fee). After determining the specifications and ancillary equipment, we will start producing the equipment. Our sales representative or service engineer will perform operational adjustments at your wastewater treatment plant and you will check how to operate the system before we hand over the equipment.
You may wonder, “Can the machine dewatering the sludge as desired?” or “ Is it difficult to operate the machine?”
In addition to eliminating concerns before purchase, you can also use our products as a replacement machine during the service period of an existing dewatering machine or during the construction period of a wastewater treatment facility.
