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Liquid organic fertilizer for reducing soil heavy metal pollution and preparation method thereof

A heavy metal and organic fertilizer technology, applied in the direction of organic fertilizer, liquid fertilizer, chemical fertilizer treatment and control, etc., can solve the problems of low price of heavy metal pollution remediation, decline in soil fertility, damage to soil structure, etc., to increase the chelation effect and increase soil organic matter. , the effect of improving soil

Pending Publication Date: 2022-01-21
沈昕雯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For heavy metal pollution in farmland soil, there are methods such as replacing the polluted soil, rinsing the polluted soil, and solidifying the soil, etc. However, the amount of engineering is large, the investment cost is high, the soil structure will be destroyed, and the soil fertility will decrease. A single treatment method for soil heavy metal pollution cannot meet the requirements of modern agriculture for heavy metal pollution restoration with low price, high efficiency, and no secondary pollution

Method used

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  • Liquid organic fertilizer for reducing soil heavy metal pollution and preparation method thereof
  • Liquid organic fertilizer for reducing soil heavy metal pollution and preparation method thereof
  • Liquid organic fertilizer for reducing soil heavy metal pollution and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] A liquid organic fertilizer for reducing soil heavy metal pollution, comprising the following raw materials in parts by mass: 80 parts of cow dung, 50 parts of bagasse, 40 parts of cassava industrial sludge, 20 parts of fish processing waste, 20 parts of waste edible oil, microbial 3 parts of preparation, 10 parts of biochar, 5 parts of chelating agent, 10 parts of potassium dihydrogen phosphate, 10 parts of disodium hydrogen phosphate, 1000 parts of water;

[0027] The preparation method of the liquid organic fertilizer that reduces soil heavy metal pollution, comprises the following steps:

[0028] Step 1: Take the fish processing waste, bagasse, cassava industrial sludge and microbial preparations in parts by mass, mix them evenly, transfer them to a fermenter, keep the temperature of the fermenter at 25°C, and the humidity at 75%, and carry out aerobic fermentation 5 days;

[0029] Step 2: Add waste edible oil and cow dung in parts by mass to the fermenter, raise t...

Embodiment 2

[0032] A liquid organic fertilizer for reducing soil heavy metal pollution, comprising the following raw materials in parts by mass: 150 parts of cow dung, 80 parts of bagasse, 60 parts of cassava industrial sludge, 30 parts of fish processing waste, 50 parts of waste edible oil, microbial 8 parts of preparation, 30 parts of biochar, 8 parts of chelating agent, 30 parts of potassium dihydrogen phosphate, 30 parts of disodium hydrogen phosphate, 3000 parts of water;

[0033] The preparation method of the liquid organic fertilizer that reduces soil heavy metal pollution, comprises the following steps:

[0034] Step 1: Take the fish processing waste, bagasse, cassava industrial sludge and microbial preparations in parts by mass, mix them evenly, transfer them to a fermenter, keep the temperature of the fermenter at 35°C, and the humidity at 80%, and carry out aerobic fermentation 15 days;

[0035] Step 2: Add waste edible oil and cow dung in parts by mass to the fermenter, raise...

Embodiment 3

[0038] A liquid organic fertilizer for reducing soil heavy metal pollution, comprising the following raw materials in parts by mass: 110 parts of cow dung, 60 parts of bagasse, 50 parts of cassava industrial sludge, 25 parts of fish processing waste, 35 parts of waste edible oil, microorganism 5 parts of preparation, 20 parts of biochar, 7 parts of chelating agent, 20 parts of potassium dihydrogen phosphate, 20 parts of disodium hydrogen phosphate, 2000 parts of water;

[0039] The preparation method of the liquid organic fertilizer that reduces soil heavy metal pollution, comprises the following steps:

[0040] Step 1: Take the fish processing waste, bagasse, cassava industrial sludge and microbial preparations in parts by mass, mix them evenly, transfer them to a fermenter, keep the temperature of the fermenter at 30°C, and the humidity at 75%, and carry out aerobic fermentation 10 days;

[0041] Step 2: Add waste edible oil and cow dung in parts by mass to the fermenter, rai...

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Abstract

The invention relates to the technical field of organic fertilizers, in particular to a liquid organic fertilizer for reducing soil heavy metal pollution and a preparation method thereof. The liquid organic fertilizer comprises the following raw materials in parts by mass: 80-150 parts of cow dung, 50-80 parts of bagasse, 40-60 parts of cassava industrial sludge, 20-30 parts of fish processing waste, 20-50 parts of waste edible oil, 3-8 parts of a microbial preparation, 10-30 parts of charcoal, 5-8 parts of a chelating agent, 10-30 parts of monopotassium phosphate, 10-30 parts of disodium hydrogen phosphate and the balance of water. The bagasse, the cassava industrial sludge, the fish processing waste, the cow dung and the waste edible oil are fermented by the microbial preparation to prepare the liquid organic fertilizer, so that on one hand, the soil fertility can be improved, and on the other hand, the organic fertilizer contains a large amount of functional groups such as hydroxyl, carboxyl and amino, and is easily subjected to complex reaction with metal ions in the soil, and the soil heavy metal pollution can be reduced.

Description

technical field [0001] The invention relates to the technical field of organic fertilizers, in particular to a liquid organic fertilizer for reducing soil heavy metal pollution and a preparation method thereof. Background technique [0002] Industrial wastewater irrigation, industrial waste stacking, and the use of synthetic fertilizers in modern agriculture have caused a large amount of heavy metals to infiltrate farmland soil. In farmland soil, heavy metal pollution has become very serious. According to statistics, two-thirds of my country's farmland soil has heavy metals Exceeding the standard will seriously endanger the reduction of crop production and excessive heavy metals in crops. Heavy metals can accumulate in the food chain and eventually endanger human health. [0003] For heavy metal pollution in farmland soil, there are methods such as replacing the contaminated soil, rinsing the contaminated soil, and solidifying the soil, etc., but the amount of engineering is ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/30C05G3/80C05G5/20C05F17/20C05F17/50C05F17/70
CPCC05G3/00C05G3/30C05G3/80C05G5/20C05F17/20C05F17/50C05F17/70C05B7/00C05D9/00C05F1/002C05F3/00C05F5/002C05F7/00C05F9/00Y02W30/40
Inventor 沈昕雯
Owner 沈昕雯
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