Changes

Dry Toilet

832 bytes added, 21:41, 4 September 2020
References
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pic=Dry_toilet1.png|
Input1=Urine|Input2= Faeces |Input3=Anal Cleansing Water| Input4= Dry Cleansing Materials |Input5=|Output1=Stored urineExcreta| Output2= Anal Cleansing Water | Output3= Dry Cleansing Materials | Output4= | Output5=|french_link=Toilettes_sèches|english_link={{PAGENAMEE}}|spanish_link=Retrete_ Seco|
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<br> [[Image:Icon_dry_toilet.png|right|95px80px]]
'''A Dry Toilet is a toilet that operates without water. The Dry Toilet may be a raised pedestal that the user can sit on, or a squat pan that the user squats over. In both cases, excreta (both urine and faeces) fall through a drop hole.'''
HereIn this compendium, a Dry Toilet dry toilet refers specifically to the device that over which the user sits or squats over. In other literature, a Dry Toilet dry toilet may refer to a variety of technologies, or combinations of technologies (especially pits).
[[Image:dry_toilet.png|thumb|right|150px200px|[[Dry toilet |Dry toilet]], in Mexico (for credits, click the picture)]]
[[Image:slatsanc.jpg|thumb|right|150px|[[Dry toilet 200px|SanPlat]]-type dry toilet. (for credits, click the picture)]]
===Design Considerations=== The Dry Toilet dry toilet is usually placed over a pit; if two pits are used, the pedestal or slab should be designed in such a way that it can be lifted and moved from one pit to another. The slab or pedestal base should be well sized to the pit so that it is both safe for the user and prevents stormwater from infiltrating the pit (which may cause it to overflow). The hole can be closed with a lid to prevent unwanted intrusion from insects or rodents. Pedestals and squatting slabs can be made locally with concrete (providing that sand and cement are available). Fibreglass, porcelain and stainless steel versions may also be available. Wooden or metal moulds can be used to produce several units quickly and efficiently.
The slab or pedestal base should be well sized to the pit so that it is both safe for the user and prevents stormwater from infiltrating the pit (which may cause it to overflow).
{| border="1" cellpadding="5" cellspacing="0" align="centernone"
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! width="50%" style="background:#efefef;" | Advantages
! style="background:#f0f8ff;" | Disadvantages
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| valign="top" |- Does not require a constant source of water.<br>
- Can be built and repaired with locally available materials.<br>
- Low capital and operating costs.<br>
- Suitable for all types of users (sitters, squatters, washers, wipers)
| valign="top" | - Odours are normally noticeable (even if the vault or pit used to collect excreta is equipped with a vent pipe).<br>
- The excreta pile is visible, except where a deep pit is used.
- Vectors such as flies are hard to control unless fly traps and appropriate covers are used.
|}
===AdequacyAppropriateness===Dry Toilets toilets are easy for almost everyone to use. Because there is no though special consideration may need to separate urine and faeces, they are often the most physically comfortable and natural option. Pedestals and squatting slabs can be made locally with concrete (providing that sand and cement are available). Wooden for elderly or metal molds can be used to produce several units quickly and efficientlydisabled users who may havedifficulty. When dry toilets are made locally, they can be specially designed to meet the needs of the target users (e.g. , smaller ones for children). FibreglassBecause there is no need to separate urine and faeces, porcelain and stainless steel versions may also be available. They they are appropriate for almost every climate. ===Health Aspects / Acceptance===Squatting is a natural position for many people often the simplest and so a well-kept squatting slab may be the physically most acceptable comfortable option.
===Health Aspects/Acceptance=== Squatting is a natural position for many people and so a well-kept squatting slab may be the most acceptable option. Since Dry Toilets dry toilets do not have a water seal, odours may be a problem depending on the Collection and Storage/ Treatment technology connected to which it is connectedthem.
===Operation & Maintenance===The sitting or standing surface should be kept clean and dry to prevent pathogen/disease transmission and to limit odours. There are no mechanical parts; therefore, the dry toilet should not need repairs except in the event that it cracks.
There are no mechanical parts and so the Dry Toilet should not need repairs except in the event that it cracks. === Manuals, videos, and links ===
* [http://www.youtube.com/watch?v=GLJj8RB02NY Dry toilet] Demonstration of SanPlat system.
* [httphttps://www.sanplat.com/sharewar.htm http://www.sanplat.com/sharewar.htm Manual for building SanPlat-type dry toilets].
* [https://www.wsp.org/hwws-toolkit/hwws-tk-home?utm_source=Newsletter_May_2013&utm_campaign=Wasrag+February+2013Newsletter&utm_medium=email Handwashing with Soap Toolkit]
===References===
* Brandberg, B. (1997). [httphttps://developmentbookshopwww.comircwash.org/resources/product_info.php?products_id=299 latrine-building-handbook-implementing-sanplat-system Latrine Building. A Handbook for Implementation of the Sanplat System]. Intermediate Technology Publications, London, UK. pp 55–77 . 55-77. (Describes how to build a squatting slab and the moulds for the frame, footrests, spacers, etc.) * CAWST (2011). [http://https://sswm.info/sites/default/files/reference_attachments/CAWST%202011%20Introduction%20to%20Low%20Cost%20Sanitation.pdf Introduction to Low Cost Sanitation. Latrine Construction. A CAWST Construction Manual.] Centre for Affordable Water and Sanitation Technologies (CAWST), Calgary, CA. (Very detailed construction manual for different slab designs)<br>
* Morgan, P. R. (2007). [http://http://www.ecosanres.org/toilets_that_make_compostpdf_files/ToiletsThatMakeCompost.htm pdf Toilets That Make Compost: . Low-costCost, sanitary toilets that produce valuable compost Sanitary Toilets That Produce Valuable Compost for crops Crops in an African contextContext]. Stockholm Environment Institute, SwedenStockholm, SE. ] (Excellent description of how to make support rings and squatting slabs (pages 7–35pp. 7-35) and pedestals (39–43pp. 39-43) using only sand, cement, plastic sheeting and wire.) Available: www.ecosanres.org<br>
* Squatting plates Morgan, P. R. (2009). [http://http://www.sanplatecosanres.com wwworg/pdf_files/EcologicalToilets-PeterMorgan-Mar2009.pdf Ecological Toilets. Start Simple and Upgrade from Arborloo to VIP].sanplatStockholm Environment Institute, Stockholm, SE.com ]<br>
* Netherlands Water Partnership (NWP) Reed, B. (20062012). [httphttps://wwwwedc-knowledge.lboro.ircac.nluk/resources/pagebooklets/28448 Smart Sanitation SolutionsG005-Latrine-slabs-online.pdf An Engineer’s Guide to Latrine Slabs]. Examples of innovative, low-cost technologies for toilets, collectionWEDC, transportationLoughborough University, treatment and use of sanitation products]. NWPLeicestershire, NetherlandsUK. (Provides country specific data Comprehensive guide with key information and links checklists for further information.design, construction and maintenance)<br>
===Acknowledgements===
{{:Acknowledgements Sanitation}}
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