Chemical agent-free sewage treatment process and ionization equipment
By designing detachable positive electrode components and sliding negative electrode components, the problems of scaling and scum accumulation during wastewater ionization treatment were solved, achieving stable operation and safety of the ionization equipment and ensuring the ionization effect.
Patent Information
- Application Number
- CN202511168699.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2025-12-12
AI Technical Summary
In existing technologies for treating wastewater by ionization, scaling and passivation are easily generated near the positive electrode, and hydrogen near the negative electrode is prone to generating bubbles, leading to scum accumulation, which affects the ionization effect and poses safety hazards.
The design incorporates a detachable positive electrode assembly and a sliding negative electrode assembly. The positive electrode assembly includes a metal filter screen and a detachable positive electrode frame, while the negative electrode assembly includes a skimmer ring and a metal float. By intermittently adjusting the water pressure and periodically replacing the components, combined with the sliding skimmer ring and metal float to remove scum, impurities and hydrogen are effectively cleaned.
It effectively avoids electrode scaling and passivation problems, ensures stable operation of ionization equipment, prevents scum accumulation, and improves ionization effect and safety.
Smart Images
Figure CN121107534A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of sewage treatment, and particularly relates to a sewage treatment process without chemical agents and an ionization device. BACKGROUND
[0002] The printing and dyeing wastewater often contains pollutants such as phosphorus and antimony. The conventional treatment of these pollutants generally uses iron salt agents and flocculants to polymerize phosphorus and antimony. However, these iron salt agents and flocculants not only polymerize phosphorus and antimony, but also produce a large amount of iron-containing sludge. Therefore, the procurement, feeding and sludge disposal of chemical agents are very troublesome and also bring high cost.
[0003] However, the ionization decontamination method has two problems. One is that the iron ions are generated at the positive electrode (anode) of the ionization, which leads to a higher concentration of iron ions near the positive electrode, and is more likely to produce iron phosphate (FePO4) precipitation and other impurities, which are easily attached to the surface of the electrode, causing electrode fouling or passivation problems.
[0004] The other problem is that although the ionization method can better remove impurities in the wastewater, it will also produce electrolytic water reaction, thereby generating hydrogen and oxygen, especially near the negative electrode (cathode), which will produce more hydrogen. These hydrogen cannot be discharged at will, otherwise it will not only pollute the environment but also pose a safety hazard.
[0005] In addition, the high content of hydrogen near the negative electrode is easy to produce bubbles attached to the surface of the flocculation, causing the flocculation to change from precipitation to dross and foam attached to the negative electrode and the exhaust port, and will accumulate more and more thick, causing the exhaust port to be blocked and the negative electrode to be blocked, affecting the ionization effect. SUMMARY
[0006] Therefore, the purpose of the present application is to provide a sewage treatment process without chemical agents and an ionization device to solve the technical problem of adverse effects caused by fouling and dross near the positive and negative electrodes during ionization treatment of wastewater in the prior art.
[0007] In order to achieve the above purpose, the present application provides a sewage treatment ionization device without chemical agents, which comprises a spliced square tube, the spliced square tube is provided with a plurality of and is fixedly connected in sequence to form a sewage conveying pipeline, and the ionization device further comprises: A positive electrode assembly and a negative electrode assembly arranged in the spliced square tube, the positive electrode assembly and the negative electrode assembly are respectively in communication with the positive and negative electrodes of an external power supply; The positive electrode assembly comprises a positive electrode frame and a metal filter screen, the positive electrode frame is detachably installed in the spliced square tube, and the positive electrode frame is fixedly connected in the positive electrode frame; The negative electrode assembly comprises a negative electrode tube and a scum scraping ring slidingly connected to the negative electrode tube, the negative electrode tube is provided with a plurality of through holes, the scum scraping ring can slide up and down to scrape off the scum attached to the negative electrode tube, and the upper end of the negative electrode tube is communicated to the gas extraction main pipe outside the spliced square tube.
[0008] Further, the spliced square tube is provided with a power switch for connecting or disconnecting the positive electrode assembly and the negative electrode assembly in the spliced square tube to the external power supply.
[0009] Further, the positive electrode frame is square and comprises three left and right lower side plates and a top cover plate, the width of the positive electrode frame is the same as the inner cavity width of the spliced square tube, the height of the left and right side plates of the positive electrode frame is equal to the inner cavity height of the spliced square tube plus the thickness of the top side wall of the spliced square tube, Further, the upper end wall of the spliced square tube is provided with a through rectangular groove, the size of the upper end cover plate of the positive electrode frame is larger than that of the rectangular groove, and the bottom of the upper end cover plate of the positive electrode frame is further provided with a sealing gasket.
[0010] Further, the three left and right lower side plates of the positive electrode frame are conductive metal plates, and the upper end cover plate of the positive electrode frame is an insulating plate, and the metal filter screen is provided with a plurality of pieces and is arranged equidistantly in the positive electrode frame.
[0011] Further, the negative electrode tube is fixedly connected in the spliced square tube, the top of the negative electrode tube is communicated to the gas extraction branch pipe through an insulating blocking piece, the gas extraction branch pipe is communicated to the gas extraction main pipe, and the gas extraction main pipe is connected to an external gas extractor.
[0012] Further, the negative electrode tube is provided with two, and the two negative electrode tubes are each provided with a scum scraping ring, and a metal floating plate is fixedly connected between the two scum scraping rings, the metal floating plate is a hollow sealing structure, the total density of the metal floating plate is greater than the density of water, and the bottom of the metal floating plate is provided with a plurality of honeycomb holes.
[0013] Further, the inner wall of the scum scraping ring is provided with a plurality of rolling balls, the rolling balls are rollingly connected to the outer wall of the negative electrode tube, there is a gap between the scum scraping ring and the outer wall of the negative electrode tube, and the bottom of the negative electrode tube is provided with a connecting piece for connecting the negative electrode tube and the scum scraping ring.
[0014] Further, the scum scraping ring is provided with a movable groove, the rolling balls are movably connected in the movable groove, and a sliding plate is further fixedly connected in the movable groove, and a return spring is connected between the sliding plate and the groove bottom of the movable groove.
[0015] A sewage treatment process using a sewage treatment ionization device, comprising: Additional electrolytic iron is added to the sewage in the spliced square tube; When sewage is supplied into the spliced square tube, the water pressure is intermittently increased or decreased; Periodic water outages occur, during which the positive electrode assembly is replaced with a new one and the removed positive electrode assembly is cleaned.
[0016] The beneficial effects of this invention are as follows: 1. By providing a detachable positive electrode assembly, a new positive electrode assembly can be installed and the removed positive electrode assembly can be cleaned during water outages. This avoids excessive accumulation of deposits and impurities on the positive electrode, preventing problems such as electrode scaling or passivation.
[0017] 2. The positive electrode assembly contains several metal filters, which can effectively prevent the flow of precipitated impurities and actively retain them. With regular replacement, it can not only effectively clean precipitated impurities, but also eliminate concerns about electrode scaling or passivation.
[0018] 3. The negative electrode assembly mainly consists of a negative electrode tube, which can act as an electrode and also as an exhaust pipe. In addition, a scum scraper ring that can slide up and down is set on the negative electrode tube to scrape away the scum and foam attached to the negative electrode tube.
[0019] 4. A metal float plate is connected to the skimmer ring. The combined weight of the skimmer ring and the metal float plate is slightly greater than its buoyancy, causing it to slide down automatically. Once the metal float plate reaches the bottom, it connects to the negative electrode via a connecting piece, becoming the negative electrode. Hydrogen gas is then generated on the metal float plate. Furthermore, the bottom of the metal float plate has several honeycomb holes, allowing the hydrogen gas and scum to accumulate within these holes, continuously increasing the buoyancy of the metal float plate and ultimately propelling it to the surface. After the metal float plate rises, it is no longer connected to the negative electrode, and as the hydrogen gas dissipates, gravity eventually exceeds buoyancy again, causing it to fall back down. This process repeats, allowing the skimmer ring to slide slowly up and down, skimming away scum and foam. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure and principle of the device of the present invention.
[0022] Figure 2 This is a schematic diagram of the structure of the spliced square tube in the device of the present invention.
[0023] Figure 3 This is a schematic diagram of the rear structure of the spliced square tube in the device of the present invention.
[0024] Figure 4 This is a schematic diagram of the positive electrode component in the device of the present invention.
[0025] Figure 5This is a schematic diagram of the negative electrode component in the device of the present invention.
[0026] Figure 6 This is a schematic diagram of the negative electrode in the device of the present invention.
[0027] Figure 7 This is a schematic diagram of the structure of the metal float and the foam scraper ring in the device of the present invention.
[0028] Figure 8 This is a schematic diagram of the internal structure of the negative electrode component in the device of the present invention.
[0029] Figure 9 for Figure 8 Enlarged view of part A in the middle.
[0030] The diagram is marked as follows: 101. Spliced square tube; 102. Main exhaust pipe; 103. Branch exhaust pipe; 104. Negative electrode tube; 105. Insulating blocking component; 106. Through hole; 107. Positive electrode frame; 108. Metal filter screen; 109. Power switch; 110. Connecting piece; 111. Metal float plate; 112. Smoke scraper ring; 113. Honeycomb hole; 114. Ball bearing; 115. Movable groove; 116. Slide plate; 117. Return spring. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.
[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0033] The first aspect of the invention, as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, since iron ions are generated at the ionized positive electrode (anode), the iron ion concentration near the ionized positive electrode is higher, making it easier to generate iron phosphate (FePO4) precipitate and other impurities. These precipitates and other impurities easily adhere to the electrode surface, causing problems such as electrode scaling or passivation. Therefore, this invention designs a sewage conveying pipeline composed of several spliced square tubes 101 connected in sequence.
[0034] The key point is that each spliced square tube 101 has a positive electrode component and a negative electrode component, which are respectively connected to the positive and negative terminals of an external power source.
[0035] The positive electrode assembly includes a positive electrode frame 107 and a metal filter 108. The positive electrode frame 107 is detachably installed inside the spliced square tube 101, and the positive electrode frame 107 is fixedly connected inside the positive electrode frame 107. The positive electrode frame 107 is square and consists of three side plates on the left, right, and lower sides and a top cover plate. The width of the positive electrode frame 107 is the same as the inner width of the spliced square tube 101, and the height of the left and right side plates of the positive electrode frame 107 is equal to the inner height of the spliced square tube 101 plus the thickness of the top side wall of the spliced square tube 101.
[0036] The removable positive electrode assembly allows for easy replacement and cleaning of the removed assembly during water outages. This prevents excessive buildup of deposits and impurities on the positive electrode, which can lead to scaling or passivation.
[0037] In addition, a through rectangular groove is provided on the upper wall of the spliced square tube 101. The size of the upper cover plate of the positive electrode frame 107 is larger than the size of the rectangular groove, and a sealing gasket is also provided at the bottom of the upper cover plate of the positive electrode frame 107. The left, right, and lower three side plates of the positive electrode frame 107 are all conductive metal plates, while the upper cover plate of the positive electrode frame 107 is an insulating material. Several metal filter screens 108 are provided and are arranged at equal intervals in the positive electrode frame 107.
[0038] The positive electrode assembly contains several metal filters 108, which can effectively prevent the flow of precipitated impurities and actively retain them. With regular replacement, it can not only effectively clean precipitated impurities, but also eliminate concerns about electrode scaling or passivation.
[0039] The second aspect of the invention, as Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, because a higher concentration of hydrogen is generated near the ionization negative electrode (cathode), this hydrogen cannot be released arbitrarily and easily forms bubbles that adhere to the surface of the flocs. This causes the flocs, which should become sediment, to become scum and foam adhering to the ionization negative electrode and the vicinity of the exhaust port, accumulating thicker and thicker, thus clogging the exhaust port and blocking the ionization negative electrode, affecting the ionization effect. Therefore, this embodiment has a special design.
[0040] Specifically, the negative electrode assembly includes a negative electrode tube 104 and a slidably connected slag-scraping ring 112 on the negative electrode tube 104. The negative electrode tube 104 is provided with several through holes 106. The slag-scraping ring 112 can slide up and down to scrape away the scum and foam attached to the negative electrode tube 104. The upper end of the negative electrode tube 104 is connected to the exhaust manifold 102 outside the spliced square tube 101.
[0041] The negative electrode 104 is fixedly connected inside the spliced square tube 101, and the top of the negative electrode 104 is connected to the exhaust branch pipe 103 through the insulating blocking member 105. The exhaust branch pipe 103 is connected to the exhaust main pipe 102, and the exhaust main pipe 102 is connected to an external exhaust fan.
[0042] The negative electrode assembly mainly consists of a negative electrode tube 104, which can act as an electrode and also as an exhaust pipe. In addition, a scum scraper ring 112 that can slide up and down is provided on the negative electrode tube 104 to scrape away the scum and foam attached to the negative electrode tube 104.
[0043] Two negative electrode tubes 104 are provided, and each negative electrode tube 104 is provided with a foam scraper ring 112. A metal float plate 111 is fixedly connected between the two foam scraper rings 112. The metal float plate 111 is a hollow sealed structure with a total density greater than that of water. The bottom of the metal float plate 111 is provided with several honeycomb holes 113.
[0044] The inner wall of the descaling ring 112 is provided with a plurality of ball bearings 114, which are rotatably connected to the outer wall of the negative electrode tube 104. There is a gap between the descaling ring 112 and the outer wall of the negative electrode tube 104. The bottom of the negative electrode tube 104 is provided with a connecting piece 110 for connecting the negative electrode tube 104 and the descaling ring 112. The descaling ring 112 is provided with a movable groove 115, in which the ball bearings 114 are movably connected. A sliding plate 116 is also fixedly connected in the movable groove 115, and a return spring 117 is connected between the sliding plate 116 and the bottom of the movable groove 115.
[0045] A metal float 111 is connected to the skimmer ring 112. The combined weight of the skimmer ring 112 and the metal float 111 is slightly greater than its buoyancy, causing it to slide down automatically. Once the metal float 111 reaches its lowest point, it connects to the negative electrode tube 104 via a connecting piece 110, becoming the negative electrode. Hydrogen gas is then generated on the metal float 111. Furthermore, the bottom of the metal float 111 has several honeycomb holes 113, allowing the hydrogen gas and scum to accumulate within these holes, continuously increasing the buoyancy of the metal float 111 and ultimately propelling it upwards. After the metal float 111 floats up, it is no longer connected to the negative electrode tube 104. As the hydrogen gas dissipates, the weight eventually exceeds the buoyancy again, causing it to fall back down. This process repeats, allowing the skimmer ring 112 to slide slowly up and down, skimming away scum and foam.
[0046] Therefore, when treating wastewater, this invention first adds electrolytic iron to the wastewater in the spliced square tube 101 when supplying wastewater. Additionally, the water pressure is intermittently increased or decreased to facilitate better cleaning of scum and foam adhering to the negative electrode tube 104. Furthermore, periodic water cut-offs are required, during which the positive electrode assembly is replaced and the removed positive electrode assembly is cleaned.
[0047] In summary, this invention features a detachable positive electrode assembly, allowing for replacement and cleaning of the removed assembly during water outages. This prevents excessive accumulation of deposits and impurities on the positive electrode, avoiding problems such as electrode scaling or passivation. The positive electrode assembly includes several metal filter screens 108, which effectively prevent the flow of deposits and impurities, actively retaining them. Combined with regular replacement, this not only effectively cleans deposits and impurities but also eliminates concerns about electrode scaling or passivation.
[0048] The negative electrode assembly mainly consists of a negative electrode tube 104, which serves as both an electrode and an exhaust pipe. A sliding skimmer ring 112 is mounted on the negative electrode tube 104 to remove scum and foam adhering to it. A metal float plate 111 is connected to the skimmer ring 112. The combined weight of the skimmer ring 112 and the metal float plate 111 is slightly greater than its buoyancy, causing it to slide down automatically. Once the metal float plate 111 reaches its lowest point, it connects to the negative electrode tube 104 via a connecting piece 110, becoming the negative electrode. Hydrogen gas is generated on the metal float plate 111. Furthermore, the bottom of the metal float plate 111 has several honeycomb holes 113. This allows the hydrogen gas and scum to accumulate in the honeycomb holes 113, continuously increasing the buoyancy of the metal float plate 111 and ultimately causing it to float upwards. After the metal float plate 111 floats up, it is no longer connected to the negative electrode tube 104. As the hydrogen gas continues to dissipate, gravity eventually exceeds buoyancy again, causing it to fall back down. This process is repeated to allow the skimming ring 112 to slide slowly up and down, scraping away the scum and foam.
[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention includes the claims being limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
[0050] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. A wastewater treatment ionization device that does not require chemical reagents, comprising a plurality of spliced square tubes (101), wherein the spliced square tubes (101) are arranged in sequence and fixedly connected to form a wastewater conveying pipeline, characterized in that, The ionization device also includes: A positive electrode assembly and a negative electrode assembly are installed inside the splicing square tube (101), and the positive electrode assembly and the negative electrode assembly are respectively connected to the positive and negative terminals of an external power source; The positive electrode assembly includes a positive electrode frame (107) and a metal filter (108). The positive electrode frame (107) is detachably installed inside the spliced square tube (101), and the positive electrode frame (107) is fixedly connected inside the positive electrode frame (107). The negative electrode assembly includes a negative electrode tube (104) and a slidably connected slag ring (112) on the negative electrode tube (104). The negative electrode tube (104) is provided with several through holes (106). The slag ring (112) can slide up and down to scrape away the scum and foam attached to the negative electrode tube (104). The upper end of the negative electrode tube (104) is connected to the exhaust manifold (102) outside the spliced square tube (101).
2. The wastewater treatment ionization device without chemical reagents according to claim 1, characterized in that, The splicing square tube (101) is equipped with a power switch (109) for connecting or disconnecting the positive and negative components on the splicing square tube (101) from the external power source.
3. The wastewater treatment ionization device without chemical reagents according to claim 1, characterized in that, The positive electrode frame (107) is square and consists of three side plates on the left, right and lower sides and a top cover plate. The width of the positive electrode frame (107) is the same as the inner cavity width of the spliced square tube (101). The height of the left and right side plates of the positive electrode frame (107) is equal to the inner cavity height of the spliced square tube (101) plus the thickness of the top side wall of the spliced square tube (101).
4. The wastewater treatment ionization device without chemical reagents according to claim 3, characterized in that, The upper wall of the spliced square tube (101) is provided with a through rectangular groove, the size of the upper cover plate of the positive electrode frame (107) is larger than the size of the rectangular groove, and the bottom of the upper cover plate of the positive electrode frame (107) is also provided with a sealing gasket.
5. A wastewater treatment ionization device without chemical reagents according to claim 1 or 3, characterized in that, The left, right and lower three side plates of the positive electrode frame (107) are all conductive metal plates, while the upper cover plate of the positive electrode frame (107) is an insulating material. The metal filter (108) is provided with several pieces and is arranged equidistantly in the positive electrode frame (107).
6. A wastewater treatment ionization device without chemical reagents according to claim 1, characterized in that, The negative electrode tube (104) is fixedly connected inside the spliced square tube (101), and the top of the negative electrode tube (104) is connected to the exhaust branch pipe (103) through the insulating blocking component (105). The exhaust branch pipe (103) is connected to the exhaust main pipe (102), and the exhaust main pipe (102) is connected to the external exhaust fan.
7. A wastewater treatment ionization device without chemical reagents according to claim 1, characterized in that, The negative electrode tube (104) is provided in two parts, and each negative electrode tube (104) is provided with a foam scraper ring (112). A metal float plate (111) is fixedly connected between the two foam scraper rings (112). The metal float plate (111) is a hollow sealed structure with a total density greater than that of water. The bottom of the metal float plate (111) is provided with several honeycomb holes (113).
8. A wastewater treatment ionization device without chemical reagents according to claim 7, characterized in that, The inner wall of the scraper ring (112) is provided with a plurality of balls (114), the balls (114) are in rolling connection with the outer wall of the negative electrode tube (104), there is a gap between the scraper ring (112) and the outer wall of the negative electrode tube (104), and the bottom of the negative electrode tube (104) is provided with a connecting piece (110) for connecting the negative electrode tube (104) and the scraper ring (112).
9. A wastewater treatment ionization device without chemical reagents according to claim 8, characterized in that, The scraper ring (112) is provided with a movable groove (115), the ball (114) is movably connected in the movable groove (115), and a sliding plate (116) is fixedly connected in the movable groove (115). A return spring (117) is connected between the sliding plate (116) and the bottom of the movable groove (115).
10. A wastewater treatment process utilizing the wastewater treatment ionization equipment described in any one of claims 1-9, characterized in that, include: Electrolytic iron is added to the wastewater in the spliced square tube (101); When supplying sewage to the spliced square tube (101), the water pressure is intermittently increased or decreased; Periodic water outages occur, during which the positive electrode assembly is replaced with a new one and the removed positive electrode assembly is cleaned.