Ceramic membrane water purification treatment device not prone to membrane pollution

Abstract

The utility model discloses a ceramic membrane water purification treatment device not prone to membrane pollution. The ceramic membrane water purification treatment device comprises a filter tank and a stirring device, a coagulative precipitation tank is arranged on the outer side of the filter tank, a water inlet is formed in the coagulative precipitation tank, and the coagulative precipitation tank is directly communicated with the filter tank or is communicated with the filter tank through a water outlet device I; the stirring device comprises a plurality of impeller pushing assemblies, each impeller pushing assembly comprises a rotating shaft, a plurality of driving impellers and a plurality of driven impellers, the plurality of driving impellers are arranged in the coagulative precipitation tank, and the plurality of driven impellers are arranged in the filtering tank; a ceramic membrane assembly is arranged in the filter tank and is connected with a water outlet device II; according to the sewage treatment device, the occupied area of traditional sewage treatment can be saved, sewage in the coagulative precipitation tank and a flocculating agent are rapidly and uniformly mixed under the stirring action through the driving impeller, and the driven impeller rotates to continuously stir sewage on the surface of the ceramic membrane assembly in the filter tank, so that the filtering efficiency of the ceramic membrane assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water purification treatment technical field, concretely relates to a kind of ceramic membrane water purification treatment device and method not prone to membrane pollution. BACKGROUND

[0002] Current traditional sewage treatment is composed of coagulation tank, sedimentation tank and filter tank, and the traditional coagulation tank and sedimentation tank have large land area and long hydraulic retention time, and are not resistant to water quality impact, thus leading to unstable sewage treatment effect;In the filter tank, the submerged ceramic membrane filtration is one of the typical representatives of dead-end filtration, which is easy to form a complete filter cake layer on the surface of the ceramic membrane, which increases the difficulty of hydraulic backwashing and leads to the decline of ceramic membrane filtration efficiency.

[0003] Therefore, the company develops a kind of ceramic membrane water purification treatment device not prone to membrane pollution, which can save coagulation tank and sedimentation tank area, and improve the filtration efficiency of ceramic membrane plate. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of ceramic membrane water purification treatment device not prone to membrane pollution, which can save coagulation tank and sedimentation tank area, and improve the filtration efficiency of ceramic membrane plate.

[0005] The utility model designs a kind of ceramic membrane water purification treatment device not prone to membrane pollution, including filter tank, stirring device;The outer side of filter tank is provided with coagulation sedimentation tank, and the coagulation sedimentation tank is provided with water inlet, and the coagulation sedimentation tank and filter tank are directly communicated or communicated through water outlet device one.

[0006] The stirring device includes a plurality of impeller pushing assemblies, the impeller pushing assembly includes a rotating shaft, a driving impeller and a driven impeller, a plurality of driving impellers are arranged in the coagulation sedimentation tank, and a plurality of driven impellers are arranged in the filter tank.

[0007] The filter tank is provided with a ceramic membrane assembly, and the ceramic membrane assembly is connected with water outlet device two.

[0008] Compared with the prior art, the beneficial effects of the utility model lie in that: the coagulation sedimentation tank is arranged outside the filter tank, 70-80% of the traditional sewage treatment area can be saved, water can flow into the filter tank for filtration through the coagulation sedimentation tank, the water stays for a short time, the sewage is introduced into the coagulation sedimentation tank through the water inlet, the sewage is coagulated and deposited in the coagulation sedimentation tank, and then is directly or through the water outlet device one filtered into the filter tank, the sewage and the flocculating agent in the coagulation sedimentation tank are uniformly mixed under the stirring action of the driving impeller arranged in the coagulation sedimentation tank, the sewage is filtered into the filter tank after deposition, the driving impeller drives the passive impeller to rotate, the sewage on the surface of the ceramic membrane assembly in the filter tank is continuously stirred, the solid substances on the surface of the ceramic membrane assembly are dispersed, the filter cake layer is avoided, the sewage is filtered through the ceramic membrane assembly, and finally the clean water flows into the water outlet device two, so that the filtration efficiency of the ceramic membrane assembly is improved, and the sewage treatment effect is improved.

[0009] Further, the coagulation sedimentation tank comprises a coagulation I area, a coagulation and deposition II area and a deposition III area, the coagulation I area, the coagulation and deposition II area and the deposition III area are sequentially connected, and the coagulation I area, the coagulation and deposition II area and the deposition III area form a semi-enclosed structure outside the filter tank, and the filter tank is located in the semi-enclosed structure.

[0010] The beneficial effects of the above further technical scheme lie in that: the coagulation I area, the coagulation and deposition II area and the deposition III area are sequentially arranged to form a semi-enclosed structure, so that the sewage is fully coagulated in the coagulation I area, the flow rate is reduced after the sewage flows through the bend in the coagulation and deposition II area, the impurities in the sewage are formed into large particles in the coagulation and deposition II area, the flow rate is reduced after the sewage flows through the bend again in the deposition III area, the large particles and the impurities are deposited to the bottom of the deposition III area, and the deposited water is located in the upper layer of the deposition III area.

[0011] Further, the water inlet is arranged at one end of the coagulation I area, the deposition III area is provided with a coagulation area water outlet, and the coagulation area water outlet is directly or through the water outlet device one in communication with the filter tank.

[0012] The deposition III area is further provided with a coagulation area sludge discharge port, and the coagulation area sludge discharge port is located below the coagulation area water outlet.

[0013] Preferably, the coagulation area sludge discharge port is located at the bottom of the filter tank.

[0014] More preferably, the water outlet device one comprises a water outlet groove, a water inlet of the water outlet groove is connected with the coagulation area water outlet, and a water outlet of the water outlet groove is connected with the filter tank.

[0015] The beneficial effect of the further technical scheme is that the sewage enters the coagulation I area through the water inlet, and is deposited in the sedimentation III area, so that the large particle substances and impurities are discharged from the sludge discharge port of the coagulation area, and the deposited water is discharged from the water outlet or the water outlet device of the coagulation area and enters the filter tank.

[0016] The filter tank and the sedimentation III area are connected through the water outlet channel, so that the deposited water is smoothly discharged into the filter tank.

[0017] Further, one end of the rotating shaft is connected with the driving impeller, and the other end of the rotating shaft is connected with the driven impeller.

[0018] The driving impeller is arranged in the coagulation I area, and the driven impeller is arranged in the filter tank.

[0019] The beneficial effect of the further technical scheme is that the sewage drives the driving impeller to rotate in the coagulation I area, so that the sewage in the coagulation I area is uniformly mixed with the flocculating agent under the action of stirring, and the other end of the rotating shaft is provided with the driven impeller, so that the driving impeller drives the driven impeller to rotate in the sedimentation tank, so that the sewage in the sedimentation tank is in a state of stirring, and the solid particles are dispersed, thereby improving the filtering efficiency of the ceramic membrane assembly and improving the effect of sewage treatment.

[0020] Further, a plurality of guide plates are arranged on the coagulation I area, and the guide plates are arranged between the driving impellers.

[0021] The guide plates are arranged in parallel.

[0022] The beneficial effect of the further technical scheme is that the guide plates divide the sewage in the coagulation I area, so that the driving impellers fully stir the divided sewage and push the sewage forward, and the parallel arrangement of the guide plates can fully stir the divided sewage and quickly flow into the coagulation II area.

[0023] Further, the ceramic membrane assembly comprises a support device, and a plurality of ceramic membrane plates are arranged on the support device.

[0024] The plurality of ceramic membrane plates are vertically arranged in the filter tank, the ceramic membrane plates are parallel to each other, and the ceramic membrane plates are not parallel to the coagulation I area; and a gap for water passing is arranged between adjacent ceramic membrane plates.

[0025] The beneficial effect of the further technical scheme is that the plurality of ceramic membrane plates are combined together on the support device, thereby forming a rapid and efficient filtering device in the filter tank.

[0026] The ceramic membrane plates are vertically arranged in the filter tank and are parallel to each other, sewage enters the gaps between the ceramic membrane plates and contacts the surfaces of the ceramic membrane plates, and then penetrates into the interiors of the ceramic membrane plates, so that the sewage can be quickly and efficiently filtered.

[0027] Further, the ceramic membrane plate is provided with a first ceramic membrane water outlet and a second ceramic membrane water outlet at two ends respectively, and the first ceramic membrane water outlet and the second ceramic membrane water outlet are connected with the pump through the water outlet device two.

[0028] The beneficial effects of the above further technical solutions are that: after the sewage is filtered through the ceramic membrane plate, solid particulate matter is left outside the ceramic membrane plate, the filtered water flows into the first ceramic membrane water outlet and the second ceramic membrane water outlet, and then flows into the water outlet device two from the first ceramic membrane water outlet and the second ceramic membrane water outlet, so that the flow capacity of water is large under the negative pressure suction of the pump, and the water can be quickly and efficiently filtered.

[0029] Further, the water outlet device two comprises a plurality of first water outlet pipes, second water outlet pipes and third water outlet pipes; the first ceramic membrane water outlet is in communication with the first water outlet pipe directly or through a connecting pipe, and the second ceramic membrane water outlet is in communication with the second water outlet pipe directly or through a connecting pipe.

[0030] One end of the third water outlet pipe is in communication with the first water outlet pipe, and the other end of the third water outlet pipe is in communication with the second water outlet pipe; the first water outlet pipe and the second water outlet pipe are closed at the ends away from the third water outlet pipe, and the third water outlet pipe is connected with the pump.

[0031] The beneficial effects of the above further technical solutions are that: under the suction of the pump, the sewage directly enters the first water outlet pipe through the first ceramic membrane water outlet or enters the first water outlet pipe after passing through the connecting pipe, the sewage directly enters the second water outlet pipe through the second ceramic membrane water outlet or enters the second water outlet pipe after passing through the connecting pipe, and finally the clean water in the first water outlet pipe and the second water outlet pipe flows into the third water outlet pipe, so that the filtered water is discharged from the ceramic membrane plate to the outside of the ceramic membrane assembly, and finally discharged to the outside of the filter tank.

[0032] Further, the water outlet device two is located in the filter tank, and the passive impeller is located between the first water outlet pipe and the coagulation I area.

[0033] The beneficial effects of the above further technical solutions are that: the water flow between the first water outlet pipe and the coagulation I area is stirred by the passive impeller, so that the surface of the ceramic membrane plate is continuously impacted, the sewage can be quickly and efficiently filtered, and the solid particulate matter can be dispersed to avoid forming a whole filter cake layer.

[0034] Further, the lower end of the filter tank is provided with a discharge port.

[0035] The beneficial effects of the above further technical solutions are that when the filtration is finished, the impurities in the filter tank are discharged through the emptying port, ensuring the cleanliness of the filter tank. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a side sectional view of the ceramic membrane water purification treatment device not prone to membrane pollution.

[0037] Figure 2 It is a top view of the ceramic membrane water purification treatment device not prone to membrane pollution.

[0038] Figure 3 It is a structural schematic view of the ceramic membrane assembly.

[0039] 1, filter tank; 11, emptying port; 2, coagulation sedimentation tank; 21, coagulation I area; 211, flow guide plate; 212, water inlet; 22, coagulation sedimentation II area; 23, sedimentation III area; 231, water outlet groove; 232, coagulation area sludge discharge port; 233, coagulation area water outlet; 3, stirring device; 31, impeller pushing assembly; 311, rotating shaft; 312, driving impeller; 313, driven impeller; 4, ceramic membrane assembly; 41, support device; 42, ceramic membrane plate; 421, first ceramic membrane water outlet; 422, second ceramic membrane water outlet; 43, first water outlet pipe; 44, second water outlet pipe; 45, third water outlet pipe; 46, pump; 47, connecting pipe. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the embodiments of the present application.

[0041] Embodiment one:

[0042] The present application aims to provide a ceramic membrane water purification treatment device not prone to membrane pollution, which can save coagulation tank and sedimentation tank area, and at the same time improve the filtration efficiency of the ceramic membrane plate 42.

[0043] The utility model discloses a ceramic membrane water purification treatment device not easy membrane pollution, including filter tank 1, stirring device 3, the outside of filter tank 1 is provided with coagulation sedimentation tank 2, coagulation sedimentation tank 2 is provided with water inlet 212, coagulation sedimentation tank 2 and filter tank 1 are directly communicated or through water outlet device one, stirring device 3 includes a plurality of impeller push assembly 31, impeller push assembly 31 includes rotating shaft 311, driving impeller 312, passive impeller 313, a plurality of driving impeller 312 are arranged in coagulation sedimentation tank 2, a plurality of passive impeller 313 are arranged in filter tank 1, be provided with ceramic membrane assembly 4 in filter tank 1, ceramic membrane assembly 4 is connected with water outlet device two, through the outside of filter tank 1 is provided with coagulation sedimentation tank 2, can save traditional sewage treatment 70-80% floor area, can make water power flow into filter tank 1 and filter in coagulation sedimentation tank 2, avoid the water power long time stay, through the water inlet 212 of coagulation sedimentation tank 2 and pass in sewage, after making sewage coagulation, precipitation in coagulation sedimentation tank 2 directly or through water outlet device one flow into filter tank 1 and filter, through the driving impeller 312 in coagulation sedimentation tank 2, thereby with flocculating agent in coagulation sedimentation tank 2 under the action of stirring fast mixing uniform, after passing through the sedimentation and flow into filter tank 1 and filter, simultaneously, driving impeller 312 drives passive impeller 313 to rotate, to ceramic membrane assembly 4's surface sewage in filter tank 1 is continuously agitated, can make ceramic membrane assembly 4 surface filtration solid material dispersion, avoid forming filter cake layer, after ceramic membrane assembly 4's filtration, clear water flows into water outlet device two, thereby improve the efficiency of ceramic membrane assembly 4 filtration, thereby improve the effect of sewage treatment.

[0044] Coagulation sedimentation tank 2 includes coagulation I area 21, coagulation and precipitation II area 22, precipitation III area 23, coagulation I area 21, coagulation and precipitation II area 22, precipitation III area 23 are sequentially connected, coagulation I area 21, coagulation and precipitation II area 22, precipitation III area 23 form a half-enclosed structure outside filter tank 1, and filter tank 1 is located in the half-enclosed structure; by sequentially arranging coagulation I area 21, coagulation and precipitation II area 22, and precipitation III area 23 as a half-enclosed structure, so that the sewage is fully coagulated in coagulation I area 21, the flow rate is reduced after the bend in coagulation and precipitation II area 22, which can make the impurities in the sewage form large particles in coagulation and precipitation II area 22, and the large particles and impurities are precipitated to the bottom of the tank in precipitation III area 23, so that the precipitated water is in the upper layer of precipitation III area 23.

[0045] The water inlet 212 is arranged at one end of the coagulation I area 21, the coagulation area water outlet 233 is arranged at the coagulation III area 23, the coagulation area water outlet 233 is communicated with the filter tank 1 directly or through the water outlet device one; the coagulation III area 23 is further provided with the coagulation area sludge outlet 232, the coagulation area sludge outlet 232 is below the coagulation area water outlet 233; preferably, the coagulation area sludge outlet 232 is at the bottom of the filter tank 1; more preferably, the water outlet device one comprises a water outlet groove, the water inlet of the water outlet groove is connected with the coagulation area water outlet 233, and the water outlet of the water outlet groove is connected with the filter tank 1; sewage enters the coagulation I area 21 through the water inlet 212, and is precipitated in the coagulation III area 23, so that large particles and impurities are discharged through the coagulation area sludge outlet 232, and the precipitated water is discharged into the filter tank 1 through the coagulation area water outlet 233 or the water outlet device one; the filter tank 1 and the coagulation III area 23 are communicated through the water outlet groove, so that the precipitated water is smoothly discharged into the filter tank 1.

[0046] One end of the rotating shaft 311 is connected with the driving impeller 312, and the other end of the rotating shaft 311 is connected with the driven impeller 313; the driving impeller 312 is arranged in the coagulation I area 21, and the driven impeller 313 is arranged in the filter tank 1; the pushing impeller is arranged at one end of the rotating shaft 311, so that the sewage drives the pushing impeller to rotate in the coagulation I area 21, so that the sewage in the coagulation I area 21 is uniformly mixed with the flocculating agent under the action of stirring; the pushed impeller is arranged at the other end of the rotating shaft 311, so that the pushing impeller drives the pushed impeller to rotate in the sedimentation tank, so that the sewage in the sedimentation tank is in a stirring state, and the solid particles are dispersed, thereby improving the filtering efficiency of the ceramic membrane assembly 4 and improving the effect of sewage treatment.

[0047] A plurality of guide plates are arranged on the coagulation I area 21, the guide plates are arranged between the driving impellers 312; the guide plates are arranged in parallel; the sewage in the coagulation I area 21 is shunted through the guide plates, so that the driving impellers 312 fully stir the shunted sewage and push the sewage forward, and the parallel arrangement of the guide plates can fully stir the shunted sewage and make the shunted sewage flow into the coagulation II area quickly.

[0048] The ceramic membrane assembly 4 comprises a support device 41, and a plurality of ceramic membrane plates 42 are arranged on the support device 41; the plurality of ceramic membrane plates 42 are vertically arranged in the filter tank 1, the ceramic membrane plates 42 are parallel to each other, and the ceramic membrane plates 42 are not parallel to the coagulation I area 21; gaps for water passing through are arranged between adjacent ceramic membrane plates 42; the plurality of ceramic membrane plates 42 are combined together through the support device 41, so that a rapid and efficient filtering device is formed in the filter tank 1; the ceramic membrane plates 42 are vertically arranged in the filter tank 1, the ceramic membrane plates 42 are parallel to each other, sewage enters the gaps between the ceramic membrane plates 42 and contacts the surfaces of the ceramic membrane plates 42, so as to penetrate into the interiors of the ceramic membrane plates 42, and the sewage can be rapidly and efficiently filtered.

[0049] The ceramic membrane plates 42 are respectively provided with first ceramic membrane water outlets 421 and second ceramic membrane water outlets 422 at two ends, the first ceramic membrane water outlets 421 and the second ceramic membrane water outlets 422 are connected with a pump 46 through a water outlet device II; after sewage is filtered through the ceramic membrane plates 42, solid particulate matters are left outside the ceramic membrane plates 42, and filtered water flows into the first ceramic membrane water outlets 421 and the second ceramic membrane water outlets 422, and then flows into the water outlet device II from the first ceramic membrane water outlets 421 and the second ceramic membrane water outlets 422, so that the flow capacity of water is large under the negative pressure suction of the pump 46, and the water can be rapidly and efficiently filtered.

[0050] The water outlet device II comprises a plurality of first water outlet pipes 43, second water outlet pipes 44 and third water outlet pipes 45; the first ceramic membrane water outlets 421 are in communication with the first water outlet pipes 43 directly or through connecting pipes 47, and the second ceramic membrane water outlets 422 are in communication with the second water outlet pipes 44 directly or through the connecting pipes 47; one end of the third water outlet pipes 45 is in communication with the first water outlet pipes 43, and the other end of the third water outlet pipes 45 is in communication with the second water outlet pipes 44; the first water outlet pipes 43 and the second water outlet pipes 44 are closed at ends away from the third water outlet pipes 45, and the third water outlet pipes 45 are connected with the pump 46; under the suction of the pump 46, sewage directly enters the first water outlet pipes 43 through the first ceramic membrane water outlets 421 or enters the first water outlet pipes 43 after passing through the connecting pipes 47, sewage directly enters the second water outlet pipes 44 through the second ceramic membrane water outlets 422 or enters the second water outlet pipes 44 after passing through the connecting pipes 47, and finally, clean water in the first water outlet pipes 43 and the second water outlet pipes 44 flows into the third water outlet pipes 45, so that filtered water is discharged from the ceramic membrane plates 42 to the outside of the ceramic membrane assembly 4, and finally discharged to the outside of the filter tank 1.

[0051] The water outlet device II is located in the filter tank 1, and the passive impeller 313 is located between the first water outlet pipe 43 and the coagulation I area 21; the water flow between the first water outlet pipe 43 and the coagulation I area 21 is stirred by the passive impeller 313, so that the surface of the ceramic membrane plate 42 is continuously impacted, the sewage can be quickly and efficiently filtered, and the solid particulate matter can be dispersed to avoid forming a whole filter cake layer.

[0052] The lower end of the filter tank 1 is provided with a discharge port; when the filtration is completed, the impurities in the filter tank 1 are discharged through the discharge port, so that the cleanliness of the filter tank 1 is ensured.

[0053] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A ceramic membrane water purification treatment device that is less susceptible to membrane fouling, characterized by: The utility model provides a filter tank (1), stirring device (3), the outside of filter tank (1) is provided with coagulation sedimentation tank (2), coagulation sedimentation tank (2) is provided with water inlet (212), coagulation sedimentation tank (2) and filter tank (1) are directly or through water outlet device one -way communication, The stirring device (3) includes a plurality of impeller pushing assemblies (31), the impeller pushing assembly (31) includes a rotating shaft (311), a driving impeller (312), and a driven impeller (313), a plurality of driving impellers (312) are arranged in the coagulation sedimentation tank (2), and a plurality of driven impellers (313) are arranged in the filter tank (1). The filter tank (1) is provided with a ceramic membrane assembly (4), and the ceramic membrane assembly (4) is connected with a water outlet device two.

2. The ceramic membrane water purification apparatus according to claim 1, wherein: The coagulation sedimentation tank (2) includes a coagulation I area (21), a coagulation sedimentation II area (22), and a sedimentation III area (23), the coagulation I area (21), the coagulation sedimentation II area (22), and the sedimentation III area (23) are sequentially connected, the coagulation I area (21), the coagulation sedimentation II area (22), and the sedimentation III area (23) form a semi-enclosed structure outside the filter tank (1), and the filter tank (1) is located in the semi-enclosed structure.

3. The ceramic membrane water purification apparatus according to claim 2, wherein: The water inlet (212) is arranged at one end of the coagulation I area (21), the sedimentation III area (23) is provided with a coagulation zone water outlet (233), and the coagulation zone water outlet (233) is directly or through water outlet device one -way communication with the filter tank (1); The sedimentation III area (23) is also provided with a coagulation zone sludge discharge port (232), and the coagulation zone sludge discharge port (232) is located below the coagulation zone water outlet (233).

4. The ceramic membrane water purification apparatus according to claim 3, wherein: The coagulation zone sludge discharge port (232) is located at the bottom of the filter tank (1).

5. The ceramic membrane water purification apparatus according to claim 4, wherein: The water outlet device one includes a water outlet groove (231), the water inlet of the water outlet groove (231) is connected with the coagulation zone water outlet (233), and the water outlet of the water outlet groove (231) is connected with the filter tank (1).

6. The ceramic membrane water purification apparatus according to claim 2, wherein: One end of the rotating shaft (311) is connected with the driving impeller (312), and the other end of the rotating shaft (311) is connected with the driven impeller (313). The driving impeller (312) is arranged in the coagulation I area (21), and the driven impeller (313) is arranged in the filter tank (1).

7. The ceramic membrane water purification apparatus according to claim 6, wherein: A plurality of guide plates (211) are arranged on the coagulation I area (21), and the guide plates (211) are arranged between the driving impellers (312). The guide plates (211) are arranged in parallel.

8. The ceramic membrane water purification apparatus according to claim 1, wherein: The ceramic membrane assembly (4) includes a support device (41), and a plurality of ceramic membrane plates (42) are arranged on the support device (41); A plurality of ceramic membrane plates (42) are vertically arranged in the filter tank (1), the ceramic membrane plates (42) are parallel to each other, the ceramic membrane plates (42) are not parallel to the coagulation I area (21), and gaps for water passing through are arranged between adjacent ceramic membrane plates (42).

9. The ceramic membrane water purification apparatus according to claim 8, wherein: The ceramic membrane plate (42) is respectively provided with a first ceramic membrane water outlet (421) and a second ceramic membrane water outlet (422) at two ends, the first ceramic membrane water outlet (421) and the second ceramic membrane water outlet (422) are connected with a pump (46) through a water outlet device two.

10. The ceramic membrane water purification apparatus according to claim 9, wherein: The water outlet device two comprises a plurality of first water outlet pipes (43), second water outlet pipes (44) and third water outlet pipes (45), the first ceramic membrane water outlet (421) is in communication with the first water outlet pipe (43) directly or through a connecting pipe (47), the second ceramic membrane water outlet (422) is in communication with the second water outlet pipe (44) directly or through the connecting pipe (47); One end of the third water outlet pipe (45) is in communication with the first water outlet pipe (43), the other end of the third water outlet pipe (45) is in communication with the second water outlet pipe (44), the first water outlet pipe (43) and the second water outlet pipe (44) are closed at the ends away from the third water outlet pipe (45), and the third water outlet pipe (45) is connected with the pump (46).

11. The ceramic membrane water purification apparatus according to claim 10, wherein: The water outlet device two is located in the filter tank (1), and the passive impeller (313) is located between the first water outlet pipe (43) and the coagulation I area (21).

12. The ceramic membrane water purification apparatus according to claim 1, wherein: The lower end of the filter tank (1) is provided with a vent (11).

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