Analysis And Prediction Of Industrial Water Footprint Of Chongqing

The analysis of industrial water footprint(IWF)can reveal the utilization of water resources and the degree of pressure on water resources,which is helpful to the efficient management and utilization of industrial water resources.This paper takes Chongqing water industry as the research object,the trade and industry water footprint space-time evolution process and influencing factors are analyzed,and selected the Chongqing Baer hotel cleaning supplies washing project as a case,the quantitative accounting of the blue water footprint and grey water footprint,in order to provide theoretical basis and foundation for water management in Chongqing city and the development of water-saving development planning.The main contents and results of this study are as follows:(1)calculate the industrial water footprint,industrial trade water footprint the balance of industrial trade.water footprint in Chongqing.According to the calculation method of Arjen Y.Hoekstra,the accounting results show that Chongqing city industrial water footprint from 2.86 × 109m3 in 2004 down to 2.12 × 109 m3 in 2015,it shows that the utilization of industrial water resources in Chongqing is developing in a positive direction;Chongqing city industrial water footprint and trade balance value showed an upward trend.The water footprint of industrial trade rose from 7.31 × 108m3 in 2004 to 2.26 × 109m3 in 2015.The balance of industrial trade water footprint increased from 1.02 × 108m3 in 2004 to 1.15 × 109m3 in 2015.It shows that Chongqing’s industrial trade is prosperous,and it is a city with industrial products and virtual water exports.accounting for industrial products trade district industrial water footprint and water footprint of the trade,the results show that,Chongqing’s industrial water footprint and trade balance value showed an upward trend,the trade and industry water footprint from 2004 to 2015 increased by 7.31 x 108m3 2.26 x 109 m3,trade and Industry water footprint balance value rise from 2004 to 2015 of 1.02 × 108m3 1.15 × 109m3.The results show that Chongqing’s industrial trade prosperity,is an industrial product virtual water export city.(2)the spatial and temporal evolution and characteristics of the industrial trade water footprint in Chongqing are analyzed.Through the analysis of the trend of the 17 categories of industrial products M-K,found that the M-K value was 3.36 from 2004 to 2015,increasing significantly;the same time,the proportion of industrial products trade between the water footprint of a huge difference(2015 machine the largest proportion is 64.51%,and the types of weapons and ammunition accounted for less than 1%).Analysis shows that Arcgis and Mapinfo space based on the city of Chongqing one hour economic circle,northeast of Chongqing,Chongqing trade industrial water footprint distribution is not uniform,mainly concentrated in the one hour economic circle(2011-2015,occupy than one hour economy maintained in 98%);among them,the main city,Wanzhou district and Youyang County Industrial Water Footprint trade aggregation degree is obvious.In addition,the Gini coefficient of Chongqing industrial trade water footprint was 0.85,it is above 0.5(in 2015 as an example),indicating a high degree of imbalance between regional and regional memory.(3)based on the ridge regression equation of STIRPAT model,the main driving factors of water footprint of industrial trade in Chongqing are analyzed,and relevant forecasting models are establishedBased on SPSS software,the STIRPAT model about population(P),affluence(A)and technical level(T)is established,and the reduction of energy consumption per unit GDP by ridge regression equation has the greatest impact on Industrial Trade water footprint.Through the establishment of 7 forecasting models,we can see that the industrial and trade water footprint of Chongqing will maintain steady growth.(4)the blue water footprint and grey water footprint.This paper takes Chongqing Baer hotel supplies washing project as an example to evaluate the sustainability of water footprint.Through the chain sum method,calculate the blue water footprint Baer clean hotel supplies washing project is 1399.86 m3/a,the gray water footprint is 1386.28m3/a,pre wash,wash,rinse,the water consumption of dehydration process is the largest,9900m3/a,the production process of the blue water footprint is 1350.36m3/a;the blue water and ash enterprise evaluation the water footprint,found a blue water shortage degree of enterprises was 0.549%,less ash water pollution degree 0.1%,indicating that the effect on water environment is very small,so the sustainability of high water mode of the enterprise.