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Method for producing liquid fertilizer by using glutamic acid wastewater

A liquid fertilizer, glutamic acid technology, applied in sewage/sludge fertilizers, organic fertilizers, fertilizer mixtures, etc., can solve the problems of not particularly obvious effect, single inorganic fertilizer composition, low utilization rate, etc., and achieve locked nutrient control. Loss, the preparation method is simple and feasible, and the effect of delaying the release of nutrients

Active Publication Date: 2015-01-28
内蒙古阜丰生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The development and application of fertilizers in my country is from farmyard manure to the use of inorganic fertilizers as the main stage. Because farmyard manure has many pollution sources and large transportation volume, it is time-consuming and laborious to operate and the effect is not particularly obvious; while inorganic fertilizer has a single component and a relatively low utilization rate. Low, and often cause soil compaction and soil erosion to pollute water sources, affecting the ecological environment
At present, inorganic compound fertilizers containing nitrogen, phosphorus and potassium are mostly used in the market. The compound fertilizer has comprehensive fertilizer effects, but there are also defects such as short-lasting fertilizer effects and easy loss; more importantly, the current price of compound fertilizers is relatively high, which brings great harm to farmers. How to reduce fertilizer costs and increase farmers' income is a technical problem that modern agriculture needs to solve

Method used

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  • Method for producing liquid fertilizer by using glutamic acid wastewater
  • Method for producing liquid fertilizer by using glutamic acid wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method utilizing glutamic acid waste water to produce liquid fertilizer, it comprises the steps:

[0030] Step 1) Filtration of fermentation broth: the glutamic acid fermentation broth is sterilized by microfiltration membrane filtration, and the retentate and filtrate are collected respectively; The retentate and concentrated liquid are combined into feed liquid A for later use; among them, the microfiltration membrane is an inorganic ceramic membrane with a molecular weight cut-off of 2000MW and a microfiltration temperature of 40°C; the ultrafiltration membrane has a molecular weight cut-off of 300MW and an ultrafiltration temperature of 40°C;

[0031] Step 2) Decolorization, concentration and crystallization: The permeate obtained in step (1) is pumped into the decolorization tank for decolorization treatment, and 0.5% activated carbon of the permeate mass is added to the decolorization tank, and the temperature in the decolorization tank is controlled at 45°C. Aft...

Embodiment 2

[0037] A method utilizing glutamic acid waste water to produce liquid fertilizer, it comprises the steps:

[0038] Step 1) Filtration of fermentation broth: the glutamic acid fermentation broth is sterilized by microfiltration membrane filtration, and the retentate and filtrate are collected respectively; The retentate and concentrated liquid are combined into feed liquid A for later use; among them, the microfiltration membrane is an inorganic ceramic membrane with a molecular weight cut-off of 2000MW and a microfiltration temperature of 40°C; the ultrafiltration membrane has a molecular weight cut-off of 300MW and an ultrafiltration temperature of 40°C;

[0039] Step 2) Decolorization, concentration and crystallization: The permeate obtained in step (1) is pumped into the decolorization tank for decolorization treatment, and 0.5% activated carbon of the permeate mass is added to the decolorization tank, and the temperature in the decolorization tank is controlled at 45°C. Aft...

Embodiment 3

[0044] Fertilizer effect test of fertilizer of the present invention

[0045] 1. Take tomato as an example:

[0046] Effect of the liquid fertilizer prepared in Example 1 of the present invention on tomato yield and quality. The test group additionally sprays the preparation of the present invention, and the matched group is sprayed with equal amount of clear water. The tomato variety is ginkgo strong, 100kg per mu of land, and the two groups of other planting conditions are identical. The results are shown in Table 1. The application of this product can increase tomato yield, shorten the time to market, enhance tomato disease resistance, improve fruit quality, and increase the economic value of tomato fruit.

[0047] Table 1

[0048]

[0049] 2. Take cucumber as an example:

[0050] Effect of the liquid fertilizer of Example 1 of the present invention on cucumber yield and quality. The variety of cucumber tested in the spring greenhouse was Jinchun No. 3, which was cu...

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Abstract

The invention belongs to the field of treatment of amino acid fermentation wastewater and discloses a method for producing liquid fertilizer by using glutamic acid wastewater. The method comprises the following steps: S1) filtering fermentation liquor; S2) decoloring, concentrating and crystallizing; S3) separating ammonium sulfate crystals; S4) hydrolyzing; and S5) preparing the fertilizer. According to the method, glutamic acid fermentation wastewater is utilized, so that the production cost of the fertilizer is greatly lowered, and wastes are turned into wealth. Moreover, the effect of the fertilizer is superior to that of marketed similar products.

Description

[0001] technical field [0002] The invention belongs to the field of amino acid fermentation waste water treatment, and in particular relates to a method for producing liquid fertilizer by utilizing glutamic acid waste water. [0003] Background technique [0004] Glutamic acid is an acidic amino acid. The molecule contains two carboxyl groups, and its chemical name is α-aminoglutaric acid. Glutamic acid was discovered by Li Suxun in 1856. It is a colorless crystal with umami taste. It exists in a large amount in cereal protein, and the content in animal brain is also high. Glutamic acid plays an important role in the protein metabolism process in organisms, and participates in many important chemical reactions in animals, plants and microorganisms. Sodium glutamate, commonly known as monosodium glutamate, is an important umami agent that enhances the fragrance. Sodium glutamate is widely used as a food flavoring agent, either alone or in combination with other amino ac...

Claims

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Application Information

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IPC IPC(8): C05G3/00C01C1/24
CPCC05B17/00C05F7/00C05G3/80C05C9/00C05C11/00C05F11/02
Inventor 张传森卢松包鑫梁晓娟朱心双徐彩凤邵风慧
Owner 内蒙古阜丰生物科技有限公司
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