Download or read book Effectiveness of an Anaerobic Granular Activated Carbon Fluidized bed Bioreactor to Treat Soil Wash Fluids written by Karen M. Miller and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efficient Management of Wastewater from Manufacturing written by Victor M. Monsalvo and published by CRC Press. This book was released on 2015-06-22 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efficient Management of Wastewater from Manufacturing is an accessible research compendium, highly useful for anyone involved with the phytosanitaries, food and beverage, pharmaceutical, or textile industries. The editor, Victor Monsalvo, is a well-respected expert in the field who has included many of his own studies. He has also enlisted articles
Download or read book Anaerobic Digestion in a Tapered Fluidized Bed Reactor written by Rangasamy Parthiban and published by LAP Lambert Academic Publishing. This book was released on 2010-09 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability of potable water is receding due to the discharge wastewater from industrial sector. Purification and recycling of wastewater have been made mandatory. Anaerobic technology is the most versatile option for treating high-strength organic wastewater. The book describes the treatment of synthetic starch containing wastewater of high COD in an anaerobic tapered fluidized bed bioreactor which reduced the wash out of the biomass. Mesoporous Activated Carbon (MAC) was used as a carrier matrix to improve the efficiency through insitu immobilization of anaerobic bacteria and caused internal micro agitation due to entrapped gases. The effect of parameters viz., temperature, pH, BOD, COD, biogas, total VFA and its composition, alkalinity, ORP, bed height and superficial velocities on the performance of the reactor is discussed. The COD removal efficiency is 92% in the reactor. The book includes preparation and characterization of MAC, optimization of the reactor and kinetic study for different start-up under transient conditions. Further a mathematical model for the prediction of the output values using different neural network techniques is developed.
Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 1812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Testing of an Aerobic Granular Activated Carbon Fluidized Bed Reactor with Internal Media Cleaning written by Steven I. Safferman and published by . This book was released on 1994 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Evaluation of an Envirex GAC Fluid Bed Bioreactor Treatment of Chlorobenzene in Groundwater written by and published by . This book was released on 1995 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although granular activated carbon (GAC), fluidized-bed bioreactors have been widely used for treatment of groundwater containing readily biodegradable organic compounds, there is only limited experience with treatment of chlorinated organics found at many DOD and industrial sites. This report summarizes performance data from a field evaluation of an Envirex model 30 bioreactor operated at various chlorobenzene concentrations and organic loading rates over a 7-month period. The work was conducted under a collaborative research and development agreement between US Air Force Armstrong Laboratory and the Dow Chemical Company. Microorganisms used to seed the bioreactor were provided by activated sludge from the site, as well as indigenous chlorobenzene-degrading bacteria present in the groundwater. Removal efficiencies exceeding 99.99% were achieved at organic loading rates between 6 and 10 pounds of total oxygen demand (lb TOD) per 25 cubic feet per day and hydraulic residence times of 7 minutes. Influent chlorobenzene concentrations ranging from 100 to 170 ppm were consistently reduced to below the detection limit of 10 ppb. Additional studies conducted at loading rates in excess of 10 pounds TOD per 25 cubic feet per day were useful for identifying critical operating parameters and potential system improvements, but were not representative of performance at lower loadings. Economic evaluation suggested that groundwater treatment costs for the bioreactor were lower than other conventional technologies. (AN).
Download or read book Biological Activated Carbon in Fluidized Bed Reactors for the Treatment of Groundwater Contaminated with Volatile Aromatic Hydrocarbons written by Xianda Zhao and published by . This book was released on 1994 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anaerobic Pre treatment of CERCLA Leachates by a Granular Activated Carbon Fluidized bed Reactor and an Upflow Anaerobic Filter written by Mohammed Nasimul Islam and published by . This book was released on 1993 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Attachment Properties in Expanded bed Activated Carbon Anaerobic Filters written by Yi-tin Wang and published by . This book was released on 1983 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Granular Activated Carbon Particle Size on the Performance of Expanded Bed Anaerobic Reactors in the Treatment of Coal Gasification Wastewater written by Barry Edward Klepp and published by . This book was released on 1986 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Series Reactor Configuration and Thermophilic Temperatures Applied to the Treatment of Coal Gasification Wastewater Using Anaerobic Fluidized Bed Granular Activated Carbon Filters written by John Fraser and published by . This book was released on 1986 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of the Biological Granular Activated Carbon Fluidized Bed Reactor Process for Gas Industry Waste Treatment written by Dan Wagner and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Digestion of Municipal Wastewater Biosolids Using an Anaerobic Fluidized Bed Bioreactor AnFBR written by Zhenqi August Wang and published by . This book was released on 2014 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research investigated the efficacy of the anaerobic fluidized bed bioreactor (AnFBR) technology in treating municipal wastewater sludges. Primary sludge (PS) and thickened waste activated sludge (TWAS) were studied in two lab-scale AnFBRs using High-density polyethylene (HDPE) as carrier media. PS was investigated at various organic loading rates (OLRs) ranging from 9 to 18 kg chemical oxygen demand (COD)/m3-d corresponding to hydraulic retention times (HRTs) of 2 to 4 days, with maximum COD and volatile suspended solid (VSS) removal efficiency of 70% and 72%, respectively. For TWAS, VSS destruction efficiency varied from 53% at an HRT of 4 days and OLR of 12 kg COD/m3-d to 61% at an HRT of 8 days and an OLR of 6 kg COD/m3-d. The results showed that mesophilic anaerobic fluidized bed bioreactor is highly effective for COD removal and VSS reduction of municipal biosolids compared with conventional anaerobic digestion. Furthermore, the specific bacterial community activity tests showed a significant difference between solid retention times (SRT) based on general VSS and retention times based on the activity of methanogenic, acidogenic, and acetogenic microbes. While SRTs based on VSS measurements in the PS AnFBR were 3.3 days, the activity-based retention times varied from 12.2 to 14.6 days. Similarly, in the TWAS AnFBR, the SRTs based on VSS measurements were 5.0 days, and the activity-based retention times ranged from 8.0 to 9.4 days. These specific microbial activities tests can provide a better understanding of the performance of full-scale digesters, help to determine the rate-limiting process and optimize the operation conditions.
Download or read book Demonstration of the Anaerobic Fluidized Bed Reactor for Pinkwater Treatment at McAlester Army Ammunition Plant written by Stephen W. Maloney and published by . This book was released on 2005 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impact of Powdered Activated Carbon on Anaerobic Membrane Bioreactors Treating Municipal Wastewater Under Psychrophilic Conditions written by Shalabha Kalliath and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The anaerobic membrane bioreactor (AnMBR) is an emerging technology, which has the potential for anaerobic digestion of wastewaters (WW) at high efficiency while generating biogas as a by-product (Harb et al., 2017). One of the main challenges associated with AnMBRs is reduced efficiency at low temperatures due to decreases in both bioreactor and membrane performance which makes using AnMBRs in North America impractical as WW is temperature is typically in the range of 10 - 20°C (Environment Canada, 2017). The addition of powdered activated carbon (PAC) could be a solution to the increased fouling and low chemical...(COD) removals that occur at low temperatures as it has abrasive and adsorptive properties. There are some studies that have observed the effect of PAC on AnMBRs resulting in increased quality of permeate but none tested varying concentrations of PAC at psychrotrophic temperatures using raw WW. Hence, this was investigated in this study. Three-lab scale AnMBRS were set up in parallel and monitored for both bioreactor and membrane parameters over a two-phase experiment. Initially the membranes were operated at 10°C and 24°C to establish the performance under mesophilic and psychrophilic conditions without the presence of PAC. Then all three reactors were converted to psychrophilic conditions and three different concentrations of PAC were added to the reactors, 0.5, 1.0, and 2.0 g/L. To determine the effect of PAC on membrane performance, transmembrane pressure (TMP) and concentrations of organic sub-fractions were monitored. Bioreactor performance was evaluated by monitoring chemical oxygen demand (COD) and suspended solids (SS) in the waste activated sludge (WAS) feed and permeate. Stage 1 of the research showed that membrane fouling increased at psychrotrophic temperatures as the cycle lengths decreased from 9 days at 24°C to 3 days at 10°C. Similarly, the bioreactor performance also decreased significantly with the temperature drop, resulting in lower permeate quality. Overall, the results were consistent with literature reports. Stage 2 of the experimentation revealed that adding 1.0 g/L of PAC significantly lowered the level of SCOD in the WAS and TCOD in the permeate, resulting in a higher quality of permeate. Reduced performance with 2.0 g/L of PAC was attributed to the PAC acting as both an adsorbent (non biodegradable COD & colloidal COD) and as a scouring agent. At a low concentration (0.5 g/L) of PAC the adsorptive effect was not prominent. At the highest concentrations, PAC was adsorbing and causing significant scouring as was evident through the increase in cycle lengths. However, it appears that the increased scouring reduced biofilm formation at the membrane and thus limited biodegradation that occurred on it thereby resulting in a lower quality of permeate and higher SCOD levels. Hence adding PAC at moderate concentrations was deemed to provide the best performance.
Download or read book Fluidized bed Adsorption Bioreactor for the Treatment of Groundwater Contaminated with Solvents at Low Concentration written by Paul H. Miyares and published by . This book was released on 1999 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
