skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Pilot-scale treatment and cooling tower reuse of gasification wastewater

Abstract

The principal goal of the gasification research program at the University of North Dakota Energy Research Center (UNDERC) is to develop environmental data for effluent streams for fixed-bed gasification processes using low rank coals (LRC). Current efforts involve the treatment of gas liquor wastewater streams, and subsequent reuse in process cooling towers. The relatively large volume of wastewater produced in the fixed-bed gasification of LRC's makes the reuse of this stream in an evaporative cooling tower a desirable approach. However, the use of gas liquor as cooling tower makeup presents both operating and environmental concerns. At UNDERC a series of cooling tower wastewater reuse tests have been performed using water pretreated to various degrees. Wastewater for each test was produced in a pilot slagging fixed-bed gasifier (SFBG) at UNDERC using North Dakota lignite from the Indian Head mine. During the first phase of testing SFBG wastewater was treated by solvent extraction and steam stripping, to reduce levels of phenolic compounds and ammonia, prior to use as makeup to a pilot mechanical draft cooling tower. In later tests, this extracted and stripped wastewater (SGL) was further treated by biological oxidation and by granular activated carbon adsorption in pilot equipment at UNDERCmore » before being fed to the cooling tower. The final test in this series involved the use of this extensively treated wastewater with the addition of chemical corrosion and scale inhibitors as cooling tower makeup. High carbon steel corrosion rates, biological and organic fouling rates, foaming, and volatile organic stripping rates were observed in the test using stripped gas liquor from slagging fixed-bed gasification.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
North Dakota Univ., Grand Forks (USA). Energy Research Center
OSTI Identifier:
5834113
Report Number(s):
DOE/FE/60181-132; CONF-850427-1
ON: DE85009784
DOE Contract Number:  
FC21-83FE60181
Resource Type:
Conference
Resource Relation:
Conference: Western synfuels symposium, Grand Junction, CO, USA, 24 Apr 1985
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL GASIFICATION PLANTS; WASTE WATER; COOLING TOWERS; WATER REQUIREMENTS; RECYCLING; WATER TREATMENT; ACTIVATED CARBON; AMMONIA; ANAEROBIC DIGESTION; COAL GASIFICATION; PHENOLS; REMOVAL; SOLVENT EXTRACTION; ADSORBENTS; AROMATICS; BIOCONVERSION; CARBON; DIGESTION; ELEMENTS; EXTRACTION; GASIFICATION; HYDRIDES; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; INDUSTRIAL PLANTS; LIQUID WASTES; MANAGEMENT; MECHANICAL STRUCTURES; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; NONMETALS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PROCESSING; SEPARATION PROCESSES; THERMOCHEMICAL PROCESSES; TOWERS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; WATER; 010404* - Coal, Lignite, & Peat- Gasification

Citation Formats

Galegher, S J, Mann, M D, Willson, W G, Mayer, G G, and Hendrikson, J G. Pilot-scale treatment and cooling tower reuse of gasification wastewater. United States: N. p., 1985. Web.
Galegher, S J, Mann, M D, Willson, W G, Mayer, G G, & Hendrikson, J G. Pilot-scale treatment and cooling tower reuse of gasification wastewater. United States.
Galegher, S J, Mann, M D, Willson, W G, Mayer, G G, and Hendrikson, J G. Fri . "Pilot-scale treatment and cooling tower reuse of gasification wastewater". United States.
@article{osti_5834113,
title = {Pilot-scale treatment and cooling tower reuse of gasification wastewater},
author = {Galegher, S J and Mann, M D and Willson, W G and Mayer, G G and Hendrikson, J G},
abstractNote = {The principal goal of the gasification research program at the University of North Dakota Energy Research Center (UNDERC) is to develop environmental data for effluent streams for fixed-bed gasification processes using low rank coals (LRC). Current efforts involve the treatment of gas liquor wastewater streams, and subsequent reuse in process cooling towers. The relatively large volume of wastewater produced in the fixed-bed gasification of LRC's makes the reuse of this stream in an evaporative cooling tower a desirable approach. However, the use of gas liquor as cooling tower makeup presents both operating and environmental concerns. At UNDERC a series of cooling tower wastewater reuse tests have been performed using water pretreated to various degrees. Wastewater for each test was produced in a pilot slagging fixed-bed gasifier (SFBG) at UNDERC using North Dakota lignite from the Indian Head mine. During the first phase of testing SFBG wastewater was treated by solvent extraction and steam stripping, to reduce levels of phenolic compounds and ammonia, prior to use as makeup to a pilot mechanical draft cooling tower. In later tests, this extracted and stripped wastewater (SGL) was further treated by biological oxidation and by granular activated carbon adsorption in pilot equipment at UNDERC before being fed to the cooling tower. The final test in this series involved the use of this extensively treated wastewater with the addition of chemical corrosion and scale inhibitors as cooling tower makeup. High carbon steel corrosion rates, biological and organic fouling rates, foaming, and volatile organic stripping rates were observed in the test using stripped gas liquor from slagging fixed-bed gasification.},
doi = {},
url = {https://www.osti.gov/biblio/5834113}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {3}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: