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Treatment method for hyperosmosis concentrated mash waste liquor

A treatment method and technology for concentrated liquid, applied in the field of treatment of high-osmotic concentrated mash waste liquid, can solve the problems of incomplete humification, secondary soil pollution, single acidification or alkalization process, etc. The effect of increasing sugar content

Active Publication Date: 2015-04-08
GUANGXI XINTIANDE ENERGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to aim at the incomplete harmlessness of molasses fermentation waste liquid used in fertilizer production in the prior art, the single humification acidification or alkalization process, resulting in poor humification effect and incomplete humification, Fertilizer containing molasses fermentation waste liquid causes secondary pollution to the soil during use, and the fertilizer has no effect on the growth of crops. A treatment method for high-osmosis concentrated mash waste liquid is provided. This method proposes to use acidification or alkalization for treatment The method of process integration, the molasses fermentation waste liquid concentrate is subjected to acid and alkali humification respectively, and then the two are moderately neutralized so that the humified fermentation waste liquid can be used to prepare a variety of organic / inorganic hybrid compound fertilizers

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  • Treatment method for hyperosmosis concentrated mash waste liquor

Examples

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Effect test

Embodiment 1

[0026] The molasses fermentation waste liquid of this embodiment comes from a large-scale cassava alcohol fermentation production enterprise in Guangxi. The harmless treatment steps are as follows:

[0027] 1) Concentration: Heat and evaporate at 65°C to concentrate the molasses fermentation waste liquid to an organic matter content of 55%, and then cool the concentrated liquid. After cooling, the concentrated liquid is divided into two parts for use, one part is used for alkaline hydrolysis dehydration, and the other part is used for acid Dehydration.

[0028] 2) Alkaline hydrolysis dehydration: Take part of the concentrated solution obtained in step 1), add 30% alkali hydrolysis agent (lime, the content of CaCO3 in the lime is ≥ 92%), alkali hydrolysis dehydration for 30 minutes under the condition of 150 r / min low-speed stirring, and then Add 10% calcium-magnesium phosphate fertilizer and 10% potassium fertilizer and stir evenly to obtain the alkaline solution seasoning. ...

Embodiment 2

[0033] The molasses fermentation waste liquid of this embodiment comes from a large-scale cassava alcohol fermentation production enterprise in Guangxi. The harmless treatment steps are as follows:

[0034] 1) Concentration: Heat and evaporate at 85°C to concentrate the molasses fermentation waste liquid to an organic matter content of 75%, and obtain the concentrated liquid for cooling. After cooling, the concentrated liquid is divided into two parts for use, one part is used for alkaline hydrolysis dehydration, and the other part is used for acid Dehydration.

[0035] 2) Alkaline hydrolysis dehydration: Take part of the concentrated solution obtained in step 1), add 35% alkali hydrolysis agent (liquid ammonia), and dehydrate it for 25 minutes under low-speed stirring at 200 r / min, then add 13% calcium magnesium phosphate fertilizer, 15 % potash fertilizer was stirred evenly to obtain the alkaline solution seasoning.

[0036] 3) Acidolysis and dehydration: take part of the ...

Embodiment 3

[0040] The molasses fermentation waste liquid of this embodiment comes from a large-scale cassava alcohol fermentation production enterprise in Guangxi. The harmless treatment steps are as follows:

[0041] 1) Concentration: Heat and evaporate at 50°C to concentrate the molasses fermentation waste liquid to an organic matter content of 60%, and then cool the concentrated liquid. After cooling, the concentrated liquid is divided into two parts for use, one part is used for alkaline hydrolysis dehydration, and the other part is used for acid Dehydration.

[0042] 2) Alkaline hydrolysis dehydration: take part of the concentrated solution obtained in step 1), add 25% alkali hydrolysis agent (ammonium carbonate powder), alkali hydrolysis dehydration for 40 minutes under the condition of 150 r / min low-speed stirring, then add 8% calcium magnesium phosphate fertilizer, 15% potash fertilizer was stirred evenly to obtain alkaline solution seasoning.

[0043] 3) Acid hydrolysis and de...

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Abstract

The invention discloses a treatment method for hyperosmosis concentrated mash waste liquor. The treatment method comprises the steps of (1) concentration: concentrating molasses fermentation waste liquor, wherein one part of molasses fermentation waste liquor is used for alkaline hydrolysis dewatering and the other part is used for acidolysis dewatering; (2) alkaline hydrolysis dewatering: adding 10-35 percent of an alkaline hydrolysis agent into the concentrated liquor, performing low-speed stirring, adding 5-15 percent of a calcium magnesium phosphate fertilizer and 10-15 percent of a potash fertilizer and uniformly stirring to obtain an alkaline hydrolysis mixture; (3) acidolysis dewatering: adding 10-35 percent of an acidolysis agent into the concentrated liquor, and performing low-speed stirring to obtain an acidolysis mixture; (4) preparation of neutralizing mixture: mixing the alkaline hydrolysis mixture and the acidolysis mixture to generate acid-alkaline neutralization until the pH is 5-7; (5) drying: drying the neutralized mixture until the moisture content is less than or equal to 10 percent. By the adoption of an acidification-alkalization combined method, the concentrated hyperosmosis concentrated mash waste liquor is subjected to acid and alkaline humification respectively, so that a neutralizing agent which is added when acid and alkaline humifications are carried out separately is saved, and a dual-purpose effect is achieved.

Description

technical field [0001] The invention belongs to the field of industrial waste recovery and utilization, and relates to a treatment method for hyperosmotic concentrated mash waste liquid. Background technique [0002] Molasses is the residual syrup in the sugar making process, and the fermentation of molasses is actually a process of further biochemical degradation and transformation of organic matter. When domestic alcohol is produced with molasses as raw material, about 4 tons of molasses are consumed for every 1 ton of alcohol produced, and about 14 tons of waste liquid is discharged. The pH value of the waste liquid is generally 3.0-3.5, mainly containing carbohydrates (polysaccharides) and alcohols. The pH value of molasses yeast wastewater is generally 4.0-5.0, mainly containing residual sugar, nutrient salt, some yeast cells and pectin and other biodegradable macromolecular organic matter. In addition to a small amount of glutamic acid, the molasses monosodium glutama...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F5/00
CPCY02A40/20
Inventor 徐大鹏冯英邓文生
Owner GUANGXI XINTIANDE ENERGY