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Harmless treatment method of medical waste salt

A harmless treatment and harmless technology, which is applied in the direction of chlorine/hydrogen chloride and chloride preparation, can solve problems such as melting and low hardness, and achieve the effect of reducing process costs and solving hazards

Active Publication Date: 2020-01-07
陈蕾 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the obtained solid product is usually a powder with low hardness, and will melt after soaking in water, which cannot meet the actual needs of the building materials industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for harmless treatment of waste medicine salt, comprising the following steps: taking waste medicine salt, the NaCl content of the waste medicine salt is 73wt%, and the particle size is 100 mesh. Take quartz sand, the SiO of said quartz sand 2 The content is 82.4wt%, Al 2 o 3 Content is 5.5wt%, Fe 2 o 3 The CaO content is 3.2wt%, the CaO content is 4.6wt%, the particle size of the quartz sand is 100 mesh; the weight ratio of the medical waste salt to the quartz sand is 2.0:1. Add 1wt% additive calcium carbonate, based on the weight of medical waste salt; mix well, set the temperature at 1150°C; heat up time for 1h, and the holding time for 1.5h; cool down to room temperature to obtain the treated harmless product .

Embodiment 2

[0042] A method for harmless treatment of medical waste salt, comprising the following steps: taking medical waste salt, the NaCl content of which is 70 wt%, and the particle size of the medical waste salt is 80 mesh. Take quartz sand, the SiO of said quartz sand 2 The content is 82.4wt%, Al 2 o 3 Content is 5.5wt%, Fe 2 o 3 The CaO content is 3.2wt%, the CaO content is 4.6wt%, the particle size of the quartz sand is 100 mesh; the weight ratio of the medical waste salt to the quartz sand is 2.1:1. Add 0.8wt% additive calcium carbonate, based on the weight of medical waste salt; mix thoroughly, set the temperature at 1100°C; heat up time for 3h, and the holding time for 5h; cool down to room temperature to obtain the treated harmless product .

Embodiment 3

[0044] The method comprises the following steps: taking medical waste salt, the NaCl content of which is 75 wt%, and the particle size of the medical waste salt is 120 mesh. Take quartz sand, the SiO of said quartz sand 2 The content is 82.4wt%, Al 2 o 3 Content is 5.5wt%, Fe 2 o 3The CaO content is 3.2wt%, the CaO content is 4.6wt%, the particle size of the quartz sand is 100 mesh; the weight ratio of the medical waste salt to the quartz sand is 1.9:1. Add 2wt% calcium carbonate as an additive, based on the weight of waste medical salt; mix thoroughly, set the temperature at 1200°C; heat up for 1 hour, and hold for 3 hours; cool down to room temperature to obtain a treated harmless product.

[0045] Evaluation

[0046] Measure the Mohs hardness of the obtained harmless products of Examples 1-3 and Comparative Examples 1-3 and the weight percentage of the dry weight of the solid content of the product after soaking in water for 72 hours and the initial weight. See Table ...

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PUM

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Abstract

The invention discloses a harmless treatment method of medicine abraum salt. The method comprises the following steps of taking medicine abraum salt and quartz sand; adding an additive; fully mixing the raw materials, and setting the temperature; conducting temperature rising and temperature preserving; cooling to the room temperature, and obtaining treated harmless products. By means of the harmless treatment method, the obtained harmless product is high in rigidity, and cannot be melted when soaked in water, and the actual requirement for producing floor tiles and other building material products can be met. Besides, chlorine is generated and can be recycled, and the process cost is lowered; meanwhile, refractory organics can be completely converted into harmless substances, and the harmto the environment by the medicine abraum salt is thoroughly avoided.

Description

technical field [0001] The invention relates to the field of solid waste treatment, in particular to a harmless treatment method for medical waste salt. Background technique [0002] With the rapid development of my country's pharmaceutical industry, a large amount of medical waste salt is produced every day and cannot be processed. The main component of medical waste salt is sodium chloride, and it also contains inorganic impurities such as nitric acid and sulfuric acid, as well as a certain amount of water. In addition, medical waste salt contains a large amount of harmful refractory organic matter, which produces a strong fishy smell, and is usually required to be sent to landfill as hazardous waste for disposal. Therefore, most enterprises stockpile or dump them in the open air, which poses a huge threat to the environment. With the loss of rainwater, soluble salts and harmful refractory organic matter continue to cause serious soil pollution, deterioration of vegetati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C6/06C01B7/03
CPCC01B7/03C03C1/002
Inventor 陈蕾陈正
Owner 陈蕾