Sewage treatment device and sewage treatment system

Abstract

The utility model relates to a sewage treatment device and a sewage treatment system. The sewage treatment device comprises a shell provided with a cavity, the cavity comprises an aerobic cavity and an anoxic cavity which are communicated, and the aerobic cavity is located on the side, away from the gravity direction, of the anoxic cavity; the power assembly is located outside the shell. Therefore, according to the sewage treatment device and the sewage treatment system provided by the invention, the maintenance difficulty of the sewage treatment device can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, in particular to a sewage treatment device and a sewage treatment system. BACKGROUND

[0002] Rural domestic sewage treatment is to remove, degrade and harmlessly treat harmful substances and environment-polluting components in domestic sewage. The rural domestic sewage treatment should focus on selecting mature and reliable technologies suitable for rural characteristics and actual sewage treatment.

[0003] In the related art, the sewage treatment device comprises a shell, an aerobic chamber, an anaerobic chamber, a sedimentation chamber and an equipment chamber are arranged in the shell, the aerobic chamber and the anaerobic chamber are communicated, the aerobic chamber and the sedimentation chamber are communicated, and a control system, a fan and a dosing device are arranged in the equipment chamber.

[0004] However, the maintenance of the sewage treatment device is difficult. CONTENT OF THE UTILITY MODEL

[0005] Therefore, it is necessary to provide a sewage treatment device and a sewage treatment system, which can reduce the maintenance difficulty of the sewage treatment device.

[0006] In a first aspect, an embodiment of the present application provides a sewage treatment device, comprising:

[0007] The shell has a cavity, the cavity comprises an aerobic cavity and an anoxic cavity which are communicated, and the aerobic cavity is located on a side of the anoxic cavity which is away from the gravity direction; and a power assembly is located outside the shell.

[0008] The sewage treatment device provided by the embodiment of the present application has the advantages that the power assembly is arranged outside the shell, so that the power assembly is movable, the position of the power assembly relative to the shell is flexible, and the migration, installation, maintenance and updating of the power assembly are facilitated, thereby reducing the maintenance difficulty of the sewage treatment device, and in addition, the volume of the sewage treatment device can be reduced, the available space of the aerobic cavity and the anoxic cavity in the sewage treatment device is increased, and the size of the aerobic cavity and the anoxic cavity can be adjusted according to the needs, so that the sewage treatment device can meet the sewage treatment scale requirements of most rural decentralized sewage treatment sites.

[0009] In one of the embodiments, the cavity comprises an aeration cavity, the aeration cavity is arranged between the aerobic cavity and the anoxic cavity, and is communicated with the aerobic cavity and the anoxic cavity;

[0010] The power assembly comprises a fan, the sewage treatment device comprises an air inlet pipe and an aeration assembly, the aeration assembly is arranged in the aeration cavity, one end of the air inlet pipe is communicated with the aeration assembly, the other end of the air inlet pipe is located on a side of the shell which is away from the gravity direction, and is communicated with an air outlet of the fan.

[0011] In one of the embodiments, the shell of the aerobic cavity is provided with a backflow port and a liquid inlet port, the backflow port is arranged on the side of the liquid inlet port away from the direction of gravity;

[0012] The power assembly comprises a backflow pump, the sewage treatment device comprises a backflow pipe arranged outside the shell, the backflow port and the liquid inlet port are communicated through the backflow pipe, and the backflow pump is arranged on the backflow pipe.

[0013] In one of the embodiments, the shell of the aerobic cavity is provided with a liquid inlet port, the sewage treatment device comprises a liquid inlet pipe arranged in the cavity, one end of the liquid inlet pipe is communicated with the liquid inlet port, and the other end of the liquid inlet pipe is arranged in the anoxic cavity and at the bottom of the anoxic cavity.

[0014] In one of the embodiments, the liquid inlet pipe comprises a first sub-liquid inlet pipe and a second sub-liquid inlet pipe communicated with each other, the first sub-liquid inlet pipe is communicated with the liquid inlet port, and the second sub-liquid inlet pipe is arranged in the anoxic cavity and at the bottom of the anoxic cavity.

[0015] The second sub-liquid inlet pipe is annular, the second sub-liquid inlet pipe comprises a plurality of extension sections connected end to end in sequence, a three-way pipe is arranged between each adjacent two extension sections and communicated through the three-way pipe.

[0016] The three-way pipe comprises a first flow channel, a second flow channel and a third flow channel, the adjacent two extension sections comprise a first extension section and a second extension section, the first extension section is communicated with the first flow channel of the three-way pipe, the second extension section is communicated with the second flow channel of the three-way pipe, the third flow channel of the three-way pipe extends towards the direction of the shell top wall of the shell, the third flow channel of the three-way pipe comprises a first end away from the second sub-liquid inlet pipe and a second end close to the second sub-liquid inlet pipe, and the first end is arranged obliquely relative to the second end and towards the direction close to the first extension section.

[0017] In one of the embodiments, the power assembly comprises a lifting pump, the sewage treatment device comprises a lifting pipe arranged outside the shell, one end of the lifting pipe is communicated with the liquid inlet port, the other end of the lifting pipe is used to be communicated with the pretreatment device, and the lifting pump is arranged on the lifting pipe.

[0018] In one of the embodiments, the side wall of the shell of the anoxic cavity is provided with a first inspection port at the bottom, the first inspection port is communicated with the anoxic cavity.

[0019] And / or, the shell top wall of the shell is provided with a second inspection port, the second inspection port is communicated with the cavity.

[0020] And / or, the sewage treatment device comprises a suspended filler, the suspended filler is arranged in the aerobic cavity and movably arranged relative to the shell.

[0021] And / or, the sewage treatment device comprises a combined filler, the combined filler is arranged in the anoxic cavity and connected with the shell.

[0022] And / or, the edge of the shell top wall of the shell is provided with a plurality of air holes arranged along the circumference of the shell, the air holes being in communication with the cavity.

[0023] In one of the embodiments, the cavity comprises a liquid outlet cavity, the liquid outlet cavity being arranged on the side of the aerobic cavity away from the direction of gravity and being in communication with the aerobic cavity.

[0024] The liquid outlet cavity comprises a first sub-liquid outlet cavity and a second sub-liquid outlet cavity in communication, the second sub-liquid outlet cavity being arranged on the side of the first sub-liquid outlet cavity away from the direction of gravity.

[0025] The sewage treatment device comprises an annular plate body, the plate body being arranged in the first sub-liquid outlet cavity and separating the first sub-liquid outlet cavity into a first part and a second part, the second part being annularly arranged outside the periphery of the first part, the first part being in communication with the aerobic cavity, and the first part and the second part both being in communication with the second sub-liquid outlet cavity.

[0026] The shell of the second part is provided with a liquid outlet, the liquid outlet being in communication with the second part.

[0027] In one of the embodiments, the plate body comprises a first sub-plate body close to the aerobic cavity and a second sub-plate body away from the aerobic cavity, the first sub-plate body and the second sub-plate body being connected.

[0028] The end of the first sub-plate body away from the aerobic cavity is arranged to be inclined towards the center of the liquid outlet cavity relative to the end close to the aerobic cavity.

[0029] And / or, the direction from the end of the second sub-plate body away from the aerobic cavity to the end close to the aerobic cavity is parallel to the direction of gravity.

[0030] And / or, the distance between the plate body and the aerobic cavity along the direction of gravity is a first distance, the plate body comprises a third end close to the liquid outlet and a fourth end away from the liquid outlet, and the first distance gradually decreases along the direction from the fourth end to the third end.

[0031] In a first aspect, the embodiments of the present application provide a sewage treatment system comprising the sewage treatment device in the first aspect.

[0032] The sewage treatment system provided by the embodiments of the present application comprises the sewage treatment device, the power assembly is arranged outside the shell, so that the power assembly is movable, the position of the power assembly relative to the shell is relatively flexible, and the migration, installation and maintenance and update of the power assembly are also facilitated, so that the maintenance difficulty of the sewage treatment device can be reduced, in addition, the volume of the sewage treatment device can be reduced, the available space of the aerobic cavity and the anoxic cavity in the sewage treatment device is larger, and the size of the aerobic cavity and the anoxic cavity can be adjusted as needed, so that the sewage treatment device can meet the sewage treatment scale demand of most rural decentralized sewage treatment sites. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A structural schematic diagram of a sewage treatment device provided by an embodiment of the present application.

[0034] Figure 2 A partial structural schematic diagram of the sewage treatment device. Figure 1

[0035] Legend of reference signs:

[0036] 10, sewage treatment device; 101, shell; 101a, cavity; 110, liquid outlet cavity; 111, first sub-liquid outlet cavity; 1111, first part; 1112, second part; 112, second sub-liquid outlet cavity; 120, aerobic cavity; 130, aeration cavity; 140, anoxic cavity; 161, first access hole; 162, second access hole; 163, liquid outlet; 164, backflow port; 165, liquid inlet; 166, exhaust port; 167, air hole; 170, liquid inlet pipe; 171, first sub-liquid inlet pipe; 172, second sub-liquid inlet pipe; 181, suspended filler; 182, combined filler; 183, air inlet pipe; 184, aeration assembly; 185, partition; 190, plate body; 191, first sub-plate body; 192, second sub-plate body. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent and understandable, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] ​In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, if there are the terms "a plurality of", the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0040] In the present application, unless otherwise explicitly specified and limited, if there are terms "installation", "connection", "connection", "fixation" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on" or "below" the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If there is, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of illustration, and do not represent the only implementation.

[0043] In the related art, the sewage treatment device includes a shell, an aerobic chamber, an anaerobic chamber, a sedimentation chamber and a device chamber are arranged in the shell, the aerobic chamber and the anaerobic chamber are communicated, the aerobic chamber and the sedimentation chamber are communicated, and the device chamber is provided with a control system, a fan and a dosing device.

[0044] However, since the equipment chamber is arranged in the shell, it is difficult to maintain the control system, the fan and the dosing device in the equipment chamber, thereby making it difficult to maintain the sewage treatment device.

[0045] To solve the above problems, the embodiments of the present application provide a sewage treatment device and a sewage treatment system, which can reduce the difficulty of maintaining the sewage treatment device.

[0046] The following will be described in combination with Figures 1-2 The sewage treatment device 10 and the sewage treatment system provided by the embodiments of the present application will be described.

[0047] The embodiments of the present application provide a sewage treatment device 10, which can be used for treating sewage. For example, the sewage treatment device 10 can be applied to a rural decentralized sewage treatment site.

[0048] For example, referring to Figure 1 , the sewage treatment device 10 can include a shell 101, which can protect the structural members arranged therein. The shell 101 has a cavity 101a, which can include an anoxic cavity 140 and an oxic cavity 120 in communication, and the oxic cavity 120 is located on the top side (i.e., the side away from the direction of gravity) of the anoxic cavity 140. The sewage rises to the oxic cavity 120 after passing through the anoxic cavity 140. The sewage treatment device 10 can use the anoxic-oxic process (AO) for sewage treatment.

[0049] In some embodiments, referring to Figure 1 , the sewage treatment device 10 includes a suspended filler 181 arranged in the oxic cavity 120. In the oxic cavity 120, the easily biodegradable organic matter in the sewage is degraded by the oxic microorganisms attached to the suspended filler 181. After the sewage treatment device 10 completes the degradation treatment of the sewage in the oxic cavity 120, the sewage is discharged to a sedimentation tank of the rural decentralized sewage treatment site through the liquid outlet 163 for mud-water separation, and finally, after being treated by disinfection facilities, it is discharged up to standard. In this way, the sewage treatment device 10 can be used in cooperation with the original sedimentation tank of the site, can meet the needs of upgrading and reconstruction of the existing rural decentralized sewage treatment site, fits the characteristics of the reconstruction of the rural decentralized sewage treatment site, and replaces the core treatment unit of the sewage treatment device 10 while retaining the existing facilities to the maximum extent. In addition, the sewage treatment device 10 does not need to be provided with a sedimentation tank, which can simplify the structure of the sewage treatment device 10, be conducive to reducing the size of the sewage treatment device 10, make the settable space of the oxic cavity 120 and the anoxic cavity 140 in the sewage treatment device 10 larger, be conducive to adjusting the size of the oxic cavity 120 and the anoxic cavity 140 as needed, and make the sewage treatment device 10 meet the sewage treatment scale demand of most rural decentralized sewage treatment sites.

[0050] For example, the suspended filler 181 can refer to a filler in a suspended and fluidized state in the water body being treated. The suspended filler 181 is movably arranged relative to the shell 101. Due to the high oxygen transfer efficiency required by the aerobic cavity 120, the fluidity of the suspended filler 181 helps to improve the utilization efficiency of oxygen, and the suspended filler 181 can move freely with the water flow, increasing the contact area of microorganisms and sewage, which is beneficial to the degradation of organic matter by aerobic microorganisms. The suspended filler 181 can be adjusted and replaced according to the water quality.

[0051] In some embodiments, referring to Figure 1 The sewage treatment device 10 includes a combined filler 182 arranged in the anoxic cavity 140. In the anoxic cavity 140, microorganisms attach to the combined filler 182 to grow and form a biological community, which constitutes a sewage purification biofilm. When the sewage flows through the combined filler 182, the organic matter in the water is degraded by the microorganisms attached to the combined filler 182. The sewage rises to the aerobic cavity 120 after passing through the anoxic cavity 140.

[0052] For example, the anoxic cavity 140 generally does not require strong water flow agitation, and the fixed characteristics of the combined filler 182 are more suitable. Therefore, the combined filler 182 can be connected to the shell 101. For example, the combined filler 182 can be fixed (e.g., tied and fastened) on a support arranged in the anoxic cavity 140 to fix the combined filler 182. The combined filler 182 can be adjusted and replaced according to the water quality.

[0053] For example, the sewage treatment device 10 includes a power assembly (not shown in Figure 1 The power assembly can be located outside the shell 101, and the power assembly is connected to the shell 101. The power assembly can be an integrated power assembly. The power assembly can be directly connected to the shell 101. Alternatively, the power assembly can be indirectly connected through other structural members, for example, the power assembly can be connected to the shell 101 through a pipeline. Since the length of the pipeline can be adjusted and can be bent, by arranging the power assembly outside the shell 101, the power assembly is movable, and the position of the power assembly relative to the shell 101 is flexible. This also facilitates the migration, installation, maintenance, and updating of the power assembly, thereby reducing the maintenance difficulty of the sewage treatment device 10. In addition, this can be beneficial to reducing the size of the sewage treatment device 10, increasing the available space for the aerobic cavity 120 and the anoxic cavity 140 in the sewage treatment device 10, and adjusting the size of the aerobic cavity 120 and the anoxic cavity 140 as needed, so that the sewage treatment device 10 can meet the sewage treatment scale requirements of most rural decentralized sewage treatment sites.

[0054] In some embodiments, referring to Figure 1The cavity 101a includes an aeration chamber 130, which is located between the aerobic chamber 120 and the anoxic chamber 140, and is connected to both chambers. An aeration assembly 184 is installed in the aeration chamber 130, which increases the dissolved oxygen in the aerobic chamber 120. Wastewater passes from the anoxic chamber 140 through the aeration chamber 130 and then enters the aerobic chamber 120.

[0055] In some embodiments, see Figure 1 The power components include the wind turbine ( Figure 1 (Not shown in the image) The wastewater treatment device 10 includes an air inlet pipe 183. One end of the air inlet pipe 183 is connected to the aeration assembly 184, and the other end of the air inlet pipe 183 is located on the top side of the housing 101. The other end of the air inlet pipe 183 is connected to the air outlet of the blower, and the blower delivers air to the aeration assembly 184 through the air inlet pipe 183. Since the other end of the air inlet pipe 183 is located on the top side of the housing 101, it is convenient to inspect and maintain the other end of the air inlet pipe 183.

[0056] In some embodiments, see Figure 1 The shell 101 of the aerobic chamber 120 is provided with a return port 164 and an inlet port 165. The return port 164 is located on the top side of the inlet port 165, which facilitates the transfer of wastewater in the aerobic chamber 120 through the return port 164 under the action of gravity to the [see section] Figure 1 This reduces the energy consumption required for recirculation. Wastewater in the aerobic chamber 120 is internally recirculated through the recirculation port 164 and the inlet port 165, which can improve the degradation efficiency of wastewater.

[0057] In some embodiments, the power component includes a return pump, and the wastewater treatment device 10 includes a return pipe located outside the housing 101. This facilitates maintenance and replacement of the return pipe and also helps to reduce the size of the wastewater treatment device 10, increasing the available space for the aerobic chamber 120 and the anoxic chamber 140. This allows for adjustment of the size of the aerobic chamber 120 and the anoxic chamber 140 as needed, enabling the wastewater treatment device 10 to meet the wastewater treatment scale requirements of most rural decentralized wastewater treatment stations. The return port 164 and the inlet 165 are connected via the return pipe, and the return pump is mounted on the return pipe. The return pump provides return power to the wastewater in the aerobic chamber 120, driving the wastewater in the aerobic chamber 120 to return to the inlet 165.

[0058] In some embodiments, see Figure 1The sewage treatment device 10 comprises a liquid inlet pipe 170 arranged in the cavity 101a, one end of the liquid inlet pipe 170 is communicated with the liquid inlet 165, and the other end of the liquid inlet pipe 170 is arranged in the anoxic cavity 140 and at the bottom of the anoxic cavity 140. The sewage is sequentially transported to the bottom of the anoxic cavity 140 through the liquid inlet 165 and the liquid inlet pipe 170.

[0059] For example, referring to Figure 1 The liquid inlet pipe 170 comprises a first sub-liquid inlet pipe 171 and a second sub-liquid inlet pipe 172 communicated with each other, the first sub-liquid inlet pipe 171 is communicated with the liquid inlet 165, and the first sub-liquid inlet pipe 171 extends from the aerobic cavity 120 into the anoxic cavity 140, and the second sub-liquid inlet pipe 172 is arranged in the anoxic cavity 140 and at the bottom of the anoxic cavity 140. The sewage is sequentially transported to the bottom of the anoxic cavity 140 through the liquid inlet 165, the first sub-liquid inlet pipe 171 and the second sub-liquid inlet pipe 172.

[0060] For example, the first sub-liquid inlet pipe 171 can extend along the direction of gravity, so that the first sub-liquid inlet pipe 171 has a relatively short extension length and a simple structure.

[0061] For example, the second sub-liquid inlet pipe 172 is annular, and comprises a plurality of extension sections connected end to end in sequence, and a three-way pipe is arranged between each adjacent two extension sections and communicates the adjacent two extension sections. The three-way pipe comprises a first flow channel, a second flow channel and a third flow channel, i.e. three flow channels of the three-way pipe. The adjacent two extension sections comprise a first extension section and a second extension section, the first extension section is communicated with the first flow channel of the three-way pipe, the second extension section is communicated with the second flow channel of the three-way pipe, and the third flow channel of the three-way pipe extends towards the direction of the shell top wall of the shell 101, so that the sewage entering the second sub-liquid inlet pipe 172 from the liquid inlet 165 is sprayed out through the third flow channel of the three-way pipe towards the direction of the shell top wall of the shell 101, i.e. upwards. The extension direction of the third flow channel of the three-way pipe can be obliquely intersected with the direction of gravity, for example, the third flow channel of the three-way pipe comprises a first end (i.e. the upper end of the third flow channel) away from the second sub-liquid inlet pipe 172 and a second end (i.e. the lower end of the third flow channel) close to the second sub-liquid inlet pipe 172, and the first end is obliquely arranged relative to the second end towards the direction close to the first extension section, so that the sewage is obliquely sprayed upwards through the third flow channels of the plurality of three-way pipes, and the sewage sprayed out of the third flow channels of the plurality of three-way pipes can form a circulating flow in the anoxic cavity 140, so that the sewage in the anoxic cavity 140 is mixed more uniformly, which is beneficial to improve the sewage treatment efficiency of the combined filler 182.

[0062] In some embodiments, the power assembly comprises a lifting pump, and the sewage treatment device 10 comprises a lifting pipe arranged outside the shell 101, facilitating maintenance and replacement of the lifting pipe, and also facilitating reduction of the volume of the sewage treatment device 10, so that the available space of the aerobic cavity 120 and the anoxic cavity 140 in the sewage treatment device 10 is increased, and the size of the aerobic cavity 120 and the anoxic cavity 140 can be adjusted as needed, so that the sewage treatment device 10 can meet the sewage treatment scale requirement of most rural decentralized sewage treatment sites. One end of the lifting pipe is in communication with the liquid inlet 165, and the other end of the lifting pipe is used to communicate with the pretreatment device. The liquid outlet 163 is communicated with the pretreatment device through the lifting pipe, and the lifting pump is arranged on the lifting pipe. The sewage in the pretreatment device is powered by the lifting pump to drive the sewage in the pretreatment device to enter the pretreatment device, the lifting pipe and the liquid inlet 165, and then enter the sewage treatment device 10. The pretreatment device can be the original facility of the site, and the core processing unit of the sewage treatment device 10 can be replaced in the case of retaining the existing facility to the maximum extent. In addition, the pretreatment device does not need to be arranged in the sewage treatment device 10, which can simplify the structure of the sewage treatment device 10 and facilitate reduction of the volume of the sewage treatment device 10.

[0063] For example, the lifting pump can also be integrated on the power assembly, and the original lifting pump of the site is used, so as to facilitate cost saving.

[0064] For example, the pretreatment device can comprise a grid channel and a regulating tank, and the regulating tank is communicated with the anoxic cavity 140 through the lifting pump. The domestic sewage of the rural decentralized sewage treatment site flows into the regulating tank through the original grid channel after filtration, and the sewage in the regulating tank is pumped into the anoxic cavity 140 through the lifting pump.

[0065] In some embodiments, referring to Figure 1The side wall bottom of the shell 101 of the anoxic cavity 140 is provided with a first access hole 161, and the first access hole 161 is in communication with the anoxic cavity 140. The shell top wall of the shell 101 is provided with a second access hole 162, and the second access hole 162 is in communication with the cavity 101a. At least one of the first access hole 161 and the second access hole 162 can be provided. When the first access hole 161 and the second access hole 162 are provided at the same time, the sewage treatment device 10 is more simple and convenient to overhaul. Since the second access hole 162 is provided on the shell top wall of the shell 101, the use and observation of the second access hole 162 can be facilitated, and the air inlet end of the air inlet pipe 183 can be arranged close to the second access hole 162, which can facilitate the observation of the air inlet end of the air inlet pipe 183 during the overhaul. At the same time, the sewage treatment device 10 can be applied to a semi-buried scene through the cooperation of the upper and lower access holes, for example, after the first access hole 161 provided at the bottom of the shell 101 is closed, the second access hole 162 can still be used for overhaul, that is, after the first access hole 161 is simply modified, the corresponding form can be used as needed, so that it can meet the temporary overhead and permanent semi-buried working conditions during the modification of the rural decentralized sewage treatment station, thereby reducing the storage and waste of equipment, saving costs, saving land, and improving the treatment capacity. In the permanent semi-buried working condition of the sewage treatment device 10, the equipment can be placed in the existing equipment room of the rural decentralized sewage treatment station, which is easier to manage uniformly.

[0066] For example, the second access hole 162 is arranged at one end of the shell top wall of the shell 101 close to the liquid outlet 163, so as to facilitate the observation of the liquid outlet of the sewage treatment device 10 during the overhaul.

[0067] In some embodiments, referring to Figure 1 The edge of the shell top wall of the shell 101 is provided with a plurality of ventilation holes 167 arranged at intervals along the circumference of the shell 101, and the ventilation holes 167 are in communication with the cavity 101a. The cavity 101a is in communication with the environment through the ventilation holes 167, so that the pressure of the cavity 101a is consistent with the environment.

[0068] In some embodiments, referring to Figure 1 The cavity 101a includes a liquid outlet cavity 110, and the liquid outlet cavity 110 is arranged at the top side of the aerobic cavity 120 and in communication with the aerobic cavity 120. The sewage rises to the liquid outlet cavity 110 after passing through the aerobic cavity 120, and is discharged from the sewage treatment device 10 through the liquid outlet 163 at the liquid outlet cavity 110.

[0069] For example, referring to Figure 2The liquid outlet cavity 110 includes a first sub-liquid outlet cavity 111 and a second sub-liquid outlet cavity 112 which are communicated, and the second sub-liquid outlet cavity 112 is arranged on the top side of the first sub-liquid outlet cavity 111. The sewage treatment device 10 includes an annular plate body 190 which is arranged in the first sub-liquid outlet cavity 111, and the plate body 190 divides the first sub-liquid outlet cavity 111 into a first part 1111 and a second part 1112, the second part 1112 is annularly arranged at the outer periphery of the first part 1111, the first part 1111 is communicated with the aerobic cavity 120, the first part 1111 is separated from the aerobic cavity 120, the first part 1111 and the second part 1112 are both communicated with the second sub-liquid outlet cavity 112, and the first part 1111 and the second part 1112 are communicated through the second sub-liquid outlet cavity 112. The shell 101 of the second part 1112 is provided with a liquid outlet 163 which is communicated with the second part 1112. In this way, the liquid outlet 163 is not directly communicated with the first part 1111, the sewage in the first part 1111 overflows to the second part 1112 through the second sub-liquid outlet cavity 112, which is beneficial to reduce the dead water (the dead water is the sewage which is accumulated in the liquid outlet cavity 110 and cannot be discharged) in the liquid outlet cavity 110.

[0070] In some embodiments, referring to Figure 2 The plate body 190 includes a first sub-plate body 191 close to the aerobic cavity 120 and a second sub-plate body 192 away from the aerobic cavity 120, and the first sub-plate body 191 and the second sub-plate body 192 are connected. The first sub-plate body 191 can be arranged obliquely, and one end of the first sub-plate body 191 away from the aerobic cavity 120 is arranged obliquely relative to one end close to the aerobic cavity 120 towards the direction close to the center of the liquid outlet cavity 110, so that the first sub-plate body 191 can play a role of guiding the flow of sewage and can reduce the dead water in the first part 1111.

[0071] In some embodiments, referring to Figure 2 The direction from one end of the second sub-plate body 192 away from the aerobic cavity 120 to one end close to the aerobic cavity 120 is parallel to the direction of gravity, that is, the second sub-plate body 192 can extend along the direction of gravity (vertical direction), the second sub-plate body 192 can make the sewage in the first part 1111 overflow to the second part 1112 uniformly, so that the water outlet of the sewage treatment device 10 is uniform, which is beneficial to fully utilize the space of the sewage treatment device 10, avoid one-sided water outlet and sewage unable to be discharged on the other side, thereby reducing the dead water in the first part 1111 and improving the effect of the sewage treatment device 10.

[0072] For example, the first sub-plate body 191 and the second sub-plate body 192 can both be annular.

[0073] In some embodiments, the plate body 190 is at a first distance from the aerobic cavity 120 along the direction of gravity, the plate body 190 includes a third end (the left end of the plate body 190 in Figure 2 ) close to the liquid outlet 163 and a fourth end (the right end of the plate body 190 in Figure 2 ) away from the liquid outlet 163, and the first distance gradually decreases along the direction from the fourth end to the third end. In other words, the depth of the second part 1112 along the direction of gravity gradually increases along the direction from the fourth end to the third end, so that the closer the second part 1112 is to the liquid outlet 163, the lower the cavity bottom wall of the second part 1112, so that the sewage in the second part 1112 is easy to flow along the direction from the fourth end to the third end under the action of gravity, facilitating the discharge of the sewage from the liquid outlet 163, and preventing the fourth end from being stacked with sewage and unable to be discharged.

[0074] In some embodiments, the shell 101 of the anoxic cavity 140 is provided with a discharge outlet 166, the discharge outlet 166 is used for emptying the anoxic cavity 140, the discharge outlet 166 can be used for discharging sludge in the anoxic cavity 140, and the discharge outlet 166 is in communication with the sludge pool.

[0075] In some embodiments, the power assembly further includes a control member, which can be used to control the operation of the fan, the backflow pump, the lifting pump and the like in the power assembly.

[0076] For example, as shown in Figure 1 , adjacent two of the anoxic cavity 140, the aeration cavity 130, the aerobic cavity 120 and the liquid outlet cavity 110 can be provided with a partition plate 185, the partition plate 185 is used to define the range of the cavity, and can also be used to support the structural member inside the cavity, and the partition plate 185 has a plurality of through holes to communicate the adjacent two cavities.

[0077] In summary, the sewage treatment device 10 provided by the embodiments of the present application adopts the design of upper and lower layered partitioning, has a compact structure, high processing efficiency, simple management, strong durability, and can provide an effective solution for upgrading and reconstruction of rural decentralized sewage treatment sites, and can significantly improve the processing capacity and processing effect of the rural decentralized sewage treatment site, improve the rural water environment, improve the quality of life of rural residents, and protect the ecological environment. As an integrated sewage treatment device 10 for the reconstruction of the rural decentralized sewage treatment site, it can meet the requirements of a larger sewage treatment scale within an economic size range.

[0078] For example, as shown in Figure 1 , the dashed line A in represents the liquid level of the sewage.

[0079] The sewage treatment system provided by the embodiments of the present application is described below.

[0080] The sewage treatment system provided by the embodiments of the present application includes the sewage treatment device 10 described above.

[0081] In some embodiments, the sewage treatment system can comprise a sedimentation tank. The sedimentation tank is in communication with the liquid outlet 163 of the sewage treatment device 10.

[0082] In some embodiments, the sewage treatment system can comprise a pretreatment device. The pretreatment device is in communication with the liquid inlet 165 of the sewage treatment device 10.

[0083] Any combination of the above-described technical features of the embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist in contradiction, they should be considered as falling within the scope of the present disclosure.

[0084] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A wastewater treatment device, characterized in that, include: The shell has a cavity, the cavity including a connected aerobic cavity and an anoxic cavity, the anoxic cavity being located on the side of the aerobic cavity facing the direction of gravity; The power unit is located outside the housing; The cavity includes an aeration chamber, which is disposed between the aerobic chamber and the anoxic chamber and is in communication with the aerobic chamber and the anoxic chamber; The power unit includes a blower, and the sewage treatment device includes an air inlet pipe and an aeration component. The aeration component is disposed in the aeration chamber. One end of the air inlet pipe is connected to the aeration component, and the other end of the air inlet pipe is located on the side of the housing opposite to the direction of gravity and is connected to the air outlet of the blower.

2. The wastewater treatment device according to claim 1, characterized in that, The aerobic chamber is provided with a reflux port and a liquid inlet on its shell, and the reflux port is located on the side of the liquid inlet away from the direction of gravity. The power assembly includes a reflux pump, the wastewater treatment device includes a reflux pipe, the reflux pipe is disposed outside the housing, the reflux port and the liquid inlet are connected through the reflux pipe, and the reflux pump is disposed on the reflux pipe.

3. The wastewater treatment device according to claim 1, characterized in that, The aerobic chamber has an inlet on its shell. The wastewater treatment device includes an inlet pipe, which is disposed in the chamber. One end of the inlet pipe is connected to the inlet, and the other end of the inlet pipe is disposed in the anoxic chamber and at the bottom of the anoxic chamber.

4. The wastewater treatment device according to claim 3, characterized in that, The inlet pipe includes a first sub-inlet pipe and a second sub-inlet pipe that are connected. The first sub-inlet pipe is connected to the inlet port, and the second sub-inlet pipe is disposed in the anoxic chamber and at the bottom of the anoxic chamber. The second sub-inlet pipe is annular and includes multiple extension sections connected end to end in sequence. A three-way pipe is provided between each two adjacent extension sections and they are connected through the three-way pipe. The three-way pipe includes a first flow channel, a second flow channel, and a third flow channel. Two adjacent extension sections include a first extension section and a second extension section. The first extension section is connected to the first flow channel of the three-way pipe, and the second extension section is connected to the second flow channel of the three-way pipe. The third flow channel of the three-way pipe extends toward the top wall of the housing. The third flow channel of the three-way pipe includes a first end away from the second sub-inlet pipe and a second end close to the second sub-inlet pipe. The first end is inclined relative to the second end toward the first extension section.

5. The wastewater treatment device according to claim 3, characterized in that, The power assembly includes a booster pump, and the wastewater treatment device includes a booster pipe. The booster pipe is disposed outside the housing, with one end of the booster pipe connected to the liquid inlet and the other end of the booster pipe connected to the pretreatment device. The booster pump is disposed on the booster pipe.

6. The wastewater treatment device according to any one of claims 1-5, characterized in that, The bottom of the side wall of the shell of the anoxic chamber is provided with a first inspection port, which is connected to the anoxic chamber. And / or, a second inspection port is provided on the top wall of the housing, and the second inspection port communicates with the cavity; And / or, the wastewater treatment device includes suspended packing material disposed in the aerobic chamber and movable relative to the shell; And / or, the wastewater treatment device includes a combined packing material disposed in the anoxic chamber and connected to the shell; And / or, the edge of the top wall of the housing is provided with a plurality of vent holes arranged at intervals along the circumference of the housing, and the vent holes are in communication with the cavity.

7. The wastewater treatment device according to any one of claims 1-5, characterized in that, The cavity includes a liquid outlet cavity, which is located on the side of the aerobic cavity away from the direction of gravity and is connected to the aerobic cavity. The liquid outlet chamber includes a first sub-liquid outlet chamber and a second sub-liquid outlet chamber that are connected to each other, and the second sub-liquid outlet chamber is located on the side of the first sub-liquid outlet chamber that is away from the direction of gravity. The wastewater treatment device includes an annular plate body, which is disposed in the first sub-outlet chamber and divides the first sub-outlet chamber into a first part and a second part. The second part is disposed around the outer periphery of the first part. The first part is connected to the aerobic chamber. Both the first part and the second part are connected to the second sub-outlet chamber. The second part has a liquid outlet on its housing, and the liquid outlet is connected to the second part.

8. The wastewater treatment device according to claim 7, characterized in that, The plate body includes a first sub-plate body close to the aerobic chamber and a second sub-plate body away from the aerobic chamber, and the first sub-plate body and the second sub-plate body are connected; The end of the first sub-plate away from the aerobic chamber is inclined toward the center of the liquid outlet chamber relative to the end near the aerobic chamber. And / or, the direction from the end of the second sub-plate away from the aerobic chamber to the end near the aerobic chamber is parallel to the direction of gravity; And / or, the distance between the plate and the aerobic chamber along the direction of gravity is the first distance, the plate includes a third end close to the liquid outlet and a fourth end away from the liquid outlet, and the first distance gradually decreases along the direction from the fourth end to the third end.

9. A wastewater treatment system, characterized in that, The wastewater treatment device includes any one of the claims 1-8 above.

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