TREATING AGENT FOR REFUSE-INCINERATION DUST AND TREATMENT METHOD

PURPOSE: To surely stabilize the heavy metal in dust at a low cost and to eliminate secondary pollution by composing a treating agent of an alkali metal silicate as the main component, adding the agent to a refuse-incineration dust along with water and kneading the mixture to treat the dust. CONSTIT...

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Bibliographic Details
Main Author EBATA MIKIO
Format Patent
LanguageEnglish
Published 19.11.1996
Edition6
Subjects
CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS
DISPOSAL OF SOLID WASTE
FIRE-FIGHTING
HUMAN NECESSITIES
LIFE-SAVING
PERFORMING OPERATIONS
RECLAMATION OF CONTAMINED SOIL SOIL
TRANSPORTING
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Summary:PURPOSE: To surely stabilize the heavy metal in dust at a low cost and to eliminate secondary pollution by composing a treating agent of an alkali metal silicate as the main component, adding the agent to a refuse-incineration dust along with water and kneading the mixture to treat the dust. CONSTITUTION: When the elution of the heavy metal in the dust generated as refuse is incinerated in a waste treatment plant, etc., a treating agent consisting essentially of an alkali metal silicate is composed, and the silicate can be allowed to exist as water glass. The treating agent is added to the refuse-incineration ash along with water, and the mixture is kneaded to treat the dust. Further, the treating agent is added by 1-7wt.% as SiO2 , based on the dust. Although the silicate is not specially restricted, sodium orthosilicate, sodium metasilicate, etc., are exemplified.
Bibliography:Application Number: JP19950113438