Sunken comprehensive sewage treatment plant

Abstract

The utility model relates to a sinking type comprehensive sewage treatment plant which comprises a foundation pit formed by excavating 14-24.5 m below the ground, a bottom plate and a column net are poured in the foundation pit through reinforced concrete, and a partition plate and a top plate are poured on the column net through reinforced concrete. A domestic sewage treatment system, an industrial sewage treatment system and a sludge drying workshop are built on the bottom plate, the domestic sewage treatment system and the industrial sewage treatment system are communicated with the sludge drying workshop through sludge conveying pipelines provided with sludge conveying pumps, and a carbonization workshop and a park green land are built at the top end of the top plate. Ventilation systems are installed at the bottom of the interlayer plate and the bottom of the top plate respectively. The system has the beneficial effects that domestic and industrial sewage treatment dual systems are constructed at the same time, and a large amount of sewage treatment equipment is hidden under the park green land, so that the urban interface of a sewage treatment plant area is beautified; gas with peculiar smell in the sewage treatment plant can be conveniently collected, and the air environment of the sewage treatment plant area and the surrounding is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sunken comprehensive sewage treatment plant. Background Art

[0002] With the rapid development of the urban structure integrating industry and city, there are a large number of residential areas and commercial places, as well as a large number of industrial plants in the same urban area. Therefore, a large amount of domestic sewage and industrial sewage will be generated at the same time in the same urban area. The existing urban sewage treatment plants generally only have domestic sewage treatment systems, and they are all located on the ground. The odorous gases are difficult to collect and treat, and large areas of sewage treatment equipment are exposed on the ground, affecting the aesthetics of the urban interface. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a sunken comprehensive sewage treatment plant.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] A sunken comprehensive sewage treatment plant comprises a foundation pit formed by excavating 14 to 24.5 m below the ground, a foundation pit retaining structure is constructed around the foundation pit, a bottom plate and a column grid are cast with reinforced concrete in the foundation pit, an interlayer plate and a top plate are cast with reinforced concrete on the column grid, and vehicle entrances and exits connected to the interlayer plates are arranged at both ends of the foundation pit; a domestic sewage treatment system, an industrial sewage treatment system, and a sludge drying workshop are constructed on the bottom plate, the domestic sewage treatment system and the industrial sewage treatment system are connected to the sludge drying workshop through sludge conveying pipelines equipped with sludge conveying pumps, a carbonization workshop and a park green space are constructed on the top of the top plate, the sludge drying workshop is connected to the carbonization workshop through a bucket elevator, and ventilation systems are respectively installed at the bottom of the interlayer plate and the bottom of the top plate.

[0006] Among them, the domestic sewage treatment system includes a domestic sewage inlet well, a coarse screen, a first lifting pump, a first fine screen, a first vortex sand settling tank, a first fine screen, an A / O biochemical tank, a first secondary sedimentation tank, a first high-efficiency sedimentation tank, a first intermediate lifting pump, a first deep bed filter, a first sewage ultraviolet disinfection module, a first effluent metering well, and a first tailwater lifting pump, which are connected in sequence.

[0007] Among them, the A / O biochemical pool includes an anaerobic reaction tank, a first anoxic reaction tank, a second anoxic reaction tank, a first aerobic reaction tank, a third anoxic reaction tank, and a second aerobic reaction tank which are connected in sequence. Sludge return pipes are installed in the anaerobic reaction tank and the first anoxic reaction tank, and aerators are installed at the bottom of the first aerobic reaction tank and the second aerobic reaction tank.

[0008] Among them, the industrial sewage treatment system includes an industrial sewage inlet well, a second fine screen, a second lifting pump, a second fine screen, a regulating tank, a coagulation sedimentation tank, a hydrolysis acidification tank, an AAO biochemical tank, a second secondary sedimentation tank, a second high-efficiency sedimentation tank, a second intermediate lifting pump, an ozone contact tank, a second deep bed filter, a second sewage ultraviolet disinfection module, a second effluent metering well, and a second tailwater lifting pump, which are connected in sequence. An ozone generating room is also built on the top of the top plate, and an ozone generator is installed in the ozone generating room. The ozone generator is connected to the ozone inlet of the ozone contact tank through a pipe.

[0009] Among them, the sludge drying workshop is equipped with a sludge thickening tank, a sludge storage tank, a screw pump, a plate and frame filter press, and an intermediate silo which are connected in sequence. The sludge outlet of the sludge conveying pipeline is connected to the sludge inlet of the sludge thickening tank, and the discharge port of the intermediate silo faces the upper hopper of the bucket elevator.

[0010] Wherein, a sludge low-temperature dryer is installed in the carbonization workshop, and the discharge port of the bucket elevator is connected to the feed port of the sludge low-temperature dryer.

[0011] Among them, the ventilation system includes an air collecting hood, a UV photocatalytic oxidizer, an exhaust fan, a blower, and an air supply port arranged at the odor overflow location; the air collecting hood, UV photocatalytic oxidizer, and exhaust fan are connected by an exhaust duct; the blower and the air supply port are connected by an air supply duct; the top of the top plate is equipped with an exhaust shaft connected to the air outlet of the exhaust fan and an air inlet shaft connected to the air inlet of the blower.

[0012] Wherein, the foundation pit retaining structure includes a plurality of cast-in-place piles arranged in sequence, and the diameter of the cast-in-place piles is 1200 mm.

[0013] The column grid includes a plurality of reinforced concrete columns with a horizontal spacing and a vertical spacing of 7.5 m.

[0014] Among them, a fire pump room is built on the interlayer board, and a fire pump is installed in the fire pump room. Fire pipes are also installed at the bottom end of the interlayer board and the bottom end of the top plate. The water inlet of the fire pump is connected with the first deep bed filter of the domestic sewage treatment system and the second deep bed filter of the industrial sewage treatment system through a water pipe, and the water outlet of the fire pump is connected with the inlet of the fire pipe.

[0015] The beneficial effects of the utility model are as follows: a foundation pit retaining structure, a bottom plate, a column grid, a partition plate, and a top plate are constructed in the foundation pit; a domestic sewage treatment system, an industrial sewage treatment system, and a sludge drying workshop are constructed on the bottom plate; a carbonization workshop and a park green space are constructed on the top of the top plate. Not only are domestic and industrial sewage treatment systems constructed at the same time, but a large number of sewage treatment equipment are also hidden under the park green space, beautifying the urban interface of the sewage treatment plant area; ventilation systems are respectively installed at the bottom of the partition plate and the bottom of the top plate, which are convenient for collecting odorous gases in the sewage treatment plant and improving the air environment in the sewage treatment plant area and its surroundings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a process flow chart of the domestic sewage treatment system in the utility model;

[0018] Figure 2 It is a process flow chart of the industrial sewage treatment system in the utility model;

[0019] Figure 3 It is a process flow chart between the equipment in the sludge drying workshop and the carbonization workshop in the utility model;

[0020] Explanation of the reference numerals in the figure: domestic sewage inlet well 101, coarse screen 102, first lifting pump 103, first fine screen 104, first cyclone sand settling tank 105, first fine screen 106, A / O biochemical tank 107, anaerobic reaction tank 1071, first anoxic reaction tank 1072, second anoxic reaction tank 1073, first aerobic reaction tank 1074, third anoxic reaction tank 1075, second aerobic reaction tank 1076, first secondary sedimentation tank 108, first high-efficiency sedimentation tank 109, first intermediate lifting pump 110, first deep bed filter 111, first sewage ultraviolet disinfection module 112, first effluent metering well 113, first tail water pump Lifting pump 114, industrial sewage inlet well 201, second fine screen 202, second lifting pump 203, second fine screen 204, regulating tank 205, coagulation sedimentation tank 206, hydrolysis acidification tank 207, AA0 biochemical tank 208, second secondary sedimentation tank 209, second high-efficiency sedimentation tank 210, second intermediate lifting pump 211, ozone contact tank 212, second deep bed filter 213, second sewage ultraviolet disinfection module 214, second effluent metering well 215, second tailwater lifting pump 216, sludge thickening tank 301, sludge storage tank 302, screw pump 303, plate and frame filter press 304, intermediate silo 305, sludge low-temperature dryer 4. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0022] like Figures 1 to 3 As shown, a sunken comprehensive sewage treatment plant includes a foundation pit formed by excavating 14 to 24.5 meters below the ground, a foundation pit retaining structure is built around the foundation pit, the foundation pit retaining structure includes a number of cast-in-place piles arranged in sequence, and the diameter of the cast-in-place piles is 1200 mm; a bottom plate and a column grid are cast with reinforced concrete in the foundation pit, and the column grid includes a number of reinforced concrete columns with a horizontal and vertical spacing of 7.5 meters; an interlayer plate and a top plate are cast with reinforced concrete on the column grid, and vehicle entrances and exits connected to the interlayer plates are arranged at both ends of the foundation pit.

[0023] A domestic sewage treatment system, an industrial sewage treatment system and a sludge drying workshop are built on the bottom plate. The domestic sewage treatment system and the industrial sewage treatment system are connected to the sludge drying workshop through sludge conveying pipes equipped with sludge conveying pumps respectively. A carbonization workshop and a park green space are built on the top of the top plate. The sludge drying workshop is connected to the carbonization workshop through a bucket elevator. Ventilation systems are installed at the bottom of the interlayer plate and the bottom of the top plate respectively.

[0024] The domestic sewage treatment system includes a domestic sewage inlet well 101, a coarse screen 102, a first lift pump 103, a first fine screen 104, a first vortex sand settling tank 105, a first fine screen 106, an A / O biochemical tank 107, a first secondary sedimentation tank 108, a first high-efficiency sedimentation tank 109, a first intermediate lift pump 110, a first deep bed filter 111, a first sewage ultraviolet disinfection module 112, a first effluent metering well 113, and a first tailwater lift pump 114, which are connected in sequence.

[0025] The A / O biochemical pool includes an anaerobic reaction tank 1071, a first anoxic reaction tank 1072, a second anoxic reaction tank 1073, a first aerobic reaction tank 1074, a third anoxic reaction tank 1075, and a second aerobic reaction tank 1076 which are connected in sequence. Sludge return pipes are installed in the anaerobic reaction tank and the first anoxic reaction tank, and aerators are installed at the bottom of the first aerobic reaction tank and the second aerobic reaction tank.

[0026] The industrial sewage treatment system includes an industrial sewage inlet well 201, a second fine screen 202, a second lift pump 203, a second fine screen 204, a regulating tank 205, a coagulation sedimentation tank 206, a hydrolysis acidification tank 207, an AAO biochemical tank 208, a second secondary sedimentation tank 209, a second high-efficiency sedimentation tank 210, a second intermediate lift pump 211, an ozone contact tank 212, a second deep bed filter 213, a second sewage ultraviolet disinfection module 214, a second effluent metering well 215, and a second tailwater lift pump 216, which are connected in sequence. An ozone generating room is also built on the top of the top plate. An ozone generator is installed in the ozone generating room, and the ozone generator is connected to the ozone inlet of the ozone contact tank through a pipeline.

[0027] The sludge drying workshop is equipped with a sludge thickening tank 301, a sludge storage tank 302, a screw pump 303, a plate and frame filter press 304, and an intermediate silo 305 which are connected in sequence. The sludge outlet of the sludge conveying pipeline is connected to the sludge inlet of the sludge thickening tank, and the discharge port of the intermediate silo faces the upper hopper of the bucket elevator.

[0028] A sludge low-temperature dryer 4 is installed in the carbonization workshop, and the discharge port of the bucket elevator is connected to the feed port of the sludge low-temperature dryer.

[0029] The ventilation system includes an air collecting hood, a UV photocatalytic oxidizer, an exhaust fan, a blower, and an air supply port, which are arranged at the place where the odor overflows. The air collecting hood, the UV photocatalytic oxidizer, and the exhaust fan are connected by an exhaust duct, and the blower and the air supply port are connected by an air supply duct. An exhaust shaft connected to the air outlet of the exhaust fan and an air inlet shaft connected to the air inlet of the blower are installed at the top of the top plate.

[0030] A fire pump room is built on the interlayer board, and a fire pump is installed in the fire pump room. Fire pipes are also installed at the bottom of the interlayer board and the bottom of the top plate. The water inlet of the fire pump is connected with the first deep bed filter of the domestic sewage treatment system and the second deep bed filter of the industrial sewage treatment system through a water pipe, and the water outlet of the fire pump is connected with the inlet of the fire pipe.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A sunken integrated sewage treatment plant, characterized in that: It includes a foundation pit formed by excavating 14 to 24.5 meters below the ground, a foundation pit retaining structure is built around the foundation pit, a bottom plate and a column grid are cast with reinforced concrete in the foundation pit, an interlayer plate and a top plate are cast with reinforced concrete on the column grid, and vehicle entrances and exits connected to the interlayer plates are arranged at both ends of the foundation pit; a domestic sewage treatment system, an industrial sewage treatment system, and a sludge drying workshop are built on the bottom plate, and the domestic sewage treatment system and the industrial sewage treatment system are connected to the sludge drying workshop through sludge conveying pipelines equipped with sludge conveying pumps, respectively, a carbonization workshop and a park green space are built on the top of the top plate, and the sludge drying workshop is connected to the carbonization workshop through a bucket elevator, and ventilation systems are installed at the bottom of the interlayer plate and the bottom of the top plate, respectively.

2. The sunken integrated sewage treatment plant according to claim 1, characterized in that: The domestic sewage treatment system includes a domestic sewage inlet well, a coarse screen, a first lifting pump, a first fine screen, a first vortex sand settling tank, a first fine screen, an A / O biochemical tank, a first secondary sedimentation tank, a first high-efficiency sedimentation tank, a first intermediate lifting pump, a first deep bed filter, a first sewage ultraviolet disinfection module, a first effluent metering well, and a first tailwater lifting pump, which are connected in sequence.

3. The sunken integrated sewage treatment plant according to claim 2 is characterized in that: The A / O biochemical pool comprises an anaerobic reaction tank, a first anoxic reaction tank, a second anoxic reaction tank, a first aerobic reaction tank, a third anoxic reaction tank, and a second aerobic reaction tank which are connected in sequence. Sludge return pipes are installed in the anaerobic reaction tank and the first anoxic reaction tank, and aerators are installed at the bottom of the first aerobic reaction tank and the second aerobic reaction tank.

4. The sunken integrated sewage treatment plant according to claim 1, characterized in that: The industrial sewage treatment system includes an industrial sewage inlet well, a second fine screen, a second lifting pump, a second fine screen, a regulating tank, a coagulation sedimentation tank, a hydrolysis acidification tank, an AAO biochemical tank, a second secondary sedimentation tank, a second high-efficiency sedimentation tank, a second intermediate lifting pump, an ozone contact tank, a second deep bed filter, a second sewage ultraviolet disinfection module, a second effluent metering well, and a second tailwater lifting pump, which are connected in sequence. An ozone generating room is also built on the top of the top plate, and an ozone generator is installed in the ozone generating room. The ozone generator is connected to the ozone inlet of the ozone contact tank through a pipeline.

5. The sunken integrated sewage treatment plant according to claim 1, characterized in that: The sludge drying workshop is equipped with a sludge thickening tank, a sludge storage tank, a screw pump, a plate and frame filter press, and an intermediate silo which are connected in sequence. The sludge outlet of the sludge conveying pipeline is connected to the sludge inlet of the sludge thickening tank, and the discharge port of the intermediate silo faces the upper hopper of the bucket elevator.

6. The sunken integrated sewage treatment plant according to claim 1, characterized in that: A sludge low-temperature dryer is installed in the carbonization workshop, and the discharge port of the bucket elevator is connected to the feed port of the sludge low-temperature dryer.

7. The sunken integrated sewage treatment plant according to claim 1 is characterized in that: The ventilation system includes an air collecting hood, a UV photocatalytic oxidizer, an exhaust fan, a blower, and an air supply port, which are arranged at the place where the odor overflows. The air collecting hood, the UV photocatalytic oxidizer, and the exhaust fan are connected by an exhaust duct, and the blower is connected to the air supply port by an air supply duct. The top of the top plate is equipped with an exhaust shaft connected to the air outlet of the exhaust fan and an air inlet shaft connected to the air inlet of the blower.

8. The sunken integrated sewage treatment plant according to claim 1, characterized in that: The foundation pit retaining structure includes a plurality of cast-in-place piles arranged in sequence, and the diameter of the cast-in-place piles is 1200 mm.

9. The sunken integrated sewage treatment plant according to claim 1, characterized in that: The column grid includes a plurality of reinforced concrete columns with a horizontal spacing and a longitudinal spacing of 7.5 m.

10. The sunken integrated sewage treatment plant according to claim 1, characterized in that: A fire pump room is built on the interlayer board, and a fire pump is installed in the fire pump room. Fire pipes are also installed at the bottom end of the interlayer board and the bottom end of the top plate. The water inlet of the fire pump is connected with the first deep bed filter of the domestic sewage treatment system and the second deep bed filter of the industrial sewage treatment system through a water pipe, and the water outlet of the fire pump is connected with the inlet of the fire pipe.

Images