Investigation on Power Generation by the Methane Capture from the Municipal Waste in Vietnam

Global Environment Centre Foundation(GEC)

Reports of CDM/JI Feasibility Studies

Title of the researchInvestigation on Power Generation by the Methane Capture from the Municipal Waste in Vietnam
FYFY 2004
Main research organizationNippon Mining Research & Technology Co., Ltd.
Research partner(s)Ho Chi Minh City
Location of the projectHoc Mon district, Ho Chi Minh City, Vietnam
Summary of the research report (PDF)Summary (86kb)
Description of the projectThe project activity is recovery of landfill gas (LFG) emitted from Dong Thanh landfill and generation of electric power using the recovered LFG with a view to reducing the emission of greenhouse gases. The power generated will be supplied to the local power grid. Excess LFG which may not be used for power generation shall be combusted in flare stacks.
Sector of the projectWaste Management
Duration of the project activity/ crediting periodCredit period: 10 years(2007-2016)
2005:Validation, 2006:Construction, 2007:Operation
Baseline methodology/additionalityConsider the following three scenarios as alternatives to the proposed project.
Scenario 1: Continuation of the current situation; Dong Thanh landfill keeps the current practice of discharging LFG to the atmosphere without any treatment.
Scenario 2: Collection and flare combustion of the LFG.
Scenario 3: Collection and use of LFG to generate electric power and
supply it to the local grid. Excess LFG is flared.
Scenario 1 ,2 and 3 are listed as baseline scenario (to the project scenario). Investment and barrier analyses are made after confirming all the scenarios can be realized under the laws and regulations of Vietnam today. The result leads to the conclusion that scenario 2 and 3 can not be the baseline scenario, while scenario 1 can be the baseline scenario. Furthermore, scenario 3, the project scenario can be said to be additional, because it will only be realized when registered as CDM project accompanied by the revenue from CER.
Estimation of GHG emissionsAmount of CO2 emission reductions by power generation and flare is shown as follows.

Accumulated amount of GHG emission reductions (CO2 equivalent) achieved by the project are as follows:

Monitoring methodologyThis project applies ACM0001 ("Consolidated baseline methodology for landfill gas project activities") which is approved and registered by UNFCCC Executive Board.
Since the project fulfils applicability conditions of ACM0001, this methodology is applicable to the project activity. In this project, however, thermal energy is not recovered to use, the reference of thermal energy in ACM0001 is not applied.

The monitoring plan, setting monitoring items and method of data collection etc, of this project is shown in the Figure. The circles in the Figure stand for monitoring items and points.
Environmental impactThe industrial drainage standard in Vietnam is applied to leachate in landfills. The water area for drainage is classified into three types as follows, and type of B is applied to the project.
A: drainage to water area for daily life water source.
B: drainage to water area used for water transportation, irrigation, fishery, swimming.
C: drainage to water area where is especially permitted to be drained.
In Vietnam, the noise at boundary between project site and outside (residential area) is controlled by noise regulation standard. In the project, Category No.4 of the standard for industrial area in compact settlement is applied. In the case of Dong Thanh landfill, the entrance on the boundary is the nearest to the residential area. Regarding the project, the site for power generators is away from the boundary by more than 100m. Consequently, the noise at the entrance is greatly eliminated to be no problem (the noise of a point away from the power generator by 60m is under 50dB (A)).
The environmental impact assessment is to be implemented.
Various data are also scheduled to be monitored during the operation period so as to comply with the environmental standards in the host country.
Issues and tasks for project implementationThe First Order Decay is used as the method of forecasting the amount of LFG generated from the landfill. Estimated LFG by calculation can not give actual accurate amount of the CO2 reduction because it is difficult that complete Model is used. It is necessary to examine data like amount of generation and chemical composition (silica etc.) analyses etc. of LFG closely as a small-scale local test is executed.
In addition, it seems that the capacity bldg. in which it centred on the local government is necessary for the CDM business making.