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Method for biological remediation of soil with saline-alkali harms and application

A bioremediation and saline-alkali technology, applied in the field of soil remediation, can solve the problems of difficult natural decomposition, cleanup, high content of toxic salts, and achieve the effect of wide applicability

Inactive Publication Date: 2015-07-01
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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  • Method for biological remediation of soil with saline-alkali harms and application
  • Method for biological remediation of soil with saline-alkali harms and application
  • Method for biological remediation of soil with saline-alkali harms and application

Examples

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Effect test

Embodiment 1

[0077] refer to figure 1 , The remediation process of heavily saline-alkali-contaminated soil in the northeast region of site A (Baicheng, Jilin Province). The soil contains about 0.9% (10-15g / kg) (ECe: 14-16dS / m) (mainly NaCO 4 , high Na ion content) white paddle soil saline-alkali land; area of ​​20 hectares in April 2008, land preparation, leveling, fertilization (N:P:k:10:10:5 kg / mu), and restoration of biological agents (Chinese patent application 200810181327.8 implementation Example 1 product) (100 kg / mu) and rotary tillage; sowing on May 20, annual forage grass type oats is 200 grains / m 2 , the amount per mu is 30 kilograms; 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, which contains methylcellulose with a mass percentage concentration of 0.5%; During the repair process of 5 months, the stubble was harvested twice, leaving 12cm of stub...

Embodiment 2

[0080] Site B The remediation process of moderately saline-alkali-contaminated soil in North China (Cangzhou, Hebei Province). Beach saline-alkali land with soil content of 0.4-0.5% (5-6g / kg soil) (ECe: 6-8dS / m) (mainly NaCl, high content of Cl ions); the area is 10 hectares. In April 2008, the soil was prepared, leveled and fertilized (N:P:k:10:10:5 kg / mu), apply restoration biological agent (product of Chinese patent application 200810181327.8 embodiment 1) (100 kg / mu) and rotary tillage; sow on May 2, hybrid forage grass Sorghum CFSH30 is 70 / 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, which contains methylcellulose with a mass percentage concentration of 0.5%; During the 5-month restoration process, the stubble was harvested 3 times, leaving 12cm of stubble at the root each time, on July 30, August 30, and September 30; samplin...

Embodiment 3

[0082] Site C The remediation process of slightly saline-alkali polluted soil in northern Shaanxi (Shenmu County). The local annual rainfall is less than 300mm, the soil contains 0.2-0.4% (3-5g / kg soil) (ECe: 4-6dS / m), mainly NaCl, Cl ion content is high, and the groundwater contains saline alkali; the area is 10 hectares in 2008 In April 2008, soil preparation, leveling, fertilization (N:P:k:10:10:5 kg / mu), repair biological agent (Chinese patent application 200810181327.8 embodiment 1 product) (100 kg / mu) and rotary tillage; 5 Sowing on 10th, 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, which contains methylcellulose with a mass percentage concentration of 0.5%; During the 5-month restoration process, the stubble was harvested 3 times, leaving 12cm of stubble at the root each time, on Ju...

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Abstract

The invention provides a method for biological remediation of soil with saline-alkali harms and an application. The method comprises the following steps of: planting remediation plants in the soil and applying a remediation biological preparation on the soil, wherein the remediation plants are one or combination of more in annual hybrid forage sorghum, barley and oat; the remediation biological preparation at least comprises bacterium solution containing plant-growth promoting bacteria Pseudomonas cedrina UW3 and Pseudomonas putida UW4; the preferred soil is the soil with the saline-alkali harms; the more-preferred saline alkali contains Na<+>, Cl<->, CO4<2-> and SO4<2->; the preferred oat is forage-type oat. The method provided by the invention has the advantages that the time of soil remediation can be greatly shortened, and generally, the soil can be remediated to the level before pollution in a controllable time ranging from 3 years to 5 years at a region with serious pollution.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to a method and application of biological remediation of saline-alkali damaged soil. 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 the investigation of Beijing, Tianjin, Shanghai and other seven cities by relevant departments, among the 123 kinds of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10
Inventor 黄晓东
Owner 黄晓东
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