Anaerobic treatment of gasifier effluents. Quarterly report No. 4
Systems I and II have been operated since the last quarterly report for an additional period of 91 days (day 175-266). They received identical feed substrates of diluted wastewater and phosphates. The concentration of the wastewater was approx. 10% (1000 ppM TOC) for a period of 20 days (day 175-195). On day 196 of operation the concentration of raw wastewater in the influent was increased to approx. 15% (1500 ppM TOC) and the system was operated for an additional 40 days (day 126-236). During this latter period performance of both Systems I and II decreased markedly. In order to improve the efficiency of the system performance FeCl/sub 3/ was added to the feed substrate on day 209 to either precipitate, in the case of S/sup -2/, or complex in the case of CN/sup -/ and SCN/sup -/, potentially inhibitory species. No improvement in operation was noted. Therefore on day 237 the influent raw wastewater concentration was reduced to approx. 10% (100 ppM TOC) and the systems were operated an additional 17 days under these conditions. Lack of biological activity as evidenced by extremely low TOC and COD removal coupled with a lack of gas production indicated the systems were either severely inhibited or had failed. Therefore, on day 254 both Systems I and II were drained, reseeded with sludge from a municipal anaerobic sludge digester and reacclimation of these two systems was initiated. Data obtained during the pseudo steady state operation of System I and II (day 147-195) is presented.
- Research Organization:
- Georgia Inst. of Tech., Atlanta (USA)
- DOE Contract Number:
- AC18-81FC10297
- OSTI ID:
- 6753683
- Report Number(s):
- DOE/FC/10297-T3; ON: DE82018230
- Resource Relation:
- Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AMMONIA
REMOVAL
COAL GASIFICATION PLANTS
WASTE WATER
PHENOL
ANAEROBIC DIGESTION
ACTIVATED CARBON
COAL GASIFICATION
EXPERIMENTAL DATA
SORPTIVE PROPERTIES
ADSORBENTS
AROMATICS
BIOCONVERSION
CARBON
DATA
DIGESTION
ELEMENTS
GASIFICATION
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
LIQUID WASTES
MANAGEMENT
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHENOLS
PROCESSING
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER
010800* - Coal
Lignite
& Peat- Waste Management
010404 - Coal
Lignite
& Peat- Gasification