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Screw-type composting plant RA-X

In Sri Lanka, the company operates an organic and agricultural waste recycling business using a screw-type composting plant, RA-X.
In this project, household food waste in Sri Lanka is recycled as compost instead of chemical fertilizers using the screw-type composting plant RA-X, which is then used by farmers to grow crops.
Each household collects garbage separately, and only household food waste is collected and used as raw material. Agricultural waste is used as a moisture conditioner to produce high-quality compost, which is then sold to neighboring farmers.
Currently, 20 units of RA-X are in operation in Sri Lanka, backing up agriculture throughout the country.

イ RA-X composting system to solve the problem of separating food scraps!

When collecting garbage, food waste in plastic bags, plastics, bottles, cans, etc. can be thrown into the RA-X.
After the fermentation process that comes out of the RA-X, it is sorted and the compost is taken to agricultural use, while the plastics go to landfill.
With this RA-X, it is possible to separate landfills, known as garbage piles, into agricultural compost and non-agricultural waste.

RA-X Automated composting system to solving the problem of separating food scraps!

イ Features of Ra-x = Complete aerobic fermentation process

(1) Easy maintenance and low running cost
(2）Low temperature drop during agitation and energy-saving fermentation
(3) Simultaneous treatment of solids and sewage is possible.
(4) High-temperature fermentation is possible even in cold regions.
(5）Low odor generation RA-X Automated composting system to solving the problem of separating food scraps!

イ Ra-x in Sri Lanka

イ Low odor and short processing time

Why no bad odor is generated during composting
The most important aerobic bacteria of composting are allowed to grow in every corner, creating an environment that does not allow anaerobic bacteria to operate.
Screw agitation is a major know-how, which results in the deposition of raw materials without compaction, and air is spread to every corner of the compost.
Screw agitation ensures air permeability even when moisture content is slightly high, maintaining aerobic bacteria.

Reasons why the time period can be shortened
The elements necessary for composting are (1) nutrient source, (2) moisture, (3) air (oxygen), (4) microorganisms, (5) temperature, and (6) maturation period.
Conventional turnover methods have the disadvantage of temporarily lowering the fermentation temperature due to exposure to outside air.
With screw agitation, the sediment is agitated up and down in the sediment, so only the top of the sediment is exposed to the outside air and the high temperature can be maintained. This made it possible to shorten the time period by 50% compared to other turnaround processes.