Annex 1: Mapping Tables

ANNEX 1

MAPPING TABLES

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

A1.1

Volume 5: Waste

Contents
Annex 1

A1.2

Relating 2019 Refinement to the 2006 IPCC Guidelines ..............................................................A1.3

Chapter 2

Waste generation, composition and management data...........................................................A1.3

Chapter 3

Solid waste disposal ...............................................................................................................A1.5

Chapter 5

Incineration and open burning of waste .................................................................................A1.8

Chapter 6

Wastewater treatment and discharge ....................................................................................A1.10

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

Annex 1: Mapping Tables

Annex 1 Relating 2019 Refinement to the 2006 IPCC Guidelines
This annex provides a road map for relating sections, equations, tables, figures and boxes in the 2019 Refinement
to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories.
Type of Refinement: U – Update, NG – New Guidance, NR – No Refinement, R – Removed

CHAPTER 2 WASTE GENERATI ON, COMPOSITION AND MANAGEMENTDATAThis chapter presents an update of waste generation, composition and management data chapter of the 2006
IPCC Guidelines. These refinements provide updated default waste generation and treatment data for the year
2010 using UN Classification at country and regional level. The updated waste composition in line with the 2006
IPCC Guidelines are presented with the additional components of garden waste and nappies. Definition ofsludge and estimation of degradable organic carbon (DOC) values are clarified. Default values of carbon content,
nitrogen content and DOC of domestic and industrial sludge are presented. Guidance on DOC of sludge is also
provided. New Annex 2A.2 with default values of waste composition by country and regional average isprovided.

Sections•

Additional introduction has been provided in the introduction part to explain the refinement of this chapter.

•

Updated regional default values of waste generation rate and their treatment presented in Section 2.2.1.
Guidance on estimation of waste generation rate is clarified.

•

Section 2.3.1 provides updated waste composition (in percentage) data. Guidance for countries without data
for nappies and garden and yard waste is provided.

•

Updated definition of sludge and default values of carbon content, nitrogen content and DOC of sludge from
specific industry and domestic sludge and their uncertainties are provided. Clarification on domestic sludge
in terms of treated sludge and untreated sludge including their default values are presented.

•

New Annex 2A.2 has been added to provide waste composition default values by country and regional
averages.

Section Title

Type ofRefinement

2006 IPCC
Guidelines
Section Number

2019
Refinement
Section Number

Introduction

U

2.1

2.1

Municipal Solid Waste (MSW): Default data

U

2.2.1

2.2.1

Municipal Solid Waste (MSW): Country specific data

NR

2.2.1

2.2.1

Municipal Solid Waste (MSW): Data from waste
stream analysis

NR

2.2.1

2.2.1

Municipal Solid Waste (MSW)

U

2.3.1

2.3.1

Sludge

U/NG

2.3.2

2.3.2

Annex 2A.1 (Updated) MSW Generation andManagement Data – by country and regional averages

U

2A.1

2A.1

Annex 2A.2 (New) Waste Composition – by country
and regional averages

NG

-

2A.2

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

A1.3

Volume 5: Waste

Tables•Table 2.1 has been updated to present waste generation rate and treatment data by regional defaults to themost comparative year of 2010. New column of “Fraction of MSW open dumped” is added in the table toreflect available data on MSW open dumped in some regions.

•

Table 2.3 (Updated) presents the update of waste composition by regional defaults with new components ofgarden waste and nappies.

•

Table 2.4a (New) has been added to present default values and uncertainties of carbon content, nitrogencontent and DOC of domestic and industrial sludge and provides new default value for domestic sewage
treated sludge.

•

Table 2A.1 (Updated) presents waste generation and management data for some countries for which data
were available to update applicable data for the year 2010. List of countries are according to UN
classification by region. Table 2A.1 (Updated) also provides default values of regional averages derived
from countries in the region presented in Table 2A.1 (Updated).

•

Table 2A.2 (New) presents waste composition by country and region. Data on nappies, and garden and yard
waste are provided to reflect the up-to-date waste composition.

Table Title

Type ofRefinement

2006 IPCC
Guidelines
Table Number

2019
Refinement
Table Number

MSW generation and treatment data ‒ regional defaults

U

2.1

2.1

MSW composition data by percentage ‒regional
defaults

U

2.3

2.3

Default value and uncertainty of carbon content,
nitrogen content and DOC of domestic and industrial
sludge (percent of dry matter)

NG

-

2.4a

MSW generation and management data ‒ by country
and regional averages

U

2A.1

2A.1

Waste composition by country and regional averages

NG

-

2A.2

Box Title

Type ofRefinement

2006 IPCC
Guidelines Box
Number

2019
Refinement Box
NumberExample of activity data collection for estimation ofemissions from solid waste treatment based on waste
stream analysis by waste type

NR

2.1

2.1

Boxes
•

Box in this chapter is not refined.

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2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

Annex 1: Mapping Tables

CHAPTER 3 SOLID WASTE DISPOSAL
This chapter presents an update of the Solid Waste Disposal chapter of the 2006 IPCC Guidelines. These
refinements provide, to the extent of current knowledge, new categories of SWDS including semi-aerobic(managed poorly) and active aeration (well managed and poorly managed). MCF values for these new categories
are provided. Default data on fraction of DOCf by types of waste are updated. Guidance on estimation of DOC
lost with leachate from SWDS is provided. The refinement also provides the information on N2O from SWDS aswell as information on the estimation of CH4 emissions using measured data in the appendices. The IPCC Waste
Model has been updated accordingly to the refinement.

Sections•

Section 3.2.1.1 provides information on aerobic management of SWDS including information on calculationof MCF for new categories of aerobic management.

•

Section 3.2.3 provides additional information on DOCf including updated default values and theiruncertainties by different type waste (less, moderately and highly decomposable). Information on MCF
including default MCF values and definition for new categories of aerobic management as well as
information on effect of DOC leaching from SWDS are also provided.

•

Additional information of N2O emission from SWDS is provided in the Appendix 3A.1.

•

Information of estimation of CH4 emission from active aeration SWDS using locally available measured
data are provided in the Appendix 3A.2.

Section Title

Type ofRefinement

2006 IPCC
Guidelines
Section Number

2019
Refinement
Section NumberFirst Order DecayNG

3.2.1.1

3.2.1.1

Methane emissionsNR

3.2.1.1

3.2.1.1

Methane generation

NR

3.2.1.1

3.2.1.1

First order decay basics

NR

3.2.1.1

3.2.1.1

Simple FOD spreadsheet modelNR

3.2.1.1

3.2.1.1

CH4 generated from decomposable DDOCm

NR

3.2.1.1

3.2.1.1

Simple FOD Spreadsheet ModelNR

3.2.1.1

3.2.1.1

Modelling different geographical or climate regionsNR

3.2.1.1

3.2.1.1

Dealing with different waste categories

NR

3.2.1.1

3.2.1.1

Adjusting waste composition at generation to waste
composition at SWDS

NR

3.2.1.1

3.2.1.1

Open burning of Waste at SWDS

NR

3.2.1.1

3.2.1.1

Choice of emission factors and parameters: Degradableorganic carbon (DOC)

NR

3.2.3

3.2.3

Choice of emission factors and parameters: Fraction of
degradable organic carbon which decomposes (DOCf)

U/NG

3.2.3

3.2.3

Choice of emission factors and parameters: Methanecorrection factor (MCF)

U/NG

3.2.3

3.2.3

Choice of emission factors and parameters: Fraction of
CH4 in generated landfill gas (F)

NR

3.2.3

3.2.3

Choice of emission factors and parameters: Oxidation
factor (OX)

NR

3.2.3

3.2.3

Choice of emission factors and parameters: Half-life

NR

3.2.3

3.2.3

Choice of emission factors and parameters: Methane
recovery

NR

3.2.3

3.2.3

Choice of emission factors and parameters: Delay time

NR

3.2.3

3.2.3

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

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Volume 5: Waste

Section Title

Type ofRefinement

2006 IPCC
Guidelines
Section Number

2019
Refinement
Section Number

Uncertainties associated with parametersU

3.7.2.2.

3.7.2.2

Appendix 3A.1 Information on Nitrous Oxide Emission
from Solid Waste Disposal Site

NG

-

3A.1

Appendix 3A.2 Information on Estimation of CH4
Emission from Solid Waste Disposal Site Managed by
Active Aeration Using Locally Available Measured
Data

NG

-

3A.2

Equations•

Equation 3Ap.1 was introduced to inform the estimation of CH4 emission from active aeration SWDS using
locally measured data.

Equation Title

Type ofRefinement

2006 IPCC
Guidelines
Equation
Number2019 Refinement
Equation
NumberCH4 emission from SWDS

NR

3.1

3.1

Decomposable DOC from waste disposal data

NR

3.2

3.2

Transformation from DDOCm to Lo

NR

3.3

3.3

DDOCm accumulated in SWDS at the end of year T

NR

3.4

3.4

DDOCm decomposed at the end of year T

NR

3.5

3.5

CH4 generated from decayed DDOCm

NR

3.6

3.6

Estimates DOC using default carbon content values

NR

3.7

3.7

MCF for managed SWDS (active aeration)

NG

-

3Ap.1

Tables•Table 3.0 (New) provides DOCf for waste types with different degree of decomposition (less, moderately
and highly decomposable).

•

Table 3.1 (Updated) was introduced to update MCF by SWDS classification. New MCF values for managed
poorly semi-aerobic as well as managed well and managed poorly active aeration landfills are presented.

•

Table 3.5 (Updated) updates uncertainties associated with the default DOCf and MCF values.

A1.6

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

Annex 1: Mapping Tables

Type ofRefinement

2006 IPCC
Guidelines
Table Number

2019 Refinement
Table Number

NG

-

3.0

SWDS classification and Methane Correction Factors
(MCF)

U/NG

3.1

3.1

Oxidation factor (OX) for SWDS

NR

3.2

3.2

Recommended default methane generation rate (k)values under Tier 1

NR

3.3

3.3

Recommended default half-life (t1/2) values (yr) under
Tier 1

NR

3.4

3.4

Estimates of uncertainties associated with the default
activity data and parameters in the FOD method forCH4 emissions from SWDS

U

3.5

3.5

Table Title
Fraction of degradable organic carbon
decomposes (DOCf) for different waste types

which

Boxes
•

Box 3.0a (New)provides definition of aerobic active management of SWDS and information on calculationof MCF for different types of aerobic SWDS including managed poorly semi-aerobic, managed well active
aeration and managed poorly active aeration.

•

Box 3.0b (New) presents information on effect of DOC leachate from SWDS.

Box Title

Type ofRefinement

2006 IPCC
Guidelines Box
Number2019 Refinement
Box Number

Information on calculation of MCF for new category of
aerobic management of SWDS (Managed poorly-semiaerobic, Managed well-active aeration, Managed
poorly-active aeration)

NG

-

3.0a

Information on effect of DOC leaching from SWDS

NG

-

3.0b

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

A1.7

Volume 5: Waste

CHAPTER 5 I NCI NERATION AND OPEN BURNI NG OF WASTE
This chapter presents an update of Incineration and Open Burning of Waste chapter of the 2006 IPCC Guidelines.
These refinements present updated information on definition of thermal technology including pyrolysis,
gasification and plasma to guide understanding of thermal technology. The refinements provide, to the current
knowledge, CH4 and N2O emission factors by operation condition and technologies of specific plant. Guidanceon reporting of emission is also provided. The default value of oxidation factor in percent of carbon input of
MSW open burning is updated. To be consistent with updated information on sludge in Chapter 2, carbon
content of sewage sludge was also updated.

Sections•

Section 5.1 provides definition of and information on pyrolysis, gasification and plasma technology.

•

Section 5.4.1.3 presents an updated oxidation factor of MSW open burning•

Sections 5.4.2 and 5.4.3 provide default emission factors of CH4 and N2O for pyrolysis-melting andgasification-melting for specific plant types.

Section Title

Type ofRefinement

2006 IPCC
Guidelines
Section Number

2019 Refinement
Section Number

Introduction

U/NG

5.1

5.1

Methodological issues

U

5.2

5.2

Choice of emission factor

NR

5.4

5.4

CO2 emission factors

U

5.4.1

5.4.1

Oxidation factor

U

5.4.1.3.

5.4.1.3

CH4 emission factor

U/NG

5.4.2

5.4.2

N2O emission factor

U/NG

5.4.3

5.4.3

Tables•Table 5.2 was updated to provide updated oxidation factor of MSW open burning and carbon content ofdomestic sludge.

•

Table 5.3a (New) presents new default CH4 emission factor by wet weight of specific pyrolysis andgasification plant.

•

Table 5.4a (New) presents new default N2O emission factor by wet weight of specific pyrolysis andgasification plant.

•
Table Title

Type ofRefinement

2006 IPCC
Guidelines
Table Number

2019 Refinement
Table Number

Default data for CO2 emission factors for incinerationand open burning of waste

U

5.2

5.2

CH4 emission factors for incineration of MSW

NR

5.3

5.3

CH4 emission factors for pyrolysis-melting andgasification-melting plant of MSW

NG

-

5.3a

N2O emission factors for incineration of MSW

NR

5.4

5.4

N2O emission factor for pyrolysis-melting andgasification-melting plant of MSW

NG

-

5.4a

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2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

Annex 1: Mapping Tables

Boxes
•

Box 5.0a (New) was introduced to present the basic information on pyrolysis including process andemission.

•Box 5.0b (New) was introduced to present the basic information on gasification including process andemission.

•Box 5.0c (New) was introduced to present the basic information on plasma technology including process
and emission•

Box 5.2 (New) presents the information on CH4 emission from pyrolysis and gasification at laboratory scale
to inform dependency on some process factors including types of technology and operation condition related
to emission.

•Box 5.3 (New) was introduced to guide the understanding of combined process.

Box Title

Type ofRefinement

2006 IPCC
Guidelines Box
Number2019 Refinement
Box Number

Pyrolysis

NG

-

5.0a

Gasification

NG

-

5.0b

Plasma

NG

-

5.0c

Information of CH4 emission factors in laboratory scale

NG

-

5.2

Combined system

NG

-

5.3

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

A1.9

Volume 5: Waste

CHAPTER 6 WASTEWATER TREATMENT AND DISCHARGEThis chapter presents an update of the Wastewater Treatment and Discharge chapter of the 2006 IPCC
Guidelines. The refinements laid out in this chapter provide clarity over how to apply the 2006 IPCC Guidelinesand definitions of treatment systems presented and introduce new and improved default values and emission
factors based on further scientific research into the mechanisms associated with GHG emissions fromwastewater treatment (including sludge treatment that occurs within the WWTP). In addition, these refinements
present an updated section on N2O emissions to better address emissions from domestic wastewater, including
centralised treatment plants, and to include emissions from industrial wastewater.

Sections•

New subsections have been added to the Introduction to provide a discussion of technical topics related to
new guidance presented in the chapter.

•

Sections that discuss CH4 emissions from domestic and industrial wastewater, as well as N2O emissions
from domestic wastewater have been updated to reflect the refinements presented throughout the chapter.

•

A new section, Section 6.4, has been added to provide new guidance on estimating N2O emissions fromindustrial wastewater.

•

A series of annexes have been included to provide additional details related to new or revised emission
factors and default activity data.

•

An appendix has been added to provide a discussion of non-biogemic CO2 emissions from wastewater
treatment and discharge.

Section Title

Type ofRefinement

2006 IPCC
Guidelines
Section Number

2019 Refinement
Section Number

Introduction

U

6.1

6.1

Centralised treatment systems

NG

-

6.1.1

Decentralised treatment systems of domestic
wastewater (onsite sanitation)

NG

-

6.1.2

Emissions from receiving waters

NG

-

6.1.3

Changes compared to 1996 Guidelines and Good
Practice Guidance

U (only Section
number)

6.1.1

6.1.4

Changes compared to 2006 IPCC Guidelines

NG

-

6.1.5

Methodological issues

U

6.2.1

6.2.1

Choice of method (CH4 emissions from domestic
wastewater)U, NG

6.2.2.1

6.2.2.1

Choice of emission factors (CH4 emissions fromdomestic wastewater)U

6.2.2.2

6.2.2.2

Choice of activity data (CH4 emissions from domestic
wastewater)U, NG

6.2.2.3

6.2.2.3

Uncertainties (CH4 emissions from domestic
wastewater)U

6.2.2.5

6.2.2.5

Choice of method (CH4 emissions from industrial
wastewater)U

6.2.3.1

6.2.3.1

Choice of emission factors (CH4 emissions fromindustrial wastewater)U

6.2.3.2

6.2.3.2

Nitrous oxide emissions from domestic wastewater

U, NG

6.3

6.3

Methodological issues (N2O emissions from domestic
wastewater)

U, NG

6.3.1

6.3.1

Choice of method (N2O emissions from domestic
wastewater)U, NG

6.3.1.1

6.3.1.1

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2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

Annex 1: Mapping Tables

Section Title

Type ofRefinement

2006 IPCC
Guidelines
Section Number

2019 Refinement
Section Number

Choice of emission factors (N2O emissions fromdomestic wastewater)U, NG

6.3.1.2

6.3.1.2

Choice of activity data (N2O emissions from domestic
wastewater)U, NG

6.3.1.3

6.3.1.3

Uncertainties (N2O emissions from domestic
wastewater)

U

6.3.3

6.3.3

Nitrous oxide emissions from industrial wastewaterNG-

6.4 (and all
subsections)

Appendix 6A.1 Non-biogenic (fossil) CO2 emissions
from wastewater treatment and discharge

NG

-

6A.1

Annex 6A.1 Summary data for pit latrine use, nosanitation facility, and groundwater use by country

U, NG

-

6A.1

Annex 6A.2 Derivation of the maximum CH4
producing potential (BO) for domestic wastewater

U

-

6A.2

Annex 6A.3 Estimation of default methane conversion
factors for CH4 in centralised wastewater treatment
plants treating domestic wastewater

U

-

6A.3

Annex 6A.4 Calculation of MCF for methane
emissions from sewage discharges

U, NG

-

6A.4

Annex 6A.5 Estimation of default emission factors forN2O in domestic wastewater treatment plants

U, NG

-

6A.5

Annex 6A.6 Estimation of default emission factors forN2O in effluent

U, NG

-

6A.6

Annex 6A.7 List of countries by region included inTable 6.10a

NG

-

6A.7

Equations•

Equation 6.1 in 2006 IPCC Guidelines was divided to Equations 6.1 (Updated), 6.1a (New), and 6.3a (New)to emphasize calculation by individual pathways.

•

Equation 6.3 was updated to remove the correction factor for additional industrial BOD, as it was added toEquation 6.3a (New).

•

Equations 6.3b (New) was introduced to allow conversion on sludge (t/yr) to organic component removed as
sludge (S in updated Equation 6.1).

•

Equation 6.3c (New) was introduced to estimate the organic component removed from wastewater (in theform ofsludge) from septic systems (S in updated Equation 6.1).

•

Equation 6.3d (New) was introduced to estimate the organic component discharged to aquatic environments
in treated domestic wastewater effluent.

•Equation 6.9 was updated to reflect the calculation of N2O emissions from domestic wastewater treatment
and expanded to cover all wastewater treatment plants.

•

Equation 6.7 was updated to reflect the calculation of N2O emissions from the domestic wastewater effluent
discharged to aquatic environments.

•

Equation 6.10 (New) was introduced to better reflect the calculation of total nitrogen in domestic wastewater.

•

Equation 6.10a (New) was introduced to estimate the amount of protein consumed when national statistics
on protein consumed are not available.

•

Equation 6.8 was updated to reflect the calculation of nitrogen in effluent from domestic wastewater
treatment.

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

A1.11

Volume 5: Waste•

Equations 6.11 (New) through 6.14 (New) were introduced to allow for calculation of N2O emissions fromindustrial wastewater treatment.

Equation Title

Type ofRefinement

2006 IPCC
Guidelines
Equation
Number2019 Refinement
Equation
NumberTotal CH4 emissions from domestic wastewater foreach treatment/discharge pathway or system

U

6.1

6.1

Total CH4 emissions from domestic wastewater
treatment and discharge

U

6.1

6.1a

CH4 emission factor for each domestic wastewater
treatment/discharge pathway or system

NR

6.2

6.2

Total organically degradable material in domestic
wastewater

U

6.3

6.3

Total organics in domestic wastewater bytreatment/discharge pathway or system

NG

6.1

6.3a

Organic component removed as sludge from aerobic
treatment plants

NG

-

6.3b

Organic component removed as sludge from septic
systems

NG

-

6.3c

Total organics in treated domestic wastewater effluent

NG

-

6.3d

Total CH4 emissions from industrial wastewater

NR

6.4

6.4

CH4 emission factor for industrial wastewater

NR

6.5

6.5

N2O emissions from domestic wastewater treatment
plants

U

6.9

6.9

N2O emissions from domestic wastewater effluent

U

6.7

6.7

Total nitrogen in domestic wastewater by treatment
pathway

NG

-

6.10

Protein consumed

NG

-

6.10a

Total nitrogen in domestic wastewater effluent

U

6.8

6.8

N2O emissions from industrial wastewater treatment
plants

NG

-

6.11

N2O emissions from industrial wastewater effluent

NG

-

6.12

Total nitrogen in industrial wastewater

NG

-

6.13

Total nitrogen in industrial wastewater effluent

NG

-

6.14

Tables•Table 6.1 was updated to reflect refinements to the overall wastewater treatment systems and discharge
pathways covered in this chapter.

•

Tables 6.3, 6.7, 6.8, and 6.11 have been updated, and Tables 6.8a (New) and 6.13 (New) introduced, toreflect updated or new emissions factors for CH4 and N2O emissions and the resulting uncertainty ranges.
An alternate set of emission factors is provided for CH4 and N2O emissions from wastewater after disposalof untreated wastewater or wastewater treatment effluent into aquatic environments when the country has
activity data to differentiate the conditions of the waterbody receiving the discharge.

•

Tables 6.6a (New) and 6.6b (New) have been introduced to provide default values for the removal oforganic component from wastewater as sludge (KREM) and wastewater treatment organics removal fractions(TOWREM), according to treatment type.

•

Table 6.10a (New) provides regional default factors for sources of nitrogen in domestic wastewater.

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2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

Annex 1: Mapping Tables•

Table 6.10b (New) has been added to provide additional country-specific information on the use of foodwaste disposals if needing to calculate a country-specific value for the fraction of protein not consumed.

•

Table 6.10c (New) has been introduced to provide default values for the removal of nitrogen fromwastewater (NREM).

•

Table 6.12 (New) has been added to provide default values for use in estimating N2O emissions fromindustrial wastewater.

Table Title

Type ofRefinement

2006 IPCC
Guidelines
Table Number

2019 Refinement
Table Number

CH4 and N2O emission potentials for wastewater andsludge treatment and discharge systems

U

6.1

6.1

Default maximum CH4 producing capacity (Bo) for
domestic wastewater

NR

6.2

6.2

Default MCF values and resultant EFs for domestic
wastewater by type of treatment system and discharge
pathway, j

U

6.3

6.3

Estimated BOD5 values in domestic wastewater for
selected regions and countries

NR

6.4

6.4

Suggested values for urbanisation (U) and degree of
utilisation of treatment, discharge pathway or method(Ti,j) for each income group for selected countries

NR

6.5

6.5

Example of the application of default values fordegrees of treatment utilization (T) by income groups

NR

6.6

6.6

Removal of organic component from wastewater as
sludge (KREM) according to treatment type

NG

-

6.6a

Wastewater treatment organics removal fractions(TOWREM) according to treatment type

NG

-

6.6b

Default uncertainty ranges for domestic wastewater

U

6.7

6.7

Default MCF values and resultant EFs for industrial
wastewater

U

6.8

6.8

Default EF values for domestic and industrial
wastewater

NG

6.11

6.8a

Default factors for domestic wastewater

NG

-

6.10a

Estimate on use of food waste disposal in sewer

NG

-

6.10b

Wastewater treatment nitrogen removal fractions(NREM) according to treatment type

NG

-

6.10c

N2O methodology default data

U

6.11

6.11

Examples of industrial wastewater data

NG

-

6.12

Default uncertainty ranges for industrial wastewater

NG

-

6.13

Summary of literature investigating fossil organiccarbon in wastewater

NG

-

6Ap.1

Summary data for pit latrine use, no sanitation facility,and groundwater use by country

NG

-

6A.1

MCFs based on measured CH4 in full-scale domestic
wastewater treatment plants

NG

Summary of literature investigating CH4 emissions
from wastewater
discharge

NG

-

6A.3

Default N2O emission factors for domestic wastewater
treatment plants

NG

-

6A.4

6A.2

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories

A1.13

Volume 5: Waste

Table Title

Type ofRefinement

2006 IPCC
Guidelines
Table Number

2019 Refinement
Table Number

N2O emission factors in full-scale domestic wastewater
treatment plants

NG

-

6A.5

List of countries by region included in Table 6.10a
(New)

NG

-

6A.6

Figures•Figure 6.1 was updated to reflect refinements to the overall wastewater treatment systems and discharge
pathways covered in this chapter.

•

Figure 6.1a (New) was introduced to present information on the use of pit latrines by low-income country
populations.

•Figures 6.2 and 6.3 were updated to reflect refinements to the tier methodologies for CH4 emissions,particularly related to emissions from discharge.

•

Figures 6.4 (New) and 6.6 (New) were introduced to reflect refinements to the tier methodologies for N2Oemissions.

•Figure 6.5 (New) was introduced to show the sources of nitrogen in domestic wastewater.

•

Figure 6A.1 (New) presents information on the correlation of influent nitrogen load entering wastewater
treatment plants to N2O emissions.

Figure Title

Type ofRefinement

2006 IPCC
Guidelines
Figure Number

2019 Refinement
Figure Number

Wastewater treatment systems and discharge pathways

U

6.1

6.1

Percentage of low-income country populations using
pit latrines as a primary sanitation facility

NG

-

6.1a

Decision tree for CH4 emissions from domestic
wastewater

U

6.2

6.2

Decision tree for CH4 emissions from industrial
wastewater

U

6.3

6.3

Decision tree for N2O emissions from domestic
wastewater

NG

-

6.4

Nitrogen in domestic wastewater treatment

NG

-

6.5

Decision tree for N2O emissions from industrial
wastewater

NG

-

6.6

Correlation between influent N load and N2O emission

NG

-

6A.1

A1.14

2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories