I’ve been asked this question:

“We are very interested in installing an aerated system to treat our greywater for in-house use and would appreciate any advice on which supplier to use. So far Ozzi Kleen have been the most responsive to our enquiries.”

I consider at least two products for on site sewage projects:

Aqua Nova (aquanova.com…, and

Innoflow (www.innoflowtechnologies.com…)

The first is about half the cost of the second.  Both will do the job.

For reuse for clothes washing, toilet flushing and gardening I add a sand filter (sand in a tank) and an ultra violet lamp to the Aqua Nova.

I use a simple template for assessing the waste and some simple conditions to assist obtain a quick and affordable approval.

It won’t be long until someone applies the simple approvals option and so brings down the approvals cost and time and increases the rate of take up of the systems.  At the moment, however, if you’re a newcomer the folks selling these systems don’t generally have the expertise to obtain affordable approvals and it’s easy for the red tape to drive up approval and operating costs for newcomers seeking approvals.

The key thing to use here is a good knowledge of the law and how to use standards; a standard is just that – a rule of thumb which may be varied to suit the circumstances.  And sustainable water use produces much lower water use and waste than the standards typically allow for.

I could write much more on this but a blog is not the place for it.  There’s some more info in the second edition of my book and I’ll be putting up some fact sheets to go with the book when it’s out in October.

M