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A method for synergistic remediation of petroleum-heavy metal contaminated soil by animal and plant-biochar

A technology for synergistic restoration and polluted soil, applied in the field of contaminated soil treatment, can solve the problems of affecting plant transpiration and respiration, poor penetration ability, blocking plant stomata, etc., to achieve the goal of improving biodiversity, low cost, and eliminating pollutants Effect

Active Publication Date: 2018-06-15
福建沃土环保集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-molecular hydrocarbons may have poor penetrating ability due to large molecules, but high-molecular hydrocarbons are easy to form a film on the surface of plants, blocking plant stomata, and affecting plant transpiration and respiration

Method used

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  • A method for synergistic remediation of petroleum-heavy metal contaminated soil by animal and plant-biochar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Apply biochar-based fertilizer to petroleum-heavy metal-contaminated soil, mix well, and age for 60 days;

[0037] 2) After the aging of the biochar-based fertilizer in step 1), put the earthworms into the culture, and the amount of earthworms put into the soil is 0.3kg / m 2 , and then select H through 20% 2 o 2 Disinfection treatment and then washing and soaking in distilled water for 12 hours. The annual castor bean seedlings with plump and sinking seeds grow into healthy seedlings of 30 cm in length and buried in the surface of the soil at a depth of 10 cm at an inclination of 30 degrees in the vertical direction. The plant spacing is 20 cm and the row spacing is 25 cm. In late March, the annual Tongbi No. 5 castor was continuously planted in the experimental field for one cycle, and watered every 3 days to keep the soil moisture at 45% to ensure the normal growth of castor and earthworms. During the planting period , every 30 days, sieve the soil, separate the a...

Embodiment 2

[0044] 1) Apply biochar-based fertilizer to petroleum-heavy metal-contaminated soil, mix well, and age for 60 days;

[0045] 2) After the aging of the biochar-based fertilizer in step 1), put the earthworms into the culture, and the amount of earthworms put into the soil is 0.3kg / m 2 , and then select H through 20% 2 o 2 Disinfection treatment, then washing and soaking in distilled water for 12 hours, the full-grained and sinking annual castor oil No. 5 castor seeds grow into healthy seedlings of 30 cm and are buried in the soil surface at a depth of 10 cm along the vertical direction at an inclination of 30 degrees. The plant spacing is 20 cm, and the row spacing is 25 cm. In the last ten days of March, the annual Castor No. 5 oil castor was continuously planted in the experimental field for one cycle, and watered every 5 days to keep the water content of the soil at 45% to ensure the normal growth of No. 5 castor oil and earthworms. During the planting period, the soil is ...

Embodiment 3

[0052] 1) Apply biochar-based fertilizer to petroleum-heavy metal-contaminated soil, mix well, and age for 60 days;

[0053] 2) After the aging of the biochar-based fertilizer in step 1), put the earthworms into the culture, and the amount of earthworms put into the soil is 0.3kg / m 2 , and then select H through 20% 2 o 2 Disinfection treatment, then washing and soaking in distilled water for 12 hours, the full-grained and sinking annual castor oil No. 4 castor seeds grow into healthy seedlings of 30 cm and are buried in the soil surface at a depth of 15 cm along the vertical direction at an inclination of 30 degrees. The plant spacing is 25 cm, and the row spacing is 25 cm. In the last ten days of March, the annual Castor No. 4 oil castor was continuously planted in the experimental field for one cycle, and watered every 5 days to keep the soil moisture at 50% to ensure the normal growth of No. 4 castor oil and earthworms. During the planting period, the soil is screened eve...

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Abstract

The invention provides a method for synergistically repairing petroleum-heavy metal-contaminated soil with animal-plant-biochar, by applying biochar-based fertilizers to petroleum-heavy metal-contaminated soil, mixing evenly, and aging; after aging, put Earthworm breeding, then planting castor, castor is removed after the castor fruit is harvested; after the castor is removed as a whole, biochar-based fertilizer is applied to the soil polluted by petroleum-heavy metals again, mixed evenly, and aged; aged After thawing, put in earthworm culture, and then plant willows; repeat the above steps in a cycle until the content of heavy metals in the soil reaches the safety standard. The invention has good soil treatment effect, combined with biological charcoal, animal and plant strengthened composite restoration, has extremely obvious effect, and does not produce secondary pollution to soil.

Description

technical field [0001] The invention relates to the field of contaminated soil treatment, in particular to a method for synergistic restoration of petroleum-heavy metal contaminated soil by animals, plants and biochar. Background technique [0002] In the process of oil extraction, storage, transportation and production of petrochemical products, there are often spills, which cause a large amount of oil to enter the soil and cause environmental pollution. In view of the increasingly serious pollution situation, all countries in the world attach great importance to the research of petroleum pollutants in soil. These studies play a very important role in restoring the ecological environment and protecting the agricultural environment. [0003] Oil pollution to the soil is mostly concentrated in the surface layer of about 20cm. Petroleum substances entering the soil can cause changes in soil physical and chemical properties, such as blocking soil pores, changing the compositi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00
Inventor 柳建锋
Owner 福建沃土环保集团有限公司
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