Study On Scenarios Of Particulate Matter And Greenhouse Gas Reduction Co-benefits In Thermal Power Plant In Tianjin, China

Like many countries, China is trying to balance environmental and global climate change concerns against economic growth. Previous government policies to improve air quality in Tianjin have achieved remarkable outcomes. However, many measures have reached their limits of effectiveness due to the rapidly economic development in China. Recognition of these serious challenges led to the formal announcement of action reduction target control that cut carbon emission40%-45%per unit in GDP by2020in comparison with that of2005by Premier Wen Jiabao in2009. In addition to aggressively pursuing improved air quality, China has joined international efforts to reduce greenhouse gases (GHGs) by attending the United Nations Framework Convention on Climate Change (UNFCCC) in Durban, South Africa Nov.28,2011.More recently, the Chinese government announced a GHG reduction target of cutting17%CO2and16%energy consumption per unit GDP, increasing3.1%,from8.3%to11.4%, non-fossil energy consumption, and reducing total emissions of major pollutants from8%to10%by2015in The General Plan of Save Energy and Reduce Emission in the Twelfth Five-Year Plan. The consensus-building process will be based on a mitigation potential study conducted by key research institutions that will set out three mitigation scenario options for2015. This co-benefits analysis is based on the current price of GDP in Tianjin in2010as the base year and2015as the target year.For China, implementing integrated measures that address both Local Air Pollutant (LAP) and Greenhouse Gas (GHG) is essential to achieving necessary air pollution reductions and preparing for future agreements on climate change. Integrated strategies have been implemented worldwide as cost-benefit mechanisms to reduce LAP and GHG which are co-generated by the combustion of fossil fuels. Previous co-benefit studies have shown that GHG mitigation policies have had a positive effect on regional air quality (Rypdal et al.,2007; Williams,2007; Vuuren et al.,2006), though relatively few studies available document how air quality management affects GHG emissions (Xu and Masui,2009) and how tackling both problems could be optimized. Based on cost effectiveness, this study develops an alternative scenario for emission reduction measures through optimization in order to achieve both air quality improvements and GHG reduction targets at a minimum cost.Based on the status quo of PM10and CO2emission in2010and the presupposed situation in2015, this study assesses the co-benefits of the Local Air Particulate Matter (LAP) reduction plan and Greenhouse Gas (GHG) control plan in coal-fired power industry in Tianjin, China. This co-benefit analysis used the Ambient Least Cost Model (ALC) to estimate PM10and CO2emission reduction and cost, then creating PM10and CO2control technologies inventory. Through ordering the technologies we can find that retrofit elect-baghouse precipitator in300MW units is most cost-benefit in PM10emission reduction in thermal power plant. For CO2emission reduction, CCS-MEA is the most effective option for the existing plant. The correlation of cost-benefit analysis indicated that the Nuclear Power plant was the most cost effective option to reduce PM10and CO2emissions at the same time, but IGCC is a safer choice for Tianjin. The integrated environmental strategy (IES) scenario make it possible to reduce28,095,386t (36.7%) of CO2and35,930.73t (48%) of PM10emissions and cost9.69billion Yuan from2010to2015, which beyond both suggested targets (ST) of PM10and CO2during the Twelfth Five-Year Plan.