Environment-friendly process for treating glutamic acid fermentation wastewater

A technology for fermentation wastewater and glutamic acid, which is applied in multi-stage water treatment, food industry wastewater treatment, biological water/sewage treatment, etc., to achieve the effect of improving treated water quality, ensuring stable operation and good degradation effect

Active Publication Date: 2015-01-07
内蒙古阜丰生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is no mature complete set of technology applied to production practice at home and abroad.
The main problem is that the one-time investment is too large, or the daily operation cost is too high, which cannot be afforded by most monosodium glutamate factories, and they have to maintain the status quo of excessive emissions for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An environmental protection process for treating glutamic acid fermentation waste water is characterized in that it comprises the steps:

[0036] (1) The glutamic acid fermentation broth is separated from the cell protein by a high-speed disc separator, and the speed of the high-speed disc separator is 4000-5000r / min to collect the sterilization liquid and precipitate the cell protein;

[0037] (2) Add appropriate amount of warm water to the bacterial protein prepared in step (1) and mix thoroughly, adjust the solid content to 15%, put it into the fermentation device, adjust the pH to 6.0-7.0 with lime milk, add 1 / 10 (V / V, the volume is After adding water and mixing thoroughly, the 1 / 10) compound seed liquid of bacterial protein aqueous solution is stirred evenly, and the temperature is controlled at 32-34°C. During the cultivation process, intermittent ventilation and slow stirring are cultivated for 24 hours to obtain mature fermented liquid probiotics;

[0038] The c...

Embodiment 2

[0055] Embodiment 2: the effect test of the probiotic agent prepared in embodiment 1:

[0056] The pigs used in the experiment were Duroc;

[0057] The control group drank tap water; the test group drank 1% probiotic aqueous solution (weight ratio), with an average initial weight of 24.2kg,

[0058] The experimental group and the control group used 20 pigs each, divided into random groups, and raised them under the same conditions for 98 days. The growth conditions are shown in Table 1:

[0059] Table 1: Comparison of weight gain in pigs with probiotics

[0060] group Number of cases initial weight 33d weight 66d weight 98d weight weight gain% control group 20 24.2 48.3 71.3 93.5 / test group 20 24.2 52.5 80.7 103.3 10．5

[0061] The data in Table 1 show that the growth ability of the pigs in the experimental group is significantly higher than that in the control group. During the breeding period, the occurrence of diarrhea, co...

Embodiment 3

[0063] Embodiment 3 Treatment example of waste water effect

[0064] Take Fufeng production workshop, extract waste water from glutamic acid, enter the sewage treatment system according to the sewage supernatant produced by the method of embodiment 1, use 50L water bucket as test equipment and bring stirring, take 30L respectively, add in two buckets, adjust pH 7.0, water temperature 20 ℃, sampling measurement COD, ammonia nitrogen, total nitrogen data; control group does not add composite bacterial agent, experimental group adds compound bacterial agent in embodiment 1, adds microbial preparation 20 grams every time by every cubic meter, every day Dosing once, after a week of continuous dosing, sampling and measuring COD, ammonia nitrogen, and total nitrogen data, the treated wastewater fully meets the discharge standard, and the specific results are shown in Table 2:

[0065] Table 2

[0066] COD average removal rate Ammonia nitr...

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Abstract

The invention relates to an environment-friendly process for treating glutamic acid fermentation wastewater. Glutamic acid fermentation broth is subjected to mycoprotein separation by a high-speed disc separator, a degerming liquid is collected, mycoprotein is precipitated, a composite seed solution is added to the mycoprotein for fermentation to prepare a probiotic preparation, wastewater generated by extracting glutamic acid by the degerming liquid enters a sewage treatment system, a compound microbial agent is added for deep treatment, and then the wastewater is drained up to the standard. The environment-friendly process for treating glutamic acid fermentation wastewater is economical and environment-friendly, and has broad application prospect.

Description

technical field [0001] The invention relates to the field of glutamic acid extraction technology in the biological fermentation industry, and specifically provides an environmentally friendly technology for treating glutamic acid fermentation wastewater. Background technique [0002] With the rapid development of the economy and the continuous improvement of technology, my country has become a major producer and consumer of monosodium glutamate, but the amount of wastewater discharged during the production of monosodium glutamate is large, and the mother liquor discharged from the monosodium glutamate fermentation broth after isoelectric extraction of glutamic acid has CODCr High, high BOD5, high bacterial content, high sulfate radical (chloride ion before pH adjustment with sulfuric acid) high content, high ammonia nitrogen content and low pH value (1.5-3.2) "five high and one low" characteristics, is a kind of Industrial wastewater that is very difficult to treat. Due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14A23K1/00
CPCC02F1/52C02F3/341C02F9/00C02F2101/16C02F2103/32C02F2301/08
Inventor 张传森王均成宋海波卢松李晓永张春宇王言伟
Owner 内蒙古阜丰生物科技有限公司
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