(Fighting against New Coronary Pneumonia) Keeping the "Shanghai" Log: Closed-loop Disposal of Epidemic-related Waste and Guarding the "Last Mile" of Epidemic Prevention
China News Service, Shanghai, April 25 (Reporter Li Jiajia Zhang Hengwei) In the waste incineration plant in Fengxian District, Shanghai, since the closed management was implemented in March, the on-duty personnel here have been adjusted from four shifts and two shifts to three shifts and two shifts. The disposal team and collaboration The unit has more than 100 people stationed in the factory on duty, 24 hours of efficient operation, and all-weather operation.
Staff in protective gear are registering garbage trucks entering the plant.
Photo by Cao Shuang
In the unloading hall in the negative pressure environment, workers wearing protective clothing and N95 masks are carrying out comprehensive disinfection of garbage collection and transportation vehicles.
On the other hand, at the bottom of the designated discharge port, the operators have already pad the clinker, and these domestic wastes are dumped into a fixed area, which is convenient for the garbage crane operators to grab and directly throw them into the furnace for incineration.
Immediately afterwards, the garbage collection and transportation vehicle left the site after being completely sterilized again, and the complete closed-loop disposal was formed in this way.
The operation manager told reporters that after the domestic garbage collection and transportation vehicle in the closed control area arrives at the company according to the "fixed person, fixed point, fixed vehicle, fixed time, and fixed line", the disposal team will implement the steps of "disinfection in the factory - disinfection at discharge - disinfection at the factory" Carry out operations to ensure that the entire amount of garbage in the closed control area is unloaded and burned immediately.
According to the characteristics of domestic waste in the closed control area, before disposal, the incinerator will first ensure that the furnace temperature is stable at 850 °C and the flue gas residence time is more than 2 seconds to ensure that the waste is fully dried and burned.
At the same time, control the hopper in advance to keep the material level low, reduce the exposure time of domestic garbage in the air, and prevent the spread of pollution in the garbage pit.
The person in charge of the Fengxian District Waste Incineration Plant introduced, "Due to the particularity of domestic waste in the closed control area, we will increase the amount of auxiliary materials in advance. For example, when the burner pilot is to confirm that the auxiliary equipment for safety and environmental protection is in normal use, this can ensure that during the disposal process. Even if the furnace temperature fluctuates, adjustments can be made in advance to ensure that the flue gas discharges up to the standard.”
Since the outbreak of the epidemic in March this year, Shanghai Dongshitang Renewable Energy Co., Ltd., as a waste incineration plant in Fengxian District, a subsidiary of Shanghai Chengtou Shanghai Environment, has completed the disposal of domestic waste in Fengxian District with a total of more than 1,930 tons of closed control areas.
In fact, before the epidemic-related garbage was transported to the incineration plant, a group of "big whites" were busy cleaning and transporting the epidemic-related garbage.
The Hongqiao Street Community Health Service Center in Changning District has undertaken nucleic acid screening and sampling tasks for more than 70,000 people within the Hongqiao Street area.
With each nucleic acid screening and sampling, a large amount of community medical waste will be generated, and improper disposal will affect the prevention and control of the epidemic.
As an important part of the epidemic prevention and control guarantee, the "big white" here has summarized the whole chain "three specialties" of medical waste treatment through practice. The Hongqiao model of special personnel, special vehicle collection and transportation, and special management of sterilization, effectively closed-loop Take care of community medical waste.
In a control community in Hongkou District, it was just dawn. When most of the people were still sleeping, a "big white" who received and transported had started a clean-up operation for epidemic-related garbage.
A series of processes are familiar.
After "Dabai" came to the door, put a yellow special medical waste garbage bag on the outside of the household garbage bag of the positive infected person, and then seal it with a gooseneck. The garbage in the garbage bag does not exceed 3/4 of the volume.
After sealing, disinfect the surface of the garbage bag with 1000 mg/L chlorine-containing disinfectant, and then send it to the nearest community health center or temporary centralized storage point on the street by the collection and transportation personnel.
Recently, the number of positive cases in Shanghai has remained at a high level, and the collection, transportation and disposal of epidemic-related waste has also continued to "climb".
Since March 11, the average volume of medical waste in Shanghai has increased from 308 tons/day to 1,130 tons/day.
Shanghai Environment has disposed of more than 26,000 tons of medical waste in total. Nearly 300 medical waste collection and transportation vehicles in the city travel nearly 60,000 kilometers per day, which is equivalent to running around the earth's equator for a lap and a half, keeping the "last mile" of epidemic prevention.
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