Sanitation 21 planning framework - IWA

Sanitation 21Sanitation system options and Management Requirements (cont.)2B Onsite wet with (semi) centralisedtreatmentDOMAIN SanitationManagementElementsHouse-HoldToiletCollectionMEDIUM: Responsibleuse of the toilet –requires adequate waterNeighbourhoodWard/ DistrictOption 1TransportTreatmentRe-useHIGH (1) LOW (2):Where households haveno demand for re-useoncsider if there areoptions for re-use furtherdownstream. If so whatare the management andregulation requirements?(could be community/district govt or smallscale private operation)CityOption 2TransportTreatmentDisposal orRe-useMEDIUM(1) HIGH (2):At city level treatmentoptions includecombination withconventional wastewatertreatmentBeyond thecitySub-Option3TransportDisposal orRe-useHIGH: Base decisionon whether there areacceptable disposal/ reuseoptions? How willthis be financed?3A Waterbourne with pre treatment and(semi) centralised treatmentSanitationManagementElementsToiletPre-treatmentMEDIUM/HIGH:Household responsibilityfor pre-treatment– consider availabilityof small operators toempty silt traps etc.Option 1TransportTreatmentDisposalHIGH (1) Low (2):Management options:could be community/district govt or smallscale private operationOption 2TransportTreatmentDisposal orRe-useSub-Option 3TransportDisposal orRe-useMEDIUM (1)HIGH(2):City responsibility forpublic or possibleprivate operation oftreatment. Re-usehas high managementrequirementsHIGH: Base decisionon whether there areacceptable disposal/re-use options.High managementrequirements3B Water bourne with (semi) centralisedtreatmentSanitationManagementElementsToiletLOWOption 1TransportTreatmentDisposalHIGH (1) LOW (2):Management options:could be community/district govt or smallscale private operationOption 2TreatmentDisposalMEDIUM (1) HIGH(2): City responsibilityfor public or possibleprivate operation oftreatment. Re-usehas high managementrequirementsSub Option 3Re-useHIGH: Is there amarket for re-use ofwaste – this has highoperational costs.Table63C Waterbourne with centralisedtreatmentSanitationManagementElementsToiletLOWTransport LOWOption 1TreatmentDisposalHIGH: Cityresponsibility fortreatment publicor possible privateoperation of treatment.Re-use has high mgt.requirementsSub Option 2Re-useHIGH: Is there amarket for re-use ofwaste – this has highoperational costs.– 23 –