Method for treating wastewater generated by gas generator

A technology of gasifier and treatment method, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of high removal rate of phenolic substances, low removal rate of harmful substances, Problems such as large energy consumption, to achieve the effect of reducing treatment costs, reducing environmental protection pressure, and reducing energy consumption

Inactive Publication Date: 2014-12-10
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

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  • Method for treating wastewater generated by gas generator

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Effect test

Embodiment 1

[0028] Embodiment 1 Wastewater treatment method of the present invention is to the influence of phenolic scavenging rate and COD scavenging rate

[0029] Take the waste water 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 to activated carbon of 1:0.5 + ultrasonic treatment;

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

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

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

[0034] Table 1 Effects of different treatment processes on phenolic scavenging rate and COD scavenging rate

[0035]

Phenolic content

COD

Phenol clearance

COD clearance rate...

Embodiment 2

[0042] Embodiment 2 The treatment method of the waste water produced by the coal gasifier of the present invention

[0043] Adopting the gasifier discharged by a certain ceramics factory produces waste water as treatment object, and its phenolic substance content is 750mg / L, and COD content is 1350mg / L; Adopt following treatment process to process described waste water, it comprises the following steps:

[0044] (1) Collect the phenol-containing waste water that the gasifier produces, and use a sieve to remove suspended matter, tar and insoluble impurities in the waste water, wherein the aperture of the sieve is 2mm;

[0045] (2) Add an adsorbent to the effluent in step (1) according to a weight-to-volume ratio of 2%, stand still for 2-5 hours after stirring, use an ultrasonic generator to ultrasonically treat the waste water, and filter it twice after standing still for 1.5 hours; The adsorbent is composed of bentonite and activated carbon, wherein the weight ratio of bentoni...

Embodiment 3

[0049] Embodiment 3 The treatment method of the waste water produced by the coal gasifier of the present invention

[0050] Adopting the gasifier discharged by a ceramic factory produces waste water as treatment object, and its phenolic substance content is 790mg / L, and COD content is 1380mg / L; Adopt following treatment process to process described waste water, it comprises the following steps:

[0051] (1) Collect the phenol-containing waste water that the gasifier produces, and use a sieve to remove suspended matter, tar and insoluble impurities in the waste water, wherein the aperture of the sieve is 2mm;

[0052] (2) Add adsorbent to the effluent in step (1) according to the weight-to-volume ratio of 3.5%, stand still for 2-5 hours after stirring, use an ultrasonic generator to ultrasonically treat the waste water, and filter it for the second time after standing still for 2 hours; The adsorbent is composed of bentonite and activated carbon, wherein the weight ratio of ben...

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

Claims

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Application Information

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Patent Type & Authority Applications(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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