CN113072182A - Integrated rural domestic sewage treatment device and method - Google Patents
Integrated rural domestic sewage treatment device and method Download PDFInfo
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- CN113072182A CN113072182A CN202110367488.1A CN202110367488A CN113072182A CN 113072182 A CN113072182 A CN 113072182A CN 202110367488 A CN202110367488 A CN 202110367488A CN 113072182 A CN113072182 A CN 113072182A
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- 239000010865 sewage Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000010802 sludge Substances 0.000 claims abstract description 118
- 244000005700 microbiome Species 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims abstract description 5
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 3
- 231100000719 pollutant Toxicity 0.000 claims abstract description 3
- 239000011521 glass Substances 0.000 claims description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 21
- 239000010935 stainless steel Substances 0.000 claims description 21
- 238000005273 aeration Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 235000012431 wafers Nutrition 0.000 description 25
- 239000000463 material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides an integrated rural domestic sewage treatment device and method, which comprises an inverted cone-shaped pretreatment device, an anaerobic zone, an aerobic zone, a first hollow cylinder, a second hollow cylinder and an inverted cone-shaped sludge zone. The second hollow cylinder is positioned inside the first hollow cylinder; the pretreatment device is arranged on the second hollow cylinder, and the upper bottom of the inverted cone of the sludge area is connected with the lower end of the first hollow cylinder; the space between the first hollow cylinder and the second hollow cylinder is an aerobic zone, and the interior of the second hollow cylinder is an anaerobic zone; sewage firstly enters a pretreatment device, the precipitated sewage overflows from the periphery of the pretreatment device and enters an anaerobic zone, partial pollutants are degraded under the action of microorganisms in the anaerobic zone and then enter an aerobic zone from a through hole at the lower part of a second hollow cylinder, and the sewage treated by the aerobic zone overflows from the periphery of the upper part of a first hollow cylinder and is drained; the sewage treatment effect is good; the device has small volume and low energy consumption, and is suitable for rural families.
Description
Technical Field
The invention belongs to the technical field of water treatment, relates to a sewage treatment device, and particularly relates to an integrated rural domestic sewage treatment device and method.
Background
Along with the acceleration of the rural urbanization process, the improvement of the living standard of farmers and the change of the living style, the discharge amount of rural domestic sewage is gradually increased. Because rural residences are dispersed, pollution sources are also quite dispersed, the difficulty in collecting and treating the domestic sewage is large, part of the domestic sewage is directly discharged without being treated, and the main discharge ways are as follows: directly sprinkled to the ground, discharged into a river nearby or enter the river through a sewer. The concentrations of COD, ammonia nitrogen and the like in rural domestic sewage are higher, the inorganization discharge of the rural domestic sewage causes great environmental pollution, and meanwhile, the rural domestic sewage discharge is also an important reason for water deterioration and ecosystem degradation. The treatment of rural domestic sewage is an important link for building beautiful villages, and is related to the happy lives of rural residents, so that the problem of rural domestic sewage pollution is more and more concerned. The harmless treatment of rural domestic sewage has very important significance. However, the rural domestic sewage treatment device which is actually operated at present has the problems that the COD removal rate of most devices with poor treatment effect is less than 80%, integration, miniaturization and the like are difficult to realize.
Disclosure of Invention
Aiming at the technical problem, the invention provides an integrated rural domestic sewage treatment device and method; the device has good treatment effect on sewage, small volume and low energy consumption, is suitable for rural families, and solves the problems of low treatment rate of rural domestic sewage, poor treatment effect, difficulty in realizing integration, miniaturization and the like in the prior treatment technology.
The technical purpose is realized by the following technical scheme:
an integrated rural domestic sewage treatment device comprises an inverted cone-shaped pretreatment device, an anaerobic zone, an aerobic zone, a first hollow cylinder, a second hollow cylinder and an inverted cone-shaped sludge zone;
the second hollow cylinder is positioned in the first hollow cylinder, the central lines of the second hollow cylinder and the first hollow cylinder are overlapped, and the second hollow cylinder is higher than the first hollow cylinder; the pretreatment device is arranged on the second hollow cylinder, and the upper bottom of the inverted cone of the sludge area is connected with the lower end of the first hollow cylinder;
the pretreatment device comprises a hollow inverted cone and a sludge pipe, and a plurality of drainage notches are formed in the circumference of the upper part of the hollow inverted cone; one end of the sludge pipe is communicated with the bottom of the hollow inverted cone, and the other end of the sludge pipe is inserted into the second hollow cylinder and is communicated with the sludge area; a first valve is arranged on the sludge pipe;
the space between the first hollow cylinder and the second hollow cylinder is an aerobic zone, and the interior of the second hollow cylinder is an anaerobic zone; the wall surface of the lower part of the second hollow cylinder is provided with a through hole, and the second hollow cylinder is communicated with the first hollow cylinder; an aeration pipe is arranged on the inner wall of the first hollow cylinder;
the upper end of the second hollow cylinder is provided with a reticular wafer, the reticular wafer is arranged between the lower bottom of the first hollow cylinder and the inverted cone upper bottom of the sludge area, and the first hollow cylinder is communicated with the sludge area through the holes of the reticular wafer; soft fiber fillers are suspended on the reticular wafer at the upper end of the second hollow cylinder and distributed in the anaerobic zone and the aerobic zone;
the lower bottom of the sludge area is provided with a sludge discharge pipe, and the sludge discharge pipe is provided with a second valve.
In the scheme, the upper bottom surface of the second hollow cylinder is 3-6mm higher than the upper bottom surface of the first hollow cylinder.
In the scheme, through holes are formed in the wall surface of the area 1/10-1/8 at the lower part of the second hollow cylinder, and the porosity is 60% -80%.
In the scheme, 6-10 drainage notches are uniformly arranged at the top of the hollow inverted cone of the pretreatment device, the length of each drainage notch is 8-20mm, and the width of each drainage notch is 4-10 mm.
In the scheme, the first hollow cylinder is made of stainless steel or organic glass, the ratio of the height to the inner diameter is 1-1.3, and the wall thickness is 2-5 mm.
In the scheme, the second hollow cylinder is made of stainless steel or organic glass, the ratio of the height to the inner diameter is 1.8-2.2, and the wall thickness is 2-5 mm.
In the scheme, the diameter of the reticular circular sheets is equal to the inner diameter of the first hollow cylinder, and the centers of the two reticular circular sheets are positioned on the central line of the second hollow cylinder; the mesh wafer is made of stainless steel or organic glass, the thickness of the mesh wafer is 2-5mm, and the mesh size of the upper mesh wafer is 24-40 mm; the mesh size of the lower reticular disc is 10-20 mm.
In the scheme, the hollow inverted cone in the sludge area is made of stainless steel or organic glass, the diameter of the upper bottom is equal to that of the first hollow cylinder, the ratio of the height of the hollow inverted cone to the diameter of the upper bottom is 1-1.2, and the wall thickness of the cone is 2-5 mm; the sludge discharge pipe is hollow cylindrical, is made of stainless steel or organic glass, and has a length of 30-50mm, an inner diameter of 20-30mm and a wall thickness of 2-5 mm.
In the scheme, the hollow inverted cone of the pretreatment device is made of stainless steel or organic glass, the size of the hollow inverted cone is equivalent to that of the hollow inverted cone of the sludge area, the sludge pipe welded at the bottom is made of stainless steel or organic glass, the height of the sludge pipe is equal to that of the second hollow cylinder, the inner diameter of the sludge pipe is 20-30mm, the wall thickness of the sludge pipe is 2-5mm, and the inner diameter of the second hollow cylinder is larger than 2 times of the inner diameter of the sludge pipe at the bottom of the pretreatment device.
A sewage treatment method of the integrated rural domestic sewage treatment device comprises the following steps:
sewage firstly enters a pretreatment device with a closed first valve of a bottom sludge pipe, the precipitated sewage overflows from a drainage gap at the periphery of a hollow inverted cone of the pretreatment device and enters an anaerobic zone of a second hollow cylinder, pollutants in the sewage are partially degraded under the action of microorganisms in the anaerobic zone, the sewage treated by the anaerobic zone enters an aerobic zone of the first hollow cylinder from a through hole at the lower part of the second hollow cylinder and is further degraded under the action of microorganisms in the aerobic zone, and the sewage treated by the aerobic zone overflows from the periphery of the upper part of the first hollow cylinder and is drained; when the sludge in the pretreatment device is enough, a first valve of a sludge pipe at the bottom of the pretreatment device is opened, the sludge in the pretreatment device is discharged into a sludge area, and when the sludge in the sludge area is enough, the sludge in the sludge area is discharged through a sludge discharge pipe.
Compared with the prior art, the invention has the beneficial effects that: when the integrated rural domestic sewage treatment device disclosed by the invention is used for treating sewage, the sewage treatment effect is good through precipitation, anaerobic treatment and aerobic treatment; the device has small volume and is suitable for rural families; the sewage enters the pretreatment device from the beginning, and the subsequent treatment processes are all self-flowing, so that the energy consumption is low; the pretreatment device and the sludge area both adopt reverse cone devices, which is beneficial to improving the precipitation effect of suspended matters and reducing the concentration of the suspended matters in the supernatant.
Drawings
FIG. 1 is a schematic structural view of an integrated rural domestic sewage treatment device;
FIG. 2 is a schematic view of a second hollow cylinder;
FIG. 3 is a schematic view of the pretreatment apparatus;
FIG. 4 is a schematic view of a hollow inverted cone and sludge discharge pipe forming a sludge zone;
fig. 5 is a schematic view of a mesh wafer.
In the figure: 1. a pretreatment device; 2. an anaerobic zone; 3. an aerobic zone; 4. a sludge zone; 5. a sludge pipe; 6. a first valve; 7. a sludge discharge pipe; 8. a second valve; 9. a first hollow cylinder; 10. a second hollow cylinder; 11. a mesh wafer; 12. an aeration pipe; 13. a drainage notch; 14. and a through hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
As shown in fig. 1-5, an integrated rural domestic sewage treatment device comprises an inverted cone-shaped pretreatment device 1, an anaerobic zone 2, an aerobic zone 3, a first hollow cylinder 9, a second hollow cylinder 10 and an inverted cone-shaped sludge zone 4; the second hollow cylinder 10 is positioned inside the first hollow cylinder 9, the central lines of the second hollow cylinder 10 are overlapped, and the second hollow cylinder 10 is higher than the first hollow cylinder 9; the pretreatment device 1 is arranged on a second hollow cylinder 10, and the upper bottom of an inverted cone of the sludge area 4 is connected with the lower end of a first hollow cylinder 9; the pretreatment device 1 comprises a hollow inverted cone and a sludge pipe 5, and the upper circumference of the hollow inverted cone is provided with a plurality of drainage notches 13; one end of the sludge pipe 5 is communicated with the bottom of the hollow inverted cone, and the other end of the sludge pipe is inserted into the second hollow cylinder 10 and is communicated with the sludge area 4; a first valve 6 is arranged on the sludge pipe 5; the space between the first hollow cylinder 9 and the second hollow cylinder 10 is an aerobic zone 3, and the interior of the second hollow cylinder 10 is an anaerobic zone 2; a through hole 14 is formed in the wall surface of the lower portion of the second hollow cylinder 10, and the second hollow cylinder 10 is communicated with the first hollow cylinder 9; an aeration pipe 12 is arranged on the inner wall of the first hollow cylinder 9; the upper end of the second hollow cylinder 10 is provided with a reticular wafer 11, the reticular wafer 11 is arranged between the lower bottom of the first hollow cylinder 9 and the upper bottom of the inverted cone of the sludge area 4, and the first hollow cylinder 9 is communicated with the sludge area 4 through the holes of the reticular wafer 11; soft fiber fillers are suspended on the reticular wafer 11 at the upper end of the second hollow cylinder 10 and are distributed in the anaerobic zone 2 and the aerobic zone 3; the lower bottom of the sludge area 4 is provided with a sludge discharge pipe 7, and the sludge discharge pipe 7 is provided with a second valve 8.
The central lines of the first hollow cylinder 9 and the second hollow cylinder 10 are superposed, the lower bottom surfaces are superposed, the upper bottom surface of the second hollow cylinder 10 is parallel to the upper bottom surface of the first hollow cylinder 9, and the upper bottom surface of the second hollow cylinder 10 is 3mm higher than the upper bottom surface of the first hollow cylinder 9; the interior of the second hollow cylinder 10 is provided with an anaerobic zone 2, a circumferential area of the lower part 1/10 of the second hollow cylinder 10 is provided with through holes 14, and the porosity is 60%; the lower bottom of the first hollow cylinder 9 and the upper bottom of the second hollow cylinder 10 are both welded with a reticular wafer 11, the diameter of the reticular wafer 11 is equal to the inner diameter of the upper bottom surface and the lower bottom surface of the first hollow cylinder 9, and the centers of the two reticular wafers 11 are positioned on the central line of the second hollow cylinder 10. The sludge area 4 is formed by the inner space of a hollow inverted cone, and the periphery of the upper bottom of the inverted cone is connected with the periphery of the lower bottom of the first hollow cylinder 9; the bottom of the hollow inverted cone of the sludge area 4 is welded with a sludge discharge pipe 7, and a second valve 8 is arranged on the sludge discharge pipe 7 to control the discharge of sludge. Pretreatment device 1 includes cavity inverted cone and sludge pipe 5, sludge pipe 5 sets up in cavity inverted cone bottom, and the top of cavity inverted cone evenly sets up 6 drainage breach 13, and drainage breach 13 is long for 8mm, and the width is 4 mm.
The first hollow cylinder 9 is made of stainless steel, the ratio of the height to the inner diameter is 1, and the wall thickness is 2 mm; the second hollow cylinder 10 is made of stainless steel, the height-to-inner diameter ratio is 1.8, and the wall thickness is 2 mm; the reticular circular sheets 11 welded at the lower bottom of the first hollow cylinder 9 and the upper bottom of the second hollow cylinder 10 are made of stainless steel, the thickness is 2mm, the mesh size of the reticular circular sheets 11 at the upper part is 24mm, and the mesh size at the central position is equivalent to the outer diameter of the sludge pipe 5 of the pretreatment device; the mesh size of the lower reticular disc 11 is 10 mm.
The material of the hollow inverted cone of the sludge area 4 is stainless steel, the diameter of the upper bottom of the hollow inverted cone is equal to that of the first hollow cylinder 9, the ratio of the height of the hollow inverted cone to the diameter of the upper bottom of the hollow inverted cone is 1, and the wall thickness of the cone is 2 mm; the sludge discharge pipe 7 is hollow cylinder-shaped, is made of stainless steel, and has a length of 30mm, an inner diameter of 20mm and a wall thickness of 2 mm.
When the integrated rural domestic sewage treatment device is assembled, the pretreatment device 1 is arranged on the upper portion of the second hollow cylinder 10, the sludge pipe 5 of the pretreatment device 1 penetrates through the reticular wafer 11 at the upper bottom of the second hollow cylinder 10, and the central line of the sludge pipe 5 coincides with the central lines of the first hollow cylinder 9 and the second hollow cylinder 10. Perforated aeration pipes 12 are uniformly distributed on the inner wall of the first hollow cylinder 9 to provide dissolved oxygen required by aerobic microorganisms; soft fiber fillers are hung on the reticular disks 11 at the upper bottom of the second hollow cylinder 10 in the aerobic zone 3 and the anaerobic zone 2 for forming a biological membrane to treat sewage.
Example 2
As shown in fig. 1-5, an integrated rural domestic sewage treatment device comprises an inverted cone-shaped pretreatment device 1, an anaerobic zone 2, an aerobic zone 3, a first hollow cylinder 9, a second hollow cylinder 10 and an inverted cone-shaped sludge zone 4; the second hollow cylinder 10 is positioned inside the first hollow cylinder 9, the central lines of the second hollow cylinder 10 are overlapped, and the second hollow cylinder 10 is higher than the first hollow cylinder 9; the pretreatment device 1 is arranged on a second hollow cylinder 10, and the upper bottom of an inverted cone of the sludge area 4 is connected with the lower end of a first hollow cylinder 9; the pretreatment device 1 comprises a hollow inverted cone and a sludge pipe 5, and the upper circumference of the hollow inverted cone is provided with a plurality of drainage notches 13; one end of the sludge pipe 5 is communicated with the bottom of the hollow inverted cone, and the other end of the sludge pipe is inserted into the second hollow cylinder 10 and is communicated with the sludge area 4; a first valve 6 is arranged on the sludge pipe 5; the space between the first hollow cylinder 9 and the second hollow cylinder 10 is an aerobic zone 3, and the interior of the second hollow cylinder 10 is an anaerobic zone 2; a through hole 14 is formed in the wall surface of the lower portion of the second hollow cylinder 10, and the second hollow cylinder 10 is communicated with the first hollow cylinder 9; an aeration pipe 12 is arranged on the inner wall of the first hollow cylinder 9; the upper end of the second hollow cylinder 10 is provided with a reticular wafer 11, the reticular wafer 11 is arranged between the lower bottom of the first hollow cylinder 9 and the upper bottom of the inverted cone of the sludge area 4, and the first hollow cylinder 9 is communicated with the sludge area 4 through the holes of the reticular wafer 11; soft fiber fillers are suspended on the reticular wafer 11 at the upper end of the second hollow cylinder 10 and are distributed in the anaerobic zone 2 and the aerobic zone 3; the lower bottom of the sludge area 4 is provided with a sludge discharge pipe 7, and the sludge discharge pipe 7 is provided with a second valve 8.
The central lines of the first hollow cylinder 9 and the second hollow cylinder 10 are superposed, the lower bottom surfaces are superposed, the upper bottom surface of the second hollow cylinder 10 is parallel to the upper bottom surface of the first hollow cylinder 9, and the upper bottom surface of the second hollow cylinder 10 is 6mm higher than the upper bottom surface of the first hollow cylinder 9; the interior of the second hollow cylinder 10 is provided with an anaerobic zone 2, the lower 1/8 area of the second hollow cylinder 10 is perforated with holes 14, and the porosity is 80%; the lower bottom of the first hollow cylinder 9 and the upper bottom of the second hollow cylinder 10 are both welded with a reticular wafer 11, the diameter of the reticular wafer 11 is equal to the inner diameter of the upper bottom surface and the lower bottom surface of the first hollow cylinder 9, and the centers of the two reticular wafers 11 are positioned on the central line of the second hollow cylinder 10. The sludge area 4 consists of a hollow inverted cone inner space, and the periphery of the upper bottom of the inverted cone is welded on the periphery of the lower bottom of the first hollow cylinder 9; the bottom of the hollow inverted cone of the sludge area 4 is welded with a sludge discharge pipe 7, and a valve 8 is arranged on the sludge discharge pipe 7 to control the discharge of the sludge. The pretreatment device 1 is composed of a hollow inverted cone, the bottom of the hollow inverted cone is welded with a sludge pipe 5, the top of the hollow inverted cone is evenly provided with 10 drainage gaps 13, the length of each drainage gap 13 is 20mm, and the width of each drainage gap is 10 mm.
The first hollow cylinder 9 is made of organic glass, the ratio of the height to the inner diameter is 1.3, and the wall thickness is 5 mm; the second hollow cylinder 10 is made of organic glass, the ratio of the height to the inner diameter is 2.2, and the wall thickness is 5 mm; the reticular circular sheets 11 welded at the lower bottom of the first hollow cylinder 9 and the upper bottom of the second hollow cylinder 10 are made of organic glass, the thickness is 5mm, the mesh size of the reticular circular sheets 11 at the upper part is 40mm, and the mesh size at the central position is equivalent to the outer diameter of the sludge pipe 5 of the pretreatment device; the mesh size of the lower reticular disc 11 is 20 mm.
The hollow inverted cone of the sludge area 4 is made of organic glass, the diameter of the upper bottom of the hollow inverted cone is equal to that of the first hollow cylinder 9, the ratio of the height of the hollow inverted cone to the diameter of the upper bottom of the hollow inverted cone is 1.2, and the wall thickness of the cone is 5 mm; the sludge discharge pipe 7 is hollow cylinder-shaped, is made of organic glass, and has the length of 50mm, the inner diameter of 30mm and the wall thickness of 5 mm.
When the integrated rural domestic sewage treatment device is assembled, the pretreatment device 1 is arranged on the upper portion of the second hollow cylinder 10, the sludge pipe 5 of the pretreatment device 1 penetrates through the reticular wafer 11 at the upper bottom of the second hollow cylinder 10, and the central line of the sludge pipe 5 coincides with the central lines of the first hollow cylinder 9 and the second hollow cylinder 10. Perforated aeration pipes 12 are uniformly distributed on the inner wall of the first hollow cylinder 9 to provide dissolved oxygen required by aerobic microorganisms; soft fiber fillers are suspended on the reticular disks 11 at the upper bottom of the second hollow cylinder 10 in the aerobic zone 3 and the anaerobic zone 2 for forming a biological membrane to treat sewage.
Based on the design of the structure and parameter range of the invention, the integrated rural domestic sewage treatment devices prepared in the embodiments 1 and 2 are adopted to treat urban domestic sewage, wherein the operation conditions of the integrated rural domestic sewage treatment devices in the two embodiments are the same, and the aeration amount of the aerobic zone 3 is 0.1m3And h, the pH value of inlet water is about 7.2, the temperature is about 25 ℃, the total hydraulic retention time is 8h, and the carrier filling rate is 45%. When the two integrated rural domestic sewage treatment devices stably operate, the removal rate of COD by the integrated rural domestic sewage treatment device manufactured in the embodiment 1 can reach 96.5 percent, and NH content4 +The N removal rate can reach 96.2%; example 2 the integrated rural domestic sewage treatment device made by the method can remove 95.9 percent of COD and NH4 +The removal rate of-N can reach 95.2%, and the treatment effect is good.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. An integrated rural domestic sewage treatment device is characterized by comprising an inverted cone-shaped pretreatment device (1), an anaerobic zone (2), an aerobic zone (3), a first hollow cylinder (9), a second hollow cylinder (10) and an inverted cone-shaped sludge zone (4);
the second hollow cylinder (10) is positioned inside the first hollow cylinder (9), the central lines of the second hollow cylinder (10) are overlapped, and the second hollow cylinder (10) is higher than the first hollow cylinder (9); the pretreatment device (1) is arranged on a second hollow cylinder (10), and the upper bottom of an inverted cone of the sludge area (4) is connected with the lower end of a first hollow cylinder (9);
the pretreatment device (1) comprises a hollow inverted cone and a sludge pipe (5), and a plurality of drainage notches (13) are formed in the circumference of the upper part of the hollow inverted cone; one end of the sludge pipe (5) is communicated with the bottom of the hollow inverted cone, and the other end of the sludge pipe is inserted into the second hollow cylinder (10) and is communicated with the sludge area (4); a first valve (6) is arranged on the sludge pipe (5);
the space between the first hollow cylinder (9) and the second hollow cylinder (10) is an aerobic zone (3), and the interior of the second hollow cylinder (10) is an anaerobic zone (2); a through hole (14) is formed in the wall surface of the lower portion of the second hollow cylinder (10), and the second hollow cylinder (10) is communicated with the first hollow cylinder (9); an aeration pipe (12) is arranged on the inner wall of the first hollow cylinder (9);
the upper end of the second hollow cylinder (10) is provided with a reticular wafer (11), the reticular wafer (11) is arranged between the lower bottom of the first hollow cylinder (9) and the upper bottom of the inverted cone of the sludge area (4), and the first hollow cylinder (9) is communicated with the sludge area (4) through the holes of the reticular wafer (11); soft fiber fillers are suspended on the reticular circular sheets (11) at the upper end of the second hollow cylinder (10), and are distributed in the anaerobic zone (2) and the aerobic zone (3);
the lower bottom of the sludge area (4) is provided with a sludge discharge pipe (7), and the sludge discharge pipe (7) is provided with a second valve (8).
2. The integrated rural domestic sewage treatment device according to claim 1, wherein the upper bottom surface of the second hollow cylinder (10) is 3-6mm higher than the upper bottom surface of the first hollow cylinder (9).
3. The integrated rural domestic sewage treatment device according to claim 1, wherein the wall surface of the lower portion 1/10-1/8 of the second hollow cylinder (10) is provided with through holes (14), and the porosity is 60% -80%.
4. The integrated rural domestic sewage treatment device according to claim 1, wherein 6-10 drainage notches (13) are uniformly arranged at the top of the hollow inverted cone of the pretreatment device (1), and the drainage notches (13) have a length of 8-20mm and a width of 4-10 mm.
5. The integrated rural domestic sewage treatment device according to claim 1, wherein the first hollow cylinder (9) is made of stainless steel or organic glass, the ratio of the height to the inner diameter is 1-1.3, and the wall thickness is 2-5 mm.
6. The integrated rural domestic sewage treatment device according to claim 1, wherein the second hollow cylinder (10) is made of stainless steel or organic glass, the ratio of the height to the inner diameter is 1.8-2.2, and the wall thickness is 2-5 mm.
7. The integrated rural domestic sewage treatment device according to claim 1, wherein the diameter of the mesh-shaped circular sheet (11) is equal to the inner diameter of the first hollow cylinder (9), and the centers of the two mesh-shaped circular sheets (11) are on the central line of the second hollow cylinder (10); the mesh wafer (11) is made of stainless steel or organic glass, the thickness is 2-5mm, and the mesh size of the upper mesh wafer (11) is 24-40 mm; the mesh size of the lower reticular disc (11) is 10-20 mm.
8. The integrated rural domestic sewage treatment device according to claim 1, wherein the hollow inverted cone of the sludge area (4) is made of stainless steel or organic glass, the diameter of the upper bottom is equal to that of the first hollow cylinder (9), the ratio of the height of the hollow inverted cone to the diameter of the upper bottom is 1-1.2, and the wall thickness of the cone is 2-5 mm; the sludge discharge pipe (7) is hollow cylindrical, is made of stainless steel or organic glass, and has a length of 30-50mm, an inner diameter of 20-30mm and a wall thickness of 2-5 mm.
9. The integrated rural domestic sewage treatment device according to claim 1, wherein the hollow inverted cone of the pretreatment device (1) is made of stainless steel or organic glass, the size of the hollow inverted cone is equivalent to that of the sludge area (4), the sludge pipe (5) welded at the bottom is made of stainless steel or organic glass, the height of the sludge pipe is equal to that of the second hollow cylinder (10), the inner diameter of the sludge pipe is 20-30mm, the wall thickness of the sludge pipe is 2-5mm, and the inner diameter of the second hollow cylinder (10) is 2 times larger than that of the sludge pipe (5) at the bottom of the pretreatment device (1).
10. A method of integrated rural domestic sewage treatment plant according to any of claims 1-9, comprising the steps of:
sewage firstly enters a pretreatment device (1) with a closed first valve (6) of a bottom sludge pipe (5), settled sewage overflows from a peripheral drainage notch (13) of a hollow inverted cone of the pretreatment device (1) and enters an anaerobic zone (2) of a second hollow cylinder (10), pollutants in the sewage are partially degraded under the action of microorganisms in the anaerobic zone (2), the sewage treated by the anaerobic zone (2) enters an aerobic zone (3) of the first hollow cylinder (9) from a through hole at the lower part of the second hollow cylinder (10) and is further degraded under the action of the microorganisms in the aerobic zone (3), and the sewage treated by the aerobic zone (3) overflows and is discharged from the periphery of the upper part of the first hollow cylinder (9); opening a first valve (6) of a sludge pipe (5) at the bottom of the pretreatment device (1), discharging sludge in the pretreatment device (1) into a sludge area (4), and discharging the sludge in the sludge area (4) through a sludge discharge pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110367488.1A CN113072182A (en) | 2021-04-06 | 2021-04-06 | Integrated rural domestic sewage treatment device and method |
Applications Claiming Priority (1)
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| CN110240349A (en) * | 2018-03-10 | 2019-09-17 | 北控水务(中国)投资有限公司 | One kind is with A2Integrated sewage treating apparatus based on/O technique |
| CN111908725A (en) * | 2020-08-19 | 2020-11-10 | 上海友联竹园第一污水处理投资发展有限公司 | Integrated village and town sewage treatment equipment and method thereof |
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| GB9105122D0 (en) * | 1991-03-12 | 1991-04-24 | Nikki Hanbai Co Ltd | Wastewater treating biological film tank |
| CN2825623Y (en) * | 2005-04-11 | 2006-10-11 | 香港生产力促进局 | waste water treatment device |
| US20140097137A1 (en) * | 2012-10-10 | 2014-04-10 | Nanjing University | Coupling bioreactor and method for purifying malodorous gases and wastewater |
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