NDLI: Adjustment of the Dissolved Oxygen in Aeration Tank and its Effect on Outlet Water Quality

Content Provider	IEEE Xplore Digital Library
Author	Meisheng Liang Lianghu Su
Copyright Year	2008
Description	Author affiliation: Coll. of Environ. Sci. & Eng., Taiyuan Univ. of Technol., Taiyuan (Meisheng Liang; Lianghu Su)
Abstract	The aeration tank is regarded as the key treatment facilities in the conventional activated sludge process. The running condition of the aeration tank has a great influence on the quality of outlet water. The phenomenon that the speed of oxygen consuming is higher than that of oxygen supplying at the head of aeration tank, the concentration of dissolved oxygen is excessive in the back of aeration tank is common in the aeration tank. Taking wastewater treatment plant of Taiyuan Hexi for an example, this paper is focus on the factors influencing conventional activated sludge process in aeration tank, such as dissolved oxygen. After the adjustment of DO, it can be found that the removal efficiency of BOD was improved to a certain extent. Especially during the process of adjustment, when the dissolved oxygen value is at 0.5-1.0 mg/L in the majority of the regional in aeration, its BOD removal efficiency is still in high level. The level of denitrification can not improve after the adjustment and if we want to improve removal effect of $NH_{3}-N$ and TN, we must try best to meet the conditions of nitrification reaction or add nitrogen removal process.
Starting Page	3430
Ending Page	3433
File Size	401630
Page Count	4
File Format	PDF
ISBN	9781424417476
DOI	10.1109/ICBBE.2008.361
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Process design Oxygen Pipelines Valves Educational institutions Nitrogen Sludge treatment Wastewater treatment Photometry Board of Directors
Content Type	Text
Resource Type	Article

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