While no removal of NPs occurs in the primary sedimentation basin, the ratio of NPs is reduced to about 32% in the secondary effluent, which revealed that about 68% of NPs are removed by activated sludge treatment.
The decrease in the amount of waste generated was due to a decline in activated sludge from the wastewater processing facilities of the Onoda and Yoshitomi plants, which accounted for 63%(75% in fiscal 2017) of the decrease.
In a wastewater treatment plant employing a conventional activated sludge process, influent(pre-treated wastewater) and treated wastewater were sampled. Then the biological response test was conducted with the above-mentioned test organisms soaked in the sample water.
Simulation technology for sewage treatment facilities|JFE Engineering Corporation The activated sludge method, which represents sewage treatment processes, is characterized by the capability to remove not only organic substances but also eutrophication-inducing nitrogen and phosphorus if it is designed and operated under the proper conditions.
Since its advent about 100 years ago, the principle of the activated sludge process has not changed to date, proving itself as an excellent and robust engineering process. Functions of individual microbes, the main actors of activated sludge, and their interactions are, however, not fully understood yet.
The LAS removal ratio is over 99% by the conventional activated sludge process and over 87% by other methods based on sewage treatment by contact of the sewage with biofilm under aerobic conditions(rotating, gravel contact, aerobic, contact, and trickling). High removal ratios were confirmed at plants that treat sewage using aerobic microbes including the conventional activated sludge process.
活性汚泥排水処理システム。
Activated sludge wastewater treatment system.
余剰活性汚泥の濃縮。
Thickening of surplus active sludge.
EGSB+活性汚泥処理法。
EGSB+ activated sludge treatment process.
活性汚泥を使用しない生物処理。
Bio-treatment without using activated sludge.
用語集:活性汚泥呼吸阻害試験シナネンゼオミック。
Terminology: Activated sludge respiration inhibition test Sinanen Zeomic Co., Ltd.
English
中文
عربى
Български
বাংলা
Český
Dansk
Deutsch
Ελληνικά
Español
Suomi
Français
עִברִית
हिंदी
Hrvatski
Magyar
Bahasa indonesia
Italiano
Қазақ
한국어
മലയാളം
मराठी
Bahasa malay
Nederlands
Norsk
Polski
Português
Română
Русский
Slovenský
Slovenski
Српски
Svenska
தமிழ்
తెలుగు
ไทย
Tagalog
Turkce
Українська
اردو
Tiếng việt