阅读说明：本技术 一种焚烧类危废物检测方法 (Detection method for incineration type hazardous waste ) 是由 陈明 郭琳 李伽 覃佩熙 于 2021-04-19 设计创作，主要内容包括：本发明涉及危废处理技术领域,具体涉及一种焚烧类危废物检测方法,包括如下步骤：1)以焚烧类危废物作为样品,称量样品；2)将称量后的样品在热量仪中充分燃烧；3)收集热量仪中样品燃烧产生的所有溶液,将溶液用去离子水定容至L得到待测溶液；4)对待测溶液进行硫含量检测；5)对待测溶液进行氯含量检测；6)对待测溶液进行氟含量检测；7)分别计算样品焚烧后的总硫、总氯和总氟含量。本发明检测方便快捷可指导危险废物行业对焚烧类危险废物中的总硫、总氯、总氟进行检测；且操作简单,无需复杂的前处理过程。(The invention relates to the technical field of hazardous waste treatment, in particular to a detection method for incineration hazardous waste, which comprises the following steps: 1) taking the incineration type hazardous waste as a sample, and weighing the sample; 2) fully burning the weighed sample in a calorimeter; 3) collecting all solutions generated by sample combustion in a calorimeter, and fixing the volume of the solutions to L by using deionized water to obtain a solution to be measured; 4) detecting the sulfur content of the solution to be detected; 5) detecting the chlorine content of the solution to be detected; 6) detecting the fluorine content of the solution to be detected; 7) and respectively calculating the total sulfur content, the total chlorine content and the total fluorine content of the burned sample. The method is convenient and rapid to detect, and can guide the hazardous waste industry to detect the total sulfur, the total chlorine and the total fluorine in the incineration hazardous waste; and the operation is simple, and a complex pretreatment process is not needed.)

1. A detection method for incineration type hazardous wastes is characterized by comprising the following steps:

1) taking the incineration type hazardous waste as a sample, and weighing the sample;

2) fully burning the weighed sample in a calorimeter;

3) collecting all solutions generated by sample combustion in a calorimeter, and fixing the volume of the solutions to L by using deionized water to obtain a solution to be measured;

4) detecting the sulfur content of the solution to be detected;

5) detecting the chlorine content of the solution to be detected;

6) detecting the fluorine content of the solution to be detected;

7) the total sulfur, total chlorine and total fluorine contents of the burned samples were calculated according to the following formulas:

wherein:

w is the total sulfur, total chlorine and total fluorine content after incineration of the product,%;

m₀: sample weighing, g, of the sample;

c₀: the concentration of sulfate, chloride, total fluorine in the aqueous solution to be tested, mg/L.

2. The method for detecting incineration-type hazardous waste according to claim 1, wherein in the step 1), the sample is weighed by using a balance with the precision of 0.0001.

3. The method for detecting incineration hazardous wastes according to claim 1, wherein in the step 2), the calorimeter is an oxygen bomb calorimeter.

4. The method for detecting incineration-type hazardous waste according to claim 3, wherein in the step 3), the collected solution comprises liquid generated in an oxygen bomb of an oxygen bomb calorimeter and tail liquid.

5. The method for detecting incineration hazardous wastes according to claim 1, wherein in the step 4), the method for detecting the sulfur content is a barium chromate ultraviolet spectroscopy.

6. The method for detecting incineration hazardous wastes according to claim 1, wherein in the step 5), the method for detecting the chlorine content is a silver chloride automatic potentiometric titrator method.

7. The method for detecting incineration hazardous wastes according to claim 1, wherein in the step 6), the method for detecting fluorine content is an ion activity meter method.

Technical Field

The invention relates to the technical field of hazardous waste treatment, in particular to a detection method for incineration hazardous waste.

Background

Hazardous waste can pose great harm to ecological environment and human health, and how to control the harm of the hazardous waste to the environment and the human health becomes a great problem facing all countries in the world today. The hazardous waste has wide sources, various types and complex batch components, and secondary pollution is easily caused when the treatment method is poor, the operation is unstable or the risk control experience is insufficient. The waste gas generated after burning hazardous waste mostly contains a large amount of hazardous substances, wherein the three indexes of total sulfur and total chlorine and total fluorine play a key role in judging whether the tail gas emission of a hazardous waste burning system is qualified or not, particularly, the compatibility of the burning materials needs to judge whether the hazardous waste is burnt or not according to the total sulfur and total chlorine content, whether sulfur dioxide, hydrogen chloride and hydrogen fluoride in the smoke can reach the emission standard or not, and an effective method which can accurately detect the total sulfur and total chlorine and total fluorine in the hazardous waste does not exist in the prior art, and urgent improvement is needed.

Disclosure of Invention

The invention aims to provide a detection method for incineration type hazardous wastes so as to solve the problems in the background technology.

The technical problem solved by the invention is realized by adopting the following technical scheme:

a detection method for incineration type hazardous wastes comprises the following steps:

1) taking the incineration type hazardous waste as a sample, and weighing the sample;

2) fully burning the weighed sample in a calorimeter;

3) collecting all solutions generated by sample combustion in a calorimeter, and fixing the volume of the solutions to L by using deionized water to obtain a solution to be measured;

4) detecting the sulfur content of the solution to be detected;

5) detecting the chlorine content of the solution to be detected;

6) detecting the fluorine content of the solution to be detected;

7) the total sulfur, total chlorine and total fluorine contents of the burned samples were calculated according to the following formulas:

wherein:

w is the total sulfur, total chlorine and total fluorine content after incineration of the product,%;

m₀: sample weighing, g, of the sample;

c₀: the concentration of sulfate, chloride, total fluorine in the aqueous solution to be tested, mg/L.

Further, in step 1), the sample was weighed using a balance with an accuracy of 0.0001.

Further, in step 2), the calorimeter is an oxygen bomb calorimeter.

Further, in step 3), the collected solution includes liquid generated in an oxygen bomb of the oxygen bomb calorimeter and tail liquid.

Further, in the step 4), the method for detecting the sulfur content is a barium chromate ultraviolet spectroscopy.

Further, in the step 5), the chlorine content detection method is a silver chloride automatic potentiometric titrator method.

Further, in the step 6), the method for detecting the fluorine content is an ion activity meter method.

Has the advantages that: the detection method of the incineration hazardous waste can guide laboratories or manufacturers in the hazardous waste industry to detect total sulfur, total chlorine and total fluorine in the incineration hazardous waste, and further guide compatibility treatment before incineration of the hazardous waste, reduce subsequent tail gas treatment procedures and reduce air pollution. The method disclosed by the invention is simple to operate and does not need a complex pretreatment process.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1

The embodiment provides a detection method for incineration hazardous waste, which selects 8 different hazardous waste samples for detection. Respectively pharmaceutical raw material waste liquid, organic salt slag, organic cleaning waste liquid, organic halide waste, organic residue, oil-water mixture, paint slag and sludge. The method comprises the following steps:

1) taking the incineration type hazardous waste as a sample, and weighing the sample; weighing the sample by using a balance with the precision of 0.0001;

2) fully burning the weighed sample in a calorimeter; the calorimeter is an oxygen bomb calorimeter;

3) collecting all solutions generated by combustion of a sample in the calorimeter, wherein the collected solutions comprise liquid generated in an oxygen bomb of the oxygen bomb calorimeter and tail liquid; fixing the volume of the solution to 250ml by using deionized water to obtain a solution to be detected;

4) detecting the sulfur content of the solution to be detected; the sulfur content detection method is a barium chromate ultraviolet spectroscopy method; obtaining the sulfate radical content;

5) detecting the chlorine content of the solution to be detected; the sulfur content detection method is a silver chloride automatic potentiometric titrator method to obtain chloride content;

6) detecting the fluorine content of the solution to be detected; the fluorine content detection method is an ion activity meter method to obtain the fluoride content;

7) the total sulfur, total chlorine and total fluorine contents of the burned samples were calculated according to the following formulas:

wherein:

w is the total sulfur, total chlorine and total fluorine content after incineration of the product,%;

m₀: sample weighing, g, of the sample;

l is 250 ml;

c₀: the concentration of sulfate, chloride, total fluorine in the aqueous solution to be tested, mg/L.

Table one example 1 test results

Example 2

Example 1

The embodiment provides a detection method for incineration hazardous waste, which selects 8 different hazardous waste samples for detection. Respectively waste PVC glue, waste catalyst, waste activated carbon, waste engine oil, waste glue, waste mineral oil, waste halogenated organic solvent and waste paint slag. The method comprises the following steps:

1) taking the incineration type hazardous waste as a sample, and weighing the sample; weighing the sample by using a balance with the precision of 0.0001;

2) fully burning the weighed sample in a calorimeter; the calorimeter is an oxygen bomb calorimeter;

3) collecting all solutions generated by combustion of a sample in the calorimeter, wherein the collected solutions comprise liquid generated in an oxygen bomb of the oxygen bomb calorimeter and tail liquid; fixing the volume of the solution to 250ml by using deionized water to obtain a solution to be detected;

4) detecting the sulfur content of the solution to be detected; the sulfur content detection method is a barium chromate ultraviolet spectroscopy method; obtaining the sulfate radical content;

5) detecting the chlorine content of the solution to be detected; the sulfur content detection method is a silver chloride automatic potentiometric titrator method to obtain chloride content;

6) detecting the fluorine content of the solution to be detected; the fluorine content detection method is an ion activity meter method to obtain the fluoride content;

7) the total sulfur, total chlorine and total fluorine contents of the burned samples were calculated according to the following formulas:

wherein:

w is the total sulfur, total chlorine and total fluorine content after incineration of the product,%;

m₀: sample weighing, g, of the sample;

l is 250 ml;

c₀: the concentration of sulfate, chloride, total fluorine in the aqueous solution to be tested, mg/L.

Table two example 2 test results

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.