Introducing case studies aimed at the rehabilitation of manholes affected by hydrogen sulfide corrosion.
We would like to introduce a case where "D-Hole (Docking Hole)" was implemented for the rehabilitation of sewer manholes. In the Water and Sewerage Department of the Yakage Town Hall in Okayama Prefecture, measures were being taken for areas where hydrogen sulfide corrosion was significantly advanced. This time, they adopted the D-Hole using the "Cassette Method," which is gaining attention as a new construction method. [Evaluation] ■ Although it was the first adoption, a certain level of effectiveness was confirmed in terms of method, construction period, and cost, so they expressed a positive intention to consider further adoption in the future. *For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
【Overview】 ■Customer Name ・Yakage Town Hall, Okada District, Okayama Prefecture, Water and Sewer Division ■Purpose of Construction ・Restoration of manhole erosion due to hydrogen sulfide ■Specifications ・Existing Manhole: RC Type No. 1 Manhole ・Renovated Manhole: PVFR Type No. 1 Manhole *For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
catalog（1）
Download All Catalogs
Company information
Sanyo Facility Engineering Co., Ltd. is engaged in the technological development of water treatment projects. We handle products such as water treatment facilities, the "ADDOX KBS Device," and the "ADDOX OIL Device." Please feel free to contact us if you have any inquiries.
![[Construction Case] 'Self-Supporting Manhole Rehabilitation Method' No. 1-4, up to 10m!!](https://image.www.ipros.com/public/product/image/171/2000666854/IPROS27230987299429943701.jpeg?w=280&h=280)
