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Treatment method of waste mash of cane sugar factory

A treatment method and technology for waste mash, which are applied in the fields of food industry wastewater treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc. Or the technology is immature, the by-products do not have a stable market, etc., to achieve the effect of easy promotion, good environmental protection and small investment

Active Publication Date: 2013-09-25
保山九隆酵母有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The current problem is that the price of single-cell protein feed is only about 2,000 yuan per ton, while the production cost is as high as 6,000 yuan or more.
However, there are also problems to varying degrees, such as: immature treatment process or technology, complex and unsuitable equipment, high investment and operating costs, no stable market for by-products, complex operation and management, new secondary pollution problems in governance, etc.; Continuously and effectively solve the problem of waste mash treatment and utilization

Method used

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  • Treatment method of waste mash of cane sugar factory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 The treatment method of the waste mash of the shown sugarcane sugar factory:

[0042] (1) Pre-treatment: Measure the molasses alcohol waste mash discharged from the alcohol workshop into 1 and adjust the pH to 5.5 with ammonium bicarbonate;

[0043] (2) Primary concentration: Send the waste mash obtained in step (1) with a pH of 5.5 into a four-effect vacuum falling film evaporator 2 with an evaporation pressure of 450kpa to evaporate to a waste mash with a mass concentration of 40%. , the cooling water produced after its evaporation is put into the cooling water pool 3 and then recycled to the fermentation workshop of the sugar factory;

[0044] (3) Cooling and sedimentation and thick slurry drying: the primary concentrated liquid obtained in step (2) is transported to the separator 5 through the cooler 4 for sedimentation and separation for 24 hours. After separation and sedimentation, a supernatant liquid and a lower thick slurry are formed in the s...

Embodiment 2

[0047] Such as figure 1 The treatment method of the waste mash of the shown sugarcane sugar factory:

[0048] (1) Pretreatment: Measure the molasses alcohol waste mash discharged from the alcohol workshop into 1 and adjust the pH to 6 with ammonium bicarbonate;

[0049] (2) Primary concentration: Send the waste mash obtained in step (1) with a pH of 6 to a four-effect vacuum falling film evaporator 2 with an evaporation pressure of 475kpa to evaporate to a waste mash with a mass concentration of 45%. , the cooling water produced after its evaporation is put into the cooling water pool 3 and then recycled to the fermentation workshop of the sugar factory;

[0050](3) Cooling and sedimentation and thick slurry drying: The primary concentrate obtained in step (2) is transported to the separator 5 through the cooler 4 for sedimentation and separation for 25 hours. After separation and sedimentation, a supernatant liquid and a lower thick slurry are formed in the separator , the ...

Embodiment 3

[0053] Such as figure 1 The treatment method of the waste mash of the shown sugarcane sugar factory:

[0054] (1) Pre-treatment: Measure the molasses alcohol waste mash discharged from the alcohol workshop into 1 and adjust the pH to 6.5 with ammonium bicarbonate;

[0055] (2) Primary concentration: Send the waste mash obtained in step (1) with a pH of 6.5 into a four-effect vacuum falling film evaporator 2 with an evaporation pressure of 500kpa to evaporate to a waste mash with a mass concentration of 50%. , the cooling water produced after its evaporation is put into the cooling water pool 3 and then recycled to the fermentation workshop of the sugar factory;

[0056] (3) Cooling and sedimentation and thick slurry drying: the primary concentrated liquid obtained in step (2) is transported to the separator 5 through the cooler 4 for sedimentation and separation for 26 hours. After separation and sedimentation, a supernatant liquid and a lower thick slurry are formed in the s...

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Abstract

The invention discloses a treatment method of waste mash of a cane sugar factory, belonging to the technical field of industrial wastewater treatment. The method comprises the following steps of: (1) pretreatment; (2) primary concentration; (3) cooling sedimentation and dense slurry drying; (4) secondary concentration and drying. The technical method disclosed by the invention has the advantages of small investment, simple equipment and easiness in popularization; the product after treatment is a high-quality high value-added (fully water-soluble) potassium humate product, and a new mode of treatment and profit enabling sustainable development is realized; the environmental protection treatment effect is good, water balance is realized through final water quality treatment, real zero emission is realized, and the problem of waste mash of a cane sugar factory can be solved fundamentally; energy is saved in operation, and the feasibility is high.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, in particular to a treatment method for waste mash from a sugarcane sugar factory. Background technique [0002] At present, the treatment methods of waste mash in sugar factories mainly include the following methods: [0003] 1) Agricultural irrigation method [0004] Since the main components of the waste mash are organic substances such as amino acids and humic acid, it is a very good organic fertilizer. Moreover, the waste mash also contains a certain amount of nitrogen, phosphorus and potassium. As long as its pH value is adjusted properly, it can be directly applied to farmland. Due to the geographical conditions of the fertilization site, the time of fertilization of crops and the limitation of waste mash transportation cost, especially the contradiction between the continuity of sugar factory production and the intermittent irrigation of farmland, this method cann...

Claims

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Application Information

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IPC IPC(8): C02F9/10C05F5/00C02F103/32
CPCY02A40/20
Inventor 王硕杨海平叶开润王立常
Owner 保山九隆酵母有限公司
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