Recently researchers of a waste-water purifi cation laboratory of the Environmental Engineering Institute of the State Academy of Sciences established a system of disinfecting the sericultural process by means of sodium hypochlorite.
In the past cocoon production companies of the sericultural sector had to use imported antisep- tic materials including bleaching powder and formalin. It badly affected cocoon production in no small measure. Researchers of the sector made efforts to solve the problem but in vain.
On an official tour, Pak Se Chol, head of the laboratory, came to know about the problem while talking with an officer of a cocoon production company. He looked back on his past when he had been proud that he had been solving urgent sci-tech problems arising from the reality.
Back at the institute he said to his researchers, “Even though we did a lot of researches in the past, the sericultural sector still depends on imported antiseptic materials. We must solve the problem without fail.”
Thus, the laboratory started the research to solve the problem while continuing with that to purify waste water. Some countries had relied on chemical process and graphite electrodes in producing sodium hypochlorite, but it caused much consumption of electricity and raw materials. So the researchers sought to fi nd a different method.
Let’s bravely do away with the existing formula and rely on our own technology and raw materials —this determination made the researchers unite into one. They made a concerted effort to make a sodium hypochlorite generator and then automated the production process. Not satis fied with this, they developed the generator into a more convenient one capable of producing the antiseptic solution with ease. Users of the machine say that the generator consumes less raw materials and electricity than the previous ones, that it is easy to operate as it is simple in structure and that the solution helps improve their work- ing environment, compared with the previous imported ones.
The researchers also established a system of disinfecting different objects including cocooneries and sericultural machines and tools and thus laid a material and technical foundation for cocoon production. Their further efforts ensured 99 percent of disinfecting rate, made the disinfecting system Juche-oriented and made it possible to increase production of cocoons.
Last year the sector of sericulture surpassed its peak-year level on the basis of the researchers’ achievements. The researchers also laid a solid foundation for increased production of catfish at the Samchon Cat fish Farm by establishing a water recirculation process there. They are now engrossed in other researches for the sake of the people. Pak says, “We’ll expand our endeavour to develop and introduce processes and devices of different kinds for different sectors including sericulture and stock-breeding. We think there is no end to scientific researches for the sake of the people.”
Article: Kim Hyon Ju