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  8. According to the standard activated sludge method, the retention time of the reaction tank is 6 to 8 hours, but how much is it for advanced treatment?

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Q

According to the standard activated sludge method, the retention time of the reaction tank is 6 to 8 hours, but how much is it for advanced treatment?

Last update date October 4, 2023

A

According to the anaerobic aerobic aerobic aerobic method adopted in Yokohama City, the design reaction tank stays around 10 to 12 hours.
This varies depending on the treatment method, inflow water quality, discharged water quality, etc.

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

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Page ID: 131-854-385

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