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791.
792.
Andrew H. Rose JR. Robert L. Stenburg Morton Corn Ronald R. Horsley Daniel R. Allen Paul W. Kolp 《Journal of the Air & Waste Management Association (1995)》2013,63(4):297-309
A survey of academic programs in air pollution control was made. Results from the 127 schools reporting are tabulated by state. Faculty involved in air pollution instruction are identified. Some conclusions and recommendations are presented. 相似文献
793.
Craig A. Fitzner John C. Schroeder Richard F. Olson Paul M. Tatreau 《Journal of the Air & Waste Management Association (1995)》2013,63(5):727-728
The U.S. Environmental Protection Agency (EPA), in cooperation with the Toronto Harbour Commissioners (THC), conducted a Superfund Innovative Technology Evaluation (SITE) demonstration of the THC Soil Recycle Treatment Train. The treatment train consists of three technologies operated in sequence: a soil wash process, a metals removal process, and a biological treatment process. The THC conducted an extensive demonstration of the treatment train at a 55 tons per day pilot plant in order to evaluate an approach for remediation of industrial/commercial sites that are situated in the Toronto Port Industrial District (PID). Three soils were processed during the THC demonstration. The EPA SITE demonstration project examined, in detail, soil processing from one of the sites being evaluated as part of the overall THC project. Contaminants included organic compounds and heavy metals. It has been estimated by THC that as much as 2,200,000 tons of soil from locations within the PID may require some form of treatment due to heavy metal and/or organic contamination that resulted from various industrial processing operations. The objective of the SITE demonstration was to evaluate the technical effectiveness of the process in relation to THC’s target criteria. Gravel and sand that met the THC target criteria for medium to fine soil suitable for industrial/commercial sites was produced. The fine soil from the biological treatment process did not meet the target level of 2.4 ppm for benzo(a)pyrene. However, there was a significant reduction in polynuclear aromatic hydrocarbon (PAH) compounds. The metals removal process achieved reductions of greater than seventy percent for copper, lead, nickel, and zinc. 相似文献
794.
795.
James G. Edinger Morris H. McCutchan Paul R. Miller Bill C. Ryan Mark J. Schroeder Joseph V. Behar 《Journal of the Air & Waste Management Association (1995)》2013,63(11):882-886
On June 18, 19, and 20, 1970, two aircraft, a rawinsonde, two pibal stations, and four ground stations provided simultaneous samples of total oxidant, temperature, and winds up to 8000 ft in an area extending from Santa Monica, Calif., east to Redlands and north across the San Bernardino Mountains. It was shown that photochemical oxidant formed in the marine layer is vented up the slopes and over the crest of the San Bernardino Mountains during the day. Layers of high oxidant concentrations were detected above the inversion base, suggesting that some pollution is vented up the slopes and subsequently advected back to the south. The diurnal changes in the temperature inversion also contribute to the high concentration found above the inversion base. These processes result in multi-layers of pollution. The study suggests that oxidant air pollution is transported up to 80 mi to forested mountains, where severe damage to conifer species has been documented. 相似文献
796.
Paul DeFalco Jr. 《Journal of the Air & Waste Management Association (1995)》2013,63(9):839-840
As a representative of EPA in the role of the Regional Administrator, I frequently feel like a middle man between the idealistic goals and timetables of the Congress and the practical problems of the states and local agencies in implementing air pollution control. As many of you know, EPA is one of the most decentralized of the federal agencies. Regional offices of EPA have much more authority to initiate action programs and allocate funds than do regional offices of HEW, HUD, or almost any other federal agency. This strong regional approach has sometimes been criticized as antithetical to a unified national approach to environmental policy. It has been said that you can’t run a national air program with ten idi-osyncracies. I disagree. I believe it is difficult or impossible to develop a program legislatively or administratively which is nationally uniform and yet recognizes the idiosyncracies of local situations and needs. 相似文献
797.
George T. Wolff Paul J. Lioy 《Journal of the Air & Waste Management Association (1995)》2013,63(10):1034-1038
A stepwise multiple regression procedure was employed to develop the best .fit equation relating maximum afternoon ozone concentrations to meteorological and emission factors along a 24h upwind air parcel trajectory. The equation was developed using ozone data from receptor sites in Northern New Jersey and the resulting correlation coefficient was 0.96. The four most significant variables were the upwind ozone maximum on the previous day, today’s maximum temperature, the previous day’s upwind maximum temperature and the mean wind speed from the surface to 1000 m. The model was also successfully tested at 5 other sites in the Northeastern Quadrant of the United States. The results indicate that the model could be a potentially useful tool for air pollution forecasters in predicting maximum ozone concentrations in this quadrant of the country. 相似文献
798.
John R. Bush Paul L. Feldman Myron Robinson 《Journal of the Air & Waste Management Association (1995)》2013,63(4):365-371
This paper presents the results of work conducted by Research-Cottrell under EPA contract 68-02-2104. The feasibility of electrostatic precipitation at temperatures and pressures varying from ambient condition to 1366°K and 3550 kPa, respectively, has been demonstrated in a laboratory wire-pipe electrode system. Stable corona discharges are obtained at all temperatures subject to appropriate choices of electrode dimension, polarity, and pressure. Current-voltage characteristics are reported for dry air, a simulated combustion gas, and a substitute fuel gas. The effects of temperature, pressure, electrode geometry and polarity on sparkover voltage, corona-starting voltage, and current are evaluated. A precipitator performance model is included to incorporate this data into a high temperature, high pressure precipitator design. This model has been evaluated for an electrostatic (HTHP) precipitator following a pressurized fluidized bed combustor at 1089 K and 920 kPa. It is recommended that prototype HTHP electrostatic precipitators be applied to pilot coal gasifiers and fluidized bed combustors to obtain detailed design data and to verify the accuracy of the performance model under actual operating conditions. 相似文献
799.
Paul E. Rider Carole C. Rider Robert N. Corning 《Journal of the Air & Waste Management Association (1995)》2013,63(10):1011-1013
One of the more common and useful methods of testing for SO2 in the atmosphere is to use the Huey sulfation plate.1 It has a layer of PbÕ2 particles suspended in an inert substrate which reacts with ambient SO2 gas to form PbSÛ4. The amount of PbSÛ4 can be determined by gravimetric, spec-trophotometric, or turbidimetric methods. The amount of atmospheric SO2 is estimated by assuming a linear correlation between it and measured PbS04 on the plate. 相似文献
800.
Anthony J. Buonicore Joseph P. Reynolds Louis Theodore Paul S. Farber 《Journal of the Air & Waste Management Association (1995)》2013,63(5):602-611
This paper presents a detailed review and critical evaluation of current technologies as applied to fine particulate emissions from coal-fired utility boilers. Quantitative assessments of the capabilities of both conventional and novel air pollution control devices to meet three different performance standards—the present New Source Performance Standard (NSPS) of 0.03 Ib particulate/MBtu heat input, and standards of 0.05 and 0.1 Ib particulate/MBtu are included. Each of the three conventional devices (electrostatic precipitator, fabric filter baghouse, and wet scrubber) is compared and rated with respect to eight different performance categories. This information can be used to determine the relative effectiveness and attractiveness of these three control devices. Novel devices are compared and rated in the same manner, the conclusions from which may provide the research administrator with a guide for the selection of those novel devices which offer the best potential for commercialization. The major conclusions of the investigation are: (1) The use of conventional scrubbers for fine particulate control on coal-fired utility boilers may no longer be feasible at the new NSPS of 0.03 Ib/MBtu. (2) At the old NSPS (0.1 Ib/MBtu) conventional electrostatic precipitators and baghouses were often competitive. For the new stricter standard, however, the baghouse generally is the more attractive alternative. (3) Novel devices appear to offer almost no hope for this particular application (at a commercial level) between now and 1985 and only little hope before 1990. 相似文献