Study on Biological Denitrification Removal Technologies Treating Eutrophication Water
In this paper, efficient bacteria including photosynthetic bacteria, nitrifying bacteria, compound bacteria, etc., were applied to degrade pollutants of the urban lakes. The results showed that the removal rates of organic substances, chlorophyll-a and ni
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Study on Biological Denitrification Removal Technologies Treating Eutrophication Water Zongzheng Yang, Huan Zhang, Deqiang Zhang and Jinzhao Pang
Abstract In this paper, efficient bacteria including photosynthetic bacteria, nitrifying bacteria, compound bacteria, etc., were applied to degrade pollutants of the urban lakes. The results showed that the removal rates of organic substances, chlorophyll-a and nitrogen compounds were 60, 90, and 50 %, respectively. Moreover, dissolved oxygen (DO) content increased from 1 to 7 mg/L and pH value remained at about eight by adding microbes. The conclusion can be drawn that it is a feasible method for adding microbes into eutrophication water for its decontamination. Keywords Efficient bacteria Bioaugmentation
Eutrophication
Sewage decontamination
132.1 Introduction The urban landscape water is mostly static or closed and the fluidity of the water is poor. Some of them even appear in different degrees of eutrophication, which seriously affects the surrounding natural and living environment, and then the
Z. Yang (&) J. Pang Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, Tianjin 300457, People’s Republic of China e-mail: [email protected] H. Zhang College of Marine Science and Engineering, Tianjin University of and Technology, Tianjin 300457, People’s Republic of China D. Zhang Tianjin Qing Shuo Environmental Protection Engineering Co., Ltd, Tianjin 300451, People’s Republic of China
T.-C. Zhang et al. (eds.), Proceedings of the 2012 International Conference on Applied Biotechnology (ICAB 2012), Lecture Notes in Electrical Engineering 250, DOI: 10.1007/978-3-642-37922-2_132, Ó Springer-Verlag Berlin Heidelberg 2014
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Table 132.1 The quality of the original water pH Turbidity NH4+-N (NTU) (mg/L)
CODMn (mg/L)
DO (mg/L)
Chlorophyll-a (mg/m3)
7.7–8.1
13–17
0.8–1.5
118–130
55–65
0.7–1
function of the landscape water is lost [1]. So it is of significance to study the eutrophication water and protect water environment. Now, the controlling methods of the landscape water eutrophication include physical, chemical, biological methods, and ecological restoration and the treatments have achieved good results. Zhang et al. used the diving aerating method to remediate the urban landscape water [2]. Yuan et al. used the coagulant which contained aluminum sulfate (Al2(SO4)318H2O) and ferric chloride (FeCl36H2O) to remove the algae and phosphorus of the eutrophication landscape water [3]. Domaizon and Devaux researched the different densities of silver carps to remove the algae [4]. Joebgen et al. used biological floating island to repair the eutrophication water [5]. In this paper, the bioaugmentation technology was used to control the growth of the algae of the water, to inhibit the growth of the algae by the biodegradation of organic pollutants of the water, to prevent the occurrence of water bloom, and to improve the quality of the landscape water. The removal rate of the organic substances was sig
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