A study of minimum industrial water-demand-quota based on data envelope analysis

Minimum industrial water-demand-quota is the fundamental research for the management of water use quota.In this paper,the definition of minimum industrial water-demand-quota is illustrated and the four basic principles are put forward,which include the following three aspects:(1)Adjusting measures to local conditions;(2)Establishing advanced and reasonable minimum water-demand-quota;(3)Adjusting the minimum industrial water-demand-quota dynamically.Afterwards,the method of data envelope analysis is employed to determine the least water consumption for every unit of production value that can reflect the rating water quantity of a certain industry at a certain water utilization level.Finally,a case study is made on the textile industry of Shanghai in the year 2004.The analysis results show that the model of data envelope analysis can indicate the quantity relationship between the least consumption of water and the output production value.Furthermore,it can determine the theoretical water amount per unit output value of industry at a certain water utilization level when external factors are all optimal.