Method for treating wastewater generated by gas generator

A technology for a gas generator and a treatment method, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. High energy consumption and other problems, to achieve the effect of low processing cost, reduced environmental protection pressure, and low energy consumption

Inactive Publication Date: 2015-07-08
临沂市顺弘陶瓷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to overcome the technical deficiencies of large energy consumption, high treatment cost and low removal rate of harmful substances in the existing process of treating coal gasifier wastewater, the purpose of the present invention is to provide a method for treating phenolic substances with high efficiency and low energy consumption. A method for treating waste water produced by a low-cost coal gasifier. Compared with the prior art, this treatment method has a high removal rate for phenolic substances, does not require high energy consumption in the treatment process, and the treatment method is simple and easy, and has good industrial application Value

Method used

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  • Method for treating wastewater generated by gas generator

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1 Influence of the wastewater treatment method of the present invention on the removal rate of phenols and the removal rate of COD

[0029] Take the wastewater produced by a gas generator in a ceramic industry for treatment, and compare the effects of the two processes on dephenolization and COD:

[0030] Process (1): use an adsorbent with a weight ratio of bentonite and activated carbon of 1:0.5 + ultrasonic treatment;

[0031] Process (2): using an adsorbent with a weight ratio of bentonite and activated carbon of 1:0.8 + ultrasonic treatment;

[0032] Process (3): using an adsorbent with a weight ratio of bentonite and activated carbon of 1:1 + ultrasonic treatment;

[0033] Process (4): using an adsorbent with a weight ratio of bentonite and activated carbon of 1:0.8

[0034] Table 1 Effects of different treatment processes on phenols removal rate and COD removal rate

[0035]

Phenolic content

COD

Phenol clearance

COD clearance ra...

Embodiment 2

[0042] Example 2 The treatment method of waste water produced by the gas generator of the present invention

[0043] The waste water produced by the gas generator discharged from a certain ceramic factory is a treatment object, and its phenolic substance content is 750mg / L, and the COD content is 1350mg / L; Adopt the following treatment process to process the described waste water, which comprises the steps:

[0044] (1) collect the phenol-containing waste water that gas generator produces, use screen mesh to filter and remove suspended solids, tar and insoluble impurities in the waste water, wherein the aperture of the mesh screen is 2mm;

[0045] (2) add adsorbent according to the weight volume ratio of 2% in the effluent in step (1), after stirring, stand still for 2-5 hours, use ultrasonic generator to carry out ultrasonic treatment to waste water, and filter twice after static for 1.5 hours; Described adsorbent is made up of bentonite and activated carbon, wherein in descr...

Embodiment 3

[0049] Example 3 The treatment method of waste water produced by the gas generator of the present invention

[0050] The waste water produced by the gas generator discharged from a certain ceramic factory is a treatment object, and its phenolic substance content is 790mg / L, and the COD content is 1380mg / L; Adopt the following treatment process to process the described waste water, and it may further comprise the steps:

[0051] (1) collect the phenol-containing waste water that gas generator produces, use screen mesh to filter and remove suspended solids, tar and insoluble impurities in the waste water, wherein the aperture of the mesh screen is 2mm;

[0052] (2) add adsorbent according to the weight volume ratio of 3.5% in the effluent in step (1), after stirring, stand still for 2-5 hours, use ultrasonic generator to carry out ultrasonic treatment to waste water, and filter twice after static for 2 hours; Described adsorbent is made up of bentonite and activated carbon, wher...

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Abstract

The invention relates to a wastewater treatment method and particularly relates to a method for treating wastewater generated by a gas generator. In order to overcome defects of high energy consumption, high treatment cost and low harmful substance removing rate existing in the process of treating wastewater generated by the gas generator in the prior art, the invention provides a method for treating wastewater generated by a gas generator, which is high in efficiency for treating phenolic substances and low in energy consumption. Treating modes such as ultrasonic treatment, metal ion sedimentation as well as biodegradation and oxidation are comprehensively adopted by the method. Compared with the prior art, the treatment method is high in removal rate for phenolic substances, free of high energy consumption in the treatment process, simple and feasible in treatment and high in industrial application value.

Description

technical field [0001] The invention relates to a method for treating wastewater, in particular to a method for treating wastewater generated by a gas generator. Background technique [0002] The phenolic water produced by the gas generator is a liquid that has a serious impact on the environment. With the stricter and stricter requirements for environmental protection, the treatment of phenolic water has gradually increased. The treatment of phenol-containing wastewater has always been a major problem in the field of sewage treatment at home and abroad. At present, the treatment of phenolic water mainly relies on evaporation treatment. The phenolic water is heated and evaporated to utilize the phenolic water vapor, and the phenolic water is used as the catalyst of the gas generator. [0003] Phenol-containing sewage is composed of phenols, sulfides, cyanides, etc. Among them, phenols are mainly monohydric phenol, with the highest content of phenol, followed by m-p-cresol, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 张玉静张丙顺
Owner 临沂市顺弘陶瓷科技有限公司
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