Water utilities worldwide report a range of figures for NRW and losses because the figures are influenced by a variety of factors such as the age and condition of the pipes, supply pressures, efficiency of leak and waste prevention measures, how the unmetered demand is estimated and the ...
supply system based on correlation analysis and factor analysis from the perspective of the resilience of the water supply system. A multi-level comprehensive evaluation model based on a cloud model was established to simulate and analyze the resilience of the water supply system in Qingdao. The ma...
A technique for the modeling of time series has been presented and shown to be of a form suitable for on-line prediction of water demand but the method has also been found to be suitable for electricity demand prediction. A novel application of the Fletcher-Powerll variable metric algorithm ...
Using the super-efficiency Slacks-Based Measure (SBM) analysis method, the main agricultural pollution emissions (Chemical Oxygen Demand, ammonia nitrogen, and agricultural carbon emissions) were proposed as environmental constraints for the first time. The threshold regression model was used to measure ...
1.7Unforeseen demand: 10%23.41.811.94 Total256.820.021.4 2Domestic water 2.1421.754.38300people/day 2.2Subtotal421.754.38 2.3Unforeseen demand: 10%4.20.180.44 Total46.21.934.82 3Firewater 3.1Outdoor1447272Once, 2h 3.2Indoor1085454Once, 2h Total252126126 ...
In this paper the eco-environmental water demand on the basis of the concept,being divided into atmospheric eco-environment water requirement、surface eco-environment water requirement and underground eco-environment water requirement,and based on the classification of refinement;the concept of atmospheric...
ENgetdemandmodel Retrieves the type of demand model in use and its parameters ENgetdemandname Retrieves the name of a node's demand category ENgetdemandpattern Retrieves the index of a time pattern assigned to one of a node's demand categories ENgetelseaction Gets the properties of an ELSE...
To meet up the increasing water demand, the use of groundwater is increasing day by day globally. However, various heavy or non-heavy metal with their carbonate, salinity, arsenic, magnesium hazard has been mainly responsible for the contamination of groundwater and the concern has been raised ...
supply and to keep many key terrestrial ecosystems alive3. In many parts of the world, excess water exploration due to increasing water demand has threatened their long-term viability4,5. The encroachment of seawater into coastal aquifers and the removal of water from coastal aquifers have caused...
The measured water quality indexes include total nitrogen (TN), total phosphorus (TP), ammonia nitrogen (NH4+-N), nitrate nitrogen (NO3–-N) and chemical oxygen demand (COD) (Ding, 2019). Due to the agricultural basin of Danjiangkou reservoir is dominated by planting, the nutrient input ...