トイレで豊かな村づくり

Situation surrounding toilets in developing countries

In many developing countries including Malawi and Kenya, where NICCO has been working, people still mainly use a pit latrine, or open spaces to defecate, not having access to a sanitary toilet facility. In the rainy season, sewage spill causes infection and diarrhea, leading to the deaths of children with a particularly weak immune system.

途上国の幼児死亡率
家庭のトイレホール(ケニア)
▲ Typical toilet in a household (Kenya)
生活用水の河川(ケニア)
▲River used for domestic water (Kenya)

Circulation System Using Eco-San Toilets

In our project sites, NICCO is working to promote ecological sanitation toilets, so-called "Eco-San Toilets".

Eco-San Toilets, due to their high-floored feature, prevent spilling of human excreta when raining, and thereby help prevent water pollution and soil contamination. Feces are dried and sanitized using ash as an alkaline additive in a tank for approximately six months, to use it as manure for the soil. Also, urine is collected separately from feces and diluted with water, so that it can be used as liquid fertilizer. These fertilizer and manure produced by Eco-San Toilets increase crop yields 1.2~2.5 times more than non-fertilized farm fields, and reduce the use of expensive chemical fertilizer.

エコサントイレ循環の仕組み

エコサントイレは、まさに“一石三鳥”のトイレなのです。

地域の衛生改善の様子

1. Public health improvement

Workshop on Eco-San Toilets for children: NICCO educates them on proper usage of toilets, health and hygiene through these workshops.

良い土壌の畑つくりの様子

2. Making rich soil for faming

Local people learning on Eco-San manure: Feces taken out of the tank is dry and can be used as organic manure.

化学肥料使用の抑制の様子

3. Less use of chemical fertilizer

Cultivation comparison: Crops grow well even without chemical fertilizer, when applied Eco-San manure. (above) field without Eco-San manure, (below) field with Eco-San manure

To date, NICCO has constructed more than 1,000 toilets in Malawi. We are now in the process of constructing more toilets in Bushiangala, Kakamega County, South west Kenya. We are also working in Myanmar to develop a new model of Eco-San Toilet, aiming to improve sanitation in the areas.

Eating and elimination are basic human activities, and a part of natural cycle. We think it is important to make them safer and more hygienic through efforts such as promoting Eco-San Toilets, in order to help build a sanitary, prosperous village.

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