Blog

Carbon steel is the backbone of cooling towers, chillers and pipework. Learn how its grades differ, why it corrodes in cooling water, and how to protect it.

Cooling towers are behind most large Legionnaires’ disease outbreaks. Learn how Legionella grows, which test results demand action, and how to prevent it.

Non-Chemical vs Chemical Cooling Tower Treatment: Cost, ROI and Risks Non-chemical cooling tower treatment is an investment that pays for itself; chemical dosing is a cost that never stops. For hospitals, hotels, office towers and factories worldwide, that difference decides the true cost of running a cooling system with proper maintenance over 15 years or […]

In October 2025 the EST system at the United Nations building in Bangkok got a new SCADA: live pH, conductivity, power, pump and alarm status for every EST unit.

Philippines Pilot project We ran a pilot project in the Philippines to test Elgressy EEC (electrocoagulation) for silica removal and wastewater treatment. Why silica matters Silica is often the limit on how far cooling water can be concentrated. Above a certain level it forms a hard glassy scale that is very difficult to remove. EEC […]

Independent measurements at Barranquilla Airport, Colombia: 6.75% lower chiller load, 93 MWh and 11.75 t CO2e saved a year, and no more biocides.

Taj Holiday Village, Goa piloted Elgressy EST in the IFC TechEmerge cooling program: cycles of concentration from 3 to 7, balanced water and no chemicals.

Beta Weave EST installed In 2019 we installed an Elgressy EST chemical-free cooling water treatment system at Beta Weave in Bangkok, Thailand. The system keeps the cooling water free of scale and biofilm without treatment chemicals. How EST works: Elgressy EST treats a side stream of the cooling water by controlled electrolysis. Calcium hardness precipitates […]

Nestle supply water pilot Pilot test on silica removal for Nestle Chachoengsao -Thailand EEC-PILOT_NESTLE-THAILAND_14.06.2015 The Pilot Report: EEC Nestle Bangkok 1. The samples from Nestle factory in Bangkok, Thailand, arrived at our factory on the 11th of June 2015, after it was released by the environmental ministry. Fig 1. The EEC pilot system sketch. 2. […]