CN216273653U - Rural domestic sewage treatment system - Google Patents
Rural domestic sewage treatment system Download PDFInfo
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- CN216273653U CN216273653U CN202220440117.1U CN202220440117U CN216273653U CN 216273653 U CN216273653 U CN 216273653U CN 202220440117 U CN202220440117 U CN 202220440117U CN 216273653 U CN216273653 U CN 216273653U
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Abstract
The utility model discloses a rural domestic sewage treatment system, which belongs to the technical field of domestic sewage treatment and comprises a pretreatment micro-aeration system, a biological filter system, an aeration biological system, a biological purification system and a nano-sand filtration system which are sequentially communicated; the pretreatment micro-aeration system comprises a tank body and a mixer arranged on the tank body, wherein a first aeration pipe is arranged in the tank body and is connected with an air pump, and the mixer is connected with a sewage pumping device and a dosing device; the biological filter system comprises a filter tank and a plurality of biological filter components; the aeration biological system comprises an aeration tank, a second aeration pipe and biological filter cloth, wherein the second aeration pipe is connected with an air pump; the biological purification system comprises a purification tank and a plurality of matrix tanks. The utility model simplifies the whole structure, reduces the manufacturing cost and the maintenance cost, has good sand and stone deposition effect, uniform medicament mixing, higher aeration oxygen dissolution rate, good flora purification effect, reduced purification cost and strong practicability, and is suitable for the purification of all sewage.
Description
Technical Field
The utility model belongs to the technical field of domestic sewage treatment, and relates to a micro-aeration device, in particular to a rural domestic sewage treatment system.
Background
The conventional rural domestic sewage treatment technology adopts the A O technology, namely anaerobic-anoxic-aerobic combined pollutant removal, so as to achieve the effect of purifying water quality, but the conventional process has the defects that: the microorganisms live in the activated sludge at the bottom of the tank, the sewage provides nutrient substances for the microorganisms, the microorganisms grow naturally, the purification period is long, and the efficiency is low.
In the prior art, domestic sewage is before carrying out biological purification, clear away the large granule silt in the sewage earlier, common method is the grid filtration, make the large granule silt deposit in the below of the jar body under the action of gravity, then periodic blowdown, carry out aeration treatment with sewage, let in the air in to sewage promptly, for the next technology in cultivate the biological fungus crowd who is used for purifying and do the preparation, still need add the medicament, carry out preliminary purification, in order to make sewage and medicament misce bene, set up agitating unit on the jar body, with the paddle with sewage and medicament misce bene. However, this approach has the disadvantages: when stirring sewage and medicament, gravel and sand also can rotate along with the paddle, can not make gravel and sand deposit completely to set up the great agitating unit of volume, the cost of manufacture is high, exposes in external environment, damages easily, and cost of maintenance is high.
In the prior art, the pretreated sewage directly enters the next biological purification process, but impurities in the sewage are not completely removed in the pretreatment process, and the impurities also seriously influence the purification of biological flora, so that the purification effect is poor. Meanwhile, in the biological purification process, the flora is put in a large pool, and the flora moves frequently along with the flow of the sewage and easily enters the next procedure along with the sewage, so that the loss and the waste of the flora are caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the utility model aims to provide a rural domestic sewage treatment system to achieve the purposes of uniform mixing of sewage and a medicament, thorough sand and stone deposition, good purification effect, complete purification of flora and avoidance of flora loss.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a rural domestic sewage treatment system comprises a pretreatment micro-aeration system, a biological filter tank system for microbial purification, an aeration biological system, a biological purification system and a nano sand filtration system for adsorption and filtration, wherein the pretreatment micro-aeration system, the biological filter tank system, the aeration biological system and the biological purification system are sequentially communicated;
the pretreatment micro-aeration system comprises a tank body which is used for containing sewage and is provided with a sewage discharge outlet, and a mixer which is arranged on the tank body, wherein a first aeration pipe is arranged in the tank body, the first aeration pipe is connected with an air pump, and the mixer is connected with a sewage pumping device and a dosing device;
the aeration biological system comprises an aeration tank and a second aeration pipe arranged in the aeration tank, and the second aeration pipe is connected with an air pump;
the biological filter system comprises a filter tank with a sewage discharge outlet and a plurality of biological filter components arranged in the filter tank;
the biological purification system comprises a purification tank with a sewage discharge outlet and a plurality of matrix pools which are arranged in the purification tank and used for culturing microbial floras.
As a limitation of the present invention: the pretreatment micro-aeration system, the biological filter system, the aeration biological system and the biological purification system are all provided with water outlets, and the heights are reduced in sequence, so that the supernatant flows in sequence.
As a further limitation of the utility model: the bottom of the tank body is conical; the blender sets up along the tangential direction of the jar body, including mixing section and pressure boost section, sewage pump goes into the mixing section of device and charge device and blender and is connected, the pressure boost section is the toper.
As a further limitation of the utility model: and spiral guide vanes for accelerating mixing are arranged on the inner wall of the mixing section of the mixer.
As another limitation of the present invention: the medicine adding device comprises a medicine tank, a stirring device used for uniformly mixing the prepared medicine and a pump body used for introducing the medicine into the mixer.
As a limitation of the present invention: the first aeration pipe is arranged in the tank body in a circle.
As a further limitation of the utility model: the biological filtration component comprises a frame, a filter screen detachably arranged on the frame and a filter surface arranged on the filter screen and used for adding a biological membrane generating material, wherein the filter surface is geotextile, and a feeding hose used for adding microbial flora is arranged in the filter surface.
As a third limitation of the present invention: be provided with a plurality of baffles in the purification tank, between two adjacent baffles and the purification tank inner wall, one is the upper portion opening, and another is the lower part opening, and a plurality of baffles interval dislocation set form a plurality of independent and the matrix pond that communicates.
As a limitation of the present invention: the nano sand filtration system is provided with two filter plates, a geotextile layer is laid on each filter plate, and a nano porous silica layer is filled between the two filter plates.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
(1) according to the utility model, sewage and the medicament are simultaneously added into the mixer, and the medicament is mixed with the sewage by using the pressure of the sewage, so that a mechanical stirring device is omitted, the production cost is greatly reduced, the arrangement of parts is reduced, the failure rate is reduced, the maintenance cost is reduced, the biological filtering component can further improve the filtering effect of pollutants, and a good purifying environment is provided for biological flora; meanwhile, the biological flora is separated by the matrix pool, the purification time and the purification efficiency of the biological flora can be improved, the loss of the biological flora is not easy to cause, the purification effect is greatly improved, the second aeration pipe can provide a required aerobic environment for microorganisms in the aeration tank, the dissolved oxygen rate is ensured, meanwhile, the biological filter tank, the aeration biological tank and the biological purification tank are mutually separated, different biological flora is purposefully placed and matched with each other, different pollutants are removed at different stages, the survival conditions of the flora can be better controlled, and the purification efficiency is improved;
(2) the height among all the systems is reduced in sequence, and the water flows automatically through the water outlet, so that the pumping cost is saved, and the system is economical and efficient;
(3) the pressurizing section of the mixer is conical, the diameter of the pressurizing section is gradually reduced, the time for mixing sewage and a medicament can be prolonged, the pressure of discharged liquid can be increased, the mixer is arranged tangentially, discharged liquid rotates along the inner wall of the tank body, large-particle sand and stones are thrown to the bottom of the tank body under the action of centrifugal force and gravity, and the conical tank body is favorable for gathering the sand and stones and is convenient for discharging mud;
(4) the spiral guide vane is arranged on the inner wall of the mixing section of the mixer, so that the mixing of the sewage and the medicament can be accelerated, and the mixing uniformity of the sewage and the medicament is improved;
(5) the vent holes on the aeration pipe are circumferentially arranged, so that the gas and the sewage can be fully mixed, and the dissolution rate is increased;
(6) the utility model supplements microbial flora to the filtering surface through the feeding hose, is rapid and convenient, and has strong practicability;
(7) the baffles arranged in a staggered manner can increase the residence time of microbial reaction, separate the whole purification tank, ensure the communication between the baffles, form an independent space and greatly save the manufacturing cost;
(8) the nano porous silicon dioxide layer can further adsorb peculiar smell and heterochrosis in the sewage, and the purification effect of the sewage is improved.
In conclusion, the utility model simplifies the whole structure, reduces the manufacturing cost and the maintenance cost, has good silt deposition effect, uniform medicament mixing, higher aeration oxygen dissolution rate, good flora purification effect, reduced purification cost and strong practicability, and is suitable for purifying rural domestic sewage.
Drawings
The utility model is described in further detail below with reference to the figures and the embodiments.
FIG. 1 is a schematic front view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the installation position of the mixer and the tank according to the embodiment of the present invention;
fig. 3 is a schematic top view of a biofiltration module according to an embodiment of the present invention installed in a filtration tank.
In the figure: 1-tank body, 2-sewage discharge outlet, 3-water outlet, 4-first aeration pipe, 5-air pump, 6-mixer, 61-mixing section, 62-pressurizing section, 7-spiral guide vane, 8-three-way joint, 9-sewage pumping device, 10-medicine tank, 11-motor, 12-stirring shaft, 13-stirring paddle, 14-pump body, 15-supporting leg, 16-filtering tank, 17-frame, 18-filtering screen, 19-filtering surface, 20-feeding hose, 21-purifying tank, 22-baffle, 23-nano sand filtering system, 24-filtering plate, 25-geotechnical cloth layer, 26-nano porous silica layer, 27-aeration tank and 28-second aeration pipe.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that a rural domestic sewage treatment system as described herein is a preferred embodiment, and is for purposes of illustration and explanation only, and is not to be construed as limiting the present invention.
Embodiment rural domestic sewage treatment system
Examples as shown in fig. 1-3, a rural domestic sewage treatment system comprises a pretreatment micro-aeration system, a biological filter system for microbial purification, an aeration biological system, a biological purification system, and a nano-sand filtration system 23 for adsorption, which are sequentially and communicatively arranged; the pretreatment micro-aeration system, the biological filter system, the biological aeration system, the biological purification system and the nano-sand filtration system 23 are all provided with water outlets 3, the heights of the water outlets are sequentially reduced, the water outlets are connected through pipelines, supernatant liquid flows sequentially to form an overflow mode, and the supernatant liquid is automatically discharged when reaching the liquid level of the water outlets 3; the sewage pump can also be used for connecting all the systems to form flow, and the embodiment adopts the mode of the water outlet 3, so that the manufacturing cost is low.
The pretreatment micro-aeration system comprises a tank body 1 for containing sewage and a first aeration pipe 4 arranged in the tank body 1, wherein the first aeration pipe 4 is connected with an air pump 5 for introducing air into the first aeration pipe 4, a mixer 6 is arranged on the tank body 1, and the mixer 6 is connected with a sewage pumping device 9 and a dosing device; the upper portion of the tank body 1 is cylindrical, the bottom of the tank body is conical, the tank body is arranged on the ground through four supporting legs 15, and the upper portion of the tank body 1 is provided with a water outlet 3 for flowing of supernatant.
The first aeration pipe 4 is arranged at the lower part in the tank body 1, a circle is arranged in the tank body 1 and is connected with the inner wall of the tank body 1 through a connecting rod, the first aeration pipe 4 is connected with the air pump 5 through a pipeline, the air pump 5 is arranged outside the tank body 1 and is used for introducing air into the first aeration pipe 4, in order to increase the uniformity of the first aeration pipe 4, the periphery of the first aeration pipe 4 is upwards and uniformly provided with exhaust holes, namely, the exhaust holes are arranged on the surface, far away from the circle center, of the first aeration pipe 4, so that the range of air exhaust is larger.
The tank body 1 is provided with a mixer 6, the mixer 6 is tubular and comprises a mixing section 61 and a pressurizing section 62, the mixing section 61 of the mixer 6 is connected with a sewage pumping device 9 and a drug adding device through a three-way joint 8, the sewage pumping device 9 is connected with the sewage pool, the sewage pumping device 9 and the dosing device are communicated with the mixing section 61 of the mixer 6, so that sewage and a medicament can simultaneously enter the mixing section 61, and as the sewage is pumped with a certain water pressure, when the medicament gets into mixing section 61, under hydraulic effect, mix with sewage, simultaneously, be provided with spiral guide vane 7 on the inner wall of 6 mixing sections 61 of blender, can play decompression and resistance's effect, the time of extension sewage dwell in mixing section 61 makes sewage and medicament intensive mixing, has saved the mechanical device to sewage and medicament stirring in jar body 1. The pressurizing section 62 of the mixer 6 is conical, the diameter of the pressurizing section is gradually reduced, so that the outlet is reduced, the resistance is further increased, and the time for mixing the sewage and the medicament is prolonged. The blender 6 sets up along the tangential direction level of jar body 1, makes the sewage that gets into in jar body 1 wash the inner wall to jar body 1 under the effect of pressure, forms the whirl, and under the effect of centrifugal force and gravity, the large granule silt in the sewage is got rid of to jar body 1 inner wall, falls down along the inner wall, and the gathering is in jar body 1 bottom, regularly opens the valve, can clear up.
The dosing device comprises a canister 10, a stirring device and a pump 14 for introducing medicament into the mixer 6. The medicinal tank 10 is arranged outside the tank body 1, the top of the medicinal tank 10 is provided with a stirring device, and the stirring device comprises a motor 11 arranged at the top of the medicinal tank 10, a stirring shaft 12 fixedly arranged on the shaft of the motor 11 and a stirring paddle 13 arranged on the stirring shaft 12. The medicine tank 10 is connected with the pump body 14 through a pipeline, the pump body 14 is connected with the mixing section 61 of the mixer 6 through a pipeline, and the medicine and the sewage are simultaneously injected into the mixer 6 for mixing.
The biofilter system includes filtering ponds 16 and locates a plurality of biological filter component that are used for getting rid of the pollutant in filtering ponds 16, filtering ponds 16's upper portion is provided with the water inlet, is connected with delivery port 3 on jar body 1 through the pipeline, biological filter component includes frame 17, the filter screen 18 that detachably set up on frame 17 of stainless steel and locates the filter screen 18 and be used for adding biofilm generation material's filter surface 19, filter screen 18 is stainless steel, filter screen 18 and filter surface 19 pass through bolt detachably and set up on frame 17, both sides on the frame 17 are provided with the angle steel, be equipped with the slot on filtering ponds 16's the inner wall, during the installation, peg graft the angle steel and fix in the slot. The filter surface 19 is made of geotextile, a feeding hose 20 is arranged in the middle of the filter surface 19, micropores are formed in the feeding hose 20, and supplementary microbial flora is timely added into the filter surface 19 through the feeding hose 20.
The aeration biological system comprises an aeration tank 27 and a second aeration pipe 28 arranged in the aeration tank 27, wherein the second aeration pipe 28 is connected with an air pump 5, namely the first aeration pipe 4 and the second aeration pipe 28 share the air pump 5, the on-off is controlled by a valve, the upper part of the aeration tank 27 is provided with a water inlet which is connected with a water outlet 3 on the filter 16 through a pipeline, and the second aeration pipe 28 is arranged along the height direction of the aeration tank 27 and is connected by a pipeline to form three branches, so that more oxygen can be dissolved in sewage, and a required living environment is provided for aerobic microorganisms in the aeration tank 27.
The biological purification system comprises a purification tank 21 and a plurality of matrix tanks which are arranged in the purification tank 21 and used for culturing microbial floras. The upper portion of the purification tank 21 is provided with a water inlet which is connected with the water outlet 3 on the aeration tank 27 through a pipeline, a plurality of baffles 22 are arranged in the purification tank 21, one baffle 22 is fixed with the bottom of the purification tank 21, an opening is formed at the upper portion, the other baffle 22 is fixed with the top of the purification tank 21, an opening is formed at the lower portion, the upper opening and the lower opening between two adjacent baffles 22 are arranged in a staggered mode at intervals, so that the opening positions of the baffles 22 are S-shaped, and a plurality of independent and communicated matrix tanks are formed.
The upper portion of nanometer sand filtration system 23 is provided with the water inlet to be connected with the delivery port 3 of purifying tank 21 through the pipeline, be provided with two filter plates 24 in the nanometer sand filtration system 23, all laid geotechnological cloth layer 25 on two filter plates 24, it has nanometer porous silica layer 26 to fill between two filter plates 24 for peculiar smell and heterochrosis in the absorption sewage, further improve the effect of purification.
The bottom of the tank body 1, the bottom of the filter tank 16, the bottom of the aeration tank 27, the bottom of the purification tank 21 and the upper part of the filter plate 24 of the nano-sand filtration system 23 are all provided with sewage outlets 2, and the sewage outlets 2 are connected through pipelines and used for discharging impurities. The heights of the water outlets 3 in the tank body 1, the filter tank 16, the aeration tank 27 and the purification tank 21 are sequentially reduced, so that the supernatant can flow in sequence without external force and enter the next process.
When using this embodiment, put the liquid medicine in medicinal tank 10 earlier, stir through agitating unit, then start pump body 14 and sewage pump and go into device 9, pour into the mixing section 61 of blender 6 simultaneously with the sewage medicament and mix, and in pouring into jar body 1 side by side, the gravel and sand of large granule nature deposit under action of gravity and centrifugal force combined action in the bottom of jar body 1, discharge through drain 2, start air pump 5 simultaneously, let in gas through first aeration pipe 4 in to sewage, provide oxygen for next step's microbial purification. The supernatant passes through delivery port 3 and flows to filtering ponds 16 by itself, sewage is earlier through the biological filtration subassembly, after further filtering the pollutant, the supernatant passes through delivery port 3 and flows to aeration tank 27 by itself, the microorganism in aeration tank 27 is aerobic microorganism, supply the air through second aeration pipe 28, can provide good aerobic environment for the microorganism, be favorable to the microorganism to purify, the supernatant after the purification passes through delivery port 3 and gets into purification tank 21, what put in the purification tank 21 is another kind of biological fungus crowd, purify other pollutant, the supernatant after the purification passes through delivery port 3 and gets into nanometer sand filtration system 23, be used for adsorbing heterochrosis and peculiar smell, accomplish the purification of sewage at last.
Claims (9)
1. A rural domestic sewage treatment system is characterized in that: comprises a pretreatment micro-aeration system, a biological filter system, an aeration biological system, a biological purification system and a nano sand filtration system, wherein the pretreatment micro-aeration system, the biological filter system, the aeration biological system and the biological purification system are sequentially communicated and arranged;
the pretreatment micro-aeration system comprises a tank body which is used for containing sewage and is provided with a sewage discharge outlet, and a mixer which is arranged on the tank body, wherein a first aeration pipe is arranged in the tank body, the first aeration pipe is connected with an air pump, and the mixer is connected with a sewage pumping device and a dosing device;
the aeration biological system comprises an aeration tank and a second aeration pipe arranged in the aeration tank, and the second aeration pipe is connected with an air pump;
the biological filter system comprises a filter tank with a sewage discharge outlet and a plurality of biological filter components arranged in the filter tank;
the biological purification system comprises a purification tank with a sewage discharge outlet and a plurality of matrix pools which are arranged in the purification tank and used for culturing microbial floras.
2. The rural domestic sewage treatment system of claim 1, wherein: the pretreatment micro-aeration system, the biological filter system, the aeration biological system and the biological purification system are all provided with water outlets, and the heights are reduced in sequence, so that the supernatant flows in sequence.
3. The rural domestic sewage treatment system of claim 2, wherein: the bottom of the tank body is conical; the blender sets up along the tangential direction of the jar body, including mixing section and pressure boost section, sewage pump goes into the mixing section of device and charge device and blender and is connected, the pressure boost section is the toper.
4. The rural domestic sewage treatment system of claim 3, wherein: and spiral guide vanes for accelerating mixing are arranged on the inner wall of the mixing section of the mixer.
5. The rural domestic sewage treatment system of any one of claims 1-4, wherein: the medicine adding device comprises a medicine tank, a stirring device used for uniformly mixing the prepared medicine and a pump body used for introducing the medicine into the mixer.
6. The rural domestic sewage treatment system of claim 5, wherein: the first aeration pipe is arranged in the tank body in a circle.
7. The rural domestic sewage treatment system of claim 6, wherein: the biological filtration component comprises a frame, a filter screen detachably arranged on the frame and a filter surface arranged on the filter screen and used for adding a biological membrane generating material, wherein the filter surface is geotextile, and a feeding hose used for adding microbial flora is arranged in the filter surface.
8. The rural domestic sewage treatment system of any one of claims 1-4, 6, 7, wherein: be provided with a plurality of baffles in the purification tank, between two adjacent baffles and the purification tank inner wall, one is the upper portion opening, and another is the lower part opening, and a plurality of baffles interval dislocation set form a plurality of independent and the matrix pond that communicates.
9. The rural domestic sewage treatment system of claim 8, wherein: the nano sand filtration system is provided with two filter plates, a geotextile layer is laid on each filter plate, and a nano porous silica layer is filled between the two filter plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220440117.1U CN216273653U (en) | 2022-03-03 | 2022-03-03 | Rural domestic sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220440117.1U CN216273653U (en) | 2022-03-03 | 2022-03-03 | Rural domestic sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216273653U true CN216273653U (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220440117.1U Active CN216273653U (en) | 2022-03-03 | 2022-03-03 | Rural domestic sewage treatment system |
Country Status (1)
| Country | Link |
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| CN (1) | CN216273653U (en) |
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- 2022-03-03 CN CN202220440117.1U patent/CN216273653U/en active Active
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