Cellvation® process

Circular economy steps

STPs

Salsnes

Filter

Grit

Removal

Cellulose

Washer

CellDryer

& Polisher

CellPress

Hygienisation

Recell

1

SEWAGE TREATMENT PLANTS (STPs)

Reduce waste, recovery and reuse of materials are crucial to maintaining a healthy and green environment for future generations. Through the Cellvation® process, cellulose is recovered and transformed into a resource. It all starts at the sewage treatment plants where our Cellvation® technology is installed.

 
 

2

GRIT REMOVAL

Firstly, the easily settable solids like sand, stones and grit are removed from the sewage water flow. Grit settles by gravity; accordingly, it is a tank where the heavy materials (mostly sand) can settle and can then be removed from the water. By doing this, the possibilities of clogging systems and causing abrasion damage is reduced.

 

3

CELLULOSE WASHER

Then, the sewage water that flows from the grit removal passes through a cellulose washer through which hair and other organic contaminants are taken out. At this stage, most of the contaminants such as hair and plastics are removed from the sewage water. This increases the efficiency of the waste water treatment process and indirectly affects the sludge treatment.

4

SALSNES FILTER

After the cellulose washer, the sewage water flows through to the Salsnes Filter, which is a rotating belt filter. The filter works by rotating a filter cloth, creating an endless filter. The sewage water is fed into the machine on top of the filter cloth and then flows through it. The particles in the sewage water form a precoat on top of the filter cloth creating an even smaller pore size. The sievings from the Salsnes Filter are partially dewatered on the filter cloth, before being blown off by an air knife. A screw transports the sievings to the CellPress. In other words, the amount of solid materials are reduced by this step to maximize the waste water treatment plant capacity.

 

5

CELLPRESS

The sievings filtered out of the sewage water by the Salsnes Filter installation are dewatered by the CellPress. Simply put, this step removes part of the water from the sievings.

 
 

6

HYGIENISATION

The sievings are hygienised to reach the EPA class A rating, ensuring that the product produced is clean and safe to use.

7

CELLDRYER &

POLISHER

When the product is dried, the larger chunks of cellulose are broken down to smaller parts. From there, the cellulose is turned into fluffy fibres or compacted into pellets, depending on customer demand. 

 

8

RECELL®

Recell® is the renewable and sustainable cellulose-based material produced by the Cellvation® process. Click the button below to learn more about Recell®.

 

Cellvation® is a circular economy friendly and cost reducing solution. By applying the Cellvation® process to the sewage water treatment plant, we reclaim and upcycle cellulose from sewage water, preventing it from becoming a sewage waste. It is worth noting that our process does not influence the quality of the effluent of the STPs.

 

Would you like to know more about the process or would you like to achieve both environmental and economic benefits in your STP?

Don't hesitate to contact us, our experts will be happy to discuss your needs!

© 2018 by Cellvation B.V.