Slack coal pressure gasification wastewater resourceful treatment method and treatment system as well as application

A technology of pressurized gasification and treatment of crushed coal, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. To avoid problems such as long process, to achieve the effects of inhibiting sludge bulking, shortening sludge settling time, and improving treatment efficiency

Inactive Publication Date: 2013-09-11
DATANG INT CHEM TECH RESINST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the process is very long, it is not conducive to maintaining the stability and reliability of the system operation, the cost of investment and operation is high, and the economy is not enough

Method used

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  • Slack coal pressure gasification wastewater resourceful treatment method and treatment system as well as application
  • Slack coal pressure gasification wastewater resourceful treatment method and treatment system as well as application

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0040] This embodiment is used to illustrate the waste water resource treatment method and treatment system of the crushed coal pressurized gasification of the present invention.

[0041] Such as figure 1 The shown crushed coal pressurized gasification waste water resource treatment system includes sequentially connected oil-water separation unit, activated sludge unit, adsorption separation unit, coagulation clarification unit and biological filtration unit. In actual construction, existing equipment and technologies with the above functions can be selected. For example, the oil-water separation unit can include inclined tube grease traps and vortex-concave air flotation systems, and the activated sludge unit can include biological sedimentation tanks. (such as advection sedimentation tank, vertical flow sedimentation tank, radial flow sedimentation tank, inclined plate sedimentation tank and inclined tube sedimentation tank, etc.), the coagulation clarification unit can incl...

Embodiment 2

[0081] This embodiment is used to illustrate the waste water resource treatment method and treatment system of the crushed coal pressurized gasification of the present invention.

[0082] Such as figure 2 The shown crushed coal pressurized gasification waste water resource treatment system includes sequentially connected oil-water separation unit, activated sludge unit, adsorption separation unit, coagulation clarification unit and biological filtration unit. In actual construction, existing equipment and technologies with the above functions can be selected. For example, the oil-water separation unit can include inclined tube grease traps and vortex-concave air flotation systems, and the activated sludge unit can include biological sedimentation tanks. (such as advection sedimentation tank, vertical flow sedimentation tank, radial flow sedimentation tank, inclined plate sedimentation tank and inclined tube sedimentation tank, etc.), the coagulation clarification unit can inc...

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Abstract

The invention provides a slack coal pressure gasification wastewater resourceful treatment method. The treatment method sequentially comprises the following steps of: (1) performing oil-water separation on the wastewater to obtain wastewater after the oil-water separation treatment; (2) treating the wastewater obtained by the step (1) by use of active sludge, and performing mud-water separation to obtain wastewater after the active sludge treatment; (3) adding an adsorbent into the wastewater obtained by the step (2), and performing solid-liquid separation to obtain wastewater after the adsorption separation treatment; (4) adding a flocculating agent and/or flocculation aid into the wastewater obtained by the step (3), and precipitating to obtain wastewater after the coagulation clarifying treatment; and (5) treating the wastewater obtained by the step (4) by use of a filter material loaded with microorganisms to obtain dischargeable/recyclable water. The invention also provides a system for the method to realize resourceful treatment on the wastewater, and application of the treatment method or treatment system in treating slack coal pressure gasification wastewater.

Description

technical field [0001] The present invention relates to a waste water treatment method and treatment system, in particular to a method for resourceful treatment of crushed coal pressurized gasification waste water, and a system for resourceful treatment of crushed coal pressurized gasification waste water used in the method And the application of the method or the system in treating waste water from pressurized gasification of pulverized coal. Background technique [0002] Crushed coal pressurized gasification wastewater often contains a large amount of ammonia nitrogen, phenolic substances, oily substances, cyanides, single-ring aromatic hydrocarbons and polycyclic aromatic hydrocarbons, and heterocyclic compounds containing nitrogen, sulfur, and oxygen. The wastewater has the characteristics of large wastewater discharge, high concentration of organic matter, and high concentration of ammonia nitrogen. It is recognized as one of the difficult-to-treat industrial wastewater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 安洪光李春启岳培恒刘俊峰梅长松宋学平赵荧李国胜夏岚
Owner DATANG INT CHEM TECH RESINST
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