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HEAVY METAL INSOLUBILIZED COMPOSITION AND METHOD FOR REPAIRING HEAVY METAL CONTAMINATED SOIL
PROBLEM TO BE SOLVED: To provide a heavy metal insolubilized composition high in fluidity, good in permeability into the soil and excellent in the insolubilization effect of heavy metals, and a method for repairing heavy metal contaminated soil excellent in the insolubilization effect of heavy metals in heavy metal contamination soil and capable of easily treating heavy metal contaminated soil at the original position.SOLUTION: Provided is a heavy metal insolubilized composition containing urease generated microorganisms, urea, calcium ions and iron ions, in which, provided that the content of the calcium ions is defined as A(mg/L) and the content of the iron ions is defined as B(mg/L), the relation between the A and B satisfies the conditions of the following inequality (1), the following inequality (2) and the following inequality (3). Also provided is a method for repairing heavy metal contaminated soil including the process of injecting the heavy metal insolubilized composition into treatment object soil: the inequality (1):2/1≤A/B≤20/1(based on mass), the inequality (2):54 mg/L≤A≤3,000 mg/L and the inequality (3):15 mg/L≤B≤300 mg/L.SELECTED DRAWING: Figure 1
【課題】流動性が高く、土壌への浸透性が良好であり、重金属の不溶化効果に優れた重金属不溶化処理組成物、及び、重金属汚染土壌における重金属の不溶化効果に優れ、重金属汚染土壌を原位置で簡易に処理することができる重金属汚染土壌の修復方法を提供する。【解決手段】ウレアーゼ生成微生物と、尿素と、カルシウムイオンと、鉄イオンと、を含み、カルシウムイオンの含有量をＡ（ｍｇ／Ｌ）とし、鉄イオンの含有量をＢ（ｍｇ／Ｌ）としたとき、ＡとＢとの関係が、下記式（１）、下記式（２）及び下記式（３）の条件を満たす重金属不溶化処理組成物、及び前記重金属不溶化処理組成物を処理対象土壌に注入することを含む、重金属汚染土壌の修復方法。式（１）：２／１≦Ａ／Ｂ≦２０／１（質量基準）、式（２）：５４ｍｇ／Ｌ≦Ａ≦３０００ｍｇ／Ｌ、式（３）：１５ｍｇ／Ｌ≦Ｂ≦３００ｍｇ／Ｌ【選択図】図１
HEAVY METAL INSOLUBILIZED COMPOSITION AND METHOD FOR REPAIRING HEAVY METAL CONTAMINATED SOIL
PROBLEM TO BE SOLVED: To provide a heavy metal insolubilized composition high in fluidity, good in permeability into the soil and excellent in the insolubilization effect of heavy metals, and a method for repairing heavy metal contaminated soil excellent in the insolubilization effect of heavy metals in heavy metal contamination soil and capable of easily treating heavy metal contaminated soil at the original position.SOLUTION: Provided is a heavy metal insolubilized composition containing urease generated microorganisms, urea, calcium ions and iron ions, in which, provided that the content of the calcium ions is defined as A(mg/L) and the content of the iron ions is defined as B(mg/L), the relation between the A and B satisfies the conditions of the following inequality (1), the following inequality (2) and the following inequality (3). Also provided is a method for repairing heavy metal contaminated soil including the process of injecting the heavy metal insolubilized composition into treatment object soil: the inequality (1):2/1≤A/B≤20/1(based on mass), the inequality (2):54 mg/L≤A≤3,000 mg/L and the inequality (3):15 mg/L≤B≤300 mg/L.SELECTED DRAWING: Figure 1
【課題】流動性が高く、土壌への浸透性が良好であり、重金属の不溶化効果に優れた重金属不溶化処理組成物、及び、重金属汚染土壌における重金属の不溶化効果に優れ、重金属汚染土壌を原位置で簡易に処理することができる重金属汚染土壌の修復方法を提供する。【解決手段】ウレアーゼ生成微生物と、尿素と、カルシウムイオンと、鉄イオンと、を含み、カルシウムイオンの含有量をＡ（ｍｇ／Ｌ）とし、鉄イオンの含有量をＢ（ｍｇ／Ｌ）としたとき、ＡとＢとの関係が、下記式（１）、下記式（２）及び下記式（３）の条件を満たす重金属不溶化処理組成物、及び前記重金属不溶化処理組成物を処理対象土壌に注入することを含む、重金属汚染土壌の修復方法。式（１）：２／１≦Ａ／Ｂ≦２０／１（質量基準）、式（２）：５４ｍｇ／Ｌ≦Ａ≦３０００ｍｇ／Ｌ、式（３）：１５ｍｇ／Ｌ≦Ｂ≦３００ｍｇ／Ｌ【選択図】図１
HEAVY METAL INSOLUBILIZED COMPOSITION AND METHOD FOR REPAIRING HEAVY METAL CONTAMINATED SOIL
重金属不溶化処理組成物及び重金属汚染土壌の修復方法
OKUDA NOBUYASU (author) / TANIGAWA TOMOHIRO (author) / TANABE KOTA (author) / HATAKE TOSHIRO (author) / MIZUTANI SURYO (author) / SHINONAGA TATSUTAKE (author)
2016-12-28
Patent
Electronic Resource
Japanese
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