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Environment-friendly technique for restoring L-threonine fermentation wastewater

A technology for fermenting wastewater and threonine, which is applied in water pollutants, water/sewage treatment, biological water/sewage treatment, etc. It can solve the problems of high density of natural non-metallic minerals, high daily operating costs, and difficult separation of solid and liquid , to achieve the effect of reducing sludge production, reducing time and improving adsorption effect

Active Publication Date: 2016-09-21
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, most manufacturers cannot bear it, and have to maintain the status quo of excessive emissions for a long time
Activated carbon is widely used as an important adsorbent material because of its rich pore structure and huge specific surface area, good chemical stability and strong adsorption capacity, but its cost is high
There are also non-metallic ionic minerals such as attapulgite for adsorption, but natural non-metallic minerals have the following limitations as adsorbents: natural non-metallic minerals have high density and limited specific surface area, and the surface of natural non-metallic minerals is mostly negatively charged. And directly using natural non-metallic powder ore such as clay minerals as the adsorbent will have the problem of difficult separation of solid and liquid after adsorption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An environmentally friendly process for repairing L-threonine fermentation wastewater,

[0038] (1) Threonine waste water enters the grit chamber after passing through the grid, and the sewage separated from sand and water enters the primary sedimentation tank and passes through the primary sedimentation tank. Facilitates the buoyancy of oil in wastewater , to reduce the content of suspended solids;

[0039] (2) Preparation of physical adsorbent

[0040]Mix according to the mass ratio of forsterite powder, shell powder, kaolin, and pore-forming agent in a mass ratio of 3:2:3:5, stir evenly, place in a granulator, and add 22-25% (weight) of water to the mixture , granulated to obtain a particle size of 3 ~ 5mm spherical Green body; drying at 95°C for 20 hours, and calcining at 1050°C for 1 hour to obtain a physical adsorbent.

[0041] (3) The wastewater treated by the primary sedimentation tank enters the aeration tank, and the physical adsorbent is added to the sewa...

Embodiment 2

[0058] An environmentally friendly process for repairing L-threonine fermentation wastewater,

[0059] (1) Threonine waste water enters the grit chamber after passing through the grid, and the sewage separated from sand and water enters the primary sedimentation tank and passes through the primary sedimentation tank. Facilitates the buoyancy of oil in wastewater , to reduce the content of suspended solids;

[0060] (2) Preparation of physical adsorbent

[0061] Mix according to the mass ratio of forsterite powder, shell powder, kaolin, and pore-forming agent in a mass ratio of 3:2:3:5, stir evenly, place in a granulator, and add 22-25% (weight) of water to the mixture , granulated to obtain a particle size of 3 ~ 5mm spherical Green body; drying at 95°C for 20 hours, and calcining at 1050°C for 1 hour to obtain a physical adsorbent.

[0062] (3) The wastewater treated by the primary sedimentation tank enters the aeration tank, and the physical adsorbent is added to the sew...

Embodiment 3

[0078] Embodiment 3 Treatment example of waste water effect

[0079] Take Fufeng production workshop, threonine fermentation waste water, enter the sewage treatment system according to the method of embodiment 1-2 respectively, and take samples to measure COD, ammonia nitrogen, total nitrogen data;

[0080] Compared with Example 1, control group 1 does not add physical adsorbent; compared with Example 1, control group 2 does not add composite bacterial agent. Sampling and determination of COD, ammonia nitrogen, SS, effluent phosphorus content and clarity test data are shown in Table 1:

[0081] Table 1

[0082] COD removal rate Ammonia nitrogen removal rate Phosphorus removal rate Phosphorus content in effluent Clarity control group 1 47.7% 43.5% 51.7% >0.5mg / L 11cm control group 2 46.5% 60.7% 62.3% >0.5mg / L 10cm Example 1 group 99.8% 99.4% 99.7% 27cm Example 2 group 99.7% 99.5% 99.3% 28cm

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PUM

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Abstract

The invention relates to an environment-friendly technique for restoring L-threonine fermentation wastewater. The method uses the combination of a physical method and a biological agent treatment method to perform treatment. The biological agent comprises the following raw materials in parts by volume: 6-7 parts of Arthrobacter, 5-7 parts of pseudomonad, 5-7 parts of Rhodococcus, 4-5 parts of Bacillus amyloliquefaciens, 4-5 parts of Clostridium and 3-4 parts of Scenedesmus obliquus. The biological agent contains multiple microbes with favorable degradability for nondegradable pollutants; the reasonable combination of the strains has favorable degradation effects; and thus, the biological agent has wide application prospects.

Description

technical field [0001] The invention relates to the field of clean production of threonine in the biological fermentation industry, and specifically provides an environmentally friendly process for repairing L-threonine fermentation wastewater. Background technique [0002] Threonine (Threonine, abbreviated as Thr), scientific name 2-amino-3-hydroxybutyric acid, belongs to aliphatic amino acid, slightly sweet, named for its structure similar to threose, is a kind of human, animal and plant protein Essential amino acids are mainly used in medicine, chemical reagents, and nutritional enhancers. They can strengthen dairy products, restore human fatigue, and promote growth and development. In recent years, with the development of the economy, the market demand for threonine has continued to grow steadily, and it is one of the amino acid varieties with the fastest growing demand. Especially, the use in chemistry and biochemistry, food additives, feed additives, etc. has grown rap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/38C02F101/34
CPCC02F1/001C02F1/288C02F1/52C02F3/34C02F9/00C02F2101/34C02F2101/38
Inventor 王均成丁兆堂曹光华聂建伟王文强高雷
Owner 内蒙古阜丰生物科技有限公司
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