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Resourceful treatment method of organic medical wastes

A technology of medical waste and treatment method, applied in the field of hazardous waste recycling, can solve the problem of high cost and achieve the effect of short route, simple operation and carbon emission reduction

Active Publication Date: 2018-11-30
BEIJING ZFRK ENVIRONMENT &TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of using concentrated sulfuric acid is relatively high, and the acid water produced at the same time contains more organic matter, which needs to be treated before it can be used as a resource

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 101.25g of alkylated waste sulfuric acid (acid concentration is 90.3%, containing 6.8% of organic matter) in a round bottom flask (250mL), add organic medical waste of 30% of waste acid quality and ethylene tar of 5% of medical waste quality, Raise from room temperature to 160°C, then maintain for 3.5h, cool to room temperature, weigh 1 times the weight of waste acid and add it to a round bottom flask, stir for 30min, repeat washing with water and stir for 3 times to obtain the filtrate (dilute sulfuric acid Solution) and filter cake (carbon material), collect filtrate in the beaker, the COD value of test filtrate is 361.2mg L -1 , slowly add ammonia water (25-28wt%) under stirring conditions until the solution is neutral, then evaporate the solution until 51.24 g of ammonium sulfate crystals are precipitated. The filter cake was washed with deionized water until neutral, and dried at 110° C. and 0.1 MPa for 2 hours to obtain 38.62 g of carbon materials.

Embodiment 2

[0023] Weigh 146.4g of alkylated waste sulfuric acid (acid concentration is 89.2%, containing 6.8% of organic matter) in a round bottom flask (250 mL), add organic medical waste equal to the quality of waste acid and 1-1% of organic medical waste. Hexyne, raised from room temperature to 250°C, then maintained for 0.5h, cooled to room temperature, weighed water with 1 times the mass of waste acid, added to the round bottom flask, stirred for 30min, repeated washing with water and stirring 3 times to obtain the filtrate (dilute sulfuric acid solution) and filter cake (carbon material), collect the filtrate in the beaker, the COD value of the test filtrate is 528.7mg L -1 , Add ammonia water (25-28wt%) slowly under stirring conditions until the solution is neutral, then evaporate the solution until 48.6 g of crystals are precipitated. The filter cake was washed with deionized water until neutral, and dried at 150° C. and 0.05 MPa for 3 hours to obtain 138.62 g of carbon materials...

Embodiment 3

[0025] Take by weighing 71.6g of sulfuric acid in a round bottom flask (250mL), add 2 times of organic medical waste of acid quality and 10% 1,4-dioxane of organic medical waste quality, from room temperature to 200 ℃, then Maintain for 2 hours, cool to room temperature, weigh 1 times the mass of sulfuric acid and add it to a round bottom flask, stir for 30 minutes, repeat washing with water and stirring for 3 times to obtain filtrate (dilute sulfuric acid solution) and filter cake (carbon material), collect the filtrate into the beaker, the COD value of the test filtrate is 3428.3mg L -1, while stirring, slowly add ammonia water (25-28wt%) until the solution is neutral, and then evaporate the solution until 50.3 g of crystals are precipitated. The filter cake was washed with deionized water until neutral, and dried at 200° C. and 0.01 MPa for 3 hours to obtain 126.01 g of carbon materials.

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PUM

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Abstract

The invention discloses a resourceful treatment method of organic medical wastes, belonging to the field of resourceful treatment of hazardous wastes. The method comprises the following steps: (1) mixing the organic medical wastes with sulfuric acid and a catalyst, and then heating for carrying out a reaction so as to generate a mixture; (2) cooling the mixture obtained in the step (1) to the roomtemperature, adding a solvent into the mixture, stirring uniformly, washing and drying to obtain a carbon material and dilute acid. The resourceful treatment method uses the organic medical wastes and the high-concentration organic waste sulfuric acid as raw materials, and an acid-heating method is adopted to destroy the life structures of the residual pathogenic microorganisms and chemical poisons in the medical wastes so as to enable the residual pathogenic microorganisms and the chemical poisons lose activity and toxicity, so that the organic matters in the organic medical wastes and the acid in the organic waste acid are recycled; not only is carbon emission significantly reduced, but the obtained carbon material and dilute acid also have a great application value. The method providedby the invention is short in route, simple to operate, low in energy consumption and wide in application range, and meets green chemical requirements.

Description

technical field [0001] The invention relates to a method for resourceful treatment of organic medical waste, belonging to the field of resourceful treatment of hazardous waste. Background technique [0002] Medical waste (commonly known as medical waste) is directly or indirectly infectious, toxic and other hazardous waste produced by medical and health institutions in medical treatment, prevention, health care and other related activities, mainly organic medical waste mainly composed of organic matter. Medical waste is a special pollutant. Although the total amount is not large compared with various solid wastes, medical waste contains a large number of pathogenic microorganisms and chemical poisons, which is highly contagious and is a source of harmful bacteria and viruses. One of the sources of transmission is also one of the sources of pollution that produces various infectious diseases and pests. The dangers of medical waste are well known, and its high pathogenicity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C01C1/242
CPCC01B32/05C01C1/242
Inventor 许世彬周志茂
Owner BEIJING ZFRK ENVIRONMENT &TECH CO LTD
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