Needless knowledge of maintenance

It is a page that summarizes the points of regulation of sewerage and maintenance of facilities as necessary knowledge for environmental conservation of the sea and river for city businesses using public sewerage.
Sections A and B correspond to Class A (for all abatement facilities, etc.) and Class B (for abatement facilities, etc. related to oil (mineral oil) wastewater) in the certification course for abatement facilities, etc. Please mainly watch the section according to the abatement facilities managed.

※There are some changes in the video and summary fields. The changes are as follows.

• Jurisdiction section name: [Before change] Environmental Planning Bureau Water and Soil Environment Section (Sewerage Section) [After change] Sewerage and Rivers Bureau Water Quality Section (Factory Drainage Section)
• Outline Name: [Before change] City of Yokohama, Environmental Planning Bureau Plant Drainage Guidance Guidelines [After Change] Yokohama City Public Sewerage Works Drainage Guidance Guidelines

Slide A&B (PDF: 997KB)

Slide A-1 (PDF: 829KB)

Slide A-2 (PDF: 741KB)

Slide B (PDF: 1,041KB)

For details on neutralization treatment and coagulation sedimentation treatment facilities, see "V Maintenance and management of abatement facilities."

For more information about the oil-water separation tank, see “III Treatment and Maintenance of Wastewater containing Oils”.

It is collection of links to introduce summary of sewer of Yokohama-shi, each approach to have you know sewer business of Yokohama-shi.