CN108191010B

CN108191010B - Columnar electrostatic sewage treatment device

Info

Publication number: CN108191010B
Application number: CN201810096396.2A
Authority: CN
Inventors: 许玉蕊
Original assignee: Individual
Current assignee: Liu Jinbo
Priority date: 2018-01-31
Filing date: 2018-01-31
Publication date: 2020-09-11
Anticipated expiration: 2038-01-31
Also published as: CN108191010A

Abstract

The invention aims to provide a columnar electrostatic sewage treatment device for purifying sewage by utilizing high-frequency pulse electrostatic adsorption, which solves the problems in the prior art. The invention is composed of a column-shaped cylinder 1, an anode screen 6, a cathode screen 7 and a high-voltage pulse power supply 8, wherein the upper end and the lower end of the column-shaped cylinder 1 are in a cone shape, the upper end is a water outlet 3, the lower end is provided with a blow-down valve 4, the cavity inside the inverted cone between the blow-down valve 4 and the cylinder is a sludge bin 5, the side surface of the lower part of the cylinder above the sludge bin 5 is provided with a water inlet valve 2, and the cathode screen 7 and the anode screen 6 are alternately arranged inside the cylinder above the water inlet valve 2 from bottom to top.

Description

Columnar electrostatic sewage treatment device

Technical Field

The invention belongs to the field of sewage treatment, relates to an industrial sewage treatment device, and particularly relates to a columnar electrostatic sewage treatment device for purifying sewage by utilizing high-frequency pulse electrostatic adsorption.

Background

With the continuous development of the social industrialization process, the wastewater contains a plurality of toxic substances and carcinogenic substances, such as various heavy metals, benzene, chromium-containing compounds and the like, the hardness of the wastewater is very high, and the hardness is 400-1200mg/L, which brings great difficulty for the recovery and utilization of the wastewater after the treatment and purification. Modern wastewater treatment methods are largely classified into physical treatment, chemical treatment and biological treatment. The physical treatment method is a waste water treatment method for separating and recovering undecomposed suspended pollutants (including oil films and oil droplets) from waste water by physical action, and may be classified into a gravity separation method, a centrifugal separation method, a sieve filtration and retention method, and the like. The processing units belonging to the gravity separation method comprise precipitation, floating (air flotation) and the like, but the processing effect is poor, and the processing time is long; the chemical treatment method is a wastewater treatment method for separating, removing or converting pollutants in a dissolved or colloidal state in wastewater into harmless substances through chemical reaction and mass transfer. In the chemical treatment method, a treatment unit based on chemical reaction generated by adding a medicament has the defect of generating secondary pollution to the environment; the biological treatment method is a wastewater treatment method for converting organic pollutants in a solution, colloid and fine suspension state in wastewater into stable and harmless substances through the metabolism of microorganisms, but the biological treatment method has certain limitations on the requirements of environment and the quality of wastewater except for long time use.

Disclosure of Invention

The invention aims to provide a columnar electrostatic sewage treatment device for purifying sewage by utilizing high-frequency pulse electrostatic adsorption, which solves the problems in the prior art. The invention is composed of a columnar cylinder 1, an anode sieve 6, a cathode sieve 7 and a high-voltage pulse power supply 8, wherein the upper end and the lower end of the columnar cylinder 1 are in a conical shape, the upper end is a water outlet 3, the lower end is provided with a blow-down valve 4, a sludge bin 5 is arranged in an inverted cone inner cavity between the blow-down valve 4 and the cylinder, a water inlet valve 2 is arranged on the side surface of the lower part of the cylinder above the sludge bin 5, the cathode sieve 7 and the anode sieve 6 are sequentially and alternately arranged in the cylinder above the water inlet valve 2 from bottom to top, the cathode sieve 7 is arranged in the columnar cylinder 1 by adopting an insulation board and is connected with the cathode of the high-voltage pulse power supply 8 arranged outside the columnar cylinder 1 through a lead, the anode sieve 6 is directly fixed on the inner wall of the.

The cathode screen 7 uniformly punches the shutter structure by using a conductive metal plate against the direction of the water inlet valve 2;

the anode plate 6 uniformly punches the shutter structure by using a conductive metal plate along the direction of the water inlet valve 2; the cathode sieve 7 and the anode sieve 6 enable water flow entering the cylindrical barrel 1 to be cut into a plurality of S-shaped water flows, impurities in sewage are enabled to be in further contact with the polar plate, the cut water flows change directions continuously, and meanwhile, the effect of inertial and gravity cleaning is achieved.

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

Drawings

The invention is further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic cross-sectional view of the present invention;

legends to the legends:

1: cylindrical barrel, 2: water inlet valve, 3: water outlet, 4: drain, 5: sludge bin, 6: an anode plate, 7: cathode plate, 8: high voltage pulse power supply.

Detailed Description

According to the attached drawing, the invention is composed of a columnar cylinder 1, an anode sieve 6, a cathode sieve 7 and a high-voltage pulse power supply 8, wherein the upper end and the lower end of the columnar cylinder 1 are conical, the upper end is a water outlet 3, the lower end is provided with a blow-down valve 4, a sludge bin 5 is arranged in an inverted cone inner cavity between the blow-down valve 4 and the cylinder, a water inlet valve 2 is arranged on the side surface of the lower part of the cylinder above the sludge bin 5, the cathode sieve 7 and the anode sieve 6 are sequentially and alternately arranged in the cylinder above the water inlet valve 2 from bottom to top, the cathode sieve 7 is arranged in the columnar cylinder 1 by adopting an insulating plate and is connected with the cathode of the high-voltage pulse power supply 8 arranged outside the columnar cylinder 1 through a lead, the anode sieve 6 is directly fixed on the inner wall of the.

The low-voltage side of the high-voltage pulse power supply 8 is connected with a frequency converter, and the frequency converter outputs a high-frequency rectangular pulse waveform; in the normal purification process, the cathode is high-voltage second quadrant rectangular wave voltage, and the anode is grounded; when the polar plate is washed, the power supply outputs a medium-voltage first-quadrant rectangular wave voltage to the cathode sieve 7, and the anode is grounded; and closing the water inlet valve 2, opening the sewage discharge outlet 4, flushing the anode sieve 6 and the cathode plate 7 by the reverse flow of water flow at the water outlet 3, and discharging sludge from the sewage discharge outlet 4 through the sludge bin 5.

The invention has the characteristics of good sewage treatment effect, large treatment capacity, short period, strong sterilization performance and no chemical pollution, and can be widely applied to the recycling of various industrial wastewater, the purification of farmland spray irrigation water and the pretreatment of domestic water.

Claims

1. Columnar electrostatic sewage treatment device, by column barrel (1), positive pole sieve (6), negative pole sieve (7) and high-voltage pulse power supply (8) constitute, its characterized in that: the upper end and the lower end of a columnar cylinder body (1) are conical, the upper end is a water outlet (3), the lower end is provided with a blow-down valve (4), a cavity inside an inverted cone between the blow-down valve (4) and the cylinder body is a sludge bin (5), the side surface of the lower part of the cylinder body above the sludge bin (5) is provided with a water inlet valve (2), cathode sieves (7) and anode sieves (6) are sequentially and alternately arranged inside the cylinder body above the water inlet valve (2) from bottom to top, the cathode sieves (7) are installed inside the columnar cylinder body (1) by adopting an insulating plate and are connected with the negative electrode of a high-voltage pulse power supply (8) installed outside the columnar cylinder body (1) through a lead, the anode sieves (6) are directly fixed on the inner wall of the columnar cylinder body (1) and are connected with the positive electrode;

the cathode screen (7) uniformly punches the shutter structure by using a conductive metal plate in the direction opposite to the water inlet valve (2);

the anode screen (6) uniformly punches the shutter structure by using a conductive metal plate along the direction of the water inlet valve (2);

the cathode sieve (7) and the anode sieve (6) enable water flow entering the cylindrical barrel (1) to be cut into a plurality of S-shaped water flows, impurities in sewage are enabled to be in further contact with the polar plate, the cut water flows change directions continuously, and meanwhile, the effects of inertia and gravity cleaning are achieved.

2. The columnar electrostatic sewage treatment apparatus according to claim 1, wherein: the low-voltage side of the high-voltage pulse power supply (8) is connected with a frequency converter, and the frequency converter outputs a high-frequency rectangular pulse waveform; in the normal purification process, the cathode is high-voltage second quadrant rectangular wave voltage, and the anode is grounded; when the polar plate is washed, the power supply outputs a medium-voltage first-quadrant rectangular wave voltage to the cathode sieve (7), and the anode is grounded; the water inlet valve (2) is closed, the drain outlet (4) is opened, the water flow of the water outlet (3) reversely flows to wash the anode screen (6) and the cathode plate (7), and the sludge passes through the sludge bin (5) and is discharged from the drain outlet (4).