11-Screen3Model大气估算Screen3Model大气估算

1.相关说明 大气估算模式Screen3是一个单源高斯烟羽模式，可计算点源、火炬源、面源、和体源的最大地面浓度，以及下洗和岸边熏烟等特殊条件下的最大地面浓度。经估算模式计算出的是某一污染源对环境空气质量的最大影响程度和影响范围的保守的计算结果。本次计算主要考虑脱氢过程中产生的硫化氢，污染源点源，污染物为硫化氢，通过估算和相关数据分析，估算硫化氢挥发损失速率为0.161g/s，按照国家恶臭污染物排放标准，新建污染源的硫化氢的一级排放标准为0.03mg/3。在计算结果中，预测结果用不同颜色表述不同污染程度，占标率100%的为红色，80%为黄色，10%为绿色，10%为白色。可见在900米以上均低于排放标准的80%，不会造成高于国家排放标准的环境污染，符合绿色环保的理念。2.污染源分析2.1污染源参数设定图1 污染源参数给定2.2污染物参数设定 图2 污染物参数给定2.3预测参数设定 图3 预测参数2.4计算结果分析 图4 计算结果2.5计算结果图示图5 图形结果2.6计算输入结果 01:42:48 * SCREEN3 MODEL RUN * * VERSION DATED 96043 * SCREEN3 Input File for 污染源1_SO2_点源 SIMPLE TERRAIN INPUTS: SOURCE TYPE = POINT EMISSION RATE (G/S) = 35.3400 STACK HEIGHT (M) = 210.0000 STK INSIDE DIAM (M) = 8.7000 STK EXIT VELOCITY (M/S)= 23.7900 STK GAS EXIT TEMP (K) = 399.5410 AMBIENT AIR TEMP (K) = 293.1500 RECEPTOR HEIGHT (M) = 0.0000 URBAN/RURAL OPTION = RURAL BUILDING HEIGHT (M) = 0.0000 MIN HORIZ BLDG DIM (M) = 0.0000 MAX HORIZ BLDG DIM (M) = 0.0000 THE REGULATORY (DEFAULT) MIXING HEIGHT OPTION WAS SELECTED. THE REGULATORY (DEFAULT) ANEMOMETER HEIGHT OF 10.0 METERS WAS ENTERED. BUOY. FLUX = 1175.481 M*4/S*3; MOM. FLUX = 7857.709 M*4/S*2. * FULL METEOROLOGY * * * SCREEN AUTOMATED DISTANCES * * * TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES * DIST CONC U10M USTK MIX HT PLUME SIGMA SIGMA (M) (UG/M*3) STAB (M/S) (M/S) (M) HT (M) Y (M) Z (M) DWASH - - - - - - - - - - 10. 0.000 1 1.0 1.2 2385.7 2384.69 29.11 28.96 NO 100. 0.000 1 1.0 1.2 2385.7 2384.69 88.18 85.14 NO 200. 0.6219E-09 5 1.0 2.9 10000.0 429.94 58.02 57.19 NO 300. 0.9975E-07 5 1.0 2.9 10000.0 429.94 65.07 63.44 NO 400. 0.1224E-06 5 1.0 2.9 10000.0 429.94 66.58 63.76 NO 500. 0.1536E-06 5 1.0 2.9 10000.0 429.94 68.40 64.13 NO 600. 0.1658E-03 1 3.0 3.7 960.0 934.90 161.87 179.56 NO 700. 0.4054E-01 1 3.0 3.7 960.0 934.90 183.56 236.65 NO 800. 0.6927 1 3.0 3.7 960.0 934.90 204.74 304.36 NO 900. 3.059 1 3.0 3.7 960.0 934.90 225.49 382.80 NO 1000. 6.633 1 3.0 3.7 960.0 934.90 245.86 472.09 NO 1100. 9.770 1 3.0 3.7 960.0 934.90 265.90 572.30 NO 1200. 11.59 1 3.0 3.7 960.0 934.90 285.64 683.52 NO 1300. 12.17 1 3.0 3.7 960.0 934.90 305.11 805.84 NO 1400. 11.98 1 3.0 3.7 960.0 934.90 324.35 939.32 NO 1500. 11.51 1 2.5 3.1 1080.9 1079.88 361.45 1089.93 NO 1600. 11.04 1 2.5 3.1 1080.9 1079.88 380.87 1245.71 NO 1700. 10.53 1 2.5 3.1 1080.9 1079.88 400.07 1412.91 NO 1800. 10.06 1 2.5 3.1 1080.9 1079.88 419.08 1591.60 NO 1900. 9.628 1 2.5 3.1 1080.9 1079.88 437.90 1781.85 NO 2000. 9.235 1 2.5 3.1 1080.9 1079.88 456.55 1983.72 NO 2100. 8.947 1 2.5 3.1 1080.9 1079.88 471.21 2196.44 NO 2200. 8.686 1 2.5 3.1 1080.9 1079.88 485.40 2420.95 NO 2300. 8.438 1 2.5 3.1 1080.9 1079.88 499.64 2657.38 NO 2400. 8.203 1 2.5 3.1 1080.9 1079.88 513.94 2905.77 NO 2500. 7.981 1 2.5 3.1 1080.9 1079.88 528.27 3166.17 NO 2600. 7.770 1 2.5 3.1 1080.9 1079.88 542.63 3438.61 NO 2700. 7.569 1 2.5 3.1 1080.9 1079.88 557.01 3723.12 NO 2800. 7.378 1 2.5 3.1 1080.9 1079.88 571.41 4019.75 NO 2900. 7.197 1 2.5 3.1 1080.9 1079.88 585.82 4328.54 NO 3000. 7.024 1 2.5 3.1 1080.9 1079.88 600.24 4649.53 NO 3500. 6.289 1 2.0 2.5 1298.3 1297.34 697.65 5000.00 NO 4000. 5.720 1 2.0 2.5 1298.3 1297.34 767.06 5000.00 NO 4500. 5.245 1 2.0 2.5 1298.3 1297.34 836.41 5000.00 NO 5000. 4.845 1 2.0 2.5 1298.3 1297.34 905.51 5000.00 NO 5500. 4.856 2 3.0 3.7 960.0 934.90 727.44 738.99 NO 6000. 4.761 2 3.0 3.7 960.0 934.90 780.48 807.44 NO 6500. 4.635 2 2.5 3.1 1080.9 1079.88 844.42 887.56 NO 7000. 4.508 2 2.5 3.1 1080.9 1079.88 896.09 957.06 NO 7500. 4.347 2 2.5 3.1 1080.9 1079.88 947.48 1027.41 NO 8000. 4.170 2 2.5 3.1 1080.9 1079.88 998.58 1098.52 NO 8500. 3.993 2 2.5 3.1 1080.9 1079.88 1049.38 1170.33 NO 9000. 3.856 2 2.0 2.5 1298.3 1297.34 1115.57 1256.65 NO 9500. 3.723 2 2.0 2.5 1298.3 1297.34 1165.11 1328.88 NO 10000. 3.590 2 2.0 2.5 1298.3 1297.34 1214.42 1401.71 NO 15000. 3.054 3 2.5 3.4 1004.9 1003.95 1196.70 762.38 NO 20000. 2.650 3 2.5 3.4 1004.9 1003.95 1531.46 973.73 NO 25000. 2.282 3 2.0 2.7 1203.4 1202.43 1864.46 1195.45 NO MAXIMUM 1-HR CONCENTRATION AT OR BEYOND 10. M: 1315. 12.17 1 3.0 3.7 960.0 934.90 307.82 823.85 NO DWASH= MEANS NO CALC MADE (CONC = 0.0) DWASH=NO MEANS NO BUILDING DOWNWASH USED DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X3*LB * * SCREEN DISCRETE DISTANCES * * * TERRAIN HEIGHT OF 0. M ABOVE STACK BASE USED FOR FOLLOWING DISTANCES * DIST CONC U10M USTK MIX HT PLUME SIGMA SIGMA (M) (UG/M*3) STAB (M/S) (M/S) (M) HT (M) Y (M) Z (M) DWASH - - - - - - - - - - 100. 0.000 1 1.0 1.2 2385.7 2384.69 88.18 85.14 NO DWASH= MEANS NO CALC MADE (CONC = 0.0) DWASH=NO MEANS NO BUILDING DOWNWASH USED DWASH=HS MEANS HUBER-SNYDER DOWNWASH USED DWASH=SS MEANS SCHULMAN-SCIRE DOWNWASH USED DWASH=NA MEANS DOWNWASH NOT APPLICABLE, X3*LB * * SUMMARY OF TERRAIN HEIGHTS ENTERED FOR * * SIMPLE ELEVATED TERRAIN PROCEDURE * * TERRAIN DISTANCE RANGE (M