Method of combinedly-reinforced repairing pyrene-and-lead combinedly-polluted soil with scripus triqueter

A technology of compound pollution and lead pollution, applied in the restoration of polluted soil, etc., can solve the problems of slow growth of hyperaccumulative plants, small biomass, and restrictions on the practical application of phytoremediation technology, so as to improve bioavailability and improve The effect of absorbing and reducing the possibility of secondary pollution

Inactive Publication Date: 2015-11-11
SHANGHAI UNIV
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Problems solved by technology

[0003] Most of the hyperaccumulative plants found in phytoremediation grow slowly, have small biomass, and most of them can only absorb one kind of pollutant. However, the current soil pollution is often composed of several kinds of pollutants. The practical application of phytoremediation technology in compound polluted soil

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  • Method of combinedly-reinforced repairing pyrene-and-lead combinedly-polluted soil with scripus triqueter
  • Method of combinedly-reinforced repairing pyrene-and-lead combinedly-polluted soil with scripus triqueter
  • Method of combinedly-reinforced repairing pyrene-and-lead combinedly-polluted soil with scripus triqueter

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Embodiment approach

[0016] The experiment lasted for 60 days in 2014 (2014.8.2~2014.10.2), and the experiment site was selected in the laboratory building of the School of Environmental Chemistry, Shanghai University. The scallops used in the experiment were collected from the Binjiang Wetland of Wusongkou, Shanghai, and 1,000 syringa seedlings were planted per square meter after one week of slowing down. The plants were pre-cultivated in the test soil for about 10 days (keep the soil moisture content in the pot at the maximum in the field) 75% of water holding capacity). Nine treatment groups were set up in the test, and each treatment group had three parallels, that is, nitrilotriacetic acid and alkyl glycoside solutions with different concentration ratios were added to the potted plants after pre-cultivation, so that their contents in the soil were: 0g / kg, 1g / kg, 2g / kg and the above concentrations are listed in Table 1.

[0017] The processing of table 1 pot experiment

[0018]

[0019] ...

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Abstract

The invention relates to a method of combinedly-reinforced repairing pyrene-and-lead combinedly-polluted soil with scripus triqueter. The method includes following steps: (1) transplanting seedlings of the scripus triqueter to soil polluted by pyrene and / or lead, wherein the planting density of the seedlings of the scripus triqueter is 600-1000 / m<2>; (2) after seedling recovering for 10 days, irrigating a mixed solution containing nitrilotriacetic acid and alkyl glycoside to soil to maintain the total mass of the nitrilotriacetic acid and alkyl glycoside in soil is 1.0-2.5 g per cubic meter soil; (3) when the scripus triqueter is matured, moving the scripus triqueter away to repair the soil polluted by pyrene and / or lead. The reinforced plant repairing technology, compared with other repairing methods, is environment-friendly, is low in cost, is high in repairing efficiency and is easy to carry out.

Description

technical field [0001] The invention relates to a method for jointly strengthening syringa to remediate pyrene and lead compound polluted soil. Background technique [0002] With the development of industrialization and urbanization in our country, the discharge of heavy metals and organic pollutants in the environment will remain at a relatively high level for a long time, and the soil pollution in our country will also tend to be serious and complicated. Soil pollutants are divided into organic pollutants and inorganic pollutants. Organic pollutants mainly include polycyclic aromatic hydrocarbons, organic pesticides, phenolic compounds, and petroleum, while inorganic pollutants mainly include heavy metals, radionuclides, acids, alkalis, and salts. Polycyclic aromatic hydrocarbons (Polycyclic Aromatic Hydrocarbons, PAHs) are a class of organic pollutants that widely exist in the environment. PAHs refer to organic compounds with two or more fused benzene rings, are difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 刘晓艳陈婷茹顾玲锋陈枭陶恺赟张新颖侯芸芸
Owner SHANGHAI UNIV
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