English 
Hakuto has launched a new scale inhibitor called Deponax P-72, aimed at reducing calcium scale in wastewater treatment processes. The product is built using biomass-derived materials, keeping environmental impact low while addressing a very practical operational problem.
In wastewater treatment lines that use slaked lime, especially in semiconductor and electronics manufacturing, calcium scale buildup is a persistent issue. It leads to pipe blockages, equipment trouble, and frequent cleaning. The challenge becomes sharper when treating fluorine-containing wastewater, where scale prevention cannot interfere with fluoride removal performance. Deponax P-72 is designed to handle both without trade-offs.
The inhibitor works through multiple mechanisms. It suppresses scale precipitation, slows crystal growth, and prevents aggregation and adhesion. This allows calcium scale formation to be controlled more effectively with a relatively small dosage. Tests showed that adding around 500 ppm significantly reduced scale deposition in laboratory settings. Long-term use over three months in a semiconductor factory also confirmed lower scale buildup inside pipes.
こちらもお読みください： アンリツ子会社デウエトロンソリューションズが国内販売を開始
Deponax P-72 can be added directly to existing wastewater treatment facilities without modification. Its intended impact is straightforward. More stable operations, lower maintenance load, and better alignment with environmental and regulatory expectations. The product will be showcased at InterAqua 2026 in Tokyo, signaling 白戸’s focus on practical, sustainability-linked industrial chemistry rather than experimental solutions.
日本語