High-density electric flocculation device with slidable pole plates and use method thereof

An electro-flocculation, high-density technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high power consumption, short anode life, and easy passivation of electrodes. , to achieve the effect of improving the life of the electrode, prolonging the replacement cycle, and increasing the relative flow rate

Active Publication Date: 2014-10-01
江阴和悦鑫环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-density electrocoagulation device with slidable plates and its use method, so as to solve the common problems of current electrocoagulation devices such as easy passivation of electrodes, large power consumption, and short anode life.

Method used

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  • High-density electric flocculation device with slidable pole plates and use method thereof
  • High-density electric flocculation device with slidable pole plates and use method thereof
  • High-density electric flocculation device with slidable pole plates and use method thereof

Examples

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Effect test

Embodiment 1

[0039] Two 65×65×600mm stainless steel square tubes are used as shells, 2mm thick carbon steel plates are used as anodes and bipolar electrodes, and 2mm thick stainless steel plates are used as cathodes to make electroflocculation devices. The volume of the device is 2L when no electrodes are installed. A traditional electrocoagulation device (device 1) is made with a shell, the distance between the plates is 6mm, and 7 plates can be installed. Another shell is made device (device 2) of the present invention, and the polar plate pitch is 1.2mm, can adorn 19 polar plates.

[0040] The original arsenic concentration of arsenic-containing wastewater in a concentrator is 22.3 mg / L, and it is treated by device 1 and device 2 respectively. The specific steps are:

[0041] After adjusting the pH value to 5 with quicklime, they enter device 1 and device 2 at a rate of 30L / hour respectively, and the working current is set to 4A. At this time, the operating voltage of device 1 is 5.2...

Embodiment 2

[0044] Two 65×65×600mm stainless steel square tubes are used as shells, 3mm thick magnesium alloy plates (brand: AZ31) are used as anodes and amphoteric electrodes, and 2mm thick stainless steel plates are used as cathodes to make a traditional electroflocculation device ( Device 3) and the electrocoagulation device (device 4) according to the present invention. The volume of the device is 2L when no electrodes are installed. The distance between the 3 pole plates of the device is 5mm, and 7 pole plates can be installed. The distance between the 4 pole plates of the device is 1.5mm, and 15 pole plates can be installed.

[0045] The zinc and cadmium in wastewater from a smelter exceeded the standard. The original zinc concentration was 44.7mg / L, the cadmium concentration was 16.9mg / L, and the pH value was 3.8. Device 3 and device 4 were used to treat it respectively. The specific steps are:

[0046] The raw water directly enters device 3 and device 4 without adjusting the pH...

Embodiment 3

[0049] Using two 110×110×600mm stainless steel square tubes as shells, 2mm thick aluminum plates (grade: 1100) as anodes and amphoteric electrodes, and 2mm thick stainless steel plates as cathodes, a traditional electroflocculation device (device 5 ) and the electrocoagulation device (device 6) of the present invention. The volume of the device is 6L when no electrodes are installed. The distance between the 5 pole plates of the device is 11mm, and 8 pole plates can be installed. The distance between the 6 pole plates of the device is 1.5mm, and 27 pole plates can be installed.

[0050] A certain electroplating wastewater containing 23.5 mg / L of copper was treated with device 5 and device 6 respectively. The specific steps are:

[0051] The raw water is adjusted to pH 6 with sodium hydroxide and then enters device 5 and device 6 for treatment. The water inflow rate is 60L / hour and the working current is 12A. At this time, the operating voltage of device 5 is 9.8V, and the ...

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Abstract

The invention relates to the technical field of water purification, in particular to high-electrode-density electric flocculation device with slidable pole plates and a use method thereof. The device does not use a fixing clamping groove, the pole plates are capable of sliding along the normal direction, and the pole plates are separated by plastic nuts or plastic bars; and after all the pole plates are installed in a housing, the pole plates are fixed by flat air pockets parallel to the pole plates, and the effect of preventing the leakage of water is achieved. Compared with the existing electric flocculation device, the device disclosed by the invention has the advantages that the distance between the pole plates is greatly reduced, and an electrode filling density can be increased by 1-2 times; by increasing the electrode filling density and reducing the distance between the pole plates, a reaction area can be increased, a system resistance can be reduced, and polarization phenomenon can be weakened favourably, thus alleviating the problem that electrodes are liable to passivate; when certain dimensions and processing capacity of a processor are reached, the device disclosed by the invention is capable of reducing electric consumption by 30-60% and prolonging the service life of electrodes 1-2 times; and the device disclosed by the invention is capable of solving the problems of high electric consumption, high electrode passivation rate, short replacement period of the electrodes, and the like which generally exist in electric flocculation methods.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to an electroflocculation device with slidable pole plates and high electrode density and a method for using the same. Background technique [0002] Electrocoagulation technology is used to treat wastewater. It has the advantages of good treatment effect, less waste residue, and strong water quality adaptability. It can be applied to wastewater treatment in many industries. For example: treatment of electroplating plant wastewater, mineral processing plant wastewater, smelter wastewater, paper mill wastewater, oil field wastewater, petrochemical wastewater, textile mill wastewater, slaughterhouse wastewater, food and beverage factory wastewater, domestic wastewater, landfill leachate, etc. [0003] Electrocoagulation technology has a good application prospect in wastewater treatment, but the current electrocoagulation devices generally have the following problems: 1) The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/463C02F1/62
Inventor 尚建库徐正超
Owner 江阴和悦鑫环保科技有限公司
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