DT Technology (Dry Toilet technology) glossary
After-composting = Composting of the emptied dry toilet waste. In the Finnish weather conditions, it is recommended to do compost the waste for at least 1 year before emptying the compost. If the compost product is intended to be used for fertilising plants, this “after composting” should happen after a minimum of 2 years.
Ageing = Preservation of leachate or urine to a vessel, with no new, fresh liquid being added afterwards. If necessary, disinfection of the liquids is carried out, in other words the bacteria of the excrement and other pathogens are destroyed.
Black water = Wastewater which contains urine and / or excrement. It should not be released into the nature without treatment.
Compost = The end result of the composting which can be used to enrich the soil
Composter = A bin or a similar vessel where organic matter is composted
Composting = Decomposition of organic matter by microorganisms in acidic conditions
Dehydrate / mixed material = Carbonaceous material which is added to the dry toilet or compost to absorb moisture, aerate the compost and act as a source of energy to the decomposer organics; e.g. woodchip, brushwood, sawdust or mixture of peat.
Dry toilet = A toilet which does not use water to transport the urine or excrement
Dry toilet equipment = Equipment which is used in dry toilets which can be purchased or self-made. The simplest one is a simple vessel where the toilet waste is collected.
Ecological sanitation = Sanitation which is realised in an ecologically sustainable and safe way to humans. The waste from the toilet does not escape and cause eutrophication of water bodies but composted to be used as a fertilser or soil improving substance.
Evaporator toilet = A toilet where the liquid is evaporated and the solid waste is after-composted in a separate composter
Freezer dry toilet = A toilet where the toilet waste is frozen andcomposted in a separate composting bin/container where the dehydrate is added. This toilet does not need an aeration pipe and the container is small and needs therefore to be frequently emptied.
Germination test = Germination of seeds to show the state of the readiness of the compost
Grey water = Washing or cleaning water, e.g. from a washing machine, from the kitchen or the shower. Grey water does not include urine or excrement.
Incinerating toilet = This toilet evaporates the urine and makes ash out of the excrement. The ash can be used as an enhancement matter for decorative flowers. In the ash, the nitrogen is evaporated. This type of a dry toilet consumes a lot of energy.
Leachate = This liquid has an almost black color, as it has gone through the feces and so contains bacteria of the excrement and pathogens. The leachate should not be applied straight to the soil but it should be evaporated, composted, treated with leachate filter or used as an enh matter for decoration flowers after its aging.
Separating toilet = The urine and excrement are separated into their own vessels under the seat. The urine can be used as a fertiliser after one month of ageing. The solid waste (excrement, paper and dehydrate) is composted properly.
Soil enhancement matter = Matter which enhances the plant’s growth conditions and the fertility of the soil
Toilet compost = Toilet waste being composted. Garden waste may be placed among the toilet waste in the composting.
Toilet waste = The functioning characteristics of the toilet affect the properties of the toilet waste. In addition to urine and excrement, the toilet waste can include clearing water, dehydrate and/or paper.