浓黑液处置技术升级改造项目运营期大气环境影响预测分析.doc
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1、浓黑液处置技术升级改造项目运营期大气环境影响预测分析1.1气象资料空气污染物在大气中的扩散迁移规律与当地的气象条件密切相关,影响大气扩散的主要气象因素有风向、风速、总云、低云和干球温度等。根据本项目所在区域的气象条件及特征,环评选取市气象站的气象资料作为本项目的气象统计资料。市气象站距离本项目约为11.6km,结合开发区气象特点,市气象站的常规气象资料可以反映开发区所在区域的气候基本特征,本次环评各种气象要素按该站2015年全年每日4时段气象资料统计分析。1.1.1风向根据2015年气象资料对各月、四季及全年风向频率进行统计,具体数值见表1.1-1及图1.1-1。表1.1-1 2015年月、季
2、及全年各风向频率统计表()频率NNNENEENEEESESESSESSSWSWWSWWWNWNWNNWC一月2.425.6510.4811.1314.521.450.002.428.068.877.260.000.000.000.003.2314.52二月2.595.1714.6618.9715.527.761.720.861.0311.381.721.720.001.721.720.862.59三月8.8711.2912.1011.293.232.422.420.001.4511.948.060.810.004.035.654.032.42四月15.001.6713.333.333.338.
3、330.830.001.6711.674.170.831.674.171.678.330.00五月15.329.687.260.811.614.840.812.425.6522.582.420.810.814.8411.298.060.81六月12.504.173.331.674.172.500.001.6713.3314.171.671.672.508.3314.179.170.00七月11.298.068.062.423.232.420.812.429.6817.744.840.811.613.2313.718.061.61八月11.137.267.263.232.423.230.810.
4、819.6820.979.681.610.004.038.064.030.81九月15.8310.837.502.503.331.670.830.831.6725.835.831.670.001.675.008.331.67十月11.298.877.267.267.262.420.811.611.4522.584.840.810.811.618.061.451.61十一月1.673.3311.679.1713.338.334.172.505.0017.505.830.000.001.670.831.673.33十二月0.819.6810.4824.1919.359.684.032.421.61
5、7.264.030.810.000.811.610.003.23春季13.049.2410.875.162.725.161.360.821.2518.754.890.820.824.357.881.791.09夏季13.321.521.252.453.262.720.541.6310.8717.667.071.361.365.1611.967.070.82秋季11.267.6910.441.327.974.121.921.654.4021.985.490.820.273.304.675.492.20冬季1.921.8711.8119.7811.487.971.921.925.2210.714.
6、400.820.000.821.101.371.87全年9.907.589.848.407.584.991.431.501.6917.285.460.960.613.421.425.192.73根据表1.1-1中统计的风向频率结果,可以知道,市2015年期间春季以SSW风为主,占该季节统计数据的18.75%,夏季以SSW风为主,占该季节统计数据的17.66%,秋季以SSW风为主,占该季节统计数据的21.98%,冬季以ENE风为主,占该季节统计数据的19.78%,全年主导风为SSW,次主导风为N,分别占全年统计的数据的17.28%和9.90%。四季中夏季静风频率最低,占统计数据的0.82%,冬季
7、静风频率最高,占统计数据的1.87%,全年静风频率为2.73%。1.1.2风速根据市气象资料对2015年地面风速平均值进行统计,具体数值见表1.1-2及图1.1-2。表1.1-2 2015年月、季及全年各风向风速统计表(m/s)风速NNNENEENEEESESESSESSSWSWWSWWWNWNWNNW平均一月1.171.201.921.851.321.390.001.271.492.342.960.000.000.000.001.051.48二月1.701.182.092.441.492.540.900.601.902.382.301.600.002.403.204.202.03三月2.05
8、2.402.112.191.051.701.000.001.682.802.741.700.003.662.003.222.26四月2.722.282.422.182.635.320.500.002.302.983.661.302.455.462.862.522.97五月2.782.862.162.201.157.100.802.432.503.112.072.701.704.452.842.352.96六月2.502.302.451.451.803.470.001.852.413.183.143.952.433.513.022.772.79七月2.862.332.721.001.801.33
9、1.001.102.402.723.051.800.853.432.662.522.45八月2.452.122.042.051.475.652.001.702.223.102.773.150.003.443.812.202.73九月2.242.102.131.401.433.500.501.901.502.952.972.250.003.743.072.222.49十月1.942.051.801.991.793.502.702.751.502.462.800.801.802.651.962.102.10十一月1.782.051.521.981.611.421.041.231.732.512.9
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