The soil purification method is a unique wastewater treatment technology developed by Masashi Niimi, known as an independent agricultural scientist in Japan.
It is defined as "a method that consciously applies the unique functions of soil ecosystems within wastewater treatment systems." This low-cost and environmentally friendly treatment method utilizes the power of soil organisms, such as microorganisms that are said to number in the hundreds of millions in a spoonful, and earthworms that are voracious eaters and help reduce sludge, to break down wastewater and odors. Additionally, the soil purification method is based on two main technologies: the "soil cover method," which involves covering conventional wastewater treatment systems such as sewers and village drainage with soil, and the "capillary infiltration trench method," which directly channels wastewater and sludge into the soil to maximize the capabilities of the soil zone. In other words, the term soil purification method is widely used as a general term for these techniques, and even within the same soil cover method, there are many facilities that combine not only the Niimi system but also standard activated sludge methods and long aeration methods.
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basic information
【Features】 ○ Covers the treatment device with soil to prevent secondary pollution such as bad odors and foam splashes. ○ The upper part of the treatment facility can be planted with grass, allowing for park greening. ○ Easy maintenance and management as it does not require special machinery or equipment. ○ Contains filter media, allowing for the use of natural organisms. ○ Long retention time ensures stable treated water even with load fluctuations. ● For other functions and details, please contact us.
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Applications/Examples of results
【Uses】 ○ Sewage systems ○ Sewage treatment plants, landfill sites ○ Riverbanks ○ Rainwater management ● For other functions and details, please contact us.
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Would you like to solve local environmental issues with the power of soil? Let's create a comfortable life with a sewage system through soil purification methods!
