Sewage Sludge Transport with the Tube Chain Conveyor

Mechanical Conveying

Sewage Sludge Transport with the Tube Chain Conveyor

A suitable Solution for the Intraplant Transport
The ever increasing amount of sewage sludge from waste management companies poses a major challenge for all aspects of mechanical materials handling. The hermetically sealed tube chain conveyor system provides for the safe, gas-tight, and odorless transport of sewage sludge.
(ed. WoMaMarcel - 18/9/2015)
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Tube chain conveyors are used for powders or sludges as well as for hard and even abrasive materials such as glass bottle scrap.

A suitable solution for the intraplant transport of sewage sludge with a high content of dry matter is the Schrage tube chain conveyor.
Depending on the tube diameter (115 to 270 mm), the conveyor system is suitable for bulk material quantities of up to 80 m³/h and layouts of up to 60 m horizontally and/or 40 m vertically. It allows for the transportation of highly abrasive, toxic, explosive, adhesive, or even chemically aggressive products and is thus an ideal means of conveyance for challenging bulk materials such as sewage sludge.

Flexible Continuous Conveyor System

The tube chain conveyor is a mechanical conveyor and belongs to the group of continuous conveyors. The basic components include a tensioning and a drive unit, the tubes for the conveying and the return side and an endless conveyor chain that is equipped with evenly spaced conveyor discs. The bulk material to be transported is fed through the inlet onto the conveying path and is then hauled by the conveyor discs that are attached to the driven chain. Depending on individual needs, the bulk material can be discharged at the end of the conveying path or at intermediate discharge points.

The huge advantage of the tube chain conveyor compared to belt conveyors, screw conveyors, troughed chain conveyors, or bucket elevators is its space-saving flexible layout. The possibility of horizontal, vertical, and even diagonal layouts allows for perfect integration into the environment and the ability to handle any kind of conveying path, regardless of its direction.

A single tube chain conveyor can often replace several systems, e.g. a combination of a bucket elevator and screw conveyor.
This way, the sewage sludge can be transported straight from the drying system to the silo using only one means of transport. The tube chain conveyor can also be used to discharge from the silo and to load the material onto a truck. This not only reduces maintenance costs but is also reflected in the costs for spare inventory. There is very little wear on the conveyor due to the extremely low chain speeds. Depending on the design, the tube chain conveyor uses between 0.37 and 11 kW. That is 20 times less energy than a pneumatic conveyor or 3-4 times less than a screw conveyor.

Good for the Environment

Sewage sludge may contain a number of hazardous substances, which might be hazardous for the environment as well as harmful for people. The hermetically sealed system of the tube chain conveyor provides for the safe, gas-tight, and odorless transport of sewage sludge. And the manual handling of the dry sludge, which may require special safety measures, can be eliminated with the use of tube chain conveyors, thereby providing for operational safety.

Systems that need to be installed in areas exposed to explosion hazards are designed in compliance with Atex. The utilisation of special plastic discs prevent the build-up of ignition sources.

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