Abstract
Based on the data analysis of the water environmental quality and economic development from 2002 to 2012 in the Nansi Lake basin, the correlation and change between the water environmental quality and economic development were studied. Results showed that the GDP and wastewater emissions of point source in the Nansi Lake basin had an average annual growth of 7.30 and 7.68 %, respectively, from 2002 to 2012. The emissions of chemical oxygen demand (COD) and ammonia nitrogen (NH3-N) had the average annual decrease of 7.69 and 6.79 % in 2012, respectively, compared to 2002. Basin water quality overall improved, reaching the Class III of the “Environmental quality standards for surface water (GB3838-2002),” in which the main reason was that sewage treatment rate increased gradually and was above 90 % in 2012 (an increase of 10 % compared to 2002) with the progress of pollution abatement technology and the implementation of relevant policies and regulations. The contribution of water environmental pollution was analyzed from related cities (Ji’ning, Zaozhuang, Heze). Results indicated that Ji’ning had the largest contribution to water pollution of the Nansi Lake basin, and the pollutant from domestic sources accounted for a higher percentage compared to industrial sources. The wastewater, COD, and NH3-N mainly came from mining and washing of coal, manufacture of raw chemical materials and chemical products, papermaking industry, and food processing industry. According to the water pollution characteristics of the Nansi Lake basin, the basin pollution treatment strategy and prevention and treatment system were dissected to provide a scientific basis for prevention and control of lakeside point source pollution along the Nansi Lake.
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The authors would like to thank Jameson Kwan for polishing the English of the manuscript. This work was financially supported by the Project of Shandong Province Environmental Protection Bureau (No. SDHBPJ-ZB-09) and China National Key Program for Water Pollution Control (No. 2009ZX07210-007) (2015FY110900).
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Responsible editor: Philippe Garrigues
Weiliang Wang and Xiaohui Liu contributed equally to this work and should be regarded as co-first authors.
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Wang, W., Liu, X., Wang, Y. et al. Analysis of point source pollution and water environmental quality variation trends in the Nansi Lake basin from 2002 to 2012. Environ Sci Pollut Res 23, 4886–4897 (2016). https://doi.org/10.1007/s11356-015-5625-x
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DOI: https://doi.org/10.1007/s11356-015-5625-x