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

Closes 9 Jan 2026

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BAT 13

In order to prevent or, where that is not practicable, to reduce odour emissions, BAT is to use one or a combination of the techniques given below.

The specific measures listed are not applicable to non-waste AD however you must still demonstrate the overarching aim of preventing odour emissions

 

i. Minimising residence times

Minimising the residence time of (potentially) odorous waste in storage or in handling systems (e.g. pipes, tanks, containers), in particular under anaerobic conditions. When relevant, adequate provisions are made for the acceptance of seasonal peak volumes of waste. Only applicable to open systems.

Compliance Status:

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ii. Using chemical treatment

Using chemicals to destroy or to reduce the formation of odorous compounds (e.g. to oxidise or to precipitate hydrogen sulphide). Not applicable if it may hamper the desired output quality.

Compliance Status:

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iii. Optimising aerobic treatment

In the case of aerobic treatment of waterbased liquid waste, it may include: 
— use of pure oxygen; 
— removal of scum in tanks;
— frequent maintenance of the aeration system. In the case of aerobic treatment of waste other than water-based liquid waste, see BAT 36.

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