CATEGORY: WASTEWATER
Singapore
International Water Week, 1 - 5 June 2014
Wastewater treatment challenges faced by the
petrochemical and refinery industry and opportunities for water
reuse
C. Zaffaroni*, G.
Daigger**, P. Nicol***, T.W. Lee ****
*CH2MHILL, via XXV Aprile, 2 – 20097 S. Donato Milanese - Italy
carlo.zaffaroni@ch2m.com
**CH2MHILL, 9191 South Jamaica Street Englewood, CO 80112 - USA
glen.daigger@ch2m.com
***CH2MHILL, 245 Consumers Road Suite 400 M2J 1R3 Toronto - Canada
peter.nicol@ch2m.com
****CH2MHILL, 150 Beach Road, Gateway West, 34th Floor - Singapore 189720
TuckWai.Lee@ch2m.com
SUMMARY
Industrial wastewater is
different from municipal wastewater, while the limits for treated effluent
discharge and the target for re-use are typically the same and derived from the
BAT for municipal wastewater treatment. Also main treatment unitary processes
are the same; however a proper adaptation to the specificity of the different
industrial wastewater streams is needed.
The paper aims to provide some real life
examples of challenges due to the specificity of wastewater source (high TDS,
high temperature, some specific streams like the spent caustic), to the lack of
previous similar experiences (like the use of membrane bioreactor for
refineries and/or the use of absorption chillers and plate and frame heat
exchanger) or to specific legislation aiming to protect sensitive environment
(limits on total nitrogen or on soluble metals) were faced and overcome
achieving treatment and/or re-use standards. Moreover the items related to the
overall optimization of the water cycle around the industrial facilities with
appropriate utilization of existing wastewater treatment units for the most
appropriate purpose as well as the selection between municipal and industrial
treated effluents as a source for water re-use are also discussed.
Free Full Text Source: http://waterconvention.siww2014.com/assets/pdf/theme-5/water-solutions-for-the-oil-gas-industry/CZaffaroni_PetroCRefinery.pdf
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