CN212594474U - Rural sewage pretreatment device - Google Patents
Rural sewage pretreatment device Download PDFInfo
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- CN212594474U CN212594474U CN202021553944.9U CN202021553944U CN212594474U CN 212594474 U CN212594474 U CN 212594474U CN 202021553944 U CN202021553944 U CN 202021553944U CN 212594474 U CN212594474 U CN 212594474U
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Abstract
The utility model provides a rural sewage pretreatment device, which comprises a grid channel, a sedimentation tank connected with the grid channel, and an adjusting tank and a sludge tank connected with the sedimentation tank; a mechanical grating is arranged on the grating channel; a central cylinder is arranged in the sedimentation tank; the lower end of the central cylinder is provided with a reflecting plate; a sludge hopper is arranged at the bottom of the sedimentation tank, a sludge discharge pipe is arranged at the bottom of the sludge hopper, and the sludge discharge pipe is connected with the sludge tank; a lifting pump is arranged in the regulating tank and connected with a subsequent water purification unit; be provided with the overflow pipe on sludge impoundment upper portion, the overflow pipe is connected with the equalizing basin, and the grid canal carries out the floater to sewage, the suspended solid is got rid of, and inorganic matter and partial organic matter in the sedimentation tank removal sewage to arrange this inorganic matter and partial organic matter to sludge impoundment, lead the equalizing basin to sewage after will handling, thereby carry out follow-up purification treatment, so that in water purification treatment process, can not have silt and suspended solid to cause harmful effects to water purification treatment unit and equipment.
Description
Technical Field
The utility model relates to a sewage treatment field, more specifically relates to a sewage pretreatment device, especially relates to a rural sewage pretreatment device.
Background
The reform is open, the rural economy develops rapidly, meanwhile, because the rural population is numerous, and the environmental protection consciousness is thin, and the rural environmental pollution problem is more and more serious due to the long-term shortage of the traditional rural infrastructure construction. At present, most villages do not have a drainage system and a sewage treatment system, domestic sewage is directly discharged into rivers, pits and the like without being treated, the ecological environment of the rural areas is seriously influenced, and the health of vast rural masses and the further development of rural economy are directly threatened.
The residence mode, diet, health habit and the like of rural residents are different from those of cities, so that rural sewage has the characteristics of small and dispersed water quantity, large water quality and water quantity fluctuation and the like. Due to the lack of waste collection and transportation facilities, the rural sewage usually has a large amount of floating objects and suspended matters. Meanwhile, as a plurality of rural roads are not hardened, a large amount of silt and the like enter sewage in rainy days. Aiming at the characteristics of rural sewage, certain pretreatment must be considered for the rural sewage in the sewage treatment process, so that the normal operation of subsequent treatment units and equipment is prevented from being influenced.
Therefore, a rural sewage pretreatment device which is suitable for rural sewage treatment, can remove suspended matters and floating matters to the maximum extent and can balance water quantity and water quality is urgently needed.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a rural sewage pretreatment device, which solves the problems that the rural sewage has small and dispersed water volume, the fluctuation of water quality and water volume is large, and because of the lack of garbage collection and transportation facilities, the rural sewage usually has a large amount of floaters and suspended solids, and simultaneously, because many rural roads are not hardened, silt and the like can enter the sewage in a large amount in rainy days, and the silt and the suspended solids can influence the normal operation of subsequent treatment units and equipment in the sewage treatment process.
The utility model provides a rural sewage pretreatment device, which is characterized by comprising a grid channel, a sedimentation tank connected with the grid channel, and an adjusting tank and a sludge tank connected with the sedimentation tank;
a mechanical grating is arranged on the grating channel;
a central cylinder is arranged in the sedimentation tank; a reflecting plate is arranged at the lower end of the central cylinder;
a sludge hopper is arranged at the bottom of the sedimentation tank, a sludge discharge pipe is arranged at the bottom of the sludge hopper, and the sludge discharge pipe is connected with the sludge tank;
a lifting pump is arranged in the regulating tank and connected with a subsequent water purification unit;
an overflow pipe is arranged on the upper part of the sludge tank and is connected with the adjusting tank.
Preferably, a water inlet is also arranged on the grid ditch, and,
a guide rail is arranged at the water inlet;
and a water inlet gate is arranged on the water inlet.
Preferably, an overflow port is provided at the front of the grid channel.
Preferably, a water outlet is arranged at the tail end of the grid ditch, and,
the water outlet is connected with the inlet of the sedimentation tank through a pipeline.
Preferably, a weir trough and a water collecting trough are further provided in the settling tank, wherein,
the weir notch is a triangular weir notch.
Preferably, the central cylinder is a steel cylinder.
Preferably, the lower end of the central cylinder is in a horn shape.
Preferably, the top of the sludge discharge pipe is communicated with the atmosphere, the bottom of the sludge discharge pipe is connected with an air supply pipe, and one end of the air supply pipe, which is far away from the sludge discharge pipe, is connected with an external air source.
Preferably, an air stirring piece is arranged at the bottom of the regulating tank;
the bottom of the adjusting tank is of a slope type, one end, close to the lift pump, of the slope is low, and one end, away from the lift pump, of the slope is high.
Preferably, a sludge outlet for removing sludge is also arranged on the sludge tank.
As can be seen from the above description, the utility model provides a rural sewage pretreatment device includes the grid canal, connects the sedimentation tank of grid canal to and the equalizing basin and the sludge impoundment of connecting the sedimentation tank, the grid canal is got rid of suspended solid or floater in the sewage, the sedimentation tank is depositd sewage, with inorganic matter and partial organic matter in the sewage of getting rid of, divide sewage into the deposit (mud) and the precipitation effluent of inorganic matter and partial organic matter, and discharge mud to the sludge impoundment through the sludge bucket; introducing the precipitated effluent to a conditioning tank, wherein the sludge tank is used for storing sludge, and then removing the sludge through periodic treatment; the equalizing basin is used for carrying out the regulation of quality of water yield to settling out water to promote to follow-up water purification unit in order to carry out follow-up water purification treatment, prevent in sewage treatment process, silt and suspended solid, floater influence follow-up water purification treatment unit (module) and the normal operating of equipment.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic view of a rural sewage pretreatment device according to an embodiment of the present invention;
wherein the reference numerals include: 1. grid ditch, 2, sedimentation tank, 3, equalizing basin, 4, sludge impoundment, 5, mechanical grid, 6, artifical grid, 7, mud pipe, 8, overflow mouth, 9, elevator pump, 10, water inlet.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
Rural sewage has small and dispersed water volume, and quality of water volume fluctuation is big, and because lack rubbish collection and transportation facility, rural sewage usually has a large amount of floaters and suspended solid, simultaneously because many rural roads do not harden, causes rainy day silt etc. also can get into in a large number in the sewage treatment process, and silt and suspended solid can influence the normal operating of follow-up processing unit and equipment.
To the above problem, the utility model provides a rural sewage pretreatment device, it is right to follow will combine the figure the utility model discloses a concrete embodiment carries out detailed description.
The following description of the exemplary embodiment(s) is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 1, the utility model provides a rural sewage pretreatment device, which is used for pretreating sewage before biological purification is carried out on the sewage, removing suspended matters, floating matters and inorganic pollutants in the sewage, and preventing silt and suspended matters from influencing the normal operation of subsequent treatment units and equipment in the sewage treatment process, and comprises a grid channel 1, a sedimentation tank 2 connected with the grid channel 1, and an adjusting tank 3 and a sludge tank 4 connected with the sedimentation tank 2; it should be noted that the connection mode among the grid channel 1, the sedimentation tank 2, the adjusting tank 3 and the sludge tank 4 is not particularly limited, and the grid channel 1 is used for removing suspended matters or floating matters in the sewage; the sedimentation tank 2 is used for removing inorganic matters and partial organic matters in the sewage, such as smaller suspended matters (suspended matters which are not removed by the grid ditches) and colloids; the adjusting tank 3 is used for adjusting the quality and the quantity of the precipitated effluent and lifting the precipitated effluent to a subsequent unit for subsequent treatment, thereby preventing the occurrence of the condition that the normal operation of the subsequent treatment unit and equipment is influenced because the rural sewage is small and dispersed in water volume, the water quality and the water quantity are greatly fluctuated due to the lack of garbage collection and transportation facilities and the rural sewage usually has a large quantity of floaters and suspended matters.
In the embodiment shown in fig. 1, a water inlet 10 is provided at the front end of the grid channel 1, sewage enters the grid channel from the water inlet 10, a mechanical grid is provided on the grid channel, the mechanical grid 5 is used for removing suspended matters or floating matters in the sewage, in order to make the pretreatment device still usable when the mechanical grid 5 fails, in the embodiment, a guide rail (not shown) is further provided at the water inlet 10 at the front end of the grid channel 1, the guide rail is used for installing an artificial grid 6 when the mechanical grid 5 fails, so as to use the artificial grid as a spare grid of the mechanical grid, in the present case, the artificial grid 6 adopts a basket grid which is used as a spare grid of the mechanical grid, so as to ensure that the whole device can still normally operate even if the mechanical grid 5 fails.
As shown in fig. 1, the rural sewage pretreatment device is provided with an overflow port 8 at the front part of the grid channel 1, and the overflow port 8 is used for discharging sewage overflowing from the grid channel 1, namely, for overflowing the sewage when the water inflow is too large, so as to avoid the sewage station (where the rural sewage pretreatment device and other water purification devices are placed) from being flooded; a water outlet is arranged at the tail end of the grid channel 1 and is connected with an inlet of the sedimentation tank 2 through a pipeline, so that the sewage is led to the sedimentation tank 2 to complete the subsequent filtration of inorganic matters in the sewage.
In the embodiment shown in fig. 1, the sedimentation tank 2 is used for removing inorganic substances and a part of organic substances from sewage, and separating the sewage into sludge (inorganic substances and a part of organic substances are precipitated) and sedimentation water (sewage after sludge removal), such as smaller suspended substances (suspended substances not removed by the grid ditches) and colloids; the specific form of the sedimentation tank is not particularly limited, in the embodiment, the sedimentation tank is a vertical flow sedimentation tank, that is, sewage enters from top to bottom, and a central cylinder, a weir notch and a water collecting groove are arranged in the sedimentation tank 2; wherein, install the reflecting plate at the lower extreme of this center section of thick bamboo, this reflecting plate is used for making sewage at this sedimentation tank surface evenly distributed to make sewage evenly accomplish and deposit, do not do specific restriction to the material and the model of a center section of thick bamboo, in this embodiment, this center section of thick bamboo adopts the steel pipe section of thick bamboo, and, this center section of thick bamboo lower extreme is loudspeaker type (the loudspeaker style of upper narrow width down), so that the sewage through this center section of thick bamboo distributes more evenly after flowing into the sedimentation tank from top to bottom.
In the embodiment shown in fig. 1, the weir grooves are used for collecting the precipitated effluent after the precipitation in the precipitation tank 2 and converging the precipitated effluent into the water collection tank, the number and type of the weir grooves are not particularly limited, in this embodiment, a triangular weir groove is provided in the precipitation tank 2 and two triangular weir grooves are provided to collect the precipitated water with high efficiency, and the water collection tank is used for temporarily storing the precipitated effluent and converging the precipitated effluent into the regulating tank 3, so that the precipitated effluent is regulated in the regulating tank 2 in water quality and water quantity.
As shown in FIG. 1, the rural sewage pretreatment device is characterized in that a sludge hopper is arranged at the bottom of the sedimentation tank, a sludge discharge pipe 7 is arranged at the bottom of the sludge hopper, and the sludge discharge pipe 7 is connected with a sludge tank 4; wherein, model and the material of this sludge bucket do not do specific restriction, and in this embodiment, this sludge bucket adopts the toper fill, and this sludge bucket is used for keeping in mud to arrange mud to sludge impoundment 4 via sludge discharge pipe 7, thereby accomplish solid-liquid separation to sewage, arrange inorganic pollutant in the sewage to sludge impoundment 4, will get rid of most inorganic pollutant's sediment play water and lead to equalizing basin 3, in order to carry out follow-up purification treatment.
In the embodiment shown in fig. 1, the sludge discharging manner of the sedimentation tank 2 is not particularly limited, in this embodiment, the sludge discharging manner adopted by the sedimentation tank 2 is air-stripping sludge discharging, the sludge discharging pipe 7 comprises a vertical pipe and a horizontal pipe, the vertical pipe is a vertical pipe, the horizontal pipe is a horizontal pipe, that is, the sludge discharging pipe 7 comprises a vertical pipe, the horizontal pipe is installed on the vertical pipe, the horizontal pipe is used for discharging sludge (inorganic matter and partial organic matter are precipitated), the top of the vertical pipe is communicated with the atmosphere, the bottom of the vertical pipe is connected with an air supply pipe, one end of the air supply pipe, which is far away from the vertical pipe, is connected with an external air source, and the external air source adjusts the air pressure in the sludge discharging pipe 7 through the air supply pipe, so that the sludge is discharged to the sludge tank 4 through the sludge discharging pipe 7.
In the embodiment shown in fig. 1, the regulating reservoir 3 is used for regulating the quality and quantity of the precipitated effluent collected by the water collecting tank; be provided with elevator pump 9 in equalizing basin 3, this elevator pump 9 connects follow-up water purification unit, promote to deposit the play water to follow-up water purification unit and carry out subsequent processing, be about to sewage in the rural area cross the floater, suspended solid and inorganic pollutant get rid of the back, form and deposit the play water, the regulation of depositing play water quality water yield is carried out by equalizing basin 3 this moment, again purify this sediment play water, follow-up processing unit here does not do specific restriction, can be for the biological module who carries out follow-up aqueous cleaning, for example, will deposit the play water and lead to subsequent biological module, carry out purification such as biological degerming, through preliminary treatment, prevent that rural sewage is carrying out the in-process that purifies to sewage, floater wherein, suspended solid and a large amount of silt cause adverse effect to purifier or equipment.
In the embodiment shown in fig. 1, an air stirring member is arranged at the bottom of the regulating reservoir 3, the air stirring member is used for stirring the precipitated effluent in the regulating reservoir, the stirring member can be a stirring pipe or a stirrer, and is not particularly limited herein, and a stirring pipe is used in the embodiment; the bottom of the adjusting tank 3 is of a slope type, that is, the bottom surface of the adjusting tank 3 is a non-planar surface, and the specific slope and the inclination mode are not particularly limited.
The rural sewage pretreatment device is shown in fig. 1, and the sludge tank 4 is used for storing sludge; concrete form to the sludge impoundment does not do concrete restriction, in this embodiment, still be provided with the mud outlet that is used for driving mud on this sludge impoundment 4, through this mud outlet, mud is handled by the regular pumping of mud car, keep the rate of utilization of sludge impoundment 4, in addition, for the water economy resource, be provided with the overflow pipe (not mark in the picture) on this sludge impoundment 4 upper portion, and, this overflow pipe is connected with this equalizing basin 3, this overflow pipe is used for leading the supernatant that the sludge concentration produced to this equalizing basin 3, promptly in sludge impoundment 4, inorganic pollutant such as silt is through long-time the sediment, the supernatant of appearing also can flow back to equalizing basin 3 through this overflow pipe, carry out later stage purification treatment, increase the environmental protection, the water economy resource.
In the embodiment shown in fig. 1, because rural areas lack garbage collecting and transporting facilities, rural sewage usually has a large amount of floating objects and suspended objects, and meanwhile, because many rural roads are not hardened, silt and the like also enter the sewage in a large amount in rainy days, and during the sewage treatment process, the silt and the suspended objects can influence the normal operation of a subsequent treatment unit (a subsequent water purification unit) and equipment, so when the sewage enters the rural sewage pretreatment device of the utility model, the floating objects, the suspended objects and inorganic pollutants in the rural sewage can be removed in advance, specifically, the sewage enters the grid channel 1 from the water inlet 10, the sewage is primarily filtered by the mechanical grid in the grid channel 1 to remove the suspended objects or the floating objects in the sewage, if the mechanical grid fails, the floating objects are removed by the artificial grid 6 arranged at the water inlet 10 instead of the mechanical grid, Removing suspended matters, then leading the sewage from which the floating matters and the suspended matters are removed to a sedimentation tank 2 through a central cylinder, carrying out sedimentation treatment on the sewage by the sedimentation tank 2 so as to complete the separation of inorganic pollutants, part of organic pollutants and water, converging the sedimentation water without inorganic pollutants such as silt to an adjusting tank 3 through a weir groove and a water collecting groove, discharging the sludge precipitated to the bottom of the sedimentation tank 2 to a sludge tank 4 through a sludge hopper and a sludge discharge pipe, and discharging the sludge at a sludge outlet of the sludge tank 4 by a subsequent sludge truck; and then the equalizing basin 3 carries out the regulation of water yield quality of water to the precipitation play water to carry out the later stage purification to the precipitation play water, so, at the water purification treatment in-process, can not have silt and suspended solid to cause harmful effects to water purification treatment unit and equipment.
The utility model provides a rural sewage pretreatment device, which comprises a grid channel, a sedimentation tank connected with the grid channel, and a regulating tank and a sludge tank connected with the sedimentation tank, wherein the grid channel removes suspended matters or floating matters in sewage, the sedimentation tank sediments the sewage so as to separate the sewage into inorganic pollutants (sludge) and precipitated water only containing the organic pollutants, and the sludge is discharged to the sludge tank through a sludge hopper; introducing the precipitated effluent to a conditioning tank, wherein the sludge tank is used for storing sludge, and then removing the sludge through periodic treatment; the equalizing basin is used for carrying out the regulation of quality of water yield to settling out water to promote to follow-up water purification unit in order to carry out follow-up water purification treatment, prevent in sewage treatment process, silt and suspended solid, floater influence follow-up water purification treatment unit (module) and the normal operating of equipment.
The rural sewage pretreatment apparatus according to the present invention is described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications can be made to the rural sewage pretreatment device provided by the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.
Claims (10)
1. A rural sewage pretreatment device is characterized by comprising a grid channel, a sedimentation tank connected with the grid channel, and an adjusting tank and a sludge tank connected with the sedimentation tank;
a mechanical grating is arranged on the grating channel;
a central cylinder is arranged in the sedimentation tank; a reflecting plate is arranged at the lower end of the central cylinder;
a sludge hopper is arranged at the bottom of the sedimentation tank, a sludge discharge pipe is arranged at the bottom of the sludge hopper, and the sludge discharge pipe is connected with the sludge tank;
a lifting pump is arranged in the regulating tank and connected with a subsequent water purification unit;
an overflow pipe is arranged on the upper part of the sludge tank and is connected with the adjusting tank.
2. The rural sewage pretreatment device of claim 1, wherein a water inlet is further arranged on the grid channel, and,
a guide rail is arranged at the water inlet;
and a water inlet gate is arranged on the water inlet.
3. The rural sewage pretreatment device of claim 1,
an overflow port is arranged at the front part of the grid channel.
4. The rural sewage pretreatment device of claim 1, wherein a water outlet is provided at the end of the grid channel, and,
the water outlet is connected with the inlet of the sedimentation tank through a pipeline.
5. The rural sewage pretreatment device of claim 1,
a weir notch and a water collecting notch are also arranged in the sedimentation tank, wherein,
the weir notch is a triangular weir notch.
6. The rural sewage pretreatment device of claim 1,
the central cylinder is a steel cylinder.
7. The rural sewage pretreatment device of claim 6,
the lower end of the central cylinder is horn-shaped.
8. The rural sewage pretreatment device of claim 1,
the top of the sludge discharge pipe is communicated with the atmosphere, the bottom of the sludge discharge pipe is connected with an air supply pipe, and one end, far away from the sludge discharge pipe, of the air supply pipe is connected with an external air source.
9. The rural sewage pretreatment device of claim 1,
an air stirring piece is arranged at the bottom of the regulating tank;
the bottom of the adjusting tank is of a slope type, one end, close to the lift pump, of the slope is low, and one end, away from the lift pump, of the slope is high.
10. The rural sewage pretreatment device of claim 1,
and a sludge outlet for removing sludge is also arranged on the sludge tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021553944.9U CN212594474U (en) | 2020-07-30 | 2020-07-30 | Rural sewage pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021553944.9U CN212594474U (en) | 2020-07-30 | 2020-07-30 | Rural sewage pretreatment device |
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| Publication Number | Publication Date |
|---|---|
| CN212594474U true CN212594474U (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021553944.9U Active CN212594474U (en) | 2020-07-30 | 2020-07-30 | Rural sewage pretreatment device |
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|---|---|
| CN (1) | CN212594474U (en) |
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2020
- 2020-07-30 CN CN202021553944.9U patent/CN212594474U/en active Active
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