CN212356840U - Immersion type ultrafiltration membrane short-flow water treatment device adopting inclined pipe - Google Patents

Abstract

The utility model provides an immersion ultrafiltration membrane short-flow water treatment device adopting an inclined tube, belonging to the technical field of water purification treatment, the immersion ultrafiltration membrane short-flow water treatment device adopting the inclined tube comprises a mixing tank, wherein a flocculation tank, an ultrafiltration membrane tank and a clean water tank are sequentially arranged on the right side of the mixing tank, the mixing tank is communicated with the flocculation tank through a first communicating pipeline, a flocculant feeding port is fixed at the upper end of the first communicating pipeline, the lower end of the flocculant feeding port penetrates through the upper inner wall of the first communicating pipeline, the flocculation tank is communicated with the ultrafiltration membrane tank through a second communicating pipeline, an ultrafiltration membrane and the inclined tube are sequentially fixed in the ultrafiltration membrane tank from top to bottom, the ultrafiltration membrane tank is communicated with the clean water tank through a third communicating pipeline, and the device enables water to be subjected to multiple filtration and disinfection, and then the water is deeply filtered by the ultrafiltration membrane, so that the ultrafiltration membrane is not easy to block, and the working efficiency of the short-flow water purification treatment process is greatly increased.

Description

Immersion type ultrafiltration membrane short-flow water treatment device adopting inclined pipe

Technical Field

The utility model belongs to the technical field of water purification treatment, concretely relates to adopt immersion milipore filter of pipe chute short flow water treatment facilities.

Background

The application of the ultrafiltration membrane process in the municipal water purification industry can be generally divided into a long-flow ultrafiltration membrane process and a short-flow ultrafiltration membrane process according to different flows; the long flow generally refers to the access of an ultrafiltration membrane process after the conventional coagulation, precipitation and even filtration processes; the short flow generally refers to that raw water directly enters an immersed ultrafiltration membrane for membrane filtration after being subjected to proper pretreatment, and simultaneously, concentrated water recovery and sludge concentration are completed in a membrane pool, and then the raw water enters a clean water pool.

In recent two years, the short-flow water purification treatment process taking the immersion ultrafiltration membrane as the core is more and more widely applied, a good operation effect is obtained in practical engineering, and the feasibility and the success of the process are fully proved. In the short-flow water purification treatment process taking an immersion ultrafiltration membrane as a core, raw water is coagulated and then directly enters a membrane pool for treatment, a membrane pollution mechanism can be effectively improved, but a flocculating agent increases the particle size and easily causes membrane pores to be blocked, so that the water yield is slowed down, and the operation efficiency of the short-flow water purification treatment process is greatly influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adopt immersion ultrafiltration membrane short process water treatment facilities of pipe chute aims at solving the flocculating agent among the prior art and has increased the particle size, leads to the membrane pore to block easily to make the water yield slow down, influenced the problem of the operating efficiency of short process water purification treatment process greatly.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an adopt immersion milipore filter short flow water treatment facilities of pipe chute, includes the mixing tank, the right side of mixing tank is equipped with flocculation basin, milipore filter pond and clean water basin in proper order, communicate through first intercommunication pipeline between mixing basin and the flocculation basin, the upper end of first intercommunication pipeline is fixed with the flocculating agent feed inlet, the lower extreme of flocculating agent feed inlet runs through the upper inner wall of first intercommunication pipeline, communicate through second intercommunication pipeline between flocculation basin and the milipore filter pond, top-down is fixed with milipore filter and pipe chute in proper order in the milipore filter pond, communicate through third intercommunication pipeline between milipore filter pond and the clean water basin, the right-hand member of clean water basin is fixed with the delivery port, and the left end of delivery port runs through the right inner wall of clean water basin, install the suction pump on the third intercommunication pipeline, the left end of mixing basin is fixed with the inlet tube, and the right-hand member of inlet tube runs through the left, the upper end of inlet tube is fixed with first sterile water inlet pipe, the upper inner wall of inlet tube is run through to the lower extreme of first sterile water inlet pipe, all be equipped with rabbling mechanism in mixing tank and the flocculation basin. The method aims to solve the problems that the flocculant in the prior art increases the particle size and easily causes the blockage of membrane pores, so that the water yield is slowed down, and the operation efficiency of a short-flow water purification treatment process is greatly influenced.

In order to make mix pond and flocculation basin water and sterile water and flocculating agent fully to fuse, as the utility model relates to an it is preferred, every group rabbling mechanism includes motor, pivot and helical blade, two the motor is fixed in respectively mixes the upper end in pond and flocculation basin, and the output shaft of two motors runs through respectively and mix the last inner wall and the downwardly extending in pond and flocculation basin, two fixed, two between the pivot respectively with the output shaft of two motors helical blade is fixed in the surface of two pivots respectively.

Impurity and floater in order to make former aquatic are convenient for to be filtered for water is cleaner, conduct the utility model relates to an it is preferred, be fixed with the filter screen between the inner wall of mixing the pond, the filter screen is located the downside of mixing the pond pivot, be fixed with antifouling fence between the inner wall of flocculation basin, antifouling fence is located the downside of flocculation basin pivot.

In order to make sediments such as mixed pond, flocculation basin and ultrafiltration membrane pond impurity, mud can better concentrate in the bottom, the discharge of being convenient for, as the utility model relates to an it is preferred, the lower extreme that mixes pond, flocculation basin and ultrafiltration membrane pond is "arc" form, the lower extreme that mixes pond, flocculation basin and ultrafiltration membrane pond is fixed with third blow off pipe, second blow off pipe and first blow off pipe respectively, the downside of third blow off pipe, second blow off pipe and first blow off pipe is equipped with total calandria, communicate respectively between total calandria and third blow off pipe, second blow off pipe and the first blow off pipe.

In order to make this device water is difficult by polluting, the difficult automatic outflow of water in mixing pond, flocculation basin and the milipore filter pond simultaneously is difficult for causing unnecessary extravagant, as the utility model relates to an it is preferred, all install the valve on first disinfection water inlet pipe, flocculating agent feed inlet, third blow off pipe, second blow off pipe and the first blow off pipe.

In order to make the difficult secondary pollution that produces of water after straining, as the utility model relates to an it is preferred, the upper end of third intercommunication pipeline is fixed with second sterilized water feed inlet, the lower extreme of second sterilized water feed inlet runs through the last inner wall of third intercommunication pipeline, install the valve on the second sterilized water feed inlet.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the scheme is that raw water is firstly fed into a mixing tank through a water inlet pipe, a valve on a first disinfectant feeding pipe is opened, disinfectant is added from the first disinfectant feeding pipe, motors in two stirring mechanisms are started, output shafts of the motors drive rotating shafts to rotate, the rotating shafts drive spiral blades to rotate, the raw water and the disinfectant in the mixing tank are fully fused together through the spiral blades, the water is purified, partial large impurities in the raw water are firstly filtered and precipitated to the lower inner wall of the mixing tank through a filter screen arranged in the mixing tank, when the water in the mixing tank reaches the height of a first communication pipeline, the water enters the flocculation tank through the first communication pipeline, a flocculating agent is added into the first communication pipeline from a flocculating agent feeding port, then the flocculating agent is fully stirred through the spiral blades in the flocculation tank, and the flocculating agent and the water are fully fused, through the anti-fouling fence arranged in the flocculation tank, floating objects in raw water are further blocked and filtered by the anti-fouling fence and accumulated on the lower side of the anti-fouling fence, after the water in the flocculation tank reaches the second communicating pipeline and enters the ultrafiltration membrane tank through the second communicating pipeline, water flow in the ultrafiltration membrane tank is in a stable state through the inclined pipe arranged on the lower side in the ultrafiltration membrane tank, when the water overflows the inclined pipe and contacts the ultrafiltration membrane, the ultrafiltration membrane enables smaller flocs to form a cake layer on the surface of the ultrafiltration membrane, and as the flocs have certain activity, the flocs which become the cake layer can still adsorb the flocs in the later stage, so that the ultrafiltration membrane is difficult to be blocked by the flocs, meanwhile, the filter cake particles after cleaning are large and heavy, the sedimentation characteristic is good, the water is convenient to discharge, at the moment, the water suction pump is started to pump, and the water in the ultrafiltration membrane tank is pumped out from the third communicating pipeline, and finally flow to in the clear water pond, when water flows in the third intercommunication pipeline, add a small amount of sterile water from the second sterile water feed inlet, prevent secondary pollution, discharge through the delivery port that the clear water pond right-hand member is fixed with at last, this device makes water through multiple filtration and disinfection, then carries out the depth filtration through the milipore filter for the milipore filter is difficult for blockking up, makes the work efficiency greatly increased of short-flow water purification processing technology.

2. This scheme is through mixing the pond, the lower part in flocculation basin and ultrafiltration membrane pond all becomes "pitch arc" form for mix the pond, impurity in flocculation basin and the ultrafiltration membrane pond, precipitate such as mud can better concentrate in the bottom, and the third blow off pipe, second blow off pipe and the first blow off pipe that are equipped with through the bottom discharge, finally agree through total calandria to discharge, make mix the pond, flocculation basin and ultrafiltration membrane pond are difficult for piling up precipitate such as impurity, mud, and it is convenient to clear up.

3. This scheme is through the valve that all installs on first sterile water inlet pipe, flocculating agent feed inlet, second sterile water feed inlet, first blow off pipe, second blow off pipe and the third blow off pipe for this device water-logging is difficult to be polluted, mixes the difficult automatic outflow of water in pond, flocculation basin and the milipore filter pond simultaneously, is difficult for causing the unnecessary extravagant.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a partial perspective view of the middle helical blade of the present invention;

fig. 3 is a front view of the present invention.

In the figure: 1-a mixing tank; 2-water inlet pipe; 3-a first sterilized water feeding pipe; 4-a valve; 5, a motor; 6-a rotating shaft; 7-helical blades; 8-a flocculant feed port; 9-a filter screen; 10-a first communication duct; 11-a flocculation tank; 12-ultrafiltration membrane tank; 13-antifouling barrier; 14-a second communicating conduit; 15-a second sterilized water feed port; 16-a third communicating conduit; 17-a water pump; 18-ultrafiltration membrane; 19-a chute; 20-a clean water tank; 21-water outlet; 22-a first drain pipe; 23-a second sewage draining pipe; 24-a third blow-off pipe; 25-total calandria.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present invention provides the following technical solutions:

an immersion type ultrafiltration membrane short-flow water treatment device adopting an inclined tube comprises a mixing tank 1, wherein a flocculation tank 11, an ultrafiltration membrane tank 12 and a clean water tank 20 are sequentially arranged on the right side of the mixing tank 1, the mixing tank 1 is communicated with the flocculation tank 11 through a first communicating pipeline 10, a flocculant feed inlet 8 is fixed at the upper end of the first communicating pipeline 10, the lower end of the flocculant feed inlet 8 penetrates through the upper inner wall of the first communicating pipeline 10, the flocculation tank 11 is communicated with the ultrafiltration membrane tank 12 through a second communicating pipeline 14, an ultrafiltration membrane 18 and an inclined tube 19 are sequentially fixed in the ultrafiltration membrane tank 12 from top to bottom, the ultrafiltration membrane tank 12 is communicated with the clean water tank 20 through a third communicating pipeline 16, a water outlet 21 is fixed at the right end of the clean water tank 20, the left end of the water outlet 21 penetrates through the right inner wall of the clean water tank 20, a water suction pump 17 is installed on the third communicating pipeline 16, a water inlet tube 2 is fixed, and the right-hand member of inlet tube 2 runs through the left inner wall of mixing tank 1, and the upper end of inlet tube 2 is fixed with first sterile water inlet pipe 3, and the lower extreme of first sterile water inlet pipe 3 runs through the last inner wall of inlet tube 2, all is equipped with rabbling mechanism in mixing tank 1 and the flocculation basin 11.

In the embodiment of the utility model, the scheme firstly sends the raw water into the mixing tank 1 through the water inlet pipe 2, opens the valve 4 on the first sterilized water inlet pipe 3, adds the sterilized water from the first sterilized water inlet pipe 3, by starting the motors 5 in the two stirring mechanisms, the motors can select different models according to the actual needs, for example, the model is TCHV32-1500-3-10S, the motors are electrically connected with the external power supply, so that the output shaft thereof drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the helical blade 7 to rotate, the helical blade 7 leads the raw water and the sterilized water in the mixing tank 1 to be fully fused together, the water is purified, partial larger impurities in the raw water are firstly filtered and deposited to the lower inner wall of the mixing tank 1 through the filter screen 9 arranged in the mixing tank 1, when the water in the mixing tank 1 reaches the height of the first communicating pipe 10, at the moment, water enters a flocculation tank 11 through a first communication pipeline 10, a flocculating agent is added into the first communication pipeline 10 from a flocculating agent feed inlet 8, then the water is fully stirred through a helical blade 7 in the flocculation tank 11, so that the flocculating agent is fully fused with the water, floating objects in raw water are further blocked and filtered by an anti-fouling barrier 13 through the anti-fouling barrier 13 arranged in the flocculation tank 11 and are accumulated at the lower side of the anti-fouling barrier 13, after the water in the flocculation tank 11 reaches a second communication pipeline 14 and enters an ultrafiltration membrane tank 12 through the second communication pipeline 14, water flow in the ultrafiltration membrane tank 12 is in a stable state through an inclined pipe 19 arranged at the lower side in the ultrafiltration membrane tank 12, when the water overflows the inclined pipe 19 and contacts with an ultrafiltration membrane 18, a small floc forms a cake layer on the surface of the ultrafiltration membrane 18, and the floc has certain activity, so that the floc after the cake layer can still adsorb the later-stage floc, so that the flocs are not easy to block the ultrafiltration membrane 18, and meanwhile, the filter cake after cleaning is large and heavy, has good sedimentation characteristic and is convenient to discharge, at the moment, the water suction pump 17 is started, the water suction pump 17 selects different models according to actual needs, for example, the model is the water pump 40G10-18SZ304, the water suction pump 17 is electrically connected with an external power supply, for a person skilled in the art, the motor 5 and the water suction pump 17 are the prior art, and are not described in much detail, so that the water suction pump 17 pumps, water in the ultrafiltration membrane tank 12 is pumped out from the third communicating pipeline 16 and finally flows into the clean water tank 20, the clean water tank 20 is used for containing clean water, when the water flows in the third communicating pipeline 16, a small amount of sterile water is added from the second sterile water inlet 15 to prevent secondary pollution, and finally the water is discharged through the water outlet 21 fixed at the right end of the clean water tank 20, and the device enables the water to be subjected to multiple, then the water is deeply filtered by the ultrafiltration membrane, so that the ultrafiltration membrane 18 is not easy to block, and the working efficiency of the short-flow water purification treatment process is greatly increased.

Referring to fig. 1 and 2, each group of stirring mechanisms includes motors 5, rotating shafts 6 and helical blades 7, the two motors 5 are respectively fixed at the upper ends of the mixing tank 1 and the flocculation tank 11, the output shafts of the two motors 5 respectively penetrate through the upper inner walls of the mixing tank 1 and the flocculation tank 11 and extend downwards, the two rotating shafts 6 are respectively fixed with the output shafts of the two motors 5, and the two helical blades 7 are respectively fixed on the surfaces of the two rotating shafts 6.

In this embodiment: after motor 5 starts for its output shaft drives pivot 6 and rotates, and pivot 6 drives helical blade 7 and rotates, makes through helical blade 7 that the rivers upwards rotate in mixing tank 1 and the flocculation basin 11, makes mixing tank 1 and 11 interior waters of flocculation basin fully fuse with sterile water and flocculating agent, and the effect is better.

Specifically, referring to fig. 1, a filter screen 9 is fixed between the inner walls of the mixing tank 1, the filter screen 9 is located at the lower side of the rotating shaft 6 in the mixing tank 1, an anti-fouling fence 13 is fixed between the inner walls of the flocculation tank 11, and the anti-fouling fence 13 is located at the lower side of the rotating shaft 6 in the flocculation tank 11.

In this embodiment: this device is through the filter screen 9 and the antifouling fence 13 that are provided with for impurity and the floater of aquatic carry out dual filtration, make water cleaner.

Specifically please refer to fig. 1 and 3, the lower ends of the mixing tank 1, the flocculation tank 11 and the ultrafiltration membrane tank 12 are both arc-shaped, the lower ends of the mixing tank 1, the flocculation tank 11 and the ultrafiltration membrane tank 12 are respectively fixed with a third drain pipe 24, a second drain pipe 23 and a first drain pipe 22, the lower sides of the third drain pipe 24, the second drain pipe 23 and the first drain pipe 22 are provided with a main drain pipe 25, and the main drain pipe 25 is respectively communicated with the third drain pipe 24, the second drain pipe 23 and the first drain pipe 22.

In this embodiment: through mixing pond 1, the lower part of flocculation basin 11 and ultrafiltration membrane pond 12 all becomes "pitch arc" form, make mixing pond 1, the impurity in flocculation basin 11 and the ultrafiltration membrane pond 12, precipitate such as mud can better concentrate in the bottom, and the third blow off pipe 24 that is equipped with through the bottom, second blow off pipe 23 and first blow off pipe 22 discharge, finally agree to the discharge through total calandria 25, make mixing pond 1, flocculation basin 11 and ultrafiltration membrane pond 12 are difficult for piling up impurity, precipitate such as mud, and it is convenient to clear up.

Referring to fig. 3, valves 4 are respectively installed on the first sterilized water feeding pipe 3, the flocculant feeding port 8, the third sewage discharging pipe 24, the second sewage discharging pipe 23 and the first sewage discharging pipe 22.

In this embodiment: this device is through first sterile water inlet pipe 3, flocculating agent feed inlet 8, third blow off pipe 24, the valve 4 that all installs on second blow off pipe 23 and the first blow off pipe 22, make and add sterile water and flocculating agent after, first sterile water inlet pipe 3, flocculating agent feed inlet 8 is convenient for close, make difficult entering pollutant in inlet tube 2 and the first connecting tube 10, mixing tank 1 simultaneously, the difficult automatic outflow of water in flocculation basin 11 and the ultrafiltration membrane pond 12, it is difficult for causing the unnecessary extravagant.

Specifically referring to fig. 1, a second sterilized water inlet 15 is fixed to an upper end of the third communicating pipe 16, a lower end of the second sterilized water inlet 15 penetrates through an upper inner wall of the third communicating pipe 16, and a valve 4 is installed on the second sterilized water inlet 15.

In this embodiment: this device is fixed with second sterile water feed inlet 15 through the upper end of third intercommunication pipeline 16, and the lower extreme of second sterile water feed inlet 15 runs through the last inner wall of third intercommunication pipeline 16, installs the setting of valve 4 on the second sterile water feed inlet 15 for the water after straining is difficult by secondary pollution, is difficult for getting into the pollutant from second sterile water feed inlet 15 simultaneously.

The utility model discloses a theory of operation and use flow: in the scheme, raw water is firstly fed into a mixing tank 1 through a water inlet pipe 2, sterile water is added from a first sterile water feeding pipe 3, a motor 5 in two stirring mechanisms is started, an output shaft of the motor drives a rotating shaft 6 to rotate, the rotating shaft 6 drives a spiral blade 7 to rotate, the spiral blade 7 enables the raw water and the sterile water in the mixing tank 1 to be fully fused together, a water purification effect is achieved, when the water in the mixing tank 1 reaches the height of a first communicating pipeline 10, the water enters a flocculation tank 11 through the first communicating pipeline 10 at the moment, a flocculating agent is added into the first communicating pipeline 10 from a flocculating agent feeding port 8, then the flocculating agent and the water are fully stirred through the spiral blade 7 in the flocculation tank 11, the flocculating agent and the water are fully fused, when the water in the flocculation tank 11 reaches a second communicating pipeline 14 and enters an ultrafiltration membrane tank 12 through the second communicating pipeline 14, the inclined tube 19 arranged at the lower side in the ultrafiltration membrane tank 12 enables water flow in the ultrafiltration membrane tank 12 to be in a stable state, when water flows through the inclined tube 19 and contacts with the ultrafiltration membrane 18, the ultrafiltration membrane 18 enables smaller flocs to form a cake layer on the surface of the ultrafiltration membrane 18, and the flocs after becoming the cake layer can still adsorb flocs in a later period due to certain activity, so that the flocs are not easy to block the ultrafiltration membrane 18, and meanwhile, the cleaned filter cake has large and heavy particles and good sedimentation characteristics and is convenient to discharge, at the moment, the water suction pump 17 is started to pump the water suction pump 17, so that the water in the ultrafiltration membrane tank 12 is pumped out from the third communicating pipeline 16 and finally flows into the clean water tank 20, when the water flows in the third communicating pipeline 16, a small amount of sterile water is added from the second sterile water inlet 15 to prevent secondary pollution, and finally the water is discharged through the water outlet 21 fixed at the right end of the clean water tank 20, this device makes water through multiple filtration and disinfection, then carries out the depth filtration through the milipore filter for the milipore filter is difficult for blockking up, makes the work efficiency greatly increased of short flow water purification treatment process.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides an adopt immersion ultrafiltration membrane short flow water treatment facilities of pipe chute which characterized in that: including mixing tank (1), the right side of mixing tank (1) is equipped with flocculation basin (11), ultrafiltration membrane pond (12) and clean water basin (20) in proper order, through first intercommunication pipeline (10) intercommunication between mixing tank (1) and flocculation basin (11), the upper end of first intercommunication pipeline (10) is fixed with flocculating agent feed inlet (8), the lower extreme of flocculating agent feed inlet (8) runs through the last inner wall of first intercommunication pipeline (10), communicate through second intercommunication pipeline (14) between flocculation basin (11) and ultrafiltration membrane pond (12), top-down is fixed with milipore filter (18) and pipe chute (19) in proper order in ultrafiltration membrane pond (12), communicate through third intercommunication pipeline (16) between ultrafiltration membrane pond (12) and clean water basin (20), the right-hand member in clean water basin (20) is fixed with delivery port (21), and the right inner wall in clean water basin (20) is run through to the left end of delivery port (21), install suction pump (17) on third intercommunication pipeline (16), the left end of mixing pond (1) is fixed with inlet tube (2), and the right-hand member of inlet tube (2) runs through the left inner wall of mixing pond (1), the upper end of inlet tube (2) is fixed with first sterile water inlet pipe (3), the lower extreme of first sterile water inlet pipe (3) runs through the last inner wall of inlet tube (2), all be equipped with rabbling mechanism in mixing pond (1) and flocculation basin (11).

2. The submerged ultrafiltration membrane short-process water treatment device adopting the inclined tube according to claim 1, characterized in that: every group rabbling mechanism includes motor (5), pivot (6) and helical blade (7), two motor (5) are fixed in the upper end of mixing pond (1) and flocculation basin (11) respectively, and the output shaft of two motor (5) run through the last inner wall and the downwardly extending of mixing pond (1) and flocculation basin (11) respectively, two pivot (6) are fixed between the output shaft of two motor (5) respectively, two helical blade (7) are fixed in the surface of two pivot (6) respectively.

3. The submerged ultrafiltration membrane short-flow water treatment device adopting the inclined tube as claimed in claim 2, wherein: be fixed with filter screen (9) between the inner wall of mixing pond (1), filter screen (9) are located the downside of mixing pond (1) internal rotation axle (6), be fixed with antifouling fence (13) between the inner wall of flocculation basin (11), antifouling fence (13) are located the downside of flocculation basin (11) internal rotation axle (6).

4. The submerged ultrafiltration membrane short-flow water treatment device adopting the inclined tube as claimed in claim 3, wherein: the lower extreme of mixing pond (1), flocculation basin (11) and ultrafiltration membrane pond (12) is "arc" form, the lower extreme of mixing pond (1), flocculation basin (11) and ultrafiltration membrane pond (12) is fixed with third blow off pipe (24), second blow off pipe (23) and first blow off pipe (22) respectively, the downside of third blow off pipe (24), second blow off pipe (23) and first blow off pipe (22) is equipped with total calandria (25), communicate respectively between total calandria (25) and third blow off pipe (24), second blow off pipe (23) and first blow off pipe (22).

5. The submerged ultrafiltration membrane short-flow water treatment device adopting the inclined tube as claimed in claim 4, wherein: all install valve (4) on first sterile water inlet pipe (3), flocculating agent feed inlet (8), third blow off pipe (24), second blow off pipe (23) and first blow off pipe (22).

6. The submerged ultrafiltration membrane short-flow water treatment device adopting the inclined tube as claimed in claim 5, wherein: a second sterilized water feeding hole (15) is fixed at the upper end of the third communicating pipeline (16), the lower end of the second sterilized water feeding hole (15) penetrates through the upper inner wall of the third communicating pipeline (16), and a valve (4) is installed on the second sterilized water feeding hole (15).

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