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English to Thai: Control of waterborne diseases General field: Tech/Engineering Detailed field: Environment & Ecology
Source text - English Control of waterborne diseases
a) General: Chlorination will be used for disinfection of potable water in all cases with the exception of individual or small unit water purification for which iodine tablets may be used.
b) Efficiency: The efficiency of chlorine disinfection is affected by the following variables:
1) A combination of the form of chlorine present, the pH of the water, and the contact time.
As the pH of the water increases from 5 to 9, the form of the chlorine residual changes from hypochlorus acid (HOCI) (the most effective form) to hypochlorite ion (OCI -) which is less effective.
The most effective disinfection occurs when the pH is between 5.5 and 6.5.
At the same pH, a longer contact time also results in increased disinfection.
2) The type and density of organisms present (virus, bacteria, protozoa, helminth, or others) and their resistivity to chlorine.
Bacteria are the most susceptible to chlorine disinfection whereas the cysts of the protozoa Entamoeba histolytica and Giardia lamblia are the most resistant.
3) The temperature of the water.
At lower temperatures microorganism kill tends to be slower, and higher chlorine residuals or longer contact times are needed.
4) The concentration of substances other than disease-producing organisms that exert a chlorine demand.
During disinfection, chlorine demand can be exerted by chemical compounds such as those containing ammonia and organic material.
Many of these compounds are not effectively removed in conventional water treatment processes and may be present to exert chlorine demand during disinfection.
Adobe Acrobat, AutoCAD, Microsoft Excel, Microsoft Office Pro, Microsoft Word, Powerpoint
English to Thai translation, editing/proof-reading, and interpreting.
QUALIFICATIONTranslating, Proof-reading, and Interpreting experienceCargill Inc., Minnesota, USA
- English-Thai translation and proof-reading of corporate strategy and major initiative roll-outs,
corporate brochures, training and meeting materials.
- English-Thai and Thai-English interpreting (simultaneous, consecutive, and whispered) for award
ceremonies, global manager meetings, roundtable and panel discussions, speaking events,
trainings, and workshops.
The University of the Thai Chamber of Commerce, Bangkok, Thailand
- English-Thai and Thai-English interpreting for visitors, speaker events, faculty workshops, and lab
- English-Thai summarizing of textbooks.
2003-2012 Cargill Inc., Minnesota, USA
(Innovation Manager, Marketing Program Manager, Senior Supply Chain Analyst)
2002-2003 Compatible Technology International, Minnesota, USA
(Volunteer Project Engineer)
1999-2002 The University of the Thai Chamber of Commerce, Bangkok, Thailand
(Faculty Member, Deputy Dean- Engineering School)
1996-1997 A construction consulting company, Bangkok, Thailand
Bachelor's of Engineering, Mechanical, Chulalongkorn University, Bangkok Thailand
Master's of Science, Industrial Engineering, The University of Wisconsin-Madison, USA
MBA, Supply Chain and Finance, The University of Minnesota-Twin Cities, USA