GUO Qia.Lack and Correction of DOC Value in IPCC Calculation Model of Sludge Carbon Emission[J].China Water & Wastewater,2020,36(16):49-53.
IPCC污泥碳排放核算模型中DOC取值的不足与修正
- Title:
- Lack and Correction of DOC Value in IPCC Calculation Model of Sludge Carbon Emission
- Keywords:
- sludge treatment and disposal; carbon emission; default value model; degradable organic carbon (DOC)
- 摘要:
- 政府间气候变化专门委员会（IPCC）提出的缺省值模型主要是依据固体废弃物的卫生填埋工艺，而对于不同的污泥处理处置工艺，核算碳排放量时采用该缺省值模型会使计算结果不符合实际情况。为此对污泥处理处置工艺中碳排放核算过程以及参数取值上存在的不足进行了分析研究, 提出了污泥可降解有机碳（DOC）的测定方法及计算公式，并对我国不同地域的几座污水厂污泥处理环节的进泥DOC进行测定。结果显示，我国污泥实际的DOC在10%～20%之间，与IPCC的推荐值（50%）存在较大差异，表明在核算污泥碳排放时不能简单使用IPCC给出的推荐值，参数取值上的不准确性会造成污泥处理处置过程中二氧化碳和甲烷等温室气体排放量计算的不准确性。
- Abstract:
- The default value model proposed by the Intergovernmental Panel on Climate Change (IPCC) was based mainly on the sanitary landfill process of solid waste, and for different sludge treatment and disposal processes, the default value model used in the accounting of carbon emissions will make the calculation results inconsistent with the actual situation. Therefore, the accounting process of carbon emission and the deficiency of parameter value in sludge treatment and disposal process were analyzed and studied, and the determination method and calculation formula of sludge degradable organic carbon (DOC) were put forward, and the sludge DOC of several sewage treatment plants in different regions of China was determined. The results showed that the actual DOC of sludge in China was between 10%-20%, which was quite different from the recommended value of IPCC (50%), which indicated that the recommended value could not be simply used in the accounting of sludge carbon emissions. The inaccuracy of parameter values would cause inaccuracy in the calculation of greenhouse gas emissions such as carbon dioxide and methane during sludge treatment and disposal.
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