Sumitomo Heavy Industries Environment Co., Ltd.
Sumiju Environmental Engineering, Inc.
- 1961
- Sumitomo Heavy Industries, Ltd., launches sewage treatment business and installs sedimentation basin equipment in Tokyo.
- 1966
- Concludes technical cooperation agreement for sludge scrapers with Link-Belt in the United States.
- 1969
- Sumitomo Heavy Industries establishes Environmental Sanitation Laboratory.
- 1971
- Merges with ETV in the United States to establish Sumitomo Jukikai Envirotech Inc. (wastewater treatment equipment for industries ).
- 1978
- Izumi Environmental Management Co., Ltd., established; begins operations and maintenance business.
- First sewage treatment facility operations management project established in Tokyo.
- First human-waste treatment facility operations management project established in Ibaraki.
- First CP facility operations management project established in Kanagawa.
- 1979
- First leachate treatment facility management project established in Chiba.
- Company renamed to Izumi Environmental Engineering Co., Ltd.
- 1981
- Concludes technical cooperation agreement for the SUMIRATOR OD system with ESMIL in the Netherlands.
- 1983
- Launches sales of SUMICUTTER (residue crusher).
- Launches sales of industrial chemicals.
- 1986
- Receives order for a large-scale sewage treatment system in Seoul, Korea.
- Delivers equipment to the Sungai Semenyih Water Treatment Plant in Selangor, Malaysia.
- 1987
- Company renamed from Izumi Environmental Engineering Co., Ltd., to Sumiju Environmental Engineering, Inc.
- 1989
- Develops SUMI-THICKENER super high-rate coagulation equipment.
- Introduces UASB anaerobic wastewater treatment technology from the Netherlands.
- 1991
- First & second garbage incineration facility operations management projects established in Ibaraki and Osaka.
- 1991
- Sumitomo Heavy Industries, Ltd., merges with Sumitomo Jukikai Envirotech Inc.
- 1992
- Sumiju Environmental Analysis Center Co., Ltd., established in Hiratsuka, Kanagawa
- 1993
- SHI Airport System Co., Ltd., established to manage operations and maintenance of the wastewater treatment facility on Kansai International Airport Island (Kansai International Airport opens in April 1994.)
- 1993
- Sumiju Environmental Analysis Center Co., Ltd., registered as measurement certification company (Concentration).
- 1995
- Introduces EGSB anaerobic wastewater treatment technology from the Netherlands.
- 1996
- Cumulative number of SUMICUTTER delivered reaches 500 units.
- 1999
- Subcontracted for special dioxins prevention project (subsidy) at garbage incineration facilities in Nara.
- 2002
- Cumulative number of SUMICUTTER delivered reaches 1,000 units .
- O&M Promotion Department inaugurated (all-inclusive service subcontract: total maintenance systematization).
- Super Water Co., Ltd., established as water supply utility company.
- 2002
- Develops cascade-type sludge scraper.
- Releases an integral anaerobic wastewater treatment unit.
- Sumiju Environmental Analysis Center Co., Ltd., moves from Hiratsuka to Yokosuka.
- 2003
- First long-term all-inclusive operations management subcontract agreement for sewage treatment facility established in Toyama.
- First long-term all-inclusive operations management subcontract agreement for human waste treatment facility established in Aichi.
- First water purification facility operations management project established in Fukushima.
- First fee collection agency service for a water purification facility established in Yamaguchi.
- 2003
- Releases SUMIRATOR UD SYSTEM ,an aeration equipment for oxidation ditch
- 2004
- Exports begin of SUMICUTTER to China.
- 2004
- Releases SMT-U, an integrated SUMI-THICKENER.
- 2005
- Licenses SUMI-THICKENER technology to Kvaerner Pulping AB.
- 2006
- Cumulative number of SUMIRATOR OD system delivered reaches 1,000 units .
- Delivers first AquaSAT low-concentration anaerobic treatment equipment to Asahi Breweries' Ibaraki Factory.
- 2007
- Spun off from Sumitomo Heavy Industries, Ltd., to become Sumitomo Heavy Industries Environment Co., Ltd.
- 2008
- Sumitomo Heavy Industries Environment Co., Ltd., merges with Sumiju Environmental Analysis Center, Co., Ltd.
- 2009
- First long-term all-inclusive operations management subcontract project for garbage incineration facility established in Osaka.
- 2011
- First long-term designated administrator service contract for human waste treatment facility established in Oita.
- 2012
- Launches sales of Smart Flow System for water pipe automatic discharge management.
- 2014
- SUMIJETTER receives Japan Machinery Federation Chairman's Award.
- 2015
- Subcontracted for advanced equipment installation project (grant) for garbage incineration facility in Ehime.
- Subcontracted for core equipment modification project (grant) for human waste treatment facility in Gunma.
- 2016
- Launches sales of Chelate Checker, a simple device for chelate dosage management.
- 2017
- Sumitomo Heavy Industries Environment Co., Ltd., merges with Sumiju Environmental Engineering, Inc.