JPH0593595U - Polluted water treatment device by electrolysis method - Google Patents

Abstract

(57) [Summary] [Purpose] To keep the negative and positive electrode plates of the polluted water treatment device by the electrolytic method always clean and free of oxide film. [Structure] The inside of the electrolytic treatment tank is divided into a plurality of elongated cells 10 by partition walls 9 facing both ends, and the electrode plates are opposed to each other in the width direction of each cell 10 to form a plurality of rows of electrode plates 11, 1.
Place 2 The scum scraping machine 13 is moved in the length direction of the cell, the rotating brush 20 is supported by the scum scraping machine 13, and the surfaces of the bipolar plates 11 and 12 are cleaned every time the floating scum scraping operation is performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrolyzed polluted water treatment device for electrolytically treating polluted water to remove dissolved / suspended substances existing in water.

[0002]

[Prior Art]

 Conventionally, an electrolytic treatment method has been used as a water purification method for domestic wastewater and industrial wastewater. This is because the treated polluted water is electrolyzed by passing it between the negative and positive electrodes to oxidize, reduce, decompose, precipitate, adsorb, agglomerate, float, and separate the dissolved and suspended substances. In the conventional equipment using this electrolytic treatment method, the negative and positive electrode plates are made to face each other in the electrolytic treatment chamber and the polluted water to be treated is forcibly forced into the electrolytic cell by a pump. The electrolytic treatment is carried out while it is being sent and forcedly flows through the electrolytic treatment tank, and the flocs generated during that time are floated and separated, whereby the flotation scum accumulated on the surface of the electrolytic bath is scraped by a scraper. They are collected horizontally and stored in the scum storage tank.

[0003]

[Problems to be solved by the device]

 In such a conventional device, there is a problem that flock scales and the like adhere to the surface of the electrode plate, which lowers the electrolytic efficiency.Also, aluminum is used for the anode plate, and a high aggregation effect of the aluminum hydroxide produced is obtained. In many cases, it is used, but in this case, the surface of the cathode plate is oxidized and insulated. As a method of improving this, there is a method of increasing the voltage with time and maintaining the initial amount of current, but this is unavoidable because it consumes a large amount of power. Although there is a method of polishing the surface of the electrode plate, it takes time and labor, and the electrode metal is wasted. Further, there is a method of rotating the electrode plate and shaking off the scale adhered by the water flow, but there is a problem that anodization cannot be improved and a sufficient effect cannot be obtained.

In view of the above conventional problems, the present invention aims to provide an apparatus for treating polluted water by an electrolytic method, which enables easy and efficient removal of scale and anodized film on the surface of an electrode plate. It is what

[0005]

[Means for achieving the object]

 The features of the present invention for solving the above-mentioned conventional problems and achieving the intended purpose are that an electrolytic treatment tank for electrolytically treating polluted water is provided with a large number of anode plates and cathode plates facing each other. In a polluted water treatment device by an electrolytic method, which is equipped with a scum scraper that horizontally moves to the upper part of the electrolytic treatment tank to scrape the floating scum, a plurality of rows of the negative and anode plates are arranged in the moving direction of the scraper. The brushes for cleaning the electrode plates in each row are supported by the scraper.

[0006]

[Action]

 According to the device of the present invention, when the flocs levitate and the levitating scum accumulated on the water surface is periodically scraped by the scraper, the brush moves while rubbing the surface of each electrode plate at the same time as the action. The flocs adhering to the electrode plate surface and the oxide film formed are removed, and the electrode plate surface is maintained in a clean state.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 is an electrolytic treatment tank, which is connected to an inflow passage 2 and an outflow passage 3 at the bottoms of both ends so that a fixed flow rate of polluted water is passed through. In addition, scum storage tanks 5 and 5 are provided above the front and rear ends through dam plates 4 and 4, so that the water level in the electrolytic treatment tank 1 is slightly lower than the upper edges of these dam plates 4 and 4. Is being adjusted. Below the barrier plates 4 and 4, there are rectifying plates 6 and 6 made of punching plates, and the outside of each rectifying plate 6 and 6 serves as an introducing part 7 and an extracting part 8 and an inflow path 2, and It leads to the outflow channel 3.

The inside of the electrolytic treatment tank 1 is partitioned into a plurality of elongated cells (chambers) 10, 10 ... With a plurality of partition walls 9, 9. In each of the cells 10, 10, ..., Cathode plates 11, 11, ... And Anode plates 12, 12, ... Are attached in a row so as to face each other on the opposing wall surfaces in the width direction. The polluted water that has flowed into the cell 10 through the rectifying plate 6 from 7 passes between the electrode plates 11 and 12, is subjected to electrolytic treatment, and is discharged to the outlet part 8.

There is a scum scraper 13 on the electrolytic treatment tank 1, which is a carriage 14 that periodically reciprocates between both ends of the electrolytic treatment tank 1, and a carriage 14 hanging from the carriage on the water surface of each cell 10. It is composed of a rubber scum scraping plate 15 made of rubber, and when the carriage 14 is reciprocated, the scum a floating above the water surface is scraped horizontally to get over the weir plates 4 and 4. It is designed to be dropped into the storage tanks 5 and 5.

The scum scraping plate 15 is formed by integrally forming hanging pieces 15a, 15a that are symmetrical in the front-rear direction, and has a central portion pivotally supported by the side plate of the trolley 14, and the hanging piece on the front side in the forward direction by the cylinder 16. 15a is adapted to be selectively suspended in the electrolytic treatment tank 1.

The trolley 14 supports shafts 17, 17 ... Hanging toward the inside of each of the cells 10, 10 ..., And when the trolley is moved, these shafts 17, 17 ,. It is adapted to be rotated via the chain 19 and the sprocket 17a. A cylindrical brush 20 is attached to each of the shafts 17, and the surfaces of the bipolar plates 11 and 12 facing each other by the rotation of the shaft 17 are simultaneously cleaned by the brush 20. The brush 20 is made of an insulating material such as nylon.

In the apparatus configured as described above, the scum a, which floats above the water surface of each cell 10 and accumulates in layers, is scraped by the scum scraping plate 15 every time the scum scraping machine 13 is regularly operated. With this operation, the brush 20 moves while rotating, and cleans the surfaces of the electrode plates 11 and 12, thereby removing the adhered flocs and oxide films.

[0014]

[Effect of the device]

 As described above, in the polluted water treatment device of the present invention, the bipolar plates are arranged in a plurality of rows, the scum scraping machine is operated in the row direction, and the brush is supported on the scum scraping machine so that the scooping scraping operation is performed each time. By cleaning the surface of the plate with a brush, (1) since the electrode plate is frequently rubbed with the brush, the attached matter on the electrode plate is immediately removed. (2) Water is agitated by the movement of the brush, and the aggregation effect is enhanced. (3) Since the brush is simply attached to the normal scraping device, the device is simple and the cost is not high. (4) When aluminum is used for the anode, the surface of the electrode plate is oxidized, but since the initial oxide is soft, it can be easily removed. Therefore, insulation due to oxide can be prevented. Various effects such as are obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a polluted water treatment device of the present invention.

FIG. 2 is a vertical sectional front view of the same.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a partially cutaway plan view of a bogie portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrolysis treatment tank 2 Inflow path 3 Outflow path 4 Weir plate 5 Scum storage tank 6 Rectification plate 7 Introduction part 8 Derivation part 9 Partition wall 10 Cell 11 Cathode plate 12 Anode plate 13 Scraper 14 Cart 15 Scraping plate 15a Hanging piece 16 Cylinder 17 Axis 17a Sprocket 18 Motor 19 Chain 20 Brush

Front page continued (72) Takumi Kiuchi 1-11-25 Higashiooi, Shinagawa-ku, Tokyo Goyo Construction Co., Ltd. Technical Research Institute (72) Hiroyuki Iwamoto 1-11-25 Higashiooi, Shinagawa-ku, Tokyo Goyo Construction Co., Ltd. Technical Research Institute (72) Hiroshi Yoneya 1-11-25 Higashiooi, Shinagawa-ku, Tokyo Goyo Construction Co., Ltd. Technical Research Institute (72) Yumi Matsudaira 1-11-25 Higashiooi, Shinagawa-ku, Tokyo Goyo Construction Co., Ltd. Technical Research Center

Claims (1)

[Scope of utility model registration request] 1. A scum scraping machine for electrolytically treating polluted water, comprising a large number of anode plates and cathode plates opposed to each other, and horizontally moving to the upper part of the electrolytic treatment tank to scrape levitating scum. In the polluted water treatment apparatus by the electrolytic method provided, the negative and positive plates are installed in a plurality of rows arranged in the moving direction of the scraper, and the scraper is equipped with a brush for cleaning the electrode plates of each row. A polluted water treatment device by an electrolytic method characterized by being supported.