Page d'accueil   |  A propos de cette collection  |  Aide  |  Effacer       Anglais  |  Français  |  Espagnol  
Document complet
Dérouler chapitre
Etendre sommaire
Préférences
vers la section précédente vers la section suivante

fermer ce livreA Guide to the Development of on-site Sanitation (WHO; 1992; 246 pages)
Afficher le documentPreface
fermer ce répertoirePart I. Foundations of sanitary practice
ouvrir ce répertoire et afficher son contenuChapter 1. The need for on-site sanitation
ouvrir ce répertoire et afficher son contenuChapter 2. Sanitation and disease transmission
ouvrir ce répertoire et afficher son contenuChapter 3. Social and cultural considerations
fermer ce répertoireChapter 4. Technical options
Afficher le documentOpen defecation
Afficher le documentShallow pit
Afficher le documentSimple pit latrine
Afficher le documentBorehole latrine
Afficher le documentVentilated pit latrine
Afficher le documentPour-flush latrine
Afficher le documentSingle or double pit
Afficher le documentComposting latrine
Afficher le documentSeptic tank
Afficher le documentAqua-privy
Afficher le documentRemoval systems for excreta
ouvrir ce répertoire et afficher son contenuPart II. Detailed design, construction, operation and maintenance
ouvrir ce répertoire et afficher son contenuPart III. Planning and development of on-site sanitation projects
Afficher le documentReferences
Afficher le documentSelected further reading
Afficher le documentGlossary of terms used in this book
Afficher le documentAnnex 1. Reuse of excreta
Afficher le documentAnnex 2. Sullage
Afficher le documentAnnex 3. Reviewers
Afficher le documentSelected WHO publications of related interest
Afficher le documentBack Cover
 

Aqua-privy

An aqua-privy has a watertight tank immediately under the latrine floor. Excreta drop directly into the tank through a pipe. The bottom of the pipe is submerged in the liquid in the tank, forming a water seal to prevent escape of flies, mosquitos and smell. The tank functions like a septic tank. Effluent usually infiltrates into the ground through a soakpit. Accumulated solids (sludge) must be removed regularly. Enough water must be added to compensate for evaporation and leakage losses.

Advantages

Disadvantages

Does not need piped water on site

Water must be available nearby

Less expensive than a septic tank

More expensive than VIP or pour-flush latrine

 

Fly, mosquito and smell nuisance if seal is lost because insufficient water is added

 

Regular desludging required, and sludge needs careful handling

 

Permeable soil required to dispose of effluent

vers la section précédente vers la section suivante

S'il vous plaît envoyez vos commentaires   Anglais  |  Français  |  Espagnol