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Percolate concentrated solution evaporation and concentration method and system

An evaporative concentration system and evaporative concentration technology are applied in the field of evaporative concentration of leachate concentrate to achieve the effect of reducing operating pressure

Pending Publication Date: 2020-07-17
BEIJING TDR ENVIRON TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a leachate concentrate evaporation and concentration method and system to solve one or more technical problems in the prior art

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  • Percolate concentrated solution evaporation and concentration method and system
  • Percolate concentrated solution evaporation and concentration method and system
  • Percolate concentrated solution evaporation and concentration method and system

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Embodiment Construction

[0046] 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.

[0047] figure 1 A flow chart showing the steps of the method for evaporating and concentrating the leachate concentrate according to the embodiment of the present invention.

[0048] In a first aspect, an embodiment of the present invention provides a method for evaporating and concentrating a leachate concentrate. see figure 1 As shown, the method includes:

[0049] Step S100: Carry out the first evaporation and concentration of the feed liquid. The first evaporative concentration is to directly evaporate and concentrate the leachate concentrate that is only acid-adjusted. Since the leachate concentrat...

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Abstract

The embodiment of the invention provides a percolate concentrated solution evaporation and concentration method and system. The percolate concentrated solution evaporation and concentration method comprises the steps: carrying out primary evaporation and concentration on feed liquid; filtering or precipitating the feed liquid subjected to primary evaporation and concentration to remove suspended matters and solid particles in the feed liquid; and carrying out secondary evaporation and concentration on the filtered or precipitated feed liquid. According to the percolate concentrated solution evaporation and concentration method provided by the invention, the evaporation process of the leachate concentrated solution is divided into two parts; the operation pressure of the equipment is reduced; filtration or precipitation is carried out after the first evaporation and concentration; the reduction of the heat transfer efficiency of equipment caused by inorganic scaling and blockage of organic slime attached to a heat exchanger in the evaporation process of the leachate concentrated solution and unability to function properly are effectively avoided; and the filtering or precipitating process is carried out at high temperature, so that heat loss is avoided, the cleaning period of the equipment is shortened, and meanwhile, the evaporation and concentration continuous efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of sewage purification, in particular to a leachate concentrate evaporation and concentration method and system. Background technique [0002] The water quality of the leachate concentrate is complex, containing a variety of inorganic substances including sodium salt, calcium salt, magnesium salt, ammonium bicarbonate, sulfate chloride, silica and organic substances with complex components. Evaporation is a physical process of separating volatile components from non-volatile components. Heating the feed liquid boils the water to vaporize and continuously removes the vaporized water vapor. Therefore, the leachate concentrate is mostly concentrated by evaporation. [0003] When the leachate concentrate is evaporated, the water boils out of the leachate, and the pollutants remain in the concentrate, while all heavy metals and inorganic substances and most of the organic substances are less volatile and remain i...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F103/06
CPCC02F9/00C02F1/04C02F1/001C02F2001/007C02F1/5236C02F1/56C02F2103/06C02F2301/08
Inventor 张海涛齐奇谢涛罗征饶斌其他发明人请求不公开姓名
Owner BEIJING TDR ENVIRON TECH CO LTD
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