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Reducing aluminum-containing composite heavy metal passivation agent and use method thereof

A technology of heavy metal passivator and aluminum powder, which is applied in the field of agricultural resources and environment

Active Publication Date: 2016-10-12
INST OF SOIL & FERTILIZER FUJIAN ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few research reports on the use of reduced aluminum to treat environmental pollutants, and there are only a few reports on the use

Method used

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  • Reducing aluminum-containing composite heavy metal passivation agent and use method thereof
  • Reducing aluminum-containing composite heavy metal passivation agent and use method thereof
  • Reducing aluminum-containing composite heavy metal passivation agent and use method thereof

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Embodiment Construction

[0014] In order to make the content of the present invention easier to understand, the technical solutions of the present invention will be further described below in conjunction with specific embodiments, but the present invention is not limited thereto.

[0015] Using the greenhouse soil cultivation pot test method, with Shanghai Qing as the test vegetable crop, research on the basis of conventional application of chemical fertilizers, adding the compound heavy metal passivator of the present invention, the effect on vegetable yield, vegetable heavy metal (Cd, Pb) content and The impact of the content of available heavy metals (Cd, Pb) in the soil after the vegetables are harvested is to verify the passivation repair effect of the composite heavy metal passivator of the present invention on the heavy metal pollution of the vegetable-soil system.

[0016] The test pots are plastic flower pots with the following specifications: the upper inner diameter is 32 cm, the lower inner...

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Abstract

The invention discloses a reducing aluminum-containing composite heavy metal passivation agent and a use method thereof; the composite heavy metal passivation agent is formed by uniformly mixing sulfur, a reducing aluminum powder and calcium hydroxide according to the weight ratio of 2:15:100, and then during land finishing before sowing or seedling transplant, in a vegetable field polluted by heavy metals, the composite heavy metal passivation agent and a base fertilizer are together applied uniformly into soil of a plough layer, and the application amount is 117 kg/mu. Based on conventional application of a chemical fertilizer, the composite heavy metal passivation agent is additionally applied, the content of farmland soil available heavy metals can be significantly reduced, the absorption amount of vegetable crops on the soil heavy metals is reduced, the heavy metal pollution degree of vegetable products is alleviated, and human body heavy metal toxicity risks caused by eating of vegetables is reduced.

Description

technical field [0001] The invention belongs to the technical field of agricultural resources and environment, and in particular relates to a composite heavy metal passivator containing reduced aluminum and a use method thereof. Background technique [0002] With the rapid advancement of China's industrialization and urbanization process, soil heavy metal pollution has become increasingly prominent, and the "three wastes" of chemical, mining, and smelting industries, urban traffic, atmospheric deposition, livestock and poultry manure, urban sludge, pesticides and fertilizers have become major sources of pollution. According to the "National Soil Pollution Survey Bulletin" (April 17, 2014), the over-standard rate of cultivated land soil points in China was 19.4%, of which light and moderately polluted points accounted for 94.3% of the total over-standard points; Inorganic pollutants (inorganic pollutants refer to 8 heavy metals including cadmium, mercury, arsenic, copper, lea...

Claims

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Application Information

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IPC IPC(8): C09K17/06B09C1/08C09K101/00C09K109/00
CPCB09C1/08B09C2101/00C09K17/06C09K2101/00C09K2109/00
Inventor 黄东风王利民张青罗涛李卫华邱孝煊
Owner INST OF SOIL & FERTILIZER FUJIAN ACADEMY OF AGRI SCI
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