| 摘要 |
A method of purifying sewage is described. The method relates to purifying sewage in sewage systems which comprise a toilet (1) by adding a precipitant for precipitation of phosphates and for binding organic substance. The metho d is characterised in that the precipitant is selected from the group consisti ng of iron salts and aluminium salts, such as sulphates, chlorides and nitrates and is adapted to be flushed with water in the bowl (3) when flushing. In th e method, the sewage from the toilet (1) is preferably conducted to a sludge separator through an outlet pipe (5, 8) which leads to the lower part of the sludge separator (6) below its outlet (7).
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