Urine-Diverting Dry Toilet (UDDT)

Home , Dry toilet, Toilet, Urinal, Urine diversion

46 Compendium of Sanitation Systems and Technologies .2 Functional Group U: User Interface rn tns o ut ot eas teeoe metals therefore, the metals; of piping and construction theavoided in be should most rust to tends Urine dependingonuserpreference. faeces rate from urine sepa- to used be can slab squat a and pedestal a Both collection. andfaeces rate the drain from urine cleansing water to go into a third, dedicated basin sepa- anal allow that toilets separating 3-hole also are There ofthe area toilet.into the dry area in the front, and that b) urine does not splash down collection urine the clog and into fall not do faeces a) that ensure to separated well are toilet the of sections Design Considerations that It theis important two should beaddedinto defecating. the sameholeafter earth or ash lime, as such material drying follows, that technology Storage/Treatment and Collection the on Depending back.the in (hole) chutelarge a through fall and faeces while toilet, collected the of is area front the urine from drained that such built is UDDT The from faeces. the urineuser,divert the away can the effort, little with that so divider a has and water without operates that toilet a is (UDDT) toilet dry urine-diverting A Urine-Diverting Dry Dry ToiletUrine-Diverting (UDDT) option 1 U2: U for wipers RINE DIVE RT urine IN G DR Y TO option 2 I LET (UD D T) urine Outputs: Inputs: cetne ih sr. o bte acpac o the of acceptance better For users. with acceptance achieve togood essential are training and projects tion - Demonstra well. as toilet of type this accepting from others deter mistakesmay bowl) urine the and in faeces (e.g., made it, using about hesitant be may users not Atfirst, users. immediatelytoobvioussome intuitiveor is UDDT The Health Aspects/Acceptance people whoprefer to squat, etc.). children, for smaller (i.e., populations specific of needs the suit to altered be can design UDDT The plastic. or mesh wire and concrete as materials such using build, and design to simple is UDDT The Appropriateness atthe drain. odour sealshouldbeinstalled urine an pipe, the up back coming from odours prevent To accessisdifficult. slopes, andwhere mm) should be used elsewhere, especially for minimum where maintenance is easy. and Larger diameter pipes (> slopes 75 steep for sufficient is mm 50 of diameter slope, and sharp angles (90°) should be avoided. A pipe 1% a least at with installed be should pipes exist, they age tanks should be kept as short as possible; whenever stor to (pipes) connections all scaling, limit ToUDDT. (

Anal Cleansing Water)(

option 3 Faeces for washers

Faeces (+

Anal CleansingWater) anal cleansingwater System 4 Applicable to:

Urine Dry Cleansing Dry Materials) Dry Cleansing Materials) urine - + + + + + Pros &Cons tois critical check regularly itsfunctioning. It maintenance. occasional requires also seal odour An required. ages. However, in some cases manual removal may be water to soda) 1 can part be used for removing block parts (2 solution soda caustic a or acid acetic) 24% (> Stronger scaling. and deposits mineral of build-up the prevent can water hot and/or vinegar) (e.g., acid mild a with bowl the Washing present. urine constantly is where surfaces on and pipes in up build and precipitate can salts and minerals magnesium-based and calcium- separately, collected is urine Because the not are faeces mixed with water. cleaned with water, care should be taken to ensure that is toilet the When dry. and separate remain faeces the that important is It thoroughly. more cleaned be can and removable easily are toilets Some bowls. inner the and seat the down wipe to used be may cloth damp a Instead, cleaning. toiletfor the in poured be not should Water stains. of formation the minimize to and odours All of the surfaces should be cleaned regularly to prevent blockages andcleaning problems. causing section, urine the in deposited accidentally be can Faeces maintenance. and cleaning extra in result may which perfectly, streams both separating difficulty work for everyone and, therefore, some users may have will design No urine. liquid and faeces solid the arate sep- to need the and water of lack the both of because toilets other to compared clean keep to difficult more slightly is UDDT A Operation &Maintenance men to andurinate. stand allowing (U.3), Urinal a with combined be can toiletthe system andto avoid in the collection urine bowl, faeces washers, wipers) washers, (sitters, squatters, forSuitable alltypesofusers costs Low andoperating capital materials withCan bebuiltandrepaired locallyavailable correctly maintained ifusedand with problems No real fliesorodours Does not ofwater source aconstant require

P._ Morgan, R.(2007). Toilets ThatMake Compost. Low-Cost, Reading References &Further - - - - - M.(Eds.)(2004). U. andSimpson-Hébert, _ Winblad, H.(2012). C.,von Münch, E.andHoffmann, _ Rieck, Technol- Sanitation Solutions.Examples (2006).Smart of _ NWP Münch, E.andWinker,_ von M.(2011). Technology Review P._ Morgan, R.(2009).EcologicalToilets. Start Simple and

squat plate) bucketusing aplastic andhow to aurine-diverting construct (Provides step-by step onhow to instruction buildaUDDT Available at: www.ecosanres.org holm, SE. Context.an African Stockholm Environment Institute, Stock ToiletsSanitary ThatProduce Valuable Compost for Crops in Available at: www.ecosanres.org Stockholm Environment Institute, Stockholm, SE. Ecological Sanitation. Revised andEnlarged Edition. Available at: www.susana.org/library DE. GmbH, Eschborn, fürInternationale Zusammenarbeit(GIZ) Gesellschaft of Design,Operation, Management andCosts. Deutsche ogy Review Toilets Dry ofUrine-Diverting (UDDTs). Overview Available at: www.ircwash.org TheHague,NL. Netherlands Water Partnership, Transportation, Treatment andUseofSanitation Products. Innovative, Technologies Low-Cost for Toilets, Collection, Available at: www.susana.org/library DE. Internationale Zusammenarbeit(GIZ)GmbH,Eschborn, Toilets, Storage Urine andReuse Systems. für Gesellschaft Components Such asWaterless Diversion Urine Urinals, Diversionof Urine Diversion Components. ofUrine Overview Available at: www.ecosanres.org tute, Stockholm, SE. Upgrade from to Arborloo VIP. Stockholm Environment- Insti collection ofurine aseparateMen usuallyrequire for Urinal optimum The excreta pileisvisible toIs prone misuseandcloggingwith faeces Requires andacceptance training to beusedcorrectly Prefabricated modelsnot available everywhere -

47 Compendium of Sanitation Systems and Technologies U

Functional Group U: User Interface .2