alexa The Treatment of Shenzhen Coastal Polluted Water by Composites of Bio- Flocculants -Bacteria-Algae
ISSN: 2168-9652

Biochemistry & Physiology: Open Access
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Research Article

The Treatment of Shenzhen Coastal Polluted Water by Composites of Bio- Flocculants -Bacteria-Algae

ZHANG Rui1,2,3*, YANG Xiao-Mao3, LU Li-Bin3, LiSi Dong2, ZHAO Zheng-ye3 and LI Gui-Feng1
1State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen (Zhongshan) University, 135 Xingang West Road, Guangzhou, 510275, People’s Republic of China
2Center for Morden biochemistry, Guangdong Ocean University, Shenzhen, Guangdong, 524088, People’s Republic of China
3Shenzhen Key Laboratory for Coastal and Atmospheric Research Organization PKU-HKUST Shenzhen- Hong Kong Institution, Shenzhen, Guangdong, 518057, People’s Republic of China
*Corresponding Author : Zhang Rui
State Key Laboratory for Biocontrol
School of Life Sciences
Sun Yat-Sen (Zhongshan) University
135 Xingang wester Road West
Guangzhou, 510275, People’s Republic of China
Tel: 020-84113792
E-mail: [email protected]
Received August 24, 2013; Accepted November 06, 2013; Published November 11, 2013
Citation: Rui Z, Xiao-Mao Y, Li-BinLU, Dong L, Zheng-ye Z, et al. (2013) The Treatment of Shenzhen Coastal Polluted Water by Composites of Bio-Flocculants -Bacteria-Algae. Biochem Physiol 2:120. doi:10.4172/2168-9652.1000120
Copyright: © 2013 Rui Z, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


The polluted coastal water of Shenzhen Bay was treated with composites of active materials, bacteria and algae as well as combinations of two or three of these composites. The water quality was then examined after 10 days with a focus on 8 parameters, including dissolved oxygen (DO), suspended substances (SS), turbidity (Turbidity), ammonia nitrogen (NH4+-N), total nitrogen (TN), total phosphorus (TP), chemical oxygen demand (COD) and harmful marine vibrio. The results showed that the water quality was dramatically improved and the levels of harmful marine vibrio were significantly reduced after the treatment with the combination of active materials, bacteria and algae. The three composites can improve the rate of DO by 89.08% and had the highest removal rates of NH4+- N, TN, TP, COD and harmful marine vibrio (HMV), at 92.59%, 94.05%, 90.05%, 94.12% and 98.21%, respectively. However, the removal rates of SS and turbidity were the highest for the treatment with active materials compound with bacteria, at 95% and 92.69%, respectively. The combination of the three composites clearly had the best treatment effect for the restoration of polluted coastal waters. This study established solid theoretical and practical foundations to control coastal pollution and restore the coastal ecology.


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