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TVNI has been informed by the Chaipattana Foundation ­– the ICV7 organizer and host in Thailand -- that due to the COVID-19 pandemic ICV-7 will be postponed until 2021. The specific dates are, as yet, under consideration. They will be announced soon, as will the new deadlines for the King of Thailand Awards.

Vetiver System - A Solution for Urban Waste Water Treatment

Wednesday, April 16, 2014

In most cities, towns, and villages in developing countries there is no connection to a public sewage/waste water treatment.  Where there is a connection the effluent is often discharged without treatment to near by rivers. Where there is no sewage system some properties may have septic tanks, and the majority of these leak and mis-function.  The result is that water tables, water bodies, and the local environment are polluted with consequential increases in foul smelling air, undrinkable water, and increased water borne diseases.  One such an example, described in a World Bank report on Indonesia describes the city of Palembang, South Sumatra, with a population of over a million having no direct sewage connections, and 70% of the households having septic tanks, of which 30% mis-function.

Correcting this situation with conventional costly technologies for Palembang, and tens of thousands of other urban centers in the tropics will be prohibitive and will take decades. It is essential to start installing low cost, flexible, and sustainable remedies, that might not be perfect, but are able to reduce the problems significantly.

The Vetiver Phytoremedial Technology (VPT) as developed by Paul Truong is one such solution.  It works, it is scalable, and can be installed in many cases by the user.  Planting vetiver around a septic tank would reduce much of the effluent and leakage; planting a vetiver hedge around the boundary of an urban garden would reduce rainfall runoff and the contaminates that it carries; planting vetiver around a miniscule urban lot would do the same, and might provide some privacy too!; and planting vetiver along the banks of urban drains would help remove contaminates and reduce the high levels of nitrates and phosphates that enter the drainage system from urban runoff. These are just a few of the benefits. 

Alois Kennerknecht of Peru has shown us how one man can change the thinking of residents of part of Lima (30 mm rainfall/year!) and is in the process of re-greening the area with vetiver. If you look at his photos you will see that, apart from re-greening, vetiver reduces erosion, reduces dust, reduces waste water flows (photos 59 to 65 show specific urban household waste water treatment applications), and provides forage and material for composting. A similar approach and more could be used for urban waste water management. In any such an approach the stakeholders (the city/block residents) have to be involved - they have to want to live in a cleaner environment - most of them do!  It has to be a bottom up driven process.  Of course local governments should help.

Here is an opportunity for urban "green" activists to get involved, here is something that is achievable.  Here is an opportunity for "Conservation Marketing" that I have been writing about - an opportunity for small entrepreneurs to start a business to install VPT on urban properties, and an opportunity for farmers in adjacent farming areas to provide quality plant material.  Everybody benefits, the city dweller, the vetiver supplier, the installer, and the city government.

Its all about "vision" and involving those impacted with this growing problem of managing urban waste.  More on VPT can be found on our website.

Dick Grimshaw


A.T.E. provides complete effluent treatment solutions to address the needs for waste water treatment and recycle of wastewater for various industrial applications.
Waste Water Treatment

by. Unknown

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by. Anonymous

This is very good information a really nice blog. keep it up!!!

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by. Kevin Hakney

who can I contact about Vetiver in Tanzania?

by. HarryTulu

Nice Post.
Thank you for your information.
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by. Water Chemical Solution

Thanks for sharing such a good post, just keep it up

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by. Unknown


Good Content and information for new Digital India,

Ion India Limited is also a Public Sector Company, offers conventional to highly technology oriented water treatment solutions for the industrial and municipal markets plant.

by. Unknown

This post will be very useful to us....i like your blog and helpful to me....nice thoughts for your great work.

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Your blog is very nice and informative. I really appreciate your idea of sharing this information. This post contains all useful contents. Thanks for sharing.

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by. adley marie

This way of wastewater treatment is awesome but on the other hand industrial wastewater treatment is way more beneficial than this. To make this process more easy there are so many tools and equipment like Paddle Wheel Flow Meter , Chemical Level Sensors and much more.

by. Unknown

Nice work. Keep sharing.

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