CN217025502U - Integrated sewage treatment device - Google Patents
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- CN217025502U CN217025502U CN202220971390.7U CN202220971390U CN217025502U CN 217025502 U CN217025502 U CN 217025502U CN 202220971390 U CN202220971390 U CN 202220971390U CN 217025502 U CN217025502 U CN 217025502U
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Abstract
The application discloses integral type sewage treatment plant, it can be applicable to the nervous sewage treatment plant in land used, and the different quality of water requirements of nimble reply. The integrated sewage treatment device comprises an improved biological tank and a sedimentation tank. The improved biological pond comprises a pre-anoxic zone, an anaerobic zone, an anoxic zone, an facultative zone and an aerobic zone which are sequentially communicated. The sedimentation tank is adjacent to the improved biological tank and is communicated with the outlet of the aerobic zone. Wherein the facultative zone is provided with a stirrer and an aerator, and the stirrer and the aerator are independently controlled, so that the facultative zone can be switched between an aerobic mode and an anoxic mode: when the aerator is closed and the stirrer is opened, the facultative zone is in an anoxic mode and has the same function as the anoxic zone; when the stirrer is turned off and the aerator is turned on, the facultative zone is in the aerobic mode and has the same function as the aerobic zone.
Description
Technical Field
The application relates to the technical field of water treatment, in particular to an integrated sewage treatment device.
Background
In sewage treatment, a biological pond is usually separately constructed with a sedimentation tank and connected through a pipeline, so that the biological pond is not suitable for sewage treatment plants with tight land. Both the space between structures and the civil engineering investment are wasted to a certain extent. Meanwhile, the biochemical system of the sewage treatment plant is mostly applied to the AAO process, but the water quality concentration of inlet water of the sewage treatment plant often fluctuates greatly along with seasons, so that the trends of low water quality concentration in summer and high water quality concentration in winter are presented, and the partition of the conventional AAO biological pond is fixed, so that the capacity of each partition pond cannot be flexibly adjusted according to the water quality concentration, the treatment capacity of the biological pond is in an optimal state all the year round, and the energy consumption is wasted to a certain extent.
SUMMERY OF THE UTILITY MODEL
The application provides an integral type sewage treatment plant, it can be applicable to the nervous sewage treatment plant in land used, and the different water quality requirements of nimble reply.
The application provides an integrated sewage treatment device, comprising;
the improved biological pond comprises a pre-anoxic zone, an anaerobic zone, an anoxic zone, a facultative zone and an aerobic zone which are sequentially communicated;
the sedimentation tank is adjacent to the improved biological tank and is communicated with the outlet of the aerobic zone;
wherein the facultative zone is equipped with a stirrer and an aerator, and the stirrer and the aerator are independently controlled so that the facultative zone can be switched between an aerobic mode and an anoxic mode:
when the aerator is closed and the stirrer is opened, the facultative zone is in the anoxic mode and has the same function as the anoxic zone;
when the stirrer is turned off and the aerator is turned on, the facultative zone is in the aerobic mode and has the same function as the aerobic zone.
In the embodiment of the application, the integrated sewage treatment device treats sewage based on an AAO (A2O, Anaerobic-aerobic-Oxic) process.
The inventor finds that the biological pond is usually separately constructed with the sedimentation pond and is connected with the sedimentation pond through a pipeline, so that the biological pond is not suitable for a sewage treatment plant with a short land, and the space between the structures and the civil engineering investment are wasted to a certain extent. Secondly, the water quality concentration of inlet water of a sewage treatment plant often fluctuates greatly along with seasons, the trends of low water quality concentration in summer and high water quality concentration in winter are presented, the subareas of a conventional AAO biological pool are fixed, the capacity of each subarea cannot be flexibly adjusted according to the water quality concentration, so that the treatment capacity of the biological pool is not in an optimal state all the year round, and certain waste of energy consumption is caused, therefore, in order to improve the space utilization rate and flexibly meet different water quality requirements, an inventor conducts deep research, designs an integrated sewage treatment device which comprises an improved biological pool and a sedimentation pool which are adjacent to each other, the improved biological pool is adjacent to the sedimentation pool, and compared with the scheme that the improved biological pool and the sedimentation pool are separately constructed and connected through pipelines, the integrated sewage treatment plant can be suitable for the sewage treatment plant with short land; the improved biological pond is provided with a facultative zone, and the facultative zone is provided with a stirrer and an aerator, so that the aerobic mode and the anoxic mode can be switched to operate according to the water quality so as to prolong the retention time of a specific subarea, for example, the aerator can be closed and the stirrer can be opened under the condition that the concentration of TN (total nitrogen) of inlet water is higher, and the improved biological pond can be used as an anoxic zone; the mixer can be closed and the aerator can be opened under the condition that the water quality concentration of inlet water in summer is low or COD (Chemical Oxygen Demand), BOD (biochemical Oxygen Demand) and ammonia nitrogen concentration are high, and the inlet water can be used as an aerobic area and flexibly meet different water quality requirements.
Optionally, in some embodiments, the modified biological pond and the sedimentation pond are the same size in the first direction;
along the second direction, the improvement biological pond with the sedimentation tank sets up side by side, first direction with the second direction is mutually perpendicular.
In the embodiment of the application, the first direction can be the length direction of the improved biological pond and the sedimentation pond, and the second direction can be the width direction of the improved biological pond and the sedimentation pond; because the improved biological tank and the sedimentation tank have the same length and are adjacent in the width direction, the integrated sewage treatment device is suitable for being formed by in-situ modification in the existing CASS or CAST process, namely, the existing building is reasonably utilized, and the construction cost of the integrated sewage treatment device is reduced.
Optionally, in some embodiments, the integrated wastewater treatment plant comprises a first tank body and a second tank body, the first tank body and the second tank body are adjoined in the second direction, and the first tank body and the second tank body have a size ratio of 3:1 in the second direction;
the improved biological tank is arranged in the first tank body, and the sedimentation tank is arranged in the second tank body.
Optionally, in some embodiments, the sedimentation tank has a first end and a second end oppositely disposed along a first direction;
the sedimentation tank is provided with a sedimentation inlet channel which is used for communicating the sedimentation tank with the aerobic zone, and the sedimentation inlet channel is positioned in the center of the sedimentation tank and extends to the second end along the first end so as to divide the sedimentation tank into two areas; the sedimentation water inlet channel is a double-side water inlet channel and a double-side water outlet channel.
Optionally, in some embodiments, the sedimentation tank is further provided with a sedimentation water distribution channel, the sedimentation water distribution channel has two inlets arranged along the second direction, the water outlet of the sedimentation water distribution channel is located at the first end and is communicated with the two inlets, and the water inlet of the sedimentation water distribution channel is communicated with the aerobic zone;
the two opposite sides of the sedimentation water inlet channel in the second direction are respectively communicated with the two areas through sedimentation water inlet holes.
In the embodiment of this application, the play water of improvement biological pond gets into after the sediment inlet channel, gets into the sedimentation tank effectively through the sediment inlet opening of both sides.
Optionally, in some embodiments, the sedimentation tank is further provided with a sedimentation outlet channel and an outlet pipe, and the sedimentation outlet channel is arranged on both sides of the sedimentation inlet channel in the second direction;
the water outlet pipes are arranged at the second end, and the two water outlet pipes are arranged side by side and communicated with the sedimentation water outlet channel.
Optionally, in some embodiments, the sedimentation tank is further provided with a sludge return channel, and two sludge return channels are respectively arranged on two sides of the two areas;
the integrated sewage treatment device further comprises an outer return channel, the edge of the first tank body and the edge of the second tank body extend, and the two sludge return channels are communicated with the pre-anoxic zone.
Optionally, in some embodiments, the first cell body includes a first sub-cell body, a second sub-cell body, and a third sub-cell body sequentially connected along the second direction, the first sub-cell body, the second sub-cell body, and the third sub-cell body are all the same in size in the second direction, and the third sub-cell body is adjacent to the second cell body;
the pre-anoxic zone, the anaerobic zone and the anoxic zone are all arranged in the first tank body and are communicated in sequence; part of the facultative zone is arranged in the first sub-tank body and communicated with the anoxic zone, the other part of the facultative zone is arranged in the second sub-tank body and communicated with the aerobic zone, and the two parts of the facultative zone are communicated with each other; part of the aerobic zone is arranged in the second sub-tank body, and the other part of the aerobic zone is arranged in the third sub-tank body and communicated with the sedimentation tank;
wherein the inlets and outlets of the pre-anoxic zone, the anaerobic zone, the anoxic zone, the facultative zone and the aerobic zone are not on the same side.
In the embodiment of the application, the first tank body comprises three sub tank bodies with the same size, namely the integrated sewage treatment device is composed of four rectangular tank bodies with the same size, and can be suitable for sewage treatment plants with 4 CASS or CAST processes to carry out in-situ modification on biological tanks; wherein, the import and the export in anoxic zone, anaerobic zone, anoxic zone, facultative zone and aerobic zone in advance are not in same one side, and the water yield is business turn over in turn promptly, avoids taking place the condition of short flow for the reaction fully carries out, improves sewage treatment's efficiency.
Optionally, in some embodiments, the third sub-tank body is provided with a partition plate to partition the aerobic zone in the third sub-tank body into a first aerobic zone and a second aerobic zone, the second aerobic zone being in communication with the sedimentation tank;
the improved biological tank further comprises a degassing zone and an internal backflow well, the degassing zone and the internal backflow well are arranged in the second sub-tank body, the degassing zone is communicated with the second aerobic zone and the internal backflow well, and the internal backflow well is communicated with the anoxic zone.
Optionally, in some embodiments, the improved biological pond is configured with a sewage inlet channel, the sewage inlet channel is disposed in the first sub-pond body, and the sewage inlet channel has a plurality of water inlets so as to communicate the pre-anoxic zone, the anaerobic zone and the anoxic zone in a distributed manner.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic view of an integrated wastewater treatment plant according to some embodiments of the present application;
FIG. 2 is a schematic illustration of a portion of a settling tank in some embodiments of the present application.
Icon: 1, water inlet pipe; 2-a water inlet well; 3-a pre-anoxic zone; 4-an anaerobic zone; 5-an anoxic zone; 6-facultative zone; 7-a first aerobic zone; 8-a second aerobic zone; 9-a degassing zone; 10-sewage inlet channel; 11-a sediment distribution channel; 12-a sediment water inlet channel; 13-settling water outlet channel; 14-sludge return channel; 15-external reflux channel; 16-a settling zone scum canal; 17-inner return channel; 18-internal return well; 19-water inlet of pre-anoxic zone; 20-anaerobic zone water inlet; 21-anoxic zone water inlet; 22-water inlet of settling distribution channel; 23-a water outlet of the sedimentation water distribution channel; 24-a precipitation water inlet; 25-precipitating water outlet holes; 26-a scum discharge port of the sedimentation tank inlet water; 27-dross discharge holes; 28-sludge return water outlet; 29-excess sludge discharge hole; 30-water outlet pipe; 31-the precipitation zone.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
The technical solution in the present application will be described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, fig. 1 is a schematic view of an integrated sewage treatment apparatus according to some embodiments of the present disclosure; FIG. 2 is a schematic illustration of a portion of a settling tank in some embodiments of the present application.
Some embodiments of the present application provide an integrated sewage treatment device, which can be suitable for sewage treatment plants with tense land and flexibly meet different water quality requirements.
The integrated sewage treatment device comprises a modified biological tank (marked with A in the figure) and a sedimentation tank (marked with B in the figure). The improved biological pond comprises a pre-anoxic zone 3, an anaerobic zone 4, an anoxic zone 5, an facultative zone 6 and an aerobic zone (see reference numerals 7 and 8 in figure 1) which are communicated in sequence. The sedimentation tank is adjacent to the improved biological tank and is communicated with the outlet of the aerobic zone.
Wherein the facultative zone 6 is equipped with a stirrer and an aerator (not shown in the figure), and the stirrer and the aerator are independently controlled so that the facultative zone 6 can be switched between an aerobic mode and an anoxic mode:
when the aerator is closed and the stirrer is opened, the facultative zone 6 is in an anoxic mode and has the same function as the anoxic zone 5;
when the stirrer is turned off and the aerator is turned on, the facultative zone 6 is in the aerobic mode and has the same function as the aerobic zone.
In the embodiment of the application, the integrated sewage treatment device treats sewage based on an AAO (A2O, Anaerobic-Oxic) process.
The inventor finds that the biological pond is usually independently constructed with the sedimentation pond and is connected with the sedimentation pond through a pipeline, so that the biological pond is not suitable for a sewage treatment plant with a tight land, and the space between the structures and the civil construction investment are wasted to a certain extent. The water quality concentration of inlet water of a sewage treatment plant usually fluctuates greatly along with seasons, the trends of low water quality concentration in summer and high water quality concentration in winter are presented, the partition of a conventional AAO biological tank is fixed, the capacity of each partition tank cannot be flexibly adjusted according to the water quality concentration, so that the treatment capacity of the biological tank is in an optimal state very often, and energy consumption is wasted to a certain extent; the improved biological pond is provided with a facultative zone 6, and the facultative zone 6 is provided with a stirrer and an aerator, so that the aerobic mode and the anoxic mode can be switched to operate according to the water quality so as to prolong the retention time of a specific subarea, for example, the aerator can be closed and the stirrer can be opened under the condition that the concentration of TN (total nitrogen) of inlet water is higher, and the improved biological pond can be used as an anoxic zone 5; under the condition that the water quality concentration of inlet water in summer is low or COD (Chemical Oxygen Demand), BOD (biochemical Oxygen Demand) and ammonia nitrogen concentration are high, the stirrer can be closed, the aerator can be opened, and the inlet water can be used as an aerobic area to flexibly meet different water quality requirements.
According to some embodiments of the present application, the modified biological pond and the sedimentation pond are the same size in the first direction. Along the second direction, improvement biological pond and sedimentation tank set up side by side, and first direction and second direction are perpendicular to each other.
In the embodiment of the application, the first direction can be the length direction of the improved biological pond and the sedimentation pond, and the second direction can be the width direction of the improved biological pond and the sedimentation pond; because the improved biological tank and the sedimentation tank have the same length and are adjacent in the width direction, the integrated sewage treatment device is suitable for being transformed in situ in the existing CASS or CAST process, namely, the existing building is reasonably utilized, and the construction cost of the integrated sewage treatment device is reduced.
According to some embodiments of the present application, the integrated wastewater treatment apparatus includes a first tank body and a second tank body (denoted by d in the figure), the first tank body and the second tank body are adjacent to each other in the second direction, and a size ratio of the first tank body to the second tank body in the second direction is 3: 1. The improved biological tank is arranged in the first tank body, and the sedimentation tank is arranged in the second tank body.
According to some embodiments of the present application, the settling pond has oppositely disposed first and second ends along a first direction. The sedimentation tank is provided with a sedimentation water inlet channel 12 for communicating the sedimentation tank with the aerobic zone, the sedimentation water inlet channel 12 is positioned at the center of the sedimentation tank and extends to the second end along the first end so as to divide the sedimentation tank into two areas (namely a sedimentation zone 31); the sedimentation water inlet channel 12 is a double-side inlet and double-side outlet water inlet channel.
According to some embodiments of the present application, the sedimentation tank is further provided with a sedimentation distribution channel 11, the sedimentation inlet channel 12 has two inlets arranged in the second direction, the outlet of the sedimentation distribution channel 11 (sedimentation distribution channel outlet 23) is located at the first end and communicates with the two inlets, and the inlet of the sedimentation distribution channel 11 (sedimentation distribution channel inlet 22) communicates with the aerobic zone. The opposite sides of the sediment inlet channel 12 in the second direction are in communication with the two regions through sediment inlet openings 24, respectively.
In the embodiment of the present application, the effluent of the improved biological pond enters the sedimentation water inlet channel 12 and then effectively enters the sedimentation pond through the sedimentation water inlet holes 24 on both sides.
According to some embodiments of the present application, the sedimentation tank is further provided with a sedimentation outlet channel 13 and an outlet pipe 30, and the sedimentation inlet channel 12 is provided with the sedimentation outlet channel 13 on both sides in the second direction. The water outlet pipes 30 are arranged at the second end, and the two water outlet pipes 30 are arranged side by side and communicated with the sedimentation water outlet channel.
According to some embodiments of the present application, the sedimentation tank is further provided with sludge return channels 14, and two sludge return channels 14 are respectively provided on both sides of the two areas. The integrated sewage treatment device also comprises an outer return channel 15 which extends along the edges of the first tank body and the second tank body and communicates the two sludge return channels 14 with the pre-anoxic zone 3.
According to some embodiments of the present application, the first cell body includes a first sub-cell body, a second sub-cell body, and a third sub-cell body (the first sub-cell body, the second sub-cell body, and the third sub-cell body are denoted by a, b, and c in fig. 1, and the second cell body is denoted by d in fig. 1) connected in sequence along the second direction, and the first sub-cell body, the second sub-cell body, and the third sub-cell body have the same size in the second direction, and the third sub-cell body is adjacent to the second cell body. The pre-anoxic zone 3, the anaerobic zone 4 and the anoxic zone 5 are arranged in the first tank body and are communicated in sequence; part of the facultative zone 6 is arranged in the first sub-tank body and communicated with the anoxic zone 5, the other part of the facultative zone 6 is arranged in the second sub-tank body and communicated with the aerobic zone, and the two parts of the facultative zone 6 are communicated with each other; part of the aerobic zone is arranged in the second sub-tank body, and the other part of the aerobic zone is arranged in the third sub-tank body and communicated with the sedimentation tank.
Wherein, the inlets and outlets of the pre-anoxic zone 3, the anaerobic zone 4, the anoxic zone 5, the facultative zone 6 and the aerobic zone are not on the same side.
In the embodiment of the application, the first tank body comprises three sub-tank bodies with the same size, namely the integrated sewage treatment device is composed of four rectangular tank bodies with the same size, and the integrated sewage treatment device can be suitable for sewage treatment plants with 4 CASS or CAST processes to carry out in-situ modification on biological tanks; wherein, the inlet and the outlet of the pre-anoxic zone 3, the anaerobic zone 4, the anoxic zone 5, the facultative zone 6 and the aerobic zone are not at the same side, namely, the water quantity alternately enters and exits, thereby avoiding the occurrence of short flow, leading the reaction to be fully carried out and improving the efficiency of sewage treatment.
According to some embodiments of the present application, the third sub-tank body is provided with a partition plate to partition the aerobic zone in the third sub-tank body into a first aerobic zone 7 and a second aerobic zone 8 (wherein the part at the aerobic zone of the second sub-tank body is numbered 7). The second aerobic zone 8 is communicated with the sedimentation tank. The improved biological pool also comprises a degassing zone 9 and an internal reflux well 18, the degassing zone 9 and the internal reflux well 18 are arranged in the second sub-pool body, the degassing zone 9 is communicated with a second aerobic zone 8 and the internal reflux well 18, and the internal reflux well 18 is communicated with the anoxic zone 5.
According to some embodiments of the present application, the improved biological pond is configured with a sewage inlet channel 10, the sewage inlet channel 10 is disposed in the first sub-pond body, and the sewage inlet channel 10 has a plurality of water inlets to communicate the pre-anoxic zone 3, the anaerobic zone 4 and the anoxic zone 5 in a distributed manner.
According to some embodiments of the present application, there is also provided an integrated sewage treatment apparatus, as shown in fig. 1 and 2. The device consists of four rectangular tank bodies with equal length and equal width, the occupied area is saved, and all water flows alternately enter and exit along the oblique opposite angles of the partitions in the arrangement mode of each partition (through partition differentiation areas and the arrangement of the inlets and the outlets of the partitions) in the device, so that short flow is not easy to occur. The direction of flow of the water stream can be seen in fig. 1. The device is particularly suitable for carrying out in-situ modification on the biological pond in a sewage treatment plant with 4 CASS or CAST processes.
The integrated sewage treatment device consists of an improved AAO biological tank (improved biological tank) and a sedimentation tank with water inlet at two sides, water outlet at two sides and water inlet at a rectangular periphery, wherein the improved biological tank and the sedimentation tank have the same tank length and the ratio of tank width of 3: 1. The improved biological tank is divided into a pre-anoxic zone 3, an anaerobic zone 4, an anoxic zone 5, a facultative zone 6 and an aerobic zone in sequence, wherein the facultative zone 6 is provided with a stirrer and an aerator at the same time, and the aerator can be turned off and the stirrer can be turned on under the condition of higher TN concentration of inlet water and can be used as the anoxic zone 5; the mixer can be closed and the aerator can be opened under the condition that the water quality concentration of inlet water in summer is low or the COD, BOD and ammonia nitrogen concentration are high, and the aerator can be used as an aerobic zone and flexibly meet different water quality requirements. The combined sedimentation tank is a sedimentation tank with the middle part being provided with water inlet at two sides and water outlet at two sides and the rectangular periphery being provided with water outlet at the periphery, and the sedimentation water inlet channel 12 and the sedimentation area 31 of the sedimentation tank are both provided with scum discharge ports. Wherein, it needs to be explained that the middle double-side water inlet and double-side water outlet and rectangular periphery water inlet and periphery water outlet sedimentation tank is suitable for the transformation of a rectangular tank with the length-width ratio of less than 4.
Specifically, sewage enters an inlet well 22 through an inlet pipe 11, enters each subarea (a pre-anoxic zone 3, an anaerobic zone 4 and an anoxic zone 5) through each water inlet (shown by 19-21 in the figure, a pre-anoxic zone water inlet 19, an anaerobic zone water inlet 20 and an anoxic zone water inlet 21) in a sewage inlet channel 10 respectively, sequentially passes through the pre-anoxic zone 3, the anaerobic zone 4, the anoxic zone 5 and the facultative zone 6, prolongs the retention time of the sewage in the anoxic zone 5 or the aerobic zone 4 through the specific operation (an aerobic mode or an anoxic mode) of the facultative zone 6, then passes through the aerobic zone (comprising a first aerobic zone 7 and a second aerobic zone 8), enters a degassing zone 9, enters an inner return well 18 through a wall-penetrating return pump, and returns to the anoxic zone 5 along an inner return channel 17, the outlet water of the improved biological tank enters a precipitation inlet channel 12 through a precipitation water distribution channel 11, and enters the sedimentation zone 31 (two separated areas of the sedimentation tank) through the sedimentation water inlet hole 24, and the effluent enters the sedimentation water outlet channel 13 at the middle end and enters the water outlet pipe 30 through the sedimentation water outlet hole 25.
The sludge flows back to the sludge return channel 14 through the sludge return water outlet 28 by the sludge suction pump, the sludge enters the pre-anoxic zone 3 through the outer return channel 15, and the residual sludge is discharged through the residual sludge discharge hole 29.
The surface scum from the settling zone 31 enters the settling zone scum channel 16 and the surface scum from the inlet channel 12 joins the surface scum from the settling zone 31 through the sedimentation tank inlet scum discharge opening 26 and is discharged through the scum discharge opening 27.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An integrated sewage treatment device is characterized by comprising;
the improved biological pond comprises a pre-anoxic zone, an anaerobic zone, an anoxic zone, an facultative zone and an aerobic zone which are sequentially communicated;
the sedimentation tank is adjacent to the improved biological tank and is communicated with the outlet of the aerobic zone;
wherein the facultative zone is provided with a stirrer and an aerator, and the stirrer and the aerator are independently controlled so that the facultative zone can be switched between an aerobic mode and an anoxic mode:
when the aerator is closed and the stirrer is opened, the facultative zone is in the anoxic mode and has the same function as the anoxic zone;
when the stirrer is turned off and the aerator is turned on, the facultative zone is in the aerobic mode and has the same function as the aerobic zone.
2. The integrated sewage treatment apparatus according to claim 1,
the improved biological pond and the sedimentation pond have the same size in the first direction;
along the second direction, the improvement biological pond with the sedimentation tank sets up side by side, first direction with the second direction is perpendicular to each other.
3. The integrated sewage treatment apparatus of claim 2,
the integrated sewage treatment device comprises a first tank body and a second tank body, wherein the first tank body and the second tank body are adjacent in the second direction, and the size ratio of the first tank body to the second tank body in the second direction is 3: 1;
the improved biological tank is arranged in the first tank body, and the sedimentation tank is arranged in the second tank body.
4. The integrated sewage treatment apparatus of claim 3,
the sedimentation tank is provided with a first end and a second end which are oppositely arranged along a first direction;
the sedimentation tank is provided with a sedimentation water inlet channel which is used for communicating the sedimentation tank with the aerobic zone, and the sedimentation water inlet channel is positioned in the center of the sedimentation tank and extends to the second end along the first end so as to divide the sedimentation tank into two areas; the sedimentation water inlet channel is a double-side inlet and double-side outlet water inlet channel.
5. The integrated sewage treatment apparatus of claim 4,
the sedimentation tank is also provided with a sedimentation water distribution channel, the sedimentation water distribution channel is provided with two inlets which are arranged along the second direction, the water outlet of the sedimentation water distribution channel is positioned at the first end and is communicated with the two inlets, and the water inlet of the sedimentation water distribution channel is communicated with the aerobic zone;
the two opposite sides of the sedimentation water inlet channel in the second direction are respectively communicated with the two areas through sedimentation water inlet holes.
6. The integrated sewage treatment apparatus of claim 5,
the sedimentation tank is also provided with a sedimentation water outlet channel and a water outlet pipe, and the sedimentation water outlet channels are arranged on the two sides of the sedimentation water inlet channel in the second direction;
the water outlet pipes are arranged at the second end, and the two water outlet pipes are arranged side by side and communicated with the sedimentation water outlet channel.
7. The integrated sewage treatment apparatus of claim 4,
the sedimentation tank is also provided with sludge return channels, and the two sludge return channels are respectively arranged on two sides of the two areas;
the integrated sewage treatment device further comprises an outer backflow channel, the edge of the first tank body and the edge of the second tank body extend, and the two sludge backflow channels are communicated with the pre-anoxic zone.
8. The integrated sewage treatment apparatus according to any one of claims 3 to 7,
the first tank body comprises a first sub-tank body, a second sub-tank body and a third sub-tank body which are sequentially connected along the second direction, the sizes of the first sub-tank body, the second sub-tank body and the third sub-tank body in the second direction are the same, and the third sub-tank body is adjacent to the second tank body;
the pre-anoxic zone, the anaerobic zone and the anoxic zone are all arranged in the first tank body and are communicated in sequence; part of the facultative zone is arranged in the first sub-tank body and communicated with the anoxic zone, the other part of the facultative zone is arranged in the second sub-tank body and communicated with the aerobic zone, and the two parts of the facultative zone are communicated with each other; part of the aerobic zone is arranged in the second sub-tank body, and the other part of the aerobic zone is arranged in the third sub-tank body and communicated with the sedimentation tank;
wherein the inlets and outlets of the pre-anoxic zone, the anaerobic zone, the anoxic zone, the facultative zone and the aerobic zone are not on the same side.
9. The integrated sewage treatment apparatus of claim 8,
the third sub-tank body is provided with a partition plate to partition the aerobic zone in the third sub-tank body into a first aerobic zone and a second aerobic zone, and the second aerobic zone is communicated with the sedimentation tank;
the improved biological tank further comprises a degassing zone and an internal backflow well, the degassing zone and the internal backflow well are arranged in the second sub-tank body, the degassing zone is communicated with the second aerobic zone and the internal backflow well, and the internal backflow well is communicated with the anoxic zone.
10. The integrated sewage treatment apparatus of claim 8,
the improved biological pond is provided with a sewage inlet channel, the sewage inlet channel is arranged in the first sub-pond body, and the sewage inlet channel is provided with a plurality of water inlets so as to be communicated with the pre-anoxic zone, the anaerobic zone and the anoxic zone in a distributed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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