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Rectification pretreatment and salt treatment method for high-salt and high-organic-matter wastewater

An organic matter, pretreatment technology, applied in chemical instruments and methods, heating water/sewage treatment, neutralized water/sewage treatment, etc. problem, to achieve the effect of zero emissions

Inactive Publication Date: 2019-07-26
山东特保罗环保节能科技有限公司
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Problems solved by technology

Due to the high salt content and the inhibitory effect of high salinity on microorganisms, it is difficult to achieve the expected treatment effect by direct biological methods
In addition, it contains a high content of organic matter, and some of the organic matter has a lower boiling point than water, while some organic matter has a higher boiling point than water, making it even more difficult to treat effectively

Method used

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  • Rectification pretreatment and salt treatment method for high-salt and high-organic-matter wastewater

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Embodiment Construction

[0024] The features and principles of the present invention will be described in detail below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, not to limit the protection scope of the present invention.

[0025] Such as figure 1 As shown, the rectification pretreatment and salt treatment method of high-salt and high-organic waste water, the high-salt and high-organic waste water passes through the sedimentation tank, regulating tank, rectification pretreatment, evaporation crystallization, and salt pyrolysis in order to obtain salt that meets industrial requirements. products.

[0026] The high-salt and high-organic waste water first passes through the sedimentation tank 1, and is recovered or reused through static stratification, upper liquid separation and bottom sedimentation, and the intermediate main water phase enters the regulating tank 2.

[0027] Adjust the pH value of the water in the adjustment ta...

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Abstract

The invention provides a rectification pretreatment and the salt treatment method for high-salt and high-organic-matter wastewater. The high-salt and high-organic-matter wastewater firstly passes through a sedimentation tank and then passes through an adjusting tank, acid or alkali liquor is added, the pH value in the water is adjusted to be 7-9, and then the rectification pretreatment is carriedout to evaporate out organic matters with low boiling points, the organic matters with low boiling points in the wastewater are evaporated to obtain the organic matters with low boiling points, wherein the concentration of the organic matters with low boiling points is between 50% and 99%, and the recovery rate is between 60% and 99.9%. The wastewater from which the organic matters with low boiling points are evaporated out enters evaporation crystallization, and salt in the wastewater is crystallized. The crystallized salt is subjected to pyrolysis, the organic matters entrained in the salt are converted into carbon dioxide and water, the pyrolyzed salt can meet the industrial requirement, and meanwhile heat is recovered for heat consumption of rectification pretreatment.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for rectification pretreatment and salt treatment of wastewater with high salinity and high organic matter. Background technique [0002] High-salt and high-organic wastewater is a common type of difficult-to-treat wastewater, generally referring to wastewater with a total salt content of at least 1%. High organic content and complex composition, COD Cr (Chemical oxygen demand) concentration is generally above 10000mg / L, and also contains a large amount of refractory organic pollutants. Due to the high salt content and the inhibitory effect of high salinity on microorganisms, it is difficult to achieve the expected treatment effect by direct biological methods. In addition, it contains a high content of organic matter, and some of the organic matter has a lower boiling point than water, while some organic matter has a higher boiling point than water, makin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F101/30
CPCC02F1/04C02F1/38C02F1/66C02F9/00C02F2001/007C02F2101/30
Inventor 杨亮亮牛俊卜宋荣森周承家
Owner 山东特保罗环保节能科技有限公司
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