CN113863479A - Controllable pressure flow industrial wastewater drainage method and system - Google Patents

Controllable pressure flow industrial wastewater drainage method and system Download PDF

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Publication number
CN113863479A
CN113863479A CN202111264532.2A CN202111264532A CN113863479A CN 113863479 A CN113863479 A CN 113863479A CN 202111264532 A CN202111264532 A CN 202111264532A CN 113863479 A CN113863479 A CN 113863479A
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Prior art keywords
drainage
wastewater
unit
pressure flow
waste water
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CN202111264532.2A
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CN113863479B (en
Inventor
严浩
张峻伟
刘美伶
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CISDI Engineering Co Ltd
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CISDI Engineering Co Ltd
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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
    • E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
    • 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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/04—Pipes or fittings specially adapted to sewers
    • 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
    • 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
    • E03F5/105—Accessories, e.g. flow regulators or cleaning devices
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers

Abstract

The invention discloses a method and a system for draining industrial wastewater with controllable pressure flow, comprising the following steps: dividing a plurality of drainage units in a wastewater area into n drainage areas; determining the effective volume of the wastewater collection pool corresponding to each drainage unit; carry out the drainage to n drainage regions according to drainage number of times r in turn in drainage cycle T, specifically include: draining the n drainage areas in sequence within the time period T/r of each alternate drainage; wherein, when the drainage is carried out for each drainage area, the wastewater is simultaneously extracted from the wastewater collecting tank corresponding to each drainage unit and is discharged to the wastewater treatment area. The invention can stabilize the flow of wastewater drainage to the utmost extent and reduce the operation energy consumption of wastewater drainage at the same time.

Description

Controllable pressure flow industrial wastewater drainage method and system
Technical Field
The invention relates to the field of drainage, in particular to a method and a system for draining industrial wastewater with controllable pressure flow.
Background
At present, industry joint's waste water drainage system includes waste water collecting system and effluent disposal system, and industry joint's waste water collecting system mainly adopts the mode of burying ground gravity flow drainage, so hardly discover revealing of waste water, and waste water collecting system is when outside drainage simultaneously, often can not effectively control drainage flow, cause the unstability of drainage, and then lead to the equipment such as the drainage pipe network of the suitable pipe diameter of unable effective configuration or specification, increased the operation energy consumption of equipment.
Disclosure of Invention
In view of the above, the present invention is directed to overcoming the drawbacks of the prior art, and providing a method and a system for discharging industrial wastewater with controlled pressure flow, which can stabilize the flow rate of wastewater discharge to the maximum extent and reduce the energy consumption for wastewater discharge.
The invention relates to a controllable pressure flow industrial wastewater drainage method, which comprises the following steps:
s1, dividing a plurality of drainage units in a wastewater area into n drainage areas;
s2, determining the effective volume of the waste water collecting tank corresponding to each drainage unit;
s3, draining the n drainage areas according to the alternate drainage times r in the drainage period T, and specifically comprising the following steps:
draining the n drainage areas in sequence within the time period T/r of each alternate drainage; wherein, when the drainage is carried out for each drainage area, the wastewater is simultaneously extracted from the wastewater collecting tank corresponding to each drainage unit and is discharged to the wastewater treatment area.
Further, the water discharge amount of any two of the n water discharge areas satisfies the following equation:
|Ui-Uj|≤∈；
wherein, UiIs the displacement of the drainage zone i; u shapejIs the displacement of the drainage zone j; e is the threshold value of the displacement difference.
Further, the drainage unit in any one of the n drainage zones satisfies the following equation:
Figure BDA0003326571480000021
wherein the content of the first and second substances,
Figure BDA0003326571480000022
is the distance between the drainage unit m in the drainage zone k and the wastewater treatment area;
Figure BDA0003326571480000023
is the distance between the drainage unit n in the drainage zone k and the wastewater treatment zone; σ is a distance difference threshold.
Further, the effective volume of the wastewater collection pool corresponding to the drainage unit is determined according to the following formula:
Figure BDA0003326571480000024
wherein, VpThe effective volume of the waste water collecting tank corresponding to the drainage unit p; q. q.spIs the average displacement of the drainage unit p.
Further, the drainage flow rate of the wastewater extracted and discharged from the wastewater collecting tank corresponding to the drainage unit is determined according to the following formula:
Qp＝n·qp；
wherein Q ispThe drainage flow rate is the drainage flow rate for extracting and discharging the wastewater from the wastewater collecting tank corresponding to the drainage unit p.
Further, the alternate drainage times are adjusted according to the following method:
determining the variation coefficient of the drainage quantity of each drainage unit;
and if at least one of the change coefficients is increased, reducing the alternate drainage times.
Further, if step S3 cannot be executed, draining is performed as follows:
and if the storage amount of the wastewater in the wastewater collection tank exceeds the effective volume, extracting the wastewater from the wastewater collection tank and discharging the wastewater to a wastewater treatment area.
A controllable pressure flow industrial wastewater drainage system comprises a wastewater extraction unit, a wastewater transmission unit and a monitoring unit;
the waste water extraction unit is used for extracting waste water in the waste water collection tank; the output port of the waste water extraction unit is connected with the input port of the waste water conveying unit;
the wastewater conveying unit is used for conveying wastewater to a wastewater treatment area; the output port of the waste water conveying unit outputs waste water;
the monitoring unit is used for monitoring the wastewater drainage condition.
Further, the wastewater pumping unit comprises a wastewater lift pump.
Further, the wastewater delivery unit comprises a pressure flow drainage pipe network; the pressure flow drainage pipe network comprises a main drainage pipe and a branch drainage pipe; one end of the drainage branch pipe is connected with the wastewater extraction unit, the other end of the drainage branch pipe is connected with one end of the main drainage pipe, and the other end of the main drainage pipe is connected with the wastewater treatment area; the pressure flow drainage pipe network is an overhead exposed pipe.
The invention has the beneficial effects that: the invention discloses a controllable pressure flow industrial wastewater drainage method and system, which reasonably divide a plurality of drainage units in a wastewater area into a plurality of drainage areas and set a drainage system, so that the plurality of drainage areas can orderly and effectively discharge wastewater, the stability of wastewater drainage is ensured, the operation energy consumption of wastewater drainage is reduced, and meanwhile, by adopting a pressure flow drainage mode and arranging an overhead open pipe, the leakage of the wastewater can be timely discovered, and the safety of wastewater drainage is ensured.
Detailed Description
The invention is further illustrated below:
the invention relates to a controllable pressure flow industrial wastewater drainage method, which comprises the following steps:
s1, dividing a plurality of drainage units in a wastewater area into n drainage areas; the waste water area is an area where a plurality of drainage units are located in a certain enterprise or factory, n drainage areas are formed by classifying the drainage units, and each drainage area at least comprises one drainage unit;
s2, determining the effective volume of the waste water collecting tank corresponding to each drainage unit; the drainage units correspond to the wastewater collecting tanks one by one, the output ports of the drainage units are connected with the input ports of the corresponding wastewater collecting tanks, and the wastewater collecting tanks are used for collecting wastewater discharged by the drainage units; by determining the effective volume of the wastewater collection tank, technical support is provided for reasonably building the wastewater collection tank with a proper size, waste of materials and artificial resources is avoided, and a foundation is laid for stably discharging wastewater subsequently;
s3, draining the n drainage areas according to the alternate drainage times r in the drainage period T, and specifically comprising the following steps:
draining the n drainage areas in sequence within the time period T/r of each alternate drainage; wherein, when the drainage is carried out for each drainage area, the wastewater is simultaneously extracted from the wastewater collecting tank corresponding to each drainage unit and is discharged to the wastewater treatment area. Reach the drainage effect of pressure flow through the mode of extraction waste water, compare in the drainage of burying ground gravity flow more traditional, discover leaking of waste water more easily.
In this embodiment, the displacement of any two of the n drainage areas satisfies the following equation:
|Ui-Uj|≤∈；
wherein, UiIs the displacement of the drainage zone i; u shapejIs the displacement of the drainage zone j; e is the threshold value of the displacement difference. The water discharge amount of the water discharge area is the sum of the water discharge amounts of a plurality of water discharge units in the water discharge area; wherein the threshold e is a positive number as small as possible, and the water discharge amount of each of the n water discharge regions is made substantially the same by setting a reasonable threshold e.
In this embodiment, the drainage unit in any one of the n drainage areas satisfies the following equation:
Figure BDA0003326571480000041
wherein the content of the first and second substances,
Figure BDA0003326571480000042
is the distance between the drainage unit m in the drainage zone k and the wastewater treatment area;
Figure BDA0003326571480000043
is the distance between the drainage unit n in the drainage zone k and the wastewater treatment zone; σ is a distance difference threshold. Wherein the threshold value sigma is a positive number which is as small as possible, and the distances between each drainage unit in a certain drainage area and the wastewater treatment area are basically the same by setting a reasonable threshold value sigma.
In this embodiment, the effective volume of the wastewater collection tank corresponding to the drainage unit is determined according to the following formula:
Figure BDA0003326571480000044
wherein, VpThe effective volume of the waste water collecting tank corresponding to the drainage unit p; q. q.spIs the average displacement of the drainage unit p. Wherein q ispCan be set in time t by collecting drainage cells ppThe total displacement of water in the water tank is determined by averaging.
In this embodiment, the flow rate of the drain water extracted and discharged from the waste water collecting tank corresponding to the drainage unit is determined according to the following formula:
Qp＝n·qp；
wherein Q ispThe drainage flow rate is the drainage flow rate for extracting and discharging the wastewater from the wastewater collecting tank corresponding to the drainage unit p. Through confirming drainage flow has guaranteed that the waste water volume of arranging in the drainage pipe network is more stable for the displacement peak value reduces, and the pipe network pipe diameter that the calculation obtained is littleer, and then avoided designing the great drain pipe of pipe diameter and using the great drainage water pump of operation energy consumption because of the uncertainty, thereby reduced drain pipe diameter and drainage water pump's operation energy consumption effectively.
In this embodiment, the number of times of the alternate drainage is set according to the drainage uniformity of the plurality of drainage units in the wastewater region, where the drainage uniformity is an average value of drainage amounts of the drainage units in a certain time period, and generally, in order to save a drainage process, the number of times of the alternate drainage is not greater than 8 times.
Adjusting the alternate drainage times according to the following method:
determining the variation coefficient of the drainage quantity of each drainage unit;
and if at least one of the change coefficients is increased, reducing the alternate drainage times.
Wherein the variation coefficient indicates a degree of unevenness of the water discharge amount; the variation coefficient includes a daily variation coefficient and a time variation coefficient. Here, the variation coefficient is expressed using a time-varying variation coefficient, which means a maximum water discharge amount for one hour during a day divided by an average water discharge amount for the day; the time-varying coefficient concerns the difference in water displacement at different hours of the day. The larger the coefficient of variation, the more uneven the drainage is.
Through reducing the number of times of drainage in turn for each drainage zone lasts discharge waste water as long as possible, and then reduces the water storage pressure of waste water collecting pit, has guaranteed that the drainage is stable with drainage safety.
In this embodiment, if step S3 cannot be executed, the method further includes:
and if the storage amount of the wastewater in the wastewater collection tank exceeds the effective volume, extracting the wastewater from the wastewater collection tank and discharging the wastewater to a wastewater treatment area. By preferentially using the drainage method in the step S3 for drainage and using the drainage method as a standby drainage scheme, on one hand, the drainage stability is ensured, and the drainage operation energy consumption and the material consumption are reduced; on the other hand, the drainage safety is ensured, so that the drainage process can be effectively and continuously operated.
A controllable pressure flow industrial wastewater drainage system comprises a wastewater extraction unit, a wastewater transmission unit and a monitoring unit;
the waste water extraction unit is used for extracting waste water in the waste water collection tank; the output port of the waste water extraction unit is connected with the input port of the waste water conveying unit;
the wastewater conveying unit is used for conveying wastewater to a wastewater treatment area; the output port of the waste water conveying unit outputs waste water;
the monitoring unit is used for monitoring the wastewater drainage condition. The monitoring unit comprises a monitoring system, the monitoring system generates a monitoring instruction by acquiring data parameters such as wastewater drainage videos or pictures, drainage flow, drainage pressure and the like and analyzing the data parameters, the monitoring instruction is sent to corresponding workers or corresponding equipment, and the workers or the equipment execute the monitoring instruction, so that effective monitoring on drainage is realized.
In this embodiment, the wastewater pumping unit includes a wastewater lift pump. The waste water lift pump is used for extracting waste water in the waste water collecting tank and discharging waste water to a pressure flow drainage pipe network. The waste water lift pump adopts the existing water pump, and selects the water pump with proper specification according to the set drainage flow.
In this embodiment, the wastewater delivery unit includes a pressure flow drainage pipe network; the pressure flow drainage pipe network comprises a main drainage pipe and a branch drainage pipe; one end of the drainage branch pipe is connected with the wastewater extraction unit, the other end of the drainage branch pipe is connected with one end of the main drainage pipe, and the other end of the main drainage pipe is connected with the wastewater treatment area; the pressure flow drainage pipe network is an overhead exposed pipe, and leakage of wastewater can be found in time by arranging the overhead exposed pipe; wherein, the quantity of arranging drainage main pipe and drainage branch pipe according to the regional operating condition of waste water to lay the elevation change and water quality condition (like the suspended solid) according to the pipe network and set up pressure flow drainage pipe network's discharge valve and mud valve.
The following is an example of the actual conditions of an industrial complex:
1. in a certain steel and iron united enterprise in North China, the drainage period is 24 hours, the number of the whole plant drainage partitions is 3, the number of the drainage rotation times is 4, the volume of each unit wastewater collection pit is 4q, the drainage flow of a water pump is 3q, and the pipe diameter of a whole plant drainage trunk pipe is reduced from DN700 to DN 400.
The drainage units of the steel mill are nearly thirty and distributed in hilly lands, the thirty drainage units are divided into 3 areas (an area A, an area B and an area C) for alternate drainage according to the drainage water quantity of each drainage unit, the alternate drainage is carried out for 4 times every day, and the formed drainage system is as shown in the following table 1:
TABLE 1
Figure BDA0003326571480000061
Figure BDA0003326571480000071
2. In a certain steel and iron united enterprise in the east coast, the drainage period is 24 hours, the number of drainage subareas in the whole plant is 2, the number of drainage rotation times is 2, the volume of a wastewater collection pit of each drainage unit is 6q, and the drainage flow of a water pump is 2 q. The pipe diameter of the plant drainage main pipe is reduced from DN600 to DN400 according to the design of the method.
The steel mill also belongs to a whole-flow combined iron and steel enterprise, various drainage units are close to sixty and are distributed in a coastal flat area, the steel mill is divided into 2 areas according to actual control requirements, and water is alternately drained for 2 times every day, so that a drainage system is formed as shown in the following table 2:
TABLE 2
Partitioning Time of drainage
A 8:00～14:00；20:00～2:00。
B 14:00～20:00；2:00～8:00。
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (10)

1. A method for draining industrial wastewater with controllable pressure flow is characterized in that: the method comprises the following steps:
s1, dividing a plurality of drainage units in a wastewater area into n drainage areas;
s2, determining the effective volume of the waste water collecting tank corresponding to each drainage unit;
s3, draining the n drainage areas according to the alternate drainage times r in the drainage period T, and specifically comprising the following steps:
draining the n drainage areas in sequence within the time period T/r of each alternate drainage; wherein, when the drainage is carried out for each drainage area, the wastewater is simultaneously extracted from the wastewater collecting tank corresponding to each drainage unit and is discharged to the wastewater treatment area.
2. A method for controlled pressure flow industrial wastewater drainage according to claim 1, characterized in that: the water discharge of any two water discharge areas in the n water discharge areas meets the following formula:
|Ui-Uj|≤∈；
wherein, UiIs the displacement of the drainage zone i; u shapejIs the displacement of the drainage zone j; e is the threshold value of the displacement difference.
3. A method for controlled pressure flow industrial wastewater drainage as claimed in claim 1 wherein: the drainage unit in any one of the n drainage areas satisfies the following formula:
Figure FDA0003326571470000011
wherein the content of the first and second substances,
Figure FDA0003326571470000012
is the distance between the drainage unit m in the drainage zone k and the wastewater treatment area;
Figure FDA0003326571470000013
is the distance between the drainage unit n in the drainage zone k and the wastewater treatment zone; σ is a distance difference threshold.
4. A method for controlled pressure flow industrial wastewater drainage as claimed in claim 1 wherein: determining the effective volume of the wastewater collection pool corresponding to the drainage unit according to the following formula:
Figure FDA0003326571470000014
wherein, VpThe effective volume of the waste water collecting tank corresponding to the drainage unit p; q. q.spIs the average displacement of the drainage unit p.
5. A method for controlled pressure flow industrial wastewater drainage as claimed in claim 1 wherein: determining the drainage flow rate of the wastewater extracted and discharged from the wastewater collecting tank corresponding to the drainage unit according to the following formula:
Qp＝n·qp；
wherein Q ispThe drainage flow rate is the drainage flow rate for extracting and discharging the wastewater from the wastewater collecting tank corresponding to the drainage unit p.
6. A method for controlled pressure flow industrial wastewater drainage as claimed in claim 1 wherein: adjusting the alternate drainage times according to the following method:
determining the variation coefficient of the drainage quantity of each drainage unit;
and if at least one of the change coefficients is increased, reducing the alternate drainage times.
7. A method for controlled pressure flow industrial wastewater drainage as claimed in claim 1 wherein: further, if step S3 cannot be executed, the water is drained as follows:
and if the storage amount of the wastewater in the wastewater collection tank exceeds the effective volume, extracting the wastewater from the wastewater collection tank and discharging the wastewater to a wastewater treatment area.
8. The utility model provides a controllable pressure flow industrial waste water drainage system which characterized in that: comprises a wastewater extraction unit, a wastewater transmission unit and a monitoring unit;
the waste water extraction unit is used for extracting waste water in the waste water collection tank; the output port of the waste water extraction unit is connected with the input port of the waste water conveying unit;
the wastewater conveying unit is used for conveying wastewater to a wastewater treatment area; the output port of the waste water conveying unit outputs waste water;
the monitoring unit is used for monitoring the wastewater drainage condition.
9. A controlled pressure flow industrial wastewater drainage system according to claim 8, wherein: the wastewater pumping unit comprises a wastewater lift pump.
10. A controlled pressure flow industrial wastewater drainage system according to claim 8, wherein: the wastewater transmission unit comprises a pressure flow drainage pipe network; the pressure flow drainage pipe network comprises a main drainage pipe and a branch drainage pipe; one end of the drainage branch pipe is connected with the wastewater extraction unit, the other end of the drainage branch pipe is connected with one end of the main drainage pipe, and the other end of the main drainage pipe is connected with the wastewater treatment area; the pressure flow drainage pipe network is an overhead exposed pipe.
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Citations (8)

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Publication number Priority date Publication date Assignee Title
CN103061398A (en) * 2012-05-24 2013-04-24 北京建筑工程学院 Drainage partition optimized design method of rural life sewage treatment project
JP2015025353A (en) * 2013-06-21 2015-02-05 株式会社東芝 Rainwater drainage pump control device, rainwater drainage pump control method, rainwater drainage pump control program, and parameter providing device
CN106971352A (en) * 2017-03-28 2017-07-21 衡水益通管业股份有限公司 System and method for constructing sponge city based on Internet and microcirculation system
CN107324523A (en) * 2017-08-22 2017-11-07 苏州市智水环境科研技术有限公司 A kind of industrial wastewater treatment system
CN108797782A (en) * 2017-04-28 2018-11-13 淄博华源矿业有限公司 Automatic drain system
CN110291861A (en) * 2018-03-23 2019-10-01 中国水利水电科学研究院 A kind of water discharge method
CN111424721A (en) * 2020-03-09 2020-07-17 无锡市政设计研究院有限公司 Factory valve well type drainage structure and system
CN112361218A (en) * 2020-11-13 2021-02-12 广州立信电子科技有限公司 Municipal administration water supply and drainage pipe network operation safety intelligent monitoring system based on big data

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061398A (en) * 2012-05-24 2013-04-24 北京建筑工程学院 Drainage partition optimized design method of rural life sewage treatment project
JP2015025353A (en) * 2013-06-21 2015-02-05 株式会社東芝 Rainwater drainage pump control device, rainwater drainage pump control method, rainwater drainage pump control program, and parameter providing device
CN106971352A (en) * 2017-03-28 2017-07-21 衡水益通管业股份有限公司 System and method for constructing sponge city based on Internet and microcirculation system
CN108797782A (en) * 2017-04-28 2018-11-13 淄博华源矿业有限公司 Automatic drain system
CN107324523A (en) * 2017-08-22 2017-11-07 苏州市智水环境科研技术有限公司 A kind of industrial wastewater treatment system
CN110291861A (en) * 2018-03-23 2019-10-01 中国水利水电科学研究院 A kind of water discharge method
CN111424721A (en) * 2020-03-09 2020-07-17 无锡市政设计研究院有限公司 Factory valve well type drainage structure and system
CN112361218A (en) * 2020-11-13 2021-02-12 广州立信电子科技有限公司 Municipal administration water supply and drainage pipe network operation safety intelligent monitoring system based on big data

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