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

Closes 9 Jan 2026

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BAT 3

In order to facilitate the reduction of emissions to water and air, BAT is to establish and to maintain an inventory of waste water and waste gas streams, as part of the environmental management system (see BAT 1)  that incorporates all of the following features:

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

 

i. information about the characteristics of the waste to be treated and the waste treatment processes, including:

(a) simplified process flow sheets that show the origin of the emissions;
(b) descriptions of process-integrated techniques and waste water/waste gas treatment at source including their performances;

Compliance Status:

Please include link or reference to supporting documentation. Please provide information on feedstock characteristics and treatment processes. 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
ii. information about the characteristics of the waste water streams, such as:

(a) average values and variability of flow, pH, temperature, and conductivity;
(b) average concentration and load values of relevant substances and their variability (e.g. COD/TOC, nitrogen species, phosphorus, metals, priority substances / micropollutants);
(c) data on bioeliminability (e.g. BOD, BOD to COD ratio, Zahn-Wellens test, biological inhibition potential (e.g. inhibition of activated sludge)

Compliance Status:

Please include link or reference to supporting documentation. Please provide information on waste water generated by the process, including from effluent treatment plants where 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
iii. information about the characteristics of the waste gas streams, such as:

Compliance Status:

(a) average values and variability of flow and temperature;
(b) average concentration and load values of relevant substances and their variability (e.g. organic compounds, POPs such as PCBs);
(c) flammability, lower and higher explosive limits, reactivity;
(d) presence of other substances that may affect the waste gas treatment system or plant safety (e.g. oxygen, nitrogen, water vapour, dust).

Please include link or reference to supporting documentation. Please provide information on air emissions (including biogas/biomethane) generated by the process.  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