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Process for producing organic liquid fertilizer by degrading water hyacinth by hydrothermal treatment process

A technology of organic liquid fertilizer and hydrothermal treatment, applied in the direction of organic fertilizer, etc., can solve the problems of blocked river channel pollution, water hyacinth cannot be effectively used, etc., and achieve the effect of short processing time, rich and comprehensive nutrients, and convenient pre-treatment

Inactive Publication Date: 2012-09-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is that the existing water hyacinth not only cannot be effectively utilized, but also blocks the river course and produces pollution

Method used

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  • Process for producing organic liquid fertilizer by degrading water hyacinth by hydrothermal treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Use the water hyacinth salvage boat to salvage the water hyacinth in the river channel, put the whole fresh water hyacinth into a pulverizer and pulverize to a sample size of 0.5-5 cm, and put the crushed water hyacinth together with the juice into the reaction tank. After the reaction tank is filled to the rated volume, it is sealed and the tank is heated at the maximum rate. When the indicated temperature in the tank reaches 200-280°C, keep the tank at this temperature for 0.5 to 3 hours. Then, the tank body is cooled to separate the finally formed hydrolysate from the residue. The obtained liquid is an organic liquid fertilizer, which can be directly poured on the soil or sprayed on the leaves after being diluted 10-50 times to promote plant growth.

Embodiment 2

[0025] Use the water hyacinth salvage boat to salvage the water hyacinth in the river, put the weighed fresh water hyacinth into the homogenizer, and add 0.01% to 1% of the water hyacinth weight. 2 CO 3 Beat the slurry together, move the slurry into the reaction tank, and seal the reaction tank after it is filled to the rated volume, and heat the tank at the maximum rate. When the indicated temperature in the tank reaches 150-250℃, keep the tank at this temperature for 0.5 to 3 hours. Then, the tank body is cooled, and the finally formed hydrolysate is separated from the residue. The obtained liquid is organic liquid fertilizer. According to the requirements of the soilless culture nutrient solution, nitrogen, phosphorus, potassium, calcium and magnesium and trace elements are configured to become an organic and inorganic nutrient solution. Used for soilless cultivation or other facility cultivation.

Embodiment 3

[0027] Use the water hyacinth salvage boat to salvage the water hyacinth in the river channel, put the whole fresh water hyacinth into a pulverizer and pulverize to a sample size of 0.5-5 cm, and put the crushed water hyacinth together with the juice into the reaction tank. After the reaction tank is filled, it is sealed and the tank is heated at the maximum rate. When the indicated temperature in the tank reaches 200-280°C, keep the tank at this temperature for 0.5 to 3 hours. Then, the tank body is cooled, and the finally formed hydrolysate is separated from the residue. The residue is used as a compost additive, and the addition amount is 10%-30%; the obtained liquid is compounded with different proportions of nitrogen fertilizer, phosphate fertilizer and potash fertilizer according to different crops to produce Various special fertilizers.

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Abstract

The invention discloses a process for producing an organic liquid fertilizer by degrading a water hyacinth by a hydrothermal treatment process. The process comprises the following steps of: crushing or pulping a whole fresh water hyacinth manually salvaged or salvaged by a salvage ship with a crushing device; placing the crushed water hyacinth and generated juice into a hermetically sealed container; under a sealed condition, keeping the temperature inside the hermetically sealed container to be between 150 and 300 DEG C and the pressure to be between 0.1 and 5.0MPa and performing a hydrothermal degradation reaction for 30 minutes to 3 hours; and performing solid-liquid separation on the mixed solution obtained by the degradation reaction, and preparing the liquid into the organic liquid fertilizer, plant nutrient fluid or a special fertilizer by using a small number of residues as composting additives. The process has the advantages of simple and feasible process and no secondary pollution in the whole process by using the water hyacinth as a raw material for producing the organic liquid fertilizer. The obtained organic liquid fertilizer has the advantages of comprehensive nutrition and good utilization effect and well realizes the resource utilization of the water hyacinth.

Description

Technical field [0001] The present invention relates to a process for producing organic liquid fertilizer by hydrothermal treatment with water hyacinth as a raw material. The product can be used in the cultivation (including soilless cultivation) of flowers, fruits, vegetables and seedlings, and belongs to the field of agricultural fertilizers. Background technique [0002] Water hyacinth (Eichhornia crassipes), also known as water hyacinth, is a genus of water hyacinth in the Yujiu flower family, and is a perennial floating herb. Water hyacinth was widely promoted and planted as fodder in the 1960s and 1970s when my country was most in short supply of food, which contributed to the development of my country's aquaculture industry. However, with the rapid development of my country's economy, mixed feed has gradually replaced water hyacinth, causing the utilization rate of water hyacinth to be greatly reduced and become wild. At the same time, the increasing water pollution has p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F11/02
Inventor 罗光恩石沁吟石伟勇贾燕芳倪亮陈晓萍谢亚军单英杰何延徐国锐金芳芳颜军
Owner ZHEJIANG UNIV
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