Bio-waste recycling technology established

Researchers at the Life Science Faculty of Kim Il Sung University
Researchers work to find out the culture characteristics of microbial spores at the Life Science Faculty of Kim Il Sung University. (Photo Credit Pyongyang Times)

A joint research team of Kim Il Sung University and the Pyongyang Meat Processing Trading Company has recently established a new technique of recycling domestic rubbish.

A great deal of organic rubbish from households and restaurants exerts a negative effect on public health and ecological environment.

However, organic refuse can effectively be used as feed materials or organic fertilizer for fish and livestock farming when it passes through a proper microbial fermentation, heat and mechanical treatment and biological treatment processes.

"In order to recycle organic refuse, first of all, it is required to draw up an effective microbial fermentation treatment method and explain the cultivation features of microbial spores accordingly," said So Myong Chol, department chief of the Life Science Faculty of Kim Il Sung University.

Researchers separated a dozen species of bacterial strains including protein decomposition bacteria and cultured on an expansion basis various kinds of microbial spores with high decomposition activity and survival rate.

Meanwhile, technicians of the Pyongyang Meat Processing Trading Company focused their research on manufacturing a facility which can raise the effect of microbial fermentation while ensuring the endurance of facility in keeping with the characteristics of domestic rubbish with different acidity, alkalinity, saltiness and pollution level.

Finally, they designed and manufactured devices and parts necessary for the domestic rubbish fermentation process, thus succeeding in making the high-performance facility for organic rubbish fermentation that meets the specific conditions of the country.

"Our facility consumes only half of electricity as compared to imported ones, is productive and can minimize labour and site," said Ha Won Ju, a relevant official.

According to the analysis results of product made from domestic rubbish, it was confirmed that the nutritive, biological and hygienic safety indices reached the standards that could be used as the feed for fish and livestock farming.

Thanks to the establishment of the recycling technology in an industrial way, it came to make tangible contribution to the development of livestock farming and agriculture and the protection of environment.

(Pyongyang Times - December 6, 2020)

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