Selection Of Index System For Accounting Carbon Emission From Dyeing Mills With Comprehensive Evaluation And Its Practical Validation

In recent years, climate change and carbon reduction have become the focus of global attention. Dyeing and finishing industry consumes a lot of energy and textile chemicals, it is one of the largest greenhouse gas sources. Accounting of greenhouse gases emissions is the foundation and premise for developing carbon reduction strategies. Therefore, the research of accounting methods of carbon emissions from dyeing and finishing enterprises is necessary.The applicability and convenience of the accounting method is very important for enterprises to carry out it with a low cost. In this paper, the analytical hierarchy process (AHP), as the comprehensive evaluation method, is used to evaluate the important level of index. In order to develop the index system, a lot of literatures about comprehensive evaluation index system and methods have been reviewed. Lots of literatures, standards and specifications on carbon footprint and carbon emission have been consulted and analyzed. At the same time, relevant expert opinions have been collected. According to the conclusion of the AHP evaluation, accounting of carbon emission from dyeing plants have been divided into three scopes: production related emission, technology related emission and product related emission.In this paper, the evaluation conclusion combining with the research data from a dyeing and finishing enterprise have been used to the production related emission within a year. Through the combination of laboratory experiments and practical production research, carbon emission difference between the cold pad batch dyeing technology and the conventional dyeing process have been accounted. Through the accounting result, production related carbon emissions from the researched dyeing plant up to89788023.8kgCO2e in a year. Carbon emission in the top two is wastewater treatment process and steam consumption, respectively, accounting for64.3%and25.6%of total production related emission. Compared with the conventional dyeing process, the cold pad batch dyeing process reduces the emission of2220.4352kgCO2e per ten thousand meters product. Distribution of carbon emission reductions in the steam consumption, water consumption, electricity consumption, the main salt consumption and waste water treatment are2089.4491kgCO2e,0.6223kgCO2e,18.0871kgCO2e,69.1517kgCO2e and4.3125kgCO2e.