This part of BS 8525 specifies requirements and gives methods of test for
packaged and/or site-assembled domestic greywater treatment equipment. This
standard applies to treatment equipment where all prefabricated components
are factory- or site-assembled by one manufacturer and tested as a single unit.
This part of BS 8525 does not require specific water treatment processes to be
used. However, it applies to equipment that treats bathroom greywater so that
it is of a quality suitable for prescribed domestic uses in residential, commercial,
industrial or public premises. It is not applicable to treatment equipment which
processes waste from WCs and kitchens.
The test methods described in Annex B and Annex D have been devised for the
type testing of domestic greywater treatment equipment with a nominal
treatment capacity of up to 10 m3 per day. They are intended to be carried out
on greywater treatment equipment under controlled conditions using public
mains water and synthetic greywater. These test methods are not intended for
commissioning or validation of the on-site performance of the domestic
greywater treatment equipment.
NOTE 1 Recommendations for the installation, commissioning and validation of
on-site performance of packaged and/or site-assembled domestic greywater
treatment equipment as part of a greywater system are given in BS 8525-1.
NOTE 2 Annex A specifies requirements for the greywater treatment equipment
test set-up and preparation; Annex B to Annex D specify greywater treatment
equipment test methods; Annex E and Annex F are informative annexes, the former
giving recommendations regarding analytical methods and the latter providing an
example of a product information sheet.