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Environmentally-friendly technology for treating xanthan gum fermentation wastewater

A technology for fermenting wastewater and xanthan gum, which is applied in the direction of filtration treatment, precipitation treatment, special treatment goals, etc., can solve the problems of difficult cultivation operation process, inability to completely degrade ammonia nitrogen, and reduce sludge production, so as to achieve simple process and avoid excessive Proliferation and volume reduction effects

Active Publication Date: 2019-08-06
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

[0004] The applicant has conducted long-term research on the treatment of xanthan gum fermentation wastewater. Chinese patent technology "CN104313004A, a preparation for treating xanthan gum production sewage" discloses a preparation for treating xanthan gum production sewage, which is a carrier and The composite microbial agent is prepared by mixing according to the weight ratio of 2:1. The carrier is chitosan. There are many bacterial strains contained in this preparation, the cultivation operation process is relatively difficult, and it cannot be reused.
The Chinese patented technology "CN106882909A, Environmental Protection Technology for Treatment of Xanthan Gum Fermentation Wastewater" also uses a biological agent, which is prepared by mixing four kinds of bacteria and a carrier, and the carrier is made of zeolite, kaolinite, starch, chitosan It is sintered from other raw materials, has good adhesion, can be suspended in water, reduces the sludge output, and can be reused by calcination, but the biological preparation cannot completely degrade ammonia nitrogen, and the water still contains a large amount of nitro nitrogen and nitroso nitrogen.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0032] The biological preparation for the treatment of xanthan gum fermentation process wastewater is prepared according to the following process:

[0033] The kaolin and bentonite were mixed in a mass ratio of 2:1, and then added to a ball mill equipped with a ball milling medium (5mm silicon carbide balls, mass ratio of material to balls 1:5) for ball milling for 30 minutes, dried at 80 ° C for 15 minutes, and then passed for 100 minutes. Mesh sieve, collect the undersize;

[0034] Mix polyvinyl alcohol, attapulgite, urea, water and undersize in a mass ratio of 3:5:7:70:100, then put into a granulator for granulation to obtain wet granules with a diameter of 1 mm , and then dried at 80°C for 30min, then placed in a resistance furnace for calcination at 1000°C for 30min, and after natural cooling, ceramsite was obtained;

[0035] Mix bacterial agent A and ceramsite according to the ratio of 1L: 2kg, and culture at 30°C for 6h.

[0036]Then add bacterial agent B and 40g / L so...

Embodiment 2

[0041] The biological preparation for the treatment of xanthan gum fermentation process wastewater is prepared according to the following process:

[0042] The kaolin and bentonite were mixed in a mass ratio of 2:1, and then added to a ball mill equipped with a ball milling medium (5mm silicon carbide balls, mass ratio of material to balls 1:5) for ball milling for 30 minutes, dried at 80 ° C for 15 minutes, and then passed for 100 minutes. Mesh sieve, collect the undersize;

[0043] Mix the polyvinyl alcohol, attapulgite, urea, water and undersize in a mass ratio of 3:5:7:70:100, and then put it into a granulator for granulation to obtain wet granules with a diameter of 2 mm. , and then dried at 80°C for 30min, then placed in a resistance furnace for calcination at 1000°C for 40min, and after natural cooling, ceramsite was obtained;

[0044] Mix bacterial agent A and ceramsite according to the ratio of 1L: 2kg, and culture at 30°C for 6h.

[0045] Then add bacterial agent B...

Embodiment 3

[0051] The index detection of the ceramsite of the present invention.

[0052] Porosity: use the boiling method of GB / T1966-1996 to determine the porosity of the sample;

[0053] Mechanical strength: measured by GBT1965 / 1996 test method for flexural strength of porous ceramics.

[0054] The specific indicators are shown in Table 1:

[0055] Table 1

[0056] group Porosity % Mechanical strength Mpa Density g / ml Example 1 72.8 14.6 1.04 Example 2 70.6 15.3 1.08

[0057] It can be seen that the porosity of the ceramsite carrier of the present invention reaches more than 70%, the pore diameter is between 0.1-10 microns, it is easy to process, the strength is high, the porosity is high, the density is close to that of water, it is in a suspended state, and the dispersibility in waste water is good. , which is conducive to the rapid adsorption and treatment of pollutants.

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Abstract

The invention belongs to the technical field of environmental protection, and discloses an environmentally-friendly technology for treating xanthan gum fermentation wastewater. Biological preparationsare used in the invention, and include Paracoccus denitrificans, Clostridium perfringens and Halomonas elogata. The technology is simple to operate, and can thoroughly degrade pollutants such as ammonia nitrogen quickly and efficiently.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an environmental protection process for treating xanthan gum fermentation wastewater. Background technique [0002] Water is the most precious wealth on earth and an indispensable substance for the survival and development of human beings and all living things. At present, the fresh water resources available for people to use are most of the surface water in the underground aquifers below 800m, accounting for only 2.6%. a very small part of the total water volume. The world water crisis has seriously threatened human survival. More than one fifth of the world's people will face moderate to high water shortages. This pressure is sending a water shortage warning to the world. The total amount of water resources in my country ranks fourth in the world, but the per capita water volume is only a quarter of the world's water volume, which is one of the countr...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/34C02F3/30C02F101/16
CPCC02F3/34C02F3/302C02F9/00C02F2003/001C02F1/001C02F2001/007C02F1/66C02F1/50C02F2101/16C02F2303/04
Inventor 王文强杜鹏梁晓娟周敬许传娟郄子玥
Owner 内蒙古阜丰生物科技有限公司
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