JP2007216078A - Treatment method of harmful waste and harmful matter sealing and solidifying agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a treatment method of harmful waste capable of easily and certainly detoxifying and sealing harmful matter by a reduced number of treatment processes to utilize the treated matter as aggregate, a road bed material, regenerated broken stone or the like, and a harmful matter sealing and solidifying agent. <P>SOLUTION: The treatment method of the harmful waste is constituted of a detoxification process for charging a harmful substance such as incineration ash, soil, sludge, etc. containing the harmful matter, an additive, which contains a harmless metal ions being alkaline earth metal ions and an anionic polymeric substance, and the harmful matter sealing and solidifying agent comprising cement in a kneader and kneading them to detoxify the harmful substance and a processing process for processing the detoxified substance into the harmful matter sealing and solidifying agent usable as aggregate, the read bed material, a building material, regenerated sand, regenerated broken stone, etc. after the detoxification process. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a method for treating hazardous waste and detoxifying and solidifying the hazardous substance by detoxifying harmful substances such as incinerated ash, soil, and sludge containing harmful substances so that they can be used for aggregates, roadbed materials, recycled crushed stones, etc. It relates to the agent.

Various conventional methods for detoxifying harmful substances such as incinerated ash, soil, and sludge containing harmful substances have been considered, but all of them have the disadvantages of being troublesome and costly.
nothing special

  In view of the above-described conventional drawbacks, the present invention is easy to handle, and reliably detoxifies and blocks harmful substances, and can be used as aggregates, roadbed materials, recycled crushed stones, etc. It is an object to provide a method and a hazardous material sequestering and solidifying agent.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above-mentioned object, the present invention contains harmful substances such as incinerated ash, soil, sludge, etc. containing harmful substances and innocuous metal ions of alkaline earth metal ions and anionic polymer substances. A detoxification process in which a harmful substance sequestering and solidifying agent composed of an additive and cement is added and detoxified by kneading, and after this detoxification process, aggregate, roadbed material, building material, recycled sand, recycled crushed stone And a processing method of processing into a hazardous material sequestering and solidifying material that can be used as, for example, constitutes a hazardous waste processing method.

The present invention relates to harmful substances such as incinerated ash, soil, sludge, etc. containing harmful substances in a kneading machine, and harmless metal ions and anionic polymer substances of 5 to 15% by weight of the alkaline earth metal ions. A detoxification process in which an additive contained and a harmful substance sequestering and solidifying agent composed of 5 to 15% by weight of the above-mentioned harmful substance are added and kneaded to detoxify, and aggregate after this detoxification process It forms a hazardous waste processing method with processing steps that process it into a sequestering and solidifying material that can be used as roadbed materials, building materials, recycled sand, recycled crushed stone, and the like.

  In the present invention, an additive containing an innocuous metal ion of an alkaline earth metal ion and an anionic polymer substance and a cement constitute a harmful substance sequestering and solidifying agent.

  As is clear from the above description, the present invention has the following effects.

(1) Hazardous substances consisting of cement containing additives containing harmful substances such as incinerated ash, soil, sludge, etc., and non-toxic metal ions of alkaline earth metal ions and anionic polymer substances containing harmful substances in the kneader A detoxification process in which a material sequestering agent is added and kneaded to detoxify, and after this detoxification process, sequestering and solidification of harmful substances that can be used as aggregates, roadbed materials, building materials, recycled sand, recycled crushed stones, etc. Since it comprises a processing step for processing into a material, the harmful substance can be rendered harmless with an additive containing a harmless metal ion of an alkaline earth metal ion and an anionic polymer substance.

(2) According to the above (1), a substance detoxified by cement can be solidified and used as aggregate, roadbed material, building material, recycled sand, recycled crushed stone, and the like.
Therefore, it is economical and can be used effectively.

(3) According to the above (1), since it is a kneader, an additive, and cement, it can be carried out easily.

(4) Claims 2, 3, and 4 can provide the same effects as the above (1) to (3).

  Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.

  In the best mode for carrying out the present invention shown in FIGS. 1 to 5, reference numeral 1 denotes a hazardous waste processing method according to the present invention, and this hazardous waste processing method 1 is harmful to the kneader 2. An incinerated ash 3 containing harmful substances as substances, an innocuous metal ion 4 of alkaline earth metal ions 5 to 10% by weight of the incinerated ash 3, an additive 6 containing an anionic polymer substance 5 and , A detoxification step 9 for detoxifying the mixture by injecting a harmful substance sequestering and solidifying agent 8 comprising 5 to 10% by weight of cement 7 with respect to the incinerated ash 3, and bone after the detoxification step 9 And a processing step 11 for processing into a hazardous material sealing and solidifying material 10 that can be used as materials, roadbed materials, building materials, recycled sand, recycled crushed stones, and the like.

  As shown in FIG. 4, the additive 6 includes 25% by weight of the harmless metal ions 4 of alkaline earth metal ions, 40 to 50% by weight of the anionic polymer substance 5, and the remaining amount of water 12. It is a mixture.

When the incinerated ash 3 is processed into the hazardous material sealing solidified material 10 by the above hazardous waste processing method 1, as shown in the dissolution test result shown in FIG. Hazardous substances were not detected.
[Different forms for carrying out the invention]

  Next, different modes for carrying out the present invention shown in FIGS. 6 to 9 will be described. In the description of these different modes for carrying out the present invention, the same components as those in the best mode for carrying out the present invention are designated by the same reference numerals and redundant description is omitted. To do.

  The second embodiment for carrying out the present invention shown in FIGS. 6 and 7 is mainly different from the best first embodiment for carrying out the present invention in that the soil contains harmful substances as harmful substances. 13, the detoxification step 9A is performed, and even when the hazardous waste processing method 1A configured using the detoxification step 9A is performed, the best first for carrying out the present invention is described. The same effect as that of the embodiment can be obtained.

  The third embodiment for carrying out the present invention shown in FIG. 8 and FIG. 9 is mainly different from the first embodiment for carrying out the present invention in that it contains harmful substances as harmful substances. Since the detoxification step 9B is performed using the sludge 14, even if the hazardous waste processing method 1B configured using the detoxification step 9B is performed, the best first for carrying out the present invention is described. The same effect as that of the first embodiment can be obtained.

  In each of the embodiments for carrying out the present invention, the detoxification steps 9, 9A, and 9B have been described using additives 6 and cement 7. However, the present invention is not limited to this, and the moisture content of harmful substances Depending on the condition, a necessary amount of water may be added.

  INDUSTRIAL APPLICATION This invention is utilized in the industry which processes a hazardous waste, and the industry which manufactures a hazardous | toxic substance sequestration solidifying agent.

FIG. 3 is a process diagram of the best first embodiment for carrying out the present invention. Explanatory drawing of the detoxification process of the best 1st form for implementing this invention. Explanatory drawing of the process of the best 1st form for implementing this invention. Explanatory drawing of the additive of the best 1st form for implementing this invention. Explanatory drawing which shows the dissolution test result of the best 1st form for implementing this invention. Process drawing of the 2nd form for implementing this invention. Explanatory drawing of the detoxification process of the 2nd form for implementing this invention. Process drawing of the 3rd form for implementing this invention. Explanatory drawing of the detoxification process of the 3rd form for implementing this invention.

Explanation of symbols

1, 1A, 1B: hazardous waste treatment method,
2: Kneading machine, 3: Incineration ash,
4: Harmless metal ion of alkaline earth metal ion,
5: Anionic polymer substance, 6: Additive,
7: Cement, 8: Hazardous material sequestering and solidifying agent,
9, 9A, 9B: detoxification process, 10: hazardous material sealing solidifying material,
11: Processing step, 12: Water,
13: soil, 14: sludge.

Claims (4)

Kneading machine contains harmful substances such as incinerated ash, soil, sludge, etc. that contain harmful substances, non-toxic metal ions of alkaline earth metal ions, and additives containing anionic polymer substances, and cement and solidifies the hazardous substances. Detoxification process that mixes and detoxifies, and after this detoxification process, it is processed into a hazardous material sealing solidified material that can be used as aggregate, roadbed material, building material, recycled sand, recycled crushed stone, etc. The processing method of the hazardous waste characterized by including the processing process to perform. Additives containing harmful substances such as incinerated ash, soil, sludge, etc. containing harmful substances in the kneading machine and harmless metal ions of 5-15% by weight of the alkaline earth metal ions and anionic polymer substances. A detoxification process in which a detoxifying agent and 5-15% by weight of the toxic substance cement is added, and a detoxification process for kneading and detoxifying, and an aggregate and a roadbed material after the detoxification process And a processing step of processing into a hazardous material sealing solidified material that can be used as building materials, recycled sand, recycled crushed stone, and the like. A hazardous substance sequestering and solidifying agent comprising an additive containing an innocuous metal ion of an alkaline earth metal ion and an anionic polymer substance, and cement. Harmful, characterized by comprising an additive in which 25% by weight of harmless metal ions of alkaline earth metal ions, 40 to 50% by weight of anionic polymer substance and the remaining amount of water are mixed, and cement. Sequestration solidifying agent.

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