PAS110

PAS 110:2014 Specification for whole digestate, seperated liquor and seperated fibre derived from from the anaerobic digestion of source-segregated biodegradable materials. PAS110 was developed by WRAP to help create a market for the use of anaerobic digestate as a renewable fertiliser. It came into effect on 31 July 2014; published under licence from the British Standards Institution (BSI).

What is PAS 110

The purpose of PAS110 was to remove a major barrier to the development of AD 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. [PAS110]] sets out the minimum quality required for whole digestate, seperated liquor and seperated fibre that might be used as a fertiliser or soil improver/conditioner. Meeting its quality and other criteria enables the producer to demonstrate compliance with PAS.

AD is an important technology for the local recovery of source seperated Bio-waste, the Biogas they produce can be converted into energy for the use throughout the AD system itself, for local use, for supply as electricity to the national grid or for processing into Biofuel for vehicles.

The whole digestate, seperated liquor and seperated fibre outputs that AD systems can produce have significant fertiliser value and can return useful amounts of organic matter to soils. Such digested materials are particulalry suitable for maintaining and improving soil fertility and function.

What does PAS 110 specify

PAS110 specifies:

• controls on input materials and the management system for the process of AD and associated technologies;
• that the AD system is allowed to accept packaged biowastes/biodegradable non-waste materials that are depackaged prior to AD
• the minimum quality of whole digestate seperated liquor and seperated fibre
• information that is required to be supplied to digestate customers

The PAS requires the producer to undertake hazard analysis and critical control point (HACCP) planning and to implement and maintain a Quality Management System that ensures digestates meet the minimum quality requirements set out in the PAS are fit for purpose.