REKU Color realizes recirculation of their rinsing water in their powder coating plant

The solution

During the reference visits it became clear, that there were also big differences in the proposed solutions. This is where the modularly designed treatment system from the H2O company in Steinen, Baden, came into play: The VACUDEST M 1.500 CC vacuum evaporator system treats the rinsing water from the pretreatment and the deionized water so ideally that it can be reused without hesitation in the various rinsing and process steps. The distillate can be used directly in the rinses - or post-treated via an ion exchanger as DI water of the highest quality saving valuable drinking water.

The contaminants separated during treatment with the VACUDEST are only fractions of the total quantity (< 5 percent) and can thus be collected by the disposal company in a cost-minimized and professional manner.

Vacuum distillation process

In addition to the already mentioned recirculation of the rinse water, the solution offers several other advantages. The neutralized rinsing water is evaporated under vacuum at a temperature of approx. 86°C. The vapor is then pumped through the vapor recompressor where The steam is compressed to ambient pressure and heated to approx. 120°C in the process. This hot steam is then used to heat the incoming feed. Compared to atmospheric evaporation, this saves more than 95% energy. The distillate produced in this way is virtually free of heavy metals and salts and can be reused directly as rinse water in the running process.

H2O innovations improve rinse water quality

In addition to the evaporator core technology, REKU has integrated H2O innovations into the system that further improve the rinse water quality and keep it at a consistently high level. With the help of these modules, REKU Color can produce in a sustainable, eco-friendly and cost-effective manner.

Clearcat (CC): The module for oily rinse water

The patented process, which has received an award from the Baden-Württemberg Ministry of the Environment, separates organic impurities most effectively. Hydrocarbon concentrations in the distillate of < 10 mg/l can thus be achieved reliably - the use of a maintenance- and cost-intensive residual oil separator is completely eliminated and sustainable savings are achieved.

Activepowerclean (APC): The system for lower energy consumption

The proven APC system has been successfully used in our VACUDEST since 1998. The ceramic, fluidized bed continuously cleans the heat exchanger mechanically during the process. This significantly reduces the formation of deposits on the walls and hence drastically reduces energy and cleaning agent consumption.

E-service/remote maintenance: support from the specialists

The modern Vacutouch machine control system allows convenient remote access to the VACUDEST vacuum distillation system via the Internet. This enables H2O's service experts to provide fast and competent assistance remotely. This eliminates the need for more than 40 percent of all previously required unscheduled on-site visits by service technician. In this way, REKU Color reduces downtimes, increases system availability and reduces its service costs.