Method and apparatus for recovering soluble salt wastewater
A technology for dissolving salt and wastewater, applied in chemical instruments and methods, natural water treatment, multi-stage water treatment, etc., can solve the problems of high cost, high temperature waste gas cannot be recycled, etc., and achieve high concentration, low cost and high cleanliness. Effect
Pending Publication Date: 2017-08-18
阳煤集团青岛恒源化工有限公司
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a method and device for recovering soluble salt wastewater, solve the problem of high cost of setting up additional high-salt wastewater treatment devices, and the high-temperature waste gas produced by the heating device cannot be discharged directly. The problem with recycling
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Embodiment 1
[0021] Such as figure 1 As shown, the device for recovering and treating soluble salt wastewater involved in this embodiment includes an induced draft fan 1, an evaporation concentrator 2, a waste liquid tank 3, a waste liquid pump 4, an intermediate tank 5, an intermediate pump 6, a concentrated circulation pump 7, a suspension Separator 8, thickener 9 and centrifuge 10, evaporative concentrator 2 is divided into a lower concentration section and an upper evaporation section, the first spray device 11 is arranged on the upper part of the concentration section, and the second spray device 12 is arranged on the upper part of the evaporation section , the induced draft fan 1 communicates with the concentration section, the waste liquid tank 3 communicates with the inlet of the second spraying device 12 through the waste liquid pump 4, the inlet of the middle tank 5 communicates with the bottom of the evaporation section, and the outlet of the middle tank 5 communicates with the f...
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The present invention discloses a method and an apparatus for recovering soluble salt wastewater. The apparatus comprises an induced fan, an evaporation concentration device, a waste liquid tank, a waste liquid pump, a middle tank, a middle pump, a concentration circulation pump, a suspension separator, a thickening device and a centrifuge, wherein a first spraying device is arranged on the upper portion of a concentration section, a second spraying device is arranged on the upper portion of an evaporation section, the induced fan is connected to the concentration section, the waste liquid tank is communicated to the second spraying device through the waste liquid pump, the inlet of the middle tank is communicated to the bottom portion of the evaporation section, the outlet of the middle tank is communicated to the first spraying device through the middle pump, the water outlet of the concentration section is communicated to the suspension separator by the concentration circulation pump, the outlet on the upper portion of the suspension separator is communicated to the waste liquid tank, the outlet on the bottom portion of the suspension separator is communicated to the top portion of the thickening device, and the bottom portion of the thickening device is communicated to the centrifuge. According to the present invention, the high temperature waste gas generated by the existing heating device thermal conducting oil furnace is completely utilized; and the concentration of the high salt wastewater is increased, and the heat of the high temperature waste gas is completely utilized, such that the cost is low.
Description
[0001] Technical field: [0002] The invention belongs to the technical field of waste water treatment, and specifically relates to a method and device for treating and recovering soluble salt waste water by using high-temperature waste gas. use. [0003] Background technique: [0004] A large amount of waste water is generated during the preparation of the catalyst in the synthesis process of propylene carbonate, and the amount of waste water is 5 tons per hour. It has been determined that the main component of wastewater is sodium sulfate, with a content of about 8%. The existing industrial sodium sulfate wastewater treatment basically uses the MVR process. As the current mainstream technology, using the MVR process, the production cost of treating one party's wastewater is about 100 yuan. The annual treatment cost is as high as more than 4 million yuan, not including equipment depreciation, management costs, personnel wages and other expenses. In addition, during the prod...
Claims
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Login to View More IPC IPC(8): C02F1/16C01D5/00C02F103/34
CPCC01D5/00C02F1/16C02F2301/08C02F2103/34
Inventor 刘力源梁明国杨立群蔺伟飞
Owner 阳煤集团青岛恒源化工有限公司