External circulation evaporation separation method for high-salt industrial wastewater

A technology for industrial wastewater and separation methods, applied in chemical instruments and methods, heating water/sewage treatment, water/sewage multi-stage treatment, etc. , the effect of small temperature difference

Inactive Publication Date: 2019-06-11
BEIJING ECO ISLAND SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For this reason, the embodiment of the present invention provides a high-salt industrial wastewater external circulation evaporation separation method to solve the problems of high cost and poor treatment effect of the high-salt wastewater treatment method in the prior art

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  • External circulation evaporation separation method for high-salt industrial wastewater
  • External circulation evaporation separation method for high-salt industrial wastewater

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Embodiment 1

[0029] refer to figure 1 , the present embodiment provides a high-salt industrial wastewater external circulation evaporation separation method, which includes the following steps:

[0030] In step S1, the high-salt wastewater stock solution is discharged into the stock solution tank A3 through the A feed pipeline 101, and the high-salt wastewater stock solution is discharged into the stock solution tank B4 through the B feed pipeline 102.

[0031] Preferably, the feed main pipe 1 is connected with the A feed pipe 101 and the B feed pipe 102, and the scale inhibitor is added to the feed main pipe 1, and the scale inhibitor and the high-salt wastewater are mixed uniformly and then enter through the A feed pipe 101 respectively. Raw solution tank A3 and feed pipe 102 from B enters raw solution tank B4. Scale inhibitors can effectively prevent scaling of related equipment during the process of heating and evaporating high-salt wastewater, effectively reducing equipment corrosion...

Embodiment 2

[0048] This embodiment provides another high-salt industrial wastewater external circulation evaporation separation method, and the rest of the same parts of Embodiment 1 will not be repeated here, and only the different parts will be introduced below.

[0049] In this embodiment, the antiscalant is added to the main feed pipe 1, and after being fully mixed by the pipeline mixer 16 installed on the main feed pipe 1, the stock solution of high-salt wastewater enters the stock solution tank A3 and the stock solution tank B4 respectively; Pipeline 101, the high-salt wastewater in the stock solution tank A3 is fed to the evaporator 12 through the first metering pump 5 through the conductivity meter and the density meter 13; Circulation, the separation chamber of the evaporator 12 separates the boiling solution and the liquid foam and droplets entrained in the steam, and the secondary steam enters the condenser 8; the concentrated liquid returns to the Raw solution tank A3; when th...

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Abstract

The embodiment of the invention discloses an external circulation evaporation separation method for high-salt industrial wastewater, which comprises the following steps: 1) raw liquor of high-salt wastewater is discharged into a raw liquor tank A through a feeding pipeline A, and the raw liquor of high-salt wastewater is discharged into a raw liquor tank B through a feeding pipeline B; 2) the rawliquor of high-salt wastewater in the raw liquor tank A is fed to an evaporator through a first metering pump and evaporated and concentrated in the evaporator, and the feeding pipeline A is closed and the feeding pipeline B is opened at the same time; and 3) the raw liquor of high-salt wastewater in the raw liquor tank B is fed to an evaporator through a second metering pump and evaporated and concentrated in the evaporator. The external circulation evaporation separation method for high-salt industrial wastewater provided by the embodiment of the invention has simple operation, can not onlyeffectively regulate the concentration ratio of high-salt wastewater in heating evaporation, but also has less influence by human manipulation and good treatment effect of high-salt wastewater; moreover, the temperature difference in the evaporation process of the method is small, equipment corrosion can be reduced, and safety is high.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of high-salt wastewater, in particular to a method for evaporation and separation of high-salt industrial wastewater in external circulation. Background technique [0002] High-salt wastewater usually refers to industrial organic wastewater with a total dissolved solids (TDS) content higher than 1%, which is commonly found in chemical, pharmaceutical, oil and gas, and seafood processing industries. [0003] In the hazardous waste disposal industry, after the hazardous waste is processed by the process, the wastewater obtained after physical, chemical, biological and other treatments will still obtain effluent with high salinity, and the effluent components mainly contain inorganic salts, a small amount of COD and Chemicals such as antiscalants. For zero discharge requirements or miscellaneous water reuse standards, further advanced treatment of effluent with high salt content is of...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C02F1/04C02F9/10
Inventor毛玉麒张万柏沈莹赵宏飞赵然张硕熊大伟马名烽杨晶郑磊吕爱琪杨大鹏肖永
OwnerBEIJING ECO ISLAND SCI & TECH