FormerXBC Inc XEBEQ

wastewater plants

[Possibleidiot01]

 I found myself asking could wastewater treatment plants be engineered  to SAFELY produce RNG? I did know a guy who when asked about the difference between sheep and cow manure said it fell from a different height.

This would expand the number of  potential sites muchly.. This is what I found.. It has been done and this pdf says how it can be down and it includes the two examples below..

https://www.globalmethane.org/documents/ww_fs_eng.pdf



Global Methane Initiative 4 www.globalmethane.orgLa Farfana Wastewater Treatment Plant (WWTP): Santiago, Chile The La Farfana WWTP, managed by Aguas Andinas, treats more than 60 percent (8.8 cubic meters per second [m3/s]) of the wastewater in the Santiago Metropolitan Area. This project upgrades biogas from the anaerobic digesters to town gas quality. Town gas quality is achieved using a treatment train consisting of compression and dehydration to eliminate humidity, a bioreactor and a scrubber that removes 95 percent of the hydrogen sulfide (H2S), and a thermal oxidizer that removes CO2 and traces of oxygen and nitrogen in the gas. Afterwards, the treated gas is sold to the Metrogas Town Gas Plant located 13.8 kilometers west of the Farfana WWTP. The project was registered as a Clean Development Mechanism project in 2011 and is expected to yield reductions of 26,000 metric tons of CO2E annually from the avoided use of fossil fuels. For additional information, please visit the GMI website www.globalmethane.orgAdministrative Support Group (ASG)Global Methane InitiativeTel: [phone] E-mail: [e-mail] GMI at WorkGMI brings together the collective resources and expertise of the international community to address technical and policy issues and to facilitate wastewater methane abatement, recovery, and use projects in Partner Countries. It facilitates project development and implementation in the following ways:•Capacity building and outreach efforts.•Raising awareness about technologies.•Assisting with project financing.•Developing sector-specific and country-specific action plans.•Providing technical assistance to help assess the feasibility of projects.•Conducting demonstration projects.•Providing hands-on training and workshops.•Helping to leverage investment from the private sector and financial institutions. Looking ForwardInitial work of the GMI Municipal Wastewater Subcommittee will focus on the following: •Developing country-specific resource assessments and action plans, which will outline methane reduction and utilization potential in the wastewater sector and detail paths forward.•Performing project-focused pre-feasibility studies that will assess specific methane recovery and use options at wastewater treatment facilities.•Conducting training and capacity building focused on biogas utilization opportunities.•Initiating grant-supported wastewater activities in GMI partner countries.•Partnering with research organizations focused on wastewater methane to explore opportunities for utilization and reductions.January 2013Arrudas WWTP: Sabar, BrazilThe Arrudas WWTP is located in the city of of Sabar, Brazil, and serves the approxi-mately 1.5 million people from the Metropolitan Region of Belo Horizonte. The WWTP is a 3.3 m3/s (4.5 m3/s final design flow) activated sludge plant that utilizes anaerobic digesters for sludge treatment. The project captures the biogas produced from the anaerobic digesters, treats it to remove H2S, and uses it to generate heat and power for the WWTP in a CHP system. The CHP system consists of 12, 200-kilowatt microtrubines, for a total electric gen-erating capacity of 2.4 megawatts. The electricity produced is used completely on site and meets 90 percent of the WWTP’s requirements. Hot exhaust gases from the microturbines flow through heat exchangers to heat recirculated sludge from the digesters to optimize biogas production. The biogas energy project began in April 2012