Hello thank you this is very interesting one of the most interesting for us....
best wishes 2016 2016-01-04 16:31 GMT+01:00 Tom Miles <[email protected]>: > Since 2005 hundreds of small scale gasifiers have been installed in > Myanmar, Cambodia and other South East Asian countries to offset high cost > diesel to generate shaft and electric power in rice mills and palm > factories. They are often in the 100+kW scale. Initially they were dual > fueled with diesel but increasingly they are 100% producer gas. Ankur > Scientific introduced a dry cleaning system in 2009 but in most cases the > gasifiers use water scrubbers and the waste water and sludge is discharged > into ponds without remediation. Simon Shackley and others have published a > thorough characterization of waster waters from several gasifiers. > > > > Crop residues are best gasified at low temperatures. Low temperatures > generate tars. Scrubbers are the lowest cost cleaning technique. Water > strips toxic chemicals from the gas which become carried into the > environment with water and sludge. Gasifier char is very useful. Sludge and > black water are dangerous. > > > > The remediation of gasifier wastewater is a challenge for us. As we look > forward to installing small scale gasifiers around the world we need to > solve this problem . What are your solutions for filtering and remediating > gasifier scrubber water? One solution might be running continuous blowdown > though a vegetated biological filter where the biochar is used as part of > the media. What have you tried? > > > > Tom > > > > T R Miles Technical Consultants Inc > > Portland, OR 97225 > > [email protected] > > www.trmiles.com > > > > Characterisation of waste water from biomass gasification equipment: A > case-study from Cambodia > > Article in World Review of Science Technology and Sustainable Development > 12(2):126-151 · December 2015 > > DOI: 10.1504/WRSTSD.2015.073829 > > > > Abstract > > The gasification of rice husks for small-scale power generation in rice > mills and other small factories in Cambodia has spread rapidly in the past > decade and has a favourable investment payback period where the facility is > off-grid. The technology is widely regarded as a sustainable, low-carbon > power option. However, installed gasification technologies produce a black > waste water which is frequently disposed of into the local environment > without any treatment. An analysis was undertaken to identify and measure > the key potential contaminants and compare concentrations in the water and > sediment with regulatory thresholds established in Cambodia and within > other jurisdictions. It was found that concentrations of organic > contaminants such as phenols and benzene-type molecules (BETX) (water and > sediment) and polycyclic aromatic hydrocarbons (PAHs) (sediment), as well > as macro water quality indicators, were far higher than regulatory > thresholds prescribe, posing threats to sensitive aquatic ecosystems into > which such waste is introduced. > > > > > > > > > > _______________________________________________ > Gasification mailing list > > to Send a Message to the list, use the email address > [email protected] > > to UNSUBSCRIBE or Change your List Settings use the web page > > http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org > > for more Gasifiers, News and Information see our web site: > http://gasifiers.bioenergylists.org/ > > -- *gradite i nostri piu' distinti saluti, Atentamente,best regards, freundliche Grüße *наилучшими пожеланиями *Nicolo Cerni , * *N C A* (N)ico (C)erni (A)ssociates www.nico-cerni.com , marketing industriale, [email protected] *Customers only * *+39 340 830.67.97 - Home office +39 045 69.32.996 ( 24 hours voice recorder )* *Hauptquartier Deutschland Hr/ Mr Wilhelm Doenne* Telefon *+49. 5141.219.83.72 / ( 09:30 / 17:oo)* - 5141 980 912 fx ( DDU Celle ) Mobil +49.152 028 05119 ( *Wilhelm Doenne* ) Funk +49 176 457 38 790 .( *Nico Cerni *) *EPC department - European and international contractors * *Mechanical, *Tecneco machinery - Ing Alberto Busca +39 342 766 3451, http://www.tecneco-srl.com* Co-trigeneration :* Ing Fabio Guerrini +39 335 627 43 66 http://www.itakasrl.it/*IT and Electrical contractors* Esiet Office (24h) +39.02.97.37.58.01 - Ms Felicita ( 09:oo-17:oo) - *Skype : nico_cerni * *THIS E MAIL IS CONFIDENTIAL OUR CONFIDENTIALITY AND NON DISCLOSURE AGREEMENT APPLIES - DIESE NACHRICHT IST VERTRAULICH, ES GILT UNSERE VERSCHWIEGENHEITSVEREINBARUNG*
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