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Sludge Dewatering Press
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- VOLUTE™ Dewatering Press ES-051
Ideal for ultra small-scale wastewater treatment plants
World's smallest sludge dewatering press
VOLUTE™ Dewatering Press ES-051
Suitable for sludge treatment in septic tanks as well as very small-scale sludge treatment in industrial laundry, vehicle-maintenance factories, and others.

Advantages
-
Clog-free Self-Cleaning Design even with oily sludge -
No pre-thickening required (TS 0.2%〜) -
Applicable for Various Sludge Types Throughout Many Industries -
Power and water saving -
Low Noise/Low Vibration -
Easy Operation & Maintenance -
Small footprint
Ultra-small Footprint
Ultra-compact body: 1095 mm long, 705 mm wide, 760 mm high.
This Press is used in various small-scale wastewater treatment facilities and scenes such as septic tank sludge treatment, waste treatment plants, industrial laundry, vehicle-maintenance factories, auto parts factories, cosmetics manufacturing factories, and domestic wastewater treatment in buildings.

Clog-free Self-Cleaning Design 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 moving ring, driving the moving ring to clean the filter element gap.
The design 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

Power and Water Saving
Power-saving Operation
The screw that rotates inside the filtration unit of VOLUTE™ operates at an extremely low speed of approximately 2 to 4 rpm, resulting in very low power consumption and economical operation.
Water-saving Design
VOLUTE™ employs a unique self-cleaning mechanism to prevent clogging in the filter element, thereby eliminating the use of large amounts of cleaning water for clogging prevention.
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.
Applicable for Various Sludge Types Throughout Many Industries
ES-051 is used across a wide range of industries and facilities, including food and beverage manufacturing, chemical manufacturing, industrial waste treatment, recycling, machinery manufacturing and metalworking, commercial laundry, crude oil extraction, commercial facilities and wastewater treatment plants.
How the Clog-Free Mechanism Works
Process Flow

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 20% (+/-5%) dry solids content.
*The same process as the FS series.
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.





