CN210885706U - Domestic sewage treatment system for wharf engineering - Google Patents

Abstract

The utility model relates to a domestic sewage treatment system of pier engineering relates to sewage treatment technical field, include: the equalizing basin, the elevator pump, the blow off pipe, the reaction tank, the sedimentation tank, the fan room, the blow-down tank, the circulation subassembly, air-blower and breather pipe, the inside of equalizing basin is provided with elevator pump and blow off pipe, and the one end and the elevator pump of blow off pipe are connected, the equalizing basin is stretched out to the other end of blow off pipe, the reaction tank is used for carrying out oxidation treatment to sewage, blow off pipe exhaust sewage passes through the water inlet and gets into in the reaction tank, the opposite side of reaction tank is provided with the sedimentation tank, one side that the reaction tank is kept away from to the sedimentation tank is provided with the blow-down tank, the circulation subassembly sets up in the reaction tank, the circulation subassembly can be with the sewage circulation processing in the reaction tank, the air-blower is located in the fan room, the one end of breather pipe communicates in. The utility model discloses has the better effect of sewage treatment effect.

Description

Domestic sewage treatment system for wharf engineering

Technical Field

The utility model belongs to the technical field of sewage treatment technique and specifically relates to a domestic sewage treatment system of pier engineering is related to.

Background

At present, sewage treatment is a process for purifying sewage to meet the water quality requirement of draining a certain water body or reusing the sewage, and is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, dust landscape, medical treatment, catering and the like, wherein the domestic sewage treatment of wharf engineering is one of the fields, and a scientific sewage treatment system can recycle water resources to the maximum extent.

Retrieving a Chinese utility model patent with publication number CN207943960U, discloses a sewage treatment system in hydraulic engineering, comprising a sewage collection tank and a sewage treatment tank, wherein the sewage treatment tank is arranged inside the sewage collection tank, the outer surface of the sewage collection tank is provided with a sewage concentration port, a sludge delivery pipe and a reclaimed water delivery pipe, the sewage concentration port is fixed in the middle section of the upper end of the sewage collection tank in a funnel shape, the sludge delivery pipes are symmetrically fixed at the left and right ends of the sewage collection tank, the reclaimed water delivery pipe penetrates through the lower end side wall of the sewage collection tank and is communicated with the sewage treatment tank, the inside of the sewage collection tank is also provided with a filter plate, a movable plate and a spring rotating rod, the movable plate is symmetrically arranged at the left and right ends of the filter plate, and the filter plate and the spring rotating rod are both fixed on the inner wall of the sewage collection tank, the movable plate is movably connected with the spring rotating rod, the sewage treatment pond sets up in the lower extreme of filter, and it is including gravel handling layer, connection frame, active carbon adsorption layer, cation adsorbed layer and sterilization treatment layer, and layer, active carbon adsorption layer, cation adsorbed layer and sterilization treatment layer are handled to this gravel, and four vertically arrange in proper order along the sewage holding vessel, and all set up through connection frame is fixed between every adjacent two in four.

The above prior art solutions have the following drawbacks: the sewage is directly from the sewage concentrate mouthful get into in the sewage collection tank, and does not have the preliminary stage preliminary treatment, and is relatively poor to the treatment effect of sewage, and sewage when in the sewage treatment pond, does not carry out oxidation treatment, makes the organic matter in the sewage be difficult to biodegradable, and is thorough inadequately to the processing of sewage, so remain to improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wharf engineering's domestic sewage treatment system has the better advantage of sewage treatment effect.

The above object of the present invention can be achieved by the following technical solutions: a sanitary sewage treatment system for wharf engineering, comprising: a regulating tank, a lift pump, a blow-off pipe, a reaction tank, a sedimentation tank, a fan room, a discharge tank, a circulating component, a blower and a vent pipe,

a sewage inlet is arranged on one side of the adjusting tank, the lift pump and the sewage discharge pipe are arranged in the adjusting tank, one end of the sewage discharge pipe is connected with the lift pump, the other end of the sewage discharge pipe extends out of the adjusting tank, the sewage in the adjusting tank is discharged through the sewage discharge pipe,

the reaction tank is used for carrying out oxidation treatment on sewage, one side of the reaction tank is provided with a water inlet, the sewage discharged by the sewage discharge pipe enters the reaction tank through the water inlet, the other side of the reaction tank is provided with the sedimentation tank, one side of the sedimentation tank, which is far away from the reaction tank, is provided with the discharge tank, the outer side of the discharge tank is provided with a sewage outlet, the circulating component is arranged in the reaction tank and can carry out circulating treatment on the sewage in the reaction tank,

the air blower is arranged in the fan room, one end of the vent pipe is communicated with the air blower, the other end of the vent pipe is communicated with the inside of the reaction tank, and the air blower conveys oxygen into the reaction tank through the vent pipe.

By adopting the technical scheme, after the sewage enters the regulating tank through the sewage inlet, as a plurality of suspended solids in the sewage have higher density than water, solid impurities can naturally sink after the sewage enters the regulating tank, so that the sewage is subjected to solid-liquid separation firstly, and then a later treatment process is carried out, thereby improving the treatment effect of the sewage; after the sewage in the regulating reservoir is pretreated, the sewage is discharged into the reaction reservoir through the lifting pump and the drain pipe, after the sewage is subjected to oxidation treatment by the reaction reservoir, organic matters in the sewage can be gradually degraded into simple inorganic matters, and pollutants dissolved in the sewage can be decomposed out, so that the effect of purifying the sewage is achieved, an air blower in the fan room can convey oxygen into the reaction reservoir through a vent pipe, so that the sewage in the reaction reservoir is subjected to relatively thorough oxidation treatment, and meanwhile, when the sewage in the reaction reservoir is not subjected to thorough oxidation decomposition, the sewage can be repeatedly subjected to oxidation treatment through the circulating assembly, so that the treatment effect of the sewage is further enhanced; after the sewage is subjected to oxidation reaction in the reaction tank, pollutants dissolved in the sewage are oxidized into substances insoluble in the sewage, the substances decomposed can be precipitated by the sewage introduced into the sedimentation tank, the sewage is subjected to disinfection treatment through the discharge tank after passing through the sedimentation tank, and finally the qualified clean water is discharged to a specified position.

The utility model discloses further set up as, the reaction tank includes: an oxygen-poor tank, a first contact oxidation tank, a second contact oxidation tank, a first valve and a second valve,

a water inlet is arranged on one side of the anoxic tank, a first water pipe is communicated between the anoxic tank and the first contact oxidation tank, the first valve is arranged on the first water pipe, the first water pipe discharges sewage in the anoxic tank into the first contact oxidation tank,

and a second water pipe is communicated between the first contact oxidation pond and the second contact oxidation pond, the second valve is arranged on the second water pipe, and the second water pipe discharges the sewage in the first contact oxidation pond into the second contact oxidation pond.

Through adopting above-mentioned technical scheme, sewage in the equalizing basin passes through the blow off pipe discharge back, in rethread water inlet gets into the oxygen deficiency pond, after sewage reacted in the oxygen deficiency pond, open first valve, sewage gets into first contact oxidation pond through first water pipe, after sewage reacted in first contact oxidation pond, open the second valve, sewage got into second contact oxidation pond through the second water pipe in, make sewage can carry out oxidation reaction step by step, the structure is fairly simple, the treatment effect of sewage is better.

The utility model discloses further set up as, the circulation subassembly includes: a circulating pipe, a reflux pump and a third valve,

one end of the circulating pipe is arranged in the second contact oxidation pond, the other end of the circulating pipe is arranged in the anoxic pond, the reflux pump is arranged at the bottom end of the second contact oxidation pond, the third valve is arranged on the circulating pipe, and when sewage in the second contact oxidation pond is still not oxidized completely, the reflux pump can transport the sewage again to the circular oxidation treatment is carried out in the anoxic pond.

Through adopting above-mentioned technical scheme, when sewage still does not have the oxidation thoroughly in the second contact oxidation pond, start the backwash pump, open the third valve, sewage is carried to the oxygen deficiency pond again through the circulating pipe in, carries out the oxidation reaction of circulating, and after thorough until sewage oxidation reaction, carries out subsequent processing to sewage again, above-mentioned project organization is fairly simple, and the operation is more convenient, and the reaction effect of sewage is better.

The utility model discloses further set up to, still include: the sludge discharge pump is arranged in the center of the interior of the sedimentation tank, the sludge discharge pump passes through the sludge discharge pipe to discharge the sludge water in the sedimentation tank, and the fourth valve is arranged on the sludge discharge pipe and located outside the sedimentation tank.

Through adopting above-mentioned technical scheme, sewage carries out oxidation reaction in the sedimentation tank of discharging back, and the precipitate in the sewage can subside in the sedimentation tank, when the precipitate in the sedimentation tank is discharged to needs, opens the fourth valve, starts the sludge pump, outside the precipitate was discharged the sedimentation tank through the mud pipe, the structure is fairly simple, the operation is more convenient, and the treatment effect of sewage is better.

The utility model discloses further set up to, still include: the top of one side of equalizing basin is provided with the grid well, sewage import is located one side of grid well, the vertical recess that is provided with in outside of grid well, sewage import with the recess is linked together, removable grafting has the grid net in the recess.

Through adopting above-mentioned technical scheme, the grid well provides the mounted position of preferred for the grid net, when sewage from sewage import entering equalizing basin in, the grid net can separate the fender to the partial solid in the sewage, carried out first step filtration before getting into the equalizing basin to sewage, the structure is fairly simple, and is convenient, and grid net and grid well make removable grafting, when the net adsorption of grid has more impurity, can directly take out the grid net in the grid well with the clearance grid net, it is fairly simple to dismantle and the mounting means, make things convenient for the maintenance and the change of later stage grid net.

The utility model discloses further set up to, still include: the automatic lifting assembly is vertically arranged in the adjusting tank and controls the lifting of the lifting pump.

Through adopting above-mentioned technical scheme, elevator pump self has certain weight, and the elevator pump setting is in the inside of equalizing basin, when needs are changed or are repaired the elevator pump, needs the staff to get into and carries out the elevator pump in the equalizing basin, wastes time and energy, through set up automatic rising and falling subassembly in the equalizing basin, transports the elevator pump by automatic rising and falling subassembly control, above-mentioned project organization is fairly simple, convenient, has saved manpower and time, has improved sewage treatment efficiency.

The utility model discloses further set up to, automatic lifting unit includes: a lifting motor, a lifting frame, a traction rope and a hook,

the utility model discloses a lifting motor, including lifting frame, haulage rope, equalizing basin, lifting frame wrap up in the elevator pump, the vertical ring that is provided with of upper surface of lifting frame, the one end of couple run through in the ring, the other end of couple with the haulage rope is connected, the entrance slot has been seted up at the top of equalizing basin, the haulage rope run through in the entrance slot extends to outside the equalizing basin, the haulage rope passes through lifting motor receive and releases.

Through adopting above-mentioned technical scheme, when needs lift elevator pump, start the lift motor, when the lift motor was received the haulage rope, the lifting frame received the pulling force of haulage rope and upward movement, when the haulage rope was put to the lift motor, the lifting frame received the gravity of self and downstream, and ring and couple are mutually supported, make the lifting frame be difficult to break away from with the couple, dismantle with mounting means fairly simple, the structure is more firm.

The utility model discloses further set up to, the reaction tank the sedimentation tank with the discharge tank is connected and is a holistic jar, the bottom of jar is provided with a plurality of supporting seats, the bottom of supporting seat is through many planting muscle and ground fixed connection.

Through adopting above-mentioned technical scheme, above-mentioned project organization is simple, stable, firm relatively, is favorable to whole transfer, installs above-mentioned jar (reaction tank, sedimentation tank and discharge basin), and bar planting and supporting seat are favorable to above-mentioned jar to be connected with the ground is stable, and stability is higher.

To sum up, the utility model discloses a beneficial technological effect does:

firstly, the adjusting tank can pretreat the sewage, the sewage treatment effect is good, meanwhile, the sewage is oxidized by the reaction tank, and the oxidizing agent is conveyed into the reaction tank through the vent pipe, so that pollutants in the sewage can be decomposed, and the sewage is treated more thoroughly;

secondly, the grid net in the grid well has the effect of prefiltering to the solid impurity in the sewage, makes sewage treatment effect better when carrying out subsequent processing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

fig. 4 is an enlarged view at C in fig. 1.

Reference numerals: 1. a regulating tank; 11. a sewage inlet; 12. a grid well; 121. a grid net; 13. a groove; 14. an inlet tank; 2. a lift pump; 3. a blow-off pipe; 4. a reaction tank; 41. an anoxic tank; 411. a water inlet; 42. a first contact oxidation pond; 43. a second contact oxidation pond; 44. a first valve; 45. a second valve; 46. a first water pipe; 47. a second water pipe; 5. a sedimentation tank; 6. a fan house; 7. a discharge tank; 71. a sewage outlet; 8. a circulation component; 81. a circulation pipe; 82. a reflux pump; 83. a third valve; 9. a blower; 101. a breather pipe; 102. a sludge discharge pipe; 103. a sludge discharge pump; 104. a fourth valve; 105. an automatic lifting assembly; 1051. a hoisting motor; 1052. a lifting frame; 1053. a hauling rope; 1054. hooking; 1055. a circular ring; 106. a supporting seat; 107. planting bars; 108. and locking the screw.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With reference to fig. 1 and 2, the utility model discloses a domestic sewage treatment system for wharf engineering, which includes: an adjusting tank 1, a lifting pump 2, a blow-off pipe 3, a reaction tank 4, a sedimentation tank 5, a fan room 6, a discharge tank 7, a circulating component 8, an air blower 9 and a vent pipe 101, wherein one side of the adjusting tank 1 is provided with a sewage inlet 11, the adjusting tank 1 is internally provided with the lifting pump 2 and the blow-off pipe 3, one end of the blow-off pipe 3 is connected with the lifting pump 2, the other end of the blow-off pipe 3 extends out of the adjusting tank 1, the sewage in the adjusting tank 1 is discharged through the blow-off pipe 3, the reaction tank 4 is used for carrying out oxidation treatment on the sewage, one side of the reaction tank 4 is provided with a water inlet 411, the sewage discharged from the blow-off pipe 3 enters the reaction tank 4 through the water inlet 411, the other side of the reaction tank 4 is provided with the sedimentation tank 5, one side of the sedimentation tank 5, which is far away from the reaction tank 4, the outer side of the discharge tank 7 is provided with a sewage outlet 71, the air blower 9 is arranged in the air blower room 6, one end of the vent pipe 101 is communicated with the air blower 9, the vent pipe 101 is provided with three air outlets which are respectively communicated with the anoxic tank 41, the first contact oxidation tank 42 and the second contact oxidation tank 43, the other end of the vent pipe 101 is communicated in the reaction tank 4, and the air blower 9 conveys oxygen into the reaction tank 4 through the vent pipe 101.

The reaction tank 4 includes: the device comprises an anoxic pond 41, a first contact oxidation pond 42, a second contact oxidation pond 43, a first valve 44 and a second valve 45, wherein a water inlet 411 is formed in one side of the anoxic pond 41, a first water pipe 46 is communicated between the anoxic pond 41 and the first contact oxidation pond 42, the first valve 44 is arranged on the first water pipe 46, sewage in the anoxic pond 41 is discharged into the first contact oxidation pond 42 through the first water pipe 46, a second water pipe 47 is communicated between the first contact oxidation pond 42 and the second contact oxidation pond 43, the second valve 45 is arranged on the second water pipe 47, and the second water pipe 47 discharges the sewage in the first contact oxidation pond 42 into the second contact oxidation pond 43. The sewage in the equalizing basin 1 passes through the blow off pipe 3 and discharges the back, in rethread water inlet 411 gets into the oxygen deficiency pond 41, after sewage reacted in the oxygen deficiency pond 41, open first valve 44, sewage gets into first contact oxidation pond 42 through first water pipe 46, after sewage reacted in first contact oxidation pond 42, open second valve 45, sewage gets into in second contact oxidation pond 43 through second water pipe 47, make sewage can carry out oxidation reaction step by step, the structure is fairly simple, the treatment effect of sewage is better.

The circulation assembly 8 includes: the circulating pipe 81, the reflux pump 82 and the third valve 83, one end of the circulating pipe 81 is arranged in the second contact oxidation pond 43, the other end of the circulating pipe 81 is arranged in the anoxic pond 41, the reflux pump 82 is arranged at the bottom end of the second contact oxidation pond 43, the third valve 83 is arranged on the circulating pipe 81, and when the sewage in the second contact oxidation pond 43 is still not oxidized completely, the reflux pump 82 can re-convey the sewage to the anoxic pond 41 for circular oxidation treatment. A sample connection 431 has been seted up at the top of second contact oxidation pond 43, the staff can come to sample sewage through the sample connection 431 on the second contact oxidation pond 43, and judge whether thorough oxidation reaction of sewage finishes, when sewage still does not have the oxidation thoroughly in the second contact oxidation pond 43, open third valve 83, start-up backwash pump 82, sewage is carried to the oxygen deficiency pond 41 again through circulating pipe 81, carry out endless oxidation reaction, until sewage oxidation reaction thoroughly back, carry out subsequent processing to sewage again, the above-mentioned design structure is fairly simple, and the operation is more convenient, and the reaction effect of sewage is better.

The system further comprises: the sludge pump 103 is arranged at the center of the interior of the sedimentation tank 5, the sludge pump 103 discharges the sludge in the sedimentation tank 5 through the sludge pipe 102, and the fourth valve 104 is arranged on the sludge pipe 102 and is located outside the sedimentation tank 5. During sewage carries out the oxidation reaction back and discharges into sedimentation tank 5, and the precipitate in the sewage can subside in sedimentation tank 5, when the precipitate in the sedimentation tank 5 of needs discharge, opens fourth valve 104, starts sludge pump 103, outside the precipitate was discharged sedimentation tank 5 through mud pipe 102, the structure is fairly simple, the operation is more convenient, and the treatment effect of sewage is better.

The system further comprises: grid well 12, one side top of equalizing basin 1 is provided with grid well 12, and one side of grid well 12 is located to sewage import 11, and the vertical recess 13 that is provided with in the outside of grid well 12, sewage import 11 are linked together with recess 13, and removable grafting has grid net 121 in the recess 13. Grid well 12 provides the mounted position of preferred for grid net 121, when sewage gets into equalizing basin 1 from sewage import 11 in, grid net 121 can separate the fender to the partial solid in the sewage, the first step of filtration has been carried out before getting into equalizing basin 1 to sewage, the structure is fairly simple, and grid net 121 and grid well 12 make removable grafting, grid net 121's top is provided with a pull ring, make things convenient for the staff to take out grid net 121, when adsorbing on grid net 121 and having more impurity, can directly take out grid net 121 in grid well 12 with clearance grid net 121 with grid net 121, the screw hole has been seted up to sewage import 11's lower extreme, it has locking screw 108 to run through in the screw hole, grid net 121 passes through locking screw 108 to be fixed in recess 13, it is fairly simple to dismantle and the mounting means, make things convenient for later stage 121 to maintain and change.

The system further comprises: and the automatic lifting assembly 105, the automatic lifting assembly 105 is vertically arranged in the regulating tank 1, and the automatic lifting assembly 105 controls the lifting of the lifting pump 2. Lift pump 2 self has certain weight, and lift pump 2 sets up the inside at equalizing basin 1, when needing to be changed or repair lift pump 2, need the staff to get into and carry out lift pump 2 in equalizing basin 1, waste time and energy, through setting up automatic rising and falling subassembly 105 in equalizing basin 1, by automatic rising and falling subassembly 105 control transportation lift pump 2, above-mentioned project organization is fairly simple, convenient, has saved manpower and time, has improved sewage treatment efficiency.

As shown in fig. 1 and 3, the automatic lifting assembly 105 includes: lifting motor 1051, lifting frame 1052, haulage rope 1053 and couple 1054, lifting frame 1052 wraps up in elevator pump 2, the vertical ring 1055 that is provided with of upper surface of lifting frame 1052, the one end of couple 1054 runs through in ring 1055, the other end and the haulage rope 1053 of couple 1054 are connected, inlet slot 14 has been seted up at the top of equalizing basin 1, haulage rope 1053 runs through in inlet slot 14 and extends to outside equalizing basin 1, haulage rope 1053 receive and releases through lifting motor 1051. When lift pump 2 is gone up and down to needs, start lifting motor 1051, when lifting motor 1051 received haulage rope 1053, lifting frame 1052 received haulage rope 1053's pulling force and upward movement, when lifting motor 1051 put haulage rope 1053, lifting frame 1052 received the gravity of self and the downstream, ring 1055 and couple 1054 mutually support, make lifting frame 1052 be difficult to break away from with couple 1054, it is fairly simple to dismantle and the mounting means, the structure is more firm.

Referring to fig. 1 and 4, the reaction tank 4, the sedimentation tank 5 and the discharge tank 7 are connected into an integral tank, a plurality of support bases 106 are arranged at the bottom of the tank, and the bottom of each support base 106 is fixedly connected with the ground through two planting bars 107. Above-mentioned project organization is simpler, stable, firm, is favorable to whole to shift, installs above-mentioned jar (reaction tank 4, sedimentation tank 5 and discharge tank 7), and bar planting 107 and supporting seat 106 are favorable to above-mentioned jar to be connected with the ground is stable, and stability is higher.

The implementation principle of the embodiment is as follows: after the sewage enters the regulating tank 1 through the sewage inlet 11, as a plurality of suspended solids in the sewage have higher density than water, solid impurities can naturally sink after the sewage enters the regulating tank 1, so that the sewage is subjected to solid-liquid separation firstly and then is subjected to a later treatment process, and the treatment effect of the sewage is improved; after the sewage in the adjusting tank 1 is pretreated, the sewage is discharged into the reaction tank 4 through the lifting pump 2 and the drain pipe 3, after the sewage is oxidized by the reaction tank 4, organic matters in the sewage can be gradually degraded into simple inorganic matters, and pollutants dissolved in the sewage can be decomposed, so that the effect of purifying the sewage is achieved, the air blower 9 in the air blower room 6 can convey oxygen into the reaction tank 4 through the vent pipe 101, so that the sewage in the reaction tank 4 can be oxidized more thoroughly, meanwhile, when the sewage in the reaction tank 4 is not oxidized thoroughly, the sewage can be oxidized repeatedly for many times through the circulating assembly 8, and the sewage treatment effect is further enhanced; after the sewage is subjected to oxidation reaction in the reaction tank 4, pollutants dissolved in the sewage are oxidized into substances insoluble in the sewage, the decomposed substances can be precipitated by the sewage introduced into the sedimentation tank 5, the sewage is subjected to disinfection treatment in the discharge tank 7 after passing through the sedimentation tank 5, and finally the qualified clean water is discharged to a specified position.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. A domestic sewage treatment system of wharf engineering, comprising: a regulating tank (1), a lift pump (2), a blow-off pipe (3), a reaction tank (4), a sedimentation tank (5), a fan room (6), a discharge tank (7), a circulating component (8), a blower (9) and a vent pipe (101),

a sewage inlet (11) is arranged on one side of the adjusting tank (1), the lifting pump (2) and the sewage discharge pipe (3) are arranged in the adjusting tank (1), one end of the sewage discharge pipe (3) is connected with the lifting pump (2), the other end of the sewage discharge pipe (3) extends out of the adjusting tank (1), the sewage in the adjusting tank (1) is discharged through the sewage discharge pipe (3),

the reaction tank (4) is used for carrying out oxidation treatment on sewage, a water inlet (411) is formed in one side of the reaction tank (4), the sewage discharged by the sewage discharge pipe (3) enters the reaction tank (4) through the water inlet (411), the sedimentation tank (5) is arranged on the other side of the reaction tank (4), the discharge tank (7) is arranged on one side of the sedimentation tank (5) far away from the reaction tank (4), a sewage outlet (71) is formed in the outer side of the discharge tank (7), the circulating component (8) is arranged in the reaction tank (4), and the circulating component (8) can circularly treat the sewage in the reaction tank (4),

the air blower (9) is arranged in the fan room (6), one end of the vent pipe (101) is communicated with the air blower (9), the other end of the vent pipe (101) is communicated with the inside of the reaction tank (4), and the air blower (9) conveys oxygen into the reaction tank (4) through the vent pipe (101).

2. The sanitary sewage treatment system of wharf engineering according to claim 1, characterized in that said reaction tank (4) comprises: an oxygen-poor pool (41), a first contact oxidation pool (42), a second contact oxidation pool (43), a first valve (44) and a second valve (45),

a water inlet (411) is arranged on one side of the anoxic tank (41), a first water pipe (46) is communicated between the anoxic tank (41) and the first contact oxidation tank (42), the first valve (44) is arranged on the first water pipe (46), the first water pipe (46) discharges sewage in the anoxic tank (41) into the first contact oxidation tank (42),

a second water pipe (47) is communicated between the first contact oxidation pond (42) and the second contact oxidation pond (43), the second valve (45) is arranged on the second water pipe (47), and the second water pipe (47) discharges the sewage in the first contact oxidation pond (42) into the second contact oxidation pond (43).

3. The sanitary sewage treatment system of wharf engineering according to claim 2, characterized in that said circulation assembly (8) comprises: a circulating pipe (81), a reflux pump (82) and a third valve (83),

the one end of circulating pipe (81) set up in second contact oxidation pond (43), the other end of circulating pipe (81) set up in oxygen deficiency pond (41), backwash pump (82) set up in the inside bottom of second contact oxidation pond (43), third valve (83) set up in on circulating pipe (81), when sewage still does not have the oxidation thoroughly in second contact oxidation pond (43), backwash pump (82) can be with sewage retransfer to carry out the circulation oxidation treatment in oxygen deficiency pond (41).

4. The dock-engineering sanitary sewage treatment system of claim 1, further comprising: mud pump (103), mud pipe (102) and fourth valve (104), mud pump (103) set up in the inside central point of sedimentation tank (5) puts, mud pump (103) pass through mud pipe (102) will mud water in sedimentation tank (5) is discharged, fourth valve (104) are located on mud pipe (102) and be located the outside of sedimentation tank (5).

5. The dock-engineering sanitary sewage treatment system of claim 1, further comprising: grid well (12), one side top of equalizing basin (1) is provided with grid well (12), sewage import (11) are located one side of grid well (12), the vertical recess (13) that is provided with in outside of grid well (12), sewage import (11) with recess (13) are linked together, removable grafting has grid net (121) in recess (13).

6. The dock-engineering sanitary sewage treatment system of claim 1, further comprising: the automatic lifting assembly (105), the automatic lifting assembly (105) vertically set up in equalizing basin (1), just automatic lifting assembly (105) control the lift of elevator pump (2).

7. The sanitary sewage treatment system of wharf engineering according to claim 6, characterized in that said automatic lifting assembly (105) comprises: a lifting motor (1051), a lifting frame (1052), a traction rope (1053) and a hook (1054),

the utility model discloses a conditioning tank, including the domestic sewage treatment device, promote frame (1052), promote the frame (1052) wrap up in lift pump (2), the vertical ring (1055) that is provided with of upper surface of promotion frame (1052), the one end of couple (1054) is run through in ring (1055), the other end of couple (1054) with haulage rope (1053) are connected, entrance groove (14) have been seted up at the top of equalizing basin (1), haulage rope (1053) run through in entrance groove (14) and extend to outside the equalizing basin (1), haulage rope (1053) are through promote motor (1051) receive and release.

8. The sanitary sewage treatment system for wharf engineering according to claim 1, wherein the reaction tank (4), the sedimentation tank (5) and the discharge tank (7) are connected into an integral tank, a plurality of support bases (106) are arranged at the bottom of the tank, and the bottom of the support bases (106) is fixedly connected with the ground through a plurality of planting bars (107).

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