【摘要】 根据某大型磷酸—磷铵企业40万t/a硫酸厂SO₂不同转化率下的事故排放影响预测结果,进行了磷酸—磷铵企业SO₂事故排放对植物危害的评价。评价结果表明,在所设定的气象条件下,SO₂转化率为66％、95％、97％时,事故排放的SO₂对敏感植物、中等敏感植物有不同程度的危害影响;但当SO₂转化率提高至99％或99.4％时,SO₂的地面浓度均低于0.26mg/m³,接触SO₂ 8h使任何植物产生伤害的叶片应在5％以下。更多还原

【Abstract】 The impact of SO₂ accidental discharge on plants was assessed based on prediction results of SO₂ with different conversion rate in a four hundred thousand ton sulfur dioxide works attached to a large scale phosphoric acid-diammonium phosphate group. Results showed that SO₂ accidental discharge made various extent of harmful impacts on sensitive and medium sensitive plants in the condition of set climate when the conversion rate of SO₂ was 66%, 95% and 97% respectively.However, when the conversion rate improved up to 99% or 99.4%, SO₂ ground concentration was lower than 0.26 mg/m³ on average, and injured leaves of plants should be less than 5% if the touching time last for 8h.更多还原