JP2000334462A - Packed bed type electrochemical water treating device and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove contamination substances such as organic matters and inorganic matters in water by simultaneously applying an oxidation work, are reduction work, an electrolytic corrosion work, an electric neutralization work and a flotation work, and the like, with respect to water. SOLUTION: Granular media 4 are provided between a minus and a plus electrodes 2,3 in an electrochemical tank, and an electric field work is formed between the minus and plus electrodes 2, 3 so that electrical chemistry is utilized. Between the contamination substances in the raw water in the tank and the granular media 4, an electron transfer mechanism is generated. Fine air bubbles generated by utilizing the oxidation-reduction reaction and an aggregation work or the oxidation-reduction reaction alone, float flocks generated by the aggregation work on a water level and the flocks are removed, and simultaneously, the organic and inorganic contamination substances in the waste water are removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment apparatus and method, and more particularly to a technique for performing water treatment using an electrochemical reaction.

[0002]

2. Description of the Related Art Water is one of the important elements necessary for the survival of mankind, and is not limited to edible or everyday life bathing, washing water for dishes, etc. Drain. The water is contaminated by containing some impurities such as organic substances or inorganic substances. Since the water resources on the earth are limited, the used or contaminated water is treated, and the treated water is reused to effectively use the water resources. However, conventional filtration methods or treatment methods using chemicals or the like cannot effectively remove impurities such as organic substances and inorganic substances.

[0003]

The electric energy is converted into chemical energy by generating an electrochemical reaction by the action of an electric current. Simultaneously performs an oxidizing action, a reducing action, an electrolytic corrosion action, an electrical neutralizing action, a flotation action, and the like on water, and removes dirt such as organic and inorganic substances in the water.

[0004]

Means for Solving the Problems A granular medium is provided between a negative electrode and a positive electrode in a tank, and an electric field action is formed between the negative electrode and the positive electrode to utilize electrochemistry. An electron transfer mechanism is generated for pollutants and granular media in the raw water of this electrochemical tank. Oxidation-reduction reaction and coagulation action, and fine bubbles generated using the oxidation-reduction reaction float off the flocs generated by coagulation action on the water surface and remove them, and at the same time remove organic and inorganic pollutants in wastewater. Remove.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on electrochemical principles and relates to a method and apparatus for water treatment. An electrochemical reaction is generated by the action of electric current, the electric energy is changed to chemical energy, and water is simultaneously oxidized, reduced, eroded, neutralized, flotated, etc. A mixture of organic substances or inorganic substances.
The actions are as follows. Oxidation: utilizes two basic oxidation reactions on the positive electrode. (1) Direct oxidation: Oxygen molecules are generated by the positive electrode plate to directly promote the oxidation reaction of organic substances. (2) Indirect reaction: Using sodium chloride (NaCl) electrolysis in water, hypochlorite (OC1-) or hypochlorous acid (H
OC1−) is generated, destroying pollutants in water. Reduction action: Hydrogen generated on the negative electrode plate (H
(2) A purifying effect is achieved by utilizing the reducing action of hydrogen oxide ions (OH-) on impurities in the oxidized state. Electrolytic corrosion: Under appropriate electric field strength and current density, the positive electrode produces a metal dissociation effect. The purity of the dissociated metal ions is much higher than the metal ions contained in the commercially available coagulants, and has a stronger coagulation effect. Electro-neutralization action: neutralizes the charge of the underwater foreign matter, destroys its stability, and easily contaminates the foreign matter. Flotation: Hydrogen (H2) and oxygen (O2) generated by oxidation and reduction have very small and uniform bubble diameters, so they can effectively condense and float on the water surface and solid-liquid. Take in separation equipment.

FIG. 1 is a basic assembly drawing of the present invention, in which the correlated electrochemical action force is combined and manufactured by a single structure method, and the electrochemical machine 1 may be any type of columnar main body. The interior having a hollow shape is an internal filling section 17 which is used for installing a large amount of granular media 4 (see FIG. 5).
The granular medium 4 is a material having conductivity, for example, iron (Fe), aluminum (Al), magnesium (Mg), lead (Pb) or the like. Select a material that meets the characteristics. The perforated plates 2 are respectively provided above and below the inner filling section 17, and the perforated plates 2 are inclined downward so that the granular medium 4 and the underwater foreign substances are discharged into the granular medium outlet 1.
5 makes it easier to discharge from the electrochemical machine 1. A porous electrode plate 3 is provided at each of the entrance and exit ends of the electrochemical machine 1,
The material of the porous electrode plate 3 is, for example, an inert metal such as stainless steel or graphite. The porous electrode plate 3 is connected to the minus and plus poles of the DC current supply, respectively, and the electrochemical machine 1 provides the necessary electric field and current. Advance the correlated electrochemical action. A raw water inflow port 12 and a treated water outlet 13 are provided at the outer upper and lower ends of the electrochemical machine 1, respectively. In addition, a granular medium replenishing port 14 and a granular medium discharging port 15 are provided at appropriate positions on the electrochemical machine 1 outside the perforated plate 2. When the granular medium 4 is consumed by electrochemical erosion, or when impurities in raw water flow through the internal filling section 17 and the internal filling section 17 is clogged by filtration, the granular medium 4 is immediately discharged. Exit 1
5 to be discharged on a regular basis. At the same time, replenish the granular medium 4 after washing or regeneration from the granular medium replenishing port 14 again,
Maintain the efficiency of the electrochemical machine 1. Further, a deposit 16 is provided at the lower end of the electrochemical machine 1. The raw water is put into the electrochemical machine 1, and the relatively large impurities contained in the raw water or the impurities reduced by the action of the internal filling section 17 flow down from the perforated plate 2 below and are discharged from the sludge discharge port 16. An electric or manual valve 11 is provided at an appropriate position of the raw water inflow port 12, the sludge discharge port 16, the granular medium replenishment port 14, and the granular medium discharge port 15, respectively, and the raw water is discharged by a fully automatic or manual method. It is possible to control the input, discharge of foreign substances, or the replenishment and discharge of the granular medium 4.

The cross-sectional area of the electrochemical machine 1 is changed according to the amount of raw water to be treated, and the cross-sectional area of the electrochemical machine 1 can be increased in accordance with an increase in the amount of treatment. The length of the electrochemical machine 1 is changed in accordance with the coarse mass of the raw water, and the longer the amount of the impurities, the longer the length (see FIGS. 2, 3, and 4). The electrochemical machine 1 is a combination of series or parallel,
The serial system is used to increase the processing efficiency, and the parallel system is used to increase the processing amount. In addition, according to the needs of the series and parallel merger, the system can be mounted upright, horizontal or at any angle. All of these do not affect the processing amount and processing effect of the electrochemical machine 1 alone. As shown in FIG. 5, the apparatus of the granular medium 4 is charged in a random manner, the deposition method is formed by a medium random method, and both ends of the granular medium 4 respond to the action of a direct current electric field. It is lined up in plus and minus systems (see FIG. 6). The gaps between the granular media 4 provide gaps through which the raw water flows, and each gap constitutes the mechanism of the microbattery and drives the correlated electrochemical action. Also, because the gap is very small, the electrochemical reaction is faster and more complete. Shown in FIG. 7 is a flow diagram of the treatment system of the present invention, where raw water tank A is used to regulate the collection and flow of raw water, and raw water transport pump B sends raw water to the electrochemical system. A flow meter C and a flow control valve D are provided on the pipeline for a stable flow, and the amount of raw water entering the electrochemical system is controlled and set. Before the raw water enters the electrochemical machine 1, a rapid mixer E is provided in front of the electrochemical machine 1. Rapid mixer E adjusts the ph value so that the ph value is not too low (ph <3) to corrode the processing system. Raw water adjusted by the high-speed mixer E is put into the electrochemical machine 1 for processing.
The single electrochemical device 1 is configured by combining the parallel, series or series-parallel systems to correspond to the raw water quality and amount of various different characteristics. The electric field and current required by the electrochemical machine 1 are provided by a DC electric supply H.

After various reaction mechanisms of the raw water by the electrochemical machine 1, organic and inorganic impurities in the raw water gather to form relatively large flocs, and at the same time, by the reaction mechanism of the electrochemical machine 1. The generated microbubbles of hydrogen (H2) and oxygen (O2) adhere to flocs, and at this time, raw water enters another high-speed mixer G. The rate of the solid-liquid separation mechanism is accelerated, and a coagulant and a coagulant are selectively added into the high-speed mixer G. Granular medium 4
Is an excellent coagulant for metal ions dissociated by electrolytic corrosion. After the raw water enters the high-speed mixer G, the coagulant and the coagulant are mixed quickly, and the mixed raw water enters the flotation tank I, and flocs of many attached microbubbles float quickly by buoyancy. It floats on the water surface of the selection tank I, and is taken out and separated using the scum remover I2. Further, the scum floated by the horizontal turning of the scum remover I2 is put into the scum collecting funnel I1, and the water after treatment passes through the scum plate I3 and is sent out by the motor F to be drained or reused.
The removed scum is put into the scum storage tank J and sent to the final processing of the subsequent dewatering unit. The granular medium 4 in the electrochemical machine 1 is gradually consumed by the electrolytic erosion, and at the same time, the packed bed type apparatus causes large granular impurities of raw water to accumulate in the inner filling section 17 to cause clogging. . Therefore, using the granular medium replenishing port 14 and the granular medium discharging port 15, the discharging and replenishing operations are performed in a timely manner, so that the foreign substances deposited with the granular medium 4 can be easily accumulated without interrupting the processing operation. Can be discharged into the medium purifier K. A sieve net K1 having a certain angle is provided above the medium purifier K, and a high-pressure water supply L is provided at an upper end of the medium purifier K. A nozzle L1 is provided at the front end of the high-pressure water supply device L to purify the granular medium 4 on the sieve net K1 and other impurities. Intermediate debris and impurities are sieve net K
1 and fall into a storage position below the medium purifier K, and the reusable granular medium 4 slides into the medium storage tank M along the inclination angle of the sieve net K1, into the electrochemical machine 1 alone. Send and use again. When replenishing the exhausted granular medium 4, it is only necessary to directly charge it into the medium storage tank M. In the medium storage tank M, the medium transporter N is provided, and the reused granular medium 4 is stored. It is sent into a relatively high medium replenishment tank P. By controlling the valve 11, the granular medium 4 is timely sent into the electrochemical machine 1 using gravity, and the washing water in the medium purifier K returns to the raw water tank A and is processed again to continue. Use. Periodically clean deposited bottom debris and dirt.

[0009]

The advantages of the present invention are as follows. 1. Has the function of various wastewater (sewage) treatment. 2. Since the electrochemical machine can be changed according to the amount of raw water to be treated, it can be applied to any amount of treated water. 3. Since the electrochemical machines can be combined in a series, parallel or series-parallel manner, the practical effect of the processing can be enhanced. 4. The electrochemical machine can simultaneously perform oxidizing action, reducing action, electrolytic corrosion action, electrical neutralizing action and flotation action on water,
Miscellaneous substances such as organic substances and inorganic substances in water can be removed at the same time. 5. The electrochemical machine can perform discharge and replenishment operations in a timely manner, and there is no need to interrupt processing operations. 6. Has industrial value. 7. High practicality.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electrochemical machine according to the present invention.

FIG. 2 is a sectional view of an embodiment in which the present invention is assembled in series.

FIG. 3 is a sectional view of an embodiment in which the present invention is assembled in parallel.

FIG. 4 is a sectional view of an embodiment in which the present invention is assembled in series and parallel.

FIG. 5 is a cross-sectional view of the granular media device of the present invention.

FIG. 6 is a cross-sectional view showing formation of a micro battery in a gap between fine particulate media of the present invention.

FIG. 7 is a flowchart of the processing system of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrochemical machine 11 Valve 12 Raw water inflow port 13 Treated water outlet 14 Granular medium replenishment port 15 Granular medium discharge 16 Sludge discharge 17 Internal filling section 2 Perforated plate 3 Perforated electrode plate 4 Granular medium A Raw water tank B Raw water transport pump C Flow meter D Flow control valve E Rapid mixer F Motor G Rapid mixer H DC electric supply I Flotation tank I1 Scum collecting funnel I2 Scum remover I3 Scum plate J Scum storage tank K medium purifier K1 sieve net L high-pressure water supply L1 nozzle M medium storage tank N medium transporter P medium replenishment tank

Continuation of the front page F term (reference) 4D050 AA12 AB07 BA20 BB20 BD02 BD03 4D061 DA08 DB10 DB15 DC06 EA03 EA04 EA06 EA08 EB01 EB04 EB16 EB24 EB26

Claims (9)

[Claims] The present invention utilizes an electrochemical reaction generated by the action of an electric current, and converts electrical energy into chemical energy to oxidize, reduce, electrolytically erode, neutralize, and float water bodies. At the same time, the selection operation is performed, it is manufactured by a single structure method, the electrochemical machine alone may be the main body of any type of columnar body, the hollow inside is the inner filling section, and a large amount of granular media is installed The granular medium is a material having conductivity, and a perforated plate is provided above and below the inner filling section, and the perforated plate below is inclined. Provide a porous electrode plate,
The material of the perforated electrode plate is an inert metal, and the perforated electrode plates are connected to the minus and plus poles of the DC current supply, respectively, and the electrochemical machine alone provides the necessary electric field and current, and the length of the electrochemical machine, The volume and number of internal granular media, the difference in the characteristics of raw water to be treated, and the effect of treatment, and the magnitude of the electric field between the porous electrode plates are changed according to the characteristics of the raw water. Are provided with a raw water inflow port and a treated water outlet respectively, and a granular medium replenishing port and a granular medium discharging port are respectively provided at appropriate positions of the electrochemical machine outside the perforated plate, and further, the lower end of the electrochemical machine alone A sludge discharge port is provided in the section, and a motorized or manual valve is provided at an appropriate position of the raw water inflow port, the sludge discharge port, the granular medium replenishment port and the granular medium discharge port, respectively, fully automatic or manual. Raw water discharge by method A packed-bed type electrochemical water treatment apparatus and a method thereof, which can control the discharge of foreign substances or the replenishment and discharge of granular media, and can continuously perform water treatment without interrupting the treatment operation. . 2. The cross-sectional area of the electrochemical machine alone is changed according to the amount of raw water to be treated, and the cross-sectional area of the electrochemical machine can be increased in accordance with an increase in the treatment amount. 2. The packed-bed type electrochemical water treatment apparatus and method according to claim 1, wherein the apparatus is changed in accordance with the coarse mass of raw water. 3. The packed-bed type electrochemical water treatment apparatus according to claim 1, wherein the single electrochemical apparatus is combined in series or parallel to apply, or used in combination with series-parallel combination. Method. 4. The installation of the electrochemical machine alone or the combination type electrochemical machine is characterized in that the processing amount and the processing effect of the electrochemical machine alone are not affected by the upright type, the horizontal type or any angle type. The packed bed type electrochemical water treatment apparatus and method according to claim 1. 5. The granular medium is introduced into a single electrochemical machine in a random manner, and the granular medium is sensitive to both ends under the action of a direct current electric field, and is arranged in a plus and minus manner. The gaps between the media are small, each gap forming a microcellular mechanism to provide a relatively high current density, and the small gaps make the electrochemical reaction faster and more complete and the overall processing speed 2. The packed bed type electrochemical water treatment apparatus and method according to claim 1, wherein the temperature is fast. 6. The granular medium dissociates metal ions by electrolytic erosion, the metal ions are excellent coagulants, and the condensing action is to condense and remove flocs to remove the foreign substances. The packed-bed type electrochemical water treatment apparatus and method according to claim 1 or 5, wherein any conductive material may be used, and the shape is a regular or irregular granular form. 7. An electric or manual valve is provided at an appropriate position of the raw water inflow port, the sludge discharge port, the granular medium replenishing port and the granular medium discharge port, respectively, and the raw water is discharged by a fully automatic or manual method. 2. The method according to claim 1, wherein the input, the discharge of foreign substances, or the replenishment and discharge of granular media are controlled.
A packed bed type electrochemical water treatment apparatus and method as described above. 8. The method of claim 1, wherein the replenishing port and the rejecting port of the granular medium of the single electrochemical machine are installed or not installed, so that the processing system can be automatically, semi-automatically or manually operated. 8. A packed bed type electrochemical water treatment apparatus and method according to claim 1 or 7, characterized in that: 9. A packed-bed type electrochemical water treatment apparatus according to claim 1, wherein apparatuses such as a medium purifier, a medium storage tank, and a medium replenishment tank are installed in a timely manner in accordance with the treatment system. That way.