摘要
Abstract
To study the standards and methods for greenhouse gas(GHG)emission accounting applicable to starch processing enterprises,the paper adopted domestic,international,and local guidelines and specifications for GHG emission accounting.It reviewed the production processes and characteristics of the starch industry,identified accounting boundaries,sources of GHG emissions,and types of gases.The accounting boundaries included emissions from fuel combustion,process emissions(exhaust gases and wastewater treatment),and emissions generated by net purchases of electricity and heat.The paper refined the calculation method for CH4 emissions corresponding to sludge removal in the industrial wastewater treatment process and included N2O in the scope of accounting.It also considered the reduction in CH4 emissions due to the recovery and combustion of biogas,as well as the emissions from desulfurization and denitrification processes.To avoid double counting,CO2 emissions from reagents other than carbonates were not considered.The emission factor for electricity should preferably use the average emission factor of the provincial grid,to which the enterprise is connected,deducting the consumption of non-fossil fuel electricity.Moreover,the accounting was conducted holistically without distinguishing between production areas and living and office areas.Therefore,it is found that precise accounting of GHG emissions for starch processing enterprises is crucial for emission reduction and transformation.关键词
淀粉加工/温室气体/碳核算/碳减排Key words
starch processing/greenhouse gases/carbon accounting/carbon emission reduction
