System and method for realizing concentration crystallization of high-salt wastewater by air stripping
A high-salt wastewater, concentrated crystallization technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, heating water/sewage treatment, etc., can solve the problem of high cost and achieve the effect of reducing investment and operating costs
Inactive Publication Date: 2019-11-15
WUHAN HONGAO GREEN ENERGY ENG
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[0003] In order to overcome the above-mentioned deficiencies of the prior art, the present invention proposes a system and method for realizing concentrated crystallization of high-salinity wastewater by using air stripping to solve the problem of high cost of evaporation, concentration and crystallization of existing high-salinity wastewater
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[0023] The following examples are presented to illustrate certain embodiments of the invention and should not be construed as limiting the scope of the invention. The content disclosed in the present invention can be improved simultaneously from materials, methods and reaction conditions, and all these improvements should fall within the spirit and scope of the present invention.
[0024] Such as figure 1 As shown, a system that uses air stripping to realize the concentration and crystallization of high-salt wastewater includes a first heat exchanger 1, a second heat exchanger 2, an evaporation tower 4, and a cooling tower 5. The first heat exchanger 1 The first tray at the top of the evaporation tower 4 is connected through the second heat exchanger 2, the inlet of the first heat exchanger 1 is connected to the waste water inlet pipe 8, the second heat exchanger 2 is connected with a heat source, and the second heat exchanger 1 is connected to the waste water inlet pipe 8. T...
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The invention relates to a system and method for realizing concentration crystallization of high-salt wastewater by air stripping. The system includes a first heat exchanger, a second heat exchanger,an evaporation tower, and a cooling tower. The first heat exchanger is connected to the evaporation tower through the second heat exchanger, the inlet of the first heat exchanger is connected to a wastewater inlet pipe, the bottom of the evaporation tower is connected to a blower through a pipeline, the high-salt wastewater discharged from the bottom of the evaporation tower is connected to a crystallizer or wastewater inlet pipe through a pipeline, the top of the evaporation tower is connected to the bottom of the cooling tower through a pipeline, the bottom of the cooling tower is communicated with the inlet of the first heat exchanger through a pump, the outlet of the first heat exchanger is communicated with a third heat exchanger through a pipeline, and the outlet of the third heat exchanger is communicated with the top of the cooling tower and a fresh water recovery pipe respectively through pipelines. The system and method for realizing concentration crystallization of high-saltwastewater by air stripping provided by the invention make use of air stripping and a low grade heat source to realize evaporation concentration crystallization of high-salt wastewater, and greatly reduces the investment and operation cost of high-salt wastewater environmental protection devices.
Description
technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a system and method for realizing concentration and crystallization of high-salt waste water by air stripping. Background technique [0002] High-salt wastewater refers to wastewater with a total salt content of at least 1%, which mainly comes from the collection and processing of coal chemical industry, metallurgy, chemical industry, and new materials. High-salt wastewater is often treated by evaporation, concentration and crystallization, which has complex treatment processes and high investment and operating costs. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention proposes a system and method for realizing concentration and crystallization of high-salinity wastewater by air stripping, which solves the problem of high cost of evaporation, concentration and crystallization of existing ...
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IPC IPC(8): C02F9/10
CPCC02F1/001C02F1/04
Inventor 谭德军
Owner WUHAN HONGAO GREEN ENERGY ENG