Landfill leachate membrane concentrated solution evaporation and concentration method and system

An evaporation concentration system and landfill leachate technology are applied in the field of evaporation and separation of landfill leachate to achieve the effect of prolonging the brushing period and avoiding the problem of pipe blockage.

Inactive Publication Date: 2019-11-22
BEIJING TDR ENVIRON TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a method and system for evaporation and concentration of landfill leachate membrane concentrate to solve one or more technical problems in the prior art

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  • Landfill leachate membrane concentrated solution evaporation and concentration method and system
  • Landfill leachate membrane concentrated solution evaporation and concentration method and system
  • Landfill leachate membrane concentrated solution evaporation and concentration method and system

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Embodiment Construction

[0061] In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

[0062] figure 1 The flow chart of the method for evaporating and concentrating landfill leachate membrane concentrate according to an embodiment of the present invention is shown.

[0063] see figure 1 As shown, the embodiment of the present invention provides a method for evaporating and concentrating landfill leachate membrane concentrate, comprising the following steps:

[0064] Step S100: Concentrate the landfill leachate membrane concentrate by evaporation for the first time. The initial composition of landfill leachate membrane concentrate is complex, and the content of organic matter and ammonia n...

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Abstract

The embodiment of the invention provides a landfill leachate membrane concentrated solution evaporation and concentration method and system. The method comprises the following steps: carrying out primary evaporation and concentration on the landfill leachate membrane concentrated solution; discharging the landfill leachate membrane concentrated solution, which is evaporated and concentrated for the first time, into a flash tank device for flash evaporation and concentration until inorganic salt in the landfill leachate membrane concentrated solution is crystallized, wherein the flash tank device employs a closed-loop evaporation process to carry out flash concentration. According to the invention, a forced circulation and flash evaporation closed-loop evaporation process is adopted for concentration of the landfill leachate membrane concentrated solution; in the evaporation process, after the landfill leachate film concentrated solution is heated by the preheating equipment, a temperature difference exists between the landfill leachate film concentrated solution and the flash tank, so that a flash evaporation process is formed, the problem of pipe blockage of a shell-and-tube heatexchanger in the landfill leachate concentration process is completely avoided, and the tank brushing period is prolonged to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of evaporation and separation of landfill leachate, in particular to a method and system for evaporation and concentration of landfill leachate membrane concentrate. Background technique [0002] The landfill leachate membrane concentrate is the concentrate left after the landfill leachate is biodegraded and then treated with a reverse osmosis membrane or a nanofiltration membrane. It is mainly composed of refractory organic matter and high-priced salt, and is brownish black. These membrane filtration concentrates containing a large amount of pollutants pose serious threats to surface water, groundwater, and soil environment, and cannot be directly discharged into the environment. The reasonable treatment and disposal of them is also the application of reverse osmosis and nanofiltration technology in leachate treatment. A puzzle that must be solved. [0003] MVR (Mechanical Vapor Recompression, mechanical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F1/06C02F103/06
CPCC02F1/048C02F1/043C02F1/041C02F1/06C02F2103/06C02F2301/08C02F2303/14
Inventor 齐奇饶斌谢涛罗征其他发明人请求不公开姓名
Owner BEIJING TDR ENVIRON TECH CO LTD
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