CN111364568A - Sewage interception and storage regulation system and control method thereof - Google Patents
Sewage interception and storage regulation system and control method thereof Download PDFInfo
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- CN111364568A CN111364568A CN201811593812.6A CN201811593812A CN111364568A CN 111364568 A CN111364568 A CN 111364568A CN 201811593812 A CN201811593812 A CN 201811593812A CN 111364568 A CN111364568 A CN 111364568A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/102—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins using already existing parts of the sewer system for runoff-regulation
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/10—Dividing the first rain flush out of the stormwater flow
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Abstract
The invention relates to a sewage interception and storage regulation system and a control method thereof. The sewage interception and storage regulation system comprises a drain pipe, a sewage pipe and at least one water blocking device; the outlet of the drain pipe is connected with the sewage pipe, and the drain pipe is used for draining domestic sewage and/or initial rainwater into the sewage pipe; the sewage pipe is provided with at least one water blocking device. The sewage interception and storage regulation system and the storage regulation method can realize the purpose of intercepting and storage regulation only by the liquid level difference formed at the two sides of the water blocking device, and utilize the space in the pipeline to the maximum extent. More importantly, the water blocking device is arranged in the sewage pipe, the number of the storage tanks arranged along the sewage pipe can be reduced as much as possible, the occupied area of the land is saved, and the cost is also saved.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a sewage interception and storage regulation system and a control method thereof.
Background
The urbanization is rapidly developed, the urban land area is gradually expanded, and the urban rainwater pipe network structure is more and more complex, so that the treatment pressure of the urban rainwater treatment system is more and more serious, and the urban rainwater treatment system is also subject to huge transition.
The most commonly used contemporary split-flow water treatment system in the early days has a relatively complete storm water pipe structure and municipal sewage system, and they are completely separated, since it is not limited by land area, municipal population, and environmental and atmospheric pollution. The urban sewage directly enters a sewage treatment system through a sewage pipe network for collection and treatment; the rainwater pipe network directly receives urban rainwater and discharges the urban rainwater into a natural water body, and the urban rainwater pipe network and the natural water body are not communicated with each other and do not interfere with each other. However, as the population proliferates, the land area is limited; the continuous adoption of two pipe networks for treating sewage and rainwater cannot meet the requirements of social development; moreover, the coming of the industrial age causes a series of environmental and atmospheric pollution, so that the initial rainwater contains a large amount of pollution sources, and if the rainwater is directly discharged into a natural water body through a rainwater pipe network without being treated, the rainwater can be used by human beings without clean water. Forced to this, people are beginning to seek new rainwater and sewage treatment systems, which are mainly classified into three types: split flow, combined flow and mixed flow. The split-flow rainwater and sewage treatment system is generally constructed in a certain region of a city to form a catch basin structure, and polluted initial rainwater is accumulated and conveyed to the urban sewage treatment system for treatment, so that the rainwater is effectively prevented from being discharged into a natural water body to pollute the natural water body. Combined rainwater and sewage treatment systems are generally used for building a rainwater and sewage shared water treatment system in a certain region of a city. The mixed flow system is a brand new water treatment system constructed according to the split flow system and the combined flow system. Although the separation of initial rainwater and middle and later stage rainwater can be realized to a certain extent to above-mentioned three kinds of rainwater pipe network structures, when actually being applied to rainy season, the sewage pipe is during the sewage pipe is catched in a large amount of initial rainwater in the original sewage volume plus, carry to sewage treatment plant, cause serious water pressure for sewage treatment plant, and it can't realize the processing to the water very fast, and unnecessary water can only be discharged to natural water, and such drainage system has lost the effect that drainage system should play completely.
In order to solve the above problems, the current solution is to perform a storage adjustment process on the drainage system. However, the existing regulation and storage system generally adopts an overground or underground regulation and storage tank, but the regulation and storage tank occupies a large area, the excavation depth is also large, in addition, the existing land is tense and difficult to land acquisition, in addition, the regulation and storage tank is constructed in a centralized way and needs to be used as a regulation and storage tank for non-point source pollution control, non-point source pollution loads in a large area of the ground are collected into the regulation and storage tank in a centralized way through a drainage pipeline, the more difficulty and the higher cost are realized, the more critical point is that the collection efficiency of the pollution loads is very low, because the non-point source pollution load of a remote area is in the process of conveying from the ground to the tail end storage tank, because mix with a large amount of later stage rainwater, just can get into the regulation pond, lead to the initial stage rainwater of collecting in the regulation pond to contain a large amount of later stage rainwater, the average concentration of the pollution load of collecting the rainwater is just very low, seriously influences the efficiency of water treatment and the actual effect of regulation.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a sewage interception and storage system, which comprises a drain pipe, a sewage pipe and at least one water blocking device;
the outlet of the drain pipe is connected with the sewage pipe, and the drain pipe is used for draining domestic sewage and/or initial rainwater into the sewage pipe;
the sewage pipe is provided with at least one water blocking device, when the water blocking device is opened, the area of the water blocking device in the sewage pipe along the radial direction of the sewage pipe is smaller than the sectional area of the sewage pipe at the position of the water blocking device, and the horizontal heights of pipelines of the sewage pipe at two sides of the water blocking device are different.
According to an embodiment of the invention, the cross-sectional area of the water blocking device within the sewage pipe is adjustable. Preferably, the cross-sectional area is adjustable by controlling the height, width, inclination and/or thickness of the water blocking device extending within the sewer pipe.
According to an embodiment of the invention, at least one water blocking device, such as one or more water blocking devices, may be provided on the sewer pipe. For example, when a water blocking device is provided, the water blocking device may divide the sewage pipe into regulation areas, for example, a sewage pipe on one side close to the sewage treatment device and a sewage pipe on the other side are respectively used as the regulation areas; when a plurality of water blocking devices are provided, the plurality of water blocking devices may be spaced along the sewage pipe to divide the sewage pipe into a plurality of regulated storage regions.
According to the embodiment of the invention, the included angle (in this way, the inclination) between the part of the water blocking device in the sewage pipe and the central axis of the upstream pipeline can be set according to the laying gradient of the sewage pipe and the requirement of a storage space, as long as the storage space can be formed. By way of example, the included angle may be between 15 ° and 165 °, preferably 20 ° to 90 °, such as 25 °, 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, 65 °, 70 °, 75 °, 80 °, 85 °, or any integer or non-integer angle between the above different values.
According to an embodiment of the invention, said water blocking means is selected from the group consisting of a downward-opening weir, a downward-opening gate, an eccentric choke, a mini-impoundment door, an air bag, an air pillow or a pneumatic pinch valve.
According to the embodiment of the present invention, the water blocking device functions to form a storage space in the sewage pipe, thereby improving the treatment pressure of the sewage treatment device or the sewage treatment plant due to the slope drop.
According to the invention, the opening of the water blocking device means that the water blocking device is started to play an intercepting role, and the closing of the water blocking device means that the water blocking device is stopped to not play the intercepting role any more. Also, it should be understood by those skilled in the art that since the cross-sectional area of the water blocking device within the sewage pipe is adjustable, the term "open" includes any situation where the water blocking device exerts a part of the interception function until the whole interception function is exerted. In other words, the term "opening" includes any situation where the water-blocking device is activated to bring the water-blocking device to a cross-sectional area within the sewage pipe greater than 0 up to 100% of the cross-sectional area that the water-blocking device is capable of reaching within the sewage pipe, which may be adjusted according to the capacity of the desired storage area. In the context of the present invention, the cross-sectional area of the water blocking device within the sewage pipe may be defined as "opening", which may be 0% to 100%, such as 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or 100% of the maximum cross-sectional area that the water blocking device is able to reach within the sewage pipe.
According to an embodiment of the present invention, the distance between two adjacent water blocking devices may be set according to one or more factors of the length of the sewage pipe, the treatment capacity of the sewage treatment device or the sewage treatment plant, and the degree of the slope of the pipe. For example, the distance between two adjacent water blocking devices may be any suitable distance between 100 and 1500 meters.
According to an embodiment of the present invention, when n water blocking devices are provided, n +1 storage regions may be formed, where the 1 st storage region is formed by the water blocking device and the downstream pipeline close to the most downstream end, the n +1 th storage region is formed by the water blocking device and the upstream pipeline close to the most upstream end, and the remaining storage regions are formed by two adjacent water blocking devices.
According to the invention, n is an integer above 1, for example n may be any integer between 1 and 100000.
For ease of understanding and description, the present invention will be numbered sequentially from the most proximal (or "downstream-most") water blocking device to the most distal (or "upstream-most") water blocking device from the sewage treatment plant or water treatment plant.
According to the present invention, the "downstream" refers to a position closer to a sewage treatment plant or a sewage treatment plant than the "upstream", and the "upstream" refers to a position farther from the sewage treatment plant or the sewage treatment plant than the "downstream". As an example, the most downstream regulation and storage area is marked as the 1 st regulation and storage area, the regulation and storage area close to the most downstream regulation and storage area is marked as the 2 nd regulation and storage area, and so on, the most upstream regulation and storage area is marked as the n +1 th regulation and storage area, and the water blocking device at the end of the 1 st regulation and storage area upstream is the 1 st water blocking device, the water blocking device at the 2 nd regulation and storage area upstream is the 2 nd water blocking device, and so on, the water blocking device at the nth regulation and storage area upstream is the nth water blocking device, and each regulation and storage area is provided with a corresponding preset water level, the preset water level of the 1 st regulation and storage area is the 1 st preset water level, the preset water level of the 2 nd regulation and storage area is the 2 nd preset water level, and so on, the preset water level of the n +1 th regulation and storage area.
It will be appreciated by those skilled in the art that some, but not all, of the water blocking devices may be selected for use according to actual needs (e.g., rainfall requirements). It should be understood that in this case, the number of the regulation zones may also be changed accordingly.
According to a preferred embodiment of the invention, a liquid level sensor and/or a flow sensor is/are also arranged in one or more storage areas and used for detecting the liquid level height of the storage areas and/or the flow passing through the water blocking device.
According to an embodiment of the present invention, the system further comprises a diversion well and a rainwater pipe, the diversion well comprises a water inlet, a first water outlet and a second water outlet, the water inlet is connected to the drain pipe, the first water outlet is connected to the sewer pipe, and the second water outlet is connected to the rainwater pipe.
According to an embodiment of the present invention, the diversion well is used for diverting domestic sewage flowing out of the drainage pipe and rainwater containing sewage to be treated to the sewage pipe so as to divert rainwater not to be treated to the rainwater pipe.
According to an embodiment of the present invention, the drain pipe may drain domestic sewage and/or rainwater containing sewage to be treated into a sewage pipe.
According to an embodiment of the invention, the system does not comprise an additional primary rain pipe provided or retrofitted.
According to the present invention, the rainwater containing contaminants to be treated means rainwater containing contaminants to be treated by a sewage treatment plant or a sewage treatment apparatus, such as initial rainwater or other rainwater containing contaminants at a level to the extent that treatment is required.
According to the present invention, the non-treated rainwater refers to rainwater containing a lower level of pollutants than the degree of treatment required, such as mid-late stage rainwater.
According to an embodiment of the invention, the system further comprises a sewage interception pipe and/or a water outlet pipe, wherein when a diverter well is present, the first water outlet of the diverter well is connected to the sewage pipe through the sewage interception pipe, and the second water outlet is connected to the storm water pipe through the water outlet pipe.
According to an embodiment of the present invention, one end of the sewage pipe may be connected to a sewage treatment apparatus.
Preferably, when one end of the sewage pipe is connected with the sewage treatment device, the highest level of the sewage pipe between the sewage treatment device and the water blocking device is less than the highest level of the other part of the sewage pipe. More preferably, when one end of the sewage pipe is connected with the sewage treatment device, the highest level of the sewage pipe between the sewage treatment device and the water blocking device is less than or equal to the lowest level of the other part of the sewage pipe.
According to an embodiment of the present invention, the system further includes a controller, the controller is in signal connection with the liquid level sensor (and/or the flow sensor) and the water blocking device, respectively, and is configured to receive the liquid level height and/or the flow signal detected by the liquid level sensor, and control a cross-sectional area (or an opening degree) of the water blocking device in the sewage pipe upstream or downstream of the storage regulation area where the water blocking device is located according to the signal.
According to an embodiment of the present invention, the selection of the controller, the signal transmission or reception, and the manner in which the controller controls the water blocking device, etc. are all manners known in the art, and the controller is, for example, a PLC controller known in the art.
According to the embodiment of the invention, the drain pipe can be a confluence pipe in a confluence pipe network, namely a confluence pipe formed by confluence of a sewage pipe and a rainwater pipe; or a rainwater pipe in a shunt system pipe network or a rainwater pipe in a mixed flow system pipe network.
The invention also provides a pollutant interception and storage regulation method which comprises the use of the pollutant interception and storage regulation system.
Preferably, the method for intercepting and storing sewage comprises the step of starting at least one water blocking device so that the water blocking device and the wall of the sewage pipe form a storage area in the sewage pipe when raining.
The pollutant interception and storage regulation method can comprise one or more steps selected from the following steps:
s1) in sunny days, at least one water blocking device is in a closed state, so that domestic sewage from a drainage pipe is intercepted to a sewage pipe and conveyed to a sewage treatment plant or a sewage treatment device;
s2), during rainfall, intercepting rainwater containing dirt to be treated (such as initial rainwater or other rainwater containing dirt to the extent required to be treated) to a sewage pipe, and sending the rainwater to a sewage treatment plant or a sewage treatment device;
according to an exemplary embodiment of the invention, the ith regulation zone is optionally connected with other pipelines for transporting sewage; wherein, the step S2) may include controlling the opening of the water blocking device so that the flow rate of the water flowing into the sewage treatment plant or the sewage treatment device through the water blocking device does not exceed the maximum treatment capacity Q of the sewage treatment plant or the sewage treatment device; it should be understood that controlling the opening of the water blocking device may adjust the water level in the storage region for the purpose of controlling the flow rate. For example, to achieve the object, the opening degree of the 1 st water blocking device is controlled so that the flow rate flowing into the sewage treatment plant or the sewage treatment apparatus through the 1 st water blocking device does not exceed the maximum treatment amount Q of the sewage treatment plant or the sewage treatment apparatus; when the water level in the ith regulation area reaches the preset highest water level Hi of the regulation area, increasing the opening degree of the ith water blocking device, or when the water level in the ith regulation area is lower than the Hi, reducing the opening degree of the ith water blocking device, wherein n is more than or equal to i and more than or equal to 2, and n is the total number of the water blocking devices;
according to an exemplary embodiment of the present invention, Hi may be further set to an interval range value [ Himin,Himax]When the water level in the ith regulation area reaches HimaxIncreasing the opening degree of the ith water blocking device or when the water level in the ith regulation area is lower than HiminWhen the water blocking device is opened, the opening degree of the ith water blocking device is reduced;
according to an exemplary embodiment of the invention, the i-th regulation zone may further be connected to other sewage conveying pipes, which in the context of the present invention are also referred to as "sewer laterals". For example, in step S2), the maximum treatment capacity of the sewage treatment plant or the sewage treatment device is Q, the flow passing through the i-th water blocking device is Qi, the total input sewage amount of the sewage branch pipe connected with the i-th regulation area is Zi, the maximum flow threshold of each water blocking device is Fi, wherein n is greater than or equal to i and greater than or equal to 1, and n is the total amount of the water blocking devices; the condition is that the sum of the maximum flow threshold Fi of the ith water blocking device and the flow of sewage input by the sewage branch pipes from the 1 st regulating area to the ith regulating area is not more than Q, namely Fi + (Z1+ Z2+ … + Zi) is not more than Q. It should be understood that when the flow passing through a certain water blocking device is less than its maximum flow threshold Fi, the opening of the water blocking device may be reduced; when the detected flow is greater than the corresponding flow threshold Fi, the opening degree of the water blocking device can be increased to adjust Qi.
Wherein Fi can be further set to a span range value [ Fimin,Fimax]When the flow passing through the ith water blocking device is more than or equal to FimaxIncreasing the opening degree of the ith water blocking device, or when the flow of the ith water blocking device is less than or equal to FiminAnd when the water blocking device is opened, the opening degree of the ith water blocking device is reduced.
In the present application, the term "to" is to be understood as being greater than or equal to, for example, when the water level in the i-th regulation area reaches HimaxIt is understood that when the water level in the ith regulation area is greater than or equal to Himax. The term "below" may be understood as being less than or equal to, for example, when the flow of the ith water-blocking device is below FiminIt can be understood that when the flow of the ith water blocking device is less than or equal to Fimin。
Advantageous effects
The water body storage device, the sewage interception storage system and the storage method of the invention use a pipeline storage mode, and can realize the purpose of intercepting and storing only by the liquid level difference formed at two sides of the water blocking device, thereby solving a plurality of problems in the existing storage method. The inventors have surprisingly found that the "duct-conditioning" approach maximizes the use of space within the duct. More importantly, after the water blocking device is arranged in the pipeline and the liquid level sensor and the flow sensor are arranged, the number of the storage tanks arranged along the sewage pipe is reduced as much as possible, the occupied area and the cost of the land are saved, and the sewage treatment capacity is controlled in a more accurate and stable mode.
After the device and the system are used, the non-point source pollution load in the area along the line can be accessed nearby and directly accessed into the storage regulating pipeline through the shunt well, and the collection efficiency is very high. The water blocking device can effectively intercept the water in the sewage pipe, so that the phenomenon that a large amount of rainwater is discharged into a sewage treatment plant at the same time in rainy days to cause treatment pressure is avoided, and the phenomenon that the sewage is directly discharged by the sewage treatment plant due to the limited treatment capacity is avoided.
Because the distance of the pipeline is generally longer, the method can ensure that the plane excavation area is smaller, and obviously reduces the influence on the ground traffic function. And moreover, the pipeline is simple to lay, the pipeline can be prefabricated and directly laid on site, the construction is simple, and the period is greatly shortened.
Drawings
FIG. 1 is a schematic structural diagram of a soil interception and storage system according to embodiments 1 to 3 of the present invention;
fig. 2 is a schematic structural view of a sewage pipe of the sewage interception storage system according to embodiments 1 to 3 of the present invention.
Detailed Description
The technical solution will be further described in detail with reference to specific embodiments. It is to be understood that the following examples are only illustrative and explanatory of the present invention and should not be construed as limiting the scope of the present invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present invention.
Example 1
The structure of the soil interception and storage system of the present embodiment is shown in fig. 1 and 2. The system comprises: the device comprises a drain pipe 5, a diversion well 4, a sewage pipe 1, a rainwater pipe 2, at least one water blocking device 3, a sewage intercepting pipe 6 and a water outlet pipe 7;
the flow dividing well 4 comprises a water inlet, a first water outlet and a second water outlet; the water inlet is connected with a drain pipe 5, the first water outlet is connected with a sewage pipe 1 through a sewage interception pipe 6, and the second water outlet is connected with a rainwater pipe 2 through a water outlet pipe 7; one end of the sewage pipe 1 is connected with a sewage treatment plant 11.
The sewer pipe 1 is provided with a plurality of water blocking devices (not all shown). When the water blocking device is started, the area of the water blocking device in the sewage pipe along the radial direction of the sewage pipe is smaller than the sectional area of the sewage pipe at the position of the water blocking device. And the sewage pipes are positioned at the two sides of the water blocking device, the horizontal heights of the pipelines are different, and the water blocking devices can be arranged at intervals along the sewage pipes so as to divide the sewage pipes into a plurality of regulation and storage areas.
The flow dividing well is used for dividing sewage and/or initial rainwater flowing in from the drainage pipe to the sewage pipe and dividing middle and later rainwater to the rainwater pipe; the drain pipe is used for draining domestic sewage and/or initial rainwater into the sewage pipe;
when one end of the sewage pipe is connected with the sewage treatment device or the sewage treatment plant, the highest level of the sewage pipe between the sewage treatment device and the water blocking device is less than or equal to the lowest level of the sewage pipes of other parts.
Each regulating and storing area is provided with a liquid level sensor and a flow sensor and is used for detecting the liquid level height of the regulating and storing area and the sewage flow passing through each water blocking device.
The system also comprises a PLC controller which is respectively in signal connection with the liquid level sensor, the flow sensor and the water blocking device and is used for receiving the liquid level height and the flow signal detected by the sensor and controlling the opening degree of the water blocking device at the upstream or the downstream of the regulation area where the liquid level sensor or the flow sensor is located according to the signal.
The water blocking device is selected from a lower opening weir gate, a lower opening gate, an eccentric blocking gate, a micro impounding gate, an air bag, an air pillow or a pneumatic pipe clamp valve. The water blocking device is used for overcoming the problem that the sewage pipe cannot be filled with water due to slope drop and relieving the treatment pressure of the sewage treatment plant in rainy days.
The distance between two adjacent water blocking devices may be set according to the length of the sewage pipe and the treatment capacity of the sewage treatment plant, and the slope of the sewage pipe, for example, the distance between two adjacent water blocking devices is 100-1500 meters.
When the number of the water blocking devices is n, n +1 regulating and storing areas can be formed, wherein the first regulating and storing area is formed by the sewage treatment plant and the water blocking device close to the most downstream end, the last regulating and storing area is formed by the water blocking device close to the most upstream end and an upstream pipeline, and the rest regulating and storing areas are formed by two adjacent water blocking devices.
The sewage treatment system is characterized in that an n-type water blocking device is arranged in the sewage pipe, the sewage pipe is divided into n +1 regulation and storage areas, the 1 st regulation and storage area to the n +1 th regulation and storage area are sequentially arranged upstream from the sewage treatment plant or the sewage treatment device, the water blocking device at the upstream end part of the 1 st regulation and storage area is the 1 st water blocking device, and the like, and the water blocking device at the upstream end part of the n-th regulation and storage area is the n-type water blocking device.
Example 2
The control method of the system in embodiment 1 is: as shown in fig. 2, 4 storage regulation areas are formed in the sewage pipe by 3 water blocking devices, a 1 st storage regulation area is formed between a 1 st water blocking device a-1 and a sewage treatment plant 11, a 1 st preset water level is arranged in the 1 st storage regulation area, a 2 nd storage regulation area is formed between the 1 st water blocking device a-1 and a 2 nd water blocking device a-2, a 2 nd preset water level is arranged in the 2 nd storage regulation area, a 3 rd storage regulation area is formed between the 2 nd water blocking device a-2 and the 3 rd water blocking device a-3, a 3 rd preset water level is arranged in the 3 rd storage regulation area, a 4 th storage regulation area is formed between the 3 rd water blocking device a-4 and an upstream pipeline, and a 4 th preset water level is arranged in the 4 th storage regulation area;
in sunny days, the 3 water blocking devices are in a closed state, the sewage intercepting pipe of the diversion well is in an open state, and domestic sewage from the drainage pipe is intercepted to the sewage pipe and sent to a sewage treatment plant for treatment;
when raining, the sewage intercepting pipe of the diversion well is in an open state, initial rainwater or rainwater with serious pollution in the catchment area is intercepted to the sewage pipe by the diversion well, and the rainwater is sent to a sewage treatment plant for treatment; the liquid level sensor in every regulation district detects the liquid level height in this regulation district, and flow sensor detects the sewage flow through each device that blocks water to give the PLC controller with the signal transfer that detects, the controller carries out the comparison with predetermined threshold value according to the result that obtains that detects, judges opening or closing of device that blocks water this moment promptly, and then dams part water in the sewage pipe temporarily, and still remains certain space in the sewage pipe, supplies the water of all the other parts to arrange to sewage treatment plant. Specifically, the opening degree of the 1 st water blocking device is controlled so that the flow rate flowing into the sewage treatment plant or the sewage treatment device through the 1 st water blocking device does not exceed the maximum treatment capacity Q of the sewage treatment plant or the sewage treatment device; when the water level in the ith regulation area reaches the preset highest water level Hi of the regulation area, increasing the opening degree of the ith water blocking device, or when the water level in the ith regulation area is lower than the Hi, reducing the opening degree of the ith water blocking device, wherein n is more than or equal to i and more than or equal to 2; and n is the total number of water blocking devices 3.
Alternatively, Hi may be further set to the interval range value [ Himin,Himax]When the water level in the ith regulation area reaches HimaxIncreasing the opening degree of the ith water blocking device or when the water level in the ith regulation area is lower than HiminAnd when the water blocking device is opened, the opening degree of the ith water blocking device is reduced.
Example 3
The systems of examples 1 and 2 were used with the following differences: the ith regulation area can be further connected with other pipelines (sewage branch pipes) for conveying sewage. When rainfall occurs, the maximum treatment capacity of a sewage treatment plant or a sewage treatment device is Q, the flow passing through the ith water blocking device is Qi, the total input sewage quantity of a sewage branch pipe connected with the ith regulation and storage area is Zi, the maximum flow threshold value of each water blocking device is Fi, wherein n is more than or equal to i and more than or equal to 1, and n is the total quantity of the water blocking devices 3; the condition is that the sum of the maximum flow threshold Fi of the ith water blocking device and the flow of sewage input by the sewage branch pipes from the 1 st regulating area to the ith regulating area is not more than Q, namely Fi + (Z1+ Z2+ … + Zi) is not more than Q. When the flow passing through a certain water blocking device is smaller than the maximum flow threshold Fi, the opening degree of the water blocking device can be reduced; when the detected flow is greater than the corresponding flow threshold Fi, the opening degree of the water blocking device can be increased to adjust Qi.
According to the embodiment, during rainfall, especially initial rainwater can be directly stored in the sewage pipe through the arrangement of the water blocking devices, the additional land reclamation along the sewage pipe is avoided, the independent regulation and storage tank is arranged, the cost is reduced, and meanwhile, the serious treatment pressure caused by the fact that a large amount of sewage needs to be treated in a short time in a sewage plant can be avoided.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A sewage interception and storage regulation system comprises a drainage pipe, a sewage pipe and at least one water blocking device;
the outlet of the drain pipe is connected with the sewage pipe, and the drain pipe is used for draining domestic sewage and/or initial rainwater into the sewage pipe;
the sewage pipe is provided with at least one water blocking device, when the water blocking device is opened, the area of the water blocking device in the sewage pipe along the radial direction of the sewage pipe is smaller than the sectional area of the sewage pipe at the position of the water blocking device, and the horizontal heights of pipelines of the sewage pipe at two sides of the water blocking device are different.
2. The catch dirt storage system of claim 1, wherein the cross-sectional area of the water blocking device within the sewer pipe is adjusted by controlling the height, width, inclination and/or thickness of the water blocking device extending within the sewer pipe;
one or more water blocking devices may be provided on the sewer pipe to divide the sewer pipe into storage and regulation zones.
3. The soil interception and storage system of claim 1 or 2 wherein said water blocking device is selected from the group consisting of a lower open weir, a lower open gate, an eccentric choke, a micro impoundment gate, an air bag, an air pillow or a pneumatic pinch valve.
4. The pollutant intercepting and conditioning system of any one of claims 1 to 3, wherein a level sensor and/or a flow sensor is further provided in one or more of the conditioning zones.
5. The soil interception and storage system of any one of claims 1 to 4, wherein said system further comprises a diverter well and a storm water pipe, said diverter well comprising a water inlet, a first water outlet and a second water outlet, said water inlet being connected to a drain pipe, said first water outlet being connected to a sewer pipe, said second water outlet being connected to a storm water pipe.
6. The soil interception storage system of claim 5 wherein said system further comprises a sewage interception pipe and/or an outlet pipe, wherein when a diverter well is present, said first water outlet of said diverter well is connected to a sewer pipe through said sewage interception pipe and said second water outlet is connected to a storm sewer through said outlet pipe.
7. The sewage interception and storage system of any one of claims 1 to 6, wherein one end of the sewage pipe is connected to a sewage treatment plant or a sewage treatment apparatus;
preferably, the highest level of the sewage pipe between the sewage treatment plant or the sewage treatment device and the water blocking device is less than the highest level of the sewage pipe in other parts; more preferably, when one end of the sewage pipe is connected with the sewage treatment device, the highest level of the sewage pipe between the sewage treatment plant or the sewage treatment device and the water blocking device is less than or equal to the lowest level of the other part of the sewage pipe.
8. The pollutant intercepting and conditioning system of any one of claims 1 to 7, wherein the system further comprises a controller in signal connection with the water blocking device, the liquid level sensor and/or the flow sensor, respectively;
the drainage pipe can be a confluence pipe in a confluence pipe network, namely a confluence pipe formed by confluence of a sewage pipe and a rainwater pipe; or a rainwater pipe in a shunt system pipe network or a rainwater pipe in a mixed flow system pipe network.
9. A method of intercepting contamination and regulating storage, the method comprising using the system of any one of 1 to 8,
the sewage treatment system is characterized in that n water blocking devices are arranged in the sewage pipe, the sewage pipe is divided into n +1 regulation and storage areas, wherein the 1 st regulation and storage area to the n +1 th regulation and storage area are sequentially arranged upstream from a sewage treatment plant or a sewage treatment device, the water blocking device at the upstream end part of the 1 st regulation and storage area is the 1 st water blocking device, the rest is done by analogy, the water blocking device at the upstream end part of the n regulation and storage area is the nth water blocking device, and the sewage treatment system comprises one or more steps selected from the following steps:
s1) in sunny days, at least one water blocking device is in a closed state, so that domestic sewage from a drainage pipe is intercepted to a sewage pipe and conveyed to a sewage treatment plant or a sewage treatment device;
s2), when the rain falls, the rain water containing dirt to be treated (such as initial rain water or other rain water containing dirt with the level reaching the required treatment degree) is cut off to a sewage pipe and sent to a sewage treatment plant or a sewage treatment device.
10. The pollutant intercepting and storing method of claim 9, wherein the step S2 may further comprise one of the following steps:
1) the ith regulating and storing area is optionally connected with other pipelines for conveying sewage; controlling the opening degree of the 1 st water blocking device so that the flow rate flowing into the sewage treatment plant or the sewage treatment device through the 1 st water blocking device does not exceed the maximum treatment capacity Q of the sewage treatment plant or the sewage treatment device; when the water level in the ith regulation area reaches the preset highest water level Hi of the regulation area, increasing the opening degree of the ith water blocking device, or when the water level in the ith regulation area is lower than the Hi, reducing the opening degree of the ith water blocking device, wherein n is more than or equal to i and more than or equal to 2;
for example, Hi is further set to the interval range value [ Himin,Himax]When the water level in the ith regulation area is more than or equal to HimaxIncreasing the opening degree of the ith water blocking device or when the water level in the ith storage area is less than or equal to HiminWhen the water blocking device is opened, the opening degree of the ith water blocking device is reduced;
or
2) The ith regulating and storing area is connected with other sewage conveying pipelines named as sewage branch pipes, the maximum treatment capacity of a sewage treatment plant or a sewage treatment device is Q, the flow passing through the ith water blocking device is Qi, the flow of sewage input by the sewage branch pipe connected with the ith regulating and storing area is Zi, the maximum flow threshold of each water blocking device is Fi, wherein n is more than or equal to i and more than or equal to 1, and n is the total number of the water blocking devices; the condition is that the sum of the maximum flow threshold Fi of the ith water blocking device and the flow of sewage input by the sewage branch pipes from the 1 st regulating area to the ith regulating area is not more than Q, namely Fi + (Z1+ Z2+ … + Zi) is not more than Q;
for example, Fi may be further set to an interval range value Fimin,Fimax]When the flow passing through the ith water blocking device is more than or equal to FimaxIncreasing the opening degree of the ith water blocking device, or when the flow of the ith water blocking device is less than or equal to FiminAnd when the water blocking device is opened, the opening degree of the ith water blocking device is reduced.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980138A (en) * | 2020-08-29 | 2020-11-24 | 北京逸智联科技有限公司 | Sponge city initial rainwater collection system and collection method |
| CN112408524A (en) * | 2020-12-04 | 2021-02-26 | 北控水务(中国)投资有限公司 | High-load processing system, method, device and equipment for pipe network regulation and storage coupling water plant |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980138A (en) * | 2020-08-29 | 2020-11-24 | 北京逸智联科技有限公司 | Sponge city initial rainwater collection system and collection method |
| CN112408524A (en) * | 2020-12-04 | 2021-02-26 | 北控水务(中国)投资有限公司 | High-load processing system, method, device and equipment for pipe network regulation and storage coupling water plant |
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