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 provides a method for treating Cr(VI) in polluted soil by using biogas residue bacterial agent and ferrous sulfate coupling, the soil treated with biogas residue bacterial agent and the soil treated with ferrous sulfate are superimposed and mixed, and the biogas residue bacterial agent is used to The sulfate-reducing bacteria reduce the sulfate in ferrous sulfate to generate sulfide, which can avoid the secondary pollution of sulfate while reducing hexavalent chromium more effectively.

The invention provides a method for preparing an efficient ecological restoration flora for a Cr (VI)-containing site by utilizing biogas residue. According to the method, by adding a carbon source and sulfate into the biogas residue, a sulfate reducing flora in the biogas residue rapidly grows, and sulfides are generated at the same time; then, chromate is added into the biogas residue, and the sulfides capable of inhibiting the growth of the sulfate reducing bacteria are consumed; due to the existence of the sulfides, the toxicity of the chromate to the sulfate reducing bacteria is greatly reduced, and the Cr (VI) resistance of the cultured sulfate reducing flora is also improved.

The invention discloses a novel contaminated site Hg in-situ detoxifying method based on biogas residues. The biogas residues, a carbon source and sulfate are prepared into an agent to be injected into Hg-containing soil in situ, then, a special construction and maintenance manner is adopted, fixed ecological fungicide gradually seeps into the ground, and the deep layer contaminated soil Hg is fixed. According to the method, the Hg-containing site with the high pollution depth can be repaired with the low cost and high efficiency, meanwhile, waste is treated through waste, and the biogas residues are treated.

The invention provides a novel pollution site Zn in-situ detoxification method. Sludge, a carbon source and sulfate are prepared into chemical agents to be injected into Zn-containing soil in an in-situ manner; and then a special constructing and curing manner is adopted, and a fixation ecological bacterium agent is made to gradually permeate into the underground to fix Zn of the deep-layer polluted soil. By means of the method, the Zn-containing site large in pollution depth can be efficiently restored at low cost; and meanwhile, waste is treated through waste, and the sludge is treated.

The invention provides a method for preparing an efficient ecological restoration flora for a Sb (V)-polluted site by utilizing sludge. According to the method, by adding a carbon source and sulfate into the sludge, a sulfate reducing flora in the sludge rapidly grows, and sulfides are generated at the same time; then, antimonate is added into the sludge, and the sulfides capable of inhibiting the growth of the sulfate reducing bacteria are consumed; due to the existence of the sulfides, the toxicity of the antimonate to the sulfate reducing bacteria is greatly reduced, and the Sb resistance of the cultured sulfate reducing flora is also improved.

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 for Pb in heavily polluted sites. Sludge, carbon sources, and sulfates are formulated into medicaments and applied to Pb-containing soils, and then special construction and maintenance methods are adopted to reduce the ecological bacteria. The agent gradually penetrates into the ground and restores Pb in the deep contaminated 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 sludge.

The present invention adopts a Zn in-situ and ex-situ coupling detoxification method for heavily polluted sites. Sludge, carbon sources and sulfates are formulated into medicaments and applied to Zn-containing soils, and then special construction and maintenance methods are adopted to reduce ecological bacteria. The agent gradually penetrates into the ground and restores 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 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 invention provides a method for preparing efficient ecological restoration floras for an Hg contaminated site from biogas residues. A carbon source and sulfate are added into the biogas residues, sulfate reducing floras in the biogas residues are made to grow rapidly, and meanwhile sulfide is generated; next, mercuric salt is added to consume the sulfide inhibiting growth of sulfate reducing bacteria, the toxicity of the mercuric salt on the sulfate reducing bacteria is greatly lowered due to existence of the sulfide, and meanwhile Hg resistance of the cultured sulfate reducing floras is improved.

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 an in-situ and ex-situ coupling detoxification method of Cu in heavily polluted sites based on biogas residues. Biogas residues, carbon sources, and ferrous sulfate are formulated into medicaments and applied to Cu-containing soils, and then special construction and maintenance methods are adopted. , so that the reducing ecological bacteria agent gradually penetrates into the ground, and restores Cu in the deep polluted 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 biogas residue.

The invention provides a method for preparing an efficient ecological restoration flora for a Cu-polluted site by utilizing sludge. According to the method, by adding a carbon source and sulfate into the sludge, a sulfate reducing flora in the sludge rapidly grows, and sulfides are generated at the same time; then, copper salt is added into the sludge, and the sulfides capable of inhibiting the growth of the sulfate reducing bacteria are consumed; due to the existence of the sulfides, the toxicity of the copper salt to the sulfate reducing bacteria is greatly reduced, and the Cu resistance of the cultured sulfate reducing flora is also improved.

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.

The present invention adopts an in-situ and ex-situ coupling detoxification method for Sb in heavily polluted sites. Sludge, carbon sources and sulfates are prepared into medicaments and applied to Sb-containing soil, and then special construction and maintenance methods are adopted to make the ecological bacteria The agent gradually penetrates into the ground and restores Sb in the deep contaminated 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 the sludge.