title: Analysis of the relationship between economic growth and industrial pollution in Zaozhuang, China-based on the hypothesis of the environmental Kuznets curve.
abstract: In Zaozhuang, economic development affects the discharge amount of industrial wastewater, chemical oxygen demand (COD), and ammonia nitrogen (NH3-N). To reveal the trend of water environmental quality related to the economy in Zaozhuang, this paper simulated the relationships between industrial wastewater discharge, COD, NH3-N load, and gross domestic product (GDP) per capita for Zaozhuang (2002-2012) using environmental Kuznets curve (EKC) models. The results showed that the added value of industrial GDP, the per capita GDP, and wastewater emission had average annual growth rates of 16.62, 16.19, and 17.89 %, respectively, from 2002 to 2012, while COD and NH3-N emission in 2012, compared with 2002, showed average annual decreases of 10.70 and 31.12 %, respectively. The export of EKC models revealed that industrial wastewater discharge had a typical inverted-U-shaped relationship with per capita GDP. However, both COD and NH3-N showed the binding curve of the left side of the "U" curve and left side U-shaped curve. The economy in Zaozhuang had been at the "fast-growing" stage, with low environmental pollution according to the industrial pollution level. In recent years, Zaozhuang has abated these heavy-pollution industries emphatically, so pollutants have been greatly reduced. Thus, Zaozhuang industrial wastewater treatment has been quite effective, with water quality improved significantly. The EKC models provided scientific evidence for estimating industrial wastewater discharge, COD, and NH3-N load as well as their changeable trends for Zaozhuang from an economic perspective.
authors.affiliation: Shandong Normal University, Wenhuadong Rd 88, Lixia District, Ji'nan, 250014, Shandong, P. R. China.
authors.forename: Xiao-Hui
authors.initials: XH
authors.lastname: Liu
authors.affiliation: Shandong Normal University, Wenhuadong Rd 88, Lixia District, Ji'nan, 250014, Shandong, P. R. China. sunboyhood@163.com.
authors.forename: Wei-Liang
authors.initials: WL
authors.lastname: Wang
authors.affiliation: Dongtinghu Lake Ecological Observation and Research Station (DEORS), Chinese Research Academy of Environmental Sciences, 8#, Dayangfang, Anwai Street, Beijing, 100012, China. lushy2000@163.com.
authors.forename: Shao-Yong
authors.initials: SY
authors.lastname: Lu
authors.affiliation: Shandong Normal University, Wenhuadong Rd 88, Lixia District, Ji'nan, 250014, Shandong, P. R. China.
authors.forename: Yu-Fan
authors.initials: YF
authors.lastname: Wang
authors.affiliation: Shandong Normal University, Wenhuadong Rd 88, Lixia District, Ji'nan, 250014, Shandong, P. R. China.
authors.forename: Zongming
authors.initials: Z
authors.lastname: Ren
mesh_terms: D057919:Biological Oxygen Demand Analysis; D002681:China; D057217:Economic Development; D004777:Environment; D059066:Gross Domestic Product; D007220:Industrial Waste / Q000191:economics / Q000706:statistics & numerical data*; D007221:Industry / Q000191:economics / Q000706:statistics & numerical data*; D008962:Models, Theoretical; D062065:Wastewater / Q000032:analysis / Q000191:economics / Q000706:statistics & numerical data*; D014874:Water Pollutants, Chemical / Q000032:analysis; D060753:Water Quality
chemical_list: D007220:Industrial Waste; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: COD pollutant; Industrial wastewater discharge; NH3-N pollutant; Per capita GDP; Zaozhuang