Скачать или смотреть New technology processes livestock manure into "biochar"

가축 분뇨, 악취 없이 하루 만에 '바이오 숯'으로

The majority of odor complaints in South Korea are due to the livestock sector.
A local research team has developed a technology that not only processes livestock manure in a shorter period, but also turns the waste into an agent usable in agriculture.
Park Kun-woo has more.

One of the biggest problems that livestock farmers have to deal with is odor from manure decomposition.
The process of treating livestock manure releases nitrous oxide, carbon dioxide, and pungent-smelling ammonia.
Treating 100 tons of manure produces up to 800 kilograms of ammonia.

"There is odor from the farms, but it is worse at the manure treatment facility. The stages of storing or fermenting the manure releases compounds that cause the stench."

Existing methods take up to two months, but now a technology has been developed that not only reduces the time to just a single day,
but turns the livestock manure into what is called "biochar", combining the words "biomass" and "charcoal".
Carbon waste is trapped in the pellets, and can be used to improve soil quality.

There are three steps to the process: dewatering, drying, and heating.
In the first step, wet manure is pressed through a squeezer, while already dry manure is ground to smaller pieces.
Then, the manure is dried, with 10 baffle plates functioning like a hair dryer to drop the moisture level to under 20 percent in just one minute.
In the final step, thermal decomposition produces the "biochar" pellets.
The heat used in step 3 is set up to be reused in the drying process of step 2.


"With the existing methods of processing livestock manure, it is very difficult to turn the compost back into the agricultural cycle because of over-nutrition.
But this "biochar" can solve this issue, as well as other environmental problems."


The biggest obstacle that stands in the way of this new technology becoming commercialized is its cost.
The research team is looking for a way to increase the daily processing scale 10-fold, from its current capacity of 10 tons, as it also explores options to export this technology.
Park Kun-woo, Arirang News.

#New_technology #livestock_manure #biochar #SouthKorea #agriculture #가축분뇨 #바이오숯 #Arirang_News #아리랑뉴스

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2024-06-07, 12:00 (KST)