变电站LID设施的雨洪调控碳排放强度研究

Carbon emission intensity of rainwater regulation for LID facilities in substation

为了定量分析LID设施单位雨洪调控能力的碳排放量,提出了生命周期径流总量控制量的碳排放强度和碳减排效益的概念,并以甘肃省某新建750kV变电站为对象进行了研究。结果表明,生物滞留设施和透水铺装的组合方案的年径流总量控制率为85.11%,5年重现期下的径流峰值削减率为70%,对变电站雨水有着较好的径流总量控制以及径流峰值削减作用。30年生命周期碳排放强度为0.94kg CO_(2)/m^(3)径流总量控制量,说明LID设施在30年生命周期内控制的径流量越多,产生的碳排放量越少。碳减排效益为0.34kgCO_(2)/元,具有较好的经济价值。

To quantitatively analyze the carbon emissions per unit of stormwater regulation capacity of LID facilities,the concepts of carbon emission intensity of life cycle runoff control volume and carbon reduction benefit were proposed and studied for a new 75okV substation in Gansu Province.The results show that the combined scheme of bioretention and permeable paving has a volume capture ratio of annual rainfall of 85.11%and the peak runoff reduction rate of 70%under the 5-year return period,which has a better total runoff control as well as a better peak runoff reduction effect on the stormwater of the substation.The carbon emission intensity of the LID facilities during its 30-year lifecycle is 0.94 kgCO_(2)/m^(3) total runoff control volume,which indicates that the more runoff the LID facilities control over their 30-year life cycle,the less carbon emissions it produces.The carbon sink of the facilities in the 30-year life cycle can neutralize the carbon emissions in the construction phase.The carbon reduction benefit is O.34 kgCO_(2)/yuan,which has an excellent economic value.