Division BAT 60 In order to improve the general environmental performance of the co-incineration of waste in combustion plants, to ensure stable combustion conditions, and to reduce emissions to air, BAT is to use technique BAT 60 (a) below and a combination of the techniques given in BAT 6 and/or the other techniques below.
United Kingdom
| Technique | Description | Applicability | |
|---|---|---|---|
| a. | Waste pre-acceptance and acceptance | Implement a procedure for receiving any waste at the combustion plant according to the corresponding BAT from the Waste Treatment BREF. Acceptance criteria are set for critical parameters such as heating value, and the content of water, ash, chlorine and fluorine, sulphur, nitrogen, PCB, metals (volatile (e.g. Hg, Tl, Pb, Co, Se) and non-volatile (e.g. V, Cu, Cd, Cr, Ni)), phosphorus and alkali (when using animal by-products). Apply quality assurance systems for each waste load to guarantee the characteristics of the wastes co-incinerated and to control the values of defined critical parameters (e.g. EN 15358 for non-hazardous solid recovered fuel) | Generally applicable |
| b. | Waste selection/limitation | Careful selection of waste type and mass flow, together with limiting the percentage of the most polluted waste that can be co-incinerated. Limit the proportion of ash, sulphur, fluorine, mercury and/or chlorine in the waste entering the combustion plant. Limitation of the amount of waste to be co-incinerated | Applicable within the constraints associated with the waste management policy of the Member State |
| c. | Waste mixing with the main fuel | Effective mixing of waste and the main fuel, as a heterogeneous or poorly mixed fuel stream or an uneven distribution may influence the ignition and combustion in the boiler and should be prevented | Mixing is only possible when the grinding behaviour of the main fuel and waste is similar or when the amount of waste is very small compared to the main fuel |
| d. | Waste drying | Pre-drying of the waste before introducing it into the combustion chamber, with a view to maintaining the high performance of the boiler | The applicability may be limited by insufficient recoverable heat from the process, by the required combustion conditions, or by the waste moisture content |
| e. | Waste pretreatment | See techniques described in the Waste Treatment and Waste Incineration BREFs, including milling, pyrolysis and gasification | See applicability in the Waste Treatment BREF and in the Waste incineration BREF |