Pre-treatment method of semi-coke wastewater

A semi-coke wastewater and pretreatment technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of harsh reaction conditions, difficult removal of organic matter, high price, etc. Achieve the effects of reducing the concentration of organic pollutants, improving the ability to remove organic matter, and easy to control reaction conditions

Inactive Publication Date: 2014-09-17
新疆维吾尔自治区环境保护科学研究院
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Problems solved by technology

[0005] However, for the processes of oil separation, extraction dephenolization and distillation deamination, its ability to remove pollutants is weak, it can only effectively remove some pollutants, and it is difficult to remove polycyclic and heterocyclic organic compounds; therefore, it cannot effectively remove Improving the biodegradability of semi-carbon wastewater
For ozone oxidation, catalytic oxidation, coagulation precipitation and its adsorption method; it requires a large amount of oxidant, adsorption material, etc., the price of these materials is relatively expensive, and the reaction conditions are relatively harsh, and a little improper control will seriously reduce the pretreatment. Effect
It can be seen that in the related art, the common pretreatment method for semi-coke wastewater has the defects of poor treatment effect and high cost.

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Embodiment 1

[0026] For the pretreatment method of blue charcoal wastewater provided by the embodiment of the present invention, please refer to figure 1 , Including the following steps:

[0027] Step 101: Add the blue charcoal wastewater to a micro-electrolysis reactor, and use Fe scraps and activated carbon particles as fillers to perform micro-electrolysis to obtain micro-electrolysis wastewater;

[0028] In step 101, in the micro-electrolysis reactor, by directly contacting Fe scraps and activated carbon together, soaking them in the conductive blue carbon wastewater solution, battery effect occurs to form countless tiny corrosive primary cells, and the metal anode is corroded At the same time, consumption and electrochemical corrosion trigger a series of synergistic effects, including flocculation, adsorption, bridging, roll sweeping, co-precipitation, electrodeposition, electrochemical reduction and other comprehensive effects, so as to achieve the degradation of organic pollutants. . In...

Embodiment 2

[0035] In this embodiment, the preparation method of the pretreatment method of blue charcoal wastewater includes the following steps:

[0036] S1: Add the blue charcoal wastewater to the micro-electrolysis reactor, and use Fe scraps and activated carbon particles as fillers to perform micro-electrolysis to obtain wastewater after micro-electrolysis;

[0037] In this step, the mass of the Fe chips and the activated carbon particles are equal, and the particle size of the Fe chips is 5-7 mm; the particle size of the activated carbon particles is 2-3 mm; the time of the micro-electrolysis It is 80-100 minutes; with the combination of the above process limitations, the micro-electrolysis effect is better.

[0038] S2: Add the wastewater after the micro-electrolysis into the Fenton reagent reactor, and add H dropwise to the Fenton reagent reactor 2 O 2 , The reaction is carried out to obtain secondary treated wastewater;

[0039] In S2, the wastewater after micro-electrolysis is added to ...

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Abstract

The invention relates to the field of sewage treatment, and in particular relates to a pre-treatment method of semi-coke wastewater. The method comprises the following steps: 1, adding the semi-coke wastewater into a micro-electrolytic reactor, using Fe scraps and activated carbon particles as filler, and performing micro-electrolysis to obtain wastewater subjected to micro-electrolysis; 2, adding the wastewater subjected to micro-electrolysis into a Fenton reagent reactor, dripping H2O2 into the Fenton reagent reactor, and performing reaction to obtain wastewater subjected to secondary treatment; 3, adding a polyacrylamide coagulant into the wastewater subjected to secondary treatment, regulating the pH value to be 7-9, and performing coagulating sedimentation to obtain pre-treated semi-coke wastewater. The pre-treatment method of the semi-coke wastewater provided by the invention can be used for effectively reducing the concentration of organic pollutants in the wastewater and improving the biodegradability of the wastewater, and can be used for greatly improving the organic matter removal capacity compared with an ordinary pre-treatment method in the prior art; in addition, the pre-treatment method is relatively cheap in required treatment reagent and easily-controllable in reaction conditions.

Description

Technical field [0001] The invention relates to the field of sewage treatment, in particular to a pretreatment method of blue charcoal wastewater. Background technique [0002] In the production process of blue charcoal (semi-coke), it is different from the production process of coke which adopts high temperature dry distillation (1000℃). The blue charcoal mainly adopts low temperature dry distillation (500℃) method. The raw coal is first dried naturally and then lifted by a bucket. The machine is lifted to the coal storage bin on the top of the furnace, and continuously added to the carbonization furnace for dry distillation, and blue charcoal is obtained by dry distillation at medium and low temperature. [0003] Blue charcoal wastewater is wastewater produced during the processing and refining of coal-based semi-coke, gas purification, and semi-coke products. Its water quality varies with the composition of the raw coal and the coking process. It contains high-concentration phen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06
Inventor 吕任生贾尔恒·阿哈提赵晨曦马俊英赵海燕邓文叶蔺尾燕
Owner 新疆维吾尔自治区环境保护科学研究院
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