Medical garbage sorting harmless treatment and combustible recycling method

Abstract

The invention relates to a medical garbage sorting harmless treatment and a combustible recycling method. The pre-treatment and separating of the medical garbage comprise the following steps: (1) garbage collecting; (2) sorting; (3) crushing; (4) radiation sterilization; (5) separating: according to the specific weight and magnetism of materials, separating the medical garbage into four types: lighter materials, heavier materials, magnetic materials and residual materials; recycling the lighter materials, the heavier materials and magnetic materials and sending the residual materials in a special garbage incinerator to burn. When recycling the lighter materials, the materials are crushed and mixed with smoke coal powder in 100:30-40 ratio, then proper binding agent and other additives are added, after adding water, the mixture is pressed and molded by a former and dried by air to form bulk fuel. The invention facilitates recycling of physical resources and reduces energy consumption and air pollution.

Description

technical field [0001] The invention relates to a method for classified harmless treatment of medical waste and recycling of combustibles, which is mainly used for the recovery and final treatment of medical waste and other infectious and harmful waste. Background technique [0002] For infectious solid wastes such as medical waste, people have adopted a variety of methods to deal with them. The main technical direction is to incinerate, and the microorganisms will be completely decomposed by incineration, so that they are no longer infectious. For example, China No. 200510048910.8 The patent application discloses a circulating fluidized bed incineration method for medical waste. Limestone is used as the inert bed material of the circulating fluidized bed. Calcium oxide generated by burning limestone at high temperature is combined with hypochlorous acid in medical waste and pyrolysis incineration. The neutralization reaction of acid gases such as hydrogen chloride produced ...

AI Technical Summary

Problems solved by technology

This method can effectively solve the infectious problem of medical waste, but due to the use of incineration, it also brings problems such as fuel consumption, loss of recyclable materials, and air pollution. Garbage treatment process, the process includes the following steps: the first step, the medical waste is sent to the comprehensive processor through the garbage conveying device, and sealed; the second step is to deliver steam with a temperature of The pressure rises to 4-8 atmospheres, and the holding time is 20-50 minutes; the third step is to open the garbage discharge device at the lower end of the comprehensive processor, so that the medical waste enters the collector in a closed manner, and the steam is discharged from its chimney; the fourth step, The medical waste in the collector is sent to the sorting machine by the conveying mechanism; the fifth step is to sort out the metals and batteries in the medical waste; the sixth step is to transport the sorted medical waste to the shredder for crushing; Seven steps, transport the crushed garbage to the disposal site

Since this method firstly performs high-temperature steam sterilization, and then sorts to a certain extent, metals that can be recycled are recovered and incineration is not suitable for batteries, which improves the combustion characteristics of materials to a certain extent, but the final treatment is still through Incineration treatment, problems caused by incineration still exist

[0003] However, from the perspective of the composition of medical waste, except for a small amount of materials that need special treatment, the composition of most of the materials is similar to that of general domestic waste, and some of the materials of medical waste have good recycling value, such as disposable Non-toxic plastic products and fiber products. The key reason why these medical wastes cannot be recycled like domestic waste is that they already and may carry pathogenic and dangerous microorganisms. If they are collected and recycled like existing domestic waste , will bring great danger to the environment and practitioners

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