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Method for treating coal chemical wastewater

A technology for coal chemical wastewater and treatment methods, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of large ozone power consumption, affecting water quality and high cost , to achieve the effect of improving treatment efficiency, improving biodegradability, and good adsorption performance

Inactive Publication Date: 2011-10-12
BEIJING GUODIAN FUTONG SCI & TECH DEV +1
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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that the coal chemical industry wastewater treatment method in the prior art uses ozone for advanced treatment, which has the problems of large power consumption, high cost, and influence on the quality of the effluent, thus proposing a method that does not use Coal chemical wastewater treatment method that uses ozone, saves resources, and can well guarantee the quality of effluent

Method used

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  • Method for treating coal chemical wastewater
  • Method for treating coal chemical wastewater
  • Method for treating coal chemical wastewater

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Embodiment approach

[0032] Such as figure 1 A specific embodiment of the coal chemical industry wastewater treatment method of the present invention is shown, comprising the steps:

[0033] ① Pretreatment: The coal chemical wastewater in the regulating pool is passed into the pretreatment unit for pretreatment. The regulating pond is used to adjust the homogeneity and quantity of the coal chemical wastewater. Precipitation, hydrolysis and acidification to improve the biodegradability of wastewater;

[0034] ② Biochemical treatment of the first biochemical unit: pass the pretreated wastewater into the first biochemical unit for biochemical treatment, and degrade organic matter and ammonia nitrogen in the first biochemical unit to reduce the content of nitrogen elements;

[0035] ③ Adsorption unit adsorption treatment: the above-mentioned biochemically treated wastewater is passed into the adsorption unit for adsorption treatment. The adsorption unit is equipped with an adsorption material to perf...

Embodiment 2

[0039] figure 2 Another embodiment of the coal chemical industry wastewater treatment method described in the present invention is provided, comprising the steps of:

[0040] ① Pretreatment: The coal chemical wastewater in the regulating tank is passed into the pretreatment unit for pretreatment;

[0041] ② Biochemical treatment of the first biochemical unit: pass the pretreated wastewater into the first biochemical unit for biochemical treatment, and degrade organic matter and ammonia nitrogen in the first biochemical unit to reduce the content of nitrogen elements;

[0042] ③ Adsorption unit adsorption treatment: the above-mentioned biochemically treated wastewater is passed into the adsorption unit for adsorption treatment. The adsorption unit is equipped with an adsorption material to perform adsorption treatment on the wastewater. Here, the coke powder of active coke is selected, and the new The coke powder is added into the adsorption unit, and the mass ratio of the wa...

Embodiment 3

[0046] ① Pretreatment: The coal chemical wastewater in the regulating tank is passed into the pretreatment unit for pretreatment;

[0047] ② Biochemical treatment of the first biochemical unit: pass the pretreated wastewater into the first biochemical unit for biochemical treatment, and degrade organic matter and ammonia nitrogen in the first biochemical unit to reduce the content of nitrogen elements;

[0048] ③ Adsorption unit adsorption treatment: the above-mentioned biochemically treated wastewater is passed into the adsorption unit for adsorption treatment. The adsorption unit is equipped with an adsorption material to perform adsorption treatment on the wastewater. Here, the coke powder of active coke is selected, and the new The coke powder is added into the adsorption unit, and the mass ratio of the waste water in the adsorption unit to the active coke is 1000:1;

[0049] ④ Sedimentation treatment in sedimentation tank: The wastewater after the adsorption treatment is ...

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Abstract

The invention relates to a method for treating coal chemical wastewater, which comprises the following steps in turn: pretreatment, biochemical treatment with a first biochemical unit, adsorption treatment with an adsorption unit, sedimentation treatment with a sedimentation tank, and advanced biochemical treatment. The method solves the technical problems of high ozone electric power consumption, high cost and influence on yielding water quality because ozone is used for performing advanced treatment in the method for treating the coal chemical wastewater in the prior art. In the method for treating the coal chemical wastewater, the ozone is not used, resources are saved, and the yielding water quality can be well guaranteed, so the method is particularly suitable for treating the coal chemical wastewater.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a coal chemical wastewater treatment method. Background technique [0002] Coal chemical industry refers to the industry that uses coal as raw material, converts coal into gas, liquid and solid products or semi-products through chemical processing, and then further processes them into chemical and energy products. During this process, a large amount of wastewater is discharged. Coal chemical industry wastewater has complex water quality and is a typical industrial wastewater containing refractory organic compounds. For the coal chemical industry wastewater, it is difficult to meet the discharge standard by purely physical, physical chemical and chemical methods. It usually needs to go through a treatment system composed of several methods to achieve the required level of water treatment. [0003] The treatment process of coal gasification wastewater can be roughly divided into pretr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 刘振强张毅滕济林苗文华李若征曹效鑫程建龙何鹏
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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