Environmental protection process for processing coal chemical industrial wastewater

A technology for coal chemical industry and sewage, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, food processing, etc. The effect of improving biological treatment efficiency, easy acceptance, and reducing operating costs

Active Publication Date: 2015-04-08
HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, methanol and white sugar (or industrial glucose) have been used in the dosing of carbon sources for biochemical sewage treatment, and methanol is a hazardous chemical, which not only poses a great danger in the process of use; the cost of white sugar is high, and it is generally difficult for enterprises to accept
[0004] Most of the existing biological methods for treating coal chemical wastewater have the following disadvantages: unreasonable compatibility of bacteria agents, poor treatment effect, and high cost, which are difficult for enterprises to accept

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An environmental protection process for treating coal chemical sewage, which comprises the following steps:

[0037] Step 1) Preparation of microbial preparations: Enterococcus faecalis, Bacillus licheniformis, Acinetobacter baumannii, Rhodococcus, Sphingomonas and Pseudomonas fluorescens were cultured to a concentration of 1×10 8 Bacteria solution per ml, mixed according to the volume ratio of 1:1:1:2:3:3, then mixed with the carrier according to the mass ratio of 1:1 and stirred evenly, and finally dried at low temperature, the drying temperature was 30°C, and dried The final water content is 10%; that is, the carrier is prepared by mixing diatomaceous earth and chitosan according to the mass ratio of 1:1;

[0038] Step 2) Sedimentation and oil separation: Cool the sewage to 20°C, then enter the sedimentation tank for 12 hours, and finally enter the grease separation tank to remove petroleum substances;

[0039] Step 3) Adjust the pH: the sewage enters the acid-base ...

Embodiment 2

[0044] An environmental protection process for treating coal chemical sewage, which comprises the following steps:

[0045] Step 1) Preparation of microbial preparations: Enterococcus faecalis, Bacillus licheniformis, Acinetobacter baumannii, Rhodococcus, Sphingomonas and Pseudomonas fluorescens were cultured to a concentration of 1×10 8Bacteria solution per ml, mixed according to the volume ratio of 1:1:1:2:3:3, then mixed with the carrier according to the mass ratio of 1:1 and stirred evenly, and finally dried at low temperature, the drying temperature was 30°C, and dried The final water content is 10%; that is, the carrier is prepared by mixing diatomaceous earth and chitosan according to the mass ratio of 1:1;

[0046] The Enterococcus faecalis is ATCC 29212 (In Vivo. 2009 Jan-Feb;23(1):81-7.);

[0047] The Bacillus licheniformis is CCTCC NO.M206082 (CN101037659A);

[0048] The Acinetobacter baumanii (Acinetobacter baumanii) is ATCC 19606 (Infect Immun. 2012 Mar;80(3):10...

Embodiment 3

[0058] Taking the coal chemical industry sewage of our company as an example, the sewage treatment effect of Example 2 was tested, and all indicators reached the ideal discharge standard. The detection indicators of sewage are shown in Table 1:

[0059] Table 1

[0060] Before treatment (mg / L) After treatment (mg / L) Removal rate (%) COD 1172.3 12.7 98.9 NH3-N 303.9 6.2 98.0 Sulfide 53.6 2.5 95.3 Anilines 43.1 1.8 95.6

[0061] Conclusion: The process of the present invention can effectively remove ammonia nitrogen, sulfide and aniline substances in coal chemical industry sewage, and fully meet the emission standards.

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Abstract

The invention belongs to the field of environmental protection of wastewater treatment, and discloses an environmental protection process for processing coal chemical industrial wastewater. According to the process, a microbial preparation is utilized, and comprises enterococcus faecalis, bacillus licheniformis, baumanii, rhodococcus, sphingomonas sp and pseudomonas fluorescens. According to the process disclosed by the invention, various pollutants in the coal chemical industrial wastewater can be effectively removed; and the environmental protection process accords with the emission standard.

Description

technical field [0001] The invention belongs to the field of sewage treatment and environmental protection, and in particular relates to an environmental protection process for treating coal chemical sewage. Background technique [0002] At present, due to the low cost of coal raw materials, using coal as raw material to synthesize liquid ammonia is the choice of most chemical companies. However, for ammonia production enterprises using coal as raw material, raw coal will discharge a large amount of waste water in the process of gas production, desulfurization, decarbonization, refining, and ammonia synthesis. Because coal contains elements such as carbon, hydrogen, oxygen, nitrogen, and sulfur, which are transformed into various organic and inorganic compounds of oxygen, nitrogen, and sulfur during the dry distillation process, the moisture in the gas and the condensate of the steam contain a variety of toxic Harmful pollutants are one of the most difficult industrial wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14A23K1/00A23K1/14
CPCY02P60/87
Inventor 严纪文赵凤良孙钦波郭永波董力青
Owner HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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