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

Closes 9 Jan 2026

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BAT 18

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

 

i. appropriate location of equipment/buildings: noise levels can be reduced by increasing the distance between the emitter and the receiver, by using buildings as noise screens and by relocating building exits or entrances.

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ii. Operational measures: this includes techniques such as:

i. inspection and maintenance ofequipment;
ii. closing of doors and windows ofenclosed areas, if possible;
iii. equipment operation by experienced staff;
iv. avoidance of noisy activities at night, if possible;
v. provisions for noise control during maintenance, traffic, handling and treatment activities.

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iii. low noise equipment: This may include direct drive motors, compressors, pumps and flares.

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iv. noise & vibration control equipment (reducers, acoustic insulation, enclosures etc) Applicability may be restricted by a lack of space (for existing plants).

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v. noise attenuation: noise propagation can be reduced by inserting obstacles between emitters and receivers (e.g. protection walls, embankments and buildings).

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Applicable only to existing plants, as the design of new plants should make this technique unnecessary. For existing plants, the insertion of obstacles may be restricted by a lack of space. For mechanical treatment in shredders of metal wastes, it is applicable within the constraints associated with the risk of deflagration in shredders.