Flaky silver powder production wastewater reduction treatment equipment and process thereof

Abstract

The invention relates to the technical field of production wastewater reduction treatment equipment, and discloses flake silver powder production wastewater reduction treatment equipment and a technology thereof.The flake silver powder production wastewater reduction treatment equipment comprises an evaporation mechanism, and the evaporation mechanism conducts reduction treatment on flake silver powder production wastewater through an evaporator in the evaporation mechanism; the filtering mechanism is connected with the evaporation mechanism, and the filtering mechanism is used for further filtering the wastewater reduced by the evaporation mechanism through a membrane filter in the filtering mechanism; according to the invention, the filtering mechanism is additionally arranged in the subsequent treatment process of the evaporation mechanism, the membrane filter is a DTRO membrane filter, and the mixed liquid water tank, the second bag filter and the cleaning water tank are arranged, so that a DTRO membrane filtering system and an MVR evaporation system are better combined together, and the treatment efficiency is improved. The DTRO membrane can be well applied to the reduction treatment of the flaky silver powder production wastewater, so that the DTRO membrane is more reasonable in the treatment process of the flaky silver powder production wastewater, and the operation cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of production wastewater reduction treatment equipment, and in particular to a flaky silver powder production wastewater reduction treatment equipment and a process thereof. Background Art

[0002] Flake silver powder has a unique two-dimensional structure and exhibits a larger contact area in the silver paste, thus having smaller resistance and better conductivity. This type of silver powder is widely used in photovoltaics, microelectronics, flexible display technology and other fields. Flake silver powder will generate a large amount of wastewater during its production, and the wastewater needs to be treated before discharge. When treating the wastewater, evaporation treatment can be used to reduce the amount of wastewater.

[0003] Such as the wastewater reduction treatment method and system with application number 202310039873.2, this invention provides a wastewater reduction treatment method and system. The wastewater from the PO / SM device first passes through the wastewater evaporator to remove part of the organic azeotrope, and then enters the triple-effect distillation system. After being concentrated by the triple-effect distillation system, the amount of wastewater sent to the incineration device is greatly reduced, and multi-component fractionation is achieved by side line extraction, and the organic azeotrope in the PO / SM wastewater is removed, and the COD in the wastewater is reduced, so that most of the wastewater can be sent to the sewage treatment plant for treatment, and the concentrated waste liquid is sent to the fuel oil tank for storage. The wastewater reduction treatment method and system described in the present invention realizes the reduction treatment of wastewater sent to the incineration device, reduces the wastewater treatment pressure of the incineration device, and realizes the harmless discharge of the device wastewater and zero emission of polluting gases, which not only saves project investment and operating costs, but also saves energy and reduces emissions, helping to achieve the "dual carbon" goals.

[0004] Nowadays, when treating wastewater from the production of flake silver powder, MVR evaporator can be used to reduce the amount of wastewater produced by flake silver powder. However, the treatment effect on wastewater is limited and needs to be improved. Summary of the invention

[0005] The purpose of the present invention is to provide a wastewater reduction treatment device and process for flaky silver powder production to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device and process for reducing the amount of wastewater produced by flaky silver powder, comprising an evaporation mechanism, wherein the evaporation mechanism reduces the amount of wastewater produced by flaky silver powder through an evaporator therein;

[0008] A filtering mechanism, wherein the filtering mechanism is connected to the evaporation mechanism, and the filtering mechanism further filters the wastewater after the reduction treatment of the evaporation mechanism through a membrane filter therein;

[0009] The filtering mechanism includes a mixed liquid water tank, a pump body connecting pipe, a feed pump, an output pipeline, a plurality of second bag filters and a cleaning water tank, wherein the pump body connecting pipe is fixedly installed on the top of the outer wall of the mixed liquid water tank, one end of the pump body connecting pipe extends to the top of the inside of the mixed liquid water tank, the feed pump is fixedly installed on the other end of the pump body connecting pipe, the output pipeline is fixedly installed on the bottom of the outer wall of the mixed liquid water tank, the inlet of the output pipeline extends to the bottom of the inside of the mixed liquid water tank, one of the second bag filters is connected to the output pipeline through a pipeline, adjacent second bag filters are connected through pipelines, the inlet of the membrane filter is connected to one of the second bag filters through a pipeline, and the cleaning water tank is connected to the outlet of the membrane filter through a pipeline;

[0010] One end of the feed pump inlet is connected to the evaporation mechanism output port through a pipeline.

[0011] Optionally, bearing seats are fixedly installed at both ends of the inner wall of the mixed liquid water tank, a mounting shaft is rotatably installed between the two bearing seats, a first bevel gear and a plurality of stirring blades are fixedly installed on the outer wall of the mounting shaft, a motor is fixedly installed on the top of the outer wall of the mixed liquid water tank, the output end of the motor extends to the interior of the mixed liquid water tank, a connecting shaft is fixedly installed on the output end of the motor, a second bevel gear is fixedly installed on the bottom end of the connecting shaft, and the second bevel gear is meshed with the first bevel gear.

[0012] Optionally, an upper cover is fixedly installed on the top of the cleaning water tank by bolts, a water supply pipe is fixedly installed on one side of the upper cover, and one end of the water supply pipe extends to the inner wall of the upper cover, a plurality of leakage holes are opened at the bottom end of the upper cover, the leakage holes are connected to the inner wall of the upper cover, and a heater is fixedly installed at the bottom end of the upper cover.

[0013] Optionally, the evaporation mechanism includes a water tank before evaporation, a water tank connecting pipe, a first bag filter, a first heat exchanger, a second heat exchanger, a third heat exchanger, a steam delivery pipe, a steam channel, a bottom connecting pipe, a forced circulation pump, a separator, a circulation connecting pipe and a compressor. The water tank connecting pipe is fixedly installed at the outlet of the bottom of the water tank before evaporation, the inlet of the first bag filter is fixedly connected to one end of the water tank connecting pipe, the inlet of the first heat exchanger is connected to the outlet of the first bag filter through a pipe, the first heat exchanger, the second heat exchanger and the third heat exchanger are connected through a pipe, the steam channel is at the top of the outer wall of the evaporator, and the water tank connecting pipe One end extends to the inside of the steam channel, the bottom connecting pipe is fixedly installed at the bottom end of the outer wall of the evaporator, the outlet at the bottom of the separator is connected to one end of the bottom connecting pipe, the forced circulation pump is fixedly installed on the outer wall of the outlet at the bottom of the separator, and the output end of the forced circulation pump extends to the inside of the outlet at the bottom of the separator, the circulation connecting pipe is fixedly installed at the top of the outer wall of the separator, one end of the circulation connecting pipe is fixedly installed at one end of the compressor, a compressor connecting pipe is fixedly installed at one end of the compressor, the steam delivery pipe is fixedly installed at the top of the outer wall of the evaporator, and one end of the compressor connecting pipe is fixedly installed at one end of the steam delivery pipe through a flange.

[0014] Optionally, a steam input pipe is fixedly installed on the top of the outer wall of the evaporator, a liquid infusion pipe is fixedly installed on the inner wall of the evaporator, a plurality of branch pipes are fixedly installed on the bottom of the outer wall of the liquid infusion pipe, a water dividing tray is fixedly installed on one end of the branch pipe, a connecting pipe is fixedly installed on the bottom end of the water dividing tray, a mounting frame is fixedly installed on the bottom end of the connecting pipe, a plurality of heating pipes are fixedly installed on the mounting frame, the bottom end of the heating pipes extends to the bottom end of the inside of the evaporator, a fixing frame is fixedly installed on the bottom end of the outer wall of the heating pipe, and one side of the fixing frame is fixedly installed on the inner wall of the evaporator.

[0015] Optionally, one end of the water tank connecting pipe extends to the inside of the steam channel, passes through the bottom outlet of the separator and the inside of the bottom connecting pipe, and is connected to one end of the liquid infusion pipe inside the evaporator.

[0016] Optionally, a mounting pipe is fixedly mounted on one end of the bottom connecting pipe, and one end of the mounting pipe is fixedly mounted on one end of the feed pump.

[0017] Optionally, a plurality of distilled water tank connecting pipes are fixedly installed at the bottom end of the evaporator, a distilled water tank is provided at one side of the evaporator, and the distilled water tank connecting pipes are connected to the connecting port on the distilled water tank.

[0018] Optionally, a wastewater inlet is provided on the top of the outer wall of the first bag filter and the second bag filter, a wastewater outlet is provided on the bottom of the outer wall of the first bag filter and the second bag filter, a mesh frame is fixedly installed on the inner wall of the first bag filter and the second bag filter, and a filter is fixedly installed on the inner wall of the mesh frame.

[0019] A treatment process for a wastewater reduction treatment device for flaky silver powder production comprises the following steps:

[0020] S1, wastewater from the production of flaky silver powder is transported to the water tank before evaporation;

[0021] S2, after preliminary filtration through the first bag filter, the wastewater after filtration through the first bag filter is then transported to the water tank connecting pipe, and then transported to the first heat exchanger, the second heat exchanger and the third heat exchanger through the water tank connecting pipe for preliminary preheating;

[0022] S3, transporting the water to the evaporator through the water tank connecting pipeline, passing through the heating pipe in the evaporator, and undergoing reduction treatment;

[0023] S4, after the steam is condensed into water by the condenser, it is transported to the mixed liquid water tank through the feed pump;

[0024] S5, transporting to the membrane filter for filtration.

[0025] The present invention has at least the following beneficial effects:

[0026] This scheme adds a filtering mechanism in the subsequent treatment process of the evaporation mechanism treatment. The membrane filter is a DTRO membrane filter. By setting a mixed liquid water tank, a second bag filter and a cleaning water tank, the DTRO membrane filtration system and the MVR evaporation system are better combined together, so that the DTRO membrane can be well used in the reduction treatment of flaky silver powder production wastewater, making the DTRO membrane more reasonable in the flaky silver powder production wastewater treatment process and reducing the operating cost of flaky silver powder production wastewater treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a processing diagram of the evaporation mechanism of the present invention;

[0030] Figure 3 This is a processing diagram of the filtering mechanism of the present invention;

[0031] Figure 4 is a cross-sectional view of the evaporator of the present invention;

[0032] Figure 5 It is a cross-sectional view of the cleaning water tank of the present invention;

[0033] Figure 6 A cross-sectional view of a first bag filter and a second bag filter of the present invention;

[0034] Figure 7 It is a cross-sectional view of the mixed liquid water tank of the present invention;

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 001, water tank before evaporation; 101, water tank connecting pipe; 102, first bag filter; 103, first heat exchanger; 104, second heat exchanger; 105, third heat exchanger; 002, evaporator; 201, steam input pipe; 202, steam delivery pipe; 203, infusion pipe; 204, branch pipe; 205, water distribution tray; 206, connecting pipe; 207, mounting frame; 208, heating pipe; 209, fixing frame; 211, steam channel; 212, distilled water tank connecting pipe; 213, distilled water tank; 214, bottom connecting pipe; 215, forced circulation pump; 003, separator; 301, circulation connection Take over; 302, compressor; 303, compressor connecting pipe; 004, mixed liquid water tank; 401, pump body connecting pipe; 402, bearing seat; 403, mounting shaft; 404, first bevel gear; 405, stirring blade; 406, motor; 407, connecting shaft; 408, second bevel gear; 409, output pipeline; 410, feed pump; 005, second bag filter; 501, wastewater inlet; 502, wastewater outlet; 503, mesh frame; 504, filter; 006, membrane filter; 007, cleaning water tank; 701, upper cover; 702, heater; 703, water supply pipe; 704, water leakage hole. DETAILED DESCRIPTION

[0037] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-Figure 7The present invention provides a device for reducing the amount of wastewater produced by flaky silver powder and a process thereof, comprising an evaporation mechanism, wherein the evaporation mechanism performs a reduction treatment on the wastewater produced by flaky silver powder through an evaporator 002 therein; a filtering mechanism, wherein the filtering mechanism is connected to the evaporation mechanism, and the filtering mechanism further filters the wastewater after the reduction treatment by the evaporation mechanism through a membrane filter 006 therein; the filtering mechanism comprises a mixed liquid water tank 004, a pump body connecting pipe 401, a feed pump 410, an output pipe 409, a plurality of second bag filters 005 and a cleaning water tank 007, wherein the pump body connecting pipe 401 is fixedly installed on the top of the outer wall of the mixed liquid water tank 004, one end of the pump body connecting pipe 401 extends to the top of the inside of the mixed liquid water tank 004, the feed pump 410 is fixedly installed on the other end of the pump body connecting pipe 401, the output pipe 409 is fixedly installed on the bottom of the outer wall of the mixed liquid water tank 004, and the inlet of the output pipe 409 extends to the bottom of the inside of the mixed liquid water tank 004, wherein the filter mechanism comprises a mixed liquid water tank 004, a pump body connecting pipe 401, a feed pump 410 ... A second bag filter 005 is connected to the output pipe 409 through a pipeline, adjacent second bag filters 005 are connected through pipelines, the inlet of the membrane filter 006 is connected to one of the second bag filters 005 through a pipeline, and the cleaning water tank 007 is connected to the outlet of the membrane filter 006 through a pipeline; one end of the inlet of the feed pump 410 is connected to the output port of the evaporation mechanism through a pipeline; a filtering mechanism is added in the subsequent treatment process of the evaporation mechanism treatment, the membrane filter 006 is a DTRO membrane filter, and by setting a mixed liquid water tank 004, a second bag filter 005 and a cleaning water tank 007, the DTRO membrane filtration system and the MVR evaporation system are better combined together, so that the DTRO membrane can be well used in the reduction treatment of flaky silver powder production wastewater, making the DTRO membrane more reasonable in the flaky silver powder production wastewater treatment process, and reducing the operating cost of flaky silver powder production wastewater treatment.

[0039] In this example, the evaporator 002 is an MVR evaporator.

[0040] In this example, Figure 3As shown, the inlet and outlet of the membrane filter 006 are connected with a circulation channel, and a circulation pump is arranged at the circulation channel, so that the wastewater can circulate in the membrane filter 006 for multiple times and be filtered multiple times. A concentrate regulating valve and a concentrate bypass valve are arranged at the outlet of the circulation channel. After the wastewater is filtered multiple times, the concentrate regulating valve and the concentrate bypass valve are opened to discharge the filtered concentrate, and the filtered clean water is discharged through another pipe. The water replenishment pipe 703 at the upper cover 701 of the cleaning water tank 007 is respectively connected with the tap water replenishment pipe and the production water replenishment pipe. The production water replenishment pipe is connected to the clean water discharge pipe through the middle replenishment valve, and the clean water after filtration can be used to replenish the water in the corresponding cleaning water tank 007. A cleaning acid pump and a cleaning alkali pump are arranged at the cleaning water tank 007 to replenish the cleaning agent. After the cleaning water is transported by the cleaning water tank 007 to clean the membrane filter 006, it is discharged through the production water valve.

[0041] In some embodiments, see Figure 5 , Figure 7 , bearing seats 402 are fixedly installed at both ends of the inner wall of the mixed liquid water tank 004, a mounting shaft 403 is rotatably installed between the two bearing seats 402, a first bevel gear 404 and a plurality of stirring blades 405 are fixedly installed on the outer wall of the mounting shaft 403, a motor 406 is fixedly installed on the top of the outer wall of the mixed liquid water tank 004, the output end of the motor 406 extends to the inside of the mixed liquid water tank 004, a connecting shaft 407 is fixedly installed on the output end of the motor 406, a second bevel gear 408 is fixedly installed on the bottom end of the connecting shaft 407, and the second bevel gear 408 is meshed with the first bevel gear 404, an upper cover 701 is fixedly installed on the top of the cleaning water tank 007 by bolts, a water supply pipe 703 is fixedly installed on one side of the upper cover 701, and one end of the water supply pipe 703 extends to the inner wall of the upper cover 701 A plurality of leakage holes 704 are provided at the bottom of the upper cover 701, and the leakage holes 704 are communicated with the inner wall of the upper cover 701. A heater 702 is fixedly installed at the bottom of the upper cover 701. By setting the mixed liquid water tank 004, the motor 406 is started to drive the second bevel gear 408 to rotate. The second bevel gear 408 drives the installation shaft 403 and the stirring blade 405 to rotate through the transmission between the second bevel gear 408 and the first bevel gear 404, and mixes the wastewater to be filtered in the mixed liquid water tank 004 to make the components in the wastewater uniform, thereby increasing the filtering effect of the membrane filter 006. By setting the heater 702, a heating wire is provided inside the heating element on the heater 702, and the cleaning water in the cleaning water tank 007 is heated by power, so that the cleaning effect of the membrane filter is better.

[0042] In some embodiments, see Figure 2 , Figure 4The evaporation mechanism includes a water tank 001 before evaporation, a water tank connecting pipe 101, a first bag filter 102, a first heat exchanger 103, a second heat exchanger 104, a third heat exchanger 105, a steam delivery pipe 202, a steam channel 211, a bottom connecting pipe 214, a forced circulation pump 215, a separator 003, a circulation connecting pipe 301 and a compressor 302. The water tank connecting pipe 101 is fixedly installed at the outlet of the bottom of the water tank 001 before evaporation, the inlet of the first bag filter 102 is fixedly connected to one end of the water tank connecting pipe 101, and the inlet of the first heat exchanger 103 is connected to the outlet of the first bag filter 102 through a pipe. The first heat exchanger 103, the second heat exchanger 104, and the third heat exchanger 105 are connected by pipelines. The steam channel 211 is at the top of the outer wall of the evaporator 002. One end of the water tank connecting pipe 101 extends to the inside of the steam channel 211. The bottom connecting pipe 214 is fixedly installed at the bottom end of the outer wall of the evaporator 002. The outlet at the bottom of the separator 003 is connected to one end of the bottom connecting pipe 214. The forced circulation pump 215 is fixedly installed on the outer wall of the outlet at the bottom of the separator 003, and the output end of the forced circulation pump 215 extends to the inside of the outlet at the bottom of the separator 003. The circulation connecting pipe 301 is fixedly installed on the top of the outer wall of the separator 003. One end of the ring connecting pipe 301 is fixedly installed on one end of the compressor 302, and a compressor connecting pipe 303 is fixedly installed on one end of the compressor 302. The steam delivery pipe 202 is fixedly installed on the top of the outer wall of the evaporator 002, and one end of the compressor connecting pipe 303 is fixedly installed on one end of the steam delivery pipe 202 through a flange. The steam input pipe 201 is fixedly installed on the top of the outer wall of the evaporator 002, and the infusion pipe 203 is fixedly installed on the inner wall of the evaporator 002. A plurality of branch pipes 204 are fixedly installed on the bottom of the outer wall of the infusion pipe 203, and a water distribution tray 205 is fixedly installed on one end of the branch pipe 204. A connecting pipe 206 is fixedly installed on the bottom of the water distribution tray 205, and the connecting pipe 20 6, a mounting frame 207 is fixedly installed at the bottom end, a plurality of heating tubes 208 are fixedly installed on the mounting frame 207, the bottom end of the heating tube 208 extends to the bottom end of the inside of the evaporator 002, a fixing frame 209 is fixedly installed at the bottom end of the outer wall of the heating tube 208, one side of the fixing frame 209 is fixedly installed on the inner wall of the evaporator 002, a mounting pipe is fixedly installed at one end of the bottom connecting pipe 214, and one end of the mounting pipe is fixedly installed at one end of the feed pump 410, a plurality of distilled water tank connecting pipes 212 are fixedly installed at the bottom end of the evaporator 002, a distilled water tank 213 is provided at one side of the evaporator 002, and the distilled water tank connecting pipe 212 is connected to the connecting port on the distilled water tank 213;The wastewater from the production of flaky silver powder is transported to the water tank 001 before evaporation, and then the wastewater is transported to the first bag filter 102 through the pump body for preliminary filtration. The wastewater after filtration by the first bag filter 102 is then transported to the water tank connecting pipe 101, and transported to the first heat exchanger 103, the second heat exchanger 104 and the third heat exchanger 105 through the water tank connecting pipe 101 for preliminary heating, and then transported to the water tank connecting pipe 101, and transported to the evaporator 002 through the water tank connecting pipe 101, and then transported to the evaporator 002 through the heating pipe 208 in the evaporator 002 for reduction treatment. The concentrated concentrated water is transported to the distilled water tank 213 through the distilled water tank 213 connecting pipe 212 for further treatment. The steam generated by the heating of the heating pipe 208 is circulated between the evaporator 002, the separator 003 and the circulation connecting pipe 301 through the forced circulation pump 215, and the waste heat of the steam is utilized. Then, it is transported to the mixed liquid water tank 004 through the feed pump 410. ;

[0043] In some embodiments, see Figure 4 One end of the water tank connecting pipe 101 extends to the inside of the steam channel 211, passes through the bottom outlet of the separator 003 and the inside of the bottom connecting pipe 214, and is connected to one end of the infusion pipe 203 inside the evaporator 002; by partially installing the water tank connecting pipe 101 in the separator 003, the liquid in the water tank connecting pipe 101 can be further kept at a higher temperature level.

[0044] For further information, please refer again to Figure 6 A wastewater inlet 501 is provided on the top of the outer wall of the first bag filter 102 and the second bag filter 005, a wastewater outlet 502 is provided on the bottom of the outer wall of the first bag filter 102 and the second bag filter 005, a mesh frame 503 is fixedly installed on the inner wall of the first bag filter 102 and the second bag filter 005, and a filter screen 504 is fixedly installed on the inner wall of the mesh frame 503; by arranging the first bag filter 102 and the second bag filter 005, the wastewater input into the evaporation mechanism and the filtering mechanism can be preliminarily filtered to reduce the processing pressure.

[0045] The working process and principle of the present invention are as follows: the wastewater produced by the flaky silver powder is transported to the water tank 001 before evaporation, and the wastewater is transported to the first bag filter 102 through the pump body for preliminary filtration. The wastewater after filtration by the first bag filter 102 is then transported to the water tank connecting pipe 101, and is transported to the first heat exchanger 103, the second heat exchanger 104 and the third heat exchanger 105 through the water tank connecting pipe 101 for preliminary heating, and then transported to the water tank connecting pipe 101, and is transported to the evaporator 002 through the water tank connecting pipe 101, and is reduced through the heating pipe 208 in the evaporator 002. The concentrated water is transported to the distilled water tank 213 through the distilled water tank 213 connecting pipe 212 for further treatment. The steam generated by the heating of the heating pipe 208 is circulated between the evaporator 002, the separator 003 and the circulation connecting pipe 301 through the forced circulation pump 215, and the waste heat of the steam is utilized, and then it is transported to the mixed liquid water tank 004 through the feed pump 410.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater reduction treatment device for flaky silver powder production, characterized in that: include: An evaporation mechanism, wherein the evaporation mechanism performs a reduction treatment on wastewater produced by flaky silver powder through an evaporator (002) therein; A filtering mechanism, wherein the filtering mechanism is connected to the evaporation mechanism, and the filtering mechanism further filters the wastewater after the reduction treatment by the evaporation mechanism through a membrane filter (006) therein; The filtering mechanism comprises a mixed liquid water tank (004), a pump body connecting pipe (401), a feed pump (410), an output pipe (409), a plurality of second bag filters (005) and a cleaning water tank (007), wherein the pump body connecting pipe (401) is fixedly installed on the top of the outer wall of the mixed liquid water tank (004), one end of the pump body connecting pipe (401) extends to the top of the interior of the mixed liquid water tank (004), the feed pump (410) is fixedly installed on the other end of the pump body connecting pipe (401), and the output pipe (409) is fixedly installed on the outer wall of the mixed liquid water tank (004). At the bottom of the outer wall of the mixed liquid water tank (004), the inlet of the output pipe (409) extends to the bottom of the interior of the mixed liquid water tank (004), one of the second bag filters (005) is connected to the output pipe (409) via a pipe, adjacent second bag filters (005) are connected via pipes, the inlet of the membrane filter (006) is connected to one of the second bag filters (005) via a pipe, and the cleaning water tank (007) is connected to the outlet of the membrane filter (006) via a pipe; One end of the inlet of the feed pump (410) is connected to the output port of the evaporation mechanism through a pipeline.

2. The equipment for reducing the wastewater produced by flaky silver powder according to claim 1 is characterized by: Bearing seats (402) are fixedly installed at both ends of the inner wall of the mixed liquid water tank (004), a mounting shaft (403) is rotatably installed between the two bearing seats (402), a first bevel gear (404) and a plurality of stirring blades (405) are fixedly installed on the outer wall of the mounting shaft (403), a motor (406) is fixedly installed on the top of the outer wall of the mixed liquid water tank (004), an output end of the motor (406) extends into the interior of the mixed liquid water tank (004), a connecting shaft (407) is fixedly installed on the output end of the motor (406), a second bevel gear (408) is fixedly installed on the bottom end of the connecting shaft (407), and the second bevel gear (408) is meshed with the first bevel gear (404).

3. The equipment for reducing the wastewater produced by flaky silver powder according to claim (1) is characterized in that: An upper cover (701) is fixedly installed on the top of the cleaning water tank (007) by bolts, a water supply pipe (703) is fixedly installed on one side of the upper cover (701), and one end of the water supply pipe (703) extends to the inner wall of the upper cover (701), a plurality of water leakage holes (704) are opened at the bottom end of the upper cover (701), and the water leakage holes (704) are connected to the inner wall of the upper cover (701), and a heater (702) is fixedly installed at the bottom end of the upper cover (701).

4. The equipment for reducing wastewater from the production of flaky silver powder according to claim 1 is characterized by: The evaporation mechanism comprises a pre-evaporation water tank (001), a water tank connecting pipe (101), a first bag filter (102), a first heat exchanger (103), a second heat exchanger (104), a third heat exchanger (105), a steam delivery pipe (202), a steam channel (211), a bottom connecting pipe (214), a forced circulation pump (215), a separator (003), a circulation connecting pipe (301) and a compressor (302), wherein the water tank connecting pipe (101) is fixedly installed on The outlet at the bottom of the water tank (001) before evaporation, the inlet of the first bag filter (102) is fixedly connected to one end of the water tank connecting pipe (101), the inlet of the first heat exchanger (103) is connected to the outlet of the first bag filter (102) through a pipe, the first heat exchanger (103), the second heat exchanger (104), and the third heat exchanger (105) are connected through a pipe, and the steam channel (211) is connected to the top of the outer wall of the evaporator (002). One end of the water tank connecting pipe (101) extends to the inside of the steam channel (211), the bottom connecting pipe (214) is fixedly installed at the bottom end of the outer wall of the evaporator (002), the outlet at the bottom of the separator (003) is connected to one end of the bottom connecting pipe (214), the forced circulation pump (215) is fixedly installed on the outer wall of the outlet at the bottom of the separator (003), and the output end of the forced circulation pump (215) extends to the outlet at the bottom of the separator (003). The circulation connecting pipe (301) is fixedly mounted on the top of the outer wall of the separator (003), one end of the circulation connecting pipe (301) is fixedly mounted on one end of the compressor (302), one end of the compressor (302) is fixedly mounted with a compressor connecting pipe (303), the steam delivery pipe (202) is fixedly mounted on the top of the outer wall of the evaporator (002), and one end of the compressor connecting pipe (303) is fixedly mounted on one end of the steam delivery pipe (202) through a flange.

5. The equipment for reducing the wastewater produced by flaky silver powder according to claim 4 is characterized in that: A steam input pipe (201) is fixedly mounted on the top of the outer wall of the evaporator (002); a liquid infusion pipe (203) is fixedly mounted on the inner wall of the evaporator (002); a plurality of branch pipes (204) are fixedly mounted on the bottom of the outer wall of the liquid infusion pipe (203); a water distribution tray (205) is fixedly mounted on one end of the branch pipe (204); a connecting pipe (206) is fixedly mounted on the bottom end of the water distribution tray (205); a mounting frame (207) is fixedly mounted on the bottom end of the connecting pipe (206); a plurality of heating pipes (208) are fixedly mounted on the mounting frame (207); the bottom ends of the heating pipes (208) extend to the bottom end of the inside of the evaporator (002); a fixing frame (209) is fixedly mounted on the bottom end of the outer wall of the heating pipe (208); one side of the fixing frame (209) is fixedly mounted on the inner wall of the evaporator (002).

6. The equipment for reducing the wastewater produced by flaky silver powder according to claim 5 is characterized by: One end of the water tank connecting pipe (101) extending to the interior of the steam channel (211) passes through the bottom outlet of the separator (003) and the interior of the bottom connecting pipe (214) to be connected to one end of the liquid infusion pipe (203) inside the evaporator (002).

7. The equipment for reducing wastewater from the production of flaky silver powder according to claim 4 is characterized by: A mounting pipe is fixedly mounted on one end of the bottom connecting pipe (214), and one end of the mounting pipe is fixedly mounted on one end of the feed pump (410).

8. The equipment for reducing wastewater from the production of flaky silver powder according to claim 1 is characterized by: A plurality of distilled water tank connecting pipes (212) are fixedly installed at the bottom end of the evaporator (002), a distilled water tank (213) is arranged on one side of the evaporator (002), and the distilled water tank connecting pipes (212) are connected to a connecting port on the distilled water tank (213).

9. The equipment for reducing wastewater from the production of flaky silver powder according to claim 1, characterized in that: The top of the outer wall of the first bag filter (102) and the second bag filter (005) is provided with a wastewater inlet (501), the bottom of the outer wall of the first bag filter (102) and the second bag filter (005) is provided with a wastewater outlet (502), the inner wall of the first bag filter (102) and the second bag filter (005) is fixedly installed with a mesh frame (503), and the inner wall of the mesh frame (503) is fixedly installed with a filter screen (504).

10. The treatment process of the wastewater reduction treatment equipment for flaky silver powder production according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, wastewater from the production of flaky silver powder is transported to the water tank (001) before evaporation; S2, after preliminary filtration through the first bag filter (102), the wastewater filtered through the first bag filter (102) is then transported to the water tank connecting pipe (101), and then transported through the water tank connecting pipe (101) to the first heat exchanger (103), the second heat exchanger (104) and the third heat exchanger (105) for preliminary preheating; S3, transporting the waste gas to the evaporator (002) through the water tank connecting pipe (101), passing through the heating pipe (208) in the evaporator (002), and undergoing a reduction treatment; S4, after the steam is condensed into water by the condenser, it is transported to the mixed liquid water tank (004) through the feed pump (410); S5. Transport to the membrane filter (006) for filtration.

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