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WSP10774
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Last modified
1/26/2010 3:14:39 PM
Creation date
10/12/2006 4:31:48 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8271.200
Description
Colorado River Basin Salinity Control Program - Development and History - UCRB 13a Assessment
Basin
Colorado Mainstem
Water Division
5
Date
1/1/1979
Title
Costs of Wastewater Disposal in Coal Gasification and Oil Shale Processing
Water Supply Pro - Doc Type
Report/Study
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<br />....- <br />en <br />o <br />:,.H <br /> <br />TABLE 1-1 SUMHARY OF WASTEl-IATER STREA.'-1S A.~D TREATItENT CDSTS <br />FOR CDAL GASIFICATION <br /> <br />Flow Rate <br />1V'aste Stream (AF/yr) <br /> <br />Runoff < 200, very <br />variable <br /> <br />Boiler <br />teedw.1te ['" <br />preparation <br />'Waste <br /> <br />Foul process <br />condensate <br /> <br />Cooling <br />tower <br />blowdown <br /> <br />Domestic <br />wastes <br />at plant <br /> <br />320, with <br />variations <br />of twofold <br />to one-fifth <br /> <br />2,250, with <br />variations <br />of twofold <br />to one-fifth <br /> <br />350, with <br />variations <br />of twofold <br />to one-fifth <br /> <br />45 <br /> <br />Quality Before <br />Treatment <br /> <br />good, with <br />possibly oily <br />contamination <br /> <br />2.0 to 2.5~ <br />dissolved <br />inorganic <br />solids <br /> <br />high level of <br />ammonia, BOD, <br />COD, & phenols <br /> <br />dependent upon <br />the gasifica- <br />tion process.... <br /> <br />low TDS, <br />SDD D 200-250 <br />mg/l <br /> <br />*If ground water 1s protected. <br /> <br />Disposal Options <br /> <br />1) removal of 011 and reuse in <br />cooling system <br /> <br />1) with coal ash* <br />2) lined evaporation pond <br />3) vapor compression and then <br />lined evaporation pond <br /> <br />1) sequential treatment for use in <br />cool inK tower ~* <br />a) ammonia stripping <br />and recovery <br />b) solvent extraction <br />c) bioloKical oxidation <br /> <br />1) with coal ash* <br />2) with coal ash after reduction <br />of organic contamination <br />3) lined eVaporation pond <br />4) vapor compression and then <br />lined evaporation pond <br /> <br />1) secondary treatment and <br />low-quality in-plant use <br />or revegetation <br /> <br />Approximate Cost <br />(~/million Stu) <br /> <br />not estimated <br /> <br />negligible <br />0.12-1.2 <br /> <br />0.14-2,1 <br /> <br />not est1mated*** <br />1.25-5.0 <br />0.35-1.4 <br /> <br />negligible <br /> <br />0.05-6.0 <br />0.35-1.4 <br /> <br />0.4-2.4 <br /> <br />0.03 <br /> <br />**It is anticipated tha~ foul process condensate will be treated only as much as is necessary <br />in order to make it acceptable for make-up to a cooling tower (wh~n diluted with additional <br />river water). <br /> <br />***In moat plants, the cost of treatment would be offset by the value of the ammonia recovered. <br /> <br />**.*The reason for this is that the kind of gasification process controls the quality of the <br />make-~p water in the cooling tower (i.e., the foul process condensate produced varies from <br />process to process). Bad quality blowdown would be expected to have the following concen- <br />trations of constituents (in mg/l): phenols (8-20), 800 (2,000-5,000), CDD (7,000-17,000), <br />ammonia (less than 20), and TDS (2,000-6,000+). <br /> <br />La <br />
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