From: stuart mather <[email protected]>
To: [email protected]
Sent: Sunday, 3 February 2013 9:52 PM
Subject: Re: mycoremediation of tarry water
Thanks Doug,
So maybe Kevin's gasifier correspondent was just missing the point by claiming
that 'vegetation grew as well arounf the tar pond as anywhere else. It was
still a toxic nightmare -just a lush green toxic nightmare.
Tom, if you're reading this, any chance of explaining what you meant by saying
that one option was to just generate clean gas without tars. I thought Biomass
gasification always produces tars in the gas, Which tnen have to be filtered
out somehow.
Stuart.
________________________________
From: doug.williams <[email protected]>
To: stuart mather <[email protected]>; Discussion of biomass pyrolysis
and gasification <[email protected]>; Kevin C
<[email protected]>
Sent: Sunday, 3 February 2013 2:52 PM
Subject: Re: mycoremediation of tarry water
Hi Stuart,
In reply to Kevin you
ask:
So I wonder why there seems to be a general consensus that
dumping tarry water in a pond amounts to environmental vandalism.
Like gasifiers, unless you are specific as
to the process from which the condensate originates, it's like asking
about how long is a piece of string. Certainly not all condensates are toxic
black liquor, even if black, but some have benzene and other cacogenic
compounds which can permeate into the ground water. Some condensate does
kill plants, and I have made that stuff at times, in the past 36 years or so
during development projects ):-(
Not saying your gasifier correspondent was making
it up.
Some of us have been around long enough to
have seen these sites, some 50-70 years old, where crude wood gasifiers once
powered irrigation schemes. The tar lakes are as toxic today as when they
formed, and the phenolic compounds leach to the run-offs in the wet
season.
But you would think the President of Myanmar would
have better things to do than declare black water gasification leach ponds
toxic
sites Military juntas aren't well known for their environmental awareness.
Many ponds and paddy fields double as fish
farms in Asia, and fish is an important commodity in rural communities. The
fact that it has seen as an issue by those living there, should be enough
for us who promote this technology, to support these environmental
issues.
So why the concern about tar ponds
people?
People desperate for electrical power in
poor developing countries, are not aware or interested in how the power is
made,
or what the operator does with his cooling ponds. The stink usually is enough
to
warn you about these issues, but people including yourself, whom I assume
is well educated, need to be better informed of environmental issues regarding
condensate. We wave a red flag like the man walking in front of the first
Cars, creates awareness that a dangerous change in water use is in progress,
and
responsible management is required. Water scrubbers draws our attention calling
for close scrutiny. No more, no less, hence, these interesting exchanges taking
place on this Forum.
Hope this may be of interest to
you.
Doug Williams,
Fluidyne
Gasification.
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