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Comprehensive treatment method of enzyme preparation industrial wastewater

A treatment method and technology for industrial wastewater, applied in water/sewage treatment, degassed water/sewage treatment, multi-stage water/sewage treatment, etc., can solve problems such as pollution, high production costs, and low economic benefits, and achieve economical improvement benefit, reduce production cost, and realize the effect of comprehensive utilization

Active Publication Date: 2018-02-16
山西恩泽生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to solve the shortcomings of serious pollution, high production cost and low economic benefit in the prior art, this part of impurities must be removed in waste salt

Method used

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  • Comprehensive treatment method of enzyme preparation industrial wastewater
  • Comprehensive treatment method of enzyme preparation industrial wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Take 10 L of extraction waste liquid. Concentrate in a vacuum concentrator, the vacuum degree is -0.086MPa, concentrate to 1.1 liters, and cool for 3 hours. At this time, the room temperature is 21 ° C, and the solid-liquid mixture is concentrated by centrifugation for 22 minutes to obtain 3300 grams of wet crystals with a water content of 8%. Then put it in a boiling furnace and burn it for 200 minutes at a temperature of 720°C. The generated gas is introduced into the treatment tower at about 700°C, and a spray device is installed on the upper part of the treatment tower, and the mixture made of calcium carbide slag and water (the weight ratio of the two is 1:9, pH10) is sprayed from the spray device from the top And the lower jet is in contact with the high-temperature flue gas for full absorption. When the flue gas temperature drops to about 160°C, the ozone (10wt%) produced by the ozone generator enters the treatment tower through the ozone booster fan and the ozo...

Embodiment 2

[0051] Take 10 L of extraction waste liquid. Concentrate in a decompression concentration device, the vacuum degree is -0.086MPa, concentrate to 1.0 liters, cool for 3 hours, at this time, the room temperature is 20 ° C, centrifuge and concentrate the solid-liquid mixture for 25 minutes to obtain 3500 grams of wet crystals with a water content of 9%. Then put it in a boiling furnace and burn it for 220 minutes at a temperature of 750°C. The generated gas is introduced into the treatment tower at about 700°C, and a spray device is installed on the upper part of the treatment tower, and the mixture made of calcium carbide slag and water (the weight ratio of the two is 1:9, pH10) is sprayed from the spray device from the top And the lower jet is in contact with the high-temperature flue gas for full absorption. When the flue gas temperature drops to about 160°C, the ozone (10wt%) produced by the ozone generator enters the treatment tower through the ozone booster fan and the ozo...

Embodiment 3

[0054] Take 10 L of extraction waste liquid. Concentrate in a vacuum concentrator, the vacuum degree is -0.086MPa, concentrate to 1.0 liters, and cool for 3 hours. At this time, the room temperature is 21 ° C, and the solid-liquid mixture is concentrated by centrifugation for 22 minutes to obtain 3800 grams of wet crystals with a water content of 10%. Then put it in a boiling furnace and burn it for 200 minutes at a temperature of 760°C. The generated gas is introduced into the treatment tower at about 700°C, and a spray device is installed on the upper part of the treatment tower, and the mixture made of calcium carbide slag and water (the weight ratio of the two is 1:9, pH10) is sprayed from the spray device from the top And the lower jet is in contact with the high-temperature flue gas for full absorption. When the flue gas temperature drops to about 160°C, the ozone (10wt%) produced by the ozone generator enters the treatment tower through the ozone booster fan and the oz...

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Abstract

The invention discloses a comprehensive treatment method of enzyme preparation industrial wastewater. The method comprises the following steps that under the pressure reduction condition, the enzyme preparation industrial wastewater containing sodium sulfate is concentrated to be 8 to 15 percent of the original volume; then, a liquid phase and a solid phase with the water content being 10 weight percent or lower are obtained through centrifugal separation; the liquid phase is used for cyclic concentration; the solid phase is fired for 3 to 4h at 700 to 760 DEG C; smoke gas generated during thefiring contacts alkaline slurry under the condition of keeping the temperature to be 690 to 750 DEG C; when the temperature is lowered to 150 to 200 DEG C, the smoke gas further contacts ozone; the fired solid is cooled to the room temperature to obtain white powder; the white powder is further used as an enzyme sinking agent.

Description

technical field [0001] The invention belongs to the field of industrial wastewater treatment, and in particular relates to a comprehensive treatment method for enzyme preparation industrial wastewater. Background technique [0002] At present, domestic enzyme preparation factories still widely use ammonium sulfate, sodium sulfate or sodium chloride salting-out process to produce industrial glucoamylase, amylase, etc., resulting in a large amount of salt-containing wastewater. For the treatment of these salty wastewaters, at present, simple evaporation and concentration are generally used to recover black and sticky salt solids from the wastewater. Due to the high impurity content of the salt solids, they can no longer be used for salting out, but as Raw materials for the preparation of fertilizers, and even solid waste in the production process. [0003] The wastewater from the enzyme preparation industry mainly contains proteins, sugars and other impurities. The traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C01D5/16
CPCC01D5/16C02F1/025C02F1/20C02F1/38
Inventor 赵建刚王娜浦军平
Owner 山西恩泽生物技术有限公司