Method for treating sewage in synthesis ammonia in coal chemical industry

A technology for synthesizing ammonia and coal chemical industry, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of unreasonable compatibility of bacterial agents, unacceptable enterprises and poor treatment effect. , to achieve 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 methods for treating sewage in the prior art 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

[0037] A method for treating sewage in coal chemical synthesis of ammonia, comprising the steps of:

[0038] Step 1) preparation of microbial preparation, step 2) precipitation and oil separation, step 3) adjustment of pH, step 4) preparation of carbon source, step 5) microbial oxidation, and step 6) preparation of feed protein;

[0039] Specifically, include the following steps:

[0040] Step 1) Preparation of microbial preparations: 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 1:1:2:3:3, then mixed with the carrier according to the mass ratio of 1:1 and stirred evenly, and finally dried at low temperature at 30°C. The water content is 10%; that is, the carrier is prepared by mixing diatomite and chitosan according to the mass ratio of 1:1;

[0041] Step 2) Sedimentation and oil separation: Cool the sewage to 2...

Embodiment 2

[0047]A method for treating sewage in coal chemical synthesis of ammonia, comprising the steps of:

[0048] Step 1) preparation of microbial preparation, step 2) precipitation and oil separation, step 3) adjustment of pH, step 4) preparation of carbon source, step 5) microbial oxidation, and step 6) preparation of feed protein;

[0049] Specifically, include the following steps:

[0050] Step 1) Preparation of microbial preparations: 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 1:1:2:3:3, then mixed with the carrier according to the mass ratio of 1:1 and stirred evenly, and finally dried at low temperature at 30°C. The water content is 10%; that is, the carrier is prepared by mixing diatomite and chitosan according to the mass ratio of 1:1;

[0051] The Bacillus licheniformis is CCTCC NO.M206082 (CN101037659A); ...

Embodiment 3

[0062] 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:

[0063] Table 1

[0064] Before treatment (mg / L) After treatment (mg / L) Removal rate (%) COD 1059.3 19.1 98.2％ NH3-N 325.7 6.9 97.9％ Sulfide 56.2 2.6 95.4%

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PUM

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Abstract

The invention belongs to the environment-friendly field of sewage treatment and discloses a method for treating sewage in synthesis ammonia in coal chemical industry. The method comprises the following steps: 1) preparing a microbial preparation; 2) precipitating and separating oil; 3) adjusting the pH value; 4) preparing a carbon source; 5) oxidizing microorganisms; and 6) preparing feed proteins. The method disclosed by the invention can be used for effectively removing pollutants in sewage in coal chemical industry, is low in investment cost and can be popularized and used on a large scale.

Description

technical field [0001] The invention belongs to the field of sewage treatment and environmental protection, and in particular relates to a method for treating sewage in coal chemical synthesis ammonia. 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 wastewat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14A23K1/16
Inventor 严纪文赵凤良孙钦波周家园薛恒俊董力青
Owner HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
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