CN108191010B - Columnar electrostatic sewage treatment device - Google Patents

Abstract

The purpose of the present invention is to provide a columnar electrostatic sewage treatment device using high-frequency pulse electrostatic adsorption for sewage purification, so as to solve the above problems existing in the prior art. The present invention is composed of a cylindrical cylinder 1, an anode screen 6, a cathode screen 7 and a high-voltage pulse power supply 8. The upper and lower ends of the cylindrical cylinder 1 are conical, the upper end is a water outlet 3, and the lower end is provided with a sewage valve 4. The inner cavity of the inverted cone between the cylinder and the cylinder is the sludge silo 5. A water inlet valve 2 is arranged on the lower side of the cylinder above the sludge silo 5. The cathode sieves 7 and the anode sieves 6 are arranged alternately upwards. The present invention has the characteristics of good sewage treatment effect, large processing capacity, short cycle, strong sterilization performance and no chemical pollution, and can be widely used in various industrial wastewater reuse. And farmland sprinkler irrigation water purification and domestic water pretreatment.

Description

Columnar electrostatic sewage treatment device

technical field

The invention belongs to the category of sewage treatment, and relates to an industrial sewage treatment device, in particular to a columnar electrostatic sewage treatment device that utilizes high-frequency pulse electrostatic adsorption for sewage purification.

Background technique

With the continuous development of social industrialization, wastewater contains a lot of toxic substances and carcinogenic substances, such as various heavy metals, benzene, chromium-containing compounds, etc. And the recycling after purification brings great difficulties. Modern wastewater treatment methods are mainly divided into three categories: physical treatment, chemical treatment and biological treatment. The physical treatment method separates and recovers the suspended pollutants (including oil film and oil droplets) in the wastewater through physical action. The treatment units belonging to the gravity separation method include: sedimentation, floating (air flotation), etc., but the treatment effect is poor and the treatment time is long; the chemical treatment method is to separate and remove the dissolved and colloidal pollution in the wastewater through chemical reaction and mass transfer. Wastewater treatment method that converts them into harmless substances. In the chemical treatment method, the treatment unit based on the chemical reaction of adding chemicals has the disadvantage of secondary pollution to the environment; the biological treatment method uses the metabolism of microorganisms to make the wastewater in the state of solution, colloid and fine suspension. It is a wastewater treatment method that converts organic pollutants into stable and harmless substances, but the biological treatment method has certain limitations in terms of environmental requirements and sewage quality requirements in addition to the time period.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a columnar electrostatic sewage treatment device using high-frequency pulse electrostatic adsorption for sewage purification, so as to solve the above problems existing in the prior art. The present invention is composed of a cylindrical cylinder 1, an anode screen 6, a cathode screen 7 and a high-voltage pulse power supply 8. The upper and lower ends of the cylindrical cylinder 1 are conical, the upper end is a water outlet 3, and the lower end is provided with a sewage valve 4. The inner cavity of the inverted cone between the cylinder and the cylinder is the sludge silo 5. A water inlet valve 2 is arranged on the lower side of the cylinder above the sludge silo 5. The cathode sieve 7 and the anode sieve 6 are arranged alternately upwards in turn. The cathode sieve 7 is installed inside the cylindrical cylinder 1 by using an insulating plate, and is connected to the negative electrode of the high-voltage pulse power supply 8 installed outside the cylindrical cylinder 1 through a wire. The anode sieve 6 directly It is fixed on the inner wall of the cylindrical cylinder 1 and connected to the positive electrode of the high-voltage pulse power supply 8, and the cylindrical cylinder 1 is reliably grounded.

The cathode sieve 7 uses a conductive metal plate to uniformly punch the shutter structure against the direction of the water inlet valve 2;

The anode plate 6 uses a conductive metal plate to punch the shutter structure evenly in the direction of the water inlet valve 2; the cathode screen 7 and the anode screen 6 make the water flow entering the cylindrical cylinder 1 cut into a plurality of S-shaped water flows, so that the impurities in the sewage can be separated from each other. The further contact of the pole plate, the water flow being cut is constantly changing direction, and at the same time has the effect of inertia and gravity cleaning.

The low-voltage side of the high-voltage pulse power supply 9 is connected to a frequency converter, and the frequency converter outputs a high-frequency rectangular pulse waveform.

Description of drawings

Below in conjunction with accompanying drawing, the present invention is further described:

Fig. 1 is the cross-sectional structure schematic diagram of the present invention;

Icon Symbol Description:

1: Cylindrical cylinder, 2: Water inlet valve, 3: Water outlet, 4: Sewage outlet, 5: Sludge bin, 6: Anode plate, 7: Cathode plate, 8: High voltage pulse power supply.

Detailed ways

According to the drawings, the present invention is composed of a cylindrical cylinder 1, an anode screen 6, a cathode screen 7 and a high-voltage pulse power supply 8. The upper and lower ends of the cylindrical cylinder 1 are conical, the upper end is a water outlet 3, and the lower end is provided with a sewage valve 4, The inner cavity of the inverted cone between the blowdown valve 4 and the cylinder is the sludge silo 5. The water inlet valve 2 is provided on the lower side of the cylinder above the sludge silo 5. The cylinder above the water inlet valve 2 The cathode screen 7 and the anode screen 6 are alternately arranged inside the body from bottom to top. The cathode screen 7 is installed inside the cylindrical cylinder 1 by using an insulating plate, and is connected to the negative electrode of the high-voltage pulse power supply 8 installed outside the cylindrical cylinder 1 through a wire. The anode screen 6 is directly fixed on the inner wall of the cylindrical cylinder 1, and is connected to the positive electrode of the high-voltage pulse power supply 8, and the cylindrical cylinder 1 is reliably grounded.

The cathode sieve 7 uses a conductive metal plate to uniformly punch the shutter structure against the direction of the water inlet valve 2;

The anode plate 6 uses a conductive metal plate to punch the shutter structure evenly in the direction of the water inlet valve 2; the cathode screen 7 and the anode screen 6 make the water flow entering the cylindrical cylinder 1 cut into a plurality of S-shaped water flows, so that the impurities in the sewage can be separated from each other. The further contact of the pole plate, the water flow being cut is constantly changing direction, and at the same time has the effect of inertia and gravity cleaning.

The low-voltage side of the high-voltage pulse power supply 8 is connected to a frequency converter, and the frequency converter outputs a high-frequency rectangular pulse waveform; during the normal purification process, the cathode is the high-voltage second-quadrant rectangular wave voltage, and the anode is grounded; during the process of flushing the plate, the power supply is directed to the cathode screen 7 Output the medium voltage first quadrant rectangular wave voltage, the anode is grounded; close the water inlet valve 2, open the sewage outlet 4, the water flow from the water outlet 3 backflow flushes the anode screen 6 and the cathode plate 7, the sludge passes through the sludge bin 5, and is discharged by the sewage Port 4 discharges.

The invention has the characteristics of good sewage treatment effect, large treatment capacity, short cycle, strong sterilization performance and no chemical pollution, and can be widely used in various industrial wastewater reuse, farmland sprinkler irrigation water purification and domestic water pretreatment.

Claims (2)

1. The columnar electrostatic sewage treatment device is composed of a columnar cylinder (1), an anode sieve (6), a cathode sieve (7) and a high-voltage pulse power supply (8), and is characterized in that: the upper and lower ends of the columnar cylinder (1) Conical shape, the upper end is the water outlet (3), and the lower end is provided with a sewage valve (4). A water inlet valve (2) is arranged on the lower side of the cylindrical body above the bin (5), and the cathode screen (7) and the anode screen (6) are alternately arranged inside the cylindrical body above the water inlet valve (2) from bottom to top. , the cathode screen (7) is installed inside the cylindrical cylinder (1) with an insulating plate, and is connected to the negative electrode of the high-voltage pulse power supply (8) installed outside the cylindrical cylinder (1) through a wire, and the anode screen (6) is directly fixed on the The inner wall of the cylindrical cylinder (1) is connected to the positive pole of the high-voltage pulse power supply (8), and the cylindrical cylinder (1) is reliably grounded; The cathode screen (7) uses a conductive metal plate to uniformly punch the shutter structure against the direction of the water inlet valve (2); The anode screen (6) uses a conductive metal plate to punch the shutter structure evenly along the direction of the water inlet valve (2); The cathode screen (7) and the anode screen (6) make the water flow entering the cylindrical cylinder (1) cut into a plurality of S-shaped water flows, so that the impurities in the sewage are further contacted with the electrode plate, and the cut water flow is constantly changing direction It has the effect of inertia and gravity cleaning at the same time. 2. The columnar electrostatic sewage treatment device according to claim 1, characterized in that: the low-voltage side of the high-voltage pulse power supply (8) is connected to a frequency converter, and the frequency converter outputs a high-frequency rectangular pulse waveform; during a normal purification process, the cathode is a high-voltage The second quadrant rectangular wave voltage, the anode is grounded; during the process of flushing the plate, the power supply outputs the medium voltage first quadrant rectangular wave voltage to the cathode screen (7), and the anode is grounded; close the water inlet valve (2), and open the sewage outlet (4) , the water flow from the water outlet (3) reversely flushes the anode screen (6) and the cathode plate (7), and the sludge passes through the sludge bin (5) and is discharged from the sewage outlet (4).

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