1Department of Animal Husbandry Engineering, Zhengzhou College of Animal Husbandry Engineering, Zhengzhou 450011, P.R. China
2College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P.R. China
3Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, P.R. China
4Shandong Provincial Key Laboratory of Water and Soil Conservation & Environmental Protection, Linyi University, Linyi 276005, P.R. China
*Corresponding author: Tel/Fax: +86 576 83647467; E-mail: zyjun2007@163.com; squirrel81@126.com
Z.G. Ge2
1Department of Animal Husbandry Engineering, Zhengzhou College of Animal Husbandry Engineering, Zhengzhou 450011, P.R. China
2College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P.R. China
3Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, P.R. China
4Shandong Provincial Key Laboratory of Water and Soil Conservation & Environmental Protection, Linyi University, Linyi 276005, P.R. China
*Corresponding author: Tel/Fax: +86 576 83647467; E-mail: zyjun2007@163.com; squirrel81@126.com
Y.J. Zhao2
1Department of Animal Husbandry Engineering, Zhengzhou College of Animal Husbandry Engineering, Zhengzhou 450011, P.R. China
2College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P.R. China
3Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, P.R. China
4Shandong Provincial Key Laboratory of Water and Soil Conservation & Environmental Protection, Linyi University, Linyi 276005, P.R. China
*Corresponding author: Tel/Fax: +86 576 83647467; E-mail: zyjun2007@163.com; squirrel81@126.com
C. Yan3
1Department of Animal Husbandry Engineering, Zhengzhou College of Animal Husbandry Engineering, Zhengzhou 450011, P.R. China
2College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P.R. China
3Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, P.R. China
4Shandong Provincial Key Laboratory of Water and Soil Conservation & Environmental Protection, Linyi University, Linyi 276005, P.R. China
*Corresponding author: Tel/Fax: +86 576 83647467; E-mail: zyjun2007@163.com; squirrel81@126.com
C.W. Hu4
1Department of Animal Husbandry Engineering, Zhengzhou College of Animal Husbandry Engineering, Zhengzhou 450011, P.R. China
2College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, P.R. China
3Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, P.R. China
4Shandong Provincial Key Laboratory of Water and Soil Conservation & Environmental Protection, Linyi University, Linyi 276005, P.R. China
*Corresponding author: Tel/Fax: +86 576 83647467; E-mail: zyjun2007@163.com; squirrel81@126.com
Agricultural wastewater pollution has attracted increasing interest over the past decades owing to its significant effects on water quality. The agricultural wastewater coming from chemical fertilizers is a typical high-strength wastewater. The earthworm eco-filter is a potentially useful method for chemical fertilizer wastewater treatment. The performance and temporal variation of four different kinds of earthworm eco-filter systems in response to high carbon and high nitrogen loadings were analyzed in this research. The four kinds of earthworm eco-filter systems all exhibited high nutrient removal efficiencies under various high-strength loading treatments and the optimum earthworm eco-filter system was the earthworm eco-filter system with earthworms and plants. Relatively higher nutrient removal efficiency was achieved in summer (July, August and September) after increasing in spring (March, April and June). However, it decreased quickly during autumn (October and November) and winter (December and January). The best removal effect was obtained in August. The removal efficiencies of chemical oxygen demand, total nitrogen and total phosphorus were only significantly affected (p < 0.05) by season, system variation and their combined effects.
Keywords
High carbon loadingHigh nitrogen loadingCOD removalTotal nitrogen removalTotal phosphorus removal.
Full Article
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Cheng1, P., Ge2, Z., Zhao2, Y., Yan3, C., & Hu4, C. (2013). Performance of Purifying Synthetic High-Strength Chemical Fertilizer Wastewater by Earthworm Eco-Filter System. Asian Journal of Chemistry, 25(18), 10050–10056. https://doi.org/10.14233/ajchem.2013.15134
