A key issue in water resources management in China is the adoption of a total volume control framework of water supply at a regional level corresponding to socioeconomic development. This requires more efficient water demand management in order to achieve a balance between water supply and demand. The purpose of this paper is to conduct a thorough analysis of the water use structure of production sectors in order to identify the major impact factors and thus provide insights for demand management policy design. Taking Jiangsu Province as a case study, we compile a series of extended input-output (I-O) tables at a constant price and establish an I-O structural decomposition model. The major factors leading to change in water use by production sectors (primary, secondary and tertiary) in the Jiangsu Province during five time periods from 1997–2010 are categorized into structure effect, water use efficiency effect, and demand effect for each of three levels: (1) aggregated sectors, (2) sub-aggregated sectors, and (3) individual sectors. Within the study period, the demand effect consistently leads to an increase in water utilization and the increase effect becomes weaker over time, while the other two factors consistently lead to a decrease in water utilization and their dampening effect becomes stronger.
Removing VOCs from Municipal Water Supply - Case Study
QED E-Z Tray® Air Strippers Removing Volatile Compounds in Cheyenne’s Drinking Water The U.S. Army Corps of Engineers (USACE) – Omaha District has funded the design and construction of a new groundwater treatment plant in Cheyenne, Wyoming to treat groundwater from the city’s Borie well field. This important groundwater supply was apparently contaminated with tricholorethene (TCE) in the late 1960s at the Former F.E. Warren Atlas Missile Site 4, several miles southwest and up-gradient of...
Treating drinking water with 99% removal - Case Study
QED E-Z Tray®Air Stripper Treating Drinking Water with 99% Removal in Cedarburg, Wisconsin In October 2011, the Cedarburg, Wisconsin Light and Water Utility installed a QED E-Z Tray® (U.S. Patent Number 5,518,668) Air Stripper in a discreet addition to their existing production pump building. The E-Z Tray 72.6 handles a flow rate of 600 gpm and treats groundwater containing vinyl chloride that has been traced back to a nearby landfill. The influent into the Air Stripper is drinking water with 0.22...
How risk assessments can make a city more resilient to weather extremes
Balancing water supply and demand—while addressing current and future vulnerabilities to extreme conditions such as drought—is essential to safeguarding the wellbeing of our communities. Is your city at risk? Identifying where cities have problems and determining how much is at risk is the first step to becoming a strong, resilient city. In states like California, water shortage is hardly a temporary problem, but there are very serious consequences that put local and state economies at risk. For...
World Bank: groundwater management specialist
The World Bank is currently looking for a senior water resources specialist specializing in groundwater management to join the South Asia water team. The World Bank’s regional portfolio is in South Asia comprises over $5 billion of lending, of which around half is for water supply and sanitation and half for water resource and irrigation projects and a strong focus in India. These projects span irrigation, major dams, river restoration, IWRM and river basin planning, water resources monitoring, modelling...
Senix Water Level Sensors Drive Irrigation Automation Project
Australia’s Water Crisis Irrigation management is serious business in Australia especially within the Murray-Darling Basin, a 1,000,000 square kilometer watershed that is home to Australia’s most productive agricultural land. The basin’s 23 rivers have some of the lowest and most variable flows in theworld. A massive system of dams, lakes and canals stores water from mountain snowmelt and seasonal rains and distributes it to farms and communities throughout the growing season. The Murray-Dar...