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Process of repairing heavy metal polluted soil with both Agricus placomyces Peck and stropharia rugosoanulata Farlow

The technology of the bell mushroom and the double-ring mushroom is applied in the field of resources and environment, which can solve the problems of long growth cycle of plants and troublesome follow-up treatment, and achieve the effect of short growth cycle and strong ability.

Inactive Publication Date: 2011-05-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Advantages of phytoremediation: easy planting, large enrichment, heavy metals in the soil can be removed; disadvantages of phytoremediation: long plant growth cycle (1 year for herbs, 3-5 years for woody plants, seriously affecting agricultural production), troublesome follow-up treatment (incineration It is the main technology, but it pollutes the air) and the plants are not easy to rot, so that the existing phytoremediation technology actually only plays a role in enriching and concentrating heavy metal ions in the soil. After the heavy metal ions are absorbed and transported from the soil to the plant, although the soil However, the heavy metal ions have not been completely removed from the environment, and they still exist in the plants in the environment. Whether it is burned or decayed, the heavy metal ions enriched in the plants will return to the environment or soil. The role of pollution transport to other areas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this example, the two-ringed mushroom and the stropharia stropharia were jointly planted on the polluted soil to in-situ enrich metals such as cadmium (Cd), lead (Pb), chromium (Cr), copper (Cu), and zinc (Zn) in the soil. ion.

[0026] Restoration process: preparation of mushroom culture medium → fermentation of base material → preparation of mushroom strains → laying of fermented base material in soil → planting two types of mushrooms in polluted soil (in-situ restoration of polluted soil) → growth of mushrooms and enrichment of heavy metals → Harvest mushrooms → prepare mushroom slurry enriched with heavy metal mushrooms → put the mushroom slurry into a plastic electrophoresis tank, adjust the pH value and electrolyte solution → insert the electrophoresis tank into a two-electrode system of anode and cathode, connect the DC stabilized power supply, Regulate the voltage → electrolytically analyze the metal ions (cadmium, lead, chromium, copper, zinc) in the mushroo...

Embodiment 2

[0049] In this example, heavy metals are removed ectopically by a box-type multi-zone cultivation system (restored by moving soil and planting mushrooms). By collecting heavy metal-contaminated soil, and cultivating double-ringed mushrooms and stropharia stropharia, metal ions such as cadmium, lead, chromium, copper, and zinc in the soil can be enriched.

[0050] Restoration process: preparation of mushroom culture medium → fermentation of base material → preparation of mushroom strains → laying of fermented base material in box-type soil → collection of heavy metal contaminated soil layer → ectopic covering of polluted soil interplanting mushrooms Bicyclic mushroom and wrinkled globe Stropharia → Mushroom growth and enrichment of heavy metals → Harvesting of mushrooms → Preparation of mushroom slurry from mushrooms enriched with heavy metals → Put the mushroom slurry into a plastic electrophoresis tank, adjust the pH value and electrolyte → Insert the anode and cathode into th...

Embodiment 3

[0058] In this example, heavy metals are removed ectopically by a box-type multi-zone cultivation system (restored by moving soil and planting mushrooms). By collecting heavy metal-contaminated soil, and cultivating double-ringed mushrooms and stropharia stropharia, metal ions such as cadmium, lead, chromium, copper, and zinc in the soil can be enriched.

[0059] The restorative process of this example is the same as that of the second embodiment except for the follow-up treatment.

[0060] The subsequent processing steps of this example are as follows:

[0061] After about 3 months, the double-ringed mushroom and the stropharia stropharia are mature, harvest the mushrooms, smash, homogenize, rot, filter, and make 0.8 liters of mushroom slurry per kilogram of fresh mushrooms, add Na 2 S 2 o 5 / H 2 SO 4 After acidification (pH2-3), add chelating agent / NaOH (pH8-9) for chelating reaction, then add precipitant or flocculant to obtain heavy metal ion compound precipitation. ...

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Abstract

The present invention relates to environment protecting technology, and is technological process of repairing heavy metal polluted soil with Agaricus placomyces Peck and Stropharia rugosoanulata Farlow. The technological process includes cultivating Agaricus placomyces Peck and Stropharia rugosoanulata Farlow in heavy metal polluted soil, collecting mature Agaricus placomyces Peck and Stropharia rugosoanulata Farlow, treating to obtain slurry containing heavy metal, and chemical electrophoresis or chelating precipitation to eliminate heavy metal ion from the slurry. The present invention utilizes Agaricus placomyces Peck and Stropharia rugosoanulata Farlow with short growth period, powerful heavy metal ion enriching capacity and other features as main biological enriching devices and other simple chemical processes, and has high heavy metal ion eliminating rate.

Description

Technical field: [0001] The invention belongs to the technical field of resources and environment, and in particular relates to a method for jointly repairing soil polluted by heavy metals with double-ring mushrooms and stropharia rugosa. Background technique: [0002] Soil is the main material basis for human survival. With the process of industrialization and urbanization, soil heavy metal pollution is becoming more and more serious, including cadmium (Cd), lead (Pb), chromium (Cr), mercury (Hg), arsenic (As) , Nickel (Ni), copper (Cu), zinc (Zn) etc. are more common heavy metal pollution. The world's average annual emission of Hg is about 15,000 tons, Cu is 3.4 million tons, Pb is 5 million tons, Mn is 15 million tons, and Ni is 1 million tons, which seriously pollutes the environment. At present, the farmland soil polluted by heavy metals in my country is about 2500×10 4 Hectares, as many as 12 million tons of grain are polluted by heavy metals every year, causing dire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/10C02F1/62
Inventor 徐恒宋鹏陈坤季金虎雷雨陈兰
Owner SICHUAN UNIV
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