CN110472796A - Sponge urban construction pilot area's water quantity and quality monitoring location method and early warning system - Google Patents
Sponge urban construction pilot area's water quantity and quality monitoring location method and early warning system Download PDFInfo
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Abstract
The invention discloses a kind of sponge urban construction pilot area water quantity and quality monitoring location method and monitoring early-warning systems.It includes pilot area water system, the water of disposal precinct and representative items, water quality measuring point that the monitoring site of multi-layer, which is laid,.Sponge urban construction pilot area water quantity and quality monitoring early-warning system, including measuring point data acquisition subsystem and analysis and early warning subsystem are established, is respectively used to acquire and analyze measuring point data.The present invention is based on sponge urban construction pilot area construction objects, it establishes from " source " to the plant quarantine system of the multi-layer of " remittance ", comprehensively and objectively reflect the water quantity and quality situation of pilot area entirety, pass through monitoring early-warning system simultaneously, identification in time, record and the early warning problem, to take targetedly measure to provide effective information, have many advantages, such as that monitoring efficiency is high, monitoring result is reliable.
Description
Technical field
The present invention relates to a kind of sponge urban construction pilot area water quantity and quality monitoring location method and early warning systems, belong to ring
Border technical field.
Background technique
With gradually going deep into for each city sponge urban construction work, the performance assessment job in sponge city is gradually carried out.
A large amount of water quantity and quality data will be based on to the examination of pilot area sponge urban construction effect and the operation and maintenance of relevant item, passed through
Scientific and rational monitoring scheme is formulated, the important point in pilot area is monitored, the related datas such as accumulation water quantity and quality are convenient for
The operational effect for examining every sponge functional facilities, finds operation risk and relevant issues in time, and makes corresponding effective
Corrigendum.
China not yet forms technical system, sponge city in terms of the area's water quantity and quality monitoring of sponge urban construction pilot at present
The point arrangement of construct effects of biology examination monitoring scheme mainly carries out artificial screening according to existing experience and simplifies, and has no basis
Pilot area on-site actual situations targetedly carry out genealogical classification to monitoring situation.And in fact, sponge Process of Urban Development
In, the difference of the features such as mining inetesity, ratio of green space and hydrogeology of each child partition (as usual changing area, newly-built area) makes each son point
The control target of the low influence exploitation storm-water system building in area is also different, and monitoring site does not make comprehensively can not be to pilot area
The construct effects of biology of different scale targetedly assessed, the water quantity and quality situation in pilot area cannot be objectively responded comprehensively,
Seriously affect the reliability of monitoring efficiency and monitoring result.Therefore, to sponge urban construction pilot area establish it is a set of from " source " to
The monitoring technology system of " remittance " has become the urgent need that scientific and rational examination is carried out to sponge urban construction pilot area.
Summary of the invention
The present invention is intended to provide a kind of sponge urban construction pilot area water quantity and quality monitoring location method and early warning system, lead to
Identification sponge urban construction pilot area water, the important point of water quality are crossed, and establishes early warning system and forms unified monitoring system, it is right
Realize that sponge urban construction pilot area's water quality objective provides early warning and goal of regulation and control.
The invention is realized by the following technical scheme:
Sponge urban construction pilot area water quantity and quality monitoring location method, which comprises
Based on sponge urban construction pilot area boundary, identification flows into and out all of the sponge urban construction pilot area
Water system delineates corresponding river in each water system and enters flow section and river outlet section, and it is disconnected to become a mandarin in the water-based river
Face and river outlet section lay corresponding river and enter flow section measuring point and river outlet section measuring point, obtain and water system pair respectively
The river answered enters flow section measuring point and river outlet section measuring point and its water and water quality monitoring value；
The drainage pipeline networks status for obtaining the sponge urban construction pilot area, according to rainwater and sewage collect and discharge region
Domain sets several disposal precincts, and imports water system according to the end discharge outlet of the disposal precinct, by the disposal precinct by remittance
Enter water system identification and record, and set disposal precinct measuring point in the end discharge outlet of the disposal precinct, obtains corresponding with water system
Disposal precinct measuring point and its water and water quality monitoring value；
Sponge urban construction pilot area's representative items and its discharge outlet status are obtained, and imports water system by its discharge outlet
It identifies and records respectively, representative items measuring point is set in the representative items discharge outlet, obtains representative items corresponding with water system
Measuring point and its water and water quality monitoring value；
Sponge urban construction pilot area monitoring water quality early warning system is established, the regulator control system includes measuring point data acquisition
System and analysis and early warning subsystem are respectively used to acquire and analyze measuring point data；The measuring point data includes water system and its correspondence
River enters flow section measuring point, river outlet section measuring point, disposal precinct measuring point and representative items measuring point and its water and water quality prison
Measured value；River outlet section measuring point water quality objective value is set, by the river outlet section measuring point water quality monitoring value and its target
Value comparison provides early warning by the analysis and early warning subsystem when river outlet section measuring point water quality monitoring value is exceeded
Signal.
In above-mentioned technical proposal, the method also includes:
The water system for analyzing the sponge urban construction pilot area, crosses according to water system and/or tapping condition is by the water system
Divide several sections, and the starting point in section, intersection point, terminal arrange corresponding water system section starting point measuring point, intersection point measuring point and terminal
Measuring point obtains its corresponding water and water quality monitoring value；
Pass through the water and water quality monitoring value ratio of starting point measuring points in section several in the water system, intersection point measuring point and terminal measuring point
Compared with the acquisition water-based key monitoring section and its key pollutants.
In above-mentioned technical proposal, the method also includes:
When setting disposal precinct, according to the confluence state that rain pipe and sewage pipe collaborate or shunt, the disposal precinct phase
That answers is divided into drainage system subregion or combined flow system subregion；The drainage system subregion measuring point includes the combined system row
The corresponding combined system pipe end discharge outlet in moisture area；The combined flow system subregion measuring point includes the combined flow system subregion
Corresponding separate system pipe end discharge outlet；
Obtain the water and water quality monitoring value of the drainage system subregion measuring point or combined flow system subregion measuring point；
Drainage system subregion measuring point and combined flow system subregion measuring point water quality objective value is set separately, when any combined system
When disposal precinct measuring point or exceeded combined flow system subregion measuring point water quality monitoring value, provided by the analysis and early warning subsystem pre-
Alert signal.
In above-mentioned technical proposal, when the combined flow system subregion is equipped with intercepting sewer and Vatch basin, the combined flow system
Subregion measuring point further includes the Vatch basin measuring point in the combined flow system subregion, obtains the combined flow system subregion measuring point and cuts
Flow the water and water quality monitoring value of well measuring point.
In above-mentioned technical proposal, the end discharge outlet of the disposal precinct passes through setting flowmeter and/or liquidometer measurement
Its water.
In above-mentioned technical proposal, the water quality monitoring value is the real time measurement of water quality indicator, and the water quality indicator includes
NH3- N, COD, TN, TP, TSS, pH, DO, T, conductivity.
A kind of sponge urban construction pilot area water quantity and quality monitoring early-warning system, including measuring point data acquisition subsystem and point
Early warning subsystem is analysed, is respectively used to acquire and analyze measuring point data；The measuring point data includes above-mentioned water system and its corresponding river
Road enters flow section measuring point, river outlet section measuring point, disposal precinct measuring point and representative items measuring point and its water and water quality monitoring
Value；River outlet section measuring point water quality objective value is set by the analysis and early warning subsystem, the river outlet section is surveyed
Point water quality monitoring value and its target value pass through described point when river outlet section measuring point water quality monitoring value is exceeded
Analysis early warning subsystem provides pre-warning signal.
In above-mentioned technical proposal, the disposal precinct includes drainage system subregion and/or combined flow system subregion, described
Drainage system subregion measuring point includes the corresponding combined system pipe end discharge outlet of the drainage system subregion, the separate system
Disposal precinct measuring point includes the corresponding separate system pipe end discharge outlet of the combined flow system subregion, is acquired by measuring point data
Subsystem obtains the water and water quality monitoring value of the drainage system subregion measuring point and/or combined flow system subregion measuring point；And
Drainage system subregion measuring point and/or combined flow system subregion measuring point water quality mesh is set separately by the analysis and early warning subsystem
Scale value passes through described point when any drainage system subregion measuring point or exceeded combined flow system subregion measuring point water quality monitoring value
Analysis early warning subsystem provides pre-warning signal.
The present invention has the following advantages and beneficial effects: fully consider the actual conditions of monitoring field, establish it is a set of from
" source " arrives the monitoring technology system of the multi-layer of " remittance " --- and " representative items → disposal precinct → end water system " overcome monitoring
It cannot achieve caused by point arrangement is not comprehensive and lacking for recruitment evaluation carried out to the different scale in sponge urban construction pilot area
Fall into, comprehensively and objectively reflect pilot area entirety water quantity and quality situation, and pass through monitoring early-warning system identify in real time, record and
The problem of early warning is run improves monitoring efficiency and monitoring result to propose targeted solution in time
Reliability.
Detailed description of the invention
Fig. 1 is that sponge urban construction pilot area according to the present invention water quantity and quality monitoring location and monitoring and early warning method are shown
It is intended to.
Fig. 2 is embodiment water system measuring point schematic diagram in sponge urban construction pilot area according to the present invention.
Fig. 3 is embodiment disposal precinct measuring point schematic diagram in sponge urban construction pilot area according to the present invention.
Fig. 4 is embodiment representative items measuring point schematic diagram in sponge urban construction pilot area according to the present invention.
Specific embodiment
A specific embodiment of the invention and the course of work are further described with reference to the accompanying drawing.
The positional terms such as the upper, lower, left, right, front and rear in present specification be positional relationship based on the figure and
It establishes.Attached drawing is different, then corresponding positional relationship is also possible to change therewith, therefore cannot be interpreted as with this to protection model
The restriction enclosed.
Sponge city is new generation of city storm water man- agement concept, refers to that city can become as sponge adapting to environment
Change and cope with rainwater bring natural calamity etc. has good elasticity, also referred to as " water elasticity city ".And to reality
For existing " waterlogging, water body be not not black smelly for ponding, heavy rain for light rain " sponge urban construction pilot area, the river and lake in the region Yao Shixian
Drainage Water Quality class index is not less than " water environment quality standard GB3838-2002 " IV class standard, and builds better than sponge city
If preceding water quality, downstream section main indicator must not be lower than the construction object of water index, therefore a point section monitors, find out including
It monitors each starting point, intersection point, terminal section independently or the water quality and quantity situation of interaction is most important.Meanwhile being with pilot region
Boundary, by monitoring into pilot area, pilot area section can judge that water quality and water of the pilot zone convection through river influence out,
And counted by monitoring and warning and early warning, major polluting sources are identified, so as to further to sponge urban construction pilot area
Interior Drainage System Construction or transformation proposes prioritization scheme.
For a sponge urban construction pilot area, it is most important obtain region in rainwater, sewage discharge situation with
And its water system sediments situation.It followed by analyzed, monitored according to acquired data, and it is further proposed that modification scheme.Its
Workflow is as shown in Figure 1.
Based on sponge urban construction pilot area boundary, identification flows into and out all of the sponge urban construction pilot area
Water system delineates corresponding river in each water system and enters flow section and river outlet section, and it is disconnected to become a mandarin in the water-based river
Face and river outlet section lay corresponding river and enter flow section measuring point and river outlet section measuring point, obtain and water system pair respectively
The river answered enters flow section measuring point and river outlet section measuring point and its water and water quality monitoring value.
During this, especially to investigate and analyze and understand that the water-based of sponge urban construction pilot area crosses or diverge point
Situation is flowed, is crossed according to water system and/or tapping condition is by corresponding water system point several sections, and the starting point in section, intersection point, terminal
It arranges corresponding water system section starting point measuring point, intersection point measuring point and terminal measuring point, obtains its corresponding water and water quality monitoring value.
The monitoring section of water system section starting point measuring point, intersection point measuring point and terminal measuring point must can totally and macroscopically reflect water
The quality of water environment situation of system or region.The specific location of each section must can reflect the contamination characteristics of region environment；
Enough representational environmental informations are obtained with least section as far as possible；Feasibility when actual samples must also be considered simultaneously
And convenience.In addition, control monitoring section should also be arranged according to function of water body area, same function of water body area will at least be arranged 1
Monitoring section.Generally, cross section place should avoid slough, backwater zone, at sewage draining exit, and selection straight chanel, riverbed are steady as far as possible
Fixed, water flow stationary, the water surface be broad, without torrent, without shoal at.And make every effort to consistent with hydrology gaging section, to utilize its hydrology
Parameter realizes the combination of water quality monitoring and water quantity monitoring.
Compared by the water and water quality monitoring value of section starting point measuring points several in water system, intersection point measuring point and terminal measuring point,
Obtain corresponding water-based key monitoring section and its key pollutants.
The drainage pipeline networks status for obtaining the sponge urban construction pilot area, according to rainwater and sewage collect and discharge region
Domain sets several disposal precincts, and imports water system according to the end discharge outlet of disposal precinct, and disposal precinct is known by water system is imported
It not and records, and sets disposal precinct measuring point in the end discharge outlet of disposal precinct, obtain disposal precinct corresponding with water system and survey
Point and its water and water quality monitoring value.The end discharge outlet of disposal precinct measures its water by setting flowmeter and/or liquidometer
Amount.Disposal precinct measuring point is practical, and obtain is that rainwater and sewage discharge situation summarize in pilot area.
Sponge urban construction pilot area's representative items and its discharge outlet status are obtained, and imports water system difference by its discharge outlet
Representative items measuring point is arranged in representative items discharge outlet in identification and record, obtain corresponding with water system representative items measuring point and its
Water and water quality monitoring value.
Establish sponge urban construction pilot area water quantity and quality monitoring early-warning system, including measuring point data acquisition subsystem and point
Early warning subsystem is analysed, is respectively used to acquire and analyze measuring point data；The measuring point data includes above-mentioned water system and its corresponding river
Road enters flow section measuring point, river outlet section measuring point, disposal precinct measuring point and representative items measuring point and its water and water quality monitoring
Value；River outlet section measuring point water quality objective value is set by analysis and early warning subsystem, river outlet section measuring point water quality is supervised
Measured value and its target value are provided when outlet section measuring point water quality monitoring value in river is exceeded by analysis and early warning subsystem
Pre-warning signal.
When setting disposal precinct, according to the confluence state that rain pipe and sewage pipe collaborate or shunt, the disposal precinct phase
That answers is divided into drainage system subregion or combined flow system subregion.The drainage system subregion measuring point includes the combined system row
The corresponding combined system pipe end discharge outlet in moisture area.The combined flow system subregion measuring point includes the combined flow system subregion
Corresponding separate system pipe end discharge outlet.Obtain drainage system subregion measuring point or combined flow system subregion measuring point water and
Water quality monitoring value.
At this point, drainage system subregion measuring point and/or separate system row further is set separately by analysis and early warning subsystem
Moisture area measuring point water quality objective value, when any drainage system subregion measuring point or combined flow system subregion measuring point water quality monitoring value are super
When mark, pre-warning signal is provided by analysis and early warning subsystem.
For combined flow system subregion, pipeline includes rain pipe and sewage pipe, is respectively formed Storm Sewer Network and sewage
Pipe network.Its subregion rainwater pipe end discharge outlet and sewage pipe end discharge outlet is set separately in combined flow system subregion, also that is, dividing
The corresponding separate system pipe end discharge outlet of stream disposal precinct includes rainwater pipe end discharge outlet and sewage pipe end discharge outlet.
If all separate systems of sponge urban construction pilot area's inner water drainage system, pass through the water of monitoring rainwater pipe end discharge outlet
Amount, can collect to obtain corresponding rainfall；By monitoring the water of sewage pipe end discharge outlet, can collect to obtain corresponding
Blowdown flow rate.And if when sponge urban construction pilot area inner water drainage system includes separate system and combined system, not only to monitor and
The water of Accumulated Rainwater pipe end discharge outlet, it is also contemplated that when rainfall and non-rainfall sewage pipe end discharge outlet water difference.
When combined flow system subregion is equipped with intercepting sewer and Vatch basin, combined flow system subregion measuring point further includes in combined flow system subregion
Vatch basin measuring point obtains the water and water quality monitoring value of combined flow system subregion measuring point and Vatch basin measuring point.
Storm Sewer Network must not have sewage to be directly discharged into water body；Non- duration of raining, combined system pipe duct must not have the in line water of sewage
Body.Further, the water of rainwater pipe end discharge outlet and sewage pipe end discharge outlet is monitored respectively by analysis and early warning subsystem
Amount, and non-duration of raining rainwater pipe end discharge outlet water is set as zero, when non-duration of raining monitors that rainwater pipe end is discharged
When saliva amount, pre-warning signal is provided by analysis and early warning subsystem.Rather than whether the sewage of duration of raining combined system pipe duct is in line
Then judged by water quality monitoring value.
It can also be by analysis and early warning subsystem according to all disposal precinct measuring point water of non-duration of raining and duration of raining
Amount statistics obtains rainwater and quantity of wastewater effluent.Further, since when lower than rainfall corresponding to annual flow overall control rate, sea
Continuous urban construction region is there is not allowed that rainwater outlet phenomenon, amount of rainfall are also used as early-warning parameters.
Using Hebi City sponge urban construction pilot area as embodiment.The sponge urban construction is flowed into and out by identification
All water systems in pilot area, and analyze it is water-based cross or the tapping condition that diverges, laid at water system integration measuring point 10 altogether (as schemed
Shown in 2).All water systems include the Qihe River, cotton Feng Qu, two branch canal, day Lai Qu and moat, wherein cotton Feng Qu, two branch canal, Tian Laiqu
Moat is imported after the Qihe River diversion.Measuring point S-0 indicates that moat enters measuring point before pilot area, while indicating rising for moat section
Point measuring point；S-1 indicates measuring point at the Qihe River diversion, while indicating that cotton Feng Qu, two branch canal, the starting point measuring point of day Lai Qu and the Qihe River enter examination
Measuring point before point area；S-2 indicates that cotton Feng Qu imports measuring point before moat, while indicating Mian Fengquchu pilot area measuring point；S-3 indicates shield
Fosse measuring point after cotton Feng Qu remittance, while indicating that moat enters measuring point before pilot area；Before S-4 indicates that two branch canal import moat
Measuring point；S-5 indicates moat measuring point after the remittance of two branch canal；S-6 indicates that day Lai Qu imports measuring point before moat；S-7 indicates shield
Fosse measuring point after day Lai Qu remittance；S-8 indicates that moat goes out pilot area measuring point；S-9 indicates that the Qihe River is surveyed after moat imports
Point.
By identification drainage system subregion or the end discharge outlet of combined flow system subregion, and combine manually reconnoitre early period
And investigation, enter river mouth/Vatch basin in disposal precinct and lays at measuring point 33 (as shown in Figure 3) altogether.Monitoring project includes flow, liquid level
And water quality, wherein flow measuring point is the measuring point at combined system subregion Vatch basin at totally 11；Liquid level measuring point is at totally 22, including interflow
It makes at the measuring point 5 at into river mouth and separate system subregion enters at measuring point 17 at river mouth；Water quality measuring point is separate system water quality at totally 22
Measuring point.
Mouth is arranged by identification representative items, is laid at measuring point 23 (Fig. 4) altogether in key project outlet.Monitoring project includes stream
Amount, liquid level and water quality, wherein flow measuring point is combined system stream of items measuring point at totally 15；Liquid level measuring point is separate system at totally 8
Project exports catch-basin measuring point；At water quality measuring point 8, catch-basin measuring point is exported for separate system project.
Water quality monitoring value is the real time measurement of water quality indicator, and index and monitoring method refer to " surface water environment quality mark
It is quasi- " (GB3838-2002) etc., water quality indicator includes NH3- N (ammonia nitrogen), COD (COD), TN (total nitrogen), TP (total phosphorus),
TSS (total suspended solid), pH, DO (dissolved oxygen), T (temperature), conductivity.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. sponge urban construction pilot area water quantity and quality monitoring location method, which is characterized in that the described method includes:
Based on sponge urban construction pilot area boundary, identification flows into and out all water in the sponge urban construction pilot area
System delineates corresponding river in each water system and enters flow section and river outlet section, and enters flow section in the water-based river
Corresponding river is laid with river outlet section and enters flow section measuring point and river outlet section measuring point, is obtained respectively corresponding with water system
River enter flow section measuring point and river outlet section measuring point and its water and water quality monitoring value；
The drainage pipeline networks status for obtaining the sponge urban construction pilot area, sets according to rainwater and collecting for sewage with discharge areas
Fixed several disposal precincts, and water system is imported according to the end discharge outlet of the disposal precinct, by the disposal precinct by remittance water
System's identification and record, and disposal precinct measuring point is set in the end discharge outlet of the disposal precinct, obtain row corresponding with water system
Moisture area measuring point and its water and water quality monitoring value；
Sponge urban construction pilot area's representative items and its discharge outlet status are obtained, and imports water system difference by its discharge outlet
Identification and record are arranged representative items measuring point in the representative items discharge outlet, obtain representative items measuring point corresponding with water system
And its water and water quality monitoring value.
2. sponge urban construction pilot area water quantity and quality monitoring location method according to claim 1, which is characterized in that institute
State method further include:
The water system in the sponge urban construction pilot area is analyzed, if crossing according to water system and/or tapping condition is by the water system point
Dry river section, and the starting point in section, intersection point, terminal arrange corresponding water system section starting point measuring point, intersection point measuring point and terminal measuring point,
Obtain its corresponding water and water quality monitoring value；
Compared by the water and water quality monitoring value of starting point measuring points in section several in the water system, intersection point measuring point and terminal measuring point,
Obtain the water-based key monitoring section and its key pollutants.
3. sponge urban construction pilot area water quantity and quality monitoring location method according to claim 1, which is characterized in that institute
State method further include:
When setting disposal precinct, according to the confluence state that rain pipe and sewage pipe collaborate or shunt, the disposal precinct is corresponding
It is divided into drainage system subregion or combined flow system subregion；The drainage system subregion measuring point includes the drainage system point
The corresponding combined system pipe end discharge outlet in area；The combined flow system subregion measuring point includes that the combined flow system subregion is corresponding
Separate system pipe end discharge outlet；
Obtain the water and water quality monitoring value of the drainage system subregion measuring point or combined flow system subregion measuring point.
4. sponge urban construction pilot area water quantity and quality monitoring location method according to claim 3, which is characterized in that institute
When stating combined flow system subregion equipped with intercepting sewer and Vatch basin, the combined flow system subregion measuring point further includes the separate system row
Vatch basin measuring point in moisture area obtains the water and water quality monitoring of the combined flow system subregion measuring point and Vatch basin measuring point
Value.
5. sponge urban construction pilot area water quantity and quality monitoring location method according to claim 1, which is characterized in that institute
The end discharge outlet for stating disposal precinct measures its water by setting flowmeter and/or liquidometer.
6. sponge urban construction pilot area water quantity and quality monitoring location method according to any one of claims 1 to 4, special
Sign is that the water quality monitoring value is the real time measurement of water quality indicator, and the water quality indicator includes NH3-N、COD、TN、TP、
TSS, pH, DO, T, conductivity.
7. a kind of sponge urban construction pilot area water quantity and quality monitoring early-warning system, which is characterized in that the system comprises measuring points
Data acquisition subsystem and analysis and early warning subsystem are respectively used to acquire and analyze measuring point data；The measuring point data includes such as
Water system described in claim 1 and its corresponding river enter flow section measuring point, river outlet section measuring point, disposal precinct measuring point and allusion quotation
Type project measuring point and its water and water quality monitoring value；River outlet section measuring point water quality is set by the analysis and early warning subsystem
Target value, by the river outlet section measuring point water quality monitoring value and its target value, when the river outlet section measuring point
When water quality monitoring value is exceeded, pre-warning signal is provided by the analysis and early warning subsystem.
8. sponge urban construction pilot area according to claim 7 water quantity and quality monitoring early-warning system, which is characterized in that institute
Stating disposal precinct includes drainage system subregion and/or combined flow system subregion, and the drainage system subregion measuring point includes institute
The corresponding combined system pipe end discharge outlet of drainage system subregion is stated, the combined flow system subregion measuring point includes the shunting
The corresponding separate system pipe end discharge outlet of disposal precinct processed passes through measuring point data acquisition subsystem and obtains the drainage system
The water and water quality monitoring value of subregion measuring point and/or combined flow system subregion measuring point；And it is set by the analysis and early warning subsystem
Drainage system subregion measuring point and/or combined flow system subregion measuring point water quality objective value are determined, when any drainage system subregion is surveyed
When point and/or exceeded combined flow system subregion measuring point water quality monitoring value, pre-warning signal is provided by the analysis and early warning subsystem.
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