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Treatment method for cassava waste residue

A treatment method and waste residue technology, which can be applied to fertilizers made from biological waste, animal feed, additional food elements, etc., can solve the problems of cassava residue fermentation corruption, long processing time, and large energy consumption, and achieve environmentally friendly processes and efficient processing. The effect of low cost and high added value

Inactive Publication Date: 2019-01-08
TIANE COUNTY PINGCHANG ECOLOGICAL AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A large amount of processed solid waste, on the one hand, causes waste of land resources; on the other hand, long-term storage leads to fermentation and corruption of cassava residues, which not only reduces the utilization rate of cassava raw materials, but also causes adverse effects on the surrounding environment, thus affecting the comprehensive quality of cassava residues. Highlight the importance of using
[0003] At present, in the existing technology, the processing methods of cassava residues are mainly biogas utilization and feed utilization. Although the biogas utilization technology can meet the requirements of environmental protection, it has the defect of long processing time; in the process of feed utilization, wet cassava The slag is very easy to ferment and must be stored by dehydration and drying, but this process consumes a lot of energy, resulting in increased cost and high investment.

Method used

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  • Treatment method for cassava waste residue
  • Treatment method for cassava waste residue

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Experimental program
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Effect test

Embodiment 1

[0018] A kind of processing method of cassava waste residue, operation steps are as follows:

[0019] (1) drying the cassava waste residue to a water content of 18%, then adding a calcium hydroxide solution with a mass concentration of 30% to the cassava waste residue, stirring and mixing evenly, the mass ratio of the cassava waste residue to the calcium hydroxide solution is 0.3:1;

[0020] (2) Keep the temperature at 53°C for 12 days;

[0021] (3) Water vapor is introduced, and the amount of water vapor introduced is 1200m 3 / h, feed for 30 minutes, dehydrate, remove the treatment solution, the treatment solution can be recycled after dealkalization treatment, and the obtained treated cassava residue can be used as feed or fertilizer.

Embodiment 2

[0023] A kind of processing method of cassava waste residue, operation steps are as follows:

[0024] (1) Dry the cassava waste residue to a water content of 19%, then add a calcium hydroxide solution with a mass concentration of 35% to the cassava waste residue, stir and mix evenly, and the mass ratio of the cassava waste residue to the calcium hydroxide solution is 0.5:1.2;

[0025] (2) Keep the temperature at 56°C for 10 days;

[0026] (3) Water vapor is introduced, and the amount of water vapor introduced is 1300m 3 / h, feed for 20min, dehydrate, remove the treatment solution, the treatment solution can be recycled after dealkalization treatment, and the obtained treated cassava waste residue can be used as feed or fertilizer.

Embodiment 3

[0028] A kind of processing method of cassava waste residue, operation steps are as follows:

[0029] (1) drying the cassava waste residue to a water content of 18%, then adding a calcium hydroxide solution with a mass concentration of 33% to the cassava waste residue, stirring and mixing evenly, the mass ratio of the cassava waste residue to the calcium hydroxide solution is 0.4:1.1;

[0030] (2) Keep the temperature at 54°C for 11 days;

[0031] (3) Water vapor is introduced, and the amount of water vapor introduced is 1210m 3 / h, feed for 25 minutes, dehydrate, remove the treatment solution, the treatment solution can be recycled after dealkalization treatment, and the obtained treated cassava residue can be used as feed or fertilizer.

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Abstract

The invention discloses a treatment method for cassava waste residue. The treatment method comprises the following operating steps: (1) drying the cassava waste residue until the water content is 18%to 19%, then adding a calcium hydroxide solution into the cassava waste residue, stirring and mixing uniformly; (2) maintaining the temperature to be 53 to 56 DEG C, and allowing to stand for 10 to 12days; and (3) introducing water vapor, and then carrying out dehydration to obtain the treated cassava waste residue. The method is rapid and efficient, the process is environmentally-friendly, the obtained cassava waste residue after treatment can be used as feed or a fertilizer, the obtained liquid after treatment can be recycled after alkaline removal, and the product is high in additional value and low in treatment cost; and furthermore, the energy is saved, and the method is simple and is applicable for industrial large-scale application.

Description

technical field [0001] The invention relates to a method for processing waste residue, in particular to a method for processing cassava waste residue. Background technique [0002] my country's cassava production is about 10 million tons per year, and it is increasing by about 30% every year. Cassava contains a large amount of starch and is widely used for starch production and fermentation to produce alcohol. In the process of cassava processing, a large amount of cassava dregs are produced with the production of cassava starch and alcohol. The dry weight of cassava dregs processed by cassava starch in my country is 300,000 tons every year, and the cassava dregs processed by other products such as alcohol amount to 1.5 million tons , Taking a large starch processing enterprise with an annual output of 30,000 tons as an example, about 60,000 tons of wet cassava residues are produced each year, and a slag pond covering an area of ​​15 mu is required, and 30,000 tons of wet ca...

Claims

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Application Information

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IPC IPC(8): A23K10/37A23K20/24C05G1/00
CPCA23K10/37A23K20/24C05D3/02C05F5/002Y02P60/87
Inventor 张古权
Owner TIANE COUNTY PINGCHANG ECOLOGICAL AGRI