A non-partisan, neutral perspective supporting diversity in the color of water

Friday, January 4, 2013

Rational Sizing of Greywater Systems

Another great greywater thesis, this time focusing on the rational discourse on the Rational sizing of greywater systems. 

Congratulations Laurent Mangata Ramsamy (2012) for your MSc dissertation at the University of Portsmouth.


Greywater systems are becoming more and more important as an alternative to main water due to the decreasing water resources. It is known that a third of main water demand can be substituted by the reuse of greywater. Most of actual greywater systems can reach this percentage of saving depending on the greywater sources available and the expected use. It has been determined that the more the water source matches to a specific demand, the more the system is efficient and worthy through its life expectancy considering both quantity and quality aspect of the water. It means that the efficiency of such systems is linked to a good sizing of greywater storage. But it has also been determined that the efficiency of a system depends on usage patterns and behaviour of people concerning water appliances, which lead to a randomness use of the water. This paper uses previous studies, works and papers to identify gaps on sizing of greywater systems, proposes a new model based on the flow rate rather than the volume in the previous studies in order to match the demand and the supply in a more realistic and reliable way. This report explains how the flow rate system has been developed on Excel, presents the results coming from this model and compares it to previous studies. The conclusion includes also recommendations for future changes in the program in order to improve it.

It is unfortunate that one needs to logon to a website at the University of Portsmouth download the thesis.
* * *
You'll find a way in, Jack. That's why we chose you. 
~Firewall (2006)

1 comment:

  1. Such an important post.The average four man household sends well more than 38,000 gallons of reusable dilute the drain every year from bathrooms and laundries.With a greywater framework,you can occupy this avaricious measure of water into the garden rather than down the drain -ensuring our watershed,diminishing water utilization,bringing down your monthly bill, and alleviating some stress on water treatment plant.Thank you.

    Sue Houston.