Method for restoring petroleum-polluted wetland by using carex phacota Spr. and microorganisms

A joint restoration, oil-based technology, applied in the field of plant-microbial joint restoration, can solve weak problems and achieve the effect of small engineering volume, low investment and low technical requirements

Inactive Publication Date: 2011-09-07
SHANGHAI UNIV
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  • Application Information

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Problems solved by technology

In recent years, there have been many researches on the degradation of petroleum pollutants in soil at home and

Method used

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  • Method for restoring petroleum-polluted wetland by using carex phacota Spr. and microorganisms
  • Method for restoring petroleum-polluted wetland by using carex phacota Spr. and microorganisms
  • Method for restoring petroleum-polluted wetland by using carex phacota Spr. and microorganisms

Examples

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Embodiment 1

[0017] Example 1: Outdoor test of degreasing of triangular grass and native oleophilic flora

[0018] This experiment was carried out in August 2009. The experimental location is the open-air balcony on the fifth floor of the Environmental and Chemical Laboratory Building of Shanghai University. The institute is located in Baoshan District, Shanghai, which belongs to the humid zone and semi-humid continental monsoon climate, with an annual precipitation of about 500-600. The original oil-contaminated soil used in the test was taken from the Huangpu River-Yangtze River estuary wetland soil, and the three oleophilic strains used in this experiment were screened out from it. The clean soil was taken from the flower bed in the East District of Shanghai University. After passing through a 2mm sieve, it was evenly mixed with a sand-to-soil ratio of 2:3, and prepared into soil with different diesel concentration gradients. Prepared into 5 concentration gradients, namely: 1000mg / kg, ...

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Abstract

The invention relates to a method for restoring a petroleum-polluted wetland by using carex phacota Spr. and microorganisms. The method comprises the following specific steps of: planting carex phacota Spr. in soil of the petroleum-polluted wetland; adding a bacterial suspension of an oil-degraded microorganism into the soil after adaptation; and removing petroleum oil stains from the soil under the coordination of the oil-degraded microorganism and a plant root system, wherein the density of the planted carex phacota Spr. is 300-800 plants/m<2>, 10 milliliters of bacterial suspension are added into every kilogram of soil, and the volume weight ratio of the added bacterial suspension to the soil is generally (1-5):100 ml/g. By adopting a degrading bacteria consortium obtained by screening, the degradation of a carex phacota Spr. rooting zone on oil pollutants can be enhanced. By adopting the method, a large number of petroleum organic matters can be removed from soil, so that the effect of quickly and completely removing a large number of petroleum organic matters from the soil is achieved. The method has the advantages of small environmental destruction, no damage to the physicochemical property of soil, low cost and the like.

Description

technical field [0001] The invention relates to a plant-microorganism combined restoration method for wetlands polluted by petroleum, specifically a method for utilizing the perennial Cyperaceae trigonum ( Carex phacota Spr .) A method for remediating petroleum-contaminated wetlands by combining oleophilic flora. Background technique [0002] In the process of large-scale oil extraction, smelting, transportation, use and processing, accidents such as pollution, omission, blowout, and oil pipeline leakage occur frequently, resulting in serious soil pollution. The area of ​​soil and water bodies polluted by oil in our country is also expanding, and the degree of pollution is becoming more and more serious. The risk of sudden pollution leakage accidents from ships is relatively high, and oil spills occur from time to time, causing the wetland ecosystems near the coast and some lakes to be polluted to a certain extent. Petroleum pollutants spilled into water will gradually und...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
CPCY02A40/22
Inventor 刘晓艳王珍珍张新颖王君刘珊珊刘发辉陈丽莎田翔朱树超
Owner SHANGHAI UNIV
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