NS Environmental was approached several years ago to find a route to market for the huge amounts of compost oversize that was being produced as a bi-product of the PAS 100 compost production. Initially we looked at Open Windrow oversize, but we were subsequently approached by large scale composters to look at the oversize from IVC and AD plants.
Our initial research showed that if the contamination in the compost oversize could be reduced, we would have an innovative new product to market, so we started trials with 5 composting sites to see if we could meet the following standard:
1) Reduce all plastic to less than 2%
2) Reduce all stones to less than 1%
3) Reduce metals to less than 1%
Eventually we managed to achieve these figures consistently for Windrow, AD and IVC oversize, which means that we have a product to take to market. As can be seen from the photos, this process works!
Our current supply of oversize is in the region of 30,000 t annually but we anticipate that the figure will rise to 75,000 t in the near future.
Our goal is to provide this product throughout the UK and Europe so if you have a suitable material please phone us on 01293 804680 and we will be happy to discuss prices and criteria for working with us.