compost toilet components

sanitary flycatcher — zero pollution


Three compost toilets are enough for two people. When the third is full, the first is ready for harvest.

Drawing of compost toilet


Human digestion efficiency is less than fifteen percent. Therefore; eighty-five percent of food value is deposited in the compost toilet. The idea is to use several toilet compartments for decomposition. Harvesting the compost is a pleasant experience; after enough time passes.

Three composting toilets this size will accommodate two people, plus their friends. The first toilet is ready for harvesting of rich fertilizer when the third toilet is full — time has passed. Flies are attracted to the light, they do not escape. There are many designs for this system. This one is open at the bottom and extends a few centimeters underground. Do not allow composting material to clog entrances for ventilation and sunlight. Seal the main opening for the composting process. Move the portable toilet seat to another toilet. Decomposition requires ventilation. The compost toilet is an old idea. It is ecological and intelligent economics. Composting toilets can also reduce chemical pollution into the sewer.

Compost toilets do not need to be above ground. Three holes in the ground is also effective. Sunlight for the fly trap can enter via a bamboo tube. Use insect screen. Composting toilets should be away from water wells, streams and shallow underground water. The stairs are included to illustrate scale, they are not necessary. A door at the bottom and sunlight are about design ideas. It is also easy to dig out a hole full of rich fertilizer. Composting toilets create value and relieve stress on Earth’s life support systems.

Drawing of compost toilet

Example design of six chambers for a family of four. Dotted line represents a roof line.

Several families, including my family, lived with versions of this system for over fifteen years in Santa Barbara, California. The entire neighborhood was destroyed by fire in the year 2008. This functional system which creates wealth instead of pollution has been lost, possibly forever.

Compost toilets similar to this are very inexpensive. They do not require maintenance and create wealth instead of pollution. Instead of injecting sewage and chemicals into rivers which are drinking water for the next town downriver, compost toilets retain eighty-five percent of the food value to fertilize soil.

Eutrophication is the term for nutrient fed algae blooms which choke rivers and create dead zones where the river meets the sea. Ecological economics tells us we must learn to save human sewage as wealth rather than polluting water while wasting most of the ten calories of oil required to produce one calorie of food.

The compost toilet is another product which is an income source for those who learn this technology. It also clearly illustrates how the physical laws of entropy become usable knowledge for those who are considering a sustainable replacement for corporate consumerism.

drawing of compost toilet

The dry ecological toilet creates wealth, it does not use or pollute water.

The three hole small system was known as the God thanker system in my neighborhood. Harvesting rich fertilizer that was once waste should be a pleasant experience. If not, make a smaller repository to provide a little more time before attempting to harvest. Eighty-five percent of your food bill revolves in the flycatcher composting toilet. Let it compost until the richness is comfortable to touch.

Also see the excellent work of César Añorveo to learn about Mexican design compost toilets, at this link. Over 100,000 compost toilets of César Añorveo's design are in Oaxaca with millions built throughout Mexico. Although César's work is in Spanish, there are sufficient photos and drawings for general comprehension by those who do not speak the language.

César Añorveo's excellent website includes a good source list for further research in English as-well-as Spanish. The basic idea is a single composting chamber with a sloped floor. The slope allows decomposed excrement to flow downward to an opening at the bottom where finished compost may be harvested.

Although the larger chamber is functional, a dampness and odor are present unless location and construction are perfect. Sunlight is important for all compost toilets. Several small chambers rather than a single large chamber have also proven to be sanitary and very low cost. An additional decomposition chamber may be added if requirements change. Eighty-five percent of the food bill passes through the compost toilet. Anything that makes the compost harvest pleasant and easy is a good idea.