Raw water purification equipment adopting electro-adsorption

Abstract

The utility model relates to the technical field of water treatment, in particular to raw water purification equipment adopting electro-adsorption. Comprising a raw water inlet pipe, a quartz sand tank, a connecting pipe I, an activated carbon tank, a connecting pipe II, a resin tank and an electro-adsorption module, a raw water main pipe is communicated with a water inlet of the raw water inlet pipe through an electromagnetic valve I, and a water outlet of the raw water inlet pipe is communicated with an inlet of the quartz sand tank; a bottom outlet of the resin tank is communicated with a purification inlet of the electro-adsorption module through a tenth electromagnetic valve, and a purification outlet of the electro-adsorption module is communicated with a water outlet pipe through a thirteenth electromagnetic valve; the electro-adsorption module comprises a plurality of pairs of electrodes, and positive electrodes and negative electrodes are arranged at intervals to form a plurality of flow channels extending from the purification inlet to the purification outlet. The high-quality circulating water is provided for a production device, the service life of the device is prolonged, and the product yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to raw water purification equipment using electric adsorption. Background Art

[0002] In oil refining and chemical companies, surface water, used as make-up water for circulating water, has inherently high levels of various indicators. To reduce make-up water usage, the concentration factor should be maximized. Chloride ions in make-up water are a natural occurrence and can damage the passivation film on the surfaces of metals and alloys such as carbon steel, stainless steel, and aluminum, causing pitting, crevice corrosion, and stress corrosion cracking.

[0003] During the operation of the circulating water system, as the concentration ratio increases, the concentration of various ions also increases. However, the increase in chloride ions has attracted particular attention and concerns from all parties. Therefore, it is urgent to reduce the chloride ions in the make-up water. There are many methods for dechlorination, each with its own advantages and disadvantages:

[0004] ① Although the ion exchange method is commonly used, the chloride ions are in an unfavorable position for exchange, the selectivity is not high, and the equipment investment and operating costs are very high.

[0005] ② The reverse osmosis method consumes a lot of electricity and is expensive.

[0006] ③ The electrodialysis equipment is compact and the water quality is good, but it consumes a lot of electricity and has high requirements for water quality.

[0007] ④ The precipitation salt method requires the addition of a precipitant, which is expensive and not widely used, and is basically limited to laboratory use.

[0008] ⑤The evaporation concentration method is suitable for systems with small water volumes.

[0009] Therefore, a better purification device for removing chloride ions is needed to make up for the shortcomings of the existing technology. Utility Model Content

[0010] The utility model provides a raw water purification device using electric adsorption, which aims to solve the problems of high cost and low efficiency of existing purification equipment through the electric adsorption technology.

[0011] In order to achieve the above purpose, the technical solution of the utility model is:

[0012] The utility model provides a raw water purification device using electric adsorption, comprising a raw water inlet pipe, a quartz sand tank, a first connecting pipe, an activated carbon tank, a second connecting pipe, a resin tank and an electric adsorption module;

[0013] The raw water main pipe is connected to the water inlet of the raw water inlet pipe through the first solenoid valve, and the water outlet of the raw water inlet pipe is connected to the inlet of the quartz sand tank; one end of the first connecting pipe is arranged near the bottom of the inner cavity of the quartz sand tank and is covered with quartz sand, and the other end is connected to the inlet of the activated carbon tank; one end of the second connecting pipe is arranged near the bottom of the inner cavity of the activated carbon tank and is covered with activated carbon, and the other end is connected to the inlet of the resin tank;

[0014] The bottom outlet of the resin tank is connected to the purification inlet of the electric adsorption module through a solenoid valve 10, and the purification outlet of the electric adsorption module is connected to the water outlet pipe through a solenoid valve 13;

[0015] The electric adsorption module includes a plurality of pairs of electrodes, wherein the positive electrodes and the negative electrodes are spaced apart to form a plurality of flow channels extending from the purification inlet to the purification outlet.

[0016] Furthermore, a second solenoid valve is provided on the raw water inlet pipe, a third solenoid valve is provided on the first connecting pipe, and a fourth solenoid valve is provided on the second connecting pipe.

[0017] Furthermore, each opening of the quartz sand tank, the activated carbon tank and the resin tank is provided with a filter screen.

[0018] Furthermore, the electric adsorption module also includes a power supply.

[0019] Furthermore, the flow channel is provided with a plurality of bends.

[0020] Furthermore, the raw water purification equipment also includes a backwash module, which includes a backwash water inlet main pipe, a backwash water outlet main pipe and a backwash drain pipe; the raw water main pipe is connected to the backwash inlet of the backwash water inlet main pipe through solenoid valve six, and is connected to the purification outlet through solenoid valve twelve; the backwash water inlet main pipe is connected to the bottom of the quartz sand tank through solenoid valve seven, is connected to the bottom of the activated carbon tank through solenoid valve eight, and is connected to the bottom of the resin tank through solenoid valve nine; the backwash water outlet main pipe is connected to the top of the side wall of the quartz sand tank, the top of the side wall of the activated carbon tank and the top of the side wall of the resin tank respectively, and the outlet end of the backwash water outlet main pipe is connected to the backwash drain pipe through solenoid valve five; a backwash outlet is provided near the purification inlet of the electric adsorption module, and the backwash outlet is connected to the backwash drain pipe through solenoid valve eleven.

[0021] The beneficial effects achieved by the utility model are:

[0022] ①Optimize water quality, provide high-quality circulating water for production equipment, extend the service life of equipment, and improve product yield.

[0023] ② The electro-adsorption technology is particularly effective in removing fluorine, chlorine, calcium and magnesium ions, preventing scaling, effectively improving the quality of raw water and ensuring the long-term efficient operation of the production equipment.

[0024] ③ No secondary pollution, no need to add any chemicals, protecting the environment.

[0025] ④ The operating cost is low. Its main energy consumption is to make the ions migrate, which can greatly save energy compared with other desalination technologies. The fundamental reason is that the principle of electrosorption purification technology is to differentially extract and separate the ions in the water from the raw water to be treated, rather than separating the water molecules from the raw water to be treated.

[0026] ② The degree of automation is high. The control system is well set up and automatic cycle operation is realized according to the water quality monitoring results, which reduces the labor intensity of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 It is a flow chart of the equipment of the present utility model.

[0029] Figure 2 It is a schematic diagram of the electric adsorption working process of the utility model.

[0030] Figure 3 It is a schematic diagram of the electric adsorption regeneration process of the utility model.

[0031] In the figure, 1. Raw water main pipe; 2. Raw water inlet pipe; 201. Water inlet; 3. Quartz sand tank; 4. Connecting pipe 1; 5. Activated carbon tank; 6. Connecting pipe 2; 7. Resin tank; 8. Backwash water main pipe; 801. Backwash inlet; 9. Electric adsorption module; 901. Purification inlet; 902. Electrode; 903. Backwash outlet; 904. Purification outlet; 10. Water outlet pipe; 11. Backwash outlet collection pipe; 12. Backwash drain pipe;

[0032] V1, solenoid valve one; V2, solenoid valve two; V3, solenoid valve three; V4, solenoid valve four; V5, solenoid valve five; V6, solenoid valve six; V7, solenoid valve seven; V8, solenoid valve eight; V9, solenoid valve nine; V10, solenoid valve ten; V11, solenoid valve eleven; V12, solenoid valve twelve; V13, solenoid valve thirteen. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] In order to optimize the quality of replenishment water and improve the circulating water index from the source, thereby more stably producing replenishment water without hazards such as sediment adhesion, corrosion perforation, and sludge clogging, the utility model provides a raw water purification device using electrosorption. The electrosorption technology has good treatment effect and is easy to regenerate, with good regeneration effect, low adsorption material consumption, and few interference substances, in order to optimize the quality of replenishment water and improve the circulating water index from the source, thereby more stably producing replenishment water without hazards such as sediment adhesion, corrosion perforation, and sludge clogging, so as to ensure that the heat exchanger is always in a good working environment, reduce unexpected shutdown and maintenance accidents, extend the service life of the heat exchange equipment of the production equipment, and reduce the discharge volume, environmental pollution, and ecological balance.

[0037] like Figures 1 to 3 As shown, the raw water purification equipment includes a raw water inlet pipe 2, a quartz sand tank 3, a connecting pipe 1 4, an activated carbon tank 5, a connecting pipe 2 6, a resin tank 7 and an electric adsorption module 9;

[0038] The raw water main pipe 1 is connected to the water inlet 201 of the raw water inlet pipe 2 through a solenoid valve 1 V1, and the water outlet of the raw water inlet pipe 2 is connected to the top inlet of the quartz sand tank 3; one end of the connecting pipe 1 4 is arranged near the bottom of the inner cavity of the quartz sand tank 3 and is covered with quartz sand, and the other end is connected to the top inlet of the activated carbon tank 5; one end of the connecting pipe 2 6 is arranged near the bottom of the inner cavity of the activated carbon tank 5 and is covered with activated carbon, and the other end is connected to the top inlet of the resin tank 7;

[0039] The bottom outlet of the resin tank 7 is connected to the purification inlet 901 of the electric adsorption module 9 through the solenoid valve 10 V10, and the purification outlet 904 of the electric adsorption module 9 is connected to the water outlet pipe 10 through the solenoid valve 13 V13. The other end of the water outlet pipe 10 is connected to the water equipment;

[0040] The electrosorption module 9 includes a plurality of pairs of electrodes 902 , with positive electrodes and negative electrodes spaced apart to form a plurality of flow channels extending from the purification inlet 901 to the purification outlet 904 , with one side of the flow channel being the positive electrode and the other side opposite to the positive electrode being the negative electrode.

[0041] Furthermore, the raw water inlet pipe 2 is provided with a second solenoid valve V2, the connecting pipe 1 4 is provided with a third solenoid valve V3, and the connecting pipe 2 6 is provided with a fourth solenoid valve V4.

[0042] Furthermore, each opening of the quartz sand tank 3, the activated carbon tank 5 and the resin tank 7 is provided with a filter screen to prevent the filter material from flowing out.

[0043] Furthermore, the electric adsorption module 9 also includes a power supply.

[0044] Furthermore, the flow channel is provided with a plurality of bends to extend the retention time of raw water in the flow channel and improve the filtering effect.

[0045] Furthermore, the raw water purification equipment also includes a backwash module, which includes a backwash water inlet main pipe 8, a backwash water outlet main pipe 11 and a backwash drain pipe 12; the raw water main pipe 1 is connected to the backwash inlet 801 of the backwash water inlet main pipe 8 through a solenoid valve 6 V6, and the raw water main pipe 1 is connected to the purification outlet 904 through a solenoid valve 12 V12; the backwash water inlet main pipe 8 is connected to the bottom of the quartz sand tank 3 through a solenoid valve 7 V7, and is connected to the bottom of the activated carbon tank 5 through a solenoid valve 8 V8, and is connected to the bottom of the activated carbon tank 5 through a solenoid valve 9 V 9 is connected to the bottom of the resin tank 7; the backwash water collection pipe 11 is respectively connected to the top of the side wall of the quartz sand tank 3, the top of the side wall of the activated carbon tank 5 and the top of the side wall of the resin tank 7, and the outlet end of the backwash water collection pipe 11 is connected to the backwash drain pipe 12 through the electromagnetic valve five V5; a backwash outlet 903 is provided near the purification inlet 901 of the electric adsorption module 9, and the backwash outlet 903 is connected to the backwash drain pipe 12 through the electromagnetic valve eleven V11, and the outlet end of the backwash drain pipe 12 is connected to the wastewater tank.

[0046] Furthermore, the raw water purification equipment also includes a control module, which is used to control the automatic operation of the raw water purification equipment. The control module adopts existing technology, and the control module includes a control chip, several control buttons and a display screen. The control chip is a PLC controller or a single-chip microcomputer; those skilled in the art can realize the automation function of the raw water purification equipment according to the description in this article without the need for creative labor, so its principles and technical details are not repeated.

[0047] Specifically, the workflow of this utility model is:

[0048] Filtration purification:

[0049] Open solenoid valves V1, V2, V3, V4, V9, V10, and V13. Raw water enters the device through raw water inlet pipe 2. It undergoes preliminary purification through quartz sand, activated carbon, and resin before entering electrosorption module 9. As the raw water flows between the cathode and anode, it is affected by the electric field, causing charged particles in the water to migrate toward the oppositely charged electrode 902, where they are adsorbed and stored within the double layer. Simultaneously, as the number of charged particles adsorbed by electrode 902 increases, they accumulate and concentrate on its surface, trapping colloidal particles, dissolved salts, and charged substances in the water on the surface of electrode 902. Ultimately, the salt and water are separated, resulting in purified / desalinated effluent, which is then delivered to the water-using equipment through outlet pipe 10. This represents normal operating status for the device.

[0050] Backwash regeneration:

[0051] After the equipment has been running for a period of time, due to the continuous accumulation of impurities on the surface of the filter material, the filter material needs to be backwashed regularly according to the water quality of the outlet water. At this time, after closing all solenoid valves, open solenoid valves V5, V6, V7, V8 and V9 to backwash the filter material respectively. When ions are stored in the double layer on the surface of electrode 902 under the action of the electric field in the electrosorption module 9, the electrode 902 reaches saturation. The power supply is removed and the positive and negative electrodes 902 are short-circuited. Due to the disappearance of the electric field, the ions stored in the double layer return to the raw water and are discharged with the water flow. The electrode 902 can also be regenerated. Open V11 and V12 to backwash the electrosorption module 9. This allows the ions stored in the double layer and the adhesives attached to the filter material to be discharged from the equipment through the backwash outlet pipe 10 together with the backwash water. The entire backwash regeneration process ends, and then the valve is switched to return to the filtration and purification stage and enter normal working state.

[0052] According to the water quality requirements of the enterprise, the equipment can be connected in series or in parallel. Series connection can improve the water quality, while parallel connection can increase the water consumption.

[0053] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A raw water purification device using electrical adsorption, characterized by: It comprises a raw water inlet pipe (2), a quartz sand tank (3), a connecting pipe 1 (4), an activated carbon tank (5), a connecting pipe 2 (6), a resin tank (7) and an electric adsorption module (9); The raw water main pipe (1) is connected to the water inlet (201) of the raw water inlet pipe (2) through the solenoid valve 1 (V1), and the water outlet of the raw water inlet pipe (2) is connected to the inlet of the quartz sand tank (3); one end of the connecting pipe 1 (4) is arranged near the bottom of the inner cavity of the quartz sand tank (3) and is covered by quartz sand, and the other end is connected to the inlet of the activated carbon tank (5); one end of the connecting pipe 2 (6) is arranged near the bottom of the inner cavity of the activated carbon tank (5) and is covered by activated carbon, and the other end is connected to the inlet of the resin tank (7); The bottom outlet of the resin tank (7) is connected to the purification inlet (901) of the electric adsorption module (9) through the electromagnetic valve 10 (V10), and the purification outlet (904) of the electric adsorption module (9) is connected to the water outlet pipe (10) through the electromagnetic valve 13 (V13); The electrosorption module (9) comprises a plurality of pairs of electrodes (902), wherein the positive electrodes and the negative electrodes are spaced apart to form a plurality of flow channels extending from the purification inlet (901) to the purification outlet (904).

2. The raw water purification device using electrical adsorption according to claim 1, characterized in that: The raw water inlet pipe (2) is provided with a second solenoid valve (V2), the connecting pipe (4) is provided with a third solenoid valve (V3), and the connecting pipe (6) is provided with a fourth solenoid valve (V4).

3. The raw water purification equipment using electrical adsorption according to claim 1, characterized in that: Each opening of the quartz sand tank (3), the activated carbon tank (5) and the resin tank (7) is provided with a filter screen.

4. The raw water purification equipment using electrical adsorption according to claim 1, characterized in that: The electric adsorption module (9) also includes a power supply.

5. The raw water purification equipment using electrical adsorption according to claim 1, characterized in that: The flow channel is provided with a plurality of bends.

6. The raw water purification equipment using electrical adsorption according to claim 1, characterized in that: The raw water purification equipment further comprises a backwash module, which comprises a backwash water inlet main pipe (8), a backwash water outlet main pipe (11) and a backwash drain pipe (12); the raw water main pipe (1) is connected to the backwash inlet (801) of the backwash water inlet main pipe (8) through a solenoid valve six (V6), and is connected to the purification outlet (904) through a solenoid valve twelve (V12); the backwash water inlet main pipe (8) is connected to the bottom of the quartz sand tank (3) through a solenoid valve seven (V7), and is connected to the bottom of the activated carbon tank (5) through a solenoid valve eight (V8), and is connected to the purification outlet (904) through a solenoid valve twelve (V12). Valve nine (V9) is connected to the bottom of the resin tank (7); the backwash water collection pipe (11) is respectively connected to the top of the side wall of the quartz sand tank (3), the top of the side wall of the activated carbon tank (5) and the top of the side wall of the resin tank (7), and the outlet end of the backwash water collection pipe (11) is connected to the backwash drain pipe (12) through the electromagnetic valve five (V5); a backwash outlet (903) is provided near the purification inlet (901) of the electric adsorption module (9), and the backwash outlet (903) is connected to the backwash drain pipe (12) through the electromagnetic valve eleven (V11).

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