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Phytoremediation method for oil polluted wetland

A phytoremediation and oil pollution technology, which is applied in the field of phytoremediation of oil-polluted wetlands, can solve the problems of secondary pollution, high cost, biological pollution of soil and groundwater, and achieves reduction of possibility, less investment, and less professional technical requirements. Effect

Inactive Publication Date: 2011-01-19
SHANGHAI UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Existing remediation methods include physical remediation, chemical remediation, and biological remediation. Traditional physical and chemical remediation methods are costly and prone to secondary pollution. Microbial remediation methods may lead to biological contamination of soil and groundwater by microorganisms such as bacteria.

Method used

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  • Phytoremediation method for oil polluted wetland
  • Phytoremediation method for oil polluted wetland
  • Phytoremediation method for oil polluted wetland

Examples

Experimental program
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Effect test

Embodiment

[0019] Example: Open-air pot test of three-edge grass repairing diesel-contaminated soil

[0020] The test lasted for 50 days in 2009 (2009.7.29~2009.9.20), and the test site was selected in the laboratory building of the School of Environmental Chemistry, Shanghai University. The three-edge grass used in the experiment was collected from Wusongkou, Shanghai, the clean soil was collected from the campus of Shanghai University, and the soil was polluted by self-made diesel oil, which was purchased from a gas station on Nanchen Road. After the soil is naturally air-dried, pass through a 40-mesh sieve and then prepare the required concentration in proportion, and use it after a week of equilibration. There are 5 treatments in total in the test, the concentrations of diesel in diesel-contaminated soil are: 1000mg / kg, 5000mg / kg, 10000mg / kg, 15000mg / kg, 20000mg / kg, and each treatment has three parallel samples and a set of blanks.

[0021] The three-edged grass plant samples were s...

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Abstract

The invention relates to a phytoremediation method for oil polluted wetland, which comprises the following steps of: planting seedlings of sedge herb or sowing seeds of sedge herb in the oil polluted wetland, wherein the planting density is 800-1,200 plants / m<2>; when the sedge herb grows to the seed stage, harvesting the sedge herb; and repeatedly harvesting until the oil content in the soil meets the environmental safety standard.

Description

technical field [0001] The invention relates to a phytoremediation method for oil polluted wetlands. Background technique [0002] With my country's opening up to the outside world and the rapid development of the marine economy, the scale of offshore oil exploration and development continues to increase, and the transportation of offshore oil and fuel oil is increasingly busy. In addition, my country's future demand for oil continues to increase and the oil transportation market continues to grow. It may be a frequent and hard-hit area of ​​oil spill accidents in the future. According to incomplete statistics, from 1976 to 2006, an average of one oil spill accident occurred in my country's coastal areas every four days, among which there were more than 60 oil spill accidents with an oil spill volume of more than 50 tons. Every year, a large amount of oil pollution enters the marine ecological environment, and the fragile wetland ecology on the shore is extremely vulnerable,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 王君刘晓艳张新颖王珍珍苏鹏程钟成林曹正楠田翔黄晓红
Owner SHANGHAI UNIV
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