Ion decomposition deodorization device

Abstract

The utility model relates to an ion decomposition deodorization device, which comprises a shell (10), an ion decomposition device (20) and an ion decomposition device (30), the shell (10) defines a shell cavity (1), and the shell (10) extends around a horizontal central axis (109); a hollow shaft (2) arranged parallel to the horizontal central axis (109) and supported by the housing (10); the filter screen fixing piece (4) is arranged on the lower part of the shell (10); a filter screen (3) fixed to the lower portion of the housing (10) by a filter screen fixing member (4); an ion generation unit (7); the fan (8) is arranged at the upstream of the ion generation unit (7); and the electrolysis power supply comprises a positive electrode (6) electrically connected with the hollow shaft (2) and a negative electrode (5) electrically connected with the filter screen fixing piece (4).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an ionolysis deodorization device, and more particularly to a sludge treatment system. BACKGROUND

[0002] The activated sludge process for municipal wastewater treatment uses activated sludge to adsorb pollutants in wastewater, so that the wastewater is purified. Pollutants are degraded under the physiological metabolic action of activated sludge microorganisms. In order to maintain the production balance of the wastewater treatment system, part of the activated sludge needs to be discharged. The activated sludge discharged from the wastewater treatment system is called excess sludge.

[0003] The particle size of the excess sludge is about 100 nm, the specific surface area is large, the density is close to that of water, and the excess sludge is mainly composed of activated microorganisms such as bacteria, viruses, protozoa and their own oxidized residues, and adsorbed refractory organic matter and inorganic matter.

[0004] More than 50% of the dry weight of microorganisms is protein. Protein can dissociate into cations and anions in water, and the isoelectric point of the PH value is 2-5. At this time, the degree of dissociation of cations and anions of protein is equal, and the microorganisms are electrically neutral. If the system PH value is greater than or equal to the isoelectric point of the PH value, the microorganisms will transfer protons and become negatively charged. In wastewater treatment, activated sludge can only survive normally in a neutral or alkaline state, and the system PH value is greater than the isoelectric point of the PH value of the microorganism, so the microorganism is negatively charged. The charge of the microorganism determines the charge of the excess sludge, so the excess sludge is also negatively charged.

[0005] At the same time, due to the large specific surface area of the excess sludge, the adsorption performance is high, and the non-metallic oxide and the oxygen-containing acid radical of nitrogen, sulfur, phosphorus and silicon in the wastewater are easily adsorbed by the excess sludge, so that the zeta potential of the sludge particles is more negatively charged.

[0006] Therefore, there is a need for a sludge treatment system and a sludge treatment method that can effectively treat excess sludge. CONTENT OF THE INVENTION

[0007] In one aspect, the present application provides an ionolysis deodorization device, comprising:

[0008] A housing defines a housing chamber, the housing extends around a horizontal center axis, and the housing is provided with a sludge inlet, a sludge outlet, an exhaust port, and a drain port;

[0009] A hollow shaft is arranged parallel to the horizontal center axis and supported by the housing, the hollow shaft includes a main shaft portion arranged in the housing and an extension portion extending out of the housing at one end of the hollow shaft, the main shaft portion includes a main shaft internal chamber and a main shaft air outlet, the main shaft air outlet is in fluid communication with the main shaft internal chamber and extends through the side wall of the main shaft portion;

[0010] A screen fixing member disposed on a lower portion of the housing;

[0011] A screen fixed to the lower portion of the housing by the screen fixing member;

[0012] An ion generation unit disposed within the extended portion of the hollow shaft and configured to generate ionized air into an interior chamber of the main shaft to generate positive and negative ions;

[0013] A fan in fluid communication with the interior chamber of the main shaft and disposed upstream of the ion generation unit, the fan configured to blow air at a predetermined flow rate into the interior chamber of the main shaft; and

[0014] An electrolytic power source including a positive electrode in electrical connection with the hollow shaft and a negative electrode in electrical connection with the screen fixing member;

[0015] wherein the positive and negative electrodes are configured to generate an electric field between the hollow shaft and the screen fixing member to dry the sludge; the positive electrode is configured to positively charge the hollow shaft, a portion of the negative ions generated by the ion generation unit are adsorbed and neutralized by the positive charge on the hollow shaft; and the positive ions generated by the ion generation unit enter the sludge to facilitate drying of the sludge.

[0016] In one example, the hollow shaft is rotatable about a horizontal central axis, the sludge treatment system further comprising a plurality of hollow branch pipes disposed about the main shaft portion of the hollow shaft, the hollow branch pipes including a hollow branch pipe inlet disposed at a first end of the hollow branch pipe, an end face air outlet disposed at an opposite second end of the hollow branch pipe, a hollow branch pipe interior chamber extending between the branch pipe inlet and the end face air outlet, and a plurality of branch pipe apertures disposed on a sidewall of the hollow branch pipe and in fluid communication with the branch pipe interior chamber, the branch pipe interior chamber being in fluid communication with the interior chamber of the main shaft via the branch pipe inlet and the main shaft air outlet.

[0017] In one example, the hollow branch pipe further includes a vane disposed on an outer surface of the hollow branch pipe.

[0018] In one example, the vane extends along an axis of the hollow branch pipe.

[0019] In one example, the plurality of hollow branch pipes are arranged in a plurality of rows along the main shaft portion of the hollow shaft, each row including a set of hollow branch pipes spaced apart about a corresponding outer circumference of the main shaft portion of the hollow shaft.

[0020] In one example, the vane extends obliquely relative to an axis of the hollow branch pipe.

[0021] In one example, the plurality of hollow branch pipes are arranged in a helical path spaced apart on an outer surface of the main shaft portion of the hollow shaft.

[0022] In one example, the ion generation unit comprises a high-voltage positive electrode ring and a high-voltage negative electrode ring.

[0023] In one example, the housing is cylindrical, comprising a cylindrical side wall extending around a horizontal central axis, a first circular end plate proximal to the ion generation unit, and a second circular end plate distal to the ion generation unit, the sludge inlet being provided at a top of the cylindrical side wall of the housing, the sludge outlet being provided at a bottom of the second circular end plate of the housing, the exhaust port being provided at a top of the cylindrical side wall of the housing, and the water outlet being provided at a bottom of the cylindrical side wall of the housing.

[0024] In one example, the housing is composed of a lower portion of a semi-circular cross section and an upper portion of a rectangular cross section, comprising a lower semi-cylindrical side wall extending around a horizontal central axis, a pair of upper side walls extending vertically upward from top ends of the lower semi-cylindrical side wall, a top plate extending between the pair of upper side walls, a first end plate proximal to the ion generation unit, and a second end plate distal to the ion generation unit, the sludge inlet being provided at the top plate of the housing, the sludge outlet being provided at a bottom of the second end plate of the housing, the exhaust port being provided at the top plate of the housing, and the water outlet being provided at a bottom of the lower semi-cylindrical side wall of the housing.

[0025] In one example, the filter mesh fixing member is made of metal and is mounted to the housing via an insulating bracket.

[0026] In one example, the filter mesh fixing member is made of metal and is provided with an insulating member on an outer surface.

[0027] In another aspect, the present application provides a sludge treatment method for drying sludge using the sludge treatment system described above, comprising:

[0028] introducing the sludge to be dried into the housing chamber via the sludge inlet;

[0029] turning on the electrolysis power supply, starting the ion generation unit and the fan, so that the ion generation unit generates cations and anions, the hollow shaft is positively charged, a portion of the anions generated by the ion generation unit are adsorbed and neutralized by the positive charge on the hollow shaft; the cations generated by the ion generation unit enter the sludge to facilitate drying of the sludge; and

[0030] after the sludge drying is completed, the dried sludge is discharged via the sludge outlet.

[0031] The above-mentioned features and advantages of the present disclosure, as well as other features and attendant advantages, will be readily apparent from the following detailed description of illustrative examples and modes for carrying out the present disclosure, when taken in connection with the accompanying drawings and the appended claims. Moreover, the present disclosure expressly includes combinations and sub-combinations of the elements and features set forth above and below.

[0032] By means of the sludge treatment system according to the utility model, equivalent ions, i.e. cations and anions, are generated by the ion generation unit, wherein a part of the anions are adsorbed by the positive pole of the electrolysis power supply and the hollow shaft, and the cations continue to pass into the cavity of the shell and react with the sludge dispersed by the stirring of the branch pipes and the blades, so as to degrade the double electric layer of the sludge, dehydrate the sludge and discharge the sludge after filtering water by the filter screen.

[0033] By means of the sludge treatment system according to the utility model, the hollow shaft is connected to the positive pole of the electrolysis power supply, and the filter screen fixing member is connected to the negative pole of the electrolysis power supply, so that the sludge is placed in the stirring electric field, thereby the direct current contacts the sludge body and accelerates the degradation of the double electric layer of the sludge.

[0034] By means of the sludge treatment system according to the utility model, since the sludge is an organic matter, the direct current flowing through the sludge will generate a heat effect, so as to heat the sludge itself, and the heated sludge is fully exposed to the air by the stirring and crushing of the branch pipes and the blades, and is further decomposed by the action of the cations to achieve the drying effect.

[0035] By means of the sludge treatment system according to the utility model, since the sludge is dispersed and heated at the same time, the odor in the cavity of the shell is aggravated, and the remaining anions have the effect of inhibiting odor and removing odor. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic diagram of a double electric layer structure formed by negatively charged residual sludge particles.

[0037] Figure 2 is a schematic diagram of a system of negatively charged residual sludge particles.

[0038] Figure 3 is a schematic diagram of a sludge treatment system according to one example of the utility model.

[0039] Figure 4 is a schematic perspective view of a hollow branch pipe of a sludge treatment system according to one example of the utility model.

[0040] Figure 5 is a schematic plan view of a hollow branch pipe of a sludge treatment system according to one example of the utility model.

[0041] Figure 6 is a schematic side view cross-sectional view of a shell of a sludge treatment system according to one example of the utility model.

[0042] Figure 7 is a schematic side view cross-sectional view of a shell of a sludge treatment system according to another example of the utility model.

[0043] Figure 8is a schematic diagram of the ion generation unit of a sludge treatment system according to one example of the present utility model.

[0044] Figure 9 is a schematic perspective view of the hollow shaft of a sludge treatment system according to one example of the present utility model.

[0045] Figure 10 is a schematic perspective view of the hollow shaft of a sludge treatment system according to another example of the present utility model.

[0046] Figure 11 is Figure 10 is a schematic diagram of the vanes on the hollow shaft, with the hollow struts omitted to better show the layout of the vanes.

[0047] Figure 12 is Figure 10 is a schematic diagram of the hollow struts and vanes on the hollow shaft, showing the angle of inclination of the vanes.

[0048] Figure 13 is a schematic side view cross-section of a sludge treatment system according to another example of the present utility model, showing a double hollow shaft / double helix configuration. DETAILED DESCRIPTION

[0049] Reference is made to the accompanying drawings in which like reference numerals refer to like elements. Figure 1 is a schematic diagram of the double electric layer structure formed by the negatively charged residual sludge particles 301. Figure 2 is a schematic diagram of the system of negatively charged residual sludge particles. As water is a polar molecule, it forms a double electric layer structure of an adsorption layer 302 and a diffusion layer 303 with the negatively charged residual sludge particles. The residual sludge system thus forms a highly dispersed double electric layer colloidal structure system of an adsorption layer 302 and a diffusion layer 303 with the residual sludge particles 301 as the dispersed phase and water as the continuous phase. Figure 2The system state of the residual sludge with water content between 94% and 97% after concentration by natural gravity sedimentation is shown, and the double-electric-layer water state is complete and the free water is less. Due to the small size of the residual sludge particles, the small and complex channel gap after bridging, the large water passing specific resistance, and the close density of the residual sludge and water, the physical sedimentation separation efficiency is low. In addition, the residual sludge has high water content, and the double-electric-layer colloid stable structure of the adsorption layer 302 and the diffusion layer 303 between the residual sludge particles 301 and water due to the electrostatic attraction, resulting in difficulty in sludge drying. With the aid of the sludge treatment system according to the utility model, on the one hand, the cations generated by the ion generating unit lead to the inside of the shell chamber, and react with the sludge dispersed by the branch pipe and the blade, so as to degrade the double-electric-layer of the sludge; on the other hand, the hollow shaft is connected to the positive electrode of the electrolysis power supply, and the filter screen fixing piece is connected to the negative electrode of the electrolysis power supply, so that the sludge is placed in the stirring electric field, so that the direct current current contacts the sludge body, and the degradation of the double-electric-layer of the sludge is accelerated. It should be understood that in the utility model, the term "sludge" covers any solid precipitated matter generated in the sewage treatment process, such as but not limited to waste from landfills, fertilizer plants, chemical plants, etc.

[0050] Figure 3 is a schematic view of a sludge treatment system according to an example of the utility model. The sludge treatment system comprises a shell 10, a hollow shaft 2, a filter screen fixing piece 4 arranged on the lower part of the shell 10, a filter screen 3 fixed to the lower part of the shell 10 by the filter screen fixing piece 4, an ion generating unit 7, a fan 8 and an electrolysis power supply. It should be understood that the sludge treatment system can comprise any other additional components, such as a sludge feeding cylinder, etc. according to the needs without deviating from the scope of the utility model. In Figure 3 the example, the filter screen 3 is arranged below the filter screen fixing piece 4, so that the filter screen fixing piece 4 electrically connected with the negative electrode 5 of the electrolysis power supply is in better contact with the sludge, facilitating the degradation of the double-electric-layer of the sludge. It should be understood that the filter screen 3 can also be arranged above the filter screen fixing piece 4, as shown in Figure 6 and Figure 7 without deviating from the scope of the utility model.

[0051] According to an example, the shell 10 defines a shell chamber 1, and the shell 10 extends around a horizontal center axis 109. The shell 10 is provided with a sludge inlet 101, a sludge outlet 103, an exhaust port 102 and a drain port 104. A sludge feeding cylinder can be arranged on the sludge inlet 101 so as to better introduce the sludge.

[0052] According to one example, the hollow shaft 2 is disposed parallel to the horizontal center axis 109 and is supported by the housing 10, the hollow shaft 2 includes a main shaft portion 210 disposed within the housing 10 and an extension portion 211 extending out of the housing 10 at one end of the hollow shaft 2, the main shaft portion 210 includes a main shaft interior chamber 201 and a main shaft air outlet 209 in fluid communication with the main shaft interior chamber 201 and extending through a sidewall of the main shaft portion 210. In Figure 6 and 7 In one example, the sludge treatment system includes one hollow shaft 2 and the hollow shaft 2 is disposed along the horizontal center axis 109. It should be understood that the sludge treatment system can include multiple hollow shafts 2 disposed side by side, as shown in Figure 13

[0053] According to one example, the ion generation unit 7 is disposed within the extension portion 211 of the hollow shaft 2 and is configured to generate ions of air into the main shaft interior chamber 201 to generate positive ions and negative ions. It should be understood that the ion generation unit 7 can also be disposed within the main shaft portion 210 without departing from the scope of the present application.

[0054] According to one example, the fan 8 is in fluid communication with the main shaft interior chamber 201 and is disposed upstream of the ion generation unit 7, the fan 8 is configured to blow air at a predetermined flow rate into the main shaft interior chamber 201.

[0055] According to one example, the electrolysis power source includes a positive electrode 6 electrically connected to the hollow shaft 2 and a negative electrode 5 electrically connected to the filter screen fixing member 4. The positive electrode 6 and the negative electrode 5 are configured to generate an electric field between the hollow shaft 2 and the filter screen fixing member 4 to dry the sludge; the positive electrode 6 is configured to make the hollow shaft 2 positively charged, a portion of the negative ions generated by the ion generation unit 7 are adsorbed and neutralized by the positive charge on the hollow shaft 2; the positive ions generated by the ion generation unit 7 enter the sludge to facilitate drying of the sludge. It should be understood that in the present application, the electrolysis power source refers to a power source for generating an electric field between the hollow shaft 2 and the filter screen fixing member 4. Other electrical components of the sludge treatment system, such as the ion generation unit 7, the fan 8, the driving device of the hollow shaft 2, etc. can also include a power source.

[0056] ​According to one example, the hollow shaft 2 is rotatable about a horizontal central axis 109. The sludge treatment system further comprises a plurality of hollow branches 202 disposed about a main shaft portion 210 of the hollow shaft 2. The hollow branches 202 can be fixed to the hollow shaft 2 by any suitable means, such as but not limited to welding, etc. It should be appreciated that the hollow branches 202 can also be integrally formed with the hollow shaft 2 without departing from the scope of the present invention. It should also be appreciated that the sludge treatment system can also not comprise the hollow branches 202, but instead comprise vanes disposed about the main shaft portion 210 of the hollow shaft 2 for agitating the sludge.

[0057] Figure 4 is a schematic perspective view of a hollow branch 202 of a sludge treatment system according to one example of the present invention. Figure 5 is a schematic plan view of a hollow branch 202 of a sludge treatment system according to one example of the present invention. As Figure 4 shown in FIG. 2, the hollow branch 202 comprises a hollow branch inlet 206 disposed at a first end of the hollow branch 202, an end face outlet 204 disposed at an opposite second end of the hollow branch 202, a hollow branch interior chamber 207 extending between the branch inlet 206 and the end face outlet 204, and a plurality of branch apertures 203 disposed on a sidewall of the hollow branch 202 and in fluid communication with the branch interior chamber 207. The branch inlet 206 coincides with the main shaft outlet 209, such that the branch interior chamber 207 is in fluid communication with the main shaft interior chamber 201 via the branch inlet 206 and the main shaft outlet 209.

[0058] According to one example, the hollow branch 202 further comprises a vane 205 disposed on an outer surface of the hollow branch 202. As Figure 4 shown in FIG. 3, the vane 205 extends along an axis of the hollow branch 202.

[0059] As Figure 3 shown in FIG. 4, the plurality of hollow branches 202 are arranged in a plurality of rows along the main shaft portion 210 of the hollow shaft 2, each row comprising a set of hollow branches 202 spaced apart about a corresponding outer circumference 212 of the main shaft portion 210 of the hollow shaft 2. The hollow branches 202 can be equally spaced apart about the corresponding outer circumference 212 of the main shaft portion 210 of the hollow shaft 2. It should be appreciated that the hollow branches 202 can also be spaced apart at different distances about the corresponding outer circumference 212 of the main shaft portion 210 of the hollow shaft 2 without departing from the scope of the present invention. Figure 9 is a schematic perspective view of a hollow shaft 2 of a sludge treatment system according to one example of the present invention. For clarity, in Figure 9The hollow struts 202 and vanes 205 are removed for clarity. It will be appreciated that, since the hollow struts 202 strut inlets 206 coincide with the main shaft outlets 209 of the hollow shaft 2, the hollow struts 202 are arranged in a helical path on the outer surface of the main shaft portion 210 of the hollow shaft 2. Figure 9 In the example shown, the position of the hollow struts 202 corresponds to the main shaft outlets 209 of the hollow shaft 2. According to one example, the hollow struts 202 are arranged in a helical path on the outer surface of the main shaft portion 210 of the hollow shaft 2. Figure 5 As shown in the example, each vane 205 is arranged at an angle between 20 degrees and 60 degrees relative to a plane 206 perpendicular to the hollow shaft 2. Preferably, each vane 205 is arranged at an angle of 45 degrees relative to the plane 206 perpendicular to the hollow shaft 2. It will be appreciated that the vanes 205 can be arranged at any other suitable angle relative to the plane 206 perpendicular to the hollow shaft 2 without departing from the scope of the present application. Furthermore, the angle of each vane 205 relative to the plane 206 can be the same or different without departing from the scope of the present application.

[0060] According to one example, the vanes 205 extend obliquely relative to the axis of the hollow struts 202. The plurality of hollow struts 202 are arranged in a helical path on the outer surface of the main shaft portion 210 of the hollow shaft 2. Figure 10 is a schematic perspective view of a hollow shaft 2 of a sludge treatment system according to another example of the present application. The hollow struts 202 and vanes 205 are removed for clarity. It will be appreciated that, since the hollow struts 202 strut inlets 206 coincide with the main shaft outlets 209 of the hollow shaft 2, the hollow struts 202 are arranged in a helical path on the outer surface of the main shaft portion 210 of the hollow shaft 2. Figure 10 In the example shown, the position of the hollow struts 202 corresponds to the main shaft outlets 209 of the hollow shaft 2. According to one example, the hollow struts 202 are arranged in a helical path on the outer surface of the main shaft portion 210 of the hollow shaft 2. Figure 10 In the example shown, the position of the hollow struts 202 corresponds to the main shaft outlets 209 of the hollow shaft 2. According to one example, the hollow struts 202 are arranged in a helical path on the outer surface of the main shaft portion 210 of the hollow shaft 2.

[0061] Figure 11 is a schematic view of the vanes 205 on the hollow shaft 2 shown in Figure 10 As shown in the example, each vane 205 is arranged at an angle between 20 degrees and 60 degrees relative to a plane 206 perpendicular to the hollow shaft 2. Preferably, each vane 205 is arranged at an angle of 45 degrees relative to the plane 206 perpendicular to the hollow shaft 2. It will be appreciated that the vanes 205 can be arranged at any other suitable angle relative to the plane 206 perpendicular to the hollow shaft 2 without departing from the scope of the present application. Furthermore, the angle of each vane 205 relative to the plane 206 can be the same or different without departing from the scope of the present application. Figure 12 is a schematic view of the vanes 205 on the hollow shaft 2 shown in Figure 10 As shown in the example, each vane 205 is arranged at an angle between 20 degrees and 60 degrees relative to a plane 206 perpendicular to the hollow shaft 2. Preferably, each vane 205 is arranged at an angle of 45 degrees relative to the plane 206 perpendicular to the hollow shaft 2. It will be appreciated that the vanes 205 can be arranged at any other suitable angle relative to the plane 206 perpendicular to the hollow shaft 2 without departing from the scope of the present application. Furthermore, the angle of each vane 205 relative to the plane 206 can be the same or different without departing from the scope of the present application. Figure 11 As shown in the example, each vane 205 is arranged at an angle between 20 degrees and 60 degrees relative to a plane 206 perpendicular to the hollow shaft 2. Preferably, each vane 205 is arranged at an angle of 45 degrees relative to the plane 206 perpendicular to the hollow shaft 2. It will be appreciated that the vanes 205 can be arranged at any other suitable angle relative to the plane 206 perpendicular to the hollow shaft 2 without departing from the scope of the present application. Furthermore, the angle of each vane 205 relative to the plane 206 can be the same or different without departing from the scope of the present application. Figure 12As shown, tan β is equal to the circumferential distance a of the adjacent hollow struts 202 / the axial distance d2 of the adjacent hollow struts 202. It should be understood that the circumferential distance a between adjacent vanes 205 can be different, and the axial distance d2 between adjacent vanes 205 can be different, as long as tan β is equal to the circumferential distance a of the adjacent hollow struts 202 / the axial distance d2 of the adjacent hollow struts 202.

[0062] Figure 6 is a schematic side cross-sectional view of a housing 10 of a sludge treatment system according to one example of the present utility model. The housing 10 is cylindrical, comprising a cylindrical side wall 113 extending around a horizontal central axis 109, a first circular end plate (not shown) proximal to the ion generation unit 7 and a second circular end plate (not shown) distal to the ion generation unit 7. A sludge inlet 101 is provided at the top of the cylindrical side wall 113 of the housing 10, a sludge outlet 103 is provided at the bottom of the second circular end plate of the housing 10, an exhaust port 102 is provided at the top of the cylindrical side wall 113 of the housing 10, and a water drain port 104 is provided at the bottom of the cylindrical side wall 113 of the housing 10. The screen fixing member 4 and the screen 3 cover part or all of the lower half of the cylindrical side wall 113 of the housing 10.

[0063] Figure 7 is a schematic side cross-sectional view of a housing 10 of a sludge treatment system according to another example of the present utility model. The housing 10 is composed of a lower part of a semi-circular cross-section and an upper part of a rectangular cross-section, comprising a lower semi-cylindrical side wall 110 extending around a horizontal central axis 109, a pair of upper side walls 111 extending vertically upward from the top end of the lower semi-cylindrical side wall, a top plate 112 extending between the pair of upper side walls 111, a first end plate (not shown) proximal to the ion generation unit 7 and a second end plate (not shown) distal to the ion generation unit 7. A sludge inlet 101 is provided at the top plate 112 of the housing 10, a sludge outlet 103 is provided at the bottom of the second end plate of the housing 10, an exhaust port 102 is provided at the top plate 112 of the housing 10, and a water drain port 104 is provided at the bottom of the lower semi-cylindrical side wall 110 of the housing 10. The screen fixing member 4 and the screen 3 cover part or all of the lower semi-cylindrical side wall 110 of the housing 10. Figure 13is a schematic side cross-sectional view of a sludge treatment system according to another example of the present application, showing a double hollow shaft / double spiral configuration. The housing 10 has a rectangular cross-section, including a bottom plate 114, a pair of upper side walls 111 extending vertically upward from the bottom plate 114, a top plate 112 extending between the pair of upper side walls 111, a first end plate proximal to the ion generation unit 7 and a second end plate distal to the ion generation unit 7, a sludge inlet 101 disposed at the top plate 112 of the housing 10 proximal to the first end plate, a sludge outlet 103 disposed at the bottom of the second end plate of the housing 10, an exhaust port 102 disposed at the top plate 112 of the housing 10, and a drain port 104 disposed at the bottom plate 114 of the housing 10. Two hollow shafts 2 are arranged side by side within the housing 10. A screen retainer 4 and a screen 3 cover at least the bottom plate 114 of the housing 10. It should be understood that the sludge treatment system can include more than two hollow shafts 2 without departing from the scope of the present application. It should also be understood that the cross-sectional shape of the housing 10 shown is merely an example, and any other suitable cross-sectional shape of the housing 10 can be employed as desired by those skilled in the art, for example, the bottom plate 114 in Figure 6 、 Figure 7 、 Figure 13 The cross-sectional shape of the housing 10 shown is merely an example, and any other suitable cross-sectional shape of the housing 10 can be employed as desired by those skilled in the art, for example, the bottom plate 114 in Figure 13 may be provided in a double semi-circular shape or other shape without departing from the scope of the present application.

[0064] According to one example, the screen retainer 4 and the screen 3 are provided in a lower portion of the housing 10. The screen retainer 4 and the screen 3 can cover the entire lower portion of the housing 10, or can cover a portion of the lower portion of the housing 10, as shown in Figure 6 and 7 The screen 3 is provided with a mesh size such that water can pass through, but sludge cannot pass through. The screen retainer 4 is also provided in the form of a screen, and extends the same range as the screen 3 so as to better support the screen 3. The screen retainer 4 is provided with a mesh size that is significantly larger than the mesh size of the screen 3 so as to reduce the resistance of the water flow. According to one example, the screen retainer 4 is made of metal, and is mounted to the housing 10 via an insulating stand. According to another example, the screen retainer 4 is made of metal, and is provided with an insulating member on an outer surface.

[0065] Figure 8It is a schematic view of an ion generating unit of a sludge treatment system according to an example of the utility model. The ion generating unit 7 comprises a high-voltage positive ring 701 and a high-voltage negative ring 702. The spacing d between the high-voltage positive ring 701 and the high-voltage negative ring 702 can be selected as required. When high voltage is applied to the high-voltage positive ring 701 and the high-voltage negative ring 702, air molecules will be ionized to generate positive ions and negative ions. If the spacing d is too close, the high-voltage positive ring 701 and the high-voltage negative ring 702 will produce an electric arc by breaking through the air, affecting the formation of ions; if the spacing d is too far, the ionization effect is reduced, and the efficiency of generating ions is greatly reduced.

[0066] The utility model also provides a kind of sludge treatment method for drying sludge using according to sludge treatment system, comprising: the sludge to be dried is introduced into shell cavity 1 by sludge inlet 101;Connect electrolytic power supply, start ion generating unit 7 and fan 8, and drive hollow shaft 2 rotation, so that ion generating unit 7 generates cation and anion, hollow shaft 2 is positively charged, part of anion generated by ion generating unit 7 is adsorbed by the positive charge on hollow shaft 2 and neutralized;Cation generated by ion generating unit 7 enters sludge, to facilitate drying sludge;And after sludge drying is completed, dried sludge is discharged by sludge outlet 103.

[0067] In addition, the driving device of the hollow shaft 2 can also be started to rotate the hollow shaft 2, drive the hollow branch pipe 202 and the blade 205 to rotate, and have the effects of stirring, dispersing, electrifying and pushing the sludge, so that the negative ions and the cations in the sludge are fully contacted and reacted to promote the agglomeration of the sludge, remove heavy metals, reduce the stability of colloidal particles, and improve the dewatering effect.

[0068] By means of the sludge treatment system according to the utility model, equivalent ions, i.e. cations and anions, are generated by the ion generating unit, part of the anions are adsorbed by the positive electrode of the electrolytic power supply and the hollow shaft, and the cations continue to pass into the shell cavity 1 to react with the sludge stirred and dispersed by the blade 205, thereby degrading the double electric layer of the sludge, dewatering the sludge and filtering out water through the filter screen 3.

[0069] By means of the sludge treatment system according to the utility model, the hollow shaft 2 is connected to the positive electrode 6 of the electrolytic power supply, and the filter screen fixing member 4 is connected to the negative electrode 5 of the electrolytic power supply, so that the sludge is placed in a stirring electric field, thereby the direct current contacts the sludge body and accelerates the degradation of the double electric layer of the sludge.

[0070] By means of the sludge treatment system according to the utility model, since the sludge is an organic matter, the direct current flowing through the sludge will generate a heat effect, thereby heating the sludge itself, and the heated sludge is fully exposed to the air by the stirring and crushing of the branch pipe 202 and the blade 205, and then further decomposed by the action of the cations to achieve the drying effect.

[0071] In summary, without adding chemical agents, the cations generated by the ion generating unit contact and fully react with the negative charges, organic matter, heavy metals, etc. in the sludge, thereby removing heavy metals and dewatering efficiently. Some of the anions generated remove harmful gases by reacting with the toxic gases, so that the finished sludge achieves the effects of dewatering, no toxicity, no odor, etc.

[0072] The described embodiments of the disclosure are intended to be used as non-limiting examples, and other embodiments can take various and alternative forms. In addition, the drawings are not necessarily to scale and can present some simplified representations of various features of the disclosure, including, for example, specific dimensions, directions, positions, and shapes. Details associated with such features will be determined in part by the intended application and use environment of the described embodiments.

[0073] For the purposes of this description, unless specifically excluded, the use of singular terms will include plural and vice versa, and the terms "and" and "or" shall both be both conjunctive and disjunctive, and the terms "including", "containing", "having" and the like shall mean "including, but not limited to". In addition, approximating language, such as, "about", "substantially", "approximately", "generally", "close" and the like, can be used herein to mean "within 0-5% of" or "within a range that is acceptable for the intended use" or "within an acceptable manufacturing tolerance" or any like meaning as is understood in the art. As used herein, a component "configured to" perform a specified function is capable of performing the specified function without further modification, not merely potentially capable of performing the specified function after further modification. In other words, the described hardware, when explicitly configured to perform a specified function, is specifically selected, created, implemented, utilized, programmed and / or designed for the purpose of performing the specified function. Furthermore, the use of numerals such as first, second and third does not necessarily mean an ordinal sequence meaning, but can simply be used to distinguish between multiple instances of an action or structure.

[0074] The detailed description and accompanying drawings or diagrams provide support for and describe the present teachings, but the scope of the present teachings is limited only by the claims. While there has been described herein the best mode and other embodiments for the practice of the present teachings, the present teachings are susceptible to various alternatives, modifications and equivalents, as will be appreciated by those skilled in the art. Furthermore, the disclosure explicitly includes combinations and sub-combinations of the elements and features set forth above and below.

Claims

1. An ion-decomposition deodorizing device for a sludge treatment system, the ion-decomposition deodorizing device comprising: a housing (10) defining a housing chamber (1), the housing (10) extending about a horizontal center axis (109); a hollow shaft (2) disposed parallel to the horizontal center axis (109) and supported by the housing (10), the hollow shaft (2) including a main shaft portion (210) disposed within the housing (10) and an extended portion (211) extending out of the housing (10) at one end of the hollow shaft (2), the main shaft portion (210) including a main shaft internal chamber (201) and a main shaft air outlet (209) in fluid communication with the main shaft internal chamber (201) and extending through a sidewall of the main shaft portion (210); characterized in that the ion-decomposition deodorizing device further comprises: a screen fixing member (4) disposed on a lower portion of the housing (10); a screen (3) fixed to the lower portion of the housing (10) by the screen fixing member (4); an ion generation unit (7) disposed within the extended portion (211) of the hollow shaft (2) and configured to generate ionized air into the main shaft internal chamber (201) to generate positive and negative ions; a fan (8) in fluid communication with the main shaft internal chamber (201) and disposed upstream of the ion generation unit (7), the fan (8) being configured to blow air at a predetermined flow rate into the main shaft internal chamber (201); and an electrolysis power source including a positive electrode (6) electrically connected to the hollow shaft (2) and a negative electrode (5) electrically connected to the screen fixing member (4).

2. The device for ionically decomposing deodorization according to claim 1, wherein, The hollow shaft (2) is rotatable about the horizontal center axis (109), the ion-decomposition deodorizing device further comprising a plurality of hollow branch pipes (202) disposed about the main shaft portion (210) of the hollow shaft (2), the hollow branch pipes (202) including a hollow branch pipe inlet (206) disposed at a first end of the hollow branch pipe (202), an end face air outlet (204) disposed at an opposite second end of the hollow branch pipe (202), a hollow branch pipe internal chamber (207) extending between the branch pipe inlet (206) and the end face air outlet (204), and a plurality of branch pipe holes (203) disposed on a sidewall of the hollow branch pipe (202) and in fluid communication with the branch pipe internal chamber (207), the branch pipe internal chamber (207) being in fluid communication with the main shaft internal chamber (201) via the branch pipe inlet (206) and the main shaft air outlet (209).

3. The device for ion decomposition deodorization according to claim 2, wherein, The hollow branch pipe (202) further includes a vane (205) disposed on an outer surface of the hollow branch pipe (202).

4. The device for ion decomposition deodorization according to claim 3, wherein, The vane (205) extends along an axis of the hollow branch pipe (202).

5. The device for ion decomposition deodorization according to claim 4, wherein, The plurality of hollow branch pipes (202) are arranged in a plurality of rows along the main shaft portion (210) of the hollow shaft (2), each row comprising a set of hollow branch pipes (202) spaced apart around a corresponding outer circumference (212) of the main shaft portion (210) of the hollow shaft (2).

6. The device for ion decomposition deodorization according to claim 3, wherein, The blades (205) extend obliquely relative to the axis of the hollow branch pipes (202).

7. The device for ion decomposition deodorization according to claim 6, wherein, The plurality of hollow branch pipes (202) are arranged in a helical path on the outer surface of the main shaft portion (210) of the hollow shaft (2).

8. The device for ionically decomposing deodorization according to claim 1, wherein, The ion generation unit (7) comprises a high-voltage positive electrode ring (701) and a high-voltage negative electrode ring (702).

9. The device for ion decomposition deodorization according to claim 1, wherein, The shell (10) is cylindrical, comprising a cylindrical side wall (113) extending around a horizontal center axis (109), a first circular end plate close to the ion generation unit (7), and a second circular end plate away from the ion generation unit (7), the sludge inlet (101) being arranged at the top of the cylindrical side wall (113) of the shell (10) and close to the first circular end plate, the sludge outlet (103) being arranged at the bottom of the second circular end plate of the shell (10), the exhaust port (102) being arranged at the top of the cylindrical side wall (113) of the shell (10), and the water outlet (104) being arranged at the bottom of the cylindrical side wall (113) of the shell (10).

10. The device for ionically decomposing deodorization according to claim 1, wherein, The shell (10) is composed of a lower part of a semi-circular cross section and an upper part of a rectangular cross section, comprising a lower semi-cylindrical side wall (110) extending around a horizontal center axis (109), a pair of upper side walls (111) extending vertically upward from the top end of the lower semi-cylindrical side wall, a top plate (112) extending between the pair of upper side walls (111), a first end plate close to the ion generation unit (7), and a second end plate away from the ion generation unit (7), the sludge inlet (101) being arranged at the top plate (112) of the shell (10) and close to the first end plate, the sludge outlet (103) being arranged at the bottom of the second end plate of the shell (10), the exhaust port (102) being arranged at the top plate (112) of the shell (10), and the water outlet (104) being arranged at the bottom of the lower semi-cylindrical side wall (110) of the shell (10).

11. The device for ionically decomposing deodorization according to claim 1, wherein, The shell (10) has a rectangular cross section, comprising a bottom plate (114), a pair of upper side walls (111) extending vertically upward from the bottom plate (114), a top plate (112) extending between the pair of upper side walls (111), a first end plate close to the ion generation unit (7), and a second end plate away from the ion generation unit (7), the sludge inlet (101) being arranged at the top plate (112) of the shell (10) and close to the first end plate, the sludge outlet (103) being arranged at the bottom of the second end plate of the shell (10), the exhaust port (102) being arranged at the top plate (112) of the shell (10), and the water outlet (104) being arranged at the bottom plate (114) of the shell (10), and at least two hollow shafts (2) are arranged side by side within the shell (10).

12. The device for ionically decomposing deodorization according to claim 1, wherein, The filter screen fixing member (4) is made of metal and is mounted to the shell (10) via an insulating bracket.

13. The device for ionically decomposing deodorization according to claim 1, wherein, The filter screen fixing part (4) is made of metal and provided with an insulating part on the outer surface.

14. The device for ionically decomposing deodorization according to claim 1, wherein, The filter screen (3) is arranged below the filter screen fixing part (4) so that the filter screen fixing part (4) electrically connected with the negative electrode (5) of the electrolysis power source is in better contact with the sludge, facilitating the double electric layer degradation of the sludge.

15. The device for ionically decomposing deodorization according to claim 1, wherein, The filter screen (3) is arranged above the filter screen fixing part (4).

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