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Seawater composite liquid fertilizer, preparation method and application thereof

A technology of compound liquid and sea water, applied in application, nitrogen fertilizer, ammonium salt fertilizer and other directions, can solve the problems of lack of medium and trace mineral elements, solid fertilizer is not easy to dissolve, and fertilizer crystallization temperature is high, so as to improve the lack of mineral elements and reduce the price. , the effect of low acidity

Inactive Publication Date: 2019-10-01
天津海源汇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid fertilizer has many advantages such as low production cost, high nutrient content, easy compounding, direct absorption by crops, convenient formula fertilization (balanced fertilization) and mechanized fertilization. targeted
[0003] At present, most of the liquid fertilizers in my country use solid fertilizers as raw materials, which are prepared by dissolving under a certain stirring action. The crystallization temperature of fertilizers is high, and the acidity is high, which is easy to cause corrosion to drip irrigation equipment.
The liquid fertilizer products produced by this method have low nutrient content, lack of medium and trace mineral elements, and there are problems such as solid fertilizers are not easy to dissolve, which has become a bottleneck restricting the development of liquid fertilizers.

Method used

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  • Seawater composite liquid fertilizer, preparation method and application thereof
  • Seawater composite liquid fertilizer, preparation method and application thereof
  • Seawater composite liquid fertilizer, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of boron-containing seawater compound liquid fertilizer:

[0029] (1) Using the second-class seawater in the Bohai Bay sea area as raw material, the organic organisms and impurities in the seawater are filtered through a microfiltration membrane with a pore size of 0.5 μm. The operating pressure of the microfiltration membrane is 0.01MPa;

[0030] (2) The seawater discharged from the microfiltration system enters the first-level nanofiltration system, and is circulated and concentrated through the first-level nanofiltration system. The pore size of the nanofiltration membrane is 1nm, and the operating pressure is 2MPa to remove most of the monovalent ions (Na + , Cl - 、K + 、Br - , I - ), the remaining concentrated solution is mixed with tap water;

[0031] (3) The concentrated solution is mixed with tap water and then concentrated by a secondary nanofiltration system until the total amount of dissolved solids in the concentrated solution reaches...

Embodiment 2

[0037] A preparation method of iron-containing seawater compound liquid fertilizer:

[0038] (1) Using the second-class seawater in the Bohai Bay sea area as raw material, the organic organisms and impurities in the seawater are filtered through a microfiltration membrane with a pore size of 0.5 μm. The operating pressure of the microfiltration membrane is 0.1MPa;

[0039] (2) The seawater discharged from the microfiltration system enters the first-level nanofiltration system, and is circulated and concentrated through the first-level nanofiltration system. The pore size of the nanofiltration membrane is 1nm, and the operating pressure is 3MPa to remove most of the monovalent ions (Na+, Cl- , K+, Br-, I-), the remaining concentrated solution is mixed with tap water;

[0040] (3) The concentrated solution is mixed with tap water and then concentrated by a secondary nanofiltration system until the total amount of dissolved solids in the concentrated solution reaches 240g / L, whic...

Embodiment 3

[0045] A preparation method of manganese-copper seawater composite liquid fertilizer:

[0046] (1) Using the second-class seawater in the Bohai Bay sea area as raw material, the organic organisms and impurities in the seawater are filtered through a microfiltration membrane with a pore size of 0.5 μm. The operating pressure of the microfiltration membrane is 0.1MPa;

[0047] (2) The seawater discharged from the microfiltration system enters the first-level nanofiltration system, and is circulated and concentrated through the first-level nanofiltration system. The pore size of the nanofiltration membrane is 1nm, and the operating pressure is 4MPa to remove most of the monovalent ions (Na+, Cl- , K+, Br-, I-), the remaining concentrated solution is mixed with tap water;

[0048](3) The concentrated solution is mixed with tap water and then concentrated by a secondary nanofiltration system until the total amount of dissolved solids in the concentrated solution reaches 200g / L, whi...

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Abstract

The invention provides a seawater composite liquid fertilizer, a preparation method and application thereof. The additive takes seawater as a raw material, adopts a plurality of membrane technologiesto remove redundant sodium ions, chloride ions and harmful heavy metal ions in the seawater, and a liquid fertilizer mother liquor is produced to be used as a fertilizer for plants.

Description

technical field [0001] The invention belongs to the technical field of chemical fertilizers, and in particular relates to a seawater compound liquid fertilizer, a preparation method and an application. Background technique [0002] my country is a big country in the production and consumption of fertilizers in the world. It mainly uses solid fertilizers, and the proportion of liquid fertilizers is very small. In developed countries such as the United States and the United Kingdom, liquid fertilizers have been widely used. In recent years, due to the adjustment of my country's economic crop structure and the development of agricultural automation, the demand for liquid fertilizers is increasing. According to statistics, the output of liquid fertilizers in my country reached 902,000 tons in 2017. Liquid fertilizer has many advantages such as low production cost, high nutrient content, easy compounding, direct absorption by crops, convenient formula fertilization (balanced fert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05G3/00C05C3/00C05G5/20
Inventor 马敬环赵祈涵
Owner 天津海源汇科技有限公司
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