Preparation process of metal peroxide and application in ecological restoration

A technology of metal peroxide and ecological restoration, applied in the fields of application, chemical instruments and methods, restoration of polluted soil, etc., can solve the problems of accelerating metal peroxide reaction, large specific surface area of ​​metal peroxide, and metal peroxide Loss and other issues

Inactive Publication Date: 2013-04-03
郑　彬 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, there are many problems in the application of metal peroxides in farmland, soil or groundwater remediation: before being injected into the soil aquifer, metal peroxides will react with water to cause partial loss; at the same time, due to the powdery metal peroxides The large specific surface area will accelerate the reaction between metal peroxides and water. As a result, the dissolved oxygen content in groundwater increases rapidly, often far exceeding the solubility of oxygen in groundwater, causing excess oxygen to escape in the form of gas Into the unsaturated soil area, resulting in the loss of metal peroxides that cannot be fully utilized, and metal peroxides will soon lose their role as an oxygen source in the process of groundwater bioremediation
At the same time, peroxide will cause the pH of the water body to increase significantly during the oxygen release process, resulting in the inhibition of microbial activity (the suitable pH range for microbial growth is 6.5-8.5), thus affecting the effective removal of pollutants

Method used

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Embodiment Construction

[0013] This specific implementation adopts the following technical scheme: it adds 0.01%-2.5% (w / w) inorganic phosphate component in the production process of metal peroxide or after product molding to form phosphorus-containing metal oxide powder.

[0014] The inorganic phosphate component comprises one or more mixtures of potassium dihydrogen phosphate, potassium hydrogen phosphate, ammonium phosphate and aluminum-magnesium phosphate fertilizers.

[0015] Phosphorus-containing metal oxide powder is product type I. The application in ecological restoration has the following points:

[0016] 1. On the basis of product type I, it can selectively add nutrients such as organic matter, available phosphorus, available potassium, and total nitrogen according to the fertility requirements of different soils (dry land, paddy field, vegetable field, garden field, and pasture land). Ratio, and then directly mixed with contaminated soil (farmland, industrial contaminated land, etc.) for ...

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Abstract

The invention discloses a preparation process of metal peroxide and application in ecological restoration, and relates to the technical field of environment protection. 0.01-2.5% (w / w) of inorganic phosphate ingredients are added in the production process of the metal peroxide or after the metal peroxide is prepared so as to form phosphorus-containing metallic oxide powder. On the basis of the phosphorus-containing metallic oxide powder, various auxiliary materials (surfactant, persulfate, bentonite, agricultural fertilizer and the like) can be added or granulized and formed, and farmlands, soil and underground water containing various organic pollutant compounds are subjected to in-situ or ex-situ restoration, so that harmless management is realized.

Description

Technical field: [0001] The invention relates to the technical field of environmental protection, in particular to a preparation process of a metal peroxide and its application in ecological restoration. Background technique: [0002] At present, there are many problems in the application of metal peroxides in farmland, soil or groundwater remediation: before being injected into the soil aquifer, metal peroxides will react with water to cause partial loss; at the same time, due to the powdery metal peroxides The large specific surface area will accelerate the reaction between metal peroxides and water. As a result, the dissolved oxygen content in groundwater increases rapidly, often far exceeding the solubility of oxygen in groundwater, causing excess oxygen to escape in the form of gas Into the unsaturated area of ​​the soil, the metal peroxides cannot be fully utilized and lost, and the metal peroxides will soon lose their role as an oxygen source in the process of groundw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/02B09C1/08C02F1/00C02F3/00C02F103/06
Inventor 郑彬罗春晖
Owner 郑　彬
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