A dried sludge product resulting from the treatment process of domestic wastewater. The exact processes followed for the production of the dried sludge are: Preliminary + secondary treatment of the wastewater stream, thickening, dehydration and drying of the excess sludge.

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

8 March 2021 – 16 March 2021

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

no

Key result

Test procedure:

burning rate test: preliminary screening test

Moisture (wt %):

5.7

Remarks on result:

other: The material ignited but did not propagate

The results of the examination are as follows:

Property	Method	Result
Flammability	AS described in A10, EC 440/2008	The material ignited but did not propagate

Conclusions:

It was noted that, on removal of the gas flame the combustion flame and smouldering did not propagate along the powder train.
The material is not highly combustible, according to section A10 of regulations EC 440/2008.

Executive summary:

Dried waste sludge from a biological civic effluent treatment utility was examined to ascertain its flammability, according to the method A.10 described at the Council Regulations (EC), No. 440/2008, Published in O.J.L 142, 2008..

 

The specific methods and results obtained are as follows:

Property	Method	Result
Flammability	As described in section A10, regulations EC 440/2008	The material ignited but did not propagate

Description of key information

The material is not highly combustible, according to section A10 of regulations EC 440/2008.

Key value for chemical safety assessment

Flammability:

not classified