Water cascade analysis is a technique to calculate the minimum flowrate target for feedwater and wastewater

Wastewater

Wastewater is any water that has been adversely affected in quality by anthropogenic influence. It comprises liquid waste discharged by domestic residences, commercial properties, industry, and/or agriculture and can encompass a wide range of potential contaminants and concentrations...

 for continuous water-using processes.

Principle

It is a tabular and numerical alternative to the water surplus diagram in Water Pinch which can be used to identify opportunities for reduction in feedwater usage and the design of water distribution networks. The WCA is done in three steps, a global analysis of water distribution and consumption in the network, establishing baseline minimum water

Water

Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state . Water also exists in a...

 targets and redesign of the water network to achieve these targets.

History

WCA was first introduced by Manan, foo and Tan in 2004. Since then, it has been widely used as a tool for water conservation in industrial process plants. A Time dependent water cascade analysis was presented later on. A variation of the WCA is the gas cascade analysis (GCA).

See also

• Cost effective minimum water network
  Cost effective minimum water network
  Cost effective minimum water network is a holistic framework for water conservation which considers all conceivable methods to save water based on the water management hierarchy....
  
  
• Water management hierarchy
  Water management hierarchy
  Water Management Hierarchy is a hierarchy of water conservation priorities. Levels of the hierarchy from the highest to the lowest in terms of the priority for water conservation include elimination, reduction, outsourcing/reuse and regeneration. The most preferred option is elimination,...
  
  
• Reclaimed water
  Reclaimed water
  Reclaimed water or recycled water, is former wastewater that is treated to remove solids and certain impurities, and used in sustainable landscaping irrigation or to recharge groundwater aquifers...