Call for Evidence : ​Non Waste Anaerobic Digestion over 100 tonnes per day: Permit technical requirements ​

Closes 9 Jan 2026

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BAT 2

In order to improve the overall environmental performance of the plant, BAT is to use all of the techniques given below.

Applicable – the term ‘waste’ here is directly interchangeable with ‘non-waste’ feedstock

For each parameter below, confirm the measurements in place for your particular activity, the equipment used and where these measurements are undertaken. Please provide information on feedstock tracking procedures, if applicable.

 

a. Set up and implement waste characterisation and pre-acceptance procedures

These procedures aim to ensure the technical (and legal) suitability of waste treatment operations for a particular waste prior to the arrival of the waste at the plant. They include procedures to collect information about the waste input and may include waste sampling and characterisation to achieve sufficient knowledge of the waste composition. Waste pre-acceptance procedures are risk-based considering, for example, the hazardous properties of the waste, the risks posed by the waste in terms of process safety, occupational safety and environmental impact, as well as the information provided by the previous waste holder(s).

Compliance Status:

Upload any supporting information. Please include the Permit number and installation name in the header.

Please make sure your file is under 25MB
b. Set up and implement waste acceptance procedures

Acceptance procedures aim to confirm the characteristics of the waste, as identified in the pre-acceptance stage. These procedures define the elements to be verified upon the arrival of the waste at the plant as well as the waste acceptance and rejection criteria. They may include waste sampling, inspection and analysis. Waste acceptance procedures are risk-based considering, for example, the hazardous properties of the waste, the risks posed by the waste in terms of process safety, occupational safety and environmental impact, as well as the information provided by the previous waste holder(s).

Compliance Status:

Upload any supporting information. Please include the Permit number and installation name in the header.

Please make sure your file is under 25MB
c. Set up and implement a waste tracking system and inventory

A waste tracking system and inventory aim to track the location and quantity of waste in the plant. It holds all the information generated during waste pre-acceptance procedures (e.g. date of arrival at the plant and unique reference number of the waste, information on the previous waste holder(s), pre-acceptance and acceptance analysis results, intended treatment route, nature and quantity of the waste held on site including all identified hazards), acceptance, storage, treatment and/or transfer off site. The waste tracking system is risk based considering, for example, the hazardous properties of the waste, the risks posed by the waste in terms of process safety, occupational safety and environmental impact, as well as the information provided by the previous waste holder(s).

Compliance Status:

Please include link or reference to supporting documentation. Please provide information on feedstock tracking procedures, if applicable.  If the BAT Conclusion is not applicable, please explain why.


 

Upload any supporting information. Please include the Permit number and installation name in the header.

Please make sure your file is under 25MB
d Set up and implement an output quality management system
This technique involves setting up and implementing an output quality management system, so as to ensure that the output of the waste treatment is in line with the expectations, using for example existing EN standards. This management system also allows the performance of the waste treatment to be monitored and optimised, and for this purpose may include a material flow analysis of relevant components throughout the waste treatment. The use of a material flow analysis is risk-based considering, for example, the hazardous properties of the waste, the risks posed by the waste in terms of process safety, occupational safety and environmental impact, as well as the information provided by the previous waste holder(s).
 

Compliance Status:

Upload any supporting information. Please include the Permit number and installation name in the header.

Please make sure your file is under 25MB
e. Ensure waste segregation

Waste is kept separated depending on its properties in order to enable easier and environmentally safer storage and treatment. Waste segregation relies on the physical separation of waste and on procedures that identify when and where wastes are stored.

May have limited relevance to NWAD.

 

Compliance Status:

Upload any supporting information. Please include the Permit number and installation name in the header.

Please make sure your file is under 25MB
f. Ensure waste compatibility prior to mixing or blending of waste

Compliance Status:

Compatibility is ensured by a set of verification measures and tests in order to detect any unwanted and/or potentially dangerous chemical reactions between wastes (e.g. polymerisation, gas evolution, exothermal reaction, decomposition, crystallisation, precipitation) when mixing, blending or carrying out other treatment operations. The compatibility tests are risk-based considering, for example, the hazardous properties of the waste, the risks posed by the waste in terms of process safety, occupational safety and environmental impact, as well as the information provided by the previous waste holder(s).

May have limited relevance to NWAD

Upload any supporting information. Please include the Permit number and installation name in the header.

Please make sure your file is under 25MB
g. Sort incoming solid waste

This  aims to prevent unwanted material from entering subsequent waste treatment process(es). It may include: manual separation, metals separation, optical separation, density separation and size separation 

May have limited relevance to NWAD

Compliance Status:

Upload any supporting information. Please include the Permit number and installation name in the header.

Please make sure your file is under 25MB