Photograph source： P.S. Mitsubishi Construction Co.,Ltd
| Structure name | Nankoen treatment plant |
|---|---|
| Structure type | PC Egg-shaped Sludge Digestion Tanks |
| Structural factors | Volume1,600㎥、Total height20.8ｍ(Ground height15.2m）、The maximum inner diameter13.5m |
| Operator | Iwamizawa city |
| Designer | NJS CO.,LTD. |
| Contractor | Joint-venture group Fudo Tetra Corporation・Fujiigumi Construction Co.,Ltd・ P.S. Mitsubishi Construction Co.,Ltd |
| Location | Iwamizawa city |
| Completion date | Phase I construction 1985 Phase II construction 1990 |
| Overview |
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