Sludge incineration is asewage sludge treatment process usingincineration. It generatesthermal energy fromsewage sludge produced insewage treatment plants. The process is in operation inGermany where Klärschlammverbrennung GmbH inHamburg incinerates 1.3m tonnes ofsludge annually. The process has also been trialed inChina, where it has been qualified as an environmental investment project.[1] However theenergy balance of the process is not high, as sludge needs drying beforeincinerating.[2]
Sewage sludge can be incinerated in mono-incineration or co-incineration plants. In co-incineration, sewage sludge is not the only fuel and it can be processed at coal fired power plants, cement plants and in some waste incineration facility.[3]
Germany currently has around 27 mono-incineration facilities, where only sewage sludge is processed.[3]
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