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Coom pressurized gasification wastewater treatment system and treatment method, and application thereof

A technology of crushed coal pressurized gasification and wastewater treatment system, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Low problems, to achieve the effect of convenient construction process, short residence time and simple process flow

Active Publication Date: 2013-12-25
DATANG INT CHEM TECH RESINST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the object of the present invention is to overcome the defects such as complex process, low efficiency, high cost, and insufficient impact resistance in the existing treatment process of crushed coal pressurized gasification wastewater, and to provide a simple process flow, A waste water treatment system for pressurized gasification of pulverized coal with high treatment efficiency, low cost, and good impact resistance, a treatment method for the treatment system, and the treatment system or the treatment method for treating waste water from pressurized gasification of pulverized coal application in

Method used

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  • Coom pressurized gasification wastewater treatment system and treatment method, and application thereof
  • Coom pressurized gasification wastewater treatment system and treatment method, and application thereof

Examples

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Embodiment 1

[0045] This embodiment is used to illustrate the crushed coal pressurized gasification wastewater treatment system and its treatment method of the present invention.

[0046] figure 1 An embodiment of the crushed coal pressurized gasification wastewater treatment system of the present invention is shown. The system includes a regulating unit 1, a primary adsorption sedimentation unit 2 (including a primary adsorption pool 21 and a primary sedimentation pool 22), a secondary adsorption sedimentation unit 3 (including a secondary adsorption pool 31 and a secondary sedimentation pool) connected in sequence through pipelines. Pool 32), coagulation sedimentation unit 4, anoxic biochemical treatment unit 5 and aerobic biochemical treatment unit 6. The bottom area of ​​the secondary sedimentation tank may be connected with the primary adsorption tank.

[0047] The method for treating waste water from pressurized gasification of pulverized coal may include the following steps:

[0...

Embodiment 2

[0058] This embodiment is used to illustrate the crushed coal pressurized gasification wastewater treatment system and its treatment method of the present invention.

[0059] The crushed coal pressurized gasification wastewater treatment system in the present embodiment is the same as that of Embodiment 1, see figure 1 .

[0060] The crushed coal pressurized gasification wastewater treatment method in this embodiment is basically the same as that of Embodiment 1, the difference being:

[0061] In step 3), the weight ratio of waste water to adsorbent used is 70:1.

[0062] In step 4), the weight ratio of waste water to active coke used is 100:1.

[0063] In step 6), the flocculant added is a biological flocculant.

[0064] In step 7), the waste water is treated in the anoxic biochemical treatment unit for 30 hours.

[0065] In step 8), the treatment time of wastewater in the aerobic biochemical treatment unit is 50h, so that the total treatment time of anoxic and aerobic bi...

Embodiment 3

[0068] This embodiment is used to illustrate the crushed coal pressurized gasification wastewater treatment system and its treatment method of the present invention.

[0069] figure 2 An embodiment of the crushed coal pressurized gasification wastewater treatment system of the present invention is shown. The system includes a regulating unit 1, a primary adsorption sedimentation unit 2 (including a primary adsorption pool 21 and a primary sedimentation pool 22), a secondary adsorption sedimentation unit 3 (including a secondary adsorption pool 31 and a secondary sedimentation pool) connected in sequence through pipelines. Pool 32), coagulation sedimentation unit 4, anoxic biochemical treatment unit 5 and aerobic biochemical treatment unit 6. The bottom of the secondary sedimentation tank can be connected with the primary adsorption tank. Moreover, the bottom of the primary sedimentation tank may also be connected to the primary adsorption tank.

[0070] The method for trea...

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Abstract

The invention provides a coom pressurized gasification wastewater treatment system which comprises a regulation unit, a primary adsorption precipitation unit, a secondary adsorption precipitation unit, a coagulative precipitation unit, an anoxic biochemical treatment unit and an aerobic biochemical treatment unit which are sequentially connected, wherein an adsorbent used by the primary adsorption precipitation unit comprises the precipitate in the secondary adsorption precipitation unit. The invention also provides a treatment method using the coom pressurized gasification wastewater treatment system and application of the treatment system or method in treating coom pressurized gasification wastewater.

Description

technical field [0001] The invention relates to a waste water treatment system, in particular to a coal gasification waste water, especially a treatment system and a treatment method for the crushed coal pressurized gasification waste water and their application. Background technique [0002] Coal gasification technology usually includes two kinds of atmospheric pressure gasification and pressurized gasification. It refers to the reaction of gasification agent (air, oxygen or steam) with coal to generate coal gas under normal pressure or pressurized conditions and maintain a certain temperature. The main components are combustible gases such as carbon monoxide, hydrogen, and methane. Sulfur and ash in coal are removed during or after the gasification process, so that the emission of pollutants can be controlled. Therefore, coal gasification is an important method for preparing clean fuels, and at the same time improves energy conversion efficiency. Crushed coal pressurized ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 安洪光李春启牟伟腾刘俊峰梅长松宋学平赵荧李国胜张文博
Owner DATANG INT CHEM TECH RESINST
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