Blog

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 Chachoengsao 1. The samples from Nestle factory in Chachoengsao, 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. […]

EEC Movie This short video shows how Elgressy EEC (electrocoagulation) treats water and wastewater without chemicals. What is electrocoagulation? In an EEC reactor, a DC current passes through the water between metal electrodes. This creates coagulants directly in the water, which bind suspended solids, silica, oil and heavy metals into flocs that are then separated. […]

New project SCG – Kraft In September 2020 we completed and commissioned an Elgressy EST system for the cooling towers of SCG Kraft in Kabinburi, Thailand. The system has been performing very well since start-up. The result: 78% less blowdown Blowdown (drain) Before, with chemical treatment about 45 m³/day After, with EST about 10 m³/day […]

Eagle Cement – Philippines EST+EEC In 2017 we installed a combined Elgressy EST and EEC system at Eagle Cement in the Philippines to remove both calcium and silica from the cooling water. Why two technologies? EST (Electrolysis Scale Treatment) removes calcium hardness as solid scale, preventing scale in the cooling system. EEC (Electrocoagulation) removes silica […]

Olympia Towers Bangkok installation In 2017 we installed an Elgressy EST chemical-free water treatment system on the cooling towers of Olympia Thai Tower in Bangkok. Olympia Thai Tower was one of the first buildings in Thailand to use this electrochemical technology. What the client says “More important is your full support and guidance with high […]