CN214612082U - Sewage treatment device - Google Patents

Abstract

The utility model provides a sewage treatment device, include: the device comprises a shell, wherein a regulating tank, a micro-aerobic tank, a sedimentation tank, an artificial wetland and a clean water tank are arranged in the shell in a partitioned manner; anaerobic fillers are arranged in the regulating tank, an aerator is arranged at the bottom of the micro-aerobic tank, sewage is subjected to sequential biochemical degradation by anaerobic microorganisms and aerobic microorganisms, is precipitated by the sedimentation tank, and enters the clean water tank after being filtered and adsorbed by the artificial wetland; the inside outer calandria and the back flow of being provided with of clean water pond, outer calandria reaches all be connected with the air lifting device on the back flow, can make the clear water after the processing arrange outward or the backward flow. Through the anaerobic filler and the aerator, microorganisms with different functions can be adopted to effectively purify the sewage. The external discharge pipe and the return pipe arranged in the clean water tank can selectively discharge or return the treated clean water according to different treatment working conditions, and the restriction that domestic sewage cannot be collected and treated in a centralized manner in a distributed village layout is effectively broken through.

Description

Sewage treatment device

Technical Field

The utility model relates to a rural domestic sewage treatment field, concretely relates to sewage treatment plant.

Background

With the proposal of rural environment treatment policies such as beautiful villages and the like, the rural sewage treatment is bound to become an important link.

Due to the diversity of rural geographical positions and rural layout, rural dispersed sewage is not suitable to be collected, the treatment of rural domestic sewage is greatly restricted by adverse factors such as huge pipe network construction cost and the like, and the conventional pipe network collection simulating the urban sewage treatment mode and the centralized treatment of the collected sewage through treatment equipment are greatly restricted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewage treatment device can carry out rural domestic sewage's distributed processing, effectively breaks through factors such as geographical position and village overall arrangement variety and the restriction in the aspect of sewage collection that leads to.

The utility model provides a sewage treatment device, include: the device comprises a shell, wherein a regulating tank, a micro-aerobic tank, a sedimentation tank, an artificial wetland and a clean water tank are arranged in the shell in a partitioned manner;

anaerobic fillers are arranged in the regulating tank, an aerator is arranged at the bottom of the micro-aerobic tank, sewage is subjected to sequential biochemical degradation by anaerobic microorganisms and aerobic microorganisms, is precipitated by the sedimentation tank, and enters the clean water tank after being filtered and adsorbed by the artificial wetland;

the inside outer calandria and the back flow of being provided with of clean water pond, outer calandria reaches all be connected with the air lifting device on the back flow, can make the clear water after the processing arrange outward or the backward flow.

Through equalizing basin, little oxygen pond, sedimentation tank, constructed wetland and the clean water basin of separating the setting in the casing, make each cell body structure integrated in the casing, effectively reduced the space and taken up an area of, can shorten the stroke route of sewage in the processing procedure, effectively improved the treatment effeciency.

Through the anaerobism that sets up in the equalizing basin filler and the aerator that sets up in the little oxygen pond bottom, can make domestic sewage under the biochemical treatment of different function microorganisms, effectively degrade organic matter and ammonia nitrogen in the sewage, through the suspended solid in the sedimentation tank sedimentation sewage again, constructed wetland further filters the adsorption of pollutants, gets into the clean water basin after obtaining purification treatment. By combining the biochemical degradation and physical sedimentation filtration modes, the sewage treatment effect is effectively ensured.

Through the inside outer calandria and the back flow that sets up of clean water pond, can handle the clear water according to concrete actual conditions selectivity, including arranging the clear water after handling outward, perhaps make its backward flow to equalizing basin, effectively improved the flexibility of equipment operation.

The pneumatic lifting device connected with the external discharge pipe and the return pipe can discharge and return clear water with small flow, thereby further meeting the actual operation requirement of rural areas.

The utility model provides a sewage treatment plant has simple structure, and area is little, fortune dimension characteristics such as convenient can adapt to rural area's use scene, reaches the distributed processing purpose of domestic sewage.

In a further embodiment, a water inlet is arranged on the side wall of the regulating tank, and a water outlet is arranged on the side wall of the clean water tank.

Through the water inlet that sets up on the lateral wall of equalizing basin, can make the biological sewage that the dispersion was collected get into processing apparatus to through the biochemical degradation in different ponds to delivery port eduction gear on the clean water basin lateral wall.

In a further embodiment, an air pump is arranged at the top of the housing, an air supply pipe is communicated between the aerator and the air pump, and an air lifting pipe is communicated between the air lifting device and the air pump.

Through the air pump to and air supply pipe and the air lift pipe with the air pump intercommunication, can satisfy under the power supply condition, aerator and air lift device's normal operating, guarantee that sewage treatment plant discharges the processing to the clear water in a flexible way.

In a further embodiment, the external discharge pipe and the return pipe are vertically arranged in the clean water tank, and the gas lift pipe is communicated with the bottoms of the external discharge pipe and the return pipe.

The outer discharge pipe and the return pipe are vertically arranged in the clean water tank, so that the smoothness of water flow in a pipeline can be ensured, and the air resistance of the pneumatic lifting device to the ejection of clean water from the air lifting pipe and the return pipe is reduced; the air lift pipe is communicated with the bottoms of the external discharge pipe and the return pipe, so that the condition that the connecting part of the air lift pipe is full of clear water can be ensured, and the empty discharge of the air lift pipe on the external discharge pipe and the return pipe is avoided.

In a further embodiment, a sleeve is horizontally arranged between the clean water tank and the top of the regulating tank, the air lift pipe penetrates through the sleeve and then is connected with the external discharge pipe and the return pipe, and at least one part of the return pipe extends into the sleeve.

Through the sleeve pipe that can hold the exposed part of air stripping pipe that the level set up, make air stripping pipeline's arrangement more succinct. By extending a part of the return pipe into the sleeve, the structure of the device is further simplified, and the high integration of the sewage treatment device is realized.

In a further embodiment, the sleeve is of a T-shaped structure and comprises a longitudinal pipe and a transverse pipe spanning between the regulating reservoir and the artificial wetland.

The artificial wetland has the functions of effluent buffering, deep purification, wetland conservation and the like in the sewage treatment device, and can meet the actual treatment requirements of domestic sewage in rural areas.

The return pipe stretches into in the vertical pipe to make the backward flow clear water that flows into in the vertical pipe simultaneously flow back to equalizing basin and constructed wetland, can adjust the backward flow volume of clear water in good time through this kind of mode of setting, constitute the internal circulation of clear water in sewage treatment plant, guarantee sewage treatment plant's reliable operation.

In a further embodiment, the return tube extends into the longitudinal tube a length that is not less than one-half the length of the longitudinal tube.

Based on the mode that the sleeve pipe level was laid, in order to satisfy the clear water of backward flow in the back flow and can normally return to and arrange to equalizing basin and constructed wetland, need stretch into the sheathed tube length to the back flow and carry out the requirement, make its length of stretching into the longitudinal tube be no less than the half of longitudinal tube length. Through this kind of mode of setting up, can guarantee from the at utmost that the clear water of backward flow fully gets into equalizing basin and constructed wetland completely.

In a further embodiment, a vertically-installed three-way pipe is respectively arranged among the adjusting tank, the micro-oxygen tank, the sedimentation tank and the artificial wetland, two pipe orifices of a main pipe of the three-way pipe are vertically distributed, the pipe orifices of the branch pipes cross over the adjacent treatment tanks and are connected with vertically-arranged water outlet pipelines, and the water outlet pipelines all extend to the bottom of the shell.

Through the vertically installed three-way pipe, sewage can only enter the adjacent downstream treatment tank from the pipe orifice of the main pipe positioned at the lower part, and the oil separation effect is achieved. The floating oil on the liquid surface is salvaged periodically, and the load of the sewage treatment device is effectively reduced.

In a further embodiment, the bottom of the artificial wetland is provided with a water distribution pipe which is horizontally arranged and is connected with the water outlet pipeline, and the bottom pipe wall of the water distribution pipe is provided with a plurality of water distribution holes at intervals.

The multi-point water distribution of the sewage in the sedimentation tank in the artificial wetland can be realized through the horizontally arranged water distribution pipes and the plurality of water distribution holes arranged on the pipe wall at the bottom of the water distribution pipes at intervals, and the water distribution holes arranged on the pipe wall at the bottom of the water distribution pipes can effectively prevent the clogging of the water distribution pipes caused by fillers or solid particles and the like in the artificial wetland.

In a further embodiment, the oil-separating and slag-stopping device further comprises an oil-separating and slag-stopping pool, wherein the oil-separating and slag-stopping pool is connected with the shell through a pipeline, and a grid is arranged at the top of the oil-separating and slag-stopping pool.

In order to carry out preliminary treatment to rural domestic sewage at sewage treatment plant upper reaches, still be provided with independent oil removal and block the sediment pond independent of the casing, the oil removal blocks the sediment pond and specifically includes the cell body and sets up the grid at the cell body top, can block the sediment pond in the oil removal with the great impurity of volume and oil spot separation.

In a further embodiment, an electric cabinet is connected to the top of the housing, and the air pump is mounted in the electric cabinet.

The air pump is regarded as the utility model provides an only consumer can directly control high-efficiently through installing the air pump in the electric cabinet to make the air pump keep away from sewage treatment plant, effectively reduce the damage of air pump.

In a further embodiment, the shell is buried under the ground, and the adjusting tank, the micro-oxygen tank, the sedimentation tank and the clean water tank are all provided with access holes.

Through burying the casing underground to make whole sewage treatment plant's main part be located the lower part of frozen soil layer, can guarantee whole device normal operating in winter in the north. The arrangement of the access hole facilitates the normal operation of filling, part installation, equipment maintenance and other operations.

The beneficial effects of the utility model mainly lie in: through the equalizing basin, the little oxygen pond, the sedimentation tank that separate in the casing and set up, constructed wetland and clean water basin have constituted the sewage treatment unit of dispersed in rural area, through the anaerobism filler that sets up in the equalizing basin to and the aerator that sets up in the little oxygen pond, can make anaerobic microorganisms adsorb on the anaerobism filler and hang the membrane, make simultaneously constitute aerobic microorganisms's living environment in the little oxygen pond, carry out the purpose that effectively purifies to sewage with the microorganism that adopts different functions.

The external discharge pipe and the return pipe are arranged in the clean water tank, so that the treated clean water can be selectively discharged or returned according to different treatment working conditions, the treatment requirements of rural areas are met, and the restriction that domestic sewage cannot be collected and treated in a centralized manner in a distributed village layout is effectively broken through.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a top view of a sewage treatment apparatus according to the present invention;

FIG. 2 is a schematic diagram of a side view of the sewage treatment apparatus of the present invention;

FIG. 3 is a schematic view of the internal structure of the sewage treatment apparatus of the present invention;

fig. 4 is a schematic structural view of the medium-pressure pneumatic lifting device of the present invention.

In the figure: 1-shell, 11-regulating tank, 12-micro-oxygen tank, 121-aerator, 13-sedimentation tank, 14-clean water tank, 141-external drainage pipe, 142-return pipe, 15-artificial wetland, 151-water distribution pipe, 152-water distribution hole, 16-water inlet, 17-water outlet, 18-maintenance opening, 2-pneumatic lifting device, 21-air pump, 22-air supply pipe, 23-air stripping pipe, 24-air stripping sleeve, 3-sleeve, 31-longitudinal pipe, 32-transverse pipe, 4-tee joint, 41-water outlet pipeline and 5-electric cabinet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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 and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically 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 the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 1-3, the present invention provides a sewage treatment device, including: the device comprises a shell 1, wherein a regulating tank 11, a micro-aerobic tank 12, a sedimentation tank 13, an artificial wetland 15 and a clean water tank 14 are arranged in the shell 1 in a partitioned manner;

anaerobic fillers are arranged in the adjusting tank 11, an aerator 121 is arranged at the bottom of the micro-aerobic tank 12, sewage is subjected to sequential biochemical degradation by anaerobic microorganisms and aerobic microorganisms, suspended matters are precipitated in the sedimentation tank 13, and the sewage enters the clean water tank 14 after further adsorbing and filtering pollutants in the artificial wetland 15;

an external discharge pipe 141 and a return pipe 142 are arranged inside the clean water tank 14, and both the external discharge pipe 141 and the return pipe 142 are connected with a pneumatic lifting device 2, so that the treated clean water can be discharged or returned.

The utility model provides a major structure is casing 1, separates in casing 1 inside and is provided with a plurality of processing ponds, through with a plurality of processing ponds set in casing 1, has effectively reduced sewage treatment plant's occupation of land.

The sewage treatment process mainly comprises biochemical treatment and physical sedimentation, wherein the biochemical treatment is mainly carried out in an adjusting tank 11 and a micro-aerobic tank 12, anaerobic fillers arranged in the adjusting tank 11 are used for adsorbing and hanging anaerobic microorganisms, and organic matters in the sewage are subjected to anaerobic degradation in the adjusting tank 11 by the anaerobic microorganisms; the aerator 121 arranged in the micro-aerobic tank 12 provides living environment for aerobic microorganisms, aerobic degradation of organic matters in sewage is carried out, nitrification and hydrolytic acidification reactions are carried out, organic matters and ammonia nitrogen in the sewage are reduced, and the biodegradability of the sewage is improved.

The physical sedimentation is mainly carried out in the sedimentation tank 13, and the cleanliness of the sewage after biochemical treatment is effectively improved by carrying out the physical sedimentation on suspended matters in the sewage.

The pollutants after physical sedimentation are further adsorbed and filtered in the artificial wetland 15, and the pollutants after sedimentation are trapped in the artificial wetland 15.

After the sewage is subjected to biochemical treatment, physical sedimentation and adsorption filtration, the sewage is selectively discharged or refluxed through an outer discharge pipe 141 and a reflux pipe 142 in the clean water tank 14, and the water quantity and the water quality in the regulating tank 11 can be controlled through the reflux of the sewage, so that the load of the micro-aerobic tank 12 is reduced by diluting the inlet water concentration, and the normal operation of the sewage treatment in the regulating tank 11 is maintained.

The discharged clear water can be naturally evaporated or diffused to the surrounding land in the effluent wetland outside the device, so that the natural ecological conservation of the treated clear water outside the device is formed, the adaptability of the sewage treatment device in rural areas is effectively improved, and the bottleneck that the sewage cannot be treated in a centralized manner due to distributed village distribution is broken through.

The utility model discloses well water inlet 16 of setting on the 11 lateral walls of equalizing basin and the delivery port 17 of setting on 14 lateral walls of clean water basin are sewage treatment plant's main inlet outlet, and domestic sewage gets into equalizing basin 11 from water inlet 16, and the clear water after the processing is discharged from delivery port 17 when normal operating.

The sewage treatment device is externally provided with an effluent wetland for receiving and storing water, clear water discharged from the water outlet 17 normally enters the effluent wetland for storing and collecting the water, the effluent wetland specifically plays a role of ecological conservation, and the clear water can naturally permeate to underground water in the effluent wetland. Under special operating conditions, a small flow of reflux and discharge is performed through the reflux pipe 142 and the discharge pipe 141 in the clean water tank 14, respectively.

Be provided with air pump 21 at the top of casing 1, air pump 21 is as sewage treatment plant's consumer, be responsible for mainly providing air stripping power air for air lifting device 2, provide aeration air for aerator 121 simultaneously, power air mainly carries through the air stripping pipe 23 of connecting between air lifting device 2 and air pump 21, aeration air mainly carries through the air supply pipe 22 between aerator 121 and the air pump 21, through air supply pipe 22 and air stripping pipe 23, can satisfy under the power supply condition, aerator 121 and air lifting device 2's normal operating, guarantee that sewage treatment plant carries out emission treatment to clear water in a flexible way.

The external discharge pipe 141 and the return pipe 142 are vertically arranged in the clean water tank 14, the air lifting pipe 23 is specifically communicated with the bottoms of the external discharge pipe 141 and the return pipe 142, and the air lifting device 2 is mainly used for ejecting clear water in the external discharge pipe 141 and the return pipe 142.

Referring to fig. 4, the air-lift device 2 specifically includes a section of air-lift sleeve 24 respectively sleeved on the radial outer sides of the outer discharge pipe 141 and the return pipe 142, the outer diameter of the air-lift sleeve 24 is greater than the outer diameter of the inner pipe (the outer discharge pipe 141 and the return pipe 142), the air-lift pipe 23 is specifically connected to the air-lift sleeve 24, when the air-lift sleeve 24 is in operation, a cavity filled with power air is formed between the air-lift sleeve 24 and the inner pipe, a through hole is formed in the pipe wall of the inner pipe surrounded by the air-lift sleeve 24, and clean water in the inner pipe can move upwards through external extrusion of the power air and is finally discharged from the tops of the outer discharge pipe 141 and the return pipe 142.

Second embodiment

A sleeve 3 is horizontally arranged between the clean water tank 14 and the top of the regulating tank 11, the air lift pipe 23 penetrates through the sleeve 3 and then is connected with an external discharge pipe 141 and a return pipe 142, and at least one part of the return pipe 142 extends into the sleeve 3.

Through the sleeve 3 of level setting, can make the stripping pipe 23 wear to establish wherein, reduce the exposing of stripping pipe 23, make the arrangement of stripping pipeline more succinct. In addition, at least one part of the return pipe 142 extends into the sleeve 3, and the returned clean water can enter the sleeve 3 and finally return to the regulating tank 11 from the water outlet end of the sleeve 3, and the pipe distribution function and the return function are effectively integrated in the sleeve 3 through the arrangement mode, so that the structure of the device is further simplified, and the high integration of the sewage treatment device is realized.

The casing 3 in this embodiment is specifically a T-shaped structure, and includes a longitudinal pipe 31 and a transverse pipe 32 which are horizontally arranged, respectively, wherein the longitudinal pipe 31 extends along the length direction of the housing 1, the transverse pipe 32 is connected to the end of the longitudinal pipe 31, and the transverse pipe 32 spans between the regulating reservoir 11 and the artificial wetland 15, so that the outlets at the two ends of the transverse pipe 32 respectively correspond to the regulating reservoir 11 and the artificial wetland 15, and the return pipe 142 extending into the longitudinal pipe 31 can return the return clean water to the regulating reservoir 11 and the artificial wetland 15 through the outlets at the two ends of the transverse pipe 32.

In this embodiment, the artificial wetland 15 is filled with the filler, the vegetation is distributed on the upper part of the filler, the precipitated sewage entering the artificial wetland 15 from the sedimentation tank 13 can be further purified in an adsorption and filtration mode through the comprehensive actions of filler adsorption, vegetation absorption, microbial degradation, natural evaporation and the like in the artificial wetland 15, and the purified final purified water flows into the clean water tank 14 from the artificial wetland 15.

The artificial wetland 15 plays a role in effluent buffering, deep purification, wetland conservation and the like in the sewage treatment device, and can meet the actual treatment requirements of domestic sewage in rural areas.

The sleeve pipe 3 erects simultaneously at clean water basin 14, the top of equalizing basin 11 and constructed wetland 15, the one end of vertical pipe 31 is the opening form, make back flow pipe 142 stretch into in the vertical pipe 31, the other end of vertical pipe 31 is connected on violently managing 32, make the backward flow clear water that flows into in the vertical pipe 31 flow back to equalizing basin 11 and constructed wetland 15 simultaneously, can adjust the backward flow volume of clear water in good time through this kind of mode of setting, it is great when the outside effluent wetland normal water volume of sewage treatment plant, when can not continue to accept outer drainage, can flow back to constructed wetland 15 in through with the clear water, realize synthesizing the retaining function.

In order to ensure the return flow of the clean water in the return pipe 142, make the returned clean water in the return pipe 142 normally return to the adjusting tank 11 and the artificial wetland 15, and avoid the clean water from flowing back to the clean water tank 14 in the casing pipe 3, the extension length of the return pipe 142 in the longitudinal pipe 31 needs to be ensured.

In this embodiment, the length of the return pipe 142 extending into the longitudinal pipe 31 is not less than one half of the length of the longitudinal pipe 31, preferably not less than three quarters of the length of the longitudinal pipe 31, so as to ensure the return flow of the clear water to the maximum extent, and ensure that the returned clear water fully and completely enters the adjusting tank 11 and the artificial wetland 15 to the maximum extent.

The sewage flows among the regulating tank 11, the micro-aerobic tank 12, the sedimentation tank 13 and the artificial wetland 15 in the shell 1 through the vertically-installed tee joint 4 arranged among different treatment tanks, two pipe orifices of the main pipe of the tee joint 4 are distributed up and down, the pipe orifices of the branch pipes cross different treatment tanks and are connected with vertically-arranged water outlet pipelines 41, and the water outlet pipelines 41 all extend to the bottom of the shell 1.

Through tee bend 4 of vertical installation, make two be responsible for the mouth of pipe and distribute from top to bottom, can make the liquid level in each treatment tank be less than the upper portion and be responsible for the mouth of pipe, sewage can only get into adjacent low reaches treatment tank from being responsible for the mouth of pipe that is located the lower part, has reached the effect of oil removal. When flowing, the sewage enters the water outlet pipeline 41 through a branch pipe nozzle crossing the adjacent treatment tank, and enters a downstream treatment tank through the outlet of the water outlet pipeline 41 extending to the bottom of the shell 1. Through this kind of mode of setting up can prevent that the oil slick on the liquid level from getting into the low reaches and handle the pond, through salvage the processing to the oil slick regularly, effectively reduce sewage treatment plant's load.

The bottom of the artificial wetland 15 is provided with a water distribution pipe 151 which is horizontally arranged and is connected with the water outlet pipeline 41, and the pipe wall of the bottom of the water distribution pipe 151 is provided with a plurality of water distribution holes 152 at intervals.

Through the water distribution pipe 151 which is horizontally installed and the plurality of water distribution holes 152 which are arranged on the pipe wall at the bottom of the water distribution pipe 151 at intervals, multi-point water distribution of sewage in the sedimentation tank 13 in the artificial wetland 15 can be realized, the sewage after physical sedimentation of suspended matters can be further subjected to adsorption filtration treatment in the artificial wetland 15, the cleanliness is improved, the water distribution holes 152 are specifically formed in the pipe wall which is positioned at the lower part of the central line of the water distribution pipe 151, and the water distribution pipe 151 can be prevented from being clogged by filler or solid particles and the like in the artificial wetland 15.

Third embodiment

In this embodiment, the main body of the sewage treatment apparatus is independent of an oil-separating and slag-stopping tank (not shown in the figure), the oil-separating and slag-stopping tank is connected with the housing 1 through a pipeline, and untreated domestic sewage enters the housing 1 after being subjected to primary treatment in the oil-separating and slag-stopping tank.

The oil removal and residue blocking tank specifically comprises a tank body and a grid arranged at the top of the tank body, and can block impurities with large volume and oil stains on the grid and clean the grid regularly.

Be connected with electric cabinet 5 at the top of casing 1, air pump 21 installs in electric cabinet 5, through installing air pump 21 in electric cabinet 5, can directly control high-efficiently to make air pump 21 keep away from sewage treatment plant, effectively reduce the damage of air pump 21 in humid environment.

In order to ensure that the sewage treatment device can normally operate in winter in the north, the shell 1 is buried below the ground, and is specifically positioned below an anti-freezing layer in an installation area. And the adjusting tank 11, the micro-aerobic tank 12, the sedimentation tank 13 and the clean water tank 14 are all provided with access holes 18, so that the whole device can be ensured to normally operate in winter in the north. The arrangement of the access hole 18 facilitates the normal operation of filling, part installation, equipment maintenance and the like.

Based on factors such as real condition, special environment and humanity economy of rural area, the utility model provides a sewage treatment plant specifically includes circular telegram and unpowered two kinds of operational modes, specifically:

under the power-on mode, the water inflow of the device is adjusted in the adjusting tank 11 to adjust the water quality and the water quantity, and is deflected to enter the micro-aerobic tank 12, the micro-aerobic tank 12 adopts a micro-aeration treatment technology to carry out nitration and hydrolysis acidification reactions to degrade organic matters and ammonia nitrogen in sewage and improve the biodegradability of the sewage, then suspended matters in the sewage are precipitated through the precipitation tank 13, then the sewage enters the artificial wetland 15 and flows into the clean water tank 14 after being purified through the comprehensive actions of filler adsorption, plant absorption, microbial degradation, natural evaporation and the like in the artificial wetland 15, and a part of water flows back to the adjusting tank 11 and the artificial wetland 15 through the pneumatic lifting device 2 in the clean water tank 14, so that the clean water in the clean water tank 14 is periodically lifted to the ground surface through the outer discharge pipes 141 to be utilized or discharged while the treatment effect is optimized.

Under unpowered mode, the device is intake and is adjusted quality of water yield in equalizing basin 11, the anaerobism filler in equalizing basin 11 has strengthened the anaerobism efficiency simultaneously, then sewage baffling gets into little oxygen pond 12, because there is not the aeration this moment, sewage carries out anaerobism biodegradable in little oxygen pond 12, baffling gets into constructed wetland 15 after the sediment of sedimentation tank 13 is filtered again, purify sewage through the oxygen boosting of filler filtration absorption and plant roots in constructed wetland 15, the water after the processing gets into clean water basin 14 and stores. When the clean water tank 14 reaches a certain liquid level, if no use requirement exists, the clean water is discharged to the effluent wetland through the water outlet 17, and is further purified and temporarily stored.

In the micro-aerobic tank 12, the dissolved oxygen concentration can be controlled by controlling the aeration amount, the aeration amount is preferably 0.5-2mg/L in normal operation, and the generation of sludge can be reduced while the pollutant concentration is reduced within the aeration amount range, so as to avoid the blockage of the water distribution holes 152 in the artificial wetland 15; in addition, the sewage treatment apparatus of the present invention can only treat grey water generated in kitchens and washing and is not suitable for treating toilet drainage, and will be described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A sewage treatment apparatus, comprising: the device comprises a shell, wherein a regulating tank, a micro-aerobic tank, a sedimentation tank, an artificial wetland and a clean water tank are arranged in the shell in a partitioned manner;

anaerobic fillers are arranged in the regulating tank, an aerator is arranged at the bottom of the micro-aerobic tank, sewage is subjected to sequential biochemical degradation by anaerobic microorganisms and aerobic microorganisms, is precipitated by the sedimentation tank, and enters the clean water tank after being filtered and adsorbed by the artificial wetland;

the inside outer calandria and the back flow of being provided with of clean water pond, outer calandria reaches all be connected with the air lifting device on the back flow, can make the clear water after the processing arrange outward or the backward flow.

2. The sewage treatment device of claim 1, wherein the side wall of the regulating tank is provided with a water inlet, and the side wall of the clean water tank is provided with a water outlet.

3. The sewage treatment device of claim 1, wherein an air pump is disposed at the top of the housing, an air supply pipe is communicated between the aerator and the air pump, and an air lifting pipe is communicated between the air lifting device and the air pump.

4. The sewage treatment apparatus of claim 3, wherein the outer drain pipe and the return pipe are vertically arranged in the clean water tank, and the gas lift pipe is communicated with the bottoms of the outer drain pipe and the return pipe.

5. The wastewater treatment apparatus according to claim 3, wherein a sleeve is horizontally disposed on the top of the housing, the air lift pipe is connected to the external drain pipe and a return pipe after passing through the sleeve, and at least a portion of the return pipe extends into the sleeve.

6. The sewage treatment device according to claim 5, wherein the sleeve is of a T-shaped structure and comprises a transverse pipe spanning between the regulating reservoir and the artificial wetland and a longitudinal pipe communicated with the transverse pipe.

7. The wastewater treatment apparatus according to claim 6, wherein the length of the return pipe extending into the longitudinal pipe is not less than one-half of the length of the longitudinal pipe.

8. The sewage treatment device according to claim 6, wherein vertically installed tees are respectively arranged among the adjusting tank, the micro-aerobic tank, the sedimentation tank and the artificial wetland.

9. The sewage treatment device according to claim 8, wherein the bottom of the artificial wetland is provided with a horizontally arranged water distribution pipe, and the bottom pipe wall of the water distribution pipe is provided with a plurality of water distribution holes at intervals.

10. The wastewater treatment apparatus according to any of claims 1-9, wherein the housing is buried below ground.

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