CN208378615U - It is a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber - Google Patents

Abstract

The utility model discloses a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, including promotion pond, homogeneous pond, sedimentation basin, accident pool and discharge bay；Sedimentation basin overflow weir is arranged in the sedimentation basin, sedimentation basin elevator pump is arranged in the sedimentation basin overflow weir, the input terminal of the sedimentation basin elevator pump connects the sedimentation basin by sedimentation basin efferent duct, the output end of the sedimentation basin elevator pump is divided into two-way, the accident pool is wherein connected by accident pool input pipe all the way, another way connects the sedimentation basin overflow weir by sedimentation basin overflow weir input pipe；The first valve is arranged in the accident pool input pipe, and the second valve is arranged in the sedimentation basin overflow weir input pipe.The utility model can be in the case where not influencing front and back process blowdown, the unqualified sewage generated in nitrile rubber production process is handled, sewage can continuous effluent, guarantee that sedimentation basin has compared with low liquid level after rolling, there are enough room and time processing abnormal conditions, guarantees production stabilization and company's benefit.

Description

It is a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber

Technical field

The utility model relates to Petro-chemical field more particularly to a kind of sewage water discharge pond rows for producing nitrile rubber Dirty device.

Background technique

Sewage water discharge pond for producing nitrile rubber, which generally comprises, promotes pond, homogeneous pond, sedimentation basin, accident pool and water outlet Pond.Sewage, which enters, promotes pond, is turned after sewage adjusts pH value to homogeneous pond by elevator pump and flows into sedimentation basin, passes through overflow weir benefit Discharge bay is flowed into potential difference.But in practical operation, if sewage underproof situation occurs in sedimentation basin, need in sedimentation basin Immersible pump is connect, underproof sewage is beaten to accident pool by immersible pump and can be discharged after processing is qualified, and connects pump every time Require that quick-fried, electrical wiring is surveyed in analysis, operator takes a series of processes such as pump, it is cumbersome and time-consuming.It cannot be discharged in time, Preceding process, rear process, which are possible to be suppressed, stops, and seriously affects production, damages company's interest.Therefore, it is necessary to production butyronitrile The sewage water discharge pond blowdown apparatus of rubber is transformed.

Utility model content

Technical problem to be solved in the utility model is to overcome the defect of background technique, is provided a kind of for producing butyronitrile The sewage water discharge pond blowdown apparatus of rubber.The utility model may be implemented in the case where not influencing front and back process blowdown, to fourth The unqualified sewage generated in nitrile rubber production process is handled, sewage can continuous effluent, and guarantee that sedimentation basin has after rolling Compared with low liquid level, there are enough room and time processing abnormal conditions, can directly turn water to accident pool, save human and material resources, protect Card production stabilization and company's benefit；The utility model structure is simple, is skillfully constructed, practical.

It is as follows that the utility model solves technical solution used by above-mentioned technical problem:

It is a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, including promote pond, homogeneous pond, sedimentation basin, thing Gu Chi and discharge bay；Setting promotes pond elevator pump between the promotion pond and the homogeneous pond, described to promote the defeated of pond elevator pump Enter end and connect the promotion pond by promoting pond efferent duct, the output end for promoting pond elevator pump is connected by homogeneous pond input pipe Connect the homogeneous pond；Homogeneous pond overflow weir is arranged in the homogeneous pond, and homogeneous pond overflow port is arranged in the homogeneous pond overflow weir；It is described Sedimentation basin overflow weir is arranged in sedimentation basin, and sedimentation basin overflow port, the sedimentation basin overflow open height is arranged in the sedimentation basin overflow weir Lower than the homogeneous pond overflow port；Sedimentation basin elevator pump, the input of the sedimentation basin elevator pump is arranged in the sedimentation basin overflow weir End connects the sedimentation basin by sedimentation basin efferent duct, and the output end of the sedimentation basin elevator pump is divided into two-way, wherein a-road-through It crosses accident pool input pipe and connects the accident pool, another way connects the sedimentation basin overflow by sedimentation basin overflow weir input pipe Weir；The first valve is arranged in the accident pool input pipe, and the second valve is arranged in the sedimentation basin overflow weir input pipe；The accident pool Immersible pump is set, and the immersible pump connects the promotion pond by accident pool efferent duct；The sedimentation basin height of weir plate is higher than The discharge bay, the sedimentation basin overflow weir connect the discharge bay by the sedimentation basin overflow weir efferent duct of bottom.

Further, the first sewage pipe, the second sewage pipe, third sewage pipe, the 4th sewage pipe is arranged in the promotion pond；? Grid is arranged in the inlet for promoting pond；The accident pool efferent duct, first sewage pipe, second sewage pipe, institute The sewage for stating third sewage pipe and the 4th sewage pipe is filtered by the grid into the promotion pond；First blowdown Third valve, the 4th valve, is respectively set in pipe, second sewage pipe, the third sewage pipe and the 4th sewage pipe Five valves and the 6th valve.

Further, the promotion pond elevator pump includes promoting the first elevator pump of pond and promotion the second elevator pump of pond；It is described The setting of the first elevator pump of pond is promoted to promote pond the first elevator pump input port and promote the first elevator pump of pond delivery outlet, the promotion pond First elevator pump input port connects the promotion pond, the promotion pond the first elevator pump delivery outlet by promoting the first efferent duct of pond General pipeline is inputted by homogeneous the first input pipe of pond and homogeneous pond and connect the homogeneous pond, and homogeneous first input pipe of pond is arranged the Seven valves；The setting of the second elevator pump of the promotion pond promotes pond the second elevator pump input port and promotes the output of the second elevator pump of pond Mouthful, the promotions pond the second elevator pump input port is by promoting the second efferent duct of pond connection promotion pond, the promotion pond the Two elevator pump delivery outlets input general pipeline with the homogeneous pond by homogeneous the second input pipe of pond and connect the homogeneous pond, described homogeneous The 8th valve is arranged in the second input pipe of pond.

Further, homogeneous pond setting first input pipe of pH adjusting agent and the second input pipe of pH adjusting agent, the pH The 9th valve is arranged in the first input pipe of regulator, and the tenth valve is arranged in second input pipe of pH adjusting agent.

Further, erecting bed is arranged in the sedimentation basin overflow weir, and the sedimentation basin elevator pump is set to the erecting bed On.

Further, the sedimentation basin elevator pump setting sedimentation basin elevator pump input port and sedimentation basin elevator pump delivery outlet； Sedimentation basin elevator pump input port connects the sedimentation basin by the sedimentation basin efferent duct；The sedimentation basin elevator pump output Mouth is divided into two-way, wherein connecting the accident pool by the accident pool input pipe all the way, another way is overflow by the sedimentation basin It flows weir input pipe and connects the sedimentation basin overflow weir.

Further, discharge bay setting first elevator pump of discharge bay and the second elevator pump of discharge bay；The discharge bay First elevator pump setting discharge bay the first elevator pump input port and discharge bay the first elevator pump delivery outlet, the discharge bay first mention It rises pump input port and the discharge bay is connected by the first efferent duct of discharge bay, the first elevator pump of discharge bay delivery outlet passes through dirt The first input pipe of water factory connects sewage plant and inputs general pipeline, and the 11st valve is arranged in first efferent duct of discharge bay；The water outlet Discharge bay the second elevator pump input port and discharge bay the second elevator pump delivery outlet, the discharge bay second is arranged in the second elevator pump of pond Elevator pump input port connects the discharge bay by the second efferent duct of discharge bay, and the second elevator pump of discharge bay delivery outlet passes through The second input pipe of sewage plant connects the sewage plant and inputs general pipeline, and the 12nd valve is arranged in second efferent duct of discharge bay.

Compared with prior art, the utility model has the beneficial effects that

(1) in the case that the utility model may be implemented in and not influence front and back process blowdown, in nitrile rubber production process The unqualified sewage generated is handled, sewage can continuous effluent, and guarantee that sedimentation basin has compared with low liquid level after rolling, have enough Room and time handles abnormal conditions, can directly turn water to accident pool, save human and material resources, guarantee production stabilization and company Benefit；

(2) the utility model structure is simple, is skillfully constructed, practical.

Detailed description of the invention

Fig. 1 is that a kind of sewage water discharge pond blowdown apparatus structure for producing nitrile rubber of the utility model embodiment 1 is shown It is intended to；

The corresponding component names of each appended drawing reference are in figure: 1- promotes pond；The homogeneous pond 2-；3- sedimentation basin；4- accident Pond；5- discharge bay；6- promotes pond elevator pump；7- promotes pond efferent duct；The homogeneous pond input pipe of 8-；The homogeneous pond overflow weir of 9-；10- is even Matter pond overflow port；11- sedimentation basin overflow weir；12- sedimentation basin overflow port；13- sedimentation basin elevator pump；14- sedimentation basin efferent duct； 15- accident pool input pipe；16- sedimentation basin overflow weir input pipe；The first valve of 17-；The second valve of 18-；19- immersible pump；20- thing Therefore pond efferent duct；21- sedimentation basin overflow weir efferent duct；The first sewage pipe of 22-；The second sewage pipe of 23-；24- third sewage pipe； The 4th sewage pipe of 25-；26- grid；27- third valve；The 4th valve of 28-；The 5th valve of 29-；The 6th valve of 30-；31- is promoted The first elevator pump of pond；32- promotes the second elevator pump of pond；33- promotes the first elevator pump of pond input port；34- promotes pond first and is promoted Pump delivery outlet；35- promotes the first efferent duct of pond；Homogeneous the first input pipe of pond of 36-；The homogeneous pond 37- inputs general pipeline；The 7th valve of 38- Door；39- promotes the second elevator pump of pond input port；40- promotes the second elevator pump of pond delivery outlet；41- promotes the second efferent duct of pond； Homogeneous the second input pipe of pond of 42-；The 8th valve of 43-；The first input pipe of 44-pH regulator；The second input pipe of 45-pH regulator； The 9th valve of 46-；The tenth valve of 47-；48- erecting bed；49- sedimentation basin elevator pump input port；The output of 50- sedimentation basin elevator pump Mouthful；The first elevator pump of 51- discharge bay；The second elevator pump of 52- discharge bay；The first elevator pump of 53- discharge bay input port；54- water outlet Pond the first elevator pump delivery outlet；The first efferent duct of 55- discharge bay；The first input pipe of 56- sewage plant；57- sewage plant inputs general pipeline； The 11st valve of 58-；The second elevator pump of 59- discharge bay input port；60- discharge bay the second elevator pump delivery outlet；61- discharge bay Two efferent ducts；The second input pipe of 62- sewage plant；The 12nd valve of 63-.

Specific embodiment

The content of the utility model in order to better understand, is described further with attached drawing combined with specific embodiments below. It should be understood that these embodiments are only used for, the present invention will be further described, rather than limitation the scope of the utility model.This Outer to should be understood that after having read content described in the utility model, person skilled in art makes the utility model Nonessential change or adjustment, still fall within the protection scope of the utility model.

Embodiment 1

It is a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, as shown in Figure 1, include promoted pond 1, homogeneous pond 2, sedimentation basin 3, accident pool 4 and discharge bay 5；Setting promotes pond elevator pump 6 between the promotion pond 1 and the homogeneous pond 2, described The input terminal for promoting pond elevator pump 6 connects the promotion pond 1, the output for promoting pond elevator pump 6 by promoting pond efferent duct 7 End connects the homogeneous pond 2 by homogeneous pond input pipe 8；Homogeneous pond overflow weir 9 is arranged in the homogeneous pond 2, and the homogeneous pond is overflow Homogeneous pond overflow port 10 is arranged in stream weir 9；Sedimentation basin overflow weir 11 is arranged in the sedimentation basin 3, and the sedimentation basin overflow weir 11 is arranged Sedimentation basin overflow port 12,12 height of sedimentation basin overflow port are lower than the homogeneous pond overflow port 10；The sedimentation basin overflow weir 11 setting sedimentation basin elevator pumps 13, the input terminal of the sedimentation basin elevator pump 13 connect the precipitating by sedimentation basin efferent duct 14 The output end in pond 3, the sedimentation basin elevator pump 13 is divided into two-way, wherein connecting the accident by accident pool input pipe 15 all the way Pond 4, another way connect the sedimentation basin overflow weir 11 by sedimentation basin overflow weir input pipe 16；The accident pool input pipe 15 is set The first valve 17 is set, the second valve 18 is arranged in the sedimentation basin overflow weir input pipe 16；Immersible pump 19 is arranged in the accident pool 5, The immersible pump 19 connects the promotion pond 1 by accident pool efferent duct 20；11 height of sedimentation basin overflow weir is higher than described Discharge bay 5, the sedimentation basin overflow weir 11 connect the discharge bay 5 by the sedimentation basin overflow weir efferent duct 21 of bottom.

The present embodiment blowdown apparatus operation logic:

The present embodiment installs a sedimentation basin elevator pump 13 additional at sedimentation basin overflow weir 11, as shown in Figure 1, sedimentation basin is promoted The outlet of pump 13 divides two-way, connects the accident pool 4 by accident pool input pipe 15 all the way, and another way passes through sedimentation basin overflow weir Input pipe 16 connects the sedimentation basin overflow weir 11, and the first valve 17 is arranged in the accident pool input pipe 15, and the sedimentation basin overflows It flows weir input pipe 16 and second valve 18 is set.If 3 sewage of sedimentation basin is qualified, the first valve 17 is closed, opens the second valve 18,3 sewage of sedimentation basin turns sewage to sedimentation basin overflow weir 11 by sedimentation basin elevator pump 13, guarantees water outlet final settling tanks every time 3 liquid level is beaten to half or so, abnormal conditions can occurring in this way, i.e. sedimentation basin sewage is unqualified, then can close the second valve Door 18 opens the first valve 17, at this time since the liquid level of sedimentation basin 3 is half or so, has time enough by unqualified sewage Accident pool 4 is got to by sedimentation basin elevator pump 11 to be handled.

The present embodiment has the advantages that

The present embodiment may be implemented in the case where not influencing front and back process blowdown, to what is generated in nitrile rubber production process Unqualified sewage is handled, and guarantees production stabilization and company's benefit.

Embodiment 2

The present embodiment is substantially the same manner as Example 1, and difference is only in that, as shown in Figure 1, the promotions pond 1 is arranged the One sewage pipe 22, the second sewage pipe 23, third sewage pipe 24, the 4th sewage pipe 25；In the inlet for promoting pond 1, lattice are set Grid 26；The accident pool efferent duct 20, first sewage pipe 22, second sewage pipe 23,24 and of third sewage pipe The sewage of 4th sewage pipe 25 enters the promotion pond 1 by the grid 26 filtering；It is first sewage pipe 22, described Second sewage pipe 23, the third sewage pipe 24 and the 4th sewage pipe 25 be respectively set third valve 27, the 4th valve 28, 5th valve 29 and the 6th valve 30.

Further, promotion pond elevator pump 6 includes promoting the first elevator pump of pond 31 and promotion the second elevator pump of pond 32； The setting of the first elevator pump of the promotion pond 31 promotes the first elevator pump of pond input port 33 and promotes the first elevator pump of pond delivery outlet 34, The promotion pond the first elevator pump input port 33 connects the promotion pond 1, the promotion pond by promoting the first efferent duct of pond 35 First elevator pump delivery outlet 34 inputs general pipeline 37 by homogeneous the first input pipe of pond 36 and homogeneous pond and connects the homogeneous pond 2, institute It states homogeneous the first input pipe of pond 36 and the 7th valve 38 is set；The setting of the second elevator pump of the promotion pond 32 promotes the second elevator pump of pond Input port 39 and promotion the second elevator pump of pond delivery outlet 40, the promotion pond the second elevator pump input port 39 is by promoting pond second Efferent duct 41 connects the promotion pond 1, and the promotion pond the second elevator pump delivery outlet 40 passes through homogeneous 42 He of the second input pipe of pond The homogeneous pond input general pipeline 37 connects the homogeneous pond 2, and the 8th valve 43 is arranged in homogeneous second input pipe of pond 42.

Further, the first input pipe of pH adjusting agent 44 and the second input pipe of pH adjusting agent 45, institute is arranged in the homogeneous pond 2 It states the first input pipe of pH adjusting agent 44 and the 9th valve 46 is set, the tenth valve 47 is arranged in second input pipe of pH adjusting agent 45.

Further, erecting bed 48 is arranged in the sedimentation basin overflow weir 11, and the sedimentation basin elevator pump 13 is set to described On erecting bed 48.

Further, sedimentation basin elevator pump input port 49 and the output of sedimentation basin elevator pump is arranged in the sedimentation basin elevator pump 13 Mouth 50；Sedimentation basin elevator pump input port 49 connects the sedimentation basin 3 by the sedimentation basin efferent duct 14；The sedimentation basin Elevator pump delivery outlet 50 is divided into two-way, wherein connecting the accident pool 4 by the accident pool input pipe 15 all the way, another way is logical It crosses the sedimentation basin overflow weir input pipe 16 and connects the sedimentation basin overflow weir 11.

Further, the first elevator pump of discharge bay 51 and the second elevator pump of discharge bay 52 is arranged in the discharge bay 5；It is described go out The first elevator pump of pond 51 is arranged the first elevator pump of discharge bay input port 53 and the first elevator pump of discharge bay delivery outlet 54, it is described go out Pond the first elevator pump input port 53 connects the discharge bay 5 by the first efferent duct of discharge bay 55, and the discharge bay first mentions It rises pump delivery outlet 54 and sewage plant input general pipeline 57, first efferent duct of discharge bay 55 is connected by the first input pipe of sewage plant 56 11st valve 58 is set；The second elevator pump of discharge bay input port 59 and discharge bay the is arranged in second elevator pump of discharge bay 52 Two elevator pump delivery outlets 60, second elevator pump of discharge bay input port 59 by the second efferent duct of discharge bay 61 connect it is described go out Pond 5, the second elevator pump of discharge bay delivery outlet 60 connect the sewage plant input always by the second input pipe of sewage plant 62 The 12nd valve 63 is arranged in pipe 57, second efferent duct of discharge bay 61.

The present embodiment is compared with embodiment 1 and is also had the advantages that

The present embodiment blowdown apparatus can make the sewage continuous effluent generated in nitrile rubber production process, and guarantee after rolling Sedimentation basin has compared with low liquid level, there is enough room and time processing abnormal conditions, can directly turn water to accident pool, save manpower Material resources.

Above description is not limitation of the utility model, and the utility model is also not limited to the example above.This technology neck In the essential scope of the utility model, the variations, modifications, additions or substitutions made also should belong to the those of ordinary skill in domain The protection scope of the utility model.

Claims (7)

1. a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, which is characterized in that including promoting pond (1), homogeneous Pond (2), sedimentation basin (3), accident pool (4) and discharge bay (5)；It is arranged between the promotion pond (1) and the homogeneous pond (2) and is promoted Pond elevator pump (6), the input terminal for promoting pond elevator pump (6) connect the promotion pond (1) by promoting pond efferent duct (7), The output end for promoting pond elevator pump (6) connects the homogeneous pond (2) by homogeneous pond input pipe (8)；The homogeneous pond (2) Homogeneous pond overflow weir (9) is set, and homogeneous pond overflow port (10) is arranged in the homogeneous pond overflow weir (9)；Sedimentation basin (3) setting Sedimentation basin overflow port (12) are arranged in sedimentation basin overflow weir (11), the sedimentation basin overflow weir (11), the sedimentation basin overflow port (12) highly it is lower than the homogeneous pond overflow port (10)；Sedimentation basin elevator pump (13) are arranged in the sedimentation basin overflow weir (11), institute The input terminal for stating sedimentation basin elevator pump (13) connects the sedimentation basin (3) by sedimentation basin efferent duct (14), and the sedimentation basin mentions The output end for rising pump (13) is divided into two-way, wherein connecting the accident pool (4), another way by accident pool input pipe (15) all the way The sedimentation basin overflow weir (11) is connected by sedimentation basin overflow weir input pipe (16)；The accident pool input pipe (15) setting the The second valve (18) are arranged in one valve (17), the sedimentation basin overflow weir input pipe (16)；Immersible pump is arranged in the accident pool (4) (19), the immersible pump (19) connects the promotion pond (1) by accident pool efferent duct (20)；The sedimentation basin overflow weir (11) Height is higher than the discharge bay (5), and the sedimentation basin overflow weir (11) is connected by the sedimentation basin overflow weir efferent duct (21) of bottom Connect the discharge bay (5).

2. as described in claim 1 a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, which is characterized in that institute It states and promotes pond (1) setting the first sewage pipe (22), the second sewage pipe (23), third sewage pipe (24), the 4th sewage pipe (25)；? Grid (26) are arranged in the inlet for promoting pond (1)；The accident pool efferent duct (20), first sewage pipe (22), institute The sewage for stating the second sewage pipe (23), the third sewage pipe (24) and the 4th sewage pipe (25) passes through the grid (26) filtering enters the promotion pond (1)；First sewage pipe (22), second sewage pipe (23), the third blowdown Third valve (27), the 4th valve (28), the 5th valve (29) and the is respectively set in pipe (24) and the 4th sewage pipe (25) Six valves (30).

3. as described in claim 1 a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, which is characterized in that institute Stating and promoting pond elevator pump (6) includes promoting the first elevator pump of pond (31) and promoting the second elevator pump of pond (32)；The promotion pond One elevator pump (31) setting promotes the first elevator pump of pond input port (33) and promotes the first elevator pump of pond delivery outlet (34), described to mention It rises the first elevator pump of pond input port (33) and connects the promotion pond (1), the promotion pond by promoting the first efferent duct of pond (35) First elevator pump delivery outlet (34) is connected described homogeneous by homogeneous the first input pipe of pond (36) and homogeneous pond input general pipeline (37) The 7th valve (38) is arranged in pond (2), homogeneous first input pipe of pond (36)；The second elevator pump of the promotion pond (32) setting mentions It rises the second elevator pump of pond input port (39) and promotes the second elevator pump of pond delivery outlet (40), the input of the second elevator pump of the promotion pond Mouth (39) connects the promotion pond (1), the promotion pond the second elevator pump delivery outlet by promoting the second efferent duct of pond (41) (40) the homogeneous pond (2) is connected by homogeneous the second input pipe of pond (42) and homogeneous pond input general pipeline (37), it is described even The 8th valve (43) is arranged in the second input pipe of matter pond (42).

4. as described in claim 1 a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, which is characterized in that institute State homogeneous pond (2) setting the first input pipe of pH adjusting agent (44) and the second input pipe of pH adjusting agent (45), the pH adjusting agent the The 9th valve (46) is arranged in one input pipe (44), and the tenth valve (47) is arranged in second input pipe of pH adjusting agent (45).

5. as described in claim 1 a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, which is characterized in that institute Sedimentation basin overflow weir (11) setting erecting bed (48) is stated, the sedimentation basin elevator pump (13) is set on the erecting bed (48).

6. as described in claim 1 a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, which is characterized in that institute State sedimentation basin elevator pump (13) setting sedimentation basin elevator pump input port (49) and sedimentation basin elevator pump delivery outlet (50)；The precipitating Pond elevator pump input port (49) connects the sedimentation basin (3) by the sedimentation basin efferent duct (14)；The sedimentation basin elevator pump Delivery outlet (50) is divided into two-way, wherein connecting the accident pool (4) by the accident pool input pipe (15) all the way, another way is logical It crosses the sedimentation basin overflow weir input pipe (16) and connects the sedimentation basin overflow weir (11).

7. as described in claim 1 a kind of for producing the sewage water discharge pond blowdown apparatus of nitrile rubber, which is characterized in that institute State discharge bay (5) setting the first elevator pump of discharge bay (51) and the second elevator pump of discharge bay (52)；The discharge bay first is promoted Pump (51) setting the first elevator pump of discharge bay input port (53) and discharge bay the first elevator pump delivery outlet (54), the discharge bay the One elevator pump input port (53) connects the discharge bay (5) by the first efferent duct of discharge bay (55), and the discharge bay first mentions It rises pump delivery outlet (54) and sewage plant input general pipeline (57) is connected by the first input pipe of sewage plant (56), the discharge bay first is defeated The 11st valve (58) is arranged in outlet pipe (55)；The second elevator pump of discharge bay input port is arranged in second elevator pump of discharge bay (52) (59) and discharge bay the second elevator pump delivery outlet (60), second elevator pump of discharge bay input port (59) pass through discharge bay second Efferent duct (61) connects the discharge bay (5), and the second elevator pump of discharge bay delivery outlet (60) is inputted by sewage plant second It manages (62) and connects sewage plant input general pipeline (57), the 12nd valve (63) is arranged in second efferent duct of discharge bay (61).