20 % Reduction of CO2-Emissions with Power-to-Gas in WWTP

Abstract

-The engineering company Witteveen+Bos and the Water Board Aa en Maas explored the potential of a new concept combining Power-to-Gas (PtG) and sludge digestion in Wastewater Treatment Plant (WWTP) Cuijck. This project aims to tackle two topical issues at once, which are respectively the need for increase of energy storage for renewable energy production and the need for reduction of greenhouse gas emissions. The main conclusion of this study shows that Powerto-Gas systems can reduce around 20 % of the carbon dioxide (CO2) emissions and provide long term storage of 126.5 MWh/year (140 579 Nm 3 Synthetic Natural Gas/year) at the WWTP of Land van Cuijk.

Toward Sustainability: An Overview of the Use of Green Hydrogen in the Agriculture and Livestock Sector

“…Pure oxygen is pumped through pipelines at the bottom of the shrimp ponds. Replacing air (21% of O 2 ) with pure oxygen reduces the volume of gas injected into the ponds and the energy needed for the compressors by a factor of five [ 75 ]. The hydrogen produced by electrolysis is used to regenerate electricity by the fuel cells and sold to the national electric grid, but it could also be used as a load-leveling electrical system [ 57 ].…”