Swing Corporation undertook the construction and operation of the new facility by DBO (Design, Build & Operate) scheme combining its extensive experience in construction since first installation of night soil treatment facility in 1957 and operation & maintenance knowhow accumulated since 1977.
Swing Corporation will be engaged in safe and sound operation and management of the facility for 15 years by utilizing its experience and past records based on more than 300 O&M locations nationwide supported by over 3,000 field engineers.

Shaft Sliding Screw Press Dehydrator, most widely used system for night soil treatment, will directly dehydrate and discharge night soil as alternative solid fuel with moisture content of less than 70%. Separated water from dehydration will be diluted and discharged to sewer.
This Value Sludge System does not require pre-treatment facility since it can dehydrate night soil sludge without removing residues.

Known as a historical town, Shiwa has many ruins and remains dating from Jomon period (more than 2,300 years ago) and precious archeological remains were found from the construction site. Shiwa Town is also famous for fruit-growing and apples, grapes and pears are grown on a large scale.