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The optimal tax rate of COD and ammonia nitrogen was estimated based on the estimated economic loss caused by domestic sewage and the determined tax base in Binzhou City, The results show that due to the pollution of COD and ammonia nitrogen, the average economic loss of domestic sewage in Binzhou City from 2010 to 2017 was 167.292 million and 178.040 million yuan respectively. The average pollution equivalent amount of COD and ammonia nitrogen in domestic sewage in Binzhou City was43 435 and 3 900 t respectively, and the average optimal tax rate of COD and ammonia nitrogen was 3,85 and 45,65 yuan/kg respectively. That is, residents should pay a pollution tax of 3.85 yuan for every 1 kg of COD discharged and a pollution tax of 45,65 yuan for every 1 kg of ammonia nitrogen discharged. [ABSTRACT FROM AUTHOR]

Relationships between environmental pollution and economic development in Binzhou during 2001-2013 were studied through an Environmental Kuznets Curve (EKC). The results showed that with the increase of GDP per capita, the emissions of industrial wastewater, COD and ammonia nitrogen in Binzhou City increased at first and then decreased during 2001-2013, showing inverted-U-shaped curves where turning points appeared in the middle; the emission of domestic sewage showed an upward trend, and a turning point would not appear in a short term; the emissions of domestic COD and ammonia nitrogen dropped firstly and then rose gradually, showing U-shaped curves, and they would not decrease in a short time. The turning points of industrial wastewater, COD and ammonia were at (4.29,14 550), (2.46, 44 803) and (2.27, 2 708) respectively; domestic sewage had no turning point, and domestic COD and ammonia nitrogen would not reach the turning points in a short term. [ABSTRACT FROM AUTHOR]

Through PRB simulated device and orthogonal test, we discussed the treatment effect of groundwater polluted by landfiil leachate with three reaction mediums of zero-valent iron powder, activated carbon and zeolite. We considered four factors of iron powder mass, activated carbon mass, particle size of iron powder and zeolite mass, and designed a two-level orthogonal test. It concluded that effluent pH appeared to fall or rise as the reaction proceeded, which changed during 7 - 8 . The removal rates of CODCr in eight reactors were during 60.7% - 7 8 . 3%, and the removal rates of NH3-N were during 34.0% -58.8%. Activated carbon mass and the interaction of iron powder mass and activated carbon mass had significant influences on the removal of CODCr, while iron powder mass, particle size of iron powder and zeolite mass had insignificant influences on the removal of CODCr. Zeolite mass and activated carbon mass had significant influences on the removal of NH3, while iron powder mass, particle size of iron powder and the interaction with activated carbon mass had insignificant influences on the removal of NH3-N. [ABSTRACT FROM AUTHOR]

Sustainable utilization state of wafer resource in Binzhou City was studied by ecological footprint. Results showed that the per capita ecological footprints of living wafer, producing wafer and ecological wafer were respectively 0.071, 1.105 and 0.032 hm2/person. The total per capita ecological footprint was 1. 208 hm2/person, and the total per capita ecological carrying capacity was 1. 357 hm2/person. The per capita ecological surplus of wafer resource was 0.149 8 hm2/person. If illustrated that the development and utilization of wafer resource in Binzhou City were overall sustainable. [ABSTRACT FROM AUTHOR]