Feasibility Study on Utilization of Biogas from Wastewater at Noodle-Making Factory in the Kingdom of Thailand

Global Environment Centre Foundation(GEC)

Reports of CDM/JI Feasibility Studies

Title of the researchFeasibility Study on Utilization of Biogas from Wastewater at Noodle-Making Factory in the Kingdom of Thailand
FYFY 2006
Main research orgnisationKanematsu Corporation
Research partner(s)Sitthinan Co., Ltd./Kansai Design Company, Ltd./Toyo-Thai Corporation Limited/Bio Natural Energy Limited
Location of the projectThailand (Lardlumkaew District, Pathumthani)
Summary of the research report (PDF)Summary(PDF 334KB)
Description of the projectAt the moment, wastewater discharged from the food factory of Sitthinan Co, Ltd, where the site for the proposed project is located, is treated in lagoon ponds. The project is designed to treat the wastewater in an anaerobic treatment system (EGSB) so as to restrict the atmospheric emission of methane gas. At the same time, the methane gas is recovered without leak in the atmosphere by means of anaerobic wastewater treatment to utilize for high- efficiency power generation by gas engine. The electricity generated in this way is used to power the factory (this being regularly fed to a functional agitator serving the aeration tank). The electric power obtained from the Provincial Electricity Authority (PEA) can accordingly be reduced, thus cutting greenhouse gas fossil-fuel emission by an equivalent amount. Additionally, this project makes it possible for greenhouse gases to be reduced through the combustion of surplus methane gas and in cases of emergency by means of a flare stack.
Sector of the projectBiomass Utilisation
Duration of the project activity/ crediting period2009-2022/
2009–2015 and 2016–2022
Baseline methodology/additionalityThe approved methodology AM0022 shall be adopted in the project.
Scenario 1: Continuity of the current practice (BAU)
Scenario 2: Direct discharge of wastewater into nearby lakes and ponds
Scenario 3: Proposed project (There is no CDM)
Scenario 4:Aerobic treatment of wastewaters (activated sludge or filter bed type treatment)
Scenario 1 of continuity of the current practice is not disturbed by the Legal, Financial, Technical, Institutional, Social, Business culture and others barriers.
Scenario 3 of the proposed project is not implemented as the CDM project is barriers, and not a baseline scenario as a result of investment analysis, barrier analysis.
It is additional for the implementation organization to execute the project by means of utilizing anaerobic treatment facility (EGSB) to obtain CER based on risks of climate, water ingredient and construction circumstances.
Estimation of GHG emissionsIt is 20,469 t-CO2e that project emissions 2,408 t-CO2e was deducted from the baseline emissions 22,877 t-CO2e. In addition, there is no possibility of Leakage by this project.
Monitoring methodologyThe monitoring method of approved methodology AM0022 shall be adopted. Major monitoring parameters are as follows;
ID1:Wastewater load at the inlet of EGSB (system boundary) : m3
ID2:Wastewater load at the outlet of EGSB (treatment facilities of the project):m3
ID3:Wastewater COD at the inlet of EGSB (system boundary):kg COD / m3
ID4:Wastewater COD at the outlet of EGSB (treatment facilities):kg COD / m3
ID5:The electric energy generated by biogas recovered in the anaerobic treatment facilities.:MWh
ID6:The amount of biogas flown to flaring:Nm3
ID7:The amount of biogas flown to power generating unit:Nm3
ID8:Biogas methane concentration:%
ID9:Flare thermal efficiency:%
ID10:Thermal efficiency of power generating unit : %
ID11:Wastewater flow rate to the pond system: direct to the existing wastewater treatment facilities bypassing EGSB (new construction of wastewater treatment facilities):m3
ID12:Loss of biogas methane from the pipeline:%
ID13:Organic materials removed from the wastewater facilities : t COD
ID14:Biogas heat value:J/Nm3
ID15:The amount of chemical oxidation flown into the system boundary:tonnes/m3
Environmental impactThe project and particulars relevant to the environmental impact assessment system in Thailand had been discussed and conferred with Sitthinan Co., Ltd and related government ministries and agencies with the result that the project is not incompatible with the system. Local environmental conditions will be improved by means of methane gas recovery and reduced foul odor and efficient utilization of renewable energy against power demand in Thailand and local construction and regular maintenance, saving of foreign currencies by power generation with indigenous resources. Thereby encouraging improvement of technical capabilities of operators and technical staff for facility management and maintenance; therefore, the improvement of technological capabilities in the entire local communities can be expected.
Issues and tasks for project implementationIRR including credit of this project was 7.0%. The major subjects are (1) Examination to promote investment efficiency to by the fuel use to a heavy oil boiler for processes in an existing factory, (2) Examination and detail of risk items, (3) Approval structure by Thailand as CDM project, (4) Initial investment of this project, (5) Detail of operation cost, (6) Finance planning detail etc.
The project will be able to accomplish main physical objectives (odor control, power demand and saving the factory space), There was a remark if fixed economy was secured by Sitthinan Co., Ltd to examine a supply from a financial institution to the maximum, the bank of the Japanese and local bank are being asked for the examination of the loan at present.