[Gasification] Characterization of waste water from biomass gasification equipment: A case-study from Cambodia

[Greg Manning]

Paul thank you for posting this cross link.  I have very little condensate
but it is still an amount that I have to deal with.

Greg Manning
On Jan 16, 2016 6:20 AM, "Paul Anderson" <psanders at ilstu.edu> wrote:

> Dear Gasification Listserv and Biochar Listserv,
>
> The excellent comment by James Joyce (below) did not reach the
> Gasification readers.   It only went to the Biochar readers.   Interesting
> for two reasons (overly simplified, but to make a point):
>
> 1.  Gasification for power (engines) is what causes the problem of
> contaminated waste water, but those readers did not see the "solution
> offered".  THEY are the people who could test and evaluate the solution.
>
> 2.  Biochar production (for agriculture and carbon sequestration) has been
> proposed to make a filter-char that is to be burned, which is what biochar
> production is trying not to do.   That is, char as filter for wastes made
> by trying to burn all of the biomass to ash.
>
> Those of us who are subscribed to both lists will see the full
> discussion.   Let's hope that this is a functional solution.
>
> (Of course it is better if the nasty contents in the waste water were not
> created in the process of making the electro-mechanical power.)
>
> To James Joyce, I say "Thanks."
>
> Paul Anderson
>
> James Joyce wrote:
>
> Seems to me that the smallest foot print treatment would be to filter the
> water through char, gravity dewater and then dry the char to less than 30%
> moisture, then combust it at over 1000 deg C in a chamber that maintains a
> 2 second residence time for the gases released from the combustion. That
> will yield useful heat while destroying the recalcitrant hydrocarbons. In
> locations with weather that does not make solar or even bed drying viable,
> the process will generate more than enough heat to run a heated air drier.
>
>  After the past mess if dealt with, such a process would probably only
> need to be run for a day a week to treat scrubber water from storage tanks
> (i.e. never put out to lagoons or open storage where it is of great risk to
> the environment).
>
>  The equipment required to do that is far less complicated than the
> gasifiers themselves.
>
> Regards,
>
> James                              Posted by: James Joyce
> <james at jamesjoyce.com.au> <james at jamesjoyce.com.au>
>
>
> Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
> Email:  psanders at ilstu.edu
> Skype:   paultlud    Phone: +1-309-452-7072
> Website:  www.drtlud.com
>
> On 1/7/2016 10:45 AM, linvent at aol.com wrote:
>
> Tom,
> Thanks for the compliment and appreciation. There were hundreds of "pot"
> trials using a wide variety of treatments, extractions, etc. before the key
> process was accidentally stumbled on. Other processes have evolved and
> include the ability to take sea-water to potable with a fraction of the
> cost of distillation or RO.
> Assumptions about the tar properties including specific gravity can be
> quite misleading.
> One aspect of how to deal with the produced water from a gasifier is to
> give it the right type of compound definition and once that is reached, it
> makes it much easier to treat it.
> Sincerely,
> Leland T. "Tom" Taylor
> Thermogenics Inc.
>
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