33results about How to "Natural tolerance" patented technology

The invention provides a Cr (VI) heavy polluted soil in-situ restoration method. According to the method, firstly, a chemical reduction agent is injected into soil in situ; high-concentration Cr (VI) is subjected to primary reduction, so that the high-concentration hexavalent Cr cannot generate a toxic effect on the subsequent microorganism ecologic microbial inoculum; then, biogas residue, a carbon source and sulphate are prepared into the ecologic microbial inoculum to be injected into the Cr-containing soil in situ in a pressurizing way; by adopting a special maintenance mode, a large-scale reduction buffer belt containing sulphate reduction bacteria and sulfides is formed in the underground soil of a site; and the Cr (VI) is continuously and effectively reduced. The method has the advantages that the hexavalent Cr can be effectively reduced, and meanwhile, the cost is reduced.

The invention adopts an in-situ and ex-situ coupling detoxification method for Cd in a heavily polluted site, prepares sludge, carbon source and sulfate into medicaments and applies them to Cd-containing soil, and then adopts special construction and maintenance methods to restore ecological bacteria. The agent gradually penetrates into the ground and reduces the Cd in the deep contaminated soil. This method can remediate the Cd-containing sites with high pollution depth at low cost and high efficiency, and treat the sludge with waste treatment at the same time.

The present invention adopts a detoxification method of in-situ and ex-situ coupling of Cu in heavily polluted sites. Sludge, carbon source and ferrous sulfate are formulated into medicaments and applied to Cu-containing soil, and then special construction and maintenance methods are adopted to restore the ecology. The bacterial agent gradually penetrates into the ground and restores Cu in the deep contaminated soil. This method can remediate Cu-containing sites with high pollution depth at low cost and high efficiency, and at the same time treat waste with waste, and treat the sludge.

The present invention adopts an in-situ and ex-situ coupling detoxification method of Cd in heavily polluted sites based on biogas residues. Biogas residues, carbon sources, and sulfates are prepared into medicaments and applied to Cd-containing soils, and then special construction and maintenance methods are adopted. Make the reducing ecological bacterial agent gradually seep into the ground, and reduce the Cd in the deep polluted soil. This method can remediate Cd-containing sites with high pollution depth at low cost and high efficiency, and at the same time treat waste with waste, and treat the biogas residue.

The present invention adopts an in-situ and ex-situ coupling detoxification method for heavily polluted Sb based on biogas residues. Biogas residues, carbon sources, and sulfates are prepared into medicaments and applied to Sb-containing soils, and then special construction and maintenance methods are adopted. Make the reducing ecological bacterial agent gradually penetrate into the ground, and restore the Sb in the deep polluted soil. This method can remediate Sb-containing sites with high pollution depth at low cost and high efficiency, and at the same time treat waste with waste, and treat biogas residue.

The present invention adopts an in-situ and ex-situ coupling detoxification method for Pb in heavily polluted sites based on biogas residues. Biogas residues, carbon sources, and sulfates are prepared into medicaments and applied to Pb-containing soils, and then special construction and maintenance methods are adopted. Make the reducing ecological bacterial agent gradually seep into the ground, and reduce the Pb in the deep polluted soil. This method can remediate Pb-containing sites with high pollution depth at low cost and high efficiency, and at the same time treat waste with waste, and treat the biogas residue.

The present invention adopts a Zn in-situ and ex-situ coupling detoxification method based on biogas residues in heavily polluted sites. Biogas residues, carbon sources, and sulfates are prepared into medicaments and applied to Zn-containing soils, and then special construction and maintenance methods are adopted. Make the reducing ecological bacterial agent gradually seep into the ground, and restore Zn in the deep contaminated soil. This method can remediate Zn-containing sites with high pollution depth at low cost and high efficiency, and at the same time treat waste with waste, and treat the biogas residue.

The present invention adopts a detoxification method of in-situ and ex-situ coupling of Hg in heavily polluted sites. Sludge, carbon sources and sulfates are prepared into medicaments and applied to Hg-containing soils, and then special construction and maintenance methods are adopted to make the reduction of ecological bacteria The agent gradually penetrates into the ground and restores the Hg in the deep polluted soil. This method can remediate Hg-containing sites with high pollution depth at low cost and high efficiency, and at the same time treat waste with waste, and treat sludge.