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- What is the greatest environmental impact of domestic wastewater?
Here's the text.
Q
What is the greatest environmental impact of domestic wastewater?
Last update date October 4, 2023
A
The drain of the toilet is the most heavy.
Of the pollutants load sources, those originate from toilet wastewater have a BOD of about 30%, nitrogen is about 70%, and phosphorus.
The rest is derived from wastewater discharged from kitchens, laundry, bath, etc.
[Reference Materials]
Water Management and Land conservation Bureau, Ministry of Land, Infrastructure, Transport and Tourism Survey guidelines and commentary on the comprehensive sewerage system maintenance by basin 38p． January, 2015
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: 997-915-096
