CN212451078U - Integrated system for treating overground type domestic sewage - Google Patents
Integrated system for treating overground type domestic sewage Download PDFInfo
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- CN212451078U CN212451078U CN202021039692.8U CN202021039692U CN212451078U CN 212451078 U CN212451078 U CN 212451078U CN 202021039692 U CN202021039692 U CN 202021039692U CN 212451078 U CN212451078 U CN 212451078U
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
An integrated system for treating the overground domestic sewage comprises a pre-denitrification pool, an anaerobic pool, an anoxic pool, an aerobic pool, a sedimentation pool and a dephosphorization pool which are arranged in a device room in a box body and are sequentially communicated; the aerobic tank is located in the middle of the box body, the left side of the aerobic tank is provided with the sedimentation tank and the phosphorus removal tank, the left sides of the sedimentation tank and the phosphorus removal tank are provided with the equipment room, the right side of the aerobic tank is provided with the pre-denitration tank, the anaerobic tank and the anoxic tank, and the anoxic tank is located on the front sides of the pre-denitration tank and the anaerobic tank. The utility model has the advantages that: the device has the advantages of good precipitation and phosphorus removal effects, good aeration efficiency, high air stripping reflux efficiency, simple equipment structure and low cost.
Description
Technical Field
The utility model relates to a sewage treatment field, concretely relates to ground formula domestic sewage treatment uses integrated system.
Background
The existing integrated system for treating the ground-based domestic sewage is often poor in overall treatment effect, complex in equipment structure and too high in cost design.
Disclosure of Invention
The utility model aims at providing an integrated system for treating overground domestic sewage aiming at the defects.
The utility model comprises a pre-denitrification pool, an anaerobic pool, an anoxic pool, an aerobic pool, a sedimentation pool and a dephosphorization pool which are arranged between the devices in the box body and are communicated in sequence; the aerobic tank is positioned in the middle of the box body, the sedimentation tank and the phosphorus removal tank are arranged on the left side of the aerobic tank, the equipment room is arranged on the left sides of the sedimentation tank and the phosphorus removal tank, the pre-denitrification tank, the anaerobic tank and the anoxic tank are arranged on the right side of the aerobic tank, the anoxic tank is positioned on the front sides of the pre-denitrification tank and the anaerobic tank,
the sedimentation tank is arranged on the front side of the phosphorus removal tank, the upper part of the sedimentation tank is provided with a first overflow weir, and the first overflow weir is communicated with an overflow pipe arranged in the phosphorus removal tank; the middle parts of the sedimentation tank and the phosphorus removal tank are respectively provided with a sedimentation tank guide cylinder and a phosphorus removal tank guide cylinder, two sides of the sedimentation tank guide cylinder are fixedly connected with first angle steel plates, and the first angle steel plates are fixed on two side walls of the sedimentation tank through bolt assemblies and supporting steel plates; a second angle steel plate is arranged on one side of the guide cylinder of the dephosphorization pool, the second angle steel plate is fixed on the side wall of the dephosphorization pool through a bolt assembly and a support steel plate, a water inlet pipe of the guide cylinder of the dephosphorization pool is connected with the overflow pipe, and a water inlet pipe of the guide cylinder of the sedimentation pool is communicated with a domestic sewage delivery pipe to be sedimentated and treated, which is arranged on the upper part of the aerobic pool; the lower parts of the sedimentation tank and the phosphorus removal tank gradually contract to form a quadrangular pyramid structure, the bottoms of the sedimentation tank and the phosphorus removal tank are respectively provided with a sedimentation tank sludge discharge pipeline and a phosphorus removal tank sludge discharge pipeline which extend out of the equipment room, and the sedimentation tank sludge discharge pipeline and the phosphorus removal tank sludge discharge pipeline are respectively provided with a stop valve and an electromagnetic valve with adjustable opening degree; a second overflow weir is arranged at the upper part of the phosphorus removal tank, a water outlet is arranged in the second overflow weir, and a phosphorus removal agent feeding pipeline is also arranged in the phosphorus removal tank;
the device also comprises an aeration system, wherein the aeration system comprises a pre-denitrification pool air inlet, an anoxic pool air inlet, an anaerobic pool air inlet and an aerobic pool air inlet which are arranged at the upper part of the equipment room; the air inlet of the pre-denitration pool is connected with the air inlet pipe of the pre-denitration pool, and the air inlet pipe of the pre-denitration pool sequentially passes through the tops of the sedimentation pool, the aerobic pool and the anoxic pool, extends into the upper part of the pre-denitration pool, then extends downwards and is communicated with a first annular pipeline arranged at the bottom of the pre-denitration pool; the anoxic tank air inlet is connected with an anoxic tank air inlet pipe, and the anoxic tank air inlet pipe sequentially penetrates through the upper parts of the sedimentation tank and the aerobic tank, enters the upper part of the anoxic tank, then extends downwards and is communicated with a second annular pipeline arranged at the bottom of the anoxic tank; the anaerobic tank air inlet is connected with an anaerobic tank air inlet pipe, and the anaerobic tank air inlet pipe sequentially penetrates through the upper parts of the sedimentation tank, the aerobic tank and the anoxic tank, enters the upper part of the anaerobic tank, then extends downwards and is communicated with a third annular pipeline arranged at the bottom of the anaerobic tank; the air inlet of the aerobic tank is connected with the air inlet pipe of the aerobic tank, the air inlet pipe of the aerobic tank penetrates through the upper part of the sedimentation tank and enters the upper part of the aerobic tank, then the air inlet pipe of the aerobic tank extends downwards and is communicated with an aeration main pipe arranged at the bottom of the aerobic tank, the aeration main pipe is arranged at the bottom of the aerobic tank in a herringbone structure, and a plurality of groups of aeration discs are uniformly arranged on the aeration main pipe; a plurality of air outlet holes are uniformly formed in the first annular pipeline, the second annular pipeline and the third annular pipeline;
the device also comprises a gas stripping reflux system, wherein the gas stripping reflux system comprises a sedimentation tank reflux air inlet and an aerobic tank reflux air inlet which are arranged at the upper part of the equipment room; the top of the sedimentation tank is provided with a first air-lift groove, the bottom of the first air-lift groove is connected with a first air-lift sludge pipe extending to the bottom of the sedimentation tank, the first air-lift groove is also provided with a first return pipe communicated to the aerobic tank and the pre-denitrification tank, a return air inlet of the sedimentation tank is connected with a return air inlet pipe of the sedimentation tank, and the return air inlet pipe of the sedimentation tank extends into the lower part of the sedimentation tank from the top of the sedimentation tank and is communicated with the lower part of the first air-lift sludge pipe; a second air stripping groove is formed in the top of the aerobic tank, a second air stripping mud pumping pipe extending to the bottom of the aerobic tank is connected to the bottom of the second air stripping groove, a second return pipe communicated to the anoxic tank is arranged on the second air stripping groove, and a stainless steel protective cage is arranged at the bottom end of the second air stripping mud pumping pipe; and the aerobic tank backflow air inlet is connected with the aerobic tank backflow air inlet pipe, and the aerobic tank backflow air inlet pipe penetrates through the top of the sedimentation tank, extends into the upper part of the aerobic tank, extends downwards and is communicated with the lower part of the second air-stripping mud pumping pipe.
The air inlet ends of the pre-denitration pool air inlet, the anoxic pool air inlet, the anaerobic pool air inlet, the aerobic pool air inlet, the sedimentation pool backflow air inlet and the aerobic pool backflow air inlet are connected with a sub-cylinder and a rotary fan which are arranged in the equipment room through pipelines.
The stainless steel protective cage is fixed at the bottom of the aerobic tank through a protective cage bracket.
And water passing holes are formed between the pre-denitrification tank and the anaerobic tank, between the anaerobic tank and the anoxic tank and between the anoxic tank and the aerobic tank.
And the water inlet pipe of the guide cylinder of the dephosphorization pool is connected with the connecting end of the overflow pipe through a stainless steel flange.
The height of the water inlet pipe of the sedimentation tank draft tube is lower than that of the overflow weir.
The height of the second overflow weir is lower than that of the water inlet pipe of the guide shell of the dephosphorization pool.
The utility model has the advantages that: the device has the advantages of good precipitation and phosphorus removal effects, good aeration efficiency, high air stripping reflux efficiency, simple equipment structure and low cost.
Drawings
Fig. 1 is a schematic structural diagram of the aeration system of the utility model.
Fig. 2 is a schematic view of the internal connections of the aeration system.
Fig. 3 is a schematic structural diagram of the air stripping reflux system of the present invention.
FIG. 4 is a schematic internal connection diagram of a stripping reflux system.
FIG. 5 is a schematic structural diagram of a sedimentation tank and a dephosphorization tank.
FIG. 6 is a schematic top view of the interior of the settling tank and the phosphorus removal tank.
FIG. 7 is a schematic diagram of the internal structure of the phosphorus removal tank.
FIG. 8 is a schematic view of the connection of a sludge discharge pipe of the sedimentation tank and a sludge discharge pipe of the phosphorus removal tank.
Detailed Description
As shown in the attached drawing, the utility model comprises a device room 7 arranged inside the box body, and a pre-denitrification tank 1, an anaerobic tank 2, an anoxic tank 3, an aerobic tank 4, a sedimentation tank 5 and a dephosphorization tank 6 which are communicated in sequence; the aerobic tank 4 is positioned in the middle of the box body, the sedimentation tank 5 and the phosphorus removal tank 6 are arranged on the left side of the aerobic tank 4, the equipment room 7 is arranged on the left sides of the sedimentation tank 5 and the phosphorus removal tank 6, the pre-denitrification tank 1, the anaerobic tank 2 and the anoxic tank 3 are arranged on the right side of the aerobic tank 4, the anoxic tank 3 is positioned on the front sides of the pre-denitrification tank 1 and the anaerobic tank 2,
the sedimentation tank 5 is arranged at the front side of the phosphorus removal tank 6, a first overflow weir 60 is arranged at the upper part of the sedimentation tank 5, and the first overflow weir 60 is communicated with an overflow pipe 61 arranged in the phosphorus removal tank 6; the middle parts of the sedimentation tank 5 and the phosphorus removal tank 6 are respectively provided with a sedimentation tank guide cylinder 62 and a phosphorus removal tank guide cylinder 63, two sides of the sedimentation tank guide cylinder 62 are fixedly connected with first angle steel plates 64, and the first angle steel plates 64 are fixed on two side walls of the sedimentation tank 5 through bolt components and supporting steel plates 73; a second angle steel plate 66 is arranged on one side of the guide cylinder 63 of the dephosphorization pool, the second angle steel plate 66 is fixed on the side wall of the dephosphorization pool 6 through a bolt component and a support steel plate 73, the water inlet pipe of the guide cylinder 63 of the dephosphorization pool is connected with the overflow pipe 61, and the water inlet pipe of the guide cylinder 62 of the sedimentation pool is communicated with a domestic sewage water supply pipe 59 to be sedimentated and treated, which is arranged on the upper part of the aerobic pool 4; the lower parts of the sedimentation tank 5 and the phosphorus removal tank 6 are gradually contracted to form a quadrangular pyramid structure, the bottoms of the sedimentation tank 5 and the phosphorus removal tank 6 are respectively provided with a sedimentation tank sludge discharge pipeline 67 and a phosphorus removal tank sludge discharge pipeline 68 which extend out of the equipment room 7, and the sedimentation tank sludge discharge pipeline 67 and the phosphorus removal tank sludge discharge pipeline 68 are respectively provided with a stop valve 69 and an opening-adjustable electromagnetic valve 70; a second overflow weir 71 is arranged at the upper part of the phosphorus removal tank 6, a water outlet 72 is arranged in the second overflow weir 71, and a phosphorus removal agent feeding pipeline is also arranged in the phosphorus removal tank 6;
the device also comprises an aeration system, wherein the aeration system comprises a pre-denitrification pool air inlet 11, an anoxic pool air inlet 12, an anaerobic pool air inlet 13 and an aerobic pool air inlet 14 which are arranged at the upper part of the equipment room 7; the air inlet 11 of the pre-denitration pool is connected with an air inlet pipe 15 of the pre-denitration pool, and the air inlet pipe 15 of the pre-denitration pool sequentially passes through the tops of the sedimentation pool 5, the aerobic pool 4 and the anoxic pool 3 and extends into the upper part of the pre-denitration pool 1 to extend downwards to be communicated with a first annular pipeline 16 arranged at the bottom of the pre-denitration pool 1; the anoxic tank air inlet 12 is connected with an anoxic tank air inlet pipe 17, and the anoxic tank air inlet pipe 17 sequentially penetrates through the upper parts of the sedimentation tank 5 and the aerobic tank 4, enters the upper part of the anoxic tank 3, then extends downwards and is communicated with a second annular pipeline 18 arranged at the bottom of the anoxic tank 3; the anaerobic tank air inlet 13 is connected with an anaerobic tank air inlet pipe 19, and the anaerobic tank air inlet pipe 19 sequentially penetrates through the upper parts of the sedimentation tank 5, the aerobic tank 4 and the anoxic tank 3, enters the upper part of the anaerobic tank 2, then extends downwards and is communicated with a third annular pipeline 20 arranged at the bottom of the anaerobic tank 2; the air inlet 14 of the aerobic tank is connected with an air inlet pipe 21 of the aerobic tank, the air inlet pipe 21 of the aerobic tank penetrates through the upper part of the sedimentation tank 5, enters the upper part of the aerobic tank 4, extends downwards and is communicated with an aeration main pipe 22 arranged at the bottom of the aerobic tank 4, the aeration main pipe 22 is arranged at the bottom of the aerobic tank 4 in a shape like Chinese character 'ri', and a plurality of groups of aeration discs 23 are uniformly arranged on the aeration main pipe 22; a plurality of air outlet holes are uniformly formed in the first annular pipeline 16, the second annular pipeline 18 and the third annular pipeline 20;
the device also comprises a gas stripping reflux system, wherein the gas stripping reflux system comprises a sedimentation tank reflux air inlet 40 and an aerobic tank reflux air inlet 41 which are arranged at the upper part of the equipment room 7; a first gas stripping groove 43 is formed in the top of the sedimentation tank 5, a first gas sludge extracting pipe 44 extending to the bottom of the sedimentation tank 5 is connected to the bottom of the first gas stripping groove 43, a first return pipe 45 communicated with the aerobic tank 4 and the pre-denitrification tank 1 is further arranged on the first gas stripping groove 43, the sedimentation tank return gas inlet 40 is connected with a sedimentation tank return gas inlet pipe 42, and the sedimentation tank return gas inlet pipe 42 extends into the lower portion of the sedimentation tank 5 from the top of the sedimentation tank and is communicated with the lower portion of the first gas sludge extracting pipe 44; a second gas stripping groove 46 is formed in the top of the aerobic tank 4, a second gas stripping mud pumping pipe 47 extending to the bottom of the aerobic tank 4 is connected to the bottom of the second gas stripping groove 46, a second return pipe 48 communicated to the anoxic tank 3 is arranged on the second gas stripping groove 46, and a stainless steel protective cage 49 is arranged at the bottom end of the second gas stripping mud pumping pipe 47; the aerobic tank reflux air inlet 41 is connected with an aerobic tank reflux air inlet pipe 50, and the aerobic tank reflux air inlet pipe 50 penetrates through the top of the sedimentation tank 5, extends into the upper part of the aerobic tank 4, extends downwards and is communicated with the lower part of the second air-stripping sludge pumping pipe 47.
And the gas inlet ends of the pre-denitrification tank gas inlet 11, the anoxic tank gas inlet 12, the anaerobic tank gas inlet 13, the aerobic tank gas inlet 14, the sedimentation tank backflow gas inlet 40 and the aerobic tank backflow gas inlet 41 are connected with a gas distribution cylinder and a rotary fan which are arranged in the equipment room 7 through pipelines.
The stainless steel cage 49 is fixed at the bottom of the aerobic tank 4 through a cage support 51.
And water passing holes are formed between the pre-denitration tank 1 and the anaerobic tank 2, between the anaerobic tank 2 and the anoxic tank 3 and between the anoxic tank 3 and the aerobic tank 4.
And the water inlet pipe of the guide cylinder 63 of the dephosphorization tank is connected with the connecting end of the overflow pipe 61 through a stainless steel flange.
The inlet pipe of the sedimentation basin draft tube 62 is positioned at a height lower than the height of the overflow weir 60.
The height of the second overflow weir 71 is lower than that of the water inlet pipe of the guide cylinder 63 of the dephosphorization tank.
The working principle is as follows: the air is respectively conveyed to the air inlet ends of the air inlet 11 of the pre-denitration pool, the air inlet 12 of the anoxic pool, the air inlet 13 of the anaerobic pool and the air inlet 14 of the aerobic pool by the rotary fan and the branch cylinder through pipelines, then the inflation is respectively conveyed to the first annular pipeline 16, the second annular pipeline 18, the third annular pipeline 20 and the main aeration pipe 22 through the air inlet pipe 15 of the pre-denitration pool, the air inlet pipe 17 of the anoxic pool, the air inlet pipe 19 of the anaerobic pool and the air inlet pipe 21 of the aerobic pool, the inflated air is discharged to the bottoms of the pre-denitration pool 1, the anoxic pool 3, the anaerobic pool 2 and the aerobic pool 4 through the air outlet holes and the aeration disc to achieve an aeration effect, and the flow of the gas in each pipeline is adjusted by the branch cylinder to achieve different.
The air is respectively conveyed to the air inlet ends of the sedimentation tank backflow air inlet 40 and the aerobic tank backflow air inlet 41 through pipelines by the rotary fan and the air distribution cylinder, then the aerated air is respectively conveyed to the first air-lifting mud-pumping pipe 44 and the second air-lifting mud-pumping pipe 47 through the sedimentation tank backflow air inlet pipe 42 and the aerobic tank backflow air inlet pipe 50, so that the sludge pumping part at the bottom of the sedimentation tank 5 flows back to the aerobic tank 4 and/or the pre-denitrification tank 1 through the first backflow pipe 45, the sludge pumping part at the bottom of the aerobic tank 4 flows back to the anoxic tank 3 through the second backflow pipe 48, and the flow of the gas in each pipeline is adjusted through the air distribution cylinder to achieve different air-lifting backflow rates in each tank body.
After the domestic sewage is pretreated by the pre-denitrification tank 1, the anaerobic tank 2, the anoxic tank 3 and the aerobic tank 4, the sewage is sent into the sedimentation tank guide cylinder 62 through the water inlet pipe of the sedimentation tank guide cylinder 62 by the domestic sewage water sending pipe 59 to be precipitated, the precipitate is precipitated downwards under the influence of gravity, the water overflows from the upper part of the sedimentation tank guide cylinder 62 and then enters the dephosphorization tank guide cylinder 63 through the first overflow weir 60 and the overflow pipe 61, the precipitate sinks to the bottom of the dephosphorization tank 6 under the action of gravity, the water overflows from the upper part of the dephosphorization tank guide cylinder 63 and then is mixed with a dephosphorization agent, and then the water flows out through the second overflow weir 71 and the water outlet 72, so that the purified sewage can be obtained. And a sedimentation tank sludge discharge pipeline 67 and a phosphorus removal tank sludge discharge pipeline 68 which extend out of the bottoms of the sedimentation tank 5 and the phosphorus removal tank 6 discharge the precipitated sludge through a control stop valve 69 and an electromagnetic valve 70 with adjustable opening.
Claims (7)
1. An integrated system for treating overground domestic sewage comprises an equipment room (7) arranged in a box body, and a pre-denitrification pool (1), an anaerobic pool (2), an anoxic pool (3), an aerobic pool (4), a sedimentation pool (5) and a dephosphorization pool (6) which are sequentially communicated; the aerobic tank (4) is positioned in the middle of the box body, the sedimentation tank (5) and the phosphorus removal tank (6) are arranged on the left side of the aerobic tank (4), the equipment room (7) is arranged on the left sides of the sedimentation tank (5) and the phosphorus removal tank (6), the pre-denitrification tank (1), the anaerobic tank (2) and the anoxic tank (3) are arranged on the right side of the aerobic tank (4), the anoxic tank (3) is positioned on the front sides of the pre-denitrification tank (1) and the anaerobic tank (2), and the device is characterized in that,
the sedimentation tank (5) is arranged on the front side of the phosphorus removal tank (6), a first overflow weir (60) is arranged at the upper part of the sedimentation tank (5), and the first overflow weir (60) is communicated with an overflow pipe (61) arranged in the phosphorus removal tank (6); the middle parts of the sedimentation tank (5) and the phosphorus removal tank (6) are respectively provided with a sedimentation tank guide cylinder (62) and a phosphorus removal tank guide cylinder (63), two sides of the sedimentation tank guide cylinder (62) are fixedly connected with first angle steel plates (64), and the first angle steel plates (64) are fixed on two side walls of the sedimentation tank (5) through bolt assemblies and supporting steel plates (73); a second angle steel plate (66) is arranged on one side of the guide cylinder (63) of the dephosphorization pool, the second angle steel plate (66) is fixed on the side wall of the dephosphorization pool (6) through a bolt component and a support steel plate (73), the water inlet pipe of the guide cylinder (63) of the dephosphorization pool is connected with the overflow pipe (61), and the water inlet pipe of the guide cylinder (62) of the sedimentation pool is communicated with a water supply pipe (59) of domestic sewage to be precipitated and treated, which is arranged at the upper part of the aerobic pool (4); the lower parts of the sedimentation tank (5) and the phosphorus removal tank (6) gradually contract to form a quadrangular pyramid structure, the bottoms of the sedimentation tank (5) and the phosphorus removal tank (6) are respectively provided with a sedimentation tank sludge discharge pipeline (67) and a phosphorus removal tank sludge discharge pipeline (68) which extend out of the equipment room (7), and the sedimentation tank sludge discharge pipeline (67) and the phosphorus removal tank sludge discharge pipeline (68) are respectively provided with a stop valve (69) and an electromagnetic valve (70) with adjustable opening degree; a second overflow weir (71) is arranged at the upper part of the phosphorus removal tank (6), a water outlet (72) is arranged in the second overflow weir (71), and a phosphorus removal agent feeding pipeline is also arranged in the phosphorus removal tank (6);
the device also comprises an aeration system, wherein the aeration system comprises a pre-denitrification pool air inlet (11), an anoxic pool air inlet (12), an anaerobic pool air inlet (13) and an aerobic pool air inlet (14) which are arranged at the upper part of the equipment room (7); the pre-denitration pool air inlet (11) is connected with a pre-denitration pool air inlet pipe (15), and the pre-denitration pool air inlet pipe (15) sequentially penetrates through the tops of the sedimentation tank (5), the aerobic tank (4) and the anoxic tank (3) and extends into the upper part of the pre-denitration pool (1) to extend downwards to be communicated with a first annular pipeline (16) arranged at the bottom of the pre-denitration pool (1); the anoxic tank air inlet (12) is connected with an anoxic tank air inlet pipe (17), and the anoxic tank air inlet pipe (17) sequentially penetrates through the upper parts of the sedimentation tank (5) and the aerobic tank (4) to enter the upper part of the anoxic tank (3) and then extends downwards to be communicated with a second annular pipeline (18) arranged at the bottom of the anoxic tank (3); the anaerobic tank air inlet (13) is connected with an anaerobic tank air inlet pipe (19), and the anaerobic tank air inlet pipe (19) sequentially penetrates through the upper parts of the sedimentation tank (5), the aerobic tank (4) and the anoxic tank (3) to enter the upper part of the anaerobic tank (2) and then extends downwards to be communicated with a third annular pipeline (20) arranged at the bottom of the anaerobic tank (2); the aerobic tank air inlet (14) is connected with an aerobic tank air inlet pipe (21), the aerobic tank air inlet pipe (21) penetrates through the upper part of the sedimentation tank (5) and enters the upper part of the aerobic tank (4) to extend downwards to be communicated with an aeration main pipe (22) arranged at the bottom of the aerobic tank (4), the aeration main pipe (22) is arranged at the bottom of the aerobic tank (4) in a shape like Chinese character Yu, and a plurality of groups of aeration discs (23) are uniformly arranged on the aeration main pipe (22); a plurality of air outlet holes are uniformly formed in the first annular pipeline (16), the second annular pipeline (18) and the third annular pipeline (20);
the device also comprises a gas stripping reflux system, wherein the gas stripping reflux system comprises a sedimentation tank reflux air inlet (40) and an aerobic tank reflux air inlet (41) which are arranged at the upper part of the equipment room (7); a first gas stripping groove (43) is formed in the top of the sedimentation tank (5), a first gas stripping mud pipe (44) extending to the bottom of the sedimentation tank (5) is connected to the bottom of the first gas stripping groove (43), a first return pipe (45) communicated to the aerobic tank (4) and the pre-denitrification tank (1) is further arranged on the first gas stripping groove (43), a sedimentation tank return air inlet (40) is connected with a sedimentation tank return air inlet pipe (42), and the sedimentation tank return air inlet pipe (42) extends into the lower portion of the sedimentation tank (5) from the top of the sedimentation tank and is communicated with the lower portion of the first gas stripping mud pipe (44); a second gas stripping groove (46) is formed in the top of the aerobic tank (4), a second gas stripping mud pumping pipe (47) extending to the bottom of the aerobic tank (4) is connected to the bottom of the second gas stripping groove (46), a second return pipe (48) communicated with the anoxic tank (3) is arranged on the second gas stripping groove (46), and a stainless steel protective cage (49) is arranged at the bottom end of the second gas stripping mud pumping pipe (47); the aerobic tank backflow air inlet (41) is connected with an aerobic tank backflow air inlet pipe (50), and the aerobic tank backflow air inlet pipe (50) penetrates through the top of the sedimentation tank (5), extends into the upper part of the aerobic tank (4), extends downwards and is communicated with the lower part of the second air stripping mud pumping pipe (47).
2. The integrated system for treating the above-ground domestic sewage according to claim 1, wherein the inlet ends of the pre-denitrification tank inlet (11), the anoxic tank inlet (12), the anaerobic tank inlet (13), the aerobic tank inlet (14), the sedimentation tank return inlet (40) and the aerobic tank return inlet (41) are connected with a branch cylinder and a rotary fan which are arranged in the equipment room (7) through pipelines.
3. The integrated system for treating domestic sewage of the above-ground type according to claim 1, wherein the stainless steel cage (49) is fixed at the bottom of the aerobic tank (4) by a cage support (51).
4. The integrated system for treating the above-ground domestic sewage according to claim 1, wherein water through holes are arranged between the pre-denitrification tank (1) and the anaerobic tank (2), between the anaerobic tank (2) and the anoxic tank (3) and between the anoxic tank (3) and the aerobic tank (4).
5. The integrated system for treating the above-ground domestic sewage according to claim 1, wherein the connection end of the water inlet pipe of the guide cylinder (63) of the dephosphorization pool and the overflow pipe (61) is connected through a stainless steel flange.
6. The integrated system for treating domestic sewage of claim 1, wherein the inlet pipe of the sedimentation tank guide cylinder (62) is located at a lower height than the overflow weir (60).
7. The integrated system for treating domestic sewage of claim 1, wherein the height of the second overflow weir (71) is lower than the height of the inlet pipe of the guide cylinder (63) of the dephosphorization pool.
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| CN202021039692.8U CN212451078U (en) | 2020-06-09 | 2020-06-09 | Integrated system for treating overground type domestic sewage |
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| CN202021039692.8U CN212451078U (en) | 2020-06-09 | 2020-06-09 | Integrated system for treating overground type domestic sewage |
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