Minimising water consumption is fundamental, and to achieve this reduction, the following
process optimisation measures can be implemented:
• acting on the water circuit, installing automatic valves that prevent leaks of water when it is
no longer needed
• installation of a high pressure system in the plant for cleaning purposes (or high pressure
cleaning equipment)
• switching from wet off-gas cleaning systems to alternative, non-water consuming systems
(cleaning by dry off-gas cleaning systems, see Section 4.2.3 and 4.3.4)
• installation of ‘in-situ’ waste glaze collection systems
• installation of slip conveying piping systems
• separate collection of process waste water streams from different process steps
• re-use of process waste water in the same process step, in particular repeated re-use of the
cleaning water after suitable treatment.