UNFCCC – NAI SOFTWARE Sector: Waste Practical Aspects and Exercises CGE Greenhouse Gas Inventory Hands-on Training Workshop UNFCCC – NAI SOFTWARE Sector: Waste Practical Aspects and Exercises CGE = Consultative Group of Experts on National Communications from Parties not included in Annex I to the Convention NAI Parties = Parties not included in Annex I to the Convention
CONTENT Details on use of the UNFCCC-NAI Software to calculate and report GHG emissions in the Waste sector. Practical exercises (to be solved by the participants after the presentation).
BACKGROUND The decision trees in the IPCC good practice guidance (GPG2000) are used to choose a good practice method that suits national circumstances. The UNFCCC-NAI Software contains, basically, the methods of lesser complexity that countries can use to prepare their inventories. However, in principle, the software can be used to report the estimated emissions independently of the complexity of method used (Tier 2, 3, etc). GPG2000 = Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories
SECTOR: WASTE IPCC Guidelines = Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories
SECTOR: WASTE CH4 Emissions from Solid Waste Disposal SWD = solid waste disposal MSW = municipal solid waste
SECTOR: WASTE CH4 Emissions from Solid Waste Disposal DOC = degradable organic component
SECTOR: WASTE CH4 Emissions from Solid Waste Disposal
SECTOR: WASTE CH4 Emissions from Domestic and Commercial Wastewater and Sludge Handling EF = emission factor BOD = biological oxygen demand
SECTOR: WASTE CH4 Emissions from Domestic and Commercial Wastewater and Sludge Handling COD = chemical oxygen demand BOD = biological oxygen demand Bo = the maximum methane producing capacity (kg CH4/kg BOD)
Degradable organic component Fraction of DOC removed as sludge SECTOR: WASTE Exercise 6.1: CH4 Emissions from Domestic and Commercial Wastewater and Sludge Handling (I) Country A: Year: 2000. Worksheets 6-2s1 to 6-2s4 Data The National Statistics Office has provided the information included in the following table. Population (1000 persons) Degradable organic component Fraction of DOC removed as sludge Methane recovered 18 250.5 15 330 kg BOD/1000 persons/yr 5 000 tonne
SECTOR: WASTE Exercise 6 SECTOR: WASTE Exercise 6.1: CH4 Emissions from Domestic and Commercial Wastewater and Sludge Handling (II) Other Data: Use the following values for the calculation: Wastewater handling system Fraction of wastewater treated by the handling system Methane conversion factor for the handling system Collected (sewered to plant) Lagoons (anaerobic deep) 0.02 0.8 Not specified 0.05 0.75 Uncollected (treated on site) Latrines and septic systems 0.3 0.15 With regular sediment removal
SECTOR: WASTE Exercise 6 SECTOR: WASTE Exercise 6.1: CH4 Emissions from Domestic and Commercial Wastewater and Sludge Handling (III) Tasks Using the UNFCCC-NAI Software: Calculate net CH4 emissions. Verify the emissions report in the Sectoral and Summary Tables. Fill Table 8A (Overview Table) for the self evaluation of quality and completeness. Print the worksheet used, the Sectoral Summary Table and the Overview Table (8A).
SECTOR: WASTE Exercise 6 SECTOR: WASTE Exercise 6.1: CH4 Emissions from Domestic and Commercial Wastewater and Sludge Handling (IV) Steps Open the software and select in the Waste sector Worksheet 6-2s1 Estimation of Organic Wastewater and Sludge. Specify in column A that the estimation is for “all country”. Enter population data in Column B, and DOC in column C. Specify the Fraction of DOC removed as sludge. The software calculates the Total Domestic/Commercial Organic Wastewater.
SECTOR: WASTE Exercise 6 SECTOR: WASTE Exercise 6.1: CH4 Emissions from Domestic and Commercial Wastewater and Sludge Handling (V) Steps Go to Worksheet 6-2s2 and specify in column A the Wastewater Handling Systems used in the country. Enter in column B the Fraction of Wastewater Treated by the Handling Systems and in C the Methane Conversion Factor. Enter in E the Maximum Methane Producing Capacity (0.6 kg CH4/kg BOD). The software calculates the EF. Go to Worksheet 6-2s4 and enter in D the Methane Recovered. The software calculates Net CH4 emissions.
ESTIMATION OF ORGANIC WASTEWATER
ESTIMATION OF EMISSION FACTOR
CH4 EMISSIONS FROM DOMESTIC AND COMMERCIAL WASTEWATER HANDLING
CH4 EMISSIONS FROM DOMESTICA AND COMMERCIAL WASTEWATER HANDLING IN THE SECTORAL REPORT TABLE
CH4 EMISSIONS FROM DOMESTIC AND COMMERCIAL WASTEWATER HANDLING IN THE SUMMARY REPORT TABLE
SECTOR: WASTE CH4 Emissions from Industrial Wastewater and Sludge Handling
SECTOR: WASTE CH4 Emissions from Industrial Wastewater and Sludge Handling
SECTOR: WASTE Indirect N2O Emissions from Human Sewage
SECTOR: WASTE Emissions from Waste Incineration SWDSs = solid waste disposal sites
NEW WORSHEET 6-5S1 INCLUDED IN THE UNFCCC–NAI SOFTWARE FOR CALCULATING EMISSIONS FROM WASTE INCINERATION
SECTOR: WASTE Exercise for self evaluation 1: CH4 from Solid Waste Disposal on Land (I) Country A: Year: 2000. Data The Environment Ministry provided data on solid waste disposal in the country during the year 2000. It also provided results from studies carried out on solid waste characterization. Determine the CH4 emissions from the disposition of solid waste on land using the UNFCCC-NAI Software. Verify in the Sectoral Report Table and the Summary Tables of the Inventory the report of results obtained.
COUNTRY A: YEAR 2000. DATA RELATED WITH SOLID WASTES DISPOSAL SECTOR: WASTE Exercise for self evaluation 1: CH4 from Solid Waste Disposal on Land (II) COUNTRY A: YEAR 2000. DATA RELATED WITH SOLID WASTES DISPOSAL Urban population of the country 8 666 744 persons MSW generation rate 0.68 kg/capita/day Fraction of MSW disposed to SWDSs 1 Proportion of waste for each type of SWDSs Managed 0.7 Unmanaged-shallow 0.3 Fraction of DOC in MSW 0.18 Recovered methane per year (Gg) SWDSs = solid waste disposal sites
SECTOR: WASTE Exercise for self evaluation 1: CH4 from Solid Waste Disposal on Land (III) RESULTS CH4 emissions from solid waste disposal on land 113.73 Gg CH4
Thank you