Clivus Multrum composting toilet systems
The Clivus Multrum Composting Toilet System is a dry, composting toilet.
The Clivus Multrum composting toilet systems are dry toilets connected to a composting tank. The faeces are composted without adding water or chemicals and the end product can be used as fertilizer or soil amendment.
The main target regions are Europe and North America but Clivus Multrum distributes globally. The company is present in Austria, Australia, Belgium, Canada, Denmark, Finland, France, Germany, Ireland, Italy, Netherlands, New Zealand, Norway, Russia, Spain, Sweden, South Korea, Switzerland, the United States, and the United Kingdom
Depending on the model and retailer the price ranges between 970 and 8,800 USD. Price varies between countries and retailers and depending on the material of toilet and the size of tank used. The price example used for min-max is taken from WCT.
Goal 6: Clean water and sanitation
Individual households, vacation homes, public bathrooms, and offices.
Clivus Multrum has manufacturing factories in several countries.
Patented by Clivus Multrum
Direct sales from distributors. Installation can be completed by the user or by Clivus Multrum.
As of 2021, over 20,000 toilets have been sold globally.
Type of toilet
Method of evacuation
How the fecal sludge is stored
The holding volume of the containment
Time until emptying is estimated to be needed
The user interface is selected by the user with available options and modifications. Toilets are made out of porcelain or glass fiber and are either pedestals or made to be positioned on a bench.
The toilet seat is connected to a polyethylene composting tank with a 6-9 mm wall size. Tank sizes vary from 650 to 4200 liters.
The sewage is stored in the composting tank until it is completely composted. This process takes about 6-7 years depending on the composting environment (micro-organisms, humidity, ventilation, and temperature). The leachate from the urine and liquid components are gathered in an assigned space and can be used as fertilizer. Detailed information about the composting process used is found here.
Additional information about the toilets and composting process used is found here.
Clivus Multrum and their subcontractors offer technical support.
Replacement components can be aquired at Clivus Multrum distributors.
Tanks are made by recycled and recyclable polyethylene.
The manufacturers claim that the composting process reduces volume by 98% in 7 years while eliminating pathogens and producing fertilizer and soil amendment. They also specify that their products are odourless.
Samples from installation in Sweden were tested for pH, various bacteria (coliform, Escherichia coli, Enterococcus, and Clostridium perfringens), organic matter content, total nitrogen, ammonium, phosphorous, potassium, and magnesium. The test results can be found here.
No safety concerns if used and maintained properly.
Clivus Multrum composting toilets are certified under the NSF/ANSI Standard 41.
Laboratory testing and field testing by Eurofins.
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