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Soil remediation method and application thereof

A soil remediation and soil technology, applied in the field of soil remediation, can solve the problems of high content of toxic salts, difficult to decompose naturally, and clean up, and achieve the effect of simple implementation, low cost, and promotion of activity.

Inactive Publication Date: 2015-10-07
黄晓东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cause heavy metals, hydrocarbon compounds and various toxic salts to be too high in the soil, and it is difficult to eliminate them by natural decomposition for a long time

Method used

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  • Soil remediation method and application thereof
  • Soil remediation method and application thereof
  • Soil remediation method and application thereof

Examples

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Embodiment 1

[0060] Such as figure 1 Shown is the remediation process of heavy metal-contaminated soil in North China (Shandong Province). The soil contains 900-1200 mg / kg heavy metal copper (Cu); the area is 5 mu, and the land was prepared in April 2010, leveled, fertilized (N:P:k:10:10:5 kg / mu), and repaired biological agents (100 kg / mu) and rotary tillage; sowing on May 20, the annual oats are 200 grains / m 2 , the amount per mu is 30 kg; the seeds are coated with bacterial solution before sowing, and the coated bacterial solution is Pseudomonas cedrina UW3 and Pseudomonas putida UW4, 20,000 bacterial cells / grain; sampling (6) in early October for analysis and inspection, one growth season ( 6 months, cut the plants on the 60th day after sowing, and every 30 days thereafter, and leave a 12cm cut at the root, so that the organisms can continue to grow, and remove the cut plants) The restoration results are summarized as follows : 1, the new technology improves the copper absorption of ...

Embodiment 2

[0062] Remediation process of heavily cadmium-contaminated soil in Hunan Province, 2009-2011. Soil cadmium content is 30-40mg / kg. The area is 10 mu. Every year in the first ten days of March, the soil should be prepared, leveled, fertilized (N:P:k:10:10:5 kg / mu), repaired with biological agents (100 kg / mu) and rotary tillage; planted in the first ten days of April, Hybrid forage sorghum CFSH30: 50-80 grains / m 2 , 1.5 kg / mu; seeds are coated with bacterial solution before sowing, and the coated bacterial solution is Pseudomonas cedrina UW3 and Pseudomonas putida UW4, 20,000 bacterial cells / grain; during the repair process of 6 months, cut 5 times, 6 , 7, 8, 9 and mid-October, early November sampling (20) analysis and inspection, the restoration results for 3 consecutive years are summarized as follows: every year the new technology reduces the cadmium content in the soil by about 30%; the first year from an average of 35.1mg / kg to 26.2mg / kg, from 26.2mg / kg to 19.1mg / kg in th...

Embodiment 3

[0063] Example 3: The remediation process of moderately arsenic-contaminated soil in Yunnan Province from 2010 to 2012. The soil contains arsenic 140-350mg / kg; the area is 10 mu. In March every year, soil preparation, leveling, fertilization (N:P:k:10:10:5 kg / mu), application of restoration biological agent (100 kg / mu) and rotary tillage; sowing in early April every year, hybrid forage sorghum CFSH30 is 50-60 grains / m 2 , 1 kg / mu; seeds are coated with bacterial solution before sowing, and the coated bacterial solution is Pseudomonas cedrina UW3 and Pseudomonas putida UW4, 20,000 bacterial cells / grain; , 7, 8, 9, late October; early November sampling (10) analysis and inspection, the restoration results for 3 consecutive years are summarized as follows: the new technology reduces the cadmium content in the soil by about 30% every year; / kg dropped to 170.1mg / kg, dropped from 170.1mg / kg to 127.2mg / kg in the second year, dropped from 127.2mg / kg to 91.0mg / kg in the second year;...

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Abstract

The invention provides a soil remediation method and application thereof. The method comprises the steps: planting remediation plants in soil, and applying a biological remediation agent into the soil, wherein the remediation plants are one or a combination of annual cross-bred forage grass sorghum and annual cross-bred forage grass foxtail millet which can be cut for many times; the biological remediation agent at least comprises a fermentation raw bacteria liquid which contains plant growth promoting rhizobacteria (Pseudomonas cedrina UW3 and Pseudomnonas Putida UW4); the preparation of the fermentation raw bacteria liquid is described in the invention patent-ZL2008 1 0181327.8z; the soil is soil damaged by heavy metals which include As, Cd, Co, Cr, Cu, Hg, Ni, Pb, Zn, radioactive U235 and the like.

Description

technical field [0001] The invention relates to the field of soil restoration, in particular to a soil restoration method and its application. Background technique [0002] With the development of modern industry, soil pollution has gradually become one of the global environmental problems. Especially mining, metal smelting, oil extraction and chemical industry production, the most serious soil pollution. The content of heavy metals, hydrocarbons and various toxic salts in the soil is too high, and it is difficult to eliminate them by natural decomposition for a long time. [0003] Soil pollution not only has a direct toxic effect on the human body, but also leads to a reduction in food production, and even further endangers people's health through the high content of heavy metals and salts in food. [0004] According to a sample survey conducted by the relevant departments on the rice sold in the Guangzhou city market, among the 29 rice sales varieties (from different ori...

Claims

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Application Information

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IPC IPC(8): B09C1/10B09C1/00
Inventor 黄晓东
Owner 黄晓东
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