NDLI: Removal of iron and manganese from micro-polluted surface source water using bio-sand filtration system

Content Provider	IEEE Xplore Digital Library
Author	Si-min Li Bo Zhao Zhennan Shi Wei Zhang
Copyright Year	2010
Description	Author affiliation: College of Urban Construction, Hebei University of Engineering, Handan, China (Si-min Li; Bo Zhao; Zhennan Shi; Wei Zhang)
Abstract	Bio-sand filter was adopted to study the iron and manganese removal from micro-polluted surface source water, and the effect by biofilm formation method, dissolved oxygen (DO) and water temperature on iron and manganese were analyzed. The results demonstrate that natural start-up and inoculm start-up methods of filters both have a high removal of iron and manganese. The former method is better than the latter one on iron and manganese removal, but it is less stable. When the DO in water are 1.5–2.5mg/L, 3.0–5.0mg/L, 5.5–6.5mg/L and 7.0–8.0mg/L, the average removal rate of iron are 62.11%, 82.95%, 83.08% and 70.81%, respectively, and removal of manganese are 74.89%, 80.30%, 75.44% and 71.46% respectively. Changing DO values under 4.0–5.0mg/L had no remarkable effect on the removal rate. When the value is about 4.0mg/L, the DO is enough to remove manganese and iron. The temperature of water is a significant factor on the manganese removal. When it is below 15°C and 20–26°C, the average removal rate of iron are 70.88% and 82.17%, and the removal of manganese are 64.46%, 78.95%, respectively. The most suitable environmental temperature is about 22°C when iron and manganese coexists. We can reduce the filtration rate to improve the removal efficiency at low temperature. When bio-sand filtration is added after the process of coagulation and sedimentation, the efficiency of removing iron and manganese would be further improved. The concentration of iron and manganese in the effluent is much lower than 0.3mg/L and 0.1mg/L which achieve drinking water-quality standards.
Starting Page	1980
Ending Page	1983
File Size	184147
Page Count	4
File Format	PDF
ISBN	9781424477371
e-ISBN	9781424477395
DOI	10.1109/MACE.2010.5536419
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Removal Mn Temperature Filtration Bio-film formation method Coagulation Educational institutions Iron Micro-polluted surface source water Filters Microorganisms Water pollution Water resources Manganese Bio-sand filter Fe
Content Type	Text
Resource Type	Article

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