广西松桉年产1万立方米胶合板扩建项目环境影响报告表

建设项目环境影响报告表（污染影响类）项目名称：广西松桉年产1万立方米胶合板扩建项目编制日期：二〇二五年三月目录155281评价目的 195752编制依据 2172693评价等级及影响分析 2121883.1环境空气评价工作等级 2272983.2污染源结果 59773.3大气防护距离 13162413.4污染物排放量核算 1313373.5排气筒高度合理性分析 15244124大气环境影响评价结论 151评价目的根据《建设项目环境影响报告表编制技术指南（污染影响类）》（试行）表1，本项目排放废气甲醛属于有毒有害物质，且项目厂界外500米范围内有居住区，故本项目需设置大气环境影响评价专题。本大气环境影响评价专题的编制，旨在进一步分析说明广西松桉木业有限公司年产1万立方米胶合板扩建项目环境影响报告表中所不能详尽说明的评价区域大气环境的影响问题，为环境保护行政主管部门的决策提供科学依据。2编制依据（1）《环境影响评价技术导则总纲》（HJ2.1-2016）；（2）《环境评价技术导则大气环境》（HJ2.2-2018）；（3）《中华人民共和国环境保护法》（2014年修订，2015年1月1日起实施）；（4）《中华人民共和国大气污染防治法》（2018年10月26日修正实施）；（5）《国务院关于印发大气污染防治行动计划的通知》（国发〔2013〕37号，2013年9月10日印发）；（6）《关于落实大气污染防治行动计划严格环境影响评价准入的通知》（环办〔2014〕30号，2014年3月25日印发）；（7）《建设项目环境影响报告表编制技术指南（污染影响类）》（试行）。3评价等级及影响分析3.1环境空气评价工作等级根据《环境影响评价技术导则大气环境》（HJ2.2-2018）关于大气环境影响评价等级的判定原则，运用导则附录A推荐模型中估算模型分别计算项目污染源的最大环境影响，然后按评价工作分级判据进行分级。根据项目生产工艺分析可知，该项目产生的主要大气污染物为颗粒物（PM10、PM2.5）、SO2、NOX、甲醛、非甲烷总烃，按《环境影响评价技术导则大气环境》（HJ2.2-2018）中的规定，选择主要污染物PM10、PM2.5、SO2、NOX、甲醛、非甲烷总烃为大气影响评价因子，排放参数源强见表3.1-1及表3.1-4，估算模型参数表见3.1-5。表3.1-1正常工况主要废气污染源参数一览表（点源）污染源名称排气筒底部中心坐标(o)排气筒底部海拔高度(m)排气筒参数年排放小时（h）排放工况排放速率（kg/h）经度纬度高度(m)内径(m)温度(℃)流速(m/s)1#排气筒109.46422123.317448108350.38021.412400正常工况PM100.19PM2.50.095SO20.57NOx0.982#排气筒109.46485623.317034108150.62514.742400正常工况甲醛0.018非甲烷总烃0.0073#排气筒109.46473823.316846107150.42522.122400正常工况PM100.324PM2.50.162注：①PM2.5源强按PM1050%计。②本次源强按改扩建后排气筒最终排放量进行估算。表3.1-2非正常工况主要废气污染源参数一览表（点源）污染源名称排气筒底部中心坐标(o)排气筒底部海拔高度(m)排气筒参数年排放小时（h）排放工况排放速率（kg/h）经度纬度高度(m)内径(m)温度(℃)流速(m/s)1#排气筒109.46422123.317448108350.38021.412400正常工况PM104.625PM2.52.313SO20.57NOx0.982#排气筒109.46485623.317034108150.62514.742400正常工况甲醛0.055非甲烷总烃0.0223#排气筒109.46473823.316846107150.42522.122400正常工况PM1016.182PM2.58.091注：①PM2.5源强按PM1050%计。表3.1-3主要废气污染源参数一览表（面源）污染源名称面源起点坐标(o)海拔高度/m面源长度/m面源宽度/m面源有效排放高度/m年排放小时/h排放工况污染物名称排放速率kg/h经度纬度生产车间109.46420723.31766110890.3446.25122400正常工况甲醛0.01非甲烷总烃0.004PM100.101PM2.50.051表3.1-4预测敏感点一览表污染源名称面源起点坐标(o)海拔高度/m经度纬度凤凰村109.45504723.284549102.0大凌屯109.44011323.28713199.0上岩屯109.45011223.304711108.0三鸽109.44906123.28908298.0乌龙109.45708623.315855116.0芳村109.43629323.281987100.0龙扶村109.44513423.317835118.0东龙镇区109.46425323.298956106.0表3.1-5估算模型参数表参数取值城市农村/选项城市/农村农村人口数(城市人口数)/最高环境温度39.6°C最低环境温度-3.3°C土地利用类型农田区域湿度条件潮湿是否考虑地形考虑地形否地形数据分辨率(m)/是否考虑海岸线熏烟考虑海岸线熏烟否海岸线距离/km/海岸线方向/o/按照《环境影响评价技术导则大气环境》（HJ2.2-2018）规定，分别计算每一种污染物的最大地面空气质量浓度占标率Pi（第i个污染物），及第i个污染物的地面空气质量浓度达标准限值10%时所对应的最远距离D10%，其中Pi定义为：式中：Pi－第i个污染物的最大空气质量地面浓度占标率，%；ρi－采用估算模型计算出的第i个污染物的最大1h地面空气质量浓度，μg/m3或mg/m3；ρ0i－第i个污染物的环境空气质量标准，μg/m3或mg/m3；ρ0i一般选用GB3095中1小时平均取样时间的二级标准的浓度限值；对仅有8h平均质量浓度限值、日平均质量浓度限值或年平均质量浓度限值的，可分别按2倍、3倍、6倍折算为1h平均质量浓度限值。评价工作等级的判定依据见表3.1-6。表3.1-6评价工作等级评价工作等级评价工作分级判据一级评价Pmax≧10%二级评价1%≦Pmax<10%三级评价Pmax<1%估算结果见表3.1-7。表3.1-7本项目Pmax和D10%预测结果一览表污染源名称评价因子评价标准(μg/m³)Cmax(μg/m³)Pmax(%)D10%(m)1#排气筒PM10450.02.65080.5891/1#排气筒PM2.5225.01.32540.5891/1#排气筒SO2500.07.95241.5905/1#排气筒NOx250.013.67255.4690/2#排气筒甲醛50.01.74613.4922/2#排气筒NMHC2000.00.73520.0368/3#排气筒PM10450.029.77506.6167/3#排气筒PM2.5225.014.88756.6167/生产车间PM10450.043.00989.5577/生产车间PM2.5225.021.71789.6524/生产车间甲醛50.04.25848.5168/生产车间NMHC2000.01.70340.0852/由表3.1-5可知，Pmax最大值出现为生产车间排放的PM2.5Pmax值为9.6524%，Cmax为21.7178μg/m³。根据《环境影响评价技术导则大气环境》（HJ2.2-2018）分级判据，确定本项目大气环境影响评价工作等级为二级。3.2污染源结果表3.2-1面源预测结果一览表下风向距离m生产车间PM10浓度(μg/m³)PM10占标率(%)PM2.5浓度(μg/m³)PM2.5占标率(%)甲醛浓度(μg/m³)甲醛占标率(%)非甲烷总烃浓度(μg/m³)非甲烷总烃占标率(%)5035.50157.889217.92657.96733.51507.03001.40600.070310042.64839.477421.53539.57124.22268.44521.68900.084520029.99906.666415.14806.73252.97025.94041.18810.059430023.34115.186911.78615.23832.31104.62200.92440.046240020.07684.461510.13784.50571.98783.97560.79510.039850017.13773.80848.65373.84611.69683.39360.67870.033960015.06213.34717.60563.38031.49132.98260.59650.029870013.50773.00176.82073.03141.33742.67480.53500.026780012.29272.73176.20722.75881.21712.43420.48680.024390011.31302.51405.71252.53891.12012.24020.44800.0224100010.50402.33425.30402.35731.04002.08000.41600.020812009.40562.09014.74942.11080.93131.86250.37250.018614008.87921.97324.48361.99270.87911.75830.35170.017616008.40901.86874.24611.88720.83261.66510.33300.016718008.06821.79294.07401.81070.79881.59770.31950.016020007.66971.70443.87281.72130.75941.51880.30380.015225006.81971.51553.44361.53050.67521.35040.27010.013530006.12771.36173.09421.37520.60671.21340.24270.012135005.55281.23402.80391.24620.54981.09960.21990.011040005.06811.12622.55911.13740.50181.00360.20070.010045004.65451.03432.35031.04460.46080.92170.18430.009250004.29810.95512.17030.96460.42550.85110.17020.0085100002.54430.56541.28470.57100.25190.50380.10080.0050110002.38810.53071.20590.53600.23640.47290.09460.0047120002.24850.49971.13540.50460.22260.44520.08900.0045130002.12280.47171.07190.47640.21020.42040.08410.0042140002.00930.44651.01460.45090.19890.39790.07960.0040150001.90840.42410.96360.42830.18900.37790.07560.0038200001.53900.34200.77710.34540.15240.30480.06100.0030250001.30040.28900.65660.29180.12880.25750.05150.0026东龙镇区20.07684.461510.13784.50571.98783.97560.79510.0398双岩村8.06821.79294.07401.81070.79881.59770.31950.0160上岩屯7.66971.70443.87281.72130.75941.51880.30380.0152二龙村6.81971.51553.44361.53050.67521.35040.27010.0135下风向最大浓度43.00989.557721.71789.65244.25848.51681.70340.0852下风向最大浓度出现距离91.091.091.091.091.091.091.091.0D10%最远距离////////表3.2-2正常工况1#排气筒预测结果一览表下风向距离m1#排气筒PM10浓度(μg/m³)PM10占标率(%)PM2.5浓度(μg/m³)PM2.5占标率(%)SO2浓度(μg/m³)SO2占标率(%)NOx浓度(μg/m³)NOx占标率(%)501.84690.41040.92340.41045.54071.10819.52613.81041001.39180.30930.69590.30934.17540.83517.17882.87152002.47550.55011.23770.55017.42651.485312.76845.10733002.62020.58231.31010.58237.86061.572113.51475.40594002.38260.52951.19130.52957.14781.429612.28924.91575002.11360.46971.05680.46976.34081.268210.90174.36076001.87950.41770.93970.41775.63851.12779.69433.87777001.68610.37470.84300.37475.05831.01178.69673.47878001.52710.33940.76350.33944.58130.91637.87663.15069001.40520.31230.70260.31234.21560.84317.24792.899110001.32190.29380.66100.29383.96570.79316.81822.727312001.25350.27860.62680.27863.76050.75216.46542.586214001.16910.25980.58460.25983.50730.70156.03012.412016001.08490.24110.54240.24113.25470.65095.59582.238318001.00680.22370.50340.22373.02040.60415.19302.077220000.93670.20820.46840.20822.81020.56204.83161.932625000.82590.18350.41300.18352.47780.49564.26021.704130000.73710.16380.36860.16382.21140.44233.80201.520835000.66040.14680.33020.14681.98130.39633.40651.362640000.59640.13250.29820.13251.78930.35793.07641.230545000.54320.12070.27160.12071.62960.32592.80181.120750000.49860.11080.24930.11081.49570.29912.57161.0286100000.27540.06120.13770.06120.82620.16521.42050.5682110000.25470.05660.12740.05660.76420.15281.31380.5255120000.23690.05260.11840.05260.71060.14211.22180.4887130000.22130.04920.11060.04920.66390.13281.14140.4566140000.20760.04610.10380.04610.62270.12451.07060.4282150000.19540.04340.09770.04340.58610.11721.00760.4031200000.15350.03410.07670.03410.46040.09210.79160.3167250000.12770.02840.06390.02840.38310.07660.65870.2635东龙镇区2.38260.52951.19130.52957.14781.429612.28924.9157双岩村1.00680.22370.50340.22373.02040.60415.19302.0772上岩屯0.93670.20820.46840.20822.81020.56204.83161.9326二龙村0.82590.18350.41300.18352.47780.49564.26021.7041下风向最大浓度2.65080.58911.32540.58917.95241.590513.67255.4690下风向最大浓度出现距离264.0264.0264.0264.0264.0264.0264.0264.0D10%最远距离////////表3.2-3非正常工况1#排气筒预测结果一览表下风向距离m1#排气筒PM10浓度(μg/m³)PM10占标率(%)PM2.5浓度(μg/m³)PM2.5占标率(%)SO2浓度(μg/m³)SO2占标率(%)NOx浓度(μg/m³)NOx占标率(%)5044.96609.992422.48799.99465.54181.10849.52793.811210033.88507.530016.94627.53164.17610.83527.18002.872020060.270013.393330.141513.39627.42791.485612.77075.108330063.793014.176231.903414.17937.86211.572413.51725.406940058.008012.890729.010312.89357.14911.429812.29144.916650051.458011.435125.734611.43766.34191.268410.90354.361460045.760010.168922.884910.17115.63961.12799.69623.878570041.05009.122220.52949.12425.05911.01188.69823.479380037.17908.262018.59358.26384.58210.91647.87793.151290034.21207.602717.10977.60434.21640.84337.24922.8997100032.18307.151816.09507.15333.96630.79336.81932.7277120030.51706.781615.26186.78303.76100.75226.46632.5865140028.46506.325614.23566.32693.50810.70166.03152.4126160026.41305.869613.20945.87083.25520.65105.59672.2387180024.51305.447312.25925.44853.02110.60425.19412.0776200022.80605.068011.40555.06912.81070.56214.83241.9330250020.10904.468710.05674.46962.47830.49574.26091.7044300017.94703.98828.97543.98912.21180.44243.80281.5211350016.08003.57338.04173.57411.98180.39643.40721.3629400014.52103.22697.26213.22761.78960.35793.07691.2308450013.22502.93896.61392.93951.62990.32602.80231.1209500012.13902.69766.07082.69811.49600.29922.57221.0289100006.70521.49003.35331.49040.82640.16531.42080.5683110006.20161.37813.10151.37840.76430.15291.31410.5256120005.76711.28162.88421.28190.71080.14221.22200.4888130005.38781.19732.69451.19750.66400.13281.14160.4567140005.05341.12302.52721.12320.62280.12461.07080.4283150004.75621.05692.37861.05720.58620.11721.00780.4031200003.73680.83041.86880.83060.46050.09210.79180.3167250003.10940.69101.55500.69110.38320.07660.65890.2635东龙镇区58.008012.890729.010312.89357.14911.429812.29144.9166双岩村24.51305.447312.25925.44853.02110.60425.19412.0776上岩屯22.80605.068011.40555.06912.81070.56214.83241.9330二龙村20.10904.468710.05674.46962.47830.49574.26091.7044下风向最大浓度64.536014.341332.275014.34447.95361.590713.67475.4699下风向最大浓度出现距离264.0264.0264.0264.0264.0264.0264.0264.0D10%最远距离625.0625.0625.0625.0////表3.2-4正常工况2#排气筒预测结果一览表下风向距离m2#排气筒甲醛浓度(μg/m³)甲醛占标率(%)非甲烷总烃浓度(μg/m³)非甲烷总烃占标率(%)500.47540.95090.20020.01001001.12262.24520.47270.02362001.74613.49220.73520.03683001.51043.02080.63600.03184001.20222.40440.50620.02535000.96511.93020.40640.02036000.93201.86400.39240.01967000.88791.77580.37380.01878000.83221.66440.35040.01759000.77451.54910.32610.016310000.71901.43810.30280.015112000.65251.30500.27470.013714000.59521.19050.25060.012516000.54121.08240.22790.011418000.49260.98510.20740.010420000.44960.89910.18930.009525000.38680.77360.16290.008130000.33770.67550.14220.007135000.32140.64270.13530.006840000.30310.60620.12760.006445000.28420.56840.11970.006050000.26580.53170.11190.0056100000.16150.32290.06800.0034110000.14710.29420.06190.0031120000.13430.26860.05660.0028130000.12410.24830.05230.0026140000.11700.23400.04930.0025150000.11160.22330.04700.0024200000.08960.17930.03770.0019250000.07290.14580.03070.0015东龙镇区1.20222.40440.50620.0253双岩村0.49260.98510.20740.0104上岩屯0.44960.89910.18930.0095二龙村0.38680.77360.16290.0081下风向最大浓度1.74613.49220.73520.0368下风向最大浓度出现距离201.0201.0201.0201.0D10%最远距离////表3.2-5非正常工况2#排气筒预测结果一览表下风向距离m2#排气筒甲醛浓度(μg/m³)甲醛占标率(%)非甲烷总烃浓度(μg/m³)非甲烷总烃占标率(%)501.20082.40160.47530.02381002.83535.67061.12230.05612004.40998.81981.74560.08733003.81477.62941.51000.07554003.03626.07241.20180.06015002.43744.87480.96480.04826002.35394.70780.93180.04667002.24244.48480.88760.04448002.10184.20360.83200.04169001.95613.91220.77430.038710001.81603.63200.71880.035912001.64793.29580.65230.032614001.50333.00660.59510.029816001.36692.73380.54110.027118001.24402.48800.49240.024620001.13542.27080.44940.022525000.97691.95380.38670.019330000.85301.70600.33760.016935000.81161.62330.32130.016140000.76551.53090.30300.015145000.71771.43540.28410.014250000.67141.34280.26580.0133100000.40780.81550.16140.0081110000.37150.74310.14710.0074120000.33920.67850.13430.0067130000.31350.62700.12410.0062140000.29550.59090.11700.0058150000.28190.56390.11160.0056200000.22640.45280.08960.0045250000.18410.36810.07290.0036东龙镇区3.03626.07241.20180.0601双岩村1.24402.48800.49240.0246上岩屯1.13542.27080.44940.0225二龙村0.97691.95380.38670.0193下风向最大浓度4.41008.82001.74560.0873下风向最大浓度出现距离201.0201.0201.0201.0D10%最远距离////表3.2-6正常工况3#排气筒预测结果一览表下风向距离m3#排气筒PM10浓度(μg/m³)PM10占标率(%)PM2.5浓度(μg/m³)PM2.5占标率(%)508.10301.80074.05151.800710019.14304.25409.57154.254020029.77406.616414.88706.616430025.75505.723312.87755.723340020.50004.555610.25004.555650016.45703.65718.22853.657160015.89303.53187.94653.531870015.14003.36447.57003.364480014.19103.15367.09553.153690013.20702.93496.60352.9349100012.26102.72476.13052.7247120011.12602.47245.56302.4724140010.15002.25565.07502.255616009.22872.05084.61432.050818008.39921.86654.19961.866520007.66561.70353.83281.703525006.59581.46573.29791.465730005.75921.27982.87961.279835005.47991.21782.73991.217840005.16821.14852.58411.148545004.84581.07682.42291.076850004.53301.00732.26651.0073100002.75300.61181.37650.6118110002.50860.55751.25430.5575120002.29040.50901.14520.5090130002.11660.47041.05830.4704140001.99490.44330.99740.4433150001.90370.42300.95180.4230200001.52840.33960.76420.3396250001.24270.27620.62130.2762东龙镇区20.50004.555610.25004.5556双岩村8.39921.86654.19961.8665上岩屯7.66561.70353.83281.7035二龙村6.59581.46573.29791.4657下风向最大浓度29.77506.616714.88756.6167下风向最大浓度出现距离201.0201.0201.0201.0D10%最远距离////表3.2-7非正常工况3#排气筒预测结果一览表下风向距离m3#排气筒PM10浓度(μg/m³)PM10占标率(%)PM2.5浓度(μg/m³)PM2.5占标率(%)50404.700089.9333202.350089.9333100956.0900212.4644478.0450212.46442001487.0000330.4444743.5000330.44443001286.3000285.8444643.1500285.84444001023.8000227.5111511.9000227.5111500821.9200182.6489410.9600182.6489600793.7500176.3889396.8750176.3889700756.1700168.0378378.0850168.0378800708.7600157.5022354.3800157.5022900659.6200146.5822329.8100146.58221000612.3800136.0844306.1900136.08441200555.6900123.4867277.8450123.48671400506.9200112.6489253.4600112.64891600460.9200102.4267230.4600102.42671800419.490093.2200209.745093.22002000382.860085.0800191.430085.08002500329.420073.2044164.710073.20443000287.640063.9200143.820063.92003500273.690060.8200136.845060.82004000258.120057.3600129.060057.36004500242.020053.7822121.010053.78225000226.400050.3111113.200050.311110000137.500030.555668.750030.555611000125.290027.842262.645027.842212000114.390025.420057.195025.420013000105.710023.491152.855023.49111400099.636022.141349.818022077021.128247.538521.12822000076.337016.963838.168516.96382500062.065013.792231.032513.7922东龙镇区1023.8000227.5111511.9000227.5111双岩村419.490093.2200209.745093.2200上岩屯382.860085.0800191.430085.0800二龙村329.420073.2044164.710073.2044下风向最大浓度出现距离201.0201.0201.0201.0D10%最远距离>25000>25000>25000>25000根据表3.2-1~表3.2-7可知，正常工况下PM10、PM2.5下风向最大浓度值小于《环境空气质量标准》（GB3095-2012）二级限值要求；甲醛下风向最大浓度值小于《环境影响评价技术导则大气环境》（HJ2.2-2018）附录D限值要求；非甲烷总烃下风向最大浓度值小于《大气污染物综合排放标准详解》（国家环境保护局科技标准司）中的非甲烷总烃环境质量标准值2mg/m3限值要求。1#排气筒排放的污染物PM10、PM2.5、SO2及NOx下风向最大浓度值均小于《环境空气质量标准》（GB3095-2012）中的限值要求，下风向最大浓度出现距离为264m，且占标率均低于10%；2#排气筒排放的污染物甲醛下风向最大浓度值小于《环境影响评价技术导则大气环境》（HJ2.2-2018）附录D中的标准值，非甲烷总烃下风向最大浓度值小于《大气污染物综合排放标准详解》（国家环境保护局科技标准司）中的非甲烷总烃环境质量标准值2mg/m3限值要求，下风向最大浓度出现距离为201m，且占标率均低于10%；3#排气筒排放的污染物PM10、PM2.5下风向最大浓度值小于《环境空气质量标准》（GB3095-2012）中的标准限值，下风向最大浓度出现距离为201m，且占标率均低于10%；本项目大气环境保护目标均不在污染物排放的最大落地浓度距离处，且占标率均低于10%，本项目对环境保护目标影响不大。正常工况下下风向东龙镇区、双岩村等主要大气环境保护目标各污染物占标率均较小，对敏感目标影响不大。非正常工况下，本项目各污染物排放浓度、排放速率，即预测占标率增加，对大气环境和敏感目标有一定影响，要求加强污染治理设施的检查，确保设施正常运行，污染物达标排放。3.3大气防护距离根据《环境影响评价技术导则大气环境》（HJ2.2-2018），大气评价等级为二级，项目厂界及厂界外大气污染物贡献值均未超过相应环境质量浓度限值，无需设置大气防护距离，因此本项目不设置大气环境防护距离。3.4污染物排放量核算1、有组织排放量核算根据《排污单位自行监测技术指南总则》（HJ819-2017）、《排污许可证申请与核发技术规范人造板工业》（HJ1032-2019）及《排污许可证申请与核发技术规范锅炉》（HJ953--2018），本项目1#~3#排气筒均为一般排放口。参照《环境影响评价技术导则大气环境》（HJ2.2-2018）附录C中的表C.31，大气污染物有组织排放量核算详见下表3.4-1。表3.4-1大气污染物有组织排放量核算表序号排污口编号污染物核算排放浓度/（mg/m3）核算排放速率/（kg/h）核算年排放量/（t/a）一般排放口11#排气筒颗粒物33.970.190.444SO2104.970.571.372NOx180.030.982.35322#排气筒甲醛1.280.0190.0456非甲烷总烃0.510.0080.018233#排气筒颗粒物32.40.3240.777有组织排放总计有组织排放总计颗粒物1.221SO21.372NOx2.353甲醛0.0456非甲烷总烃0.0182参照《环境影响评价技术导则大气环境》（HJ2.2-2018）附录C中的表C.32，大气污染物无组织排放量核算详见下表3.4-2。表3.4-2大气污染物无组织排放量核算表排放口编号产污环节污染物主要污染防治措施国家或地方污染物排放标准年排放量/（t/a）标准名称浓度限值生产车间胶合板生产线甲醛半封闭车间、加强车间机械排风大气污染物综合排放标准》（GB16297-1996）表2无组织排放监控浓度限值0.2mg/m30.024非甲烷总烃4mg/m30.01颗粒物1mg/m30.243无组织排放总计无组织排放总计甲醛0.024t/a非甲烷总烃0.01t/a颗粒物0.243t/a2、项目大气污染物年排放量核算参照《环境影响评价技术导则大气环境》（HJ2.2-2018）附录C中的表C.33，项目大气污染物年排放量核算详见下表3.4-3。表3.4-3大气污染物年排放量核算表序号污染物年排放量/（t/a）1颗粒物1.4642SO21.3723NOx2.3534甲醛0.06965非甲烷总烃0.0283、非正常排放量核算非正常情况一般指处理设施效率降低、设备检修、工艺设备运转异常等生产设施非正常工况或污染治理设施非正常状况。本项目设备检修时停止生产，不会产生废气，工艺设备运转异常对废气排放影响不明显，因此本项目非正常排放仅考虑污染治理设施达不到应有效率的这一种情况下排放。根据本项目的废气污染治理设施与预防措施实际情况，设定废气处理设施的处理效率为50%时（除SO2、NOx外），为本项目污染治理设施达不到应有效率的非正常排放情形。参照《环境影响评价技术导则大气环境》（HJ2.2-2018）附录C中的表C.34，核