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

Saturday, May 7, 2011

Dyson Does Greywater, Too

Dyson, of vacuum cleaner and other cool gadgetry fame, sponsors an annual design competition. The short version of what is at stake:

THE BRIEF: Design something that solves a problem.
THE PRIZE: £10,000 to you & £10,000 to your university.
THE DATE: Closes August 2, 2011.



It is just getting started for this year, but one can check out submissions from previous years. If Dyson sounds familiar beyond the vacuum cleaners to the RWC readers, perhaps you may recall the EULO sink, one of the past entries, this cool toilet, this shower-powered greywater diverter, among many other gadgets.

2010 was no different in terms of creative uses of greywater. Here are just a few entries:

K2 ECO Tank - Function K2 Eco Tank is a shower room with a grey water collection system from the shower and sink, which is then recycled to flush the toilet. This in some circumstances can use up to 15 liters of clean tap water.

HighDro Power - HighDro Power is a new micro generation technology that uses the power of falling wastewater in a high rise building’s soil pipe to generate electricity. This electricity can either be utilised in the building to save £926 per year for a 7 storey building or sold back to the national grid on a buy back tariff. If one linked this unit with the greywater energy recovery unit previously posted about here, then a greywater user could easily dodge the annual $50 tax fee imposed by the State of Oregon to reuse greywater that has already been paid for once through a homeowner's water bill.

REGNA - Rainwater Harvesting and Purification System - REGNA, a rainwater harvesting and purification system, which meets the demand for the collection, purification and storage of water from natural sources such as rain or snow. The system is used to harvest rainwater for both potable and non-potable uses. The RWC added this given Oklahoma's new greywater rules which permit *mixing* of greywater and harvested rainwater to create *Vespawater*.

The RWC idea for greywater reuse would not qualify for the Dyson award because it is not a gadget, but rather an idea. How about a national greywater reuse *vision* rather than the current state-by-state approach? This could be patterned after the incredibly visionary National Rainwater and Greywater Initiative that Australia has developed. The proceeds from such a US-based program could then be used to fund a US-based competition for greywater gadgetry.

But that approach would interfere with a state's right to develop tortured greywater reuse rules that are different from a neighboring state despite sharing the same watersheds. Hydroblasphemy.

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