Navigation Links
GROWing the next generation of water recycling plants

A vegetated rooftop recycling system has been developed that allows water to be used twice before it is flushed into the communal waste water system.

The Green Roof Water Recycling System (GROW) uses semi-aquatic plants to treat waste washing water, which can then be reused for activities such as flushing the toilet.

GROW is the brainchild of Chris Shirley-Smith, whose company Water Works UK is collaborating with Imperial College London and Cranfield University. The researchers are funded by the Engineering and Physical Sciences Research Council.

So-called grey water from washbasins, baths and showers is pumped up to the GROW system, which is constructed on the roof of an office or housing block. It consists of an inclined framework of interconnected horizontal troughs. Planted in these troughs are rows of specially chosen plants that gently cleanse the grey water. Trickling through the GROW framework, the plants' roots naturally take up the dissolved pollutants, leaving 'green water'. Green water is not drinkable and will be dyed with a vegetable colour to signify this, but it can be used to flush toilets or water the garden.

More than half the water used in the home and workplace does not need to be of drinkable quality yet it comes from the same pure source as our kitchen taps. Using GROW, much of the water that enters a building can be used twice before being placed into the national wastewater management system.

"We had to carefully choose which semi-aquatic plants to use. One of the most successful is water mint, whose roots have disinfectant qualities," says Professor David Butler, who oversees the project at Imperial College. The other plant species include the yellow flag iris, marsh marigold, and the common reed. They are chosen to be resistant to the pollutants they absorb. By planting more than one species, the engineers guard against an unusually dirty batch of water exceeding a particular species' tolerance level . Should one species die off, there will still be others there to continue the job until the dead plants can be replaced.

The beauty of the system is that it is not 'high-tech' in the traditional sense. "It does not require sophisticated maintenance, just tending, like any garden," says Butler.

The next aim for GROW is to see if it can be reduced in size to sit above a household water butt, making it serviceable for individual households. The team will also investigate whether the addition of an ultraviolet light can enhance the disinfection of the water. They hope to market GROW commercially in the second half of 2006.

GROW is one project in a much larger EPSRC-funded Sustainable Water Management programme (WaND) that Professor Butler oversees at Imperial. "Our overall aim is to contribute towards sustainable water management in new developments. We hope that GROW will be one of the tools that can help us achieve that goal," says Butler.


'"/>

Source:Engineering and Physical Sciences Research Council


Related biology news :

1. LUCA technologies confirms real-time methane generation
2. New component of the brakes on nerve regeneration found
3. 15 generations of untrained jocks, couch potatoes show big physiological adaptations
4. Researchers feed tiny pills of RNA to planarians to identify genes essential for regeneration
5. Tissue regeneration operates differently than expected
6. New understanding of regeneration gained by Forsyth scientists
7. New compound stops brain cell degeneration in Alzheimers disease
8. New gene reduces retinal degeneration in fruit flies
9. Chimpanzees can transmit cultural behavior to multiple generations
10. Protein-coated dental implants could improve bone regeneration
11. Salk and Stanford teams join forces to reveal two paths of neurodegeneration
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/4/2017)... NEW YORK , April 4, 2017   ... solutions, today announced that the United States Patent and ... The patent broadly covers the linking of an iris ... the same transaction) and represents the company,s 45 th ... our latest patent is very timely given the multi-modal ...
(Date:3/30/2017)... LOS ANGELES , March 30, 2017  On ... Hack the Genome hackathon at ... This exciting two-day competition will focus on developing health ... experience. Hack the Genome is ... has been tremendous. The world,s largest companies in the ...
(Date:3/30/2017)... 30, 2017 Trends, opportunities and forecast in ... by technology (fingerprint, AFIS, iris recognition, facial recognition, hand ... by end use industry (government and law enforcement, commercial ... banking, and others), and by region ( North ... Asia Pacific , and the Rest of ...
Breaking Biology News(10 mins):
(Date:9/20/2017)... (PRWEB) , ... September 20, ... ... (IPS), a leading global provider of engineering, architecture, project controls, construction management, ... prefabricated cleanrooms, today announced the unveiling of the iCON™ brand which represents ...
(Date:9/20/2017)... , ... September 20, 2017 ... ... published findings of a study examining the effects of exoskeleton-assisted walking on ... cord injury (SCI). The article, "Neuromechanical adaptations during a robotic powered exoskeleton ...
(Date:9/20/2017)... ... September 20, 2017 , ... ... molecular manufacturing and other transformative technologies, announced the winners for the 2017 Foresight ... other for Theory in nanotechnology/molecular manufacturing. , Established in 1993 and named in ...
(Date:9/19/2017)... ... 19, 2017 , ... The latest generation of the AutoBlock, ... prep for metals digestion—the addition of acids and reagents. The accessory fits any ... is ideal for any laboratory performing their own unique metals digestion method. ...
Breaking Biology Technology: