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Slow-release fertilizer with effect of soil remediation and remediation method of soil polluted by polycyclic aromatic hydrocarbons

A slow-release fertilizer and soil remediation technology, applied in the field of soil remediation, can solve the problems of shortening the growth cycle of plants, not proposing long-term effectiveness, low remediation efficiency, etc., to promote sustained and rapid growth of plants, good biological activity and degradation performance, saving energy cost effect

Active Publication Date: 2010-12-29
SHENZHEN ECOMANN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current patents do not propose how to achieve long-term effectiveness and shorten the plant growth cycle.
As we all know, microorganisms and plants will be limited in the reproduction of microorganisms and plant growth due to the deterioration of the soil, the lack or imbalance of nutrients in the soil polluted by polycyclic aromatic hydrocarbons, and the restoration efficiency is low. Fertilizers are lost under the action of rainwater or surface water, requiring multiple fertilization and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 24 parts of poly 3-hydroxybutyrate, 25 parts of diatomaceous earth, 2.5 parts of ammonium phosphate, 5 parts of urea, 25 parts of humic acid, 5 parts of bentonite, 10 parts of shell powder, 0.2 parts of magnesium sulfate, 0.3 parts of trehalose lipid 1, 3 parts of starch paste were mixed to make uniform particles with a diameter of 1.2mm, and spread evenly in the suburban soil polluted by phenanthrene and pyrene at 200Kg / mu. After plowing, ryegrass and butter grass were planted, and the soil was tested 45 days after planting. The contents of phenanthrene and pyrene were reduced from the original 180mg / Kg and 102mg / Kg to 126mg / Kg and 75mg / Kg, respectively, 54mg / Kg and 38mg / Kg after 90 days, and 5mg / Kg and 2.6mg after 180 days / Kg.

Embodiment 2

[0050] 15 parts of polyhydroxybutyrate valeric acid copolymer with comonomer 3-hydroxyvaleric acid content of 10%, 30 parts of diatomaceous earth, 4 parts of ammonium phosphate, 8 parts of ammonium chloride, 1.5 parts of potassium chloride, humic Mix 26 parts of acid, 15 parts of brucite, 0.2 part of rhamnolipid, and 0.3 part of sophorolipid to prepare uniform particles with a diameter of 2.5 mm, and spread them evenly in the oil-polluted soil at 1 ton / mu, and plow After planting alfalfa and clover, the content of phenanthrene and benzopyrene in the soil was tested 45 days after planting, and the content of phenanthrene and benzopyrene in the soil decreased from 450mg / Kg and 392mg / Kg to 226mg / Kg and 241mg / Kg respectively; after 90 days, it decreased to 94mg / Kg and 108mg / Kg; decreased to 83mg / Kg and 92mg / Kg after 180 days. After 90 days, due to the degradation rate of polyhydroxybutyrate valeric acid copolymer from fast to slow, the decomposition and repair of soil polycyclic ...

Embodiment 3

[0052] 20 parts of comonomer 4-hydroxybutyric acid content is 15% poly 3-hydroxybutyrate-4-hydroxybutyrate copolymer, 30 parts of diatomaceous earth, 5 parts of calcium magnesium phosphate fertilizer, 8 parts of methylene urea 15 parts of humic acid, 17 parts of fly ash, 0.25 parts of surfactin (surfactin), 0.25 parts of lipopeptide, 0.1 part of potassium permanganate, and 4.4 parts of starch are mixed to make uniform particles with a diameter of 1.8mm. According to 0.5Kg / m 2 Evenly spread in the hillside soil on both sides of the road polluted by pyrene, phenanthrene, and fluoranthene, and planted step grass, alfalfa, and clover. After planting for 45 days, the content of polycyclic aromatic hydrocarbons in the soil was detected. / Kg, 188mg / Kg, 165mg / Kg decreased to 135mg / Kg, 114mg / Kg, 102mg / Kg, and decreased to 83mg / Kg, 57mg / Kg, 35mg / Kg after 90 days; after 90 days, the fertility of slow-release fertilizer remained at 15 %, the remediation rate of soil polycyclic aromatic h...

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Abstract

The invention discloses slow-release fertilizer with the effect of soil remediation, which is prepared by polyhydroxyalkanoates which can be completely biodegraded, organic and inorganic nutrients and other substances, by slow-releasing the organic and inorganic nutrients, microorganism propagation and sustained and rapid growth of plants can be promoted, the bioactivity and water solubility of polycyclic aromatic hydrocarbons are quickened, and simultaneously, the defects of fertilizer loss and repeated fertilization can be avoided, thereby saving the cost and enhancing the soil remediation efficiency. The invention also discloses a soil pollution remediation method by utilizing the slow-release fertilizer, plants with the remediation effect are planted in the soil with the slow-release fertilizer, and efficient, environment-friendly and sustained remediation of the soil polluted by the polycyclic aromatic hydrocarbons (PAHs) can be realized by utilizing the microorganism-plant remediation technology.

Description

【Technical field】 [0001] The invention relates to a slow-release fertilizer with soil repair function and a soil repair method using the slow-release fertilizer. 【Background technique】 [0002] With the acceleration of modern urbanization and the large-scale development and use of petroleum, coal and other energy sources, the pollution of polycyclic aromatic hydrocarbons (PAHs) is becoming more and more serious. Polycyclic aromatic hydrocarbons are compounds connected by 2 or more benzene rings in the form of condensed rings and non-fused rings. There are more than 500 types, of which nearly 200 PAHs are not only highly toxic-carcinogenic, mutagenic, and mutagenic , and promote carcinogenesis. In particular, polycyclic aromatic hydrocarbons such as acenaphthene, fluorene, phenanthrene, fluoranthene, and pyrene have been proven to be highly carcinogenic. In addition to some natural sources, polycyclic aromatic hydrocarbons in soil mainly come from incomplete combustion of f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/00B09C1/10C05G3/80
Inventor 钟路华蓝小平
Owner SHENZHEN ECOMANN BIOTECH
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