Treatment method for hyperosmosis concentrated mash waste liquor
A treatment method and a concentrated mash technology are applied in the treatment field of high-osmotic concentrated mash waste liquid, which can solve the problems of secondary soil pollution, incomplete humification, incomplete harmlessness, etc., and achieve improved sugar content and flavor. excellent effect
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[0025] Example 1:
[0026] The molasses fermentation waste liquid in this example comes from a large cassava alcohol fermentation production enterprise in Guangxi. The steps of harmless treatment are as follows:
[0027] 1) Concentration: heating and evaporating at 65°C to concentrate the molasses fermentation waste liquid to an organic content of 55%, and the concentrated liquid is obtained for cooling. After cooling, the concentrated liquid is divided into two parts for use, one for alkaline hydrolysis and dehydration, and one for acid Dehydration.
[0028] 2) Alkaline hydrolysis and dehydration: take part of the concentrated solution obtained in step 1), add 30% alkaline hydrolysis agent (lime, the content of CaCO3 in lime is ≥92%), and perform alkaline hydrolysis and dehydration for 30 min under low-speed stirring at 150 r / min. Add 10% calcium-magnesium phosphate fertilizer and 10% potash fertilizer and stir evenly to obtain the alkaline material.
[0029] 3) Acidolysis and dehy...
Example Embodiment
[0032] Example 2:
[0033] The molasses fermentation waste liquid in this example comes from a large cassava alcohol fermentation production enterprise in Guangxi. The steps of harmless treatment are as follows:
[0034] 1) Concentration: heating and evaporating at 85°C to concentrate the molasses fermentation waste liquid to 75% organic content, and the concentrated liquid is obtained for cooling. After cooling, the concentrated liquid is divided into two parts for use, one for alkaline hydrolysis and dehydration, and one for acid Dehydration.
[0035] 2) Alkaline hydrolysis and dehydration: take part of the concentrated solution obtained in step 1), add 35% alkaline hydrolysis agent (liquid ammonia), alkali hydrolysis and dehydration under low-speed stirring at 200 r / min for 25 minutes, and then add 13% calcium magnesium phosphate fertilizer, 15 % Potassium fertilizer is stirred evenly to obtain the alkaline material.
[0036] 3) Acid hydrolysis and dehydration: take part of the c...
Example Embodiment
[0039] Example 3:
[0040] The molasses fermentation waste liquid in this example comes from a large-scale cassava alcohol fermentation production enterprise in Guangxi. The steps of harmless treatment are as follows:
[0041] 1) Concentration: heating and evaporating at 50°C to concentrate the molasses fermentation waste liquid to 60% organic content, and the concentrated liquid is obtained for cooling. After cooling, the concentrated liquid is divided into two parts for use, one for alkaline hydrolysis and dehydration, and one for acid Dehydration.
[0042] 2) Alkaline hydrolysis and dehydration: take part of the concentrated solution obtained in step 1), add 25% alkaline hydrolysis agent (ammonium carbonate powder), alkaline hydrolysis and dehydration under low speed stirring at 150 r / min for 40 minutes, and then add 8% calcium magnesium phosphate fertilizer, 15% potash fertilizer is stirred evenly to obtain the alkaline material.
[0043] 3) Acid hydrolysis and dehydration: take...
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