Sludge dewatering line on frame

In terms of compatibility and space saving, VANEX has created a type of dewatering line where all components are placed on a stainless steel frame construction, creating a comprehensive unit. The major advantage of frame construction lines is the easy manipulation of the line, including starting, disconnecting, or moving it.

All requirements for dewatering, with a focus on maximally efficient separation of the liquid component – water (with the possibility of recycling) and the solid component – sludge (and its pressing), are fully preserved.

In addition to stationary use, VANEX uses the line to provide dewatering services for small wastewater treatment plants where having a stationary line would be uneconomical.



Technical requirements:

  • Input dry matter content 1-4%
  • Horizontal surface for placing the line on a frame construction (specified according to the type of components used and customer needs),
  • Voltage system: 3 + PEN  ~ 50Hz, 400/230V, TN – S,
  • Utility water (with a pressure of 5-6 bar), or the option to use filtrate,
  • Drinking water (flow rate 2-3 m3/hour, pressure approximately 0.3 MPa),
  • Suitable type of flocculant (powder, emulsion).

Variability of the belt press line on a frame construction

Given that some wastewater treatment plants need to dewater only temporarily or have limited space in the hall, a suitable solution is the belt press line on a stainless steel frame construction. Belt press lines on a frame construction are tailored to customer specifications for maximum functionality and efficiency. Inlet and outlet points for individual media are designed with a focus on quickly putting the equipment into operation or shutting down/moving it.

Mobile lines can take various modifications in the configuration of dewatering lines based on the components used. The fundamental component is the belt press, to which additional components are added according to the customer’s needs. An example of a standard mobile dewatering line:

Belt press with chemical preparation unit and conveyor

Principle of operation: In the chemical system, a flocculant solution is produced. It is introduced (via a dosing pump) into a dynamic mixer on the belt press, where it is mixed with sludge (introduced by a sludge pump). The mixture (sludge and flocculant) is separated into a liquid and solid component after the pressing process. The solid component falls onto a belt conveyor, which transports it to the designated location.


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