银川废水“再就业”，解城市缺水之困

Core Insights - Yinchuan City is implementing market-oriented reforms to address water resource challenges, showcasing a successful transformation of wastewater into reusable water [1][2] - The city has developed a multi-faceted approach to utilize reclaimed water across various sectors, significantly improving water resource efficiency [2][3] Group 1: Water Resource Management - Yinchuan is located in a drought-prone area with an average annual rainfall of less than 200mm and per capita usable water resources below half the national average [2] - The city has expanded its reclaimed water network to 315 kilometers, achieving an annual ecological replenishment of 70 million cubic meters and a reclaimed water utilization rate exceeding 58% [2] Group 2: Reclaimed Water Projects - Two reclaimed water projects, the second and fourth wastewater treatment plants, were completed and began operations in July 2024, providing nearly 50,000 cubic meters of treated water daily for ecological replenishment [2] - These projects can supply 26 million cubic meters of ecological water annually, replacing an equivalent amount of Yellow River water for industrial use, generating an annual added value of 4.5 billion yuan [2] Group 3: Water Rights Trading - In May, Yinchuan conducted a pioneering water rights transaction, allowing the exchange of Yellow River water for reclaimed water, marking a significant step in water rights reform [3] - The transaction involved three leading new materials companies purchasing 500,000 cubic meters of water at a price of 0.728 yuan per cubic meter, totaling 1.092 million yuan [3] - Yinchuan has completed 100 water rights transactions, totaling 695 million cubic meters and exceeding 714 million yuan in transaction value, positioning it as a leader in Ningxia [3]