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

Closes 9 Jan 2026

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BAT 14

In order to prevent or, where that is not practicable, to reduce diffuse emissions to air, in particular of dust, organic compounds and odour, BAT is to use an appropriate combination of the techniques given below. Depending on the risk posed by the waste in terms of diffuse emissions to air,

Applicable – This relates to fugitive, non-channelled emissions. Any technique referencing ‘waste’ handling will also be applicable to handling non-waste feedstock. Please Indicate which techniques are applied and why others are not appropriate.

For each parameter below, confirm the measurements in place for your particular activity, the equipment used and where these measurements are undertaken. 

 

i. Minimising the number of potential diffuse emission sources Generally applicable.

Applicable – This relates to fugitive, non-channelled emissions. Any technique referencing ‘waste’ handling will also be applicable to handling non-waste feedstock. Please Indicate which techniques are applied and why others are not appropriate.

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
ii. Selection and use of high integrity equipment. Applicability may be restricted in the case of existing plants due to operability requirements.

Compliance Status:

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iii. Corrosion prevention. Generally applicable.

This includes techniques such as:

  • appropriate selection of construction materials;
  •  lining or coating of equipment and painting of pipes with corrosion inhibitors.

 

Compliance Status:

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Please make sure your file is under 25MB
iv. Containment, collection and treatment of diffuse emissions. The use of enclosed equipment or buildings may be restricted by safety considerations such as the risk of explosion or oxygen depletion. The use of enclosed equipment or buildings may also be constrained by the volume of waste.

This includes techniques such as:

  • storing, treating and handling waste and material that may generate diffuse emissions in enclosed buildings and/or en[1]closed equipment (e.g. conveyor belts);
  • maintaining the enclosed equipment or buildings under an adequate pressure;
  •  collecting and directing the emissions to an appropriate abatement system (see BAT Section 6.1) via an air extraction system and/or air suction systems close to the emission sources
 

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
v. Dampening

Dampening potential sources of diffuse dust emissions (e.g. waste storage, traffic areas, and open handling processes) with water or fog.

Compliance Status:

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vi. Maintenance

This includes techniques such as: 

  • ensuring access to potentially leaky equipment;
  • regularly controlling protective equipment such as lamellar curtains, fast-action doors

Compliance Status:

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vii. Cleaning of waste treatment and storage areas

This includes techniques such as regularly cleaning the whole waste treatment area (halls, traffic areas, storage areas, etc.), conveyor belts, equipment and containers.

Compliance Status:

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viii. Leak detection and repair (LDAR) programme

When emissions of organic compounds are expected, a LDAR programme is set up and implemented using a risk-based approach, considering in particular the design of the plant and the amount and nature of the organic compounds concerned.

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