What is ventilated improve pit latrine?

What is ventilated improve pit latrine?

A ventilated improved pit latrine (VIP) is similar to a single pit latrine with addition of a vertical vent pipe. Through the aeration in VIPs, odour and fly nuisances are reduced. Excreta, along with anal cleansing materials (water or solids) are deposited into a pit.

What is the function of ventilation pipes in pit latrines?

Wind blowing over the top of the ventilation pipe causes air in the pipe to rise. Replacement fresh air is drawn into the pit through the superstructure and down the toilet hole. This flow of fresh air keeps the superstructure free of odours.

Why vent pipe is installed in VIP latrine?

Flies that hatch in the pit are attracted to the light at the top of the ventilation pipe. When they fly towards the light and try to escape, they are trapped by the fly-screen and die. The ventilation also allows odours to escape and minimizes the attraction for flies.

How do you make a pit latrine?

Dig a deep hole set back at least 50 feet from drinking water (in some villages a simple six-foot hole was sufficient for a family of six for up to three years). To keep from falling into the pit, install a cover, or “squatting plate,” of wood or reinforced concrete with a hole cut in the middle.

What are VIP latrines?

Ventilated improved pit. (VIP) latrines. The addition of a vent pipe to a simple pit latrine is one way of reducing the nuisance of flies in the cubicle if the cubicle is kept clean and dark. This type of latrine is called a ventilated improved pit (VIP) latrine.

What are the types of latrine?

The possible choices are a single pit latrine, a pit latrine with slab, a VIP latrine with slab, a double pit latrine or one of the ecosan systems, namely an Arborloo or a Fossa Alterna.

What is the maximum number of pits considered in pit latrine?

What is the maximum number of pits considered in pit latrines? Explanation: Indeed, some pit latrines are designed to allow faecal matter to compost and be reused in agriculture whereas other designs use two alternating pits. 4. Sanplat is a type of pit latrine.

How deep should a pit toilet be?

Although the recommended minimum depth of the pit varies among studies, it should generally not be dug deeper than to a vertical distance of at least 2 m above the groundwater, accounting for the water table’s seasonal highest level (Franceys et al., 1992; Reed, 2010; Banks et al., 2002).