Microbial method for quickly treating lead and zinc polluted water

Abstract

The invention discloses a microbial method for quickly treating a lead and zinc polluted water. The microbial method comprises the following three steps: purification culture of microorganisms, complexation of heavy metal ions and catalysis on lead and zinc ion adsorption, and is characterized in that the purification culture of the microorganisms at least comprises the purification culture of penicillium chrysogenum and bacillus; the complexation of the heavy metal ions specifically comprises complexation of nitrogen, oxygen, sulfur, phosphorus and other atoms on phosphoryl groups or carboxy groups on the surface of the penicillium chrysogenum or the bacillus with lead and zinc ions; a catalyst used during the catalysis on the lead and zinc ion adsorption is a synthesis promoting enzyme; the purification culture of the penicillium chrysogenum and the bacillus at least comprises the following steps: 1, strain purification; 2, culture of a target strain; 3, microorganism preservation and preparation of a microbial preparation. The microbial method for quickly treating the lead and zinc polluted water is a heavy metal treatment method capable of treating lead and zinc pollution of the water, achieving in-situ repair, avoiding secondary pollution to the environment and having high degradation efficiency.

Description

technical field [0001] The invention relates to the field of heavy metal prevention and control, in particular to a microbial method for rapidly treating lead-zinc polluted water bodies. Background technique [0002] my country is relatively rich in lead-zinc mine resources. With the rapid development of mining and dressing of mineral resources, the pollution problem of lead-zinc mines has become increasingly serious. The main pollution of lead-zinc mines is tailings pollution and pollution generated during the smelting process. The environmental pollution of lead-zinc mines is mainly the pollution of heavy metals lead and zinc. Lead-zinc mining areas and lead-zinc smelters have a great impact on the surrounding environment. These heavy metals have polluted local soil, plants, microorganisms, water bodies, and air. Heavy metal pollution has a great impact on the growth and health of humans and animals. Since this pollution stays in the soil, water and atmosphere for a long...

AI Technical Summary

Problems solved by technology

[0003] Among the relevant patents that have been applied in China, the patent "Composite microbial remediation agent for lead-zinc contaminated soil and its preparation method" (application number: 201510301441.X, publication date: 2015-11-11) discloses a method using Micrococcus flavum and The method for adsorption and passivation of heavy metal lead and zinc by Pseudomonas saccharolyticum, because the main strains Micrococcus flavum and Pseudomonas saccharolyticus are aerobic bacteria, that is, it can only be used for dry and ventilated soil treatment, and cannot be used for Water body treatment, on the other hand, this method does not use catalytic enzymes with specific functions, and the degradation efficiency is low; the patent "method for combined treatment of lead and zinc pollution with surfactant and chelating agent and its eluent" (application number: 201310494162.0, Publication date: 2014-02-05) discloses a method of using Na2-EDTA and saponin to wash soil contaminated by lead and zinc. The principle is to promote the complexation reaction with heavy metals by using biosurfactants, and then The fixed heavy metals are leached out of the soil. This method is also only applicable to the soil, and there is no way to achieve in-situ repair. Moreover, Na2-EDTA in the two active ingredients is not easy to be naturally degraded, which will cause secondary pollution of the soil. In addition, the leached out Heavy metal ions can also cause secondary pollution