CN220907279U - Rural domestic sewage treatment device - Google Patents
Rural domestic sewage treatment device Download PDFInfo
- Publication number
- CN220907279U CN220907279U CN202322679000.6U CN202322679000U CN220907279U CN 220907279 U CN220907279 U CN 220907279U CN 202322679000 U CN202322679000 U CN 202322679000U CN 220907279 U CN220907279 U CN 220907279U
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- sewage treatment
- filter
- water inlet
- autotrophic denitrification
- treatment device
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- 239000010865 sewage Substances 0.000 title claims abstract description 62
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 53
- 239000011593 sulfur Substances 0.000 claims abstract description 53
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 51
- 230000001651 autotrophic effect Effects 0.000 claims abstract description 51
- 239000011449 brick Substances 0.000 claims abstract description 51
- 238000011010 flushing procedure Methods 0.000 claims abstract description 38
- 238000004140 cleaning Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000001680 brushing effect Effects 0.000 claims abstract description 4
- 230000000737 periodic effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 77
- 239000002351 wastewater Substances 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 5
- 239000010802 sludge Substances 0.000 description 19
- 239000012535 impurity Substances 0.000 description 8
- 238000001914 filtration Methods 0.000 description 6
- 238000005189 flocculation Methods 0.000 description 5
- 230000016615 flocculation Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007952 growth promoter Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model relates to a rural domestic sewage treatment device, which comprises a shell, wherein a pretreatment unit positioned at the upper part and a sulfur autotrophic denitrification unit positioned at the lower part are arranged in the shell; the pretreatment unit comprises a paved filter brick, and a cleaning unit for periodic brushing is arranged at the upper part of the filter brick; the sulfur autotrophic denitrification unit comprises a sulfur autotrophic denitrification filter material, and a back flushing assembly is arranged at the lower part of the sulfur autotrophic denitrification filter material. According to the sewage treatment device, high-efficiency denitrification can be realized through pretreatment and sulfur autotrophic denitrification, no additional carbon source is needed, and long-term stable operation of the sewage treatment device can be ensured through the cleaning unit relative to the pretreatment unit and the back flushing component of the sulfur autotrophic denitrification unit, so that the sewage treatment device is more suitable for rural domestic sewage treatment application.
Description
Technical Field
The application relates to the technical field of water treatment, in particular to a rural domestic sewage treatment device.
Background
The rural domestic sewage has direct influence on the rural ecological environment and the living quality of villagers.
Most of the sewage treatment facilities in rural areas only take over sewage of septic tanks, and have the characteristics of high nitrogen and low carbon, and the sewage quantity fluctuation is large.
Rural areas belong to relatively less developed areas, so that operation and maintenance personnel are few, and the operation level of the equipment required by personnel is high. When the A/O process is adopted, it is difficult to realize efficient denitrification by means of timed and quantitative carbon source supplementation. In view of the above problems, there is a need to develop a high-efficiency denitrification technology that can be stably operated for a long period of time in an environment where rural domestic sewage has a low C/N ratio and is unattended and weak in operation and maintenance forces.
Disclosure of utility model
The application aims to provide a rural domestic sewage treatment device which adopts sulfur autotrophic denitrification to realize high-efficiency denitrification, does not need additional carbon sources, and is more suitable for long-term stable treatment of rural domestic sewage.
In order to achieve the above purpose, the utility model provides a rural domestic sewage treatment device, which comprises a shell, wherein a pretreatment unit positioned at the upper part and a sulfur autotrophic denitrification unit positioned at the lower part are arranged in the shell; the pretreatment unit comprises a paved filter brick, and a cleaning unit for periodic brushing is arranged at the upper part of the filter brick; the sulfur autotrophic denitrification unit comprises a sulfur autotrophic denitrification filter material, and a back flushing assembly is arranged at the lower part of the sulfur autotrophic denitrification filter material.
In an alternative embodiment, the filter bricks comprise microporous ceramic filter bricks which are distributed in a rectangular array at the upper part of the shell and are integrally laid at opposite inclinations.
In an alternative embodiment, a sewage drain is arranged on the shell, and the sewage drain is arranged at the inclined bottom end of the filter brick and is externally connected with a sludge box.
In an alternative embodiment, a mounting bar is provided in the housing, the mounting bar being provided at the bottom of the filter brick, the filter brick being detachably connected to the mounting bar.
In an alternative embodiment, the cleaning unit is slidably disposed on the housing and comprises a driving assembly and a roller assembly, the driving assembly comprises a driving motor, the roller assembly comprises a roller connected to the driving motor, and a track for the roller to be mounted in a matched manner is disposed on the top of the housing.
In an alternative embodiment, the drive assembly comprises a drive housing, and the cleaning unit comprises cleaning bristles mounted on the drive housing by a connecting rod.
In an alternative embodiment, the bottom of the sulfur autotrophic denitrification filter is provided with a supporting layer, the bottom of the supporting layer is provided with a filter plate, and the back flushing assembly is arranged on the filter plate and is used for periodically back flushing the sulfur autotrophic denitrification filter.
In an alternative embodiment, the back flushing assembly comprises a water inlet pipeline and a plurality of water distribution pipelines, a plurality of back flushing spray heads are uniformly distributed on each water distribution pipeline, and the shell is connected with the back flushing air inlet pipeline.
In an optional embodiment, the pretreatment device further comprises a water inlet tank and a dosing device, wherein the dosing device is connected with the water inlet tank through a dosing pipeline, the water inlet tank is connected with the shell through a water inlet tank water outlet pipe, a water inlet is formed in the shell, the water inlet tank water outlet pipe is connected with the water inlet, and the water inlet is arranged at the upper part of the pretreatment unit.
In an alternative embodiment, a backwash water outlet is arranged on the shell, and is connected with a backwash return pipeline, and the backwash return pipeline is connected with the water inlet tank and is used for discharging backwash wastewater of the sulfur autotrophic denitrification filter material to the water inlet tank.
Through the preprocessing unit who sets up, can carry out prefiltering to intaking, intercept on the filter brick of laying in preprocessing unit solid sludge impurity, through setting up the clean unit that is used for regularly scrubbing on the upper portion of filter brick, can clear away the mud impurity of interception on the filter brick.
The sulfur autotrophic denitrification filter material has the functions of bearing microorganisms and realizing high-load denitrification, is formed by reasonably matching components such as sulfur, natural minerals, electronic media, biological growth promoters and the like based on breakthrough and upgrading of sulfur and iron autotrophy, has the function of bearing microorganisms, and also has an electron donor required by denitrification and realizes high-load denitrification.
By arranging the back flushing component at the lower part of the sulfur autotrophic denitrification filter material, the back flushing of the sulfur autotrophic denitrification filter material can be carried out regularly, and the treatment capacity of the sulfur autotrophic denitrification filter material is improved.
According to the sewage treatment device, high-efficiency denitrification can be realized through pretreatment and sulfur autotrophic denitrification, no additional carbon source is needed, and long-term stable operation of the sewage treatment device can be ensured through the cleaning unit relative to the pretreatment unit and the back flushing component of the sulfur autotrophic denitrification unit, so that the sewage treatment device is more suitable for rural domestic sewage treatment application.
Additional features and advantages of the application will be set forth in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a rural domestic sewage treatment device according to the present application;
FIG. 2 is a schematic view of the connection structure of the drain pipe in the top view of the housing;
FIG. 3 is a schematic view of the structure of the rail on the housing;
FIG. 4 is a schematic view of the construction of a backwash assembly;
fig. 5 is a schematic structural view of the cleaning unit.
Icon:
1-a housing; 11-a sewage pipeline; 12-mounting a rod; 13-track; 14-a water inlet; 15-backwashing a water outlet; 16-a filter material feeding hole;
2-a pretreatment unit; 21-filter bricks;
A 3-sulfur autotrophic denitrification unit; 31-sulfur autotrophic denitrification filter; 32-a supporting layer; 33-a filter plate;
4-a cleaning unit; 41-a drive box; 42-rolling wheels; 43-cleaning and shaving; 44-connecting rods;
5-back flushing assembly; 51-a water inlet pipeline; 52-a water distribution pipeline; 53-recoil spray head; 54-recoil air inlet pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put in use of the product of this application, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, in combination with fig. 2 to 5, the rural domestic sewage treatment device of the present application is mainly applied to denitrification treatment of rural domestic sewage, and specifically, by setting a form of a cleaning unit 4 and a back flushing assembly 5, the filter bricks 21 of the pretreatment unit 2 are regularly brushed, and the sulfur autotrophic denitrification filter 31 is backwashed, so as to improve the treatment effect of the sewage treatment device on rural domestic sewage, and promote long-term stable operation of the sewage treatment device.
The rural domestic sewage treatment device comprises a shell 1, wherein a pretreatment unit 2 positioned at the upper part and a sulfur autotrophic denitrification unit 3 positioned at the lower part are arranged in the shell 1.
The pretreatment unit 2 is mainly used for carrying out preliminary filtration on the inflow water, and intercepts solid sludge impurities through paved filter bricks 21.
The sulfur autotrophic denitrification unit 3 performs denitrification treatment on the pretreated domestic sewage mainly through the characteristics of the sulfur autotrophic denitrification filter 31.
By providing the cleaning unit 4 for periodic brushing on the upper portion of the filter brick 21, the sludge intercepted on the filter brick 21 can be periodically cleaned. By combining the arrangement of the back flushing assembly 5, the sludge in the filter material can be back flushed and returned to a water inlet tank (not shown in the figure) at the upstream of the sewage treatment device, and returned to the pretreatment unit 2 again after being treated by adding the medicine, so that the sludge obtained after the flocculation treatment by adding the medicine is intercepted on the filter bricks 21 and is removed from the sewage treatment device through the cleaning unit 4.
In the sewage treatment apparatus of the present application, during normal operation, domestic sewage fed from the water inlet tank is primarily filtered through the filter bricks 21, and then the primarily filtered sewage is denitrified through the sulfur autotrophic denitrification filter 31.
When the sewage treatment device runs for a period of time, the sulfur autotrophic denitrification filter 31 is required to be backwashed, impurities in the sulfur autotrophic denitrification filter 31 are backwashed through the backwashing component 5, the backwashed wastewater flows back to the water inlet tank, then the chemical is added into the water inlet tank, so that the backwashed wastewater is flocculated and precipitated, the flocculated and precipitated sludge impurities are returned to the shell 1 from the water inlet tank, are intercepted on the filter bricks 21 after preliminary filtration of the pretreatment unit 2, and are discharged from the sewage treatment device through the cleaning unit 4.
Through the cleaning unit 4 and the back flushing assembly 5 in the utility model, the sulfur autotrophic denitrification filter 31 can be back flushed regularly, the sludge impurities which are obtained through the chemical adding treatment and are flocculated and precipitated are intercepted on the filter bricks 21, and finally the sludge impurities are removed from the sewage treatment device through the cleaning unit 4.
The two aspects of the cleaning unit and the back flushing assembly 5 are combined, so that the sulfur autotrophic denitrification filter 31 can be finally backwashed, and the long-term stable operation of the sewage treatment device can be ensured by periodically treating the filter bricks 21 and the sulfur autotrophic denitrification filter 31 on the premise of not adding an additional carbon source, so that the device is more suitable for treating rural domestic sewage.
For the pretreatment unit 2, in one specific embodiment, the filter bricks 21 comprise microporous ceramic filter bricks 21, and the microporous ceramic filter bricks 21 are distributed in a rectangular array at the upper part of the casing 1 and are integrally laid at opposite inclinations.
Specifically, the pretreatment unit 2 comprises a microporous ceramic filter brick 21 which is entirely laid, and the microporous ceramic filter brick 21 consists of four parts of aggregate particles, a bonding agent, a pore-forming agent and a rare earth corrosion inhibitor. The surface and the inside of the porous membrane are formed into bridge arch-shaped open pores which are communicated with each other through high-temperature sintering, when fluid passes through the micropore channels, suspended matters, colloid particles and macromolecular organic matters are trapped on the surface of the product, and the fluid passes through the micropore channels to generate various physical and chemical effects, so that the purposes of purification and filtration are achieved.
The microporous ceramic filter bricks 21 are integrally paved in a relatively inclined manner, so that an obliquely arranged filter layer on the upper part of the sewage treatment device can be formed, and the backwash wastewater returns to the pretreatment unit 2 after flocculation and precipitation treatment, so that precipitated sludge can obliquely flow to the inclined bottom ends of the filter bricks 21 automatically.
Further, by connecting the drain pipe 11 to the housing 1 and connecting the drain pipe 11 to a portion of the inclined bottom end of the filter brick 21, the sludge flowing to the inclined bottom of the filter brick 21 can be discharged through the drain pipe 11. The sewage pipeline 11 is externally connected with a sludge box, so that the flocculated and precipitated sludge can be discharged to the sludge box, and the sludge can be collected and transported.
The installation pole 12 is provided in the casing 1 in this embodiment, the installation pole 12 sets up the bottom of filter brick 21, filter brick 21 detachably connects on the installation pole 12, make things convenient for the installation and the dismantlement of filter brick 21, do benefit to simultaneously and change partial filter brick 21.
When the sludge is discharged by gravity, the cleaning unit 4 is slidably arranged on the housing 1 based on the fact that the cleaning unit 4 can brush the surface of the filter bricks 21, and the sliding of the cleaning unit 4 is completed through the cooperation of the driving assembly and the roller 42 assembly included in the cleaning unit. Specifically, the driving assembly comprises a driving motor, the roller 42 assembly comprises a roller 42 connected to the driving motor, and a rail 13 for the roller 42 to be matched and installed is arranged at the top of the shell 1.
When the surface sludge of the filter bricks 21 needs to be cleaned, the driving motor drives the rollers 42 to rotate, the rollers 42 are specifically and limitedly arranged on the track 13 at the top of the shell 1, and the driving assembly can slide along the track 13 at the top of the shell 1 through the rotation of the rollers 42.
Further, the driving assembly includes a driving case 41, a driving motor is installed in the driving case 41, the cleaning unit includes cleaning bristles 43, and the cleaning bristles 43 are installed on the driving case 41 through a connection rod 44. During cleaning, the driving box 41 can be moved under the cooperation of the roller 42 and the track 13, and further, the cleaning scraping hair 43 is driven to move when the driving box 41 moves, and the cleaning scraping hair 43 is in direct contact with the top of the filter brick 21, so that the filter brick 21 is cleaned when the cleaning scraping hair 43 moves.
The cleaning unit 4 cleans the surface of the filter brick 21, so that the sludge remained on the surface of the filter brick 21 can be scrubbed, the filter flux of the filter brick 21 can be recovered, and the preliminary filtering effect of the pretreatment unit 2 can be improved.
In another specific embodiment, the bottom of the sulfur autotrophic denitrification filter 31 is provided with a supporting layer 32, the bottom of the supporting layer 32 is provided with a filter plate 33, and the back flushing assembly 5 is installed on the filter plate 33 to regularly back flush the sulfur autotrophic denitrification filter 31.
The sulfur autotrophic denitrification filter 31 adopts graded particle size, increases the filling volume, has good water flow state, is more stable for filtering sewage, the supporting layer 32 comprises cobbles arranged at the lower part of the sulfur autotrophic denitrification filter 31, and the bottom of the supporting layer 32 is fixedly connected with a filter plate 33, so that the sewage is conveniently filtered before flowing out on the premise of supporting the sulfur autotrophic denitrification filter 31 and the cobbles. A filter material feeding hole 16 is arranged on the shell, so that filter materials can be conveniently and periodically fed into the shell to compensate the loss of the filter materials which are led out and removed along with the wastewater during back flushing.
Specifically, the back flush assembly 5 includes a water inlet pipeline 51 and a plurality of water diversion pipelines 52, each water diversion pipeline 52 is uniformly distributed with a plurality of back flush nozzles 53, the shell 1 is connected with a back flush air inlet pipeline 54, the back flush nozzles 53 are fixedly connected to the filter plates 33, and are distributed at the bottom of the sulfur autotrophic denitrification filter 31 in a rectangular array.
Through inlet channel 51, water diversion pipeline 52 and recoil shower nozzle 53, can carry out the backwash to the sulfur autotrophic denitrification filter 31 that bears in filter 33 top, combine recoil inlet channel 54 simultaneously, can form gas-water mixture recoil medium, do benefit to the impurity recoil that gathers in the sulfur autotrophic denitrification filter 31 and wash out.
Based on the flow in the back flushing stage, the sewage treatment device further comprises a water inlet tank and a dosing device (the water inlet tank and the dosing device are not shown in the drawing), specifically, the water inlet tank plays a role of an adjusting tank, and the water inlet tank is beneficial to transfer of back flushing wastewater and dosing flocculation of the dosing device into the water inlet tank while receiving normal water.
The dosing device is connected with the water inlet tank through a dosing pipeline and is mainly used for adding coagulant and flocculant into the water inlet tank, and enters the pretreatment area of the shell 1 after stirring reaction in the water inlet tank.
The water inlet tank is connected with the shell 1 through a water inlet tank water outlet pipe, a water inlet 14 is arranged on the shell 1, the water inlet tank water outlet pipe is connected with the water inlet 14, and the water inlet 14 is arranged at the upper part of the pretreatment unit 2.
Through this kind of setting form, can guarantee sewage treatment plant's normal inflow on the one hand, on the other hand can also make the waste water after the dosing handle follow the intake box and let in casing 1 to after preliminary filtration through pretreatment unit 2, make the mud after the flocculation hold back at the top of filter brick 21, further discharge from the system through cleaning unit 4.
In order to ensure that during back flushing, the waste water after back flushing the sulfur autotrophic denitrification filter material 31 is led into a water inlet tank, a back flushing water outlet 15 is arranged on the shell 1, the back flushing water outlet 15 is connected with a back flushing backflow pipeline, and the back flushing backflow pipeline is connected with the water inlet tank and is used for discharging the back flushing waste water of the sulfur autotrophic denitrification filter material 31 into the water inlet tank, so that normal guiding of the back flushing waste water can be maintained, and the back flushing waste water can be further led into the water inlet tank to obtain flocculation treatment.
It is pointed out that the growth condition of the biological film in the sulfur autotrophic denitrification area is judged according to the feedback of the liquid level and the water outlet flow, when the back flushing is needed, the water inlet is stopped, the back flushing is performed in good time, the back flushing wastewater is pumped back to the water inlet tank, at the moment, the dosing device is started, the coagulant and the flocculant are added into the water inlet tank, and the mixture enters the pretreatment area after the stirring reaction.
The sulfur autotrophic denitrification filter 31 is backwashed regularly and the filter bricks 21 are cleaned regularly, so that sludge in the system can be effectively removed, the running condition of the sewage treatment device is improved, and the sewage treatment device can be ensured to run stably for a long time.
It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The rural domestic sewage treatment device is characterized by comprising a shell, wherein a pretreatment unit positioned at the upper part and a sulfur autotrophic denitrification unit positioned at the lower part are arranged in the shell; the pretreatment unit comprises a paved filter brick, and a cleaning unit for periodic brushing is arranged at the upper part of the filter brick; the sulfur autotrophic denitrification unit comprises a sulfur autotrophic denitrification filter material, and a back flushing assembly is arranged at the lower part of the sulfur autotrophic denitrification filter material.
2. The rural domestic sewage treatment apparatus according to claim 1, wherein the filter bricks comprise microporous ceramic filter bricks which are distributed in a rectangular array at the upper part of the housing and are integrally laid at opposite inclinations.
3. The rural domestic sewage treatment device according to claim 2, wherein a sewage drain pipe is arranged on the shell, and the sewage drain pipe is arranged at the inclined bottom end of the filter brick and is externally connected with a sewage tank.
4. The rural domestic sewage treatment apparatus according to claim 1, wherein a mounting rod is provided in the housing, the mounting rod being provided at a bottom of the filter brick, the filter brick being detachably connected to the mounting rod.
5. The rural domestic sewage treatment device according to claim 1, wherein the cleaning unit is slidably arranged on the housing and comprises a driving assembly and a roller assembly, the driving assembly comprises a driving motor, the roller assembly comprises rollers connected to the driving motor, and a track for the rollers to be mounted in a matched manner is arranged on the top of the housing.
6. The rural domestic sewage treatment apparatus according to claim 5, wherein the driving assembly comprises a driving tank, and the cleaning unit comprises cleaning bristles mounted on the driving tank through a connection rod.
7. The rural domestic sewage treatment device according to claim 1, wherein a supporting layer is arranged at the bottom of the sulfur autotrophic denitrification filter material, a filter plate is arranged at the bottom of the supporting layer, and the back flushing assembly is arranged on the filter plate and used for periodically back flushing the sulfur autotrophic denitrification filter material.
8. The rural domestic sewage treatment device according to claim 7, wherein the back flushing assembly comprises a water inlet pipeline and a plurality of water distribution pipelines, a plurality of back flushing spray heads are uniformly distributed on each water distribution pipeline, and the shell is connected with a back flushing air inlet pipeline.
9. The rural domestic sewage treatment device according to claim 1, further comprising a water inlet tank and a dosing device, wherein the dosing device is connected with the water inlet tank through a dosing pipeline, the water inlet tank is connected with the shell through a water inlet tank water outlet pipe, a water inlet is arranged on the shell, the water inlet tank water outlet pipe is connected with the water inlet, and the water inlet is arranged at the upper part of the pretreatment unit.
10. The rural domestic sewage treatment device according to claim 9, wherein a backwash water outlet is arranged on the shell, the backwash water outlet is connected with a backwash return pipe, and the backwash return pipe is connected with the water inlet tank and is used for discharging backwash wastewater of the sulfur autotrophic denitrification filter material to the water inlet tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322679000.6U CN220907279U (en) | 2023-10-07 | 2023-10-07 | Rural domestic sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322679000.6U CN220907279U (en) | 2023-10-07 | 2023-10-07 | Rural domestic sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220907279U true CN220907279U (en) | 2024-05-07 |
Family
ID=90915740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322679000.6U Active CN220907279U (en) | 2023-10-07 | 2023-10-07 | Rural domestic sewage treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220907279U (en) |
-
2023
- 2023-10-07 CN CN202322679000.6U patent/CN220907279U/en active Active
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