Sewage digestion gas power generation
A sewage treatment plant requires about 0.3 kWh of electric power to treat 1m3 of sewage water. Sewage itself contains massive organic substances which match 0.7kWh/m3 calorific value. If this energy could be recovered, sewage treatment plants could efficiently save energy.JFE Engineering is positioned to put digestion gas power generation system on the market. This system anaerobically digests the sludge from the sewage treatment process and uses the digestion gas to drive a gas engine. With this system, about 0.1 kWh of energy can be recovered from 1m3 of sewage water (equals to about 7 kWh from 1m3 of 1%-concentration sludge produced).
Digestion Gas Engine
JFE Engineering has added a new type of gas engine to its product lineup that is more efficient than conventional gas engines. The new model uses a Miller cycle gas engine to achieve a power generation efficiency of 40% or higher.