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Clean production method of seaweed fertilizer

A clean production and seaweed fertilizer technology, applied in the direction of organic fertilizers, fertilizer forms, fertilization devices, etc., can solve the problems of complex production process, waste discharge, high cost, etc., and achieve the goal of simple and effective production process, saving waste and zero discharge, and saving resources Effect

Inactive Publication Date: 2009-05-27
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patents generally have the disadvantages of complex production process, high cost, no comprehensive utilization of digested seaweed filter residue, and waste discharge, which do not meet the clean production requirements of saving resources and reducing the discharge of three wastes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. In a 2 cubic reaction kettle, add 1 ton of water and 42 kg of potassium hydroxide, use steam to heat up to 65°C, then add 140 kg of dry kelp, stir at the same time, and keep warm for 3 hours.

[0018] 2. Filter the digested kelp solution with a 150-mesh sieve.

[0019] 3. Neutralize the filtrate with 85% phosphoric acid, and the added weight of phosphoric acid is 3.2% of the filtrate weight. The obtained seaweed extract is directly used as liquid seaweed fertilizer.

[0020] 4. Mix the filter residue with furfural residue at a ratio of 1:1.2, then granulate, dry in the sun, and use it as a solid soil fertilizer.

Embodiment 2

[0022] 1. In a 2 cubic reaction kettle, add 1 ton of water and 45 kg of potassium hydroxide, use steam to heat up to 65°C, then add 120 kg of Ascophyllum nodosum, stir at the same time, and keep warm for 4 hours.

[0023] 2. Filter the digested Ascophyllum nodosum solution with a 150-mesh sieve.

[0024] 3. The filtrate is neutralized with 85% phosphoric acid, and the added weight of phosphoric acid is 3.2% of the weight of the filtrate to obtain seaweed extract, which is directly used as liquid seaweed fertilizer.

[0025] 4. Mix the filter residue with furfural residue at a ratio of 1:1.2, then granulate, dry in the sun, and use it as a solid soil fertilizer.

[0026] From June to September 2008, a production and application test was carried out in Shandong Rongcheng Taixiang Group Company. The liquid seaweed fertilizer produced above was used in the spinach planting in the vegetable planting base of Taixiang Group Company. The output of the liquid seaweed fertilizer experi...

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PUM

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Abstract

The invention relates to a clean production method for seaweed fertilizer, which comprises the following steps: 1) adding water and potassium hydroxide into a reaction kettle, heating the mixture, and then adding dry brown seaweed into the mixture, preserving temperature and digesting the mixture; 2) filtering the digested brown seaweed solution; 3) neutralizing the filtrate by phosphoric acid to obtain seaweed extract to be directly used as liquid seaweed fertilizer; and 4) mixing filter residue and furfural residue, and then pelletizing and drying the mixture to be used as solid soil fertilizer. When preparing the brown seaweed extract, the method neutralizes the brown seaweed filter residue and the furfural residue to prepare the solid soil fertilizer, so as to change waste into valuable and achieve resource conservation, environmental protection and zero discharge.

Description

technical field [0001] The invention belongs to the technical field of seaweed fertilizer production, and in particular relates to a zero-emission clean production method of seaweed fertilizer. Background technique [0002] Seaweed fertilizer is a fertilizer with seaweed extract as the core substance, which can significantly increase the yield of crops and has certain disease resistance. Since the product comes from natural seaweed active ingredients, it plays an important role in reducing table pollution and improving the safety and quality of agricultural products. Therefore, seaweed fertilizer is considered as the fourth generation replacement fertilizer and has broad development prospects. At present, most of the production processes of seaweed fertilizer are relatively complicated, consume high energy consumption, and do not make full use of the seaweed residue after extraction. For example, the patent application number 99103545.3 introduces a method for producing se...

Claims

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Application Information

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IPC IPC(8): C05F11/00C05G1/00C05G5/00
Inventor 辛福言刘淇殷邦忠朱兰兰朱伯清
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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