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Soil biological repair method

A remediation method and soil biological technology, applied in the field of soil bioremediation, can solve the problems of high soil remediation cost, long cycle, heavy workload, etc., and achieve the effect of high degree of automatic remediation

Active Publication Date: 2015-09-16
山东康诚石油化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high cost, long period and heavy workload in oil-contaminated soil remediation in the petrochemical industry, we propose a soil bioremediation method, which can achieve low cost, short remediation period, reduce labor costs, and simple process flow Purpose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A soil bioremediation method, the steps are as follows:

[0042] (1) On-site investigation and analysis of oil-polluted soil, including soil pollution degree, pollutants, pollution range, pollution boundary, etc.

[0043] (2) Bacteria culture: According to the analysis results of step (1), the soil purification flora is determined. The flora adopts a liquid fermentation culture method. After the cultivation is completed, it is dried and dehydrated, and the oily substances in the strains are extracted, and the strains are treated with a biofilm. Film-coated to form capsule-type bacteria powder.

[0044] (3) Nutrient solution preparation: determine the use mode of the nutrient solution and calculate the dosage according to the analysis results of step (1), the nutrient solution is composed of the following raw materials in mass percentage:

[0045] Oxygen release agent ORC: 2%;

[0046] 30% hydrogen peroxide: 0.2%;

[0047] Micro-nano bubble particles: 0.5%;

[0048] ...

Embodiment 2

[0062] A kind of soil bioremediation method, step is basically the same as embodiment 1, and nutrient solution is made up of the raw material of following mass percentage:

[0063] Oxygen release agent ORC: 5%;

[0064] 30% hydrogen peroxide: 0.5%;

[0065] Micro-nano bubble particles: 1%;

[0066] Ammonium sulfate: 10%;

[0067] Potassium dihydrogen phosphate: 10%;

[0068] Yeast extract: 5%;

[0069] Compound amino acid: 10%;

[0070] Trace element complexes: 10%;

[0071] Water: 48.5%.

Embodiment 3

[0073] A kind of soil bioremediation method, step is basically the same as embodiment 1, and nutrient solution is made up of the raw material of following mass percentage:

[0074] Oxygen release agent ORC: 1%;

[0075] 30% hydrogen peroxide: 0.1%;

[0076] Micro-nano bubble particles: 0.1%;

[0077] Ammonium sulfate: 5%;

[0078] Potassium dihydrogen phosphate: 5%;

[0079] Yeast extract: 1%;

[0080] Compound amino acid: 5%;

[0081] Trace element complexes: 5%;

[0082] Water: 77.8%.

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Abstract

The present invention discloses a soil biological repair method, which comprises (1) investigation analysis, (2) flora culture, (3) nutrient solution preparation, (4) biological surfactant preparation, (5) flora pouring, (6) full load repair, and (7) purified soil repair evaluation. According to the present invention, the capsule type bacterial powder is used, can complete the same biological repair work within 2-3 months compared with the 1 year period of the traditional process, and can be directly used for repairing high concentration heavy oil contaminated soil, the oil film and the oil odor can be rapidly inhibited, the automatic repair degree is high, and frequent soil plowing is not required.

Description

technical field [0001] The invention relates to the field of petrochemical pollution control, in particular to a soil bioremediation method. Background technique [0002] In the process of oil exploration, extraction, storage, transportation, processing and use, various unpredictable factors will cause large-scale soil oil pollution, such as blowout accidents in oil field development, accidental leakage of oil pipelines and oil storage tanks, etc. After petroleum pollutants enter the soil, they will destroy the soil structure and affect the permeability of the soil. Oil stains adhere to plant roots, hindering the respiration and absorption of plant roots, causing root rot and crop yield reduction. Reactive groups rich in petroleum can combine with inorganic nitrogen and phosphorus to limit nitrification and dephosphorylation, thereby reducing the content of available nitrogen and phosphorus in the soil and affecting the nutrient absorption of crops. Benzene series and poly...

Claims

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Application Information

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IPC IPC(8): B09C1/10
Inventor 孟宪武张仁琨石忠涛田志立杨敬杰宋杨
Owner 山东康诚石油化工科技股份有限公司
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