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- W55898537 abstract "Coal conversion wastewaters present unusual control technology problems due to their high concentrations of certain toxic chemicals such as phenolics, ammonia, and sulfide ion. The most contaminated wastewater streams are the process condensates or sourwaters that have been in direct contact with organic species at high temperature during the conversion process. Treatment of these process condensates to meet present and projected discharge limits is thus a formidable challenge. The emphasis of this report is on the specific effects of the bench-scale treatment of a sample of process condensate from the H-Coal liquefaction process pilot plant located at Catlettsburg, Kentucky. The specific unit operations used in our study were: steam-stripping to remove ammonia and sulfide ion; solvent-extraction with methyl isobutyl ketone to remove phenolic compounds and neutral organics; and ozonation and carbon adsorption as polishing steps. Some of the advantages and limitations of these operations are reported. Objectives for this project included (1) evaluating, in detail, some of the process chemistries associated with wastewater treatment operations; (2) evaluating the toxicity phenomena associated with individual wastewater treatment processes and with the total treatment system; (3) supporting the development of designs for process units used in field tests of wastewater treatment operations; andmore » (4) identifying research and development needs and opportunities for process improvements in the area of wastewater treatment.« less" @default.
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- W55898537 date "1982-09-01" @default.
- W55898537 modified "2023-09-26" @default.
- W55898537 title "Bench-scale treatment of coal-liquefaction-process wastewaters" @default.
- W55898537 hasPublicationYear "1982" @default.
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