Integrated oxidation ditch system

Abstract

The utility model relates to the technical field of sewage purification, in particular to an integrated oxidation ditch system which comprises a pool body, a backflow pipeline and a backflow pump, an aerobic zone, an anoxic zone and an anaerobic zone are sequentially arranged in the pool body in the first direction, the backflow pump is located in the aerobic zone, and the anaerobic zone is located in the anoxic zone. The backflow pipeline sequentially penetrates through the aerobic zone, the anoxic zone and the anaerobic zone in the first direction, one end of the backflow pipeline is connected with the backflow pump, the other end of the backflow pipeline is communicated with the anaerobic zone, and the first direction is the length direction of the tank body. The utility model aims to provide an integrated oxidation ditch system aiming at at least one technical problem related in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of sewage purification, and in particular to an integrated oxidation ditch system. Background Art

[0002] The traditional integrated oxidation ditch system has a good effect on the removal of COD and ammonia nitrogen, but the removal effect on total nitrogen is poor. In recent years, with the rapid advancement of my country's urbanization process, the discharge of urban sewage and the intensity of pollutant emissions have also increased, and the problem of nitrogen pollution in sewage is particularly prominent. Ensuring a good denitrification effect has become an important issue that urban sewage treatment plants need to solve urgently. Utility Model Content

[0003] The purpose of the present application is to provide an integrated oxidation ditch system in view of at least one technical problem involved in the background technology.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] The present application provides an integrated oxidation ditch system, including a tank body, a reflux pipe and a reflux pump. In a first direction, an aerobic zone, an anoxic zone and an anaerobic zone are sequentially arranged in the tank body. The reflux pump is located in the aerobic zone. The reflux pipe sequentially passes through the aerobic zone, the anoxic zone and the anaerobic zone in the first direction. One end of the reflux pipe is connected to the reflux pump, and the other end of the reflux pipe is connected to the anaerobic zone. The first direction is the length direction of the tank body.

[0006] Optionally, a communication port communicating with the anoxic zone is formed on the return pipe, and the communication port is located at a position of the anoxic zone close to the anaerobic zone.

[0007] The beneficial effect of this technical solution is that the nitrification liquid can be forcibly sent to one end of the anoxic zone close to the anaerobic zone through the reflux pipeline, so that the nitrification liquid can be dephosphorized and denitrified in the anoxic zone.

[0008] Optionally, a water valve is also installed on the return pipe, and the water valve is located downstream of the connecting port.

[0009] The beneficial effect of this technical solution is that, by controlling the switch of the water valve, it is possible to decide whether to send the nitrification liquid only to the anoxic zone, or to send the nitrification liquid to both the anaerobic zone and the anoxic zone. Specifically, according to the incoming water conditions, the denitrification and phosphorus removal capacity is adjusted by sending the nitrification liquid to the anoxic zone and the anaerobic zone. If the total nitrogen in the incoming water is high and the total phosphorus is low, the water valve is opened to send the nitrification liquid to the anaerobic zone and the anoxic zone, so that the anaerobic zone becomes a part of the anoxic zone, so as to increase the effective volume of the anoxic zone, increase the denitrification time, and improve the denitrification capacity; if the total nitrogen in the incoming water is low and the total phosphorus is high, the water valve can be closed, and the nitrification liquid is only returned to the anoxic zone, and the anaerobic zone is used for phosphorus removal, and the anoxic zone is used for nitrogen removal.

[0010] Optionally, the reflux pump is located at the end of the aerobic zone in the first direction.

[0011] The beneficial effect of this technical solution is that it is convenient to return the nitrification liquid at the end of the aerobic zone to the anaerobic zone and / or the anoxic zone, so that the utilization rate of the nitrification liquid is more efficient.

[0012] Optionally, the integrated oxidation ditch system provided in the present application further includes a curved guide wall, which is located at the end of the aerobic zone, the concave surface of the curved guide wall is away from the anoxic zone, and a gap is left between the curved guide wall and the pool wall of the pool body in the second direction, and the reflux pump is located in the gap.

[0013] The beneficial effect of this technical solution is that the purpose of the arc-shaped guide wall is to circulate the sewage in the aerobic zone at the end of the aerobic zone, and the reflux pump is arranged in the gap between the arc-shaped guide wall and the pool wall, so that the sewage just passes through the reflux pump during the circulation process, and then the reflux pump can continuously return the nitrification liquid to the anaerobic zone and / or the anoxic zone.

[0014] Optionally, in a second direction, the reflux pipe and the reflux pump are both arranged close to the pool wall of the pool body, and the second direction is the width direction of the pool body.

[0015] The beneficial effects of this technical solution are: on the one hand, compared with arranging the reflux pipe and the reflux pump at the bottom of the pool body, it is easier for staff to approach the reflux pipe and the reflux pump, thereby facilitating the maintenance and renovation of the reflux pipe and the reflux pump, especially facilitating renovation without stopping the water supply or for a short period of time; on the other hand, it is also convenient to fix the reflux pipe to the pool wall.

[0016] Optionally, the integrated oxidation ditch system provided in the present application further includes a bridge workbench, the length direction of the bridge workbench is parallel to the second direction, one end of the bridge workbench in the length direction is fixed to the top of the pool wall, and the other end of the bridge workbench is located above the pool body. The reflux pump is installed on the bridge workbench, and the reflux pump is located in the middle of the pool body in the third direction, and the third direction is the depth direction of the pool body.

[0017] The beneficial effects of this technical solution are: the bridge workbench is located above the tank body, which is convenient for the maintenance of the bridge workbench; and, if the reflux pump is set at the bottom of the tank, the sludge concentration at the bottom of the tank is relatively high, so the reflux efficiency of the nitrification liquid is low. However, the sludge concentration in the middle of the tank body in the depth direction of the tank body is moderate, and the reflux efficiency is relatively high when the reflux pump is set in the middle of the tank body, and it is more convenient for the staff to approach the reflux pump to repair, modify and install the reflux pump.

[0018] Optionally, the integrated oxidation ditch system provided in the present application further includes a hanger, the top end of which is fixed to the bridge workbench, and the reflux pump is installed on the hanger.

[0019] The beneficial effect of this technical solution is that if a support member fixed to the bottom of the tank body is provided to support the reflux pump, at least a portion of the support member will be buried in the sludge at the bottom of the tank body, making it inconvenient for staff to maintain and modify the bracket. In the present application, a hanger with the top fixed to the bridge workbench is provided to install the reflux pump, which avoids the problem of the hanger being buried in the sludge at the bottom of the tank body and facilitates staff to repair and modify the hanger.

[0020] Optionally, the hanger includes a strap and two hanger plates extending in the third direction, the top end of the hanger plate is fixed to the bridge workbench, the two hanger plates are arranged opposite to each other in the second direction, the strap is located between the two hanger plates, and the strap is fixedly connected to the two hanger plates, the reflux pump is located between the two hanger plates, and the reflux pump is fixed to the top of the strap.

[0021] The beneficial effect of this technical solution is that the reflux pump can be arranged in a space enclosed by the strapping plate and the two hanging plates, and the strapping plate and the two hanging plates jointly bear the weight of the reflux pump, thereby improving the reliability of the hanger.

[0022] Optionally, the integrated oxidation ditch system provided in the present application further includes a bracket, which is fixed to the pool wall, and the position of the reflux pipe in the third direction is the same as that of the reflux pump, and the reflux pump is fixed to the bracket.

[0023] The beneficial effect of this technical solution is that, compared with fixing the bracket to the bottom of the pool body, fixing the bracket to the pool wall and making the height of the reflux pipe the same as the reflux pump facilitates maintenance and modification of the bracket and the reflux pipe installed on the bracket.

[0024] The technical solution provided by this application can achieve at least one of the following beneficial effects:

[0025] The integrated oxidation ditch system provided in the present application, when in use, connects the aerobic zone and the anaerobic zone through a reflux pump and a reflux pipe, so that the digestion liquid in the aerobic zone can be forced to flow back to the anaerobic zone, thereby increasing the reflux rate of the nitrification liquid, thereby greatly improving the denitrification effect of the integrated oxidation ditch system; and, the staff can adjust the flow rate of the reflux pump according to the concentration of pollutants to be removed, thereby adjusting the reflux rate of the nitrification liquid, so as to achieve the effect of adjusting the digestion reaction time and saving energy and reducing consumption.

[0026] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A partial top view structural schematic diagram of an implementation method of an integrated oxidation ditch system provided in an embodiment of the present application;

[0029] Figure 2 A partial cross-sectional structural schematic diagram of an implementation scheme of an integrated oxidation ditch system provided in an example of the present application.

[0030] Reference numerals:

[0031] 1- Reflux pump; 2- Bridge workbench;

[0032] 3-return pipe; 31-water valve;

[0033] 32-connecting port; 4-anaerobic zone;

[0034] 5- anoxic zone; 6- aerobic zone;

[0035] 7- pool body; 8- arc-shaped diversion wall;

[0036] 9-hanging bracket; 92-hanging plate;

[0037] 93-Building boards. DETAILED DESCRIPTION

[0038] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] like Figure 1 and Figure 2 As shown, the present application provides an integrated oxidation ditch system, including a tank body 7, a reflux pipe 3 and a reflux pump 1. In a first direction, an aerobic zone 6, an anoxic zone 5 and an anaerobic zone 4 are sequentially arranged in the tank body 7. The reflux pump 1 is located in the aerobic zone 6. The reflux pipe 3 sequentially passes through the aerobic zone 6, the anoxic zone 5 and the anaerobic zone 4 in the first direction. One end of the reflux pipe 3 is connected to the reflux pump 1, and the other end of the reflux pipe 3 is connected to the anaerobic zone 4. The first direction is the length direction of the tank body 7.

[0042] The integrated oxidation ditch system provided in the present application, when in use, connects the aerobic zone 6 and the anaerobic zone 4 through the reflux pump 1 and the reflux pipe 3, so that the digestion liquid in the aerobic zone 6 can be forced to flow back to the anaerobic zone 4, thereby increasing the reflux amount of the nitrification liquid, thereby greatly improving the denitrification effect of the integrated oxidation ditch system; and the staff can adjust the flow of the reflux pump 1 according to the concentration of pollutants to be removed, thereby adjusting the reflux flow of the nitrification liquid, so as to achieve the effect of adjusting the digestion reaction time and saving energy and reducing consumption.

[0043] Optionally, a communication port 32 connected to the anoxic zone 5 is formed on the reflux pipe 3, and the communication port 32 is located at a position of the anoxic zone 5 close to the anaerobic zone 4. That is, the nitrification liquid can be forcibly sent to one end of the anoxic zone 5 close to the anaerobic zone 4 through the reflux pipe 3, so that the nitrification liquid can be dephosphorized and denitrified in the anoxic zone 5.

[0044] Optionally, a water valve 31 is further installed on the return pipe 3, and the water valve 31 is located downstream of the communication port 32. The water valve 31 being located downstream of the communication port 32 means that when the water valve 31 is opened, the water in the return pipe 3 flows through the communication port 32 and the water valve 31 in sequence, and flows into the anoxic zone 5 and the anaerobic zone 4 respectively; and when the water valve 31 is closed, the water in the return pipe 3 only flows out from the communication port 32. In this way, by controlling the switch of the water valve 31, it can be determined whether to send the nitrification liquid only to the anoxic zone 5, or to send the nitrification liquid to both the anaerobic zone 4 and the anoxic zone 5. Specifically, according to the incoming water conditions, the denitrification and phosphorus removal capacity is adjusted by sending the nitrification liquid to the anoxic zone 5 and the anaerobic zone 4. If the total nitrogen in the incoming water is high and the total phosphorus is low, the water valve 31 is opened to send the nitrification liquid to the anaerobic zone 4 and the anoxic zone 5, so that the anaerobic zone 4 becomes a part of the anoxic zone 5, so as to increase the effective volume of the anoxic zone 5, increase the denitrification time, and improve the denitrification capacity; if the total nitrogen in the incoming water is low and the total phosphorus is high, the water valve 31 can be closed, and the nitrification liquid is only returned to the anoxic zone 5, and the anaerobic zone 4 is used for phosphorus removal, and the anoxic zone 5 is used for denitrification. The water valve described in the embodiment of the present application can be a submerged long-handled butterfly valve or a submerged long-handled gate valve.

[0045] Optionally, in the first direction, the reflux pump 1 is located at the end of the aerobic zone 6. In this way, it is convenient to reflux the nitrification liquid at the end of the aerobic zone 6 to the anaerobic zone 4 and / or the anoxic zone 5, so that the utilization rate of the nitrification liquid is more efficient. Of course, the reflux pump 1 can also be set in the middle of the aerobic zone 6 as needed.

[0046] Optionally, the integrated oxidation ditch system provided in the embodiment of the present application further includes an arc-shaped guide wall 8, the arc-shaped guide wall 8 is located at the end of the aerobic zone 6, the concave surface of the arc-shaped guide wall 8 is away from the anoxic zone 5, and a gap is left between the arc-shaped guide wall 8 and the pool wall of the pool body 7 in the second direction, and the reflux pump 1 is located in the gap. The purpose of the arc-shaped guide wall 8 is to circulate the sewage in the aerobic zone 6 at the end of the aerobic zone 6, and the reflux pump 1 is set in the gap between the arc-shaped guide wall and the pool wall, so that the sewage just passes through the reflux pump 1 during the circulation process, and then the reflux pump 1 can continuously return the nitrified liquid to the anaerobic zone 4 and / or the anoxic zone 5.

[0047] Optionally, the reflux pipe 3 and the reflux pump 1 are both arranged close to the wall of the pool body 7 in the second direction, and the second direction is the width direction of the pool body 7. Compared with arranging the reflux pipe 3 and the reflux pump 1 at the bottom of the pool body 7, it is easier for workers to approach the reflux pipe 3 and the reflux pump 1, thereby facilitating maintenance and renovation of the reflux pipe 3 and the reflux pump 1, especially facilitating renovation without water outage or short-term water outage, and also facilitating fixing the reflux pipe 3 on the pool wall.

[0048] Optionally, the integrated oxidation ditch system provided in the embodiment of the present application further includes a bridge workbench 2, wherein the length direction of the bridge workbench 2 is parallel to the second direction, one end of the bridge workbench 2 in the length direction is fixed to the top of the pool wall, and the other end of the bridge workbench 2 is located above the pool body 7, and the reflux pump 1 is installed on the bridge workbench 2, and the reflux pump 1 is located in the middle of the pool body 7 in the third direction, and the third direction is the depth direction of the pool body 7. The bridge workbench 2 is located above the pool body 7, which is convenient for the maintenance of the bridge workbench 2; and, if the reflux pump 1 is set at the bottom of the pool, the reflux efficiency of the nitrification liquid is low due to the high sludge concentration at the bottom of the pool, however, the sludge concentration in the middle of the pool body 7 in the depth direction of the pool body 7 is moderate, and the reflux efficiency of the reflux pump 1 is relatively high when it is set at the middle of the pool body 7, and it is more convenient for the staff to approach the reflux pump 1 to repair, modify and install the reflux pump 1.

[0049] Optionally, the integrated oxidation ditch system provided in the embodiment of the present application further includes a hanger 9, the top end of the hanger 9 is fixed to the bridge workbench 2, and the reflux pump 1 is installed on the hanger 9. If a support member fixed to the bottom of the tank body 7 is provided to support the reflux pump 1, at least a portion of the support member will be buried in the sludge at the bottom of the tank body 7, which is inconvenient for the staff to maintain and modify the bracket. In the present application, a hanger 9 with the top end fixed to the bridge workbench 2 is provided to install the reflux pump 1, which avoids the problem of the hanger 9 being buried in the sludge at the bottom of the tank body 7, and is convenient for the staff to repair and modify the hanger 9.

[0050] Optionally, the hanger 9 includes a strap 93 and two hanging plates 92 extending in the third direction, the top of the hanging plate 92 is fixed to the bridge workbench 2, the two hanging plates 92 are arranged opposite to each other in the second direction, the strap 93 is located between the two hanging plates 92, and the strap 93 is fixedly connected to the two hanging plates 92, the reflux pump 1 is located between the two hanging plates 92, and the reflux pump 1 is fixed on the top of the strap 93. In this way, the reflux pump 1 can be arranged in the space enclosed by the strap 93 and the two hanging plates 92, and the strap 93 and the two hanging plates 92 bear the weight of the reflux pump 1 together, thereby improving the reliability of the hanger 9. Of course, the hanger 9 provided in the embodiment of the present application can also be an L-shaped structure.

[0051] Optionally, the integrated oxidation ditch system provided in the embodiment of the present application further includes a bracket, the bracket is fixed to the pool wall, the position of the reflux pipe 3 in the third direction is the same as the reflux pump 1, and the reflux pipe 3 is fixed to the bracket. In this way, compared with fixing the bracket to the bottom of the pool body 7, fixing the bracket to the pool wall and making the height of the reflux pipe 3 the same as the reflux pump 1 facilitates maintenance and modification of the bracket and the reflux pipe 3 installed on the bracket.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. Integrated oxidation ditch system, characterized in that: The invention comprises a tank body, a reflux pipe and a reflux pump. In the first direction, an aerobic zone, an anoxic zone and an anaerobic zone are sequentially arranged in the tank body. The reflux pump is located in the aerobic zone. The reflux pipe sequentially passes through the aerobic zone, the anoxic zone and the anaerobic zone in the first direction. One end of the reflux pipe is connected to the reflux pump, and the other end of the reflux pipe is connected to the anaerobic zone. The first direction is the length direction of the tank body.

2. The integrated oxidation ditch system according to claim 1, characterized in that: A communication port communicating with the anoxic zone is formed on the return pipe, and the communication port is located at a position of the anoxic zone close to the anaerobic zone.

3. The integrated oxidation ditch system according to claim 2, characterized in that: A water valve is also installed on the return pipe, and the water valve is located downstream of the communication port.

4. The integrated oxidation ditch system according to claim 1, characterized in that: The reflux pump is located at the end of the aerobic zone in the first direction.

5. The integrated oxidation ditch system according to claim 4, characterized in that: It also includes an arc-shaped guide wall, which is located at the end of the aerobic zone, the concave surface of the arc-shaped guide wall is away from the anoxic zone, a gap is left between the arc-shaped guide wall and the pool wall of the pool body in the second direction, and the reflux pump is located in the gap.

6. The integrated oxidation ditch system according to any one of claims 1 to 5, characterized in that: In the second direction, the reflux pipe and the reflux pump are both arranged close to the pool wall of the pool body, and the second direction is the width direction of the pool body.

7. The integrated oxidation ditch system according to claim 6, characterized in that: It also includes a bridge workbench, the length direction of the bridge workbench is parallel to the second direction, one end of the bridge workbench in the length direction is fixed to the top of the pool wall, and the other end of the bridge workbench is located above the pool body. The reflux pump is installed on the bridge workbench, and the reflux pump is located in the middle of the pool body in the third direction. The third direction is the depth direction of the pool body.

8. The integrated oxidation ditch system according to claim 7, characterized in that: It also includes a hanger, the top end of which is fixed to the bridge workbench, and the reflux pump is installed on the hanger.

9. The integrated oxidation ditch system according to claim 8, characterized in that: The hanger includes a strap and two hanger plates extending in the third direction, the top end of the hanger plate is fixed to the bridge workbench, the two hanger plates are arranged opposite to each other in the second direction, the strap is located between the two hanger plates, and the strap is fixedly connected to the two hanger plates, the reflux pump is located between the two hanger plates, and the reflux pump is fixed on the top of the strap.

10. The integrated oxidation ditch system according to claim 7, characterized in that: It also includes a bracket, which is fixed to the pool wall. In the third direction, the position of the reflux pipe is the same as that of the reflux pump, and the reflux pump is fixed to the bracket.

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