CN109513263B - Urban sewage pipeline pretreatment system - Google Patents
Urban sewage pipeline pretreatment system Download PDFInfo
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- CN109513263B CN109513263B CN201811481078.4A CN201811481078A CN109513263B CN 109513263 B CN109513263 B CN 109513263B CN 201811481078 A CN201811481078 A CN 201811481078A CN 109513263 B CN109513263 B CN 109513263B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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Abstract
The invention discloses an urban sewage pipeline pretreatment system, which comprises a sewage pipeline, a grid device, a temporary sewage storage tank and a sewage purification system which are sequentially connected, wherein the grid device comprises a sewage pipeline inlet, an upper cover, a horizontal arc-shaped grid and a sewage pipeline outlet; the sewage purification system comprises a plurality of venturis arranged side by side, the venturis are connected with a purification pipeline, the upper pipe wall and the lower pipe wall of the purification pipeline are provided with water outlets, the water outlets are connected with a purified water conveying pipeline, the purified water conveying pipeline directly conveys purified water to a sewage treatment plant, and the tail end of the purification pipeline is connected with a sludge storage pool. According to the invention, before sewage enters the sewage treatment plant, the sewage is treated for particulate matters such as silt, and the like, so that 50% -60% of impurities in the sewage are removed, the load of the sewage treatment plant is greatly reduced, and the urban sewage treatment capacity is improved.
Description
Technical Field
The invention belongs to the technical field of sewage treatment systems, and relates to a pretreatment system for an urban sewage pipeline.
Background
The construction of urban sewage pipelines is an important infrastructure of cities, is a key for sewage collection and centralized treatment, and is a necessary means for protecting water resources and improving the environment. The construction of urban sewage pipelines is not only related to the quality of the living environment of people, but also related to the sustainable and healthy development of economy and society, and is an indispensable material foundation for guaranteeing the life of people, developing social production and carrying out modern construction. Urban sewage pipeline drainage systems are mainly divided into sewage systems and rainwater drainage systems, and the urban drainage system is generally divided into two basic modes of confluence system and shunt system, which are regulated according to CJJ68-2007 technical Specifications for urban drainage pipe and pump station maintenance 2.1.2 and 2.1.3: the confluence system is a drainage mode for collecting and conveying sewage and rainwater by a drainage system; the split system is a drainage mode that different drainage systems are used for respectively collecting and conveying sewage and rainwater, but no matter the split system is a combined system, or the split system is a system, sewage in cities is uniformly collected and then delivered to a formulation factory for uniform treatment, and the problems that the sewage treatment capability is poor, the task burden of the sewage treatment factory is heavy, the treatment capability of the urban sewage is greatly limited and the like exist.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a pretreatment system for an urban sewage pipeline, which is used for treating particulate matters such as silt and the like before sewage enters a sewage treatment factory so as to remove 50-60% of impurities in the sewage, thereby greatly lightening the burden of the sewage treatment factory and improving the urban sewage treatment capability.
In order to achieve the purpose, the invention adopts the technical scheme that: a pretreatment system for an urban sewage pipeline comprises a sewage pipeline, a grating device, a temporary sewage storage tank and a sewage purification system which are sequentially connected, wherein the grating device comprises a sewage pipeline inlet, an upper cover, a horizontal arc-shaped grating and a sewage pipeline outlet; the sewage purification system comprises a plurality of venturis arranged side by side, the venturis are connected with a purification pipeline, the upper pipe wall and the lower pipe wall of the purification pipeline are provided with water outlets, the water outlets are connected with a purified water conveying pipeline, the purified water conveying pipeline directly conveys purified water to a sewage treatment plant, and the tail end of the purification pipeline is connected with a sludge storage pool.
Further, the water purification pipeline is connected with a water purification temporary storage tank through a water inlet valve, a reflux pump is arranged on the water purification temporary storage tank, the reflux pump is connected with the water purification pipeline through a water purification reflux pipeline and a reflux valve, and the water purification temporary storage tank conveys water to a sewage treatment plant through a pipeline.
Furthermore, a venturi and a purification pipeline in the sewage purification system are arranged in a crossed manner.
Furthermore, the sludge storage pool comprises a first purifying pool, a second purifying pool, a third purifying pool and a fourth purifying pool, the sewage purified by the first purifying pool flows to the second purifying pool through the water outlet after being precipitated, the sewage purified by the second purifying pool flows to the third purifying pool through the water outlet after being precipitated, the sewage purified by the third purifying pool flows to the fourth purifying pool through the water outlet after being precipitated, a water pump is arranged on the fourth purifying pool, and the water purified by the fourth purifying pool is pumped to the purified water conveying pipeline through the pipeline by the water pump.
Furthermore, a filter screen is arranged at the position of the water outlet.
Compared with the prior art, the invention has the beneficial effects that: the design concept of the traditional vertical grid of the pipeline is changed through the design of the horizontal arc-shaped grid, the problem that large granular impurities filtered by the vertical grid are difficult to clean is solved, the horizontal arc-shaped grid is adopted, the large granular impurities are left at the upper end of the grid after being filtered, the impurities on the grid can be cleaned only by opening the upper cover, water is not stopped, and the sewage discharge is not influenced while the impurities are cleaned; through the design of the sewage purification system, particularly the conception that the venturi and the water purification pipeline are arranged in a crossed manner, the sewage of the venturi generally has faster water flow at the inlet of the venturi, the sewage has small pressure at the outlet of the venturi because the diameter of the outlet is large when the outlet of the venturi is arranged, so the water flow is slowed down, the sewage after slowing down flows into the purification pipeline, the sewage enters the water purification conveying pipeline through the water outlets on the upper pipe wall and the lower pipe wall of the purification pipeline because the flow rate is small and the pressure of the main pipeline is small, impurities are remained in the purification pipeline, the sewage which is not filtered in the water purification conveying pipeline continues to flow backwards, the sewage flows into the venturi and the water purification pipeline again to filter the sewage, the impurities in the sewage are remained in the purification pipeline after the filtration for a plurality of times, most of the purified water flows into the purified water conveying pipeline, and the remained sewage flows into the sludge storage pool, the water in the purified water conveying pipeline is discharged to a sewage treatment plant, so that before the sewage enters a sewage treatment factory, particles such as silt are treated in advance to remove 50-60% of impurities in the sewage, the load of the sewage treatment plant is greatly reduced, and the urban sewage treatment capacity is improved; through the design of the water purification temporary storage tank, the water purification backflow pipeline and the backflow pump, after the pipeline is used for a section, the gate and the water inlet valve at the outlet of the sewage temporary storage tank are closed, the backflow valve and the backflow pump are opened, so that the purified water flows back to backflush the water outlets on the upper pipe wall and the lower pipe wall of the purification pipeline, and the water outlets are prevented from being blocked; through the design of the first purifying tank, the second purifying tank, the third purifying tank, the fourth purifying tank, the water pump in the mud storage tank, guarantee that sewage deposits and filters in the storage tank quartic, guarantee that mud all deposits in the storage tank, water in the fourth purifying tank is the water purification basically, then carry the water purification pipeline once more through water pump and pipeline in, finally arrange and send sewage treatment plant to handle, reduce the content of the water in the mud storage tank as far as possible, be convenient for to the processing of mud in the mud storage tank.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the grid assembly of the present invention;
FIG. 3 is a schematic diagram of the sludge storage tank structure of the present invention.
Detailed Description
The following will be described in detail with reference to the technical solutions in the embodiments of the present invention:
as shown in fig. 1, a municipal sewage pipeline pretreatment system comprises a sewage pipeline 1, a grating device 2, a temporary sewage storage tank 3 and a sewage purification system 4 which are connected in sequence, wherein the sewage purification system 4 comprises a plurality of venturis 5 arranged side by side, the venturis 5 are connected with a purification pipeline 6, the venturis 5 and the purification pipeline 6 in the sewage purification system 4 are arranged in a crossing way, the upper and lower pipe walls of the purification pipeline 6 are provided with water outlets 7, the water outlets 7 are connected with a purified water delivery pipeline 8, the pressure is high when the venturis 5 are in inlet, the pressure is low when the venturis 5 are in outlet, the flow rate is reduced when the sewage flows from the venturis 5 to the purification pipeline 6, so that large particle impurities in the sewage are precipitated, the purified water flows into the purified water delivery pipeline 8 through the water outlets 7, and the purified water delivery pipeline 8 directly delivers the purified water to a sewage treatment plant, part of large-particle impurities in the sewage are left on the side wall of the purifying pipeline 6, and part of the large-particle impurities continuously flow backwards along with the sewage, then pass through the venturi 5 and the purifying pipeline 6 for multiple times for filtration, and finally flow into a sludge storage tank 9 connected with the tail end of the purifying pipeline 6.
As shown in fig. 2, the grid device 2 comprises a sewage pipeline inlet 10, an upper cover 11, a horizontal arc-shaped grid 12 and a sewage pipeline outlet 13, wherein the sewage pipeline inlet 10 is arranged above the horizontal arc-shaped grid 12, the sewage pipeline outlet 13 is arranged below the horizontal arc-shaped grid 12, the sewage pipeline outlet 13 is connected with the temporary sewage storage tank 3, a gate 14 is arranged at the outlet of the temporary sewage storage tank 3, and the gate 14 is connected with the sewage purification system 4; through adopting horizontal arc grid 12, leave the upper end at grid 12 after making large granule impurity filter, only need open upper cover 11, can clear up the impurity on grid 12, need not cut off the water, does not influence sewage discharge when just clearing up impurity.
The water purification pipeline 8 is connected with a water purification temporary storage tank 16 through a water inlet valve 15, a reflux pump 17 is arranged on the water purification temporary storage tank 16, the reflux pump 17 is connected with the water purification pipeline 8 through a water purification reflux pipeline 18 and a reflux valve 19, and the water purification temporary storage tank 16 conveys purified water to a sewage treatment plant through a pipeline. After the pipeline is used for one section, the gate 14 and the water inlet valve 15 at the outlet of the temporary sewage storage tank 3 are closed, and the return valve 19 and the return pump 17 are opened to enable the purified water to flow back and recoil to the water outlet 7 on the upper pipe wall and the lower pipe wall of the purifying pipeline 6, so that the water outlet 7 is prevented from being blocked.
As shown in fig. 3, the sludge storage tank 9 includes a first purification tank 20, a second purification tank 21, a third purification tank 22, and a fourth purification tank 23, the sewage purified by the first purification tank 20 flows to the second purification tank 21 through a water outlet 24 after being precipitated, the sewage purified by the second purification tank 21 flows to the third purification tank 22 through the water outlet 24 after being precipitated, the sewage purified by the third purification tank 22 flows to the fourth purification tank 23 through the water outlet 24 after being precipitated, a water pump 25 is disposed on the fourth purification tank 23, a filter screen 26 is disposed at the position of the water outlet 24, and the water pump 25 pumps the water purified by the fourth purification tank 23 to the purified water delivery pipe 8 through a pipe. The sewage is guaranteed to be precipitated and filtered for four times in the sludge storage pool 9, the sludge is guaranteed to be precipitated in the storage pool 9, water in the fourth purifying pool 23 is basically purified, then the purified water is conveyed to the purified water conveying pipeline 8 again through the water pump 25 and the pipeline, and finally the purified water is discharged to the sewage treatment plant for treatment, so that the content of the water in the sludge storage pool is reduced as much as possible, and the treatment of the sludge in the sludge storage pool 9 is facilitated.
The working process of the invention is as follows:
firstly, sewage flows into a grating device 2 through a sewage pipeline 1 and a sewage pipeline inlet 10, large-particle impurities in the sewage are filtered on a grating 12, the large-particle impurities are left on the grating 12, and the filtered sewage flows into a temporary sewage storage tank 3 through a sewage pipeline outlet 13; then, water in the temporary sewage storage tank 3 sequentially flows into the venturi tube 5 and the purification pipeline 6 through the gate 14, purified water flows into the purified water conveying pipeline 8 through the water outlet 7 on the upper pipe wall and the lower pipe wall of the purification pipeline 6, part of large-particle impurities in the sewage are remained on the side wall of the purification pipeline 6, part of large-particle impurities continuously flow backwards along with the sewage, the large-particle impurities repeatedly pass through the venturi tube 5 and the purification pipeline 6 for filtration for many times, the purified water flows into the purified water conveying pipeline 8, and the sewage and the impurities flow into the sludge storage tank 9 connected with the tail end of the purification pipeline 6; finally, the purified water which is filtered for four times in the sludge storage tank 9 also flows into the purified water conveying pipeline 8 through the water pump 25 and the pipeline, and the water in the purified water conveying pipeline 8 finally flows into a sewage treatment plant.
The foregoing is directed to embodiments of the present application and it is understood that various modifications and enhancements may be made by those skilled in the art without departing from the principles of the application and are intended to be included within the scope of the application.
Claims (4)
1. The utility model provides a city sewage pipe pretreatment systems which characterized in that: the sewage treatment system comprises a sewage pipeline, a grating device, a temporary sewage storage tank and a sewage purification system which are sequentially connected, wherein the grating device comprises a sewage pipeline inlet, an upper cover, a horizontal arc-shaped grating and a sewage pipeline outlet; the sewage purification system comprises a plurality of venturis arranged side by side, the venturis are connected with a purification pipeline, the upper and lower pipe walls of the purification pipeline are provided with water outlets, the water outlets are connected with a purified water conveying pipeline, the purified water conveying pipeline directly conveys purified water to a sewage treatment plant, and the tail end of the purification pipeline is connected with a sludge storage pool; the venturi and the purifying pipeline in the sewage purifying system are arranged in a crossed manner.
2. The municipal sewage pipeline pretreatment system of claim 1, wherein: the water purification pipeline is connected with a water purification temporary storage pool through a water inlet valve, a reflux pump is arranged on the water purification temporary storage pool, the reflux pump is connected with the water purification pipeline through a water purification reflux pipeline and a reflux valve, and the water purification temporary storage pool conveys purified water to a sewage treatment plant through a pipeline.
3. The municipal sewage pipeline pretreatment system of claim 1, wherein: the sludge storage pool comprises a first purifying pool, a second purifying pool, a third purifying pool and a fourth purifying pool, sewage purified by the first purifying pool flows to the second purifying pool through a water outlet after being precipitated, sewage purified by the second purifying pool flows to the third purifying pool through the water outlet after being precipitated, sewage purified by the third purifying pool flows to the fourth purifying pool through the water outlet after being precipitated, a water pump is arranged on the fourth purifying pool, and the water pump pumps the water purified by the fourth purifying pool to a water purifying and conveying pipeline through a pipeline.
4. The municipal sewage pipeline pretreatment system of claim 3, wherein: and a filter screen is arranged at the water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811481078.4A CN109513263B (en) | 2018-12-05 | 2018-12-05 | Urban sewage pipeline pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811481078.4A CN109513263B (en) | 2018-12-05 | 2018-12-05 | Urban sewage pipeline pretreatment system |
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| Publication Number | Publication Date |
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| CN109513263A CN109513263A (en) | 2019-03-26 |
| CN109513263B true CN109513263B (en) | 2021-08-20 |
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| CN201811481078.4A Active CN109513263B (en) | 2018-12-05 | 2018-12-05 | Urban sewage pipeline pretreatment system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225263A (en) * | 2011-04-15 | 2011-10-26 | 青岛大学 | Dismountable cross-flow type filter for liquid with high viscosity |
| CN202128968U (en) * | 2011-05-26 | 2012-02-01 | 蔡忠 | Self-cleaning clip type filtering cylinder |
| CN104056484A (en) * | 2014-06-03 | 2014-09-24 | 庄件付 | Liquid filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043794A (en) * | 2013-01-25 | 2013-04-17 | 哈尔滨工业大学 | Sewage treatment method based on municipal sewage pipeline reinforcement and sewage recycling |
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2018
- 2018-12-05 CN CN201811481078.4A patent/CN109513263B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225263A (en) * | 2011-04-15 | 2011-10-26 | 青岛大学 | Dismountable cross-flow type filter for liquid with high viscosity |
| CN202128968U (en) * | 2011-05-26 | 2012-02-01 | 蔡忠 | Self-cleaning clip type filtering cylinder |
| CN104056484A (en) * | 2014-06-03 | 2014-09-24 | 庄件付 | Liquid filter |
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| CN109513263A (en) | 2019-03-26 |
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