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Process method for treating coal chemical industry wastewater

A technology of coal chemical wastewater and process method, applied in water/sewage treatment, aerobic process treatment, natural water body treatment, etc., can solve the problems of multiple resources, unfavorable energy saving, and increase of wastewater treatment cost, so as to improve treatment efficiency, Excellent extraction effect and improved biodegradability

Inactive Publication Date: 2020-12-11
董燕飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The third is the refining process of coal tar, that is, using the air during heating to turn coal into gas, tar or other chemical substances. COD value, the composition is more complex
In the technical solution of this invention, the ozone-activated carbon process is used for the advanced treatment, but the power consumption of the ozone generator is relatively large, and it needs to consume more resources, which is not conducive to saving energy, and at the same time increases the cost of wastewater treatment. The purity will also be limited by the equipment itself, which will further affect the effect of wastewater treatment

Method used

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  • Process method for treating coal chemical industry wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A process for the treatment of coal chemical wastewater, specifically comprising the following steps:

[0022] S1: Use an extractant to extract phenol / ammonia / benzene substances from coal chemical industry wastewater. The preparation of the extractant includes the following steps: 30 parts of N503 extractant, 60 parts of kerosene, 20 parts of tributyl phosphate, 10 parts Parts of dioctyl sebacate and 30 parts of dimethyl carbonate.

[0023] S2: The waste water treated in step S1 is subjected to hydrolysis and acidification treatment, and the pH value of the waste water is adjusted to 7.

[0024] S3: Transport the waste water treated in step S2 to the oil-water separation device for oil removal treatment.

[0025] S4: performing adsorption treatment on the waste water after degreasing and separation in step S3. The adsorption treatment uses adsorption materials to perform adsorption treatment on the wastewater. The preparation of the adsorption materials includes:

[0...

Embodiment 2

[0030] A process for the treatment of coal chemical wastewater, specifically comprising the following steps:

[0031] S1: Use an extractant to extract phenol / ammonia / benzene substances from coal chemical industry wastewater. The preparation of the extractant includes the following steps: 40 parts of N503 extractant, 70 parts of kerosene, 30 parts of tributyl phosphate, 15 parts Parts of dioctyl sebacate and 45 parts of dimethyl carbonate.

[0032] S2: The waste water treated in step S1 is subjected to hydrolysis and acidification treatment, and the pH value of the waste water is adjusted to 8.

[0033] S3: Transport the waste water treated in step S2 to the oil-water separation device for oil removal treatment.

[0034] S4: performing adsorption treatment on the waste water after degreasing and separation in step S3. The adsorption treatment uses adsorption materials to perform adsorption treatment on the wastewater. The preparation of the adsorption materials includes:

[0...

Embodiment 3

[0039] A process for the treatment of coal chemical wastewater, specifically comprising the following steps:

[0040] S1: Use an extractant to extract phenol / ammonia / benzene substances from coal chemical industry wastewater. The preparation of the extractant includes the following steps: 36 parts of N503 extractant, 60 parts of kerosene, 24 parts of tributyl phosphate, 12 parts Parts of dioctyl sebacate and 45 parts of dimethyl carbonate.

[0041] S2: The waste water treated in step S1 is subjected to hydrolysis and acidification treatment, and the pH value of the waste water is adjusted to 7.4.

[0042] S3: Transport the waste water treated in step S2 to the oil-water separation device for oil removal treatment.

[0043] S4: performing adsorption treatment on the waste water after degreasing and separation in step S3. The adsorption treatment uses adsorption materials to perform adsorption treatment on the wastewater. The preparation of the adsorption materials includes:

...

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Abstract

The invention discloses a process method for treating coal chemical industry wastewater. The method comprises the steps: extraction treatment of benzene / phenol / ammonia substances in the wastewater, hydrolytic acidification treatment, oil removal treatment, adsorption treatment, deep biochemical treatment and filtration. By adopting the wastewater treatment method disclosed by the invention, afterthe coal chemical industry wastewater is subjected to benzene / phenol / ammonia substance extraction treatment, macromolecular refractory organic matters in the wastewater are adsorbed and removed through adsorption treatment, so that the biodegradability of the wastewater is further improved, then biochemical substances in the wastewater are further removed through deep biochemical treatment, and thus the treatment efficiency of deep treatment is greatly improved. According to the method, no chemical needs to be added into the wastewater, so that the problem that the quality of effluent is influenced due to the addition of the chemical is avoided, and the method is an efficient and safe coal chemical industry wastewater treatment process.

Description

technical field [0001] The invention belongs to the technical field of industrial waste water treatment, and in particular relates to a process method for the treatment of coal chemical waste water. Background technique [0002] Coal chemical enterprises mainly use coal as raw material to produce and process related chemical products. During this chemical process, wastewater will be generated, and wastewater is mainly produced from three processes. One is the preparation process of water gas. In this process, coal reacts with oxygen and steam to form water gas, and at the same time, waste water composed of ammonia nitrogen, sulfide and cyanide is produced. The second is the process of coal liquefaction, that is, the process in which coal is converted into various oils through thermal cracking, and the residual coal liquefaction waste water contains more sulfur, phenol and other substances, and the COD value is higher. Therefore, it contains less salt, and most of it is comp...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/34C02F101/30C02F101/34C02F101/16C02F101/18
CPCC02F1/001C02F1/26C02F1/281C02F1/283C02F1/286C02F1/40C02F1/66C02F3/02C02F9/00C02F2101/16C02F2101/18C02F2101/30C02F2101/345C02F2103/34C02F2209/08C02F2209/14
Inventor 董燕飞
Owner 董燕飞
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