FIELD: chemistry.
SUBSTANCE: invention relates to water discharge and water supply. In one sewage effluent, faecal water and kitchen waste water is tapped. The remaining liquid wastes are discharged in the second sewage effluent. Water from the second sewage effluent is taken for purification and decontamination through an external sewage network. The purified and decontaminated water is brought to technical water level, transported to a building and used to wash-off faecal wastes.
EFFECT: invention reduces fresh water consumption.
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