The VOLUTE™ technology and principle

VOLUTE™ is structured with a filter element that consists of two types of Rings: a Fixed Ring and a Moving Ring; and a screw that thrusts the filter element and transfers and pressurizes the sludge. The gaps between the Rings and the screw pitch are designed to gradually get narrower towards the direction of sludge cake outlet and the inner pressure of the filter element increases due to the volume compression effect, which thickens and dewaters the sludge.

Thickening Flocculation Unit (TFU)

After polymer flocculant is dosed and mixed with sludge in the tank, sludge forms flocs. Instantly, TFU will drain the water and pre-thicken the sludge before it travels to the dewatering cylinder of VOLUTE™. This function enables VOLUTE™ increase the throughput of the low concentrated sludge (below 1%) by up to 50% without expanding the main dewatering cylinder.

Model with 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%, and the efficiency of sludge treatment is tremendously enhanced as the inlet sludge is always conditioned beforehand. In addition, when required, the conditioning tank can be used as a reactor tank for inorganic flocculant.

Model without sludge conditioning tank

For the model without a sludge conditioning tank, an affordable price was realized by eliminating the tank. In addition, it is designed to secure the solid capture rate as high as 90% or higher. The performance is as sufficient as it needs to be.