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Method for preparing fertilizer by jointly treating agricultural waste with ultrasonic wave and alkali

A technology of combined treatment of agricultural waste, applied in the field of comprehensive utilization of agricultural waste, ultrasonic and alkali joint treatment of agricultural waste to prepare fertilizers, can solve the problems of low utilization rate, limited economic benefits, high water content, etc., and achieve improved production Efficiency, easy to mix evenly, and the effect of improving overall performance

Inactive Publication Date: 2017-11-14
江苏绿方园生物科技有限公司 +2
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art methods for treating agricultural wastes are relatively simple, mostly by directly fermenting agricultural wastes, and the solid organic fertilizers produced are often economically beneficial because of low nutrient content, simple production technology, and fierce competition in the same industry. limited
[0004] In addition, this fermentation method can only process one or a few types of waste, and there is a problem of secondary discharge of pollutants during the treatment process
In addition, with the development of agricultural cultivation technology, the application of drip irrigation, sprinkler irrigation and other technologies is becoming more and more extensive, and it is difficult for solid organic fertilizers to adapt to such fertilization methods.
[0005] In addition, for fresh agricultural wastes such as high water content, perishable, difficult to handle fresh animal carcasses, fresh plant residues, etc., due to their high content of active cells, traditional fermentation methods are difficult to control the conditions and direction of fermentation. The quality of the obtained fertilizer is not stable
[0006] Furthermore, the traditional fermentation method has no selectivity for the obtained products, and cannot maximize the utilization of the components and characteristics of different wastes, and the reuse effect is not good
[0007] Therefore, in view of the current technical situation, there is an urgent need for technologies with better adaptability and promotion value, to break through the current barrier of only one or a few kinds of wastes being used in one way, and to improve the backward utilization technology and utilization rate of agricultural wastes. Low current situation, this not only has good practical significance and environmental protection value, is the research hotspot and the key subject in the present field, but also the driving force and foundation that the present invention can be completed

Method used

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  • Method for preparing fertilizer by jointly treating agricultural waste with ultrasonic wave and alkali
  • Method for preparing fertilizer by jointly treating agricultural waste with ultrasonic wave and alkali
  • Method for preparing fertilizer by jointly treating agricultural waste with ultrasonic wave and alkali

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] S1: Provide the above-mentioned fertilizer preparation device, which includes a grinding mixer, an ultrasonic instrument, an acid-base adjustment tank, and a solid-liquid separator connected in sequence, and the solid-liquid separator is respectively connected to the downstream thickener and aerobic composting workshop;

[0069] S2: Adding fresh sick and dead pig carcasses and fresh corn plant residues into a grinding mixer in an equal mass ratio for mixing and grinding to obtain waste organic matter;

[0070] S3: Add the waste organic matter into the ultrasonic instrument, and add a NaOH aqueous solution with a mass percentage concentration of 10% (wherein, the mass ratio of NaOH to the waste organic matter is 1:4), after stirring evenly, turn on the ultrasonic instrument and Heating (ultrasonic frequency is 20kHz, ultrasonic power is 700W, sound energy density is 1W / mL; heating temperature is 50°C), after the mixture is fully reacted, stop ultrasonication and heating ...

Embodiment 2

[0076] S1: Provide the above-mentioned fertilizer preparation device, which includes a grinding mixer, an ultrasonic instrument, an acid-base adjustment tank, and a solid-liquid separator connected in sequence, and the solid-liquid separator is respectively connected to the downstream thickener and aerobic composting workshop;

[0077] S2: adding the mixture of livestock and poultry manure and mushroom residue with a mass ratio of 1:3 to a grinding mixer for mixing and grinding to obtain waste organic matter;

[0078] S3: Add the waste organic matter into the ultrasonic instrument, and add a KOH aqueous solution with a mass percentage concentration of 15% (wherein, the mass ratio of KOH to the waste organic matter is 1:4.5), after stirring evenly, turn on the ultrasonic instrument and Heating (ultrasonic frequency is 40kHz, ultrasonic power is 700W, sound energy density is 1.5W / mL; heating temperature is 60°C), after the mixture has fully reacted, stop ultrasonication and heat...

Embodiment 3

[0084] S1: Provide the above-mentioned fertilizer preparation device, which includes a grinding mixer, an ultrasonic instrument, an acid-base adjustment tank, and a solid-liquid separator connected in sequence, and the solid-liquid separator is respectively connected to the downstream thickener and aerobic composting workshop;

[0085] S2: Add the mixture of beverage factory waste residue, food factory waste and kitchen waste with a mass ratio of 1:1:1 into a grinding mixer for mixing and grinding to obtain waste organic matter;

[0086] S3: Add the waste organic matter into the ultrasonic instrument, and add a CaOH aqueous solution with a mass percentage concentration of 20% (wherein, the mass ratio of CaOH to the waste organic matter is 1:5), after stirring evenly, turn on the ultrasonic instrument and Heating (ultrasonic frequency is 60kHz, ultrasonic power is 700W, sound energy density is 2W / mL; heating temperature is 70°C), after the mixture is fully reacted, stop ultraso...

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Abstract

The invention relates to a method for preparing fertilizer by jointly treating agricultural waste with an ultrasonic wave and an alkali. The method comprises the following steps of S1, providing a fertilizer preparation device; S2, obtaining a waste organic matter; S3, obtaining a pretreated material; S4, carrying out solid-liquid separation, and obtaining liquid and a solid; S5, obtaining concentrated liquid fertilizer; S6, obtaining organic fertilizer. According to the method, through the unique fertilizer preparation device and unique process steps and the parameter selection of the preparation method, multiple excellent effects can be consequently obtained through a synergic effect; the concentrated liquid fertilizer and the organic fertilizer with excellent effects can be obtained; consequently, the method has favorable application prospect and industrialized production potential in the field of utilization of agricultural waste resources.

Description

technical field [0001] The invention relates to a method for comprehensive utilization of agricultural waste, more particularly to a method for preparing fertilizer from agricultural waste by combined ultrasonic and alkali treatment, and belongs to the technical field of resource recycling of agricultural waste. Background technique [0002] At present, in the vast rural areas of our country, there are many problems in the utilization of agricultural waste resources, such as: lack of corresponding technology and equipment; the processing technology of agricultural waste is simple and backward; the processing capacity and utilization scale are very limited and so on. Among them, the most important problem is that the existing agricultural waste utilization methods will cause environmental pollution. Most resources can only be discarded or incinerated, and the utilization rate is very low. For example, crop straw is mostly used as fuel for one-time utilization. Not only the en...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05F17/02
CPCC05F17/90C05F17/964C05G1/00Y02W30/40
Inventor 严媛媛冯雷雨戴星星马雪莲吴文丽王青青
Owner 江苏绿方园生物科技有限公司
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