CN210656511U

CN210656511U - Integrated wastewater treatment device

Info

Publication number: CN210656511U
Application number: CN201921251480.3U
Authority: CN
Inventors: 张国辉; 任蕊; 王玲燕; 王丽莉; 杨鸿鹰; 高小媛; 朱瑞龙
Original assignee: Shaanxi Research Design Institute of Petroleum and Chemical Industry
Current assignee: Shaanxi Yanchang Qingshan Technology Engineering Co., Ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-06-02
Anticipated expiration: 2029-08-05

Abstract

An integrated wastewater treatment device, wherein an electrocoagulation effluent weir plate is arranged in a reaction tank to divide the reaction tank into an electrocoagulation reaction cavity and an electrocatalytic reaction cavity, the side wall of the reaction tank is provided with a water inlet pipe communicated with the electrocoagulation reaction cavity, an electrocoagulation electrode group is arranged in the electrocoagulation reaction cavity, the upper part of one side of the electrocoagulation reaction cavity is divided into a slag collecting cavity by a first partition plate, a slag discharge pipe communicated with the slag collecting cavity is arranged above the side wall of the reaction tank, a slag scraper is arranged on the reaction tank above the electrocoagulation reaction cavity, the bottom of the electrocoagulation reaction cavity is provided with an electrocoagulation settling tank with a first sludge discharge pipe, the water inlet of the electrocatalytic reaction cavity is provided with a rectifying plate, the middle part of the electrocatalytic oxidation electrode group is provided with an electrocatalytic oxidation settling tank, the water outlet of the electrocatalytic oxidation settling tank is divided into an effluent water collecting cavity by a second partition plate, the side wall of, and a second blow-off pipe is arranged at the bottom of the electrocatalytic oxidation settling tank.

Description

Integrated wastewater treatment device

Technical Field

The utility model belongs to the technical field of water treatment, concretely relates to water treatment equipment.

Background

In the industries of printing and dyeing, papermaking, chemical industry, pesticide and the like, wastewater with high salt content, high COD (chemical oxygen demand), high suspended matter content and excessive heavy metal ions is produced in production. The sewage has high salt content, high organic matter concentration and low biodegradability, is difficult to treat by the conventional biochemical and physical-chemical treatment methods, and the chemical flocculation method not only has poor effect but also produces a large amount of chemical sludge.

As a new clean treatment process, compared with other water treatment processes, the electrochemical water treatment technology has the characteristics of no secondary pollution, high efficiency, good controllability and good economy, can be used in other traditional water treatment processes, has certain selectivity for removing different pollutants, and is suitable for high-salinity wastewater and high-suspended matter wastewater. Therefore, the electrochemical water treatment technology at home and abroad has incomparable advantages due to good environmental compatibility and is also called as an environment-friendly technology, has great potential in the aspect of water treatment technology, and becomes a great concern at home and abroad.

The electrocoagulation method is a competitive sewage treatment process in recent years, can be used for treating domestic sewage, electroplating wastewater, heavy metal wastewater, papermaking wastewater and oily sewage, but the existing electrocoagulation technology has the defects of easy hardening, scaling, blockage, high power consumption and low efficiency, and is greatly limited in popularization and application; the electrocatalytic oxidation method is to directly degrade pollutants in water by utilizing the high potential and high catalytic activity of an anode material, or to degrade toxic and harmful substances in water by utilizing an intermediate product (hydroxyl radical) with strong oxidizing property generated on the surface of an electrode.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a convenient operation, work efficiency height, current collection flocculation and the integrated effluent treatment plant of electrocatalytic oxidation.

The technical scheme for solving the technical problems is as follows: an electric flocculation effluent weir plate is arranged in the reaction tank to divide the reaction tank into an electric flocculation reaction chamber and an electric catalysis reaction chamber, the height of the electric flocculation effluent weir plate is lower than that of the reaction tank, a water inlet pipe communicated with the electric flocculation reaction chamber is arranged below the side wall of the reaction tank, an electric flocculation electrode group is arranged in the middle of the electric flocculation reaction chamber, a power supply of the electric flocculation electrode group is a high-frequency high-voltage pulse power supply with an automatic reversing function, a slag collecting chamber is separated from the upper part of one side of the electric flocculation reaction chamber through a first partition plate, the height of the first partition plate is smaller than that of the reaction tank so as to communicate the slag collecting chamber with the electric flocculation reaction chamber, a slag discharging pipe communicated with the slag collecting chamber is arranged above the side wall of the reaction tank, a slag scraping machine is arranged on the reaction tank above the electric flocculation reaction chamber, an electric flocculation settling tank is arranged at the bottom of the electric flocculation settling tank, the water inlet department of electro-catalytic reaction chamber is provided with the cowling panel, the middle part is provided with the electro-catalytic oxidation electrode assembly, the bottom is provided with the electro-catalytic oxidation subsider, delivery port department separates out the play water chamber that catchments through the second baffle, the height that highly is less than the reaction tank of second baffle, be provided with the outlet pipe that is linked together with play water chamber that catchments on the lateral wall of reaction tank, the direct current power supply of the power of electro-catalytic oxidation electrode assembly for having the automatic commutation function, the bottom of electro-catalytic oxidation subsider is provided with the second blow off pipe.

As a preferred technical scheme, the number of the electric flocculation electrode groups is 1-5, each electric flocculation electrode group is a clamping groove type bracket, at least 2 electric flocculation electrode plates are vertically arranged on the bracket, and the distance between every two adjacent electric flocculation electrode plates is 10-30 mm.

As a preferred technical scheme, the thickness of the electric flocculation electrode plate is 2-6 mm, and the electric flocculation electrode plate is an aluminum plate or an iron plate.

As a preferable technical scheme, the electrocatalytic oxidation electrode group is formed by installing at least 2 parallel electrocatalytic oxidation electrode plates on a clamping groove type support in an inclined mode, and the distance between every two adjacent electrocatalytic oxidation electrode plates is 10-30 mm.

As a preferable technical scheme, the thickness of the electrocatalytic oxidation electrode plate is 0.1-0.3 mm, and the electrocatalytic oxidation electrode plate is a titanium-based electrode plate plated with iridium and ruthenium.

As a preferable technical scheme, the inclination angle of the electrocatalytic oxidation electrode plate is 30-60 degrees.

The utility model has the advantages as follows:

the utility model discloses an it separates into electric flocculation reaction chamber and electro-catalysis reaction chamber with the reaction cell to be provided with electric flocculation reaction chamber in the reaction cell, and electric flocculation reaction intracavity middle part is provided with electric flocculation electrode group, and the middle part in electro-catalysis reaction chamber is provided with electro-catalysis oxidation electrode group, and current collection flocculation, air supporting, electro-catalysis oxidation, swash plate subsides high-efficient water treatment facilities as an organic whole, can high-efficiently get rid of pollutants such as suspended solid, heavy metal ion, oil, COD to sewage such as desulfurization waste water, heavy metal waste water, oily waste water, the difficult biochemistry of high salt.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples, but the present invention is not limited to the following embodiments

Example 1

In fig. 1, the integrated wastewater treatment device of this embodiment is composed of a water inlet pipe 1, a slag discharge pipe 2, a first partition plate 3, a slag scraper 4, an electrocoagulation electrode group 5, an electrocoagulation effluent weir plate 6, a rectification plate 7, an electrocatalytic oxidation electrode group 8, a second partition plate 9, a water outlet pipe 10, a second sewage discharge pipe 11, an electrocatalytic oxidation settling tank 12, a first sludge discharge pipe 13, an electrocoagulation settling tank 14, and a reaction tank 15.

An electric flocculation effluent weir plate 6 is arranged in the reaction tank 15 to divide the reaction tank 15 into an electric flocculation reaction cavity and an electric catalysis reaction cavity, the height of the electric flocculation effluent weir plate 6 is lower than that of the reaction tank 15 to enable the electric flocculation reaction cavity to be communicated with the electric catalysis reaction cavity, 3 groups of electric flocculation electrode groups 5 are arranged in the middle of the electric flocculation reaction cavity, each group of electric flocculation electrode groups 5 is a clamping groove type support, 30 electric flocculation electrode plates are vertically inserted on the clamping groove type support, the distance between every two adjacent electric flocculation electrode plates is 20mm, the thickness of each electric flocculation electrode plate is 5mm, each electric flocculation electrode plate is an aluminum plate, a power supply of each electric flocculation electrode group 5 is a high-frequency high-voltage pulse power supply with an automatic reversing function, scaling type ions such as calcium, magnesium and the like in water are prevented from scaling on the surfaces of the electrodes to cause hardened electrode plates and influence flocculation efficiency, a water inlet pipe 1 communicated with the, raw sewage enters a reaction tank 15 from a water inlet pipe 1, a slag collecting cavity is separated from the upper left side of an electrocoagulation reaction cavity through a first partition plate 3, the height of the first partition plate 3 is smaller than that of the reaction tank 15, so that the slag collecting cavity is communicated with the electrocoagulation reaction cavity, a slag discharging pipe 2 communicated with the slag collecting cavity is arranged above the side wall of the reaction tank 15 and is positioned above the electrocoagulation reaction cavity, a slag scraping machine 4 is arranged on the reaction tank 15, the slag scraping machine 4 is an installation frame and is provided with a motor and a chain wheel and chain mechanism, the power end of the motor is connected with a chain wheel of the chain wheel and chain mechanism, a chain of the chain wheel and chain mechanism is provided with a scraping plate, the motor drives the scraping plate to reciprocate left and right through the chain wheel and chain mechanism, hydrogen bubbles with the diameter of 10-30 mu m and oxygen bubbles with the diameter of 20-60 mu m generated by electrocoagulation gas have good emulsion breaking and air flotation effects, and pollutants such as suspended matters as heavy, the bottom that is located the electric flocculation reaction chamber is installed toper electric flocculation settling tank 14, and first mud pipe 13 is installed to the bottom of electric flocculation settling tank 14, and the floc that the electric flocculation produced passes through gravity deposit to the bottom, discharges mud through the mud pipe.

The rectifying plate 7 is arranged at the water inlet of the right side electrocatalytic reaction cavity of the electrocoagulation effluent weir plate 6, the sewage after the electrocoagulation treatment in the electrocoagulation reaction cavity overflows from the upper part of the electrocoagulation effluent weir plate 6 and enters the electrocatalytic reaction cavity through the lower part of the rectifying plate 7, the electrocatalytic oxidation electrode group 8 is arranged in the middle of the electrocatalytic reaction cavity, the electrocatalytic oxidation electrode group 8 is a clamping groove type bracket which is obliquely provided with 30 parallel electrocatalytic oxidation electrode plates, the inclination angle is 50 degrees, the distance between every two adjacent electrocatalytic oxidation electrode plates is 20mm, the electrocatalytic oxidation electrode plates are titanium-based electrode plates plated with iridium, the thickness is 0.2mm, the electrocatalytic oxidation electrode plates not only have the functions of COD pollutants such as electrocatalytic oxidation degradation and the like, but also have the function of inclined plate sedimentation, the incoming water of an electrocoagulation area can be sedimentated again, the power supply of the electrocatalytic oxidation electrode group 8 is a direct current power supply with the automatic reversing function, prevent scale formation type ions such as calcium magnesium of quality of water from at electrode surface scale deposit, influence catalytic efficiency, the upper right side in electrocatalysis reaction chamber separates out the play water chamber of catchmenting through second baffle 9, the height that highly is less than reaction tank 15 of second baffle 9 makes electrocatalysis reaction chamber and play water chamber of catchmenting be linked together, the sewage after the electrocatalysis treatment in the electrocatalysis reaction chamber gets into play water chamber of catchmenting by second baffle 9 top, toper electrocatalysis oxidation subsider 12 is installed to the bottom in electrocatalysis reaction chamber, second blow off pipe 11 is installed to the bottom of electrocatalysis oxidation subsider 12. The reaction tank 15, the electric flocculation effluent weir plate 6, the inlet tube 1, the electric flocculation settling tank 14, the first sludge discharge pipe 13, the first baffle 3, the rectifying plate 7, the electric catalytic oxidation settling tank 12, the second baffle 9, the slag discharge pipe 2, the second blow off pipe 11 and the outlet pipe 10 of the embodiment are insulators, so that the electric energy loss is reduced, and the treatment efficiency is improved.

Example 2

In this embodiment, install the electrocoagulation and go out the water weir plate 6 and separate into electrocoagulation reaction chamber and electrocatalysis reaction chamber with reaction tank 15 in the reaction tank 15, the mid-mounting has 2 groups of electrocoagulation electrode group 5 in the electrocoagulation reaction chamber, 60 pieces of electrocoagulation electrode board have for vertical cartridge on the draw-in groove formula support for every group of electrocoagulation electrode group 5, the interval between two adjacent electrocoagulation electrode boards is 10mm, the thickness of electrocoagulation electrode board is 3mm, the electrocoagulation electrode board is aluminum plate, the mid-mounting in electrocatalysis oxidation electrode group 8 of electrocatalysis reaction chamber, 30 pieces of mutually parallel electrocatalysis oxidation electrode board are installed for inclining on the draw-in groove formula support to electrocatalysis oxidation electrode group 8, inclination is 30, the interval between two adjacent electrocatalysis oxidation electrode boards is 20mm, the electrocatalysis oxidation electrode board is the titanium base plate that has plated the iridium, thickness is 0.1 mm. The other components and the connection relationship of the components are the same as those in embodiment 1.

Example 3

In this embodiment, install the electric flocculation play water weir plate 6 in the reaction tank 15 and separate into electric flocculation reaction chamber and electro-catalysis reaction chamber with reaction tank 15, the mid-mounting has 1 group electric flocculation electrode group 5 in the electric flocculation reaction chamber, every group electric flocculation electrode group 5 is that vertical cartridge has 2 electric flocculation electrode boards on the draw-in groove formula support, the interval between two adjacent electric flocculation electrode boards is 30mm, the thickness of electric flocculation electrode board is 6mm, the electric flocculation electrode board is iron plate, the mid-mounting in electric catalysis reaction chamber has electric catalysis oxidation electrode group 8, 2 electric catalysis oxidation electrode boards that are parallel to each other are installed to electric catalysis oxidation electrode group 8 for inclining on the draw-in groove formula support, inclination is 60 degrees, the interval between two adjacent electric catalysis oxidation electrode boards is 30mm, electric catalysis oxidation electrode board is the titanium base plate that has plated the iridium, thickness is 0.3 mm. The other components and the connection relationship of the components are the same as those in embodiment 1.

In order to verify the beneficial effects of the utility model, the utility model discloses a people has carried out following experiment:

test 1

The integrated wastewater treatment device of the embodiment 1 is used for treating the heavy metal smelting wastewater of a certain smelting plant, wherein the current density of the electric flocculation electrode group 5 is 15mA/cm²The current density of the electrocatalytic oxidation electrode plate group is 25mA/cm²The treatment effect is shown in table 1 below.

TABLE 1 treatment effect of heavy metal wastewater

Analysis itemEyes of a user	PH	Ni	Co	COD	Electrical conductivity of
						Unit of	/	mg/L	mg/L	mg/L	ms/cm
Raw water	8.05	231.0	22.0	124	80.1
						After treatment	7.89	0.02	0.05	65	80.0
Removal rate	/	99.99％	99.77％	47.58％	/

The treatment effect on heavy metals is remarkable, the removal rate on nickel is 99.99%, the removal rate on cobalt is 99.77%, the removal rate on COD is 47.58%, and the indexes completely meet the emission standard of industrial pollutants of copper, nickel and cobalt (GB 25467-2010).

Test 2

The integrated wastewater treatment device of example 2 was used to treat latex paint wastewater from a paint plant, wherein the current density of the electrocoagulation electrode set 5 was 5mA/cm²The current density of the electrocatalytic oxidation electrode plate group is 20mA/cm²The treatment effect is shown in table 2 below.

TABLE 2 treatment effect of latex paint wastewater

The heavy metal permanent treatment effect is remarkable, the turbidity removal rate is more than 99.58%, the COD removal rate is 91.79%, the suspended matter removal rate is 99.97%, the COD removal rate is 98.21%, and the effluent meets the secondary emission standard of pollutant emission Standard of municipal wastewater treatment plant (GB 18918-2016).

Claims

1. An integrated wastewater treatment device is characterized in that: an electrocoagulation effluent weir plate (6) is arranged in the reaction tank (15) to divide the reaction tank (15) into an electrocoagulation reaction chamber and an electrocatalysis reaction chamber, the height of the electrocoagulation effluent weir plate (6) is lower than that of the reaction tank (15), a water inlet pipe (1) communicated with the electrocoagulation reaction chamber is arranged below the side wall of the reaction tank (15), an electrocoagulation electrode group (5) is arranged in the middle of the electrocoagulation reaction chamber, a power supply of the electrocoagulation electrode group (5) is a high-frequency high-voltage pulse power supply with an automatic reversing function, a slag collecting chamber is divided above one side of the electrocoagulation reaction chamber by a first partition plate (3), the slag collecting chamber is communicated with the electrocoagulation reaction chamber by the height of the first partition plate (3) being smaller than that of the reaction tank (15), a slag discharge pipe (2) communicated with the slag collecting chamber is arranged above the side wall of the reaction tank (15), and a slag scraper (4) is arranged on the reaction tank (15) above the electrocoa, the bottom of the electrocoagulation-flocculation reaction cavity is provided with an electrocoagulation settling tank (14), the bottom of the electrocoagulation settling tank (14) is provided with a first sludge discharge pipe (13), a water inlet of the electrocatalysis reaction cavity is provided with a rectifying plate (7), the middle part of the electrocatalysis oxidation electrode group (8), the bottom of the electrocatalysis oxidation settling tank (12), a water outlet of the water outlet is separated from a water collecting cavity through a second clapboard (9), the height of the second clapboard (9) is smaller than that of the reaction tank (15), a water outlet pipe (10) communicated with the water collecting cavity is arranged on the side wall of the reaction tank (15), a power supply of the electrocatalysis oxidation electrode group (8) is a direct-current power supply with an automatic reversing function, and the bottom of the electrocatalysis oxidation settling tank (12) is provided with a second sewage discharge pipe (11).

2. The integrated wastewater treatment plant according to claim 1, characterized in that: the number of the electric flocculation electrode groups (5) is 1-5, each electric flocculation electrode group (5) is at least 2 electric flocculation electrode plates vertically arranged on the clamping groove type support, and the distance between every two adjacent electric flocculation electrode plates is 10-30 mm.

3. The integrated wastewater treatment plant according to claim 2, characterized in that: the thickness of the electric flocculation electrode plate is 2-6 mm, and the electric flocculation electrode plate is an aluminum plate or an iron plate.

4. The integrated wastewater treatment plant according to claim 1, characterized in that: the electrocatalytic oxidation electrode group (8) is characterized in that at least 2 parallel electrocatalytic oxidation electrode plates are obliquely arranged on the clamping groove type support, and the distance between every two adjacent electrocatalytic oxidation electrode plates is 10-30 mm.

5. The integrated wastewater treatment plant according to claim 4, characterized in that: the thickness of the electrocatalytic oxidation electrode plate is 0.1-0.3 mm, and the electrocatalytic oxidation electrode plate is a titanium-based electrode plate plated with iridium and ruthenium.

6. The integrated wastewater treatment plant according to claim 4 or 5, characterized in that: the inclination angle of the electrocatalytic oxidation electrode plate is 30-60 degrees.