Tokyo, Oct. 17 -- Japanese biggest Lake Biwa shaped up environment protection technology of Hiyoshi in Shiga Prefecture. Its achievement brought the fame "Guardian God of Environment" to Hiyoshi.

Tadashi Suzuki CEO of Hiyoshi looks back "We started job history as waste treatment service in 1955. Its policy is "Create symbiosis society of human being and nature". Hiyoshi's technology covers the activity of measuring, watching, protecting and creating. First mission was maintenance and management of wastewater treatment, afterward analysis of water and sewage was added. With time passing, not only water treatment but also air condition analysis was required. "

In 1977 big trial came to Hiyoshi. It was recovering of clean water in Lake Biw...