Processing of Activated Carbon

Activated Carbon is a very fine highly porous pure carbon powder which is used for the adsorption and the removal of unwanted organic substances and unpleasant smells and malodour out of liquids.

Main fields of application are the treatment and purification of drinking water, waste water and leachate water from landfills. On the other hand,

Activated Carbon is also being used in the production of filter materials (e.g. out of PUR-foam), to separate Caffeine and for the clarification of sugar solutions. Activated Carbon Powder (PAC) is very dusty. The dust is nasty and contaminates all the environment.

The powder is very light and for this reason it tends to float and agglomerate on top of liquid surfaces. To develop the properties of the powder, it must be completely wetted, dispersed and homogeneously distributed in the liquid.

Simple pouring or transporting onto the surface of the liquid is no longer acceptable. Activated Carbon dust is combustable. Handling must be carried out with dust-ex-protected equipment.

With the TDS-Induction Mixer or the Conti-TDS Activated Carbon is being inducted dust-free from any bag, BigBag or powder container directly into the liquid.

• No lifting up of paper bags!
• No pouring!
• No dust, neither during the induction from a bag nor on top of the liquid!
• No agglomerates, no crusts, no layers of partially wetted dust!
• Complete wetting, intensive dispersing and homogeneous distribution of the Activated Carbon in the liquid
• After the induction, the machine is switched to low speed and may be used as a perfect mixer (TDS-Induction Mixer) or for additional dispersing and pumping out (Conti-TDS).
• Concentrations up to approx. 28% are possible without any problem. Higher concentrations might get viscous like a gel.
• All the inner area of the machine in dust-ex protected execution (acc. to ATEX or other national regulations). Outside of the machine
  there is no need for an dust-Ex-zone classification, this means installation in a non-hazardous area is possible.

Machine

Power

Batch size

Induction rate

from bags

from BigBags

Conti-TDS-3

15 - 18 kW

beliebig

10 -15 kg/min

18 -24 kg/min

Conti-TDS-4

37 kW

beliebig

20 - 30 kg/min

30 - 40 kg/min

Conti-TDS-5

37 - 45 kW

beliebig

25 - 40 kg/min

33 - 50 kg/min

2.200 SL/GD7-2/3 TDS

2,2 kW

100 - 250 litres

4 - 5 kg/min

3.000 SL/GD7-3/4 TDS

3,0 kW

150 - 500 litres

6 - 12 kg/min

5.000 SL/GD7-4 TDS

5,0 kW

300 - 800 litres

10 - 14 kg/min

7.500 SL/GD7-4/5 TDS

7,5 kW

800 - 1.500 litres

12 - 16 kg/min

11.000 SL/GD/-4/5 TDS

11,0 kW

1.500 - 2.000 litres

14 - 18 kg/min

15.000 SL/GD7-4/5 TDS

15,0 kW

2.000 - 3.000 litres

18 - 22 kg/min

22.000 SL/GD7-4/5 TDS

22,0 kW

3.000 - 4.000 litres

20 - 25 kg/min

The induction rates given in the above chart are based on water and normal conditions for the installation.
TDS-Machines may be used to induct over a long distance, in this case the induction rate will slightly drop.

The size of the TDS-Induction Mixer is based on the size of the vessel for the liquid. The Conti-TDS is used independent from the size of the batch.

Processing system based on a Conti-TDS in combination with a vessel for liquids:

The Activated Carbon is inducted dust-free directly from a BigBag.
For an exact dosing of the liquid and the powder, the vessel is installed on load cells.
With such a system it is possible to produce highly concentrated basic suspensions, which are continuously and automatically dosed into a stream of water.
The size of the vessel may be determined in such a way, that the suspension is produced only once a day and then it is automatically dosed over a period of 24 hours without any problem and fail-safe into the liquid stream.
A Conti-TDS may be connected to more than only one vessel as well. In large water treatment plants the vessels for liquids may be executed e.g. as 30 m3 concrete tanks.