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Lelystad: the ZAW digestion and composting plant


Visit address

Zeeasterweg 40
8219 PN Lelystad, The Netherlands

Phone: +31 (0)320 25 74 22


Site

Our ‘ZAW’ may be the most efficient facility in the world for the processing of mixed organic waste. It combines aerobic tunnel with indoor floor compostingmeaning it can process both organic waste, organic process waste and sediment with paper and plastic contaminants without a problem. Just think: we have increased the annual processing capacity of the our ZAW plant from 65,000 to 110,000 tons per year over the course of the past 15 years without having to expand or invest any extra capital funds!

A unique composting process

The organic waste arriving at the ZAW composting facility requires hardly any preparation. The different types of waste are mixed with a special inoculum. It is then ready to go into the composting tunnel. This is where the aerobic composting process takes place. This process can take anywhere between 5 and 10 days. However, the waste provided can also be composted using our indoor aerated floors. This process takes a little longer (between 10 and 20 days). In both cases the compost needs to ‘cure’ once it has been removed from the facility before it is ready to be sold to customers in the field of agriculture.

Extremely low odor and particle emissions

One of the things that makes our ZAW location unique is the fact that there are hardly any odors released. This has been achieved by making sure that the building and the facility is constantly under negative pressure preventing the emission of odor and particles into the surrounding area. Part of the air is used for the floor composting process and some of it is used as process air in the composting tunnel. The air is then passed through an air purification system and a biofilter to remove odors before they are emitted via a stack.

Set-up characteristics

Technology
Tunnel composting
PACOM field composting
Input
Organic waste
Process waste from the consumer products
Industry
Organic industrial sediment
Leaf and yard waste
Diapers
Waste gas treatment
Air purifications + stack
Numbers of composting tunnels
8
Days stored in the composting tunnels
5-10 days
Number of fields for field composting
12
Days left in field tunnels
10 – 20 days
Capacity
110.000 tons per year
Compost output
40.000 tons per year
Size of location
1,5 ha
Construction year
1998

More information

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