Results 1 - 10
of
193,801
Table 21. High ammonia side stream treatment train: Second (or only) anoxic reactor performance and loading.
"... In PAGE 7: .................... 65 Table21 . High ammonia side stream treatment train: Second (or only) anoxic reactor performance and loading.... In PAGE 75: ...Feasibility of denitrification of the High-Ammonia Side Stream In terms of evaluating denitrification performance, the second anoxic reactor of the MUCT process and the only anoxic reactor of the A2/O process were analyzed as a control volume for characterization of denitrification. Their performance is described in Table21 . As with the aerobic reactor data, there was only one data point per operation period for operation periods 1, 3, 4, and 5.... In PAGE 76: ...As shown in Figure 27, the percent of nitrates denitrified in the anoxic reactor increased with the COD :NO x loading ratio until a COD:NO x ratio of approximately 15 was achieved, at which point complete denitrification was achieved. Thus, although the COD exiting the anoxic reactor was greater than the COD of the final effluent for all operation periods except operation period 1 (see Table21 ), denitrification for this wastewater appeared to be COD limited until a COD :NO x ratio of 15 was reached. The percent denitrification versus the COD :NO x ratio was apparently independent of the SRT, since data from operation period 1 (the 18 day SRT) appeared to fit the trend as well as the other operation periods (although it is only one data point).... In PAGE 76: ... The dashed curve represents the anticipated performance for this activated sludge and wastewater. A ratio above 15 was observed during operation periods 4 and 5, and complete denitrification as defined by zero nitrates being detected exiting the anoxic reactor was achieved during both of those operation periods (see Table21 ). The highest nitrate loading to the anoxic reactor that was completely denitrified was 1643 mg-N/day, observed during operation period 4.... ..."
Table 20. High ammonia side stream treatment train: Aerobic reactor performance and loading.
"... In PAGE 7: ............................... 62 Table20 . High ammonia side stream treatment train: Aerobic reactor performance and loading.... In PAGE 73: ...however, complete nitrification appeared to occur in the aerobic reactor during operation periods 3, 4, and 5, as indicated by the zero detectable ammonia exiting the reactor (see Table20 ). The final effluent ammonia concentrations corresponding to the days on which data were collected from the aerobic reactor during those operation periods were 0, 0, and 1.... ..."
Table 8. Secondary effluent treatment train: Anoxic reactor performance and loading.
"... In PAGE 7: ................................. 30 Table8 . Secondary effluent treatment train: Anoxic reactor performance and loading.... In PAGE 40: ... Although some nitrates were apparently escaping the system on occasion, the levels were not high enough or consistent enough to constitute what should be regarded as nitrate breakthrough (see Appendix 1). As the COD leaving the anoxic reactor was consistently higher than the COD leaving the final clarifier of the treatment train by 64 to 107 mg/L (see Table8 ), any nitrates escaping the system were due to insufficient contact time in the anoxic reactor, and not COD limitations. A mass balance was performed on the anoxic reactor itself, which demonstrated that denitrification of the secondary effluent was, in fact limited by contact time.... In PAGE 40: ... A mass balance was performed on the anoxic reactor itself, which demonstrated that denitrification of the secondary effluent was, in fact limited by contact time. Operation periods 1 and 2 were associated with methanol acclimation, which is supported by the fact that the anoxic reactor was subjected to the lowest nitrate and hydraulic loadings during these two operation periods, yet these two periods corresponded to the greatest amount of nitrates escaping the anoxic reactor (see Table8 for all discussion pertaining to performance of the anoxic reactor). Acclimation was complete by operation period 3, as indicated by zero nitrates being detected leaving the anoxic reactor.... ..."
Table 3: Load Balance Indexes
1995
"... In PAGE 13: ... Table3 presents the load balance indexes of different data partitioning algorithms. The load balance index is calculated as #28maxn i=1 computation time of processor i#29 #02 #28number of processors n#29 P n i=1 computation time of processor i Neither BLOCK nor CYCLIC distributions consider computation load of each element when distributing data arrays over processors, and hence both cause severe load imbalance.... ..."
Cited by 47
Table 3: Load Balance Indexes
"... In PAGE 13: ... Table3 presents the load balance indexes of different data partitioning algorithms. The load balance index is calculated as (maxn i=1 computation time of processor i) (number of processors n) Pn i=1 computation time of processor i Neither BLOCK nor CYCLIC distributions consider computation load of each element when distributing data arrays over processors, and hence both cause severe load imbalance.... ..."
Table 3: Load Balance Indexes
"... In PAGE 13: ... Both distributions exploit the locality of data accesses, and hence have lower communication costs. Load Balance Table3 presents the load balance indexes of different data partitioning algorithms. The load balance index (LBI) is calculated as LBI = (maxn i=1 computation time of processor i) (number of processors n) Pn i=1 computation time of processor i Both BLOCK and CYCLIC distributions do not consider computation load of each element when dis- tributing data arrays over processors, and hence both cause severe load imbalance.... ..."
Table 19. High ammonia sided stream treatment train : Overall performance and loading characteristics.
"... In PAGE 7: ............ 61 Table19 . High ammonia sided stream treatment train : Overall performance and loading characteristics.... In PAGE 72: ...Feasibility of nitrification of the High-Ammonia Side Stream Despite allowing forty days to acclimate, complete nitrification could apparently not be achieved with an 18 day SRT at the loading rate tested during operation period 1, with an average effluent ammonia concentration of 47.3 mg-N/L (see Table19 for these values and all other values mentioned in this discussion). The loading was decreased after operation period 1, and the SRT was increased to 24 days in order to favor nitrification as much as possible during operation period 2.... In PAGE 72: ...ccasional ammonia breakthroughs of only 1.1 and 2.9 mg-N/L (see Appendix 18), resulting in an average soluble effluent ammonia concentration of 0.8 mg-N/L (see Table19 ). The TKN loading only increased slightly from operation period 3 to operation period 4, with average TKN loadings of 3397 and 3779 mg-N/day, respectively, and only two data points exist for operation period 3.... In PAGE 72: ...8 mg-N/L to 1.8 mg-N/L (see Table19 ), with no days of zero effluent ammonia occurring during operation period 5. The slight ammonia breakthrough that was observed during operation periods 4 and 5 was probably due to cell lysis products of the high-SRT biomass in the final clarifier being flushed out before it was oxidized, or possibly the deamination of complex nitrogenous compounds, rather than incomplete nitrification, because complete nitrification was observed for all three operation periods (operation periods 3 through 5) as determined by using the aerobic reactor as a control volume (see the discussion below).... In PAGE 72: ... Increasing the TKN loading to a steady state average of 8701 mg-N/day during operation period 6 resulted in an increase in the average effluent ammonia concentration to 9.9 mg-N/L, indicating that ammonia breakthrough had definitely occurred (see Table19 ). Although the average data for operation period 6 suggests the system was stressed in terms of nitrification, earlier data during that operation period corresponded to lower loadings and better ammonia removal.... In PAGE 76: ...0 during operation period 5 to an average of 16.6 mg-N/L during operation period 6 (see Table19 ). As with nitrification, performance was complete or very near complete on September 8 and 9, but the increase in the wastewater strength after September 9 led to substantial breakthrough.... In PAGE 77: ... Similar effluent COD concentrations were measured throughout the experiment, with steady state average soluble effluent COD concentrations ranging from 32 to 39 mg/L for operation periods 1 through 5. The effluent concentration during operation period 6 increased to an average of 48 mg/L, however (see Table19 ). As shown in Figure 29, the observed overall specific COD consumption rate did not exhibit an obvious plateau however, suggesting that the y = 0.... In PAGE 78: ... The ETSS concentrations were quite variable, with daily values generally fluctuating between 5 and 60 mg/L, although average ETSS values were in the range of 13 to 26 mg/L. No operation period had a particularly lower or less variable ETSS (see Figure 30 and Table19 ), and with only 3 or 4 data points per operation period for most of the operation periods, it was not possible to separate out effects such as COD or TKN loadings or concentrations, or hydraulic loading. Thus, with relatively little difference in the average ETSS between all operation periods, the ETSS was assumed to be independent of factors such as hydraulic loading or nutrient loading, and it appears that both configurations used for the nitrification and denitrification of the high ammonia waste stream will simply tend to produce highly variable, but reasonable ETSS.... ..."
Table 3: Load Balance Indexes
"... In PAGE 13: ... Both distributions exploit the locality of data accesses, and hence have lower communication costs. Load Balance Table3 presents the load balance indexes of different data partitioning algorithms. The load balance index (LBI) is calculated as a220a16a221 a192 a183 a187 maxa222 a180a207a223 1 a224a94a225 a190 a204a10a226 a182a146a227a5a182 a202 a225a46a228 a182 a202 a190a105a229 a225 a209a100a204a10a230 a225a46a224 a229a102a231a41a231 a225 a230a69a202 a189 a197a28a187 a228 a226 a190a105a232a94a229 a230 a225 a209a100a204a74a230 a225a46a224 a229a41a231a102a231 a225 a230 a231 a228 a189 a233 a222 a180a111a223 1 a224a94a225 a190 a204a10a226 a182a142a227a49a182 a202 a225a87a228 a182 a202 a190a105a229 a225 a209a2a204a10a230 a225a46a224 a229a102a231a41a231 a225 a230a234a202 Both BLOCK and CYCLIC distributions do not consider computation load of each element when dis- tributing data arrays over processors, and hence both cause severe load imbalance.... ..."
Table 13. Primary effluent treatment train: Aerobic reactor performance and loading.
"... In PAGE 7: ........................ 44 Table13 . Primary effluent treatment train: Aerobic reactor performance and loading.... In PAGE 54: ...ffluent ammonia concentrations during operation period 8 were within the range of 1.4 and 2.4 mg-N/L (see Appendix 6). Although methanol concentrations were not measured in the aerobic reactor, there was bioavailable COD entering the aerobic reactor during operation period 8, as indicated by the difference in the COD entering and exiting the reactor, which could have contained methanol (see Table13 ). In addition, the recorded COD values are known to be biased low, indicating that even more COD, possibly in the form of methanol, was present than was measured.... ..."
Table 1. Sensitivity of delayed neutron counting technique in the analysis of the content of fissionable elements in the samples.
1998
"... In PAGE 46: ... In the present work we report the results of the measurements and comparison with transport calculations for five iron spheres, the parameters of which are listed in the Table 1. Table1 . Parameters of iron spheres.... In PAGE 52: ...ther lead isotopes. These data are taken from JENDL-3.2 library /I/ and given in Table 1. Table1 . Neutron inelastic scattering cross-sections of natural lead and his stable isotopes, averaged up on fission neutron spectrum, barns.... In PAGE 123: ... The operation reliability rises. Table1 : Efficiency of electrode geometry variation for the purpose of increase the insulation gap breakdown voltage Structure EN[81 EGP-I0-l[9] FN[81 EGP-15 EGP-15C EGP-15CT Sh6[I0] Rank (m) 1.2 1.... In PAGE 123: ... Breakdown voltage of some accelerators without tubes Breakdown voltages have been calculated at mentioned above in section 2 conditions. In Table1 EGP-15C (EGP-15-1) has the modernized column, EGP-15CT has both the column and the terminal modernized. Rtank denotes a tank radius, L is a terminal-tank distance, Emax/U denotes a field strength and an applied potential difference ratio at the field calculation.... ..."
Results 1 - 10
of
193,801