Biotoxicity Characterization of a Produced-Water Discharge in Wyoming

1992 ◽  
Vol 44 (06) ◽  
pp. 744-748 ◽  
Author(s):  
E.R. Mancini ◽  
C.T. Stilwell
Keyword(s):  
Produced Water ◽  
Water Discharge

Using HEM surveys to evaluate disposal of by-product water from CBNG development in the Powder River Basin, Wyoming

Geophysics ◽  
2008 ◽  
Vol 73 (3) ◽  
pp. B77-B84 ◽  
Author(s):  
Brian A. Lipinski ◽  
James I. Sams ◽  
Bruce D. Smith ◽  
William Harbert
Keyword(s):  
River Basin ◽  
Produced Water ◽  
Water Discharge ◽  
Geophysical Methods ◽  
Powder River Basin ◽  
Coal Bed ◽  
Coal Beds ◽  
Occam’S Inversion ◽  
Product Water ◽  
Location Strategies

Production of methane from thick, extensive coal beds in the Powder River Basin of Wyoming has created water management issues. Since development began in 1997, more than 650 billion liters of water have been produced from approximately 22,000 wells. Infiltration impoundments are used widely to dispose of by-product water from coal bed natural gas (CBNG) production, but their hydrogeologic effects are poorly understood. Helicopter electromagnetic surveys (HEM) were completed in July 2003 and July 2004 to characterize the hydrogeology of an alluvial aquifer along the Powder River. The aquifer is receiving CBNG produced water discharge from infiltration impoundments. HEM data were subjected to Occam’s inversion algorithms to determine the aquifer bulk conductivity, which was then correlated towater salinity using site-specific sampling results. The HEM data provided high-resolution images of salinity levels in the aquifer, a result not attainable using traditional sampling methods. Interpretation of these images reveals clearly the produced water influence on aquifer water quality. Potential shortfalls to this method occur where there is no significant contrast in aquifer salinity and infiltrating produced water salinity and where there might be significant changes in aquifer lithology. Despite these limitations, airborne geophysical methods can provide a broadscale (watershed-scale) tool to evaluate CBNG water disposal, especially in areas where field-based investigations are logistically prohibitive. This research has implications for design and location strategies of future CBNG water surface disposal facilities within the Powder River Basin.

Validation of Produced Water Discharge Modeling From Guamare Outfalls I and II, Rio Grande do Norte, Brazil

2010 ◽  
Author(s):  
Ana Carolina Lammardo ◽  
Andrea Gallo ◽  
Mauricio Lammardo ◽  
Andre Lima Torres Mendes ◽  
Marcelo Mota de Azevedo
Keyword(s):  
Produced Water ◽  
Water Discharge ◽  
Rio Grande ◽  
Discharge Modeling

Cultivable bacterial flora of Indian oil reservoir: isolation, identification and characterization of the biotechnological potential

Biologia ◽  
2015 ◽  
Vol 70 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Neha Saxena ◽  
Soham Pore ◽  
Preeti Arora ◽  
Neelam Kapse ◽  
Anupama Engineer ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Produced Water ◽  
Phylogenetic Analyses ◽  
Bacterial Flora ◽  
Oil Reservoirs ◽  
Rrna Gene ◽  
Oil Reservoir ◽  
Biotechnological Potential ◽  
Taxonomic Novelty

Abstract‘Produced water’ is a term used in oil industry to describe water produced along with oil and gas from oil reservoir. Microorganisms have been frequently isolated from produced water/oil reservoirs; however, there is paucity of information regarding the diversity and characterization of bacterial flora from Indian oil reservoirs. The present investigation was undertaken to study bacterial diversity associated with Indian oil reservoirs and to investigate their potential as a source of industrially valuable enzymes. A total of 103 strains were isolated from five oil reservoirs. PCR-based DNA fingerprinting grouped these strains into 72 genovars. These isolates were identified using morphological, phenotypical and phylogenetic analyses. Most of these isolates were thermophiles (growing at 45◦C or higher), halotolerant (growth at 5% salinity) and were distributed through a variety of genera including but not limited to Bacillus, Chelatococcus, Paenibacillus and Pseudomonas species. The 16S rRNA gene sequence of several strains shared less than 97% homology with the reference sequences in the GenBank database indicating taxonomic novelty of these strains. Assessment of the biotechnological potential of 72 genovars revealed that majority of strains produce one or many of the valuable enzymes including amylase, cellulase, xylanase, pectinase, inulinase, protease, alcohol dehydrogenase and urease. Most of the isolates also degraded crude oil or petroleum hydrocarbons. The vast pool of phenotypic, genetic and functional diversity of the strains retrieved in this study suggested oil reservoirs as yet largely untapped and potent source of taxonomically novel and biotechnologically valuable microorganisms.

scholarly journals Degradation of recalcitrant organic polluants in seafood wastewater by modified TiO2 photocatalysts

2017 ◽  
Vol 1 (T4) ◽  
pp. 241-248
Author(s):  
Loc Cam Luu ◽  
Da Linh Ho ◽  
Phu Chi Hoang ◽  
Tri Nguyen ◽  
Van Thi Thuy Nguyen ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Discharge ◽  
Pure Tio2 ◽  
Reaction Conditions ◽  
Tio2 Photocatalysts ◽  
Processing Plants ◽  
Seafood Processing ◽  
The Relationship

In seafood processing plants, industrial waste water discharge reached virtually the level B (QCVN 11-MT:2015/BTNMT) after using mechanical, physicochemical and biological wastewater treatment methods. However, their COD values (COD = 20-120 mg/L) were not qualified for allowable concentration of discharge requirement - level A (COD ≤ 75 mg/L) in many cases. In this paper, bio-treated seafood waster water was continually treated by TiO2 photocatalyst modified by doping Fe and N to degrade recalcitrant organic pollutants to obtain the A level water which can be resused. TiO2 modified by doping Fe and N were prepared and investigated the physico-chemicalproperties. The results showed that modified TiO2 had a lower band gap and more photoactivity than pure TiO2. Beside that, at the reaction conditions: reaction temperature 25 oC, dissolved oxygen concentration 7.6 mg/L and pH = 7, the optimal concentration of catalysts was determined (1.25 g/L). After 12 hours of treatment, COD removal efficiency on TiO2-Fe and TiO2-N catalysts attained 41.1 % and 64.3 %, respectively, and their COD values reached 49.3 and 29.9 mg/L, correspondingly. After treatment, the quality of waste water discharge met the level A (QCVN 11-MT:2015/BTNMT) and became a safety source for reusing (QCVN 08-MT:2015/BTNMT). In addition, the relationship between the characterization of modifed TiO2 and their activity was characterized.

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