Example of sulphuryl fluoride fumigation of grain silos directly under Qingdao

There are up to hundreds of known species of grain storage pests, of which the rice weevil, the red mimic grain robber and the book louse are three of the more common ones, and they reproduce so quickly that a single rice weevil can lay nearly six hundred eggs in a month's time. If they are mixed into a granary storing hundreds of tonnes of grain under ideal conditions, it will take less than a year for the entire granary to be chewed into powder.

Recently, a number of grain silos in the Qingdao Grain Silos Depot have been infested with storage pests such as the red marmorated grain borer, and thousands of these pests can be clearly seen in the silos actively gathering in one piece, which poses a great danger to the food security of the silos. For this reason, the company's fumigation technicians went to the grain silo with sulphuryl fluoride fumigant to carry out fumigation and pest control operations to reduce grain losses.

After the technicians came to the site, they firstly carried out a mapping of the damaged situation of the grain silo, and found a large number of pests inside and around the silo, and the technicians formulated a relevant fumigation plan according to the distribution range of the pests.

According to the fumigation plan, the fumigation technicians explained the fumigation plan to the grain silo staff and divided the work among them. The doors and windows of the silo were closed to ensure that all preparations were complete, and then the technicians started the fumigation operation. In the process of fumigation, the technicians regularly tested the concentration of sulphuryl fluoride in the silo and made records carefully.

When the concentration of sulphuryl fluoride in the silo reaches a certain value, the delivery of sulphuryl fluoride will be stopped. When the sulfuryl fluoride agent in the silo carries out the insecticidal treatment, wait for the scheduled fumigation time to end, carry out the corresponding ventilation treatment for the grain silo, and at the same time detect the concentration of sulfuryl fluoride in the silo until the concentration of sulfuryl fluoride in the silo of the Liu Pioneer reaches the safe value, then the personnel can enter. Through the fumigation of sulfuryl fluoride, the pests in the granary were effectively prevented and controlled, and the food security in the granary was effectively guaranteed without damaging the grain.