- Yokohama-shi Top Page
- Lifestyle and procedures
- Community Development and Environment
- Rivers and sewers
- Sewer
- Sewerage and River FAQ
- Advanced Processing List
- How much nitrogen and phosphorus can be obtained by advanced treatment?
Here's the text.
How much nitrogen and phosphorus can be obtained by advanced treatment?
Compared to the current standard sewage treatment method, how much nitrogen and phosphorus can be removed by advanced treatment?
Last update date October 4, 2023
The removal rate of treatment facilities that have introduced advanced treatment is about 70% for nitrogen and about 80% for phosphorus.
Nationwide, medium to large-scale treatment facilities use a treatment method called the standard method. According to the standard activated sludge method, nitrogen and phosphorus, which cause eutrophication, is about 50%.
For inquiries to this page
Sewerage River Bureau Sewerage Facilities Department Water Quality Section
Phone: 045-621-4343
Phone: 045-621-4343
Fax: 045-621-4256
Email address: gk-suishitsu@city.yokohama.lg.jp
Page ID: 726-803-084