Combined pretreatment device and pretreatment method for semi-coke wastewater

A semi-coke wastewater and combined device technology, applied in the field of water treatment, can solve the problems of long multi-stage filtration process and complicated operation

Pending Publication Date: 2018-11-16
南京科莱恩环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem with this process is that the multi-stage...

Method used

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  • Combined pretreatment device and pretreatment method for semi-coke wastewater
  • Combined pretreatment device and pretreatment method for semi-coke wastewater
  • Combined pretreatment device and pretreatment method for semi-coke wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: as figure 1 As shown, the combined pretreatment device for semi-coke wastewater includes a collection pool 1, an acid adjustment pool 2, a high-efficiency oil separation device 3, a selective catalytic oxidation device (SECO) 6, and a selective catalytic reduction oxidation reactor (SCRO) 9 And neutralize the sedimentation tank 12, the collection tank 1 is connected with the acid adjustment tank 2, the acid adjustment tank 2 is in communication with the high-efficiency oil separation device 3, and the high-efficiency oil separation device 3 is connected with the selected The selective catalytic oxidation device (SECO) 6 is connected, and the selective catalytic oxidation device (SECO) 6 is connected with the selective catalytic reduction oxidation reactor (SCRO) 9, and the selective catalytic reduction oxidation reactor (SCRO) ) 9 is connected with the neutralization sedimentation tank, and the selective catalytic reduction oxidation reactor (SCRO) 9 inclu...

Embodiment 2

[0038] Embodiment 2: Adopt the device and the method in implementing 1, take the blue charcoal waste water of three groups of adjustment tanks that a certain coking plant in Shaanxi got as an example, the waste water quality index is as follows table 1:

[0039] Table 1 The water quality indicators before the treatment of the three groups of blue carbon wastewater

[0040]

[0041] The processing method includes the following steps:

[0042] (1) First of all, after the semi-coke wastewater is discharged into the collection pool 1, it is pumped to the acid adjustment pool 2 for pH adjustment, and the pH value of the semi-coke wastewater is adjusted to 1 to 2 by using hydrochloric acid. A large amount of precipitation, rapid stratification;

[0043] (2) Separating the upper layer floating oil and the bottom heavy oil in the waste water through the high-efficiency oil separation device 3;

[0044] (3) The clear water separated by oil separation enters the selective catalytic...

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Abstract

The invention relates to a combined pretreatment device and pretreatment method for semi-coke wastewater. The combined pretreatment device for semi-coke wastewater comprises a collection tank, an acidregulation tank, a high-efficiency oil separating unit, a selective catalytic oxidation unit (SECO), a selective catalytic reduction-oxidation unit (SCRO) and a neutralization and sedimentation tank,wherein the collection tank is connected with the acid regulation tank; the acid regulation tank is communicated with the high-efficiency oil separating unit; the high-efficiency oil separating unitis connected with the selective catalytic oxidation unit (SECO); the selective catalytic oxidation unit (SECO) is connected with the selective catalytic reduction-oxidation unit (SCRO); the selectivecatalytic reduction-oxidation unit (SCRO) is connected with the neutralization and sedimentation tank; the selective catalytic reduction-oxidation unit (SCRO) comprises a selective catalytic reductionunit (SCR) and a selective catalytic oxidation unit (SCO); and the selective catalytic reduction unit (SCR) and the selective catalytic oxidation unit (SCO) are independent and sequentially communicate with each other. The combined pretreatment device has the advantages of simple structure and controllable operation.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a pretreatment combined device and method for semi-coke wastewater. Background technique [0002] Semi-coke wastewater, also known as semi-coke wastewater, refers to low-metamorphism coal (non-caking coal, weakly caking coal, long-flame coal) in the process of medium and low temperature dry distillation (about 600-800 ° C), gas purification, and semi-coke steam quenching process. Formed as an industrial waste water. This kind of wastewater has complex components and contains a large number of refractory and highly toxic pollutants, such as organic pollutants such as benzene series, phenols, polycyclic aromatic hydrocarbons, nitrogen-oxygen heterocyclic compounds, and inorganic pollutants such as heavy metals. Highly polluting and highly toxic industrial wastewater. After the National Ministry of Industry and Information Technology included semicoke (semi-coke) in the in...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F103/34
CPCC02F9/00C02F1/40C02F7/00C02F1/4672C02F1/66C02F1/56C02F1/725C02F2103/34
Inventor 范玉明徐延忠刘大华
Owner 南京科莱恩环境工程有限公司
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