SEWAGE TREATMENT SYSTEM AND SEWAGE TREATMENT METHOD

摘要

The invention relates to a sewage treatment system, comprising a separation unit (12) adapted to separate sewage sludge from sewage to obtain pretreated sewage; heat generation means (20), such as a two-stage furnace, adapted to generate heat from separated sewage sludge; a purifier unit (16, 18) adapted to evaporate pretreated sewage and re-condense evaporated water contained therein; and first heat transfer means (24) adapted to transfer heat from the heat generation means to the purifier unit, wherein the transferred heat is used to evaporate pretreated sewage. The invention further relates to a sewage treatment method.