CN101439995A

CN101439995A - Clean production method of seaweed fertilizer

Info

Publication number: CN101439995A
Application number: CNA2008102386839A
Authority: CN
Inventors: 辛福言; 刘淇; 殷邦忠; 朱兰兰; 朱伯清
Original assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Current assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Priority date: 2008-12-22
Filing date: 2008-12-22
Publication date: 2009-05-27
Anticipated expiration: 2028-12-22
Also published as: CN101439995B

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

Clean production method of seaweed fertilizer

Technical field

The invention belongs to the seaweed fertilizer production technical field, relate to a kind of clean production method of seaweed fertilizer of zero release specifically.

Background technology

Seaweed fertilizer is to be the fertilizer of core substance with the Seaweed Extract, can significantly improve the output of farm crop, and has certain resistant effect.Because this product from the natural seaweed activeconstituents, has vital role in the safe mass that reduces pollution of dining table, raising agricultural-food.Therefore seaweed fertilizer is considered to the fertilizer of the 4th generation update, has vast potential for future development.The most more complicated of production technique of present seaweed fertilizer, the energy consumption height does not make full use of the marine alga residue after extracting.Introduce a kind of method of acid, alkali secondary digestion that adopts as application number 99103545.3 patents and produced seaweed extracted liquor; Application number 01135137.3 and 200410020889.6 patents adopt ethanol, methanol extraction seaweed plant growth hormone respectively; The method of explained hereafter marine alga natural organic fertilizer such as application number 03140416.2 patent has been introduced by lixiviate, neutralization, concentrated, dialysis, drying; The method that application number 03133732.5 patent adopts dry seaweed and fresh marine alga to extract respectively prepares the stress-resistant seaweed fertilizer; It is to extract under the digestive pharmaceutical 70-100 ℃ condition that application number 98101040.7 patents have been introduced a kind of employing potassium hydroxide, is equipped with the method that obtaining property fish hydrolyzed solution is produced functional marine alga fertilizer more.Above patent ubiquity production process complexity, cost height do not fully utilize, have the shortcoming of waste discharge to postdigestive marine alga filter residue, do not meet the cleaner production requirement that economizes on resources, reduces three waste discharge.

Summary of the invention

The purpose of this invention is to provide a kind of clean production method of seaweed fertilizer, in preparation brown alga extracting solution, with in brown alga filter residue and the furfural dregs and preparation solid soil fertilizer, turn waste into wealth, realization economizes on resources, protects the purpose of environment.

Technical solution of the present invention is:

1, in reactor, add 40-50 kg of hydrogen potassium oxide in the water per ton, heat temperature raising adds the dried brown alga insulation of 120-150 kilogram then and digested in 2-4 hour to 60-69 ℃.

Described brown alga is sea-tangle, sargassun and bladder wrack, but one or more mix use.

2, postdigestive brown alga solution is filtered with 150 mesh sieve thin,tough silk.

3, filtrate is neutralized with 85% phosphoric acid, the adding weight of phosphoric acid is the 3-3.5% of filtrate weight, and getting seaweed extracted liquor can be directly as the liquid seaweed fertilizer.

4, filter residue is mixed with furfural dregs in the 1:1-1.5 ratio, granulation is then dried, as the solid soil and fertilizer.

Characteristics of the present invention are:

(1) adopt that potassium hydroxide digests, phosphoric acid is as neutralizing agent, avoided using sodium hydroxide or yellow soda ash to bring excessive sodium ion into and use hydrochloric acid to bring into the deleterious chlorion of plant as neutralizing agent as digestive pharmaceutical, need not desalination in the subsequent handling, potassium and phosphorus also are the important nutrient in the fertilizer simultaneously.

(2) in the production process not with an organic solvent, the protection environment.

(3) filter residue that will be alkalescence be the tart furfural dregs and mix stirring, acid-base neutralisation had not only solved the alkalescence of brown alga extraction filter residue but also had solved and had been tart furfural dregs waste material, made solid soil fertilizer jointly.

(4) production technique is simply effective, has really realized economizing on resources and the refuse zero release.

Embodiment

Be that embodiment elaborates to the present invention with sea-tangle and bladder wrack respectively below:

Embodiment one:

1, in 2 cubical reactors, add 1 ton of water, 42 kg of hydrogen potassium oxides, use steam-heated cal(l)andria to be warming up to 65 ℃, add 140 kilograms of dried sea-tangles then, stir simultaneously, be incubated 3 hours.

2, postdigestive sea-tangle solution is filtered with 150 mesh sieve thin,tough silk.

3, filtrate 85% phosphoric acid is neutralized, the adding weight of phosphoric acid is 3.2% of filtrate weight.Get seaweed extracted liquor, directly as the liquid seaweed fertilizer.

4, filter residue is mixed with furfural dregs in the 1:1.2 ratio, granulation is then dried, as the solid soil and fertilizer.

Embodiment two:

1, in 2 cubical reactors, add 1 ton of water, 45 kg of hydrogen potassium oxides, use steam-heated cal(l)andria to be warming up to 65 ℃, add the 120 kg bladder wrack then, stir simultaneously, be incubated 4 hours.

2, postdigestive bladder wrack solution is filtered with 150 mesh sieve thin,tough silk.

3, filtrate is neutralized with 85% phosphoric acid, the adding weight of phosphoric acid is 3.2% of filtrate weight, gets seaweed extracted liquor, directly as the liquid seaweed fertilizer.

In June, 2008, safe auspicious group company carried out the production application test in the Rongcheng, Shandong to September.The liquid seaweed fertilizer of above-mentioned production is used in the spinach plantation in the growing vegetables base of the auspicious group company of Thailand, liquid seaweed fertilizer experimental group yield increased with dried sea-tangle preparation improves 22%, with the liquid seaweed fertilizer experimental group yield increased raising 19% of bladder wrack preparation.Solid soil fertilizer is used in the green cucumber in the growing vegetables base of the auspicious group company of Thailand, and output is all compared according to raising 15%, and the taste sweetness, and product are of fine quality.Illustrate that the seaweed fertilizer of using the present invention to produce can effectively improve vegetable crop, improve quality, economic benefit and obvious social benefit.

Claims

1, a kind of clean production method of seaweed fertilizer is characterized in that his method is:

(1) in reactor, add 40-50 kg of hydrogen potassium oxide in the water per ton, heat temperature raising adds the dried brown alga insulation of 120-150 kilogram then and digested in 2-4 hour to 60-69 ℃;

Described brown alga is sea-tangle, sargassun and bladder wrack, but one or more mix use;

(2) postdigestive brown alga solution is filtered with 150 mesh sieve thin,tough silk;

(3) filtrate is neutralized with 85% phosphoric acid, the adding weight of phosphoric acid is the 3-3.5% of filtrate weight, and getting seaweed extracted liquor can be directly as the liquid seaweed fertilizer;

(4) with filter residue in 1: the 1-1.5 ratio is mixed with furfural dregs, and granulation is then dried, as the solid soil and fertilizer.