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A method for preparing self-slow-release seaweed fertilizer capable of degrading organic pollutants

A technology of organic pollutants and seaweed fertilizer, which is applied to the treatment of organic fertilizers, inorganic fertilizers, and bio-organic parts, and can solve problems such as high cost, large waste of fertilizer raw materials, and inability to achieve quick and long-term crop nutrient needs.

Active Publication Date: 2021-07-27
BAODING JINGWEI TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a self-slow-release seaweed fertilizer preparation method capable of degrading organic pollutants, which utilizes polysaccharides contained in seaweed itself to cross-link with macromolecular substances to form macromolecular slow-release products, so as to solve the problem of large waste of fertilizer raw materials and high cost. High, unable to meet the needs of crops for quick-acting and long-acting nutrients

Method used

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  • A method for preparing self-slow-release seaweed fertilizer capable of degrading organic pollutants
  • A method for preparing self-slow-release seaweed fertilizer capable of degrading organic pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Preparation of self-slow-release seaweed fertilizer capable of degrading organic pollutants

[0032] Specifically, the following steps are included:

[0033] (1) Raw material pretreatment: soak 100 kg of seaweed in water and wash it several times;

[0034] (2) Adjust the water content of the seaweed raw material after pretreatment to 40-50%, add acetic acid to adjust the pH to 4-7, add 3% cellulase, 1% pectinase, 2% non-algae according to the amount of enzyme / algae mass ratio Amylopolysaccharase, 1% papain, 1% helicase and temperature control 25 ~ 45 ℃ use multi-stage series enzymatic hydrolysis for 10 ~ 24h, the level of multi-stage series enzymatic hydrolysis is set to 6 levels, the temperature range of each level of enzymatic hydrolysis It is controlled between 25-45°C, the pH is controlled between 4-7, and the temperature gradually increases from the first level to the next level, while the pH value gradually decreases. After enzymatic hydrolysis, centri...

Embodiment 2

[0040] Example 2 Verification of water retention effect of self-slow-release seaweed fertilizer capable of degrading organic pollutants

[0041] Get example 1 self slow-release saline-alkali soil improvement seaweed fertilizer, measure its impact on soil water retention. The soil without fertilizer particles has a water retention rate of about 28%, and after drying for 15 days in the natural state, almost loses all water; while the soil with 5%, 10% and 15% fertilizer particles, respectively, has a water retention rate of 39%. %, 68% and 77%, after drying for 15 days in the natural state, the water retention rate is still 29%, 52% and 61%. It can be seen that the self-slow-release seaweed fertilizer not only has a good water absorption capacity, but also has a good water retention capacity after being added to the soil. This characteristic of fertilizer granules is mainly due to the self-trehalose and its macromolecular cross-linked products in the seaweed fertilizer, which c...

Embodiment 3

[0042] Example 3 In-situ remediation of self-slow-release seaweed fertilizer capable of degrading organic pollutants

[0043] Thickness is 30 centimeters, area is the treatment area of ​​100 square meters, spread and spray 30kg of self-slow-release seaweed fertilizer that can degrade organic pollutants evenly in the soil polluted by organic pollutants, plow the soil to make the mixture and the polluted soil Mix well.

[0044] At the same time, add water and carry out plowing and oxygenation of the soil. When performing in-situ bioremediation of the soil, the thickness of the remediation soil should be controlled within 30 cm, and the soil should be plowed once a week on average within one month after inoculation; Then plow once every two weeks, and add water at any time to keep the moisture content of the soil above 30%, and the added water should not contain fungicide ingredients.

[0045] The test results found that: for soil with an oil content of 8% (W / W), after one month...

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Abstract

The invention discloses a self-slow-release seaweed fertilizer preparation method capable of degrading organic pollutants, comprising the following steps: raw material pretreatment; enzymatic hydrolysis and centrifugation; preparation of modified seaweed gel compound liquid; granulation; and coating. The product of the present invention uses polysaccharides and macromolecular substances of seaweed itself to carry out cross-linked slow-release components and enzymatic hydrolysis to facilitate crop absorption. Root nutrient absorption can significantly increase the utilization rate of chemical fertilizers and reduce environmental pollution; it can reduce the amount of chemical fertilizers and pesticides used and the frequency of fertilization, reduce the labor intensity of fertilization, save labor, and improve the soil fertility level of fertilized soil. After using the sludge remediation agent for 1 to 6 months, the effective removal rate of various pollutants in the soil reaches more than 95%, which meets the national standard. At the same time, the fermentation product is beneficial to agricultural production, reducing the use of chemical reagents and fertilizers, and eliminating pollution sources and secondary pollution from the source.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of effective components of seaweed, in particular to a preparation method of self-slow-release seaweed fertilizer capable of degrading organic pollutants. Background technique [0002] Seaweed is rich in reserves and contains a variety of active ingredients, which have important applications in food, medicine, daily chemicals, fertilizers, feed and other fields. Relying on the abundant large seaweed resources, my country has established a large-scale large seaweed production and processing industry, forming a large seaweed industrial system with brown algae and red algae as the main body, involving food, feed, medicine, chemical industry and other fields, becoming a marine industry. important part of the economy. At present, the processing of large seaweed in my country mainly involves the extraction and processing of seaweed gums such as alginate, agar gum, and carrageenan. At ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/40C05G3/80C05G5/12C05G5/30C05F17/20
CPCC05B7/00C05G3/00C05F17/50C05G3/80C05G5/12C05G5/30C05C3/00C05C9/00C05D1/02C05D9/00C05D9/02C05F3/00C05F11/00C05F11/02C05F11/08Y02W30/40
Inventor 蒋小丽蒋彦昌马建桥张正兴
Owner BAODING JINGWEI TEXTILE CO LTD
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