For sewage treatment plants using the standard activated sludge process
New technology authorized by Japan Sewage Works Agency

Water and sludge treatment products

Multi-disc screw press dewatering machine-II-M Type VOLUTE™ Dewatering Press MW Series

(offered only in Japan)
Treat mixed raw sludge using the standard activated sludge process. This model has a maximum throughput of 400 kg-DS/h and achieved stable operation with an automatic control function that responds to concentration fluctuation of the supplied sludge.

製品紹介画像

ADVANTAGES

  • Reduced lifecycle costs
    Reduced lifecycle costs
  • Realize stable operation with control responding to concentration  fluctuations
    Realize stable operation with control responding to concentration  fluctuations
  • Overhaul & replacement of consumable parts performed on site
    Overhaul & replacement of consumable parts performed on site
  • Water-saving & Power-saving
    Water-saving & Power-saving
  • Low noise and low vibration
    Low noise and low vibration
  • Easy operation and easy maintenance
    Easy operation and easy maintenance
  • Excellent expandability<br>Additional cylinder unit can be added even after delivery
    Excellent expandability
    Additional cylinder unit can be added even after delivery

Realize stable operation with control responding to concentration fluctuation

In the treatment of mixed raw sludge, sludge properties such as sludge concentration and fibrous materials and those of seasonal sludge properties fluctuate greatly, which sometimes makes it difficult to adjust the operation of the sludge dewatering press, such as the amount of sludge fed and the amount of chemicals dosed.
In the MW series, a level sensor detects water level fluctuations in the flocculation tank, and even when the concentration of the sludge fed into the sludge dewatering press fluctuates (TS of 2.5 to 3.8%), the system automatically adjusts the amount of sludge fed into the filter to maintain that an amount of solids fed into the filter element is constant. This allows the operation with constant water content and filtration speed without changing the operation settings each time the concentration changes.

Life cycle costs can be reduced

Life cycle costs can be reduced at any sewage treatment plant, regardless of the scale of sewage treatment.

Overhaul and replacement of consumable parts performed on-site in a short time

To maintain the dewatering performance and extend the service life of the sludge dewatering press, the consumable parts that make up the filtration zone need to be replaced periodically according to operating hours. Since the filtration zone has an independent structure, they can be easily replaced on-site without taking the machine back to our factory for replacement of consumable parts.
Parts replacement can be done in a short time; thus you can reduce the time required to shut down the sludge dewatering press.

PROCESS FLOW

  1. 01

    Thickening Flocculation Tank

    Polymer and sluge are stirred and mixed, forming flocs suitable for VOLUTE™. Then, the built-in thickener in the tank instantly thicken the sludge.
  2. 02

    Reactor Tank for Coagulant

    Coagulant is added to the concentrated sludge, and mixe in this tank.
  3. 03

    Cylinder Unit

    Sludge is further thickened in the thickening zone of the cylinder, and then the inner pressure increased at the dewatering zone helps sludge being dewatered well.
  4. 04

    Discharge Outlet for Dewatering Cake

    Further pressure is applied from the outlet side with the End Plate, discharging dewatered cake with around 30% dry solids content.

RENTAL

Rent a Sludge Dewatering Presses

You may wonder, “Can the machine dewater 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.

Flow for Product Installation

流れ
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 jar test, we will simulate the amount of chemicals to be dosed, the estimated water content of the dewatered cake, etc. 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.
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