The project activity qualifies as Type I: Renewable energy project activities with a maximum output capacity of 15 MW (or an appropriate equivalent).
During the primary treatment of the wastewater of Cali, carried out in the WWTP-C, sludge composed of the organic matter susceptible to the decomposition is generated. The sludge is produced in eight sedimentation tanks and next carried into the floatation thickener tank. Later on sludge is redirected to four covered anaerobic digestion tanks (digesters) with the purpose of obtaining more stable end product and eliminating pathogenic microorganisms present in the untreated sludge.
The above mentioned anaerobic digestion, besides stabilizing sludge, generates biogas with high content of methane (between 57% and 64% according to the latest analyses undergone in the WWTP-C 1).
The baseline scenario is the existing sludge treatment system without displacement of the national grid electricity by the electricity auto-generated by the Wastewater Treatment Plant – WWTP Cañaveralejo (further called WWTP-C).
The activity of the proposed small-scale project consists of the displacement of the national grid electricity by the electricity auto-generated by the Wastewater Treatment Plant – WWTP Cañaveralejo. Biogas is produced during the anaerobic digestion of the sludge obtained through the wastewater treatment processes and farther used as fuel in two sets of engine-generators with purpose to generate the electricity for the internal use of the WWTP-C.
This project advances the following United Nations Sustainability Development Goals:
Standard of issuance:
AMS-I.D. ver. 13 – Grid connected renewable electricity generation
Amount of reduction:
Renewable energy generation in wastewater management plants. CDM Post-Registration