Digital Realty Singapore uses electrolysis to clean its cooling water

Ng told us that each DCI unit costs around SG$33,000 (US$25,000) and can treat - very roughly - enough water for about 1MW to 1.3MW of cooling infrastructure. To cover the whole output of SIN10 would therefore need 20 to 25 DCI units, which suggests a cost of maybe US$500,000, although no figures have been quoted to us for the deal.

The installation was partially funded by a Singapore government program to save water, and Digital claims it saves 1.24 million liters of water per month.

So many questions... What are they putting in their cooling water to need cleaning it with electrolytes? Metals?