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Electro-adsorption desalination method for saline wastewater

A salt-containing wastewater, electro-adsorption technology, applied in separation methods, dispersed particle separation, etc., can solve problems such as the influence of electro-adsorption efficiency, the reduction of electro-adsorption efficiency, and the increase of concentration difference between the water inlet and the water outlet, so as to achieve a reduction balance. Adsorption time, saving electrode material, uniform ion distribution effect

Inactive Publication Date: 2015-09-16
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this configuration, an insulating film is added between the two electrode plates of the adjacent electrode pair and a baffle is set, and the water is fed by a baffle method. When the number of electrode pairs is large, the water flow channel is too long, resulting in a gap between the two electrodes. If the working current is too low, the efficiency of electrosorption will decrease, and at the same time, the concentration difference between the water inlet and the water outlet will increase. Voltage, to a certain extent, will still increase power consumption, and also affect the overall electrosorption efficiency

Method used

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  • Electro-adsorption desalination method for saline wastewater

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Embodiment 1

[0021] Such as figure 1 As shown, the electric adsorption device constructed is composed of brine distribution pool 4, 1# stable adsorption pool group 7, 2# stable adsorption pool group 8, 3# stable adsorption pool group constant flow pump 9, N# stable adsorption pool group 13. A total of 15 stable adsorption pool groups, as well as insulating water inlet pipe 2, insulating frame 10, single-sided anode electrode plate 1, single-sided cathode electrode plate 6, double-sided electrode plate 12, insulating channel 11 and regulated DC power supply Composition 3, the single-sided positive electrode plate, single-sided negative electrode plate and double-sided electrode plate are all made of coconut shell activated carbon powder doped with conductive acetylene black and binder, loaded on a titanium current collector, and the single-sided positive electrode plate The plate and the single-sided cathode electrode plate are a pair, length × width = 10 × 8cm, arranged on both sides of th...

Embodiment 2

[0023] Such as figure 1As shown, the electric adsorption device constructed is composed of brine distribution pool 4, 1# stable adsorption pool group 7, 2# stable adsorption pool group 8, 3# stable adsorption pool group constant flow pump 9, N# stable adsorption pool group 13. A total of 15 stable adsorption pool groups, as well as insulating water inlet pipe 2, insulating frame 10, single-sided anode electrode plate 1, single-sided cathode electrode plate 6, double-sided electrode plate 12, insulating channel 11 and regulated DC power supply Composition 3, the single-sided positive electrode plate, single-sided negative electrode plate and double-sided electrode plate are all made of coconut shell activated carbon powder doped with conductive acetylene black and binder, loaded on a titanium current collector, and the single-sided positive electrode plate The plate and the single-sided cathode electrode plate are a pair, length × width = 10 × 8cm, arranged on both sides of the...

Embodiment 3

[0025] Such as figure 1 As shown, the electric adsorption device constructed is composed of brine distribution pool 4, 1# stable adsorption pool group 7, 2# stable adsorption pool group 8, 3# stable adsorption pool group constant flow pump 9, N# stable adsorption pool group 13. A total of 15 stable adsorption pool groups, as well as insulating water inlet pipe 2, insulating frame 10, single-sided anode electrode plate 1, single-sided cathode electrode plate 6, double-sided electrode plate 12, insulating channel 11 and regulated DC power supply Composition 3, the single-sided positive electrode plate, single-sided negative electrode plate and double-sided electrode plate are all made of coconut shell activated carbon powder doped with conductive acetylene black and binder, loaded on a titanium current collector, and the single-sided positive electrode plate The plate and the single-sided cathode electrode plate are a pair, length × width = 10 × 8cm, arranged on both sides of th...

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Abstract

The invention discloses an electro-adsorption desalination method for saline wastewater. According to the method, an electro-adsorption device is constructed at first, and the electro-adsorption device is composed of a saline water distribution pool, stable adsorption pool groups, a constant-flow pump, an insulation water inlet tube, an insulation outer frame, a single-sided anode electrode plate, a single-sided cathode electrode plate, a double-sided electrode plate, an insulation channel and a voltage-stabilizing direct-current power supply; saline water longitudinally flows among the electrode plats, and flows to the low-concentration saline water stable adsorption pool group from the high-concentration saline water stable adsorption pool group; electro-adsorption desalination for saline wastewater is carried out after the device is constructed; the electro-adsorption device is operated, the saline water in the saline water distribution pool enters stable adsorption pools through the constant-flow pump, and during an electro-adsorption process, anions and cations in the stable adsorption pools are directionally migrated to a double-sided electrode with opposite electrical properties, one surface of the double-sided electrode adsorbs the anions, and the other surface of the double-sided electrode adsorbs the cations. The method disclosed by the invention reduces the balanced adsorption time, saves electrode materials, and is suitable for electro-adsorption desalination for mixed saline water with a single component or a relatively consistent ion migration speed.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to an electro-adsorption desalination method for saline wastewater. Background technique [0002] The contradiction between the sharp increase of industrial water consumption and the shortage of water resources and the realization of "zero discharge" of sewage is deepening day by day. In recent years, major enterprises have actively built sewage treatment systems and advanced sewage treatment and reuse projects, which have increased the sewage recovery rate to 70-85%. However, the accumulation of salinity in reused water and the resulting deterioration of water quality indicators are becoming increasingly evident. The treatment of brine has become an important problem for corporate sewage recycling and energy saving and emission reduction. [0003] At present, the common desalination methods include evaporative crystallization, ion exchange, electrodialysis, reverse osmosis, etc. ...

Claims

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Application Information

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IPC IPC(8): C02F1/469
Inventor 潘大伟单明军董文轩王瑞徐斌孙悦
Owner UNIV OF SCI & TECH LIAONING
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