CN211712873U - Artificial wetland purification system for treating rural domestic sewage - Google Patents
Artificial wetland purification system for treating rural domestic sewage Download PDFInfo
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- CN211712873U CN211712873U CN201921974737.8U CN201921974737U CN211712873U CN 211712873 U CN211712873 U CN 211712873U CN 201921974737 U CN201921974737 U CN 201921974737U CN 211712873 U CN211712873 U CN 211712873U
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Abstract
The utility model discloses an artificial wetland purification system for treating rural domestic sewage, which comprises an underground grating well, an underground anoxic tank and a subsurface flow type artificial wetland, wherein the water outlet of the underground grating well is connected with the water inlet of the underground anoxic tank, the water outlet of the underground anoxic tank is connected with the water inlet of the subsurface flow type artificial wetland through a riser, the subsurface flow type artificial wetland also comprises a return port, and the return port of the subsurface flow type artificial wetland is connected with the water inlet of the underground anoxic tank through a return pipe; the device also comprises an air blower arranged between the underground anoxic tank and the subsurface flow type artificial wetland; one outlet of the air blower is connected with the underground anoxic tank through an air stripping pipe, the other outlet of the air blower is connected with an aeration main pipe in the subsurface flow type artificial wetland through an aeration pipe, the air stripping pipe and the lifting pipe extend into the underground anoxic tank side by side, and an air outlet of the air stripping pipe extends into the lifting pipe.
Description
Technical Field
The utility model relates to a handle rural domestic sewage's constructed wetland clean system belongs to sewage treatment technical field.
Background
Along with the rapid development of rural economy, the living standard of people is continuously raised, and the water quantity and the complexity of components of rural domestic sewage are improved. Under the background, the unreasonable discharge phenomenon of the rural domestic sewage can directly cause pollution to the environment on one hand, is not beneficial to the ecological balance of the rural environment, and on the other hand, the polluted environment can generate great threat to the health of human beings.
Rural domestic sewage mainly comes from washing sewage, kitchen sewage, lavatory sewage and other sewage, and because the composition characteristics and the water yield of different types of sewage are very different, the quality of water of rural domestic sewage is unstable, can show different water quality characteristics in different periods of time. On the whole, the rural domestic sewage has more organic matters, nitrogen, phosphorus and other nutrient elements and better biodegradability. Meanwhile, the rural domestic sewage discharge has the characteristics of small water quantity, wide dispersion range, intermittent discharge, large instantaneous change amplitude and the like.
Compared with towns and most rural areas, the system is lack of a perfect sewage pipe network and does not have corresponding water treatment facilities and infrastructure, and the rural sewage collection rate is low. And the weak economic foundation of the rural area and the complex maintenance and operation of water treatment facilities are also a big problem of rural sewage treatment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the technical problem that an artificial wetland clean system of processing rural domestic sewage is provided, this clean system with air stripping and aeration integration, effectively reduced the energy consumption of system.
The technical scheme of the utility model is that:
an artificial wetland purification system for treating rural domestic sewage comprises an underground grating well, an underground anoxic tank and a subsurface flow type artificial wetland, wherein a water outlet of the underground grating well is connected with a water inlet of the underground anoxic tank; the device also comprises an air blower arranged between the underground anoxic tank and the subsurface flow type artificial wetland; one outlet of the air blower is connected with the underground anoxic tank through an air stripping pipe, the other outlet of the air blower is connected with an aeration main pipe in the subsurface flow type artificial wetland through an aeration pipe, the air stripping pipe and the lifting pipe extend into the underground anoxic tank side by side, and an air outlet of the air stripping pipe extends into the lifting pipe.
Wherein, be equipped with two baffles in the secret oxygen deficiency pond, the secret oxygen deficiency pond falls into three compartment through two baffles, is first compartment, second compartment and third compartment respectively, all is provided with the through-hole of two adjacent compartments of intercommunication on two baffles.
Wherein, the three compartments are all filled with suspended ball biological fillers, the diameter of the biological fillers is 80mm, and the stacking volume of the biological fillers accounts for 30 percent of the effective volume of the anoxic pond.
The subsurface flow type constructed wetland comprises a water inlet area, a treatment area and a water outlet area, wherein a perforated tracery wall I is arranged between the water inlet area and the treatment area, and a perforated tracery wall II is arranged between the treatment area and the water outlet area; the overflow area is further included in the water inlet area, the water inlet end of the overflow area is connected with the lifting pipe, the water outlet end of the overflow area is connected with the perforated pipe through the connecting pipe, the rectifying plate and the triangular weir plate are arranged in the overflow area, water is uniformly distributed into the water inlet area through the triangular weir plate in the overflow area and the perforated pipe below the overflow area, and the water in the water inlet area uniformly enters the treatment area through the perforated tracery wall I.
Wherein, the treatment area of the subsurface flow type artificial wetland is internally provided with an aeration main pipe and an aeration branch pipe connected with the aeration main pipe, the aeration branch pipe is arranged in an I shape, and the air inlet end of the aeration main pipe is connected with an air blower through an aeration pipe.
Wherein, a mixed filler layer doped with gypsum is also arranged in the treatment area of the subsurface flow type artificial wetland.
Has the advantages that: the utility model discloses constructed wetland clean system has combined underground grid pond (well), secret oxygen deficiency pond and undercurrent formula constructed wetland, through the air pump of air stripping and oxygenating combined use, when effectively getting rid of suspended solid, organic matter and nutrients such as nitrogen phosphorus in the domestic sewage, greatly reduced the energy consumption, and the quality of the effluent water is good, can satisfy rural domestic sewage's processing needs; compared with the prior art, the utility model discloses the system sets up the air pump between secret oxygen deficiency pond and undercurrent formula constructed wetland, and a pump is dual-purpose, has both given constructed wetland the oxygenation again when sewage from oxygen deficiency pond air lift to constructed wetland to both reduced the energy consumption that the system promoted, improved constructed wetland's sewage treatment efficiency again.
Drawings
FIG. 1 is a top view of the constructed wetland purification system of the present invention;
FIG. 2 is a side view of the constructed wetland purification system of the present invention;
FIG. 3 is a schematic diagram of the structure of an underground anoxic tank;
FIG. 4 is a schematic illustration of the connection of the stripper tube to the riser;
fig. 5 is a schematic diagram of the structure of the overflow area.
Detailed Description
The technical solution of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-5, the constructed wetland purification system for treating rural domestic sewage of the utility model comprises an underground grating well 1, an underground anoxic tank 2 and a subsurface constructed wetland 3 which are connected in sequence, wherein the underground grating well 1 and the underground anoxic tank 2 are arranged below the ground, and the subsurface constructed wetland 3 is arranged above the ground; the underground grating well 1 is internally provided with a grating 4, and the underground grating well 1 removes large suspended matters and impurities in the inlet water through the grating 4; the water inlet of an underground grid well 1 is connected with a domestic sewage discharge pipeline, the water outlet of the underground grid well 1 is connected with the water inlet 18 of an underground anoxic pool 2 through a drain pipe 40, the water outlet of the underground anoxic pool 2 is connected with the water inlet 20 of a subsurface flow type artificial wetland 3 through a riser pipe 5, the subsurface flow type artificial wetland 3 also comprises a return port 6, the return port 6 of the subsurface flow type artificial wetland 3 is connected with the water inlet 18 of the underground anoxic pool 2 through a return pipe 7 (the return pipe 7 is connected into the drain pipe 40), and the return sewage of the subsurface flow type artificial wetland 3 and the water outlet of the underground grid well 1 flow into the underground anoxic pool 2 together at a flow ratio; the artificial wetland purification system for treating rural domestic sewage of the utility model also comprises an air blower 8 arranged between the underground anoxic tank 2 and the subsurface flow type artificial wetland 3; one of the gas outlets of the air blower 8 is connected with the underground anoxic tank 2 through the gas stripping pipe 9, the other gas outlet of the air blower 8 is connected with the main aeration pipe 11 in the subsurface flow type artificial wetland 3 through the aeration pipe 10, the gas stripping pipe 9 and the lifting pipe 5 extend into the underground anoxic tank 2 side by side, the gas outlet of the gas stripping pipe 9 extends into the water inlet of the lifting pipe 5, and the extending distance is 6-8 mm. The blower 8 has three outlets, namely a gas path, an artificial wetland aeration path and an emptying path, and each outlet is controlled by a valve. The water outlet of the underground anoxic tank 2 enters the artificial wetland 3 and is realized by the gas stripping device, on one hand, the density difference of liquid inside and outside the liquid pipe can be utilized to promote, and on the other hand, the dissolved oxygen concentration of the water inlet of the artificial wetland can be increased. The utility model discloses in the system, underground grid well 1 is arranged in intercepting great suspended solid and impurity in the sewage, and underground oxygen deficiency pond 2 is used for domestic sewage to carry out partial COD degradation, and carry out the anaerobism denitrification denitrogenation to constructed wetland backward flow sewage and handle, thereby improve the clearance of the total nitrogen of system, the well rear portion of undercurrent formula constructed wetland 3 is provided with the mixed packing layer 28 that is doped with the gypsum, can carry out chemical dephosphorization, the plant 31 that 3 upper strata of undercurrent formula constructed wetland were planted also can purify the phosphorus of detaching some sewage through the absorption. The utility model discloses constructed wetland clean system adopts an air pump (air-blower) to promote the power source of perforation aeration pipe delivery air in sewage and the constructed wetland as the air stripping device, improves system's sewage treatment efficiency when reducing power consumption.
Wherein, be equipped with two baffles 12 in the secret oxygen deficiency pond 2, secret oxygen deficiency pond 2 falls into three compartment through two baffles 12, be first compartment 13 respectively, second compartment 14 and third compartment 15, all be provided with the through-hole 16 of two adjacent compartments of intercommunication on two baffles 12, the water inlet 18 of secret oxygen deficiency pond 2 is located the upper portion of first compartment 13 cavity, baffle 12 between first compartment 13 and the second compartment 14 is equipped with through-hole 16 in its lower part, baffle 12 between second compartment 14 and the third compartment 15 is equipped with through-hole 16 above that, thereby realize that rivers flow for baffling formula in secret oxygen deficiency pond 2, effectively avoid short-term flow and blind spot, the dwell time of extension sewage in the oxygen deficiency pond. The three compartments are all filled with suspended ball biological fillers 17, the diameter of the biological fillers is 80mm, and the stacking volume of the biological fillers accounts for 30 percent of the effective volume of the anoxic pond 2. The biological filler is used as a growth carrier of microorganisms.
The subsurface flow type constructed wetland 3 comprises a water inlet area 22, a treatment area 23 and a water outlet area 24, wherein the water inlet area 22 is provided with a water inlet 20, the water outlet area 24 is provided with a water outlet 21 and a return port 6, a perforated tracery wall I26 is arranged between the water inlet area 22 and the treatment area 23, and a perforated tracery wall II27 is arranged between the treatment area 23 and the water outlet area 24; the sewage lifted to the subsurface flow type artificial wetland 3 by the underground anoxic pond 2 enters a water inlet area 22 of the subsurface flow type artificial wetland 3 through a water inlet 20, the water inlet area 22 comprises an overflow area 29, the water inlet 20 is positioned in the overflow area 29, the water inlet end (namely the water inlet 20) of the overflow area 29 is connected with a lifting pipe 5, the water outlet end of the overflow area 29 is connected with a perforated pipe 25 through a connecting pipe 35, a rectifying plate 36 and a triangular weir plate 37 are arranged in the overflow area 29, the triangular weir plate 37 can control the water flow entering the subsurface flow type artificial wetland 3, the inlet water is uniformly distributed into the water inlet area 22 through the triangular weir plate 37 in the overflow area 29 and the perforated pipe 25 below the overflow area 29, the water in the water inlet area 22 uniformly enters the treatment area 23 through a perforated tracery wall I26, namely the perforated pipe 25 and the perforated tracery wall I26 can uniformly distribute the sewage, and further improve the treatment effect.
The subsurface flow type artificial wetland 3 is internally provided with an aeration main pipe 11 and an aeration branch pipe 19 connected with the aeration main pipe 11, the aeration main pipe 11 is used as an air supply source of the aeration branch pipe 19, the aeration main pipe 11 is arranged at one side above the subsurface flow type artificial wetland 3, the air inlet end of the aeration main pipe 11 is connected with an air blower 8 through an aeration pipe 10, the aeration branch pipe 19 is arranged in an I shape, and the aeration branch pipe 19 vertically extends into the lower part of the subsurface flow type artificial wetland 3 and improves the uniformity and the quantity of air input in a perforated pipe mode. The utility model discloses an aeration pipe is the perforation aeration pipe, and the perforation aeration pipe can provide the required oxygen volume of oxidation ammonia nitrogen and BOD for the constructed wetland.
The subsurface flow type artificial wetland 3 is also internally provided with a gypsum-doped mixed filler layer 28, the gypsum-doped mixed filler layer 28 is arranged at the middle rear part of the subsurface flow type artificial wetland 3 along the water flow direction, and the gypsum-doped mixed filler layer 28 improves the phosphorus removal effect through chemical phosphorus removal. Namely, the gypsum is paved at the middle and rear parts of the artificial wetland, so that the form of phosphorus after the artificial wetland is fed with water can be mostly converted into the form of orthophosphate which can react with the gypsum, and the high efficiency of chemical phosphorus removal is ensured. The water outlet 21 discharges the water treated by the artificial wetland purification system to the nearest river channel, the return port 6 discharges the effluent treated by the subsurface flow artificial wetland 3 and the effluent of the underground grid well 1 into the underground anoxic tank 2 according to the flow ratio of 3: 1, and the anaerobic denitrification process is carried out again, so that the total nitrogen removal rate of the system is improved.
A planting area can be arranged in the treatment area 23 of the subsurface constructed wetland 3 and comprises a filler 30 and planted plants 31.
The system of the utility model treats rural domestic sewage, and delivers the rural domestic sewage to the underground grid well 1 after being collected by a village laying sewage pipe network, and the underground grid well 1 intercepts larger suspended matters and impurities in the rural domestic sewage, thereby ensuring the normal work of subsequent equipment and reducing the probability of blockage of the constructed wetland; the sewage enters an underground anoxic tank 2 through an underground grille well 1 and then flows automatically, on one hand, the degradation of partial COD is completed in the underground anoxic tank 2, on the other hand, the sewage reacts with nitrifying liquid flowing back from the subsurface flow type artificial wetland 3 to carry out denitrification, and the total nitrogen removal rate of the system is improved; the effluent of the underground anoxic tank 2 is lifted to the subsurface flow type artificial wetland 3 by a lifting pipe 5, meanwhile, a perforated aeration pipe is arranged in the subsurface flow type artificial wetland 3, the subsurface flow type artificial wetland 3 is paved with conventional fillers such as zeolite, bricks, ceramsite, aerated concrete block and other media, and is also added with phosphorus removal materials such as gypsum and the like, the phosphorus removal is ensured while organic matters and ammonia nitrogen are removed intensively, and the effluent part of the subsurface flow type artificial wetland 3 flows back to the front end of the underground anoxic tank 2 for further nitrogen removal.
The utility model discloses constructed wetland clean system's CODcrThe removal rate is 0.85, BOD5The removal rate was 0.94, the ammonia nitrogen removal rate was 0.8, the TN removal rate was 0.7, the TP removal rate was 0.83, and the SS removal rate was 0.83. Compare in ordinary constructed wetland, the utility model discloses an constructed wetland backward flow improves the clearance of constructed wetland system total nitrogen to 0.7, and ordinary undercurrent constructed wetland is not more than 0.5 to total nitrogen's clearance generally. Among the prior art, the ton water power consumption of good oxygen sewage treatment process is 0.5 degree at least, and under the prerequisite that reaches the same better water treatment effect even, the utility model discloses constructed wetland clean system ton water power consumption is less than 0.3 degree to no other medicament consumption, consequently the utility model discloses the running cost that the system was compared in other sewage treatment mode is lower.
Claims (6)
1. The utility model provides a handle rural domestic sewage's constructed wetland clean system which characterized in that: the subsurface flow type constructed wetland comprises an underground grating well, an underground anoxic tank and a subsurface flow type constructed wetland, wherein a water outlet of the underground grating well is connected with a water inlet of the underground anoxic tank, a water outlet of the underground anoxic tank is connected with a water inlet of the subsurface flow type constructed wetland through a lifting pipe, the subsurface flow type constructed wetland also comprises a backflow port, and the backflow port of the subsurface flow type constructed wetland is connected with the water inlet of the underground anoxic tank through a backflow pipe; the device also comprises an air blower arranged between the underground anoxic tank and the subsurface flow type artificial wetland; one outlet of the air blower is connected with the underground anoxic tank through an air stripping pipe, the other outlet of the air blower is connected with an aeration main pipe in the subsurface flow type artificial wetland through an aeration pipe, the air stripping pipe and the lifting pipe extend into the underground anoxic tank side by side, and an air outlet of the air stripping pipe extends into the lifting pipe.
2. The constructed wetland purification system for treating rural domestic sewage according to claim 1, characterized in that: be equipped with two baffles in the secret oxygen deficiency pond, the secret oxygen deficiency pond falls into three compartment through two baffles, is first compartment, second compartment and third compartment respectively, all is provided with the through-hole of two adjacent compartments of intercommunication on two baffles.
3. The constructed wetland purification system for treating rural domestic sewage according to claim 2, characterized in that: the three compartments are all filled with suspended ball biological fillers, the diameter of the biological fillers is 80mm, and the stacking volume of the biological fillers accounts for 30 percent of the effective volume of the anoxic tank.
4. The constructed wetland purification system for treating rural domestic sewage according to claim 1, characterized in that: the subsurface flow type constructed wetland comprises a water inlet area, a treatment area and a water outlet area, wherein a perforated tracery wall I is arranged between the water inlet area and the treatment area, and a perforated tracery wall II is arranged between the treatment area and the water outlet area; the overflow area is further included in the water inlet area, the water inlet end of the overflow area is connected with the lifting pipe, the water outlet end of the overflow area is connected with the perforated pipe through the connecting pipe, the rectifying plate and the triangular weir plate are arranged in the overflow area, water is uniformly distributed into the water inlet area through the triangular weir plate in the overflow area and the perforated pipe below the overflow area, and the water in the water inlet area uniformly enters the treatment area through the perforated tracery wall I.
5. The constructed wetland purification system for treating rural domestic sewage according to claim 4, characterized in that: the treatment area of the subsurface flow type artificial wetland is internally provided with an aeration main pipe and aeration branch pipes connected with the aeration main pipe, the aeration branch pipes are arranged in an I shape, and the air inlet end of the aeration main pipe is connected with an air blower through an aeration pipe.
6. The constructed wetland purification system for treating rural domestic sewage according to claim 4, characterized in that: a mixed filler layer doped with gypsum is also arranged in the treatment area of the subsurface flow type artificial wetland.
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| CN201921974737.8U CN211712873U (en) | 2019-11-15 | 2019-11-15 | Artificial wetland purification system for treating rural domestic sewage |
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| CN201921974737.8U CN211712873U (en) | 2019-11-15 | 2019-11-15 | Artificial wetland purification system for treating rural domestic sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018233A (en) * | 2019-11-15 | 2020-04-17 | 南京路通工程科技有限公司 | Artificial wetland purification system for treating rural domestic sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018233A (en) * | 2019-11-15 | 2020-04-17 | 南京路通工程科技有限公司 | Artificial wetland purification system for treating rural domestic sewage |
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