Guide: Specification for whole digestate, separated liquor and separated fibre : PAS 110:2014
This specification for use of whole digestate, separated liquor and separated fibre derived from the anaerobic digestion (AD) of source-segregated biodegradable materials (PAS 110:2014) is the primary regulatory guide used in Europe.
The purpose of this Publicly Available Specification (PAS) is to remove a major barrier to the development of AD, namely, by encouraging markets for digestates. It is an industry specification against which producers can check that the digestates are of consistent quality and fit for purpose. This PAS, together with other supply and demand market development measures, should encourage more sustainable practices in the management of biowastes and biodegradable materials.
This PAS is a fast-track precursor to a potential future British Standard. This voluntary, industry-led specification sets out the minimum quality required for whole digestate, separated liquor and separated fibre that might be used as fertilizer or soil improver/ conditioner. Meeting its quality and other criteria enables the producer to demonstrate compliance with this PAS.
This PAS is a non-statutory document and does not set regulatory limit values for the quality and use of digestates (whole digestate, separated liquor and separated fibre). All producers are required to comply
with all applicable legislation, irrespective of whether or not the whole digestate, and any separated liquor and fibre, conforms to this PAS. Whilst compliance with this PAS helps producers to demonstrate due diligence in the recovery of controlled, source-segregated biowastes, it does not exempt the digestion facility or its digestates from environmental or health protection regulations (see references in the Foreword). The production and use of digestates derived from controlled biowastes is subject to environmental permitting or waste management licensing regulations, according to the country in which the AD process is located and the digestate is used.
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