CN215049060U - In-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment - Google Patents
In-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment Download PDFInfo
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- CN215049060U CN215049060U CN202120588032.3U CN202120588032U CN215049060U CN 215049060 U CN215049060 U CN 215049060U CN 202120588032 U CN202120588032 U CN 202120588032U CN 215049060 U CN215049060 U CN 215049060U
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- 238000011282 treatment Methods 0.000 title claims abstract description 65
- 239000010865 sewage Substances 0.000 title claims abstract description 53
- 238000004140 cleaning Methods 0.000 title claims abstract description 43
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 238000009826 distribution Methods 0.000 claims abstract description 38
- 230000007062 hydrolysis Effects 0.000 claims abstract description 29
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 29
- 238000004062 sedimentation Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims description 42
- 241000196324 Embryophyta Species 0.000 claims description 35
- 239000004576 sand Substances 0.000 claims description 31
- 239000010802 sludge Substances 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 13
- 235000005273 Canna coccinea Nutrition 0.000 claims description 8
- 235000014676 Phragmites communis Nutrition 0.000 claims description 8
- 241000233948 Typha Species 0.000 claims description 8
- 210000005056 cell body Anatomy 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 241000234267 Strelitzia Species 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000011368 organic material Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 240000008555 Canna flaccida Species 0.000 claims 2
- 210000004027 cell Anatomy 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 9
- 241000234587 Canna Species 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 241001376691 Strelitzia reginae Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 241000205578 Thalictrum Species 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 244000273256 Phragmites communis Species 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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Abstract
The utility model discloses an in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment, which comprises a hydrolysis primary sedimentation tank, a tank body I and a tank body II, wherein sewage enters the hydrolysis primary sedimentation tank for pretreatment, then enters the tank body I, then enters the tank body II after the sewage treatment of the tank body I, and then is discharged after the deep treatment of the tank body II; the utility model has the advantages that: the in-situ cleaning composite type ecological filter tank is suitable for rural domestic sewage treatment, and can realize uniform water distribution, delay filter material blockage and reduce the filter material cleaning difficulty to the maximum extent on the basis of realizing high-efficiency sewage treatment, thereby greatly reducing the capital construction cost, reducing the operation and maintenance cost and realizing high-efficiency and stability of the ecological filter tank.
Description
Technical Field
The utility model relates to a rural domestic sewage treatment field, specifically speaking relates to a compound ecological filter of normal position washing that is suitable for rural domestic sewage treatment of primary treatment, secondary treatment, advanced treatment and water resource recycle of sewage.
Background
At present, the popular rural domestic sewage treatment technologies mainly comprise: the device class is as follows: anaerobic biological treatment technology, activated sludge treatment technology, biological membrane treatment technology, membrane biotechnology, related combination technology and the like; ecological class: artificial wetland technology, land treatment technology, pond stabilizing technology and the like. However, with the implementation and landing of a large number of rural domestic sewage treatment projects, the operation and maintenance problems become increasingly prominent, such as: the operation and maintenance cost of the biochemical treatment technology is high, the speciality is strong, and the maintenance is difficult; the traditional artificial wetland technology has the disadvantages of poor sanitary conditions, easy blockage, strong seasonality, high centralized dredging cost and the like, undoubtedly brings great difficulty to the operation and maintenance of rural sewage treatment facilities, and becomes a great focus of the attention of the planned project. Therefore, let us have to re-screen or develop new technologies with good treatment effect and easy maintenance treatment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses just a multi-block, two filler, easy washing, anti jam, combination two-way type that design for solving above-mentioned technical problem are suitable for rural domestic sewage treatment's compound ecological filter of normal position washing.
The utility model provides a technical scheme that its technical problem adopted is:
an in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment comprises a hydrolysis primary sedimentation tank, a tank body I and a tank body II, wherein sewage enters the tank body I after being pretreated in the hydrolysis primary sedimentation tank, enters the tank body II after being subjected to sewage receiving treatment in the tank body I, and is discharged after being subjected to advanced treatment in the tank body II;
the hydrolysis primary sedimentation tank comprises a plurality of compartments, and at least comprises one compartment with a sand hopper at the bottom and at least one compartment with a mud hopper at the bottom; the water inlet is positioned at the top of the first compartment, and the water outlet is positioned at the top of the last compartment;
the pool body I comprises a pool body I water inlet pipe, a pool body I water distribution pipe, light filler, a plant fixing groove and a pool body I water outlet pipe; the water inlet pipe of the pool body I is communicated with the water distribution pipe of the pool body I and is positioned at the bottom of the pool body I, and water enters the pool body I through the water inlet pipe of the pool body I and enters the interior of the pool body I through the water distribution pipe of the pool body I; the light filler is made of organic materials or porous ceramsite, is placed in the middle layer of the tank body I and can float upwards along with the water level; the plurality of plant fixing grooves are positioned at the top of the tank body I, and a water outlet pipe of the tank body I is positioned on the side surface of the top of the tank body I;
the pool body II comprises a pool body II water inlet pipe, a pool body II water distribution pipe, heavy filler and a pool body II water outlet pipe; the water inlet pipe of the tank body II is communicated with the water distribution pipe of the tank body II and is positioned at the top of the tank body II, and water enters the tank body II through the water inlet pipe of the tank body II and enters the tank body II through the water distribution pipe of the tank body II; the heavy filler is positioned in the middle layer of the tank body II, and the water outlet pipe of the tank body II is positioned on the side surface of the top of the tank body II.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the hydrolysis primary sedimentation tank is a 2-compartment tank with the volume ratio of 1:1, and the bottoms of the hydrolysis primary sedimentation tank are communicated with each other; a first grit chamber is arranged at the bottom of the first compartment, and the first grit chamber has a trapezoidal section; the height of the sand baffle plate is 50-80 cm, the sand baffle plate is arranged close to the tail end of the sand settling tank and is 0.3-0.6 m away from the partition plate of the compartment; the bottom of the second compartment is provided with an overflow slit and/or a weir; the sludge hopper is positioned at the bottom of the second compartment, and the bottom of the sludge hopper is provided with a sludge discharge pipe.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the hydrolysis primary sedimentation tank is provided with 3 compartments, and the volume ratio of the 3 compartments along the water flow direction is 3:3: 4; a second grit chamber is arranged at the bottom of the first compartment, and the second grit chamber has a trapezoidal section; the height of the second sand baffle is 50-80 cm, the second sand baffle is arranged close to the tail end of the first sand settling tank and is 0.3-0.6 m away from the partition board of the first compartment, and the bottom of the first compartment is communicated with the bottom of the second compartment; the bottom of the second compartment is provided with an overflow slit and/or a weir; the first sludge hopper is positioned at the bottom of the second compartment, and a sludge discharge pipe is arranged at the bottom of the first sludge hopper; the third compartment is communicated with the top of the second compartment, a guide plate is arranged at the communication port of the third compartment, and an overflowing seam and/or a weir are/is arranged at the bottom of the third compartment; the second sludge hopper is positioned at the bottom of the third compartment, and the bottom of the second sludge hopper is provided with a sludge discharge pipe.
According to the in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment, a plurality of plant fixing grooves in a tank body I are fixed by supporting rods and are uniformly distributed at the top of the tank body I, and the plant fixing grooves are circular or square grid baskets with the inner diameter of 200-300 mm and are internally provided with gravel or pebble fillers; and aquatic plants with strong dirt absorbing and reducing capabilities such as canna, thalictrum, cattail, reed and/or strelitzia are planted in the plant fixing grooves.
The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment comprises a tank body I and a water outlet collecting tank, wherein the water outlet collecting tank is located at the top end of the tank body and communicated with a water outlet pipe of the tank body I, the water outlet collecting tank is a rectangular tank, the tank depth is 300-500 mm, the tank width is 300-500 mm, and the tank length is equal to the tank width.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment further comprises a quick emptying pipe with a pipe diameter not less than 300mm, and the quick emptying pipe is used for quickly discharging water in the tank body I and cleaning filter materials.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the heavy filler is arranged in three layers, sand, gravel and lump stone are respectively arranged from top to bottom, and the particle size is gradually increased from top to bottom; the thickness ratio of the three layers is 1:1:2, and the particle sizes of the three layers can be selected respectively: 2-5 mm, 5-10 mm and 10-20 mm.
The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment is characterized in that the tank body II further comprises a water outlet collecting tank, the water outlet collecting tank is located at the bottom end of the tank body and is a rectangular tank, a tank bottom plate is lower than a tank end bottom plate by 200-400 mm and is used for water outlet falling flow, the width of the tank is 300-500 mm, and the length of the tank is equal to the width of the tank.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that at least 4 aquatic plants with strong dirt absorbing and reducing capacities are planted at the top of the tank body II per square meter, and the plant varieties include but are not limited to canna, thalictrum ramosissimum, cattail, reed and/or strelitzia reginae.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the water distribution pipes are large-resistance water distribution pipes.
The utility model has the advantages that: the in-situ cleaning composite type ecological filter tank is suitable for rural domestic sewage treatment, and can realize uniform water distribution, delay filter material blockage and reduce the filter material cleaning difficulty to the maximum extent on the basis of realizing high-efficiency sewage treatment, thereby greatly reducing the capital construction cost, reducing the operation and maintenance cost and realizing high-efficiency and stability of the ecological filter tank.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a two-grid hydrolysis primary sedimentation tank;
FIG. 3 is a schematic structural view of a three-grid hydrolysis primary sedimentation tank;
FIG. 4 is a schematic structural view of a working state of a tank body I;
FIG. 5 is a schematic structural view of an emptying state of a tank body I;
FIG. 6 is a schematic structural view of the tank body II in an operating state;
FIG. 7 is a schematic view of water flow connection structures of tank body I and tank body II.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in figures 1 and 7, the utility model relates to a compound ecological filter is washd to normal position that is suitable for rural domestic sewage treatment, its characterized in that: the ecological filter tank comprises a hydrolysis primary sedimentation tank 1, a tank body I2 and a tank body II3, sewage enters the hydrolysis primary sedimentation tank 1 for pretreatment, then enters the tank body I2, enters the tank body II3 after sewage receiving treatment of the tank body I2, and is discharged after advanced treatment of the tank body II 3;
as shown in fig. 2 and 3, the hydrolysis primary sedimentation tank 1 comprises a plurality of compartments, and at least comprises one compartment with a sand hopper at the bottom and at least comprises one compartment with a mud hopper at the bottom; the water inlet is positioned at the top of the first compartment, and the water outlet is positioned at the top of the last compartment;
as shown in fig. 4 and 5, the tank body I2 comprises a tank body I water inlet pipe 21, a tank body I water distribution pipe 27, a light filler 26, a plant fixing groove 24 and a tank body I water outlet pipe 22; a water inlet pipe 21 of the tank body I is communicated with a water distribution pipe 27 of the tank body I and is positioned at the bottom of the tank body I2, and water enters the tank body I2 through the water inlet pipe 21 of the tank body I and the water distribution pipe 27 of the tank body I; the light filler 26 is made of organic materials or porous ceramsite and is placed in the middle layer of the tank body I2, and can float upwards along with the water level; a plurality of plant fixing grooves 24 are positioned at the top of the tank body I2, and a water outlet pipe 22 of the tank body I is positioned at the side surface of the top of the tank body I2;
as shown in fig. 6, the tank body II3 includes a tank body II water inlet pipe 31, a tank body II water distribution pipe 33, heavy packing and a tank body II water outlet pipe 32; the water inlet pipe 31 of the tank body II is communicated with the water distribution pipe 33 of the tank body II and is positioned at the top of the tank body II3, and water enters the tank body II3 through the water inlet pipe 31 of the tank body II and the water distribution pipe 33 of the tank body II; the heavy filler is positioned in the middle layer of the tank body II3, and the water outlet pipe 32 of the tank body II is positioned on the side surface of the top of the tank body II 3.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the hydrolysis primary sedimentation tank 1 is a 2-compartment tank with the volume ratio of 1:1, and the bottoms of the hydrolysis primary sedimentation tank and the hydrolysis primary sedimentation tank are communicated with each other; a first grit chamber 14a is arranged at the bottom of the first compartment, and the first grit chamber 14a is of a trapezoidal section; the height of the sand baffle plate I13 a is 50-80 cm, the sand baffle plate I is arranged close to the tail end of the sand settling tank I14 a and is 0.3-0.6 m away from the partition plate of the compartment; the bottom of the second compartment is provided with an overflow slit and/or a weir; the sludge hopper 15a is positioned at the bottom of the second compartment, and a sludge discharge pipe is arranged at the bottom.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the hydrolysis primary sedimentation tank 1 is a 3-compartment tank, and the volume ratio of the 3-compartment tank to the water flow direction is 3:3: 4; a second grit chamber 14b is arranged at the bottom of the first compartment, and the second grit chamber 14b is of a trapezoidal section; the height of the second sand baffle 13b is 50-80 cm, the second sand baffle is arranged close to the tail end of the first grit chamber 14a and is 0.3-0.6 m away from the partition board of the first compartment, and the bottom of the first compartment is communicated with the bottom of the second compartment; the bottom of the second compartment is provided with an overflow slit and/or a weir; the first sludge hopper 15b is positioned at the bottom of the second compartment, and a sludge discharge pipe is arranged at the bottom; the third compartment is communicated with the top of the second compartment, a guide plate 17b is arranged at the communication port of the third compartment, and an overflowing seam and/or a weir are/is arranged at the bottom of the third compartment; the second sludge hopper 16b is positioned at the bottom of the third compartment, and a sludge discharge pipe is arranged at the bottom.
According to the in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment, a plurality of plant fixing grooves 24 in a tank body I2 are fixed by support rods 23 and are uniformly distributed at the top of the tank body I2, and the plant fixing grooves are circular or square grid baskets with the inner diameter of 200-300 mm and are internally provided with gravel or pebble fillers; and aquatic plants with strong dirt absorbing and reducing capacity such as canna, thaliana, cattail, reed and/or strelitzia are planted in the plant fixing groove 24.
The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment is characterized in that the tank body I2 further comprises a water outlet collecting tank 25, the water outlet collecting tank 25 is located at the top end of the tank body and is communicated with a water outlet pipe 22 of the tank body I, the water outlet collecting tank 25 is a rectangular tank, the depth of the rectangular tank ranges from 300mm to 500mm, the width of the rectangular tank ranges from 300mm to 500mm, and the length of the rectangular tank equals to the width of the rectangular tank.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the tank body I2 further comprises a quick emptying pipe with a pipe diameter not less than 300mm, and the quick emptying pipe is used for quickly discharging water in the tank body I2 and has a cleaning effect on filter materials.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the heavy filler is arranged in three layers, namely sand 34, gravel 35 and rock lumps 36 from top to bottom, and the particle size is gradually increased from top to bottom; the thickness ratio of the three layers is 1:1:2, and the particle sizes of the three layers can be selected respectively: 2-5 mm, 5-10 mm and 10-20 mm.
The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment is characterized in that the tank body II3 further comprises a water outlet collecting tank, the water outlet collecting tank is located at the bottom end of the tank body and is a rectangular tank, a tank bottom plate is lower than a tank end bottom plate by 200-400 mm and is used for water outlet falling flow, the width of the tank is 300-500 mm, and the length of the tank is equal to the width of the tank.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that at least 4 aquatic plants with strong dirt absorbing and reducing capacities are planted at the top of the tank body II3 per square meter, and the plant varieties include but are not limited to canna, thalictrum ramosissimum, cattail, reed and/or strelitzia reginae.
The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that the water distribution pipes are large-resistance water distribution pipes.
Each part design point
1. Hydrolysis primary settling tank
The hydrolysis primary sedimentation tank is a pretreatment unit of the treatment system, the quality of the treatment effect of the hydrolysis primary sedimentation tank has great influence on the subsequent ecological filter tank unit, and the hydrolysis primary sedimentation tank is the key for determining the stability and long-term operation of the hydrolysis primary sedimentation tank. The design key points are as follows: the size is as follows: calculating according to the water quota of the village household register population, wherein the water depth is taken as a priority control factor, and the water depth can be 1.5-3.0 m, the length-width ratio is 3-5: 1, and the width-depth ratio is 0.5-2: 1; hydraulic retention time: allowing part of organic matters to have anaerobic digestion effect for 8-24 h; thirdly, separation: generally, the device can be divided into 2-3 compartments, wherein when the 2 compartments are used, the volume ratio is preferably 1:1, water is fed from the top, and water is discharged from the top; when 3 compartments are arranged, the ratio of each compartment to the water flow direction is preferably 3:3:4, water enters from the bottom and exits from the top; fourthly, the overflow seam (weir): the height of the bottom overflowing seam is 5-10 cm; the top weir can be a triangular sawtooth weir or a small-hole weir, and the water head on the weir is 5-10 mm; fifthly, a grit chamber: the grit chamber is a trapezoidal section, the depth is 0.5-0.8 m, and the slope coefficient is 0.8-1.5: 1; the height of the sand baffle is 50-80 cm, and the sand baffle is close to the tail end of the sand settling tank and is 0.3-0.6 m away from the partition plate of the compartment; sixthly, sludge bucket: the isosceles triangle section is positioned at the bottom of the No. 2 or No. 3 compartment, the vertex angle is 60-90 degrees, the height is 0.5-1.0 m, and the bottom is provided with a sludge discharge pipe; removing sand: pumping sand by a sand pump at regular intervals; discharging the mud: the sludge is collected by utilizing the opening of the sludge discharge pipe at the bottom, and the sludge is pressed out of the pool by utilizing the gravity water pressure, the diameter of the sludge discharge pipe is not less than 100mm, and the diameter of the collecting pipe is not less than 60 mm.
2. Cell body I
Efficient storage of tank body I as whole treatment systemThe quick cleaning and recovery of the filter material of the sewage unit play a decisive role in ensuring the stable and long-term operation of the system. The design key points are as follows: : the flow direction of water flow is as follows: upward flow, wherein the flow rate can be 0.5-2 mm/s; secondly, a water distribution system: in order to avoid system blockage, a high-resistance water distribution pipe can be adopted; ③ the total height of the tank body: 1500-2000 mm, wherein the protection height is 300-500 mm, the filter material filling height is 700-900 mm, the water distribution area height is 200-300 mm, and the sludge discharge hopper height is 300 mm; and fourthly, filling: light fillers, i.e. having a density of less than 1.0g/cm3Can float on water; a water outlet collecting tank: the rectangular groove is positioned at the top end of the tank body, the groove depth is 300-500 mm, the groove width is 300-500 mm, and the groove length is equal to the tank width; sixthly, water outlet weir: the weir bottom is flush with the water level of normal operation, and the weir water head is not more than 50mm, so that the filler loss caused by suction is avoided; and the water outlet pipe is flush with the bottom of the water outlet tank, so that water accumulation in the tank is avoided, and the pipe diameter is not suitable to be smaller than 100 mm. Eighthly, quickly emptying a pipe, wherein the pipe diameter is not less than 300mm, and the quick emptying pipe is used for quickly releasing water in the pool body I to play a role in cleaning the filter material; ninthly, plant fixing groove: the top of the support is a circular or square grid basket with the inner diameter of 200-300 mm, and is internally provided with fillers such as gravel or pebbles. Selecting the plants in the R: according to local conditions, selecting aquatic plants with strong dirt absorbing and reducing capabilities: such as canna, Zaulihua, Typha, Phragmites communis, and strelitzia reginae.
3. Pool body II
The pool body II is taken as an advanced treatment unit of the whole treatment system, mainly plays roles of advanced purification, denitrification and dephosphorization on water quality, and provides guarantee and support for the purification capacity of the system. The design key points are as follows: the flow direction of water flow is as follows: downward flow; secondly, a water distribution system: in order to improve the uniformity of water distribution, a large-resistance water distribution pipe is adopted, and water treated by the tank body I is distributed from the large-resistance water distribution pipe and uniformly distributed on the surface of the filler on the upper part of the tank body II; ③ the total height of the tank body: 1200-1500 mm, wherein the protection height is 300-500 mm, the filter material filling height is 600-800 mm, the bottom plate slope direction water flow direction is 1-2%, the water distribution area height is 200-300 mm, and the sludge discharge hopper height is 300 mm; and fourthly, filling: ordinary gravel, rock block, sand and stone, etc. are graded according to three layers, the particle size is gradually increased from top to bottom, the thickness of the three layers is 1:1:2, and the particle sizes of the three layers can be respectively selected: 2-5 mm, 5-10 mm and 10-20 mm; a water outlet collecting tank: the bottom plate of the rectangular groove is 200-400 mm lower than the bottom plate at the tail end of the tank body and is used for water outlet and falling flow, the width of the groove is 300-500 mm, and the length of the groove is equal to the width of the tank; the water outlet pipe of the pool body is flush with the bottom plate of the pool, the water in the urinal is discharged, and the pipe diameter is not smaller than 100 mm. Seventhly, the plant cultivation density: not less than 4 plants per square meter are planted. Selecting plants: the water plants can be the same as or different from the pond I, and the water plants with strong dirt absorbing and reducing capacities can be selected according to local conditions: such as canna, Zaulihua, Typha, Phragmites communis, and strelitzia reginae.
4. Light filler
The light filler is only used in the tank body I, and the tank body II is not suitable for use from the viewpoint of saving cost. The light filler is quickly cleaned, so that the problem of blockage of the artificial wetland technology widely applied at present is fundamentally avoided. The design key points are as follows: firstly, the artificial filler is preferably made of organic materials and porous ceramsite with the density being slightly less than 1.0g/cm3The material of (a); secondly, the particle size of the filler is preferably 5-15 mm; the shape of the filler can be selected from spherical, granular, blocky and the like; fourthly, the thickness of the filler is not suitable to be less than 700 mm; the grain size grading of the filler is as follows: homogeneous gradation, i.e. Kd80/Kd10<2.0. Sixthly, after the filler is operated for a period of time, the filler can be rapidly drained through the emptying pipe, so that friction is generated among filler particles, the filler is purified, and water is repeatedly filled and drained for at least 3 times in the process.
5. Plant fixing groove
In the light-weight filler pond I, due to the instability of the filler, corresponding facilities must be provided for the cultivation and fixing of plants to ensure the smooth growth of the plants. The design key points are as follows: top fixing groove, shape: a circular or square mesh basket; materials: stainless steel, organic composite materials; inner diameter or side length: 200-300 mm; height: 200-300 mm; supporting the bottom support rod: shape: a round or square column; materials: steel reinforced concrete or organic composite materials; diameter or side length: 50-100 mm; height: 700-800 mm; filling materials in the groove: heavy filter material with density greater than 1.0g/cm3Two-stage grading, wherein the upper layer of gravel and the lower layer of gravel are 1:1 in height; the particle size of the gravel is 5-10 mm, and the particle size of the pebbles is 10-20 mm; the groove rod is connected:a channel steel slide rail with the width of 30-50 mm; bolt connection: and embedding the flat steel at the top of the supporting rod, welding the flat steel at the bottom of the fixing groove, and connecting the flat steel and the fixing groove through a screw hole by using a bolt.
6. Heavy filler
The heavy filler has high density, high head loss of in-situ cleaning and high energy consumption, so that the heavy filler is only used for the advanced treatment of the system to reduce the possibility of containing the pollutants, greatly prolong the operation period, and ensure that the operation period can reach 10 years once, thereby solving the technical problem of frequent overturn and washing of the artificial wetland in the similar process and greatly reducing the operation and maintenance cost. The design key points are as follows: firstly, the filler is preferably selected from natural coarse sand, inorganic stone materials, high-density organic composite materials and the like, the density of which is slightly more than 1.0g/cm3The material of (a); secondly, the particle size of the filler is preferably selected according to the position in the filter, such as: 2-5 mm coarse sand, 5-10 mm gravel and 10-20 mm pebbles are preferably used; the shape of the filler can be selected from spherical, granular, blocky and the like; fourthly, the thickness of the packing layer is not suitable to be less than 700 mm; the grain size grading of the filler is as follows: divided into three layers, namely an upper layer, a middle layer and a lower layer, and grading Kd of each layer80/Kd10<2.0. Sixthly, the blocked filler cannot be recovered in situ after running for a period of time, and can be recovered only by backfilling after ex-situ cleaning.
7. Large-resistance water distribution pipe
The large-resistance water distribution pipe aims to ensure that the water quantity entering each part of the tank body I (or the tank body II) is as consistent as possible, and short flow and dead angles do not occur. The design key points are as follows: firstly, the pipe material of the water distribution pipe is generally made of organic composite materials, such as: PVC, PE, ABS, PPR, etc.; stainless steel tubes may also be used. The basic structure is as follows: the branch-shaped pipe is in a branch shape, the middle part of the branch-shaped pipe is provided with a main pipe, and the two sides of the branch-shaped pipe are provided with branch pipes; thirdly, the pipe diameter ratio of the main pipe to the branch pipe is not less than 3-4: 1; fourthly, the ratio of the area of the holes to the surface area of the pool body is 0.25 to 0.40 percent; the position of the hole is opened: the branch pipes of the main pipe are uniformly distributed, and the opening positions of the branch pipes are gradually compact from front to back; flow rate control: the flow velocity of the main pipe is 0.8-1.5 m/s, the inlet of the branch pipe is 1.2-2.5 m/s, and the orifice of the branch pipe is not less than 5 m/s; the position of the hole is that: the joint position of the main pipe and the branch pipe is positioned on the central line of the main pipe; the branch pipes are provided with holes at two sides in a staggered way, and the hole direction and the horizontal plane form a 45-degree downward direction.
8. Quick blow-down pipe
According to the arrangement of a high-resistance water distribution system of the filter, the pipe diameter of a main pipe is 200-400 mm, the pipe diameter of a branch pipe is 60-150 mm, and the opening of a water outlet pipe section is controlled by a butterfly valve.
The present invention is not limited to the above-mentioned best mode, and any other products similar or identical to the present invention, which can be obtained by anyone under the teaching of the present invention, all fall within the protection scope of the present invention.
Claims (10)
1. The in-situ cleaning composite ecological filter tank suitable for rural domestic sewage treatment is characterized in that: the ecological filter tank comprises a hydrolysis primary sedimentation tank (1), a tank body I (2) and a tank body II (3), sewage enters the hydrolysis primary sedimentation tank (1) for pretreatment, then enters the tank body I (2), enters the tank body II (3) after being subjected to sewage receiving treatment by the tank body I (2), and is discharged after being subjected to advanced treatment by the tank body II (3);
the hydrolysis primary sedimentation tank (1) comprises a plurality of compartments, at least one compartment with a sand hopper at the bottom and at least one compartment with a mud hopper at the bottom; the water inlet is positioned at the top of the first compartment, and the water outlet is positioned at the top of the last compartment;
the pool body I (2) comprises a pool body I water inlet pipe (21), a pool body I water distribution pipe (27), light filling materials (26), a plant fixing groove (24) and a pool body I water outlet pipe (22); a water inlet pipe (21) of the tank body I is communicated with a water distribution pipe (27) of the tank body I and is positioned at the bottom of the tank body I (2), and water enters the tank body I (2) through the water inlet pipe (21) of the tank body I and enters the tank body I (2) through the water distribution pipe (27) of the tank body I; the light filler (26) is made of organic materials or porous ceramsite, is placed in the middle layer of the tank body I (2), and can float upwards along with the water level; the plant fixing grooves (24) are positioned at the top of the tank body I (2), and the water outlet pipe (22) of the tank body I is positioned on the side surface of the top of the tank body I (2);
the pool body II (3) comprises a pool body II water inlet pipe (31), a pool body II water distribution pipe (33), heavy filler and a pool body II water outlet pipe (32); a water inlet pipe (31) of the tank body II is communicated with a water distribution pipe (33) of the tank body II and is positioned at the top of the tank body II (3), and water enters the tank body II (3) through the water inlet pipe (31) of the tank body II and enters the tank body II (3) through the water distribution pipe (33) of the tank body II; the heavy filler is positioned in the middle layer of the tank body II (3), and the water outlet pipe (32) of the tank body II is positioned on the side surface of the top of the tank body II (3).
2. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: the hydrolysis primary sedimentation tank (1) is a 2-compartment tank with the volume ratio of 1:1, and the bottoms of the hydrolysis primary sedimentation tank and the bottom of the hydrolysis primary sedimentation tank are communicated with each other; a first grit chamber (14a) is arranged at the bottom of the first compartment, and the first grit chamber (14a) has a trapezoidal section; the height of the first sand baffle (13a) is 50-80 cm, the first sand baffle is tightly attached to the tail end of the first sand settling tank (14a) and is 0.3-0.6 m away from the partition board of the compartment; the bottom of the second compartment is provided with an overflow slit and/or a weir; the sludge hopper (15a) is positioned at the bottom of the second compartment, and a sludge discharge pipe is arranged at the bottom.
3. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: the hydrolysis primary sedimentation tank (1) is a 3-compartment tank, and the volume ratio of the 3-compartment tank to the water flow direction is 3:3: 4; a second grit chamber (14b) is arranged at the bottom of the first compartment, and the second grit chamber (14b) has a trapezoidal section; the height of the second sand baffle (13b) is 50-80 cm, the second sand baffle is tightly attached to the tail end of the second grit chamber (14b) and is 0.3-0.6 m away from the partition board of the compartment, and the bottom of the first compartment is communicated with the bottom of the second compartment; the bottom of the second compartment is provided with an overflow slit and/or a weir; the first sludge hopper (15b) is positioned at the bottom of the second compartment, and a sludge discharge pipe is arranged at the bottom; the third compartment is communicated with the top of the second compartment, a guide plate (17b) is arranged at the communication port of the third compartment, and an overflowing seam and/or a weir are/is arranged at the bottom of the third compartment; the second sludge hopper (16b) is positioned at the bottom of the third compartment, and a sludge discharge pipe is arranged at the bottom.
4. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: a plurality of plant fixing grooves (24) in the tank body I (2) are fixed by support rods (23) and are uniformly distributed at the top of the tank body I (2), and the plant fixing grooves are circular or square grid baskets with the inner diameter of 200-300 mm and are internally provided with gravel or pebble filling materials; and aquatic plants with strong dirt absorbing and reducing capabilities such as canna, thaliana, cattail, reed and/or strelitzia are planted in the plant fixing groove (24).
5. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: cell body I (2) still include a water collecting tank (25), and a water collecting tank (25) is located cell body top and cell body I outlet pipe (22) intercommunication, and a water collecting tank (25) is the rectangular channel, and the groove depth 300 ~ 500mm, groove width 300 ~ 500mm, and the groove length equals with the pond width.
6. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: the filter tank is characterized in that the tank body I (2) further comprises a quick emptying pipe with a pipe diameter not less than 300mm, and the quick emptying pipe is used for quickly discharging water in the tank body I (2) and cleaning the filter material.
7. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: the heavy filler is arranged in three layers, namely sand (34), gravel (35) and lump stone (36) from top to bottom, and the particle size is gradually increased from top to bottom; the thickness ratio of the three layers is 1:1:2, and the particle sizes of the three layers can be selected respectively: 2-5 mm, 5-10 mm and 10-20 mm.
8. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: cell body II (3) still include the play water collecting vat, go out the water collecting vat and be located the cell body bottom, for the rectangular channel, the cell bottom plate is less than cell body terminal bottom plate 200 ~ 400mm for go out the water and fall and flow, groove width 300 ~ 500mm, the groove length equals with the pond width.
9. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: at least 4 aquatic plants with strong dirt absorbing and reducing capabilities are planted at the top of the pool body II (3) per square meter, and the plant varieties comprise but are not limited to canna, thaliana repens, cattail, reed and/or strelitzia.
10. The in-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment according to claim 1, characterized in that: the water distribution pipes are all high-resistance water distribution pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120588032.3U CN215049060U (en) | 2021-03-23 | 2021-03-23 | In-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120588032.3U CN215049060U (en) | 2021-03-23 | 2021-03-23 | In-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215049060U true CN215049060U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120588032.3U Expired - Fee Related CN215049060U (en) | 2021-03-23 | 2021-03-23 | In-situ cleaning composite type ecological filter tank suitable for rural domestic sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215049060U (en) |
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2021
- 2021-03-23 CN CN202120588032.3U patent/CN215049060U/en not_active Expired - Fee Related
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Granted publication date: 20211207 |