CN217025687U - Advanced treatment device for micro-polluted lake water - Google Patents

Abstract

The application relates to a pollute lake water advanced treatment unit a little, it relates to the water treatment facilities field, and it is including handling the case and being used for supporting handle the support of case, be equipped with the inlet tube on handling the case, the bottom of handling the case is equipped with the aeration subassembly that is used for bulging ozone, the top of handling the case is equipped with the input subassembly that is used for puting in active carbon powder, it is equipped with membrane bioreactor to handle incasement portion, be equipped with on the membrane bioreactor and be used for the suction subassembly that the clear water after handling aspirates out the processing case. This application has easy operation, labour saving and time saving, realizes good treatment effect, improves the intensification degree to sewage treatment, takes up an area of little effect.

Description

Advanced treatment device for micro-polluted lake water

Technical Field

The application relates to the field of water treatment devices, in particular to a micro-polluted lake water advanced treatment device.

Background

The main pollutants of the drinking water source area in China are ammonia nitrogen and organic matters. Industrial, agricultural and municipal sewage discharge are the major sources of ammonia nitrogen. Ammonia nitrogen is used as a main existence form of an inorganic nitrogen source in a water body, and has irreparable responsibility for pollution of the current water environment.

In the related art, people often add a purifying oxidant into sewage, impurities in the sewage can be changed into other compounds to be precipitated through chemical reaction between the impurities and the oxidant, and finally, the precipitate is filtered to obtain purified water. The sewage treatment mode can not completely remove impurities in the sewage, the process is complicated, a large amount of time is consumed, a large amount of sewage is difficult to purify, and the purification efficiency is low.

Therefore, there is a need to develop an integrated sewage treatment apparatus which can achieve a good treatment effect on impurities in sewage and is simple in operation, time-saving and labor-saving.

SUMMERY OF THE UTILITY MODEL

In order to overcome the purification degree of present sewage treatment mode not high, complex operation and the problem that wastes time and energy, this application provides a pollute lake water advanced treatment unit a little.

The application provides a little pollute lake water advanced treatment unit adopts following technical scheme:

the utility model provides a pollute lake water advanced treatment unit a little, is including handling the case and being used for supporting handle the support of case, be equipped with the inlet tube on handling the case, the bottom of handling the case is equipped with the aeration subassembly that is used for bulging ozone, the top of handling the case is equipped with the input subassembly that is used for puting in active carbon powder, it is equipped with membrane bioreactor to handle incasement portion, be equipped with on the membrane bioreactor and be used for the suction subassembly of handling the case with the clear water suction after handling.

Through adopting above-mentioned technical scheme, when carrying out the degree of depth clearance to sewage, at first let in pending sewage through the inlet tube and handle the incasement, then start the aeration subassembly, the aeration subassembly swells ozone, utilize the oxidation property of ozone to handle the water of incasement, meanwhile, start and put in the subassembly, put in activated carbon powder to handling the incasement, utilize activated carbon powder to handle sewage, utilize suction subassembly to carry out the negative pressure to membrane bioreactor at last and draw water, good sewage treatment effect has been realized, the operation is thus simple, time saving and labor saving.

In a specific embodiment, put in the subassembly including throwing workbin, pan feeding pipe, discharging pipe and powder butterfly valve, throw the workbin with handle the top fixed connection of case, the pan feeding pipe sets up throw the top of workbin and with throw the workbin intercommunication, the discharging pipe sets up throw the bottom of workbin and stretch into handle incasement portion, the powder butterfly valve with the coaxial fixed connection of discharging pipe.

Through adopting above-mentioned technical scheme, when handling the incasement and putting in active carbon powder, open powder butterfly valve, the active carbon powder that sets up in the case of throwing drops through the discharging pipe and gets into and handle the incasement, when needs carry out the material loading to the case of throwing, through the pan feeding pipe material loading.

In a specific possible implementation scheme, a blocking plate for blocking the feeding pipe is arranged on the feeding pipe, a drying piece is arranged on the side wall of the blocking plate facing the inside of the feeding box, and a blocking strip is arranged on the circumferential direction of the blocking plate.

Through adopting above-mentioned technical scheme, utilize the shutoff board to seal throwing the workbin, and utilize dry piece to absorb the steam of throwing the workbin, utilize the shutoff strip to keep apart the shutoff board and throw the workbin inside, avoid active carbon powder to wet the caking as far as possible, influence active carbon powder's adsorption effect.

In a specific embodiment, the inside of handling the case is equipped with a plurality of stirring subassemblies, the stirring subassembly includes stirring rake, gear, rack and cylinder, the stirring rake with the coaxial fixed connection of gear, the stirring rake with the interior diapire of handling the case rotates the connection, the rack with gear engagement, the rack with the interior diapire of handling the case slides and connects, the cylinder sets up it is outside to handle the case, the piston rod of cylinder with the one end fixed connection of rack.

Through adopting above-mentioned technical scheme, when throwing in activated carbon powder to the processing case, because sewage exists surface tension, make partial activated carbon powder float on sewage, at this moment, start the cylinder, the piston rod of cylinder drives the rack and slides at the interior diapire of processing case, rack and gear engagement, the gear rotates under the drive of rack, and then the gear drives the stirring rake and rotates, the stirring rake stirs the sewage of processing incasement, make activated carbon powder and sewage carry out abundant mixture, be favorable to adsorbing the organic pollutant like humic acid etc. of aquatic, and then realize the high-efficient treatment to the slightly polluted water.

In a specific embodiment, the suction assembly comprises a water suction pump, a water suction pipe and a clean water tank, one end of the water suction pipe is communicated with the water collecting pipe of the membrane bioreactor, the other end of the water suction pipe is communicated with the water inlet end of the water suction pump, and the water outlet end of the water suction pump is communicated with the clean water tank.

By adopting the technical scheme, the water suction pump is started, the negative pressure caused by the water suction pump accelerates the water filtering speed of the membrane bioreactor, and the filtered water is conveyed into the clean water tank, so that a good energy-saving effect is realized.

In a specific implementation scheme, a back flushing component used for back flushing the membrane bioreactor is arranged on the membrane bioreactor and comprises a flushing pump and a connecting pipe, one end of the connecting pipe is communicated with the clean water tank, the other end of the connecting pipe is communicated with the water inlet end of the flushing pump, and the water outlet end of the flushing pump faces membrane cloth of the membrane bioreactor.

By adopting the technical scheme, when the membrane bioreactor adsorbs impurities to influence the negative pressure suction water production efficiency, the flushing pump is started, the flushing pump pumps clean water in the clean water tank into the connecting pipe, and the clean water in the connecting pipe is utilized to flush membrane cloth of the membrane bioreactor, so that the reverse flushing of the membrane bioreactor is realized, and the water is saved.

In a specific possible embodiment, the aeration assembly includes a gas cylinder, a gas pump, an aeration pipe and a plurality of aeration heads, the aeration pipe is disposed inside the treatment tank, the plurality of aeration heads are fixedly connected with the aeration pipe, the gas cylinder and the gas pump are both disposed outside the treatment tank, the gas cylinder is used for containing ozone, the gas cylinder is communicated with the gas inlet end of the gas pump, and the gas outlet end of the gas pump is communicated with the aeration pipe.

Through adopting above-mentioned technical scheme, when to handling the aeration of incasement portion, start the air pump, the air pump is gone into in the aeration pipe with the ozone pump in the gas cylinder, then through a plurality of aeration heads to handling the aeration of incasement portion, the aeration head disperses ozone into a plurality of ozone bubbles, the ozone bubble passes through liquid diffusion, the area of contact between ozone bubble and the sewage of handling the incasement has been increased, realize the good oxidation to the impurity in the sewage, utilize the mud cake layer resistance on the membrane cloth surface on the reducible membrane bioreactor of ozone, delay the membrane cloth pollution on the membrane bioreactor.

In a specific implementation mode, a sludge discharge pipe is arranged at the bottom of the treatment tank, and a ball valve is coaxially and fixedly connected to the sludge discharge pipe.

Through adopting above-mentioned technical scheme, by the bottom of absorbent impurity deposit handling the case under the action of gravity, at this moment, open the ball valve, impurity is discharged from the mud pipe under the action of gravity, has realized the clearance to handling incasement impurity.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the sewage is deeply cleaned, firstly, the sewage to be treated is introduced into the treatment tank through the water inlet pipe, then the aeration component is started, the aeration component bleeds ozone, the water in the treatment tank is treated by utilizing the oxidation property of the ozone, meanwhile, the feeding component is started, activated carbon powder is fed into the treatment tank, the sewage is treated by utilizing the activated carbon powder, and finally, the membrane bioreactor is pumped by utilizing the suction component under negative pressure, so that a good sewage treatment effect is realized, the operation is simple, and the time and the labor are saved;

2. when putting activated carbon powder into the treatment box, because sewage exists surface tension, make partial activated carbon powder float on sewage, at this moment, start the cylinder, the piston rod of cylinder drives the rack and slides at the interior diapire of treatment box, rack and gear engagement, the gear rotates under the drive of rack, and then the gear drives the stirring rake and rotates, the stirring rake stirs the sewage in the treatment box, make activated carbon powder and sewage carry out abundant mixture, be favorable to adsorbing the organic pollutant like humic acid in the aquatic, and then realize the high-efficient processing to the micro-polluted water, and can get rid of ammonia nitrogen and organic matter simultaneously at low temperature.

Drawings

FIG. 1 is a schematic view of the overall structure of a advanced treatment apparatus for micro-polluted lake water in the embodiment of the present application.

Fig. 2 is a cross-sectional view taken along plane a-a of fig. 1.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of fig. 2 at B.

Description of the reference numerals: 1. a treatment box; 2. a support; 3. a support leg; 4. a stirring assembly; 41. a stirring paddle; 42. a gear; 43. a rack; 44. a cylinder; 5. a back flushing assembly; 51. a flush pump; 53. a connecting pipe; 6. an aeration component; 61. a gas cylinder; 62. an air pump; 63. an aeration pipe; 64. an aeration head; 7. a delivery assembly; 71. a feeding box; 72. a feeding pipe; 73. a discharge pipe; 74. a powder butterfly valve; 8. a suction assembly; 81. a water pump; 82. a water pumping pipe; 83. a clean water tank; 9. a membrane bioreactor; 10. a mounting frame; 11. mounting a plate; 12. supporting legs; 13. a plugging plate; 14. drying the workpiece; 15. a groove; 16. a plugging strip; 17. an aeration branch pipe; 18. a water inlet pipe; 19. a sludge discharge pipe; 20. a vertical tube; 21. an inclined tube; 22. a ball valve; 23. a handle.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a device for deeply treating micro-polluted lake water. Referring to fig. 1 and 2, a little pollution lake water advanced treatment unit is including handling case 1 and support 2, support 2 includes four landing legs 3, four landing legs 3 evenly distributed are in the bottom surface of handling case 1, fixedly connected with inlet tube 18 on the lateral wall of handling case 1, inlet tube 18 and the intercommunication of handling case 1 lateral wall, the bottom of handling case 1 is equipped with aeration subassembly 6, aeration subassembly 6 is used for to handling the inside ozone that bloates of case 1, be equipped with the input subassembly 7 that is used for puting in active carbon powder on the top surface of handling case 1, handle the inside membrane bioreactor 9 that is equipped with of case 1, be equipped with on the membrane bioreactor 9 and be used for sucking out the suction subassembly 8 of handling case 1 with the clear water that filters out in the membrane bioreactor 9.

When carrying out the degree of depth clearance to sewage, at first let in the sewage of pending through inlet tube 18 and handle in the case 1, then start aeration subassembly 6, aeration subassembly 6 is to handling 1 interior ozone that drums into, start to throw in subassembly 7, utilize and throw in subassembly 7 to handle 1 interior throwing in active carbon powder, utilize suction subassembly 8 to carry out the negative pressure to membrane bioreactor 9 at last and draw water, take out the water of handling outside the case 1, good water treatment has been realized, the operation is thus simple, time saving and labor saving.

Referring to fig. 3, the feeding assembly 7 includes a feeding box 71 for storing activated carbon powder, a feeding pipe 72, a discharging pipe 73, and a powder butterfly valve 74, wherein a top wall of the feeding box 71 is communicated with the feeding pipe 72, a bottom wall of the feeding box 71 is communicated with the discharging pipe 73, the feeding box 71 is fixedly connected with the top of the processing box 1 through a mounting frame 10, the mounting frame 10 includes a mounting plate 11 and four supporting legs 12, the mounting plate 11 is abutted against a bottom surface of the feeding box 71, a side wall of the mounting plate 11 far away from the feeding box 71 is fixedly connected with the four supporting legs 12, the four supporting legs 12 are abutted against a top surface of the processing box 1, the powder butterfly valve 74 is coaxially and fixedly connected with the discharging pipe 73, when the powder butterfly valve 74 is opened, the activated carbon powder in the feeding box 71 falls into the processing box 1 through the discharging pipe 73 under the action of gravity, a blocking plate 13 for blocking the feeding pipe 72 is arranged in the feeding pipe 72, a drying piece 14 is arranged on a side wall of the blocking plate 13 facing the inside of the feeding box 71, in this application embodiment, dry piece 14 is the built-in dry box that has quick lime, it has seted up recess 15 on the end wall of handling case 1 to keep away from to pan feeding pipe 72, the lateral wall of shutoff board 13 and the diapire butt of recess 15, be equipped with blocking strip 16 between the cell wall of shutoff board 13 and recess 15, utilize shutoff board 13 and blocking strip 16 to carry out the shutoff to throwing feed box 71, fixed connection is equipped with handle 23 on the lateral wall that shutoff board 13 kept away from the recess 15 diapire, avoid as far as possible the steam in the air to get into and lead to throwing the activated carbon powder caking in the feed box 71, and utilize dry piece 14 to absorb the steam in throwing feed box 71, the good save effect of activated carbon powder in throwing feed box 71 has been realized.

When the feeding box 71 needs to be fed, the blocking plate 13 is opened, and the activated carbon powder is added through the feeding pipe 72.

Referring to fig. 2, the membrane bioreactor 9 is positioned on the inner wall of the feeding box 71 through the connecting support 2, the membrane bioreactor 9 is provided with a backwashing assembly 5 for backwashing the membrane bioreactor 9, the backwashing assembly 5 comprises a washing pump 51, a clean water tank 83 and a connecting pipe 53, the suction assembly 8 comprises a water suction pump 81 and a water suction pipe 82, the clean water tank 83 is arranged outside the feeding box 71, one end of the connecting pipe 53 is communicated with the clean water tank 83, the other end of the connecting pipe 53 is communicated with the water inlet end of the washing pump 51, the water outlet end of the washing pump 51 faces membrane cloth of the membrane bioreactor 9, one end of the water suction pipe 82 is communicated with the water collection pipe of the membrane bioreactor 9, the other end of the water suction pipe 82 is communicated with the water inlet end of the water suction pump 81, and the water outlet end of the water suction pump 81 is communicated with the clean water tank 83.

When the clean water in the membrane bioreactor 9 is pumped, the water suction pump 81 is started, and the water suction pump 81 generates negative pressure in the membrane bioreactor 9, so that the water filtration rate of the membrane bioreactor 9 is accelerated, and a good energy-saving effect is achieved; when impurities are adsorbed on the membrane bioreactor 9 to affect the negative pressure suction water production efficiency of the membrane bioreactor 9, the membrane bioreactor 9 needs to be reversely flushed, at the moment, the flushing pump 51 is started to flush the clean water pump in the clean water tank 83 to the membrane cloth of the membrane bioreactor 9 and flush the outer wall of the membrane cloth of the membrane bioreactor 9, the treated sewage is utilized to reversely flush the membrane bioreactor 9, the membrane cloth pollution of the membrane bioreactor 9 is reduced, water is saved, and the improvement of the water production efficiency is facilitated.

Referring to fig. 2, aeration subassembly 6 includes gas cylinder 61, air pump 62, aeration pipe 63 and a plurality of aeration head 64, aeration pipe 63 sets up the inside one side that is close to the interior diapire of processing case 1, aeration pipe 63 is the inside two branch aeration pipes 17 that still are equipped with of square ring form and square ring, a plurality of aeration heads 64 and aeration pipe 63, branch aeration pipe 17 keeps away from the lateral wall fixed connection and the evenly distributed of handling the interior diapire of case 1, be favorable to increasing the quantity of the inside aeration head 64 of processing case 1, and then be favorable to realizing good aeration effect, gas cylinder 61 and air pump 62 all set up in processing case 1 outsidely, gas cylinder 61 is used for holding ozone, the output of gas cylinder 61 and the inlet end intercommunication of air pump 62, the end and the aeration pipe 63 intercommunication of giving vent to anger of air pump 62.

When the inside of the treatment box 1 is aerated, the air pump 62 is started, the air pump 62 pumps out ozone in the air bottle 61 and feeds the ozone into the aeration pipe 63, the aeration pipe 63 aerates the inside of the treatment box 1, the aeration pipe 63 breaks the fed ozone into a plurality of fine ozone bubbles, the ozone bubbles move to the top wall of the treatment box 1 under the action of buoyancy, the contact area between the ozone bubbles and sewage in the treatment box 1 is increased, impurities in the sewage are further attracted, and good oxidation effect on the impurities in the sewage is realized; the ozone bubbles can reduce the resistance of a mud cake layer on the surface of the membrane cloth of the membrane bioreactor 9 and delay the pollution on the surface of the membrane bioreactor 9.

When sewage is treated, on one hand, the activated carbon powder is utilized to adsorb low molecular organic matters generated by ozone oxidation, the release of ozone is reduced, and the ozone is reduced into oxygen, so that the oxygen supply amount in the sewage is increased; on the other hand, the oxygen supply effect of ozone is utilized to grow and propagate a large number of aerobic bacteria in a carbon bed formed by the activated carbon powder, so that the removal effect of ammonia nitrogen in the sewage is further improved; finally, oxygen generated by ozone decomposition can further enhance the aeration mass transfer effect; utilize and handle case 1 and hold membrane bioreactor 9, improved the intensification degree to sewage treatment, take up an area of for a short time, utilize negative pressure suction formula to produce water, it is more energy-conserving.

Referring to fig. 1 and 4, three sets of stirring assemblies 4 are disposed on the inner bottom wall of the treatment tank 1, the three sets of stirring assemblies 4 are disposed in the middle of the inner bottom wall of the treatment tank 1 and are uniformly distributed along the axial direction of the aeration branch pipe 17, the stirring assemblies 4 are used for stirring the sewage in the treatment tank 1 so as to fully mix the charged activated carbon powder with the sewage in the treatment tank 1, each stirring assembly 4 comprises a stirring paddle 41, a gear 42, a rack 43 and a cylinder 44, the stirring paddle 41 is rotatably connected with the inner bottom wall of the treatment tank 1, the gear 42 and the stirring paddle 41 are coaxially and fixedly connected towards one side of the inner bottom wall of the treatment tank 1, the rack 43 slides on the inner bottom wall of the treatment tank 1 along the axial direction of the aeration branch pipe 17, the rack 43 is engaged with the gear 42, one end of the rack 43 is fixedly connected with a piston rod of the cylinder 44, and the cylinder 44 is fixedly connected with the outer wall of the treatment tank 1.

When activated carbon powder is put into the treatment tank 1, partial activated carbon powder floats on a water body due to surface tension of sewage, when the activated carbon powder put into the treatment tank 1 is mixed with the sewage, the air cylinder 44 is started, the piston rod of the air cylinder 44 drives the rack 43 to slide along the axial direction of the aeration branch pipe 17, the rack 43 is meshed with the gear 42, the rack 43 drives the gear 42 to rotate, the gear 42 drives the stirring paddle 41 to rotate, and the stirring paddle 41 stirs the sewage in the treatment tank 1, so that the sewage and the activated carbon powder are fully mixed, the activated carbon powder is favorably used for adsorbing organic pollutants such as humic acid and the like in the water, and the high-efficiency treatment of micro-polluted water is further realized.

Referring to fig. 1, the bottom of the treatment box 1 is provided with a sludge discharge pipe 19, the sludge discharge pipe 19 comprises a vertical pipe 20 and an inclined pipe 21, one end of the vertical pipe 20 is communicated with the bottom of the treatment box 1, the other end of the vertical pipe 20 is communicated with the inclined pipe 21, and the vertical pipe 20 is coaxially and fixedly connected with a ball valve 22. Impurity deposits at the bottom of handling case 1 under the action of gravity, and at this moment, opens ball valve 22, and impurity via vertical pipe 20 to inclined pipe 21 and by inclined pipe 21 keep away from the one end of handling case 1 and discharge, has realized the clearance to handling the inside impurity of case 1.

The implementation principle of the advanced treatment device for the slightly polluted lake water in the embodiment of the application is as follows: when sewage is deeply cleaned, firstly, sewage to be treated is introduced into the treatment tank 1 through the water inlet pipe 18, the powder butterfly valve 74 is opened, activated carbon powder arranged in the feeding tank 71 falls into the treatment tank 1 through the discharging pipe 73, the air cylinder 44 is started again, a piston rod of the air cylinder 44 drives the rack 43 to slide on the inner bottom wall of the treatment tank 1, the rack 43 is meshed with the gear 42, the gear 42 is driven by the rack 43 to rotate, then the gear 42 drives the stirring paddle 41 to rotate, the stirring paddle 41 stirs the sewage in the treatment tank 1, so that the activated carbon powder and the sewage are fully mixed, finally, the water suction pump 81 is started, negative pressure caused by the water suction pump 81 accelerates the water filtration rate of the membrane bioreactor 9, treated water is pumped out of the treatment tank 1, and a good water body treatment effect is achieved.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a little pollution lake water advanced treatment unit which characterized in that: including handling case (1) and being used for supporting handle support (2) of case (1), be equipped with inlet tube (18) on handling case (1), the bottom of handling case (1) is equipped with aeration subassembly (6) that are used for bubbling ozone, the top of handling case (1) is equipped with input subassembly (7) that are used for putting in active carbon powder, handle case (1) inside and be equipped with membrane bioreactor (9), be equipped with on membrane bioreactor (9) and be used for the clear water suction after handling out suction subassembly (8) of handling case (1).

2. The advanced treatment device for the micro-polluted lake water as claimed in claim 1, wherein: put in subassembly (7) including throwing workbin (71), pan feeding pipe (72), discharging pipe (73) and powder butterfly valve (74), throw workbin (71) with the top fixed connection who handles case (1), pan feeding pipe (72) set up throw the top of workbin (71) and with throw workbin (71) intercommunication, discharging pipe (73) set up throw the bottom of workbin (71) and stretch into handle case (1) inside, powder butterfly valve (74) with the coaxial fixed connection of discharging pipe (73).

3. The advanced treatment device for the micro-polluted lake water as claimed in claim 2, wherein: be equipped with on pan feeding pipe (72) and be used for the shutoff board (13) of pan feeding pipe (72), shutoff board (13) orientation be equipped with dry (14) on the inside lateral wall of batch charging box (71), the circumference of shutoff board (13) is equipped with shutoff strip (16).

4. The advanced treatment device for the micro-polluted lake water as claimed in claim 1, wherein: handle the inside of case (1) and be equipped with a plurality of stirring subassemblies (4), stirring subassembly (4) are including stirring rake (41), gear (42), rack (43) and cylinder (44), stirring rake (41) with the coaxial fixed connection of gear (42), stirring rake (41) with the interior diapire of handling case (1) rotates to be connected, rack (43) with gear (42) meshing, rack (43) with the interior diapire of handling case (1) slides and connects, cylinder (44) set up it is outside to handle case (1), the piston rod of cylinder (44) with the one end fixed connection of rack (43).

5. The advanced treatment device for the micro-polluted lake water as claimed in claim 1, wherein: suction subassembly (8) include suction pump (81), drinking-water pipe (82) and clean water basin (83), the one end of drinking-water pipe (82) with the collector pipe intercommunication of membrane bioreactor (9), the other end of drinking-water pipe (82) with the end intercommunication of intaking of suction pump (81), the play water end of suction pump (81) with clean water basin (83) intercommunication.

6. The advanced treatment device for the micro-polluted lake water as claimed in claim 5, wherein: be equipped with on membrane bioreactor (9) and be used for right membrane bioreactor (9) carry out backwash's backwash subassembly (5), backwash subassembly (5) are including flush pump (51) and connecting pipe (53), the one end of connecting pipe (53) with clean water basin (83) intercommunication, the other end of connecting pipe (53) with the end intercommunication of intaking of flush pump (51), the play water end orientation of flush pump (51) the membrane cloth of membrane bioreactor (9).

7. The advanced treatment device for the slightly polluted lake water as claimed in claim 1, wherein: aeration subassembly (6) include gas cylinder (61), air pump (62), aeration pipe (63) and a plurality of aeration head (64), aeration pipe (63) set up the inside of handling case (1), a plurality of aeration head (64) with aeration pipe (63) fixed connection, gas cylinder (61) with air pump (62) all set up the outside of handling case (1), gas cylinder (61) are used for holding ozone, gas cylinder (61) with the inlet end intercommunication of air pump (62), the end of giving vent to anger of air pump (62) with aeration pipe (63) intercommunication.

8. The advanced treatment device for the micro-polluted lake water as claimed in claim 1, wherein: the bottom of the treatment box (1) is provided with a sludge discharge pipe (19), and the sludge discharge pipe (19) is coaxially and fixedly connected with a ball valve (22).

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