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Softening-free concentration device for desulfurization wastewater from power plant

The technology of desulfurization wastewater and concentration device is applied in the field of water treatment, which can solve the problems of high concentration cost and high softening cost, and achieve the effects of convenient operation, low energy consumption and simple equipment structure.

Pending Publication Date: 2017-03-08
HANGZHOU WATER TREATMENT TECH DEV CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the relatively high content of calcium and magnesium ions in the desulfurization waste liquid, the cost of softening is relatively high, resulting in high cost of concentration

Method used

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  • Softening-free concentration device for desulfurization wastewater from power plant

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Experimental program
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Effect test

Embodiment 1

[0023] as attached figure 1 As shown in the structure, there is no need to soften and concentrate the desulfurization wastewater of a power plant, which includes a crystallization filter device, a high-frequency magnetic field generator, and an EDR device; Calcium crystals are discharged, and the water outlet of the crystallization filter device is connected to the inlet of the EDR device, wherein the crystallization filter device fixes calcium sulfate crystal seeds with a diameter of 1-100 microns on the stainless steel multi-layer grid plate in the device, The filter membrane wherein is a tetrafluoroethylene hollow fiber membrane; the high-frequency magnetic field generator utilizes a high-frequency oscillator to generate a high-frequency magnetic field with a frequency of 50KHz-50MHz; the dope outlet of the EDR device is divided into two , which are respectively connected to the crystallization filter device and the evaporation device, and the fresh water outlet is connecte...

Embodiment 2

[0027] according to figure 1 As shown in the principle structure, the power plant desulfurization wastewater with an assembly capacity of 1 ton per hour does not need a softening and concentrating device, including a crystallization filter device, a high-frequency magnetic field generator, and an EDR device.

[0028] Crystallization filter device, in which calcium sulfate seeds with a diameter of 15 microns are fixed on a stainless steel multi-layer grid plate with a density of 10 per square centimeter. The multi-layer grid plate can rotate around the center at a speed of 1 minute 10 turns. The filter is a tetrafluoroethylene hollow fiber membrane with a membrane diameter of 1.2 mm and a membrane pore size of 0.5 micron. Place the EDR membrane assembly in a high-frequency magnetic field with a frequency of 300KHz. Frequent pole reversal homogeneous membrane electrodialysis device, pole reversal frequency is 4 times per hour.

[0029] A stream of desulfurization waste liquid...

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Abstract

The invention discloses equipment in the technical field of water treatment, and particularly relates to a softening-free concentration device for desulfurization wastewater from a power plant. The softening-free concentration device comprises a crystallization and filter device, a high-frequency magnetic field generator and an EDR (electrodialysis reversal) device. A produced water outlet of the crystallization and filter device is connected with an inlet of the EDR device, a strong liquor outlet of the EDR device is divided into two branches, the two branches are respectively connected with the crystallization and filter device and an evaporation device, a fresh water outlet is connected with a desulfurization system of the power plant, the EDR device comprises EDR membrane assemblies, and the EDR membrane assemblies are arranged in high-frequency magnetic fields of the high-frequency magnetic field generator. The softening-free concentration device has the advantages that the softening-free concentration device is simple in equipment structure and convenient to operate; the softening-free concentration device is low in energy consumption and high in efficiency in integral implementation procedures, and the like.

Description

technical field [0001] The invention belongs to equipment in the technical field of water treatment, and in particular relates to a plant desulfurization wastewater without softening and concentrating device. [0002] technical background [0003] The water consumption of the thermal power industry ranks first among the five high water consumption industries (thermal power generation, textile, papermaking, steel and petrochemical industry), and its water consumption accounts for more than 50% of the total industrial water consumption in the country. According to the "Twelfth Five-Year Plan for Industrial Water Conservation" formulated under the auspices of the former State Economic and Trade Commission, the total amount of water used in the country shall be controlled within 635 billion cubic meters, and the national water consumption per 10,000 yuan of GDP shall be reduced to less than 105 cubic meters, which is 30 times lower than that in 2010. %; the water consumption per ...

Claims

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Application Information

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IPC IPC(8): C02F9/12C01F11/46
CPCC01F11/468C02F9/00C02F1/048C02F1/44C02F1/487C02F1/4693C02F2103/18C02F2301/08
Inventor 金可勇胡鉴耿金水玉付晓靖
Owner HANGZHOU WATER TREATMENT TECH DEV CENT
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