CN102253175B - Method for detecting initial rain water quality of drainage system through inversion of turbidity - Google Patents

Method for detecting initial rain water quality of drainage system through inversion of turbidity Download PDF

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Publication number
CN102253175B
CN102253175B CN 201110084998 CN201110084998A CN102253175B CN 102253175 B CN102253175 B CN 102253175B CN 201110084998 CN201110084998 CN 201110084998 CN 201110084998 A CN201110084998 A CN 201110084998A CN 102253175 B CN102253175 B CN 102253175B
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turbidity
water
water quality
total
drainage system
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CN102253175A (en
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程晓波
陈华
潘炜
丁敏
程江
袁述时
张立
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Shanghai Municipal Sewerage Co ltddrainage Design Research Branch
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Shanghai Municipal Sewerage Co ltddrainage Design Research Branch
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Abstract

The invention relates to a method for detecting initial rain water quality of a drainage system through inversion of turbidity, comprising the steps of: 1) before raining, setting a sampling frequency of an automatic turbidity meter for measuring initial rain water turbidity NTU (Nephelometric Turbidity Unit) information of the drainage system in real time in the process of rainfall; 2) sending the initial rain water turbidity NTU information of the drainage system to a control computer; and 3) figuring out a water quality index variation curve of the initial rain water of the drainage system according to a linear or index experiential formula by the control computer, and displaying water quality index variation curve information on a display of the control computer. Compared with the prior art, the method for detecting the initial rain water quality of the drainage system through inversion of turbidity has the advantages of real-time, rapid and accurate on-line monitoring in the quality variation process of the initial rain water and the like.

Description

Detection method with initial rain water quality of drainage system through inversion of turbidity
Technical field
The present invention relates to a kind of water quality detection method, especially relate to a kind of detection method with initial rain water quality of drainage system through inversion of turbidity.
Background technology
Unwatering system be the facilities such as the processing of collection, conveying, water quality of draining and discharge be combined in a certain way overall.The precontamination substrate concentration of rainfall runoff is called the first flush effect higher than the phenomenon in later stage.
Be subject to history, the impact of the principal element such as physical geography and mankind's activity, the littoral unwatering system of Shanghai Central Urban Area Suzhou River mostly is combined flow system, and the heavy rain design reoccurrence period, other cities were on the low side both at home and abroad, surpass the rainfall runoff of unwatering system drainability between storm period, especially the early-stage rainwater pollution load of overflow still lacks effective control and improvement, carried in early-stage rainwater and come from urban surface, a large amount of polluters of municipal effluent and drainage system pipe deposition, after having caused Central Shanghai to surpass 85% point-source pollution being dammed, urban surface water body water correction difficulty strengthens.For this reason, build 5 large-scale rainwater storage ponds in the management of Suzhou River the second stage of the project, reduced discharging the environmental effect of early-stage rainwater pollution load of overflow to the performance storage pond.
It is a pollution control problem extremely complicated and changeable that unwatering system early-stage rainwater pollution load of overflow is controlled, and grasping wherein early-stage rainwater Regular of Water Quality Variation is the core place of this pollution control problem.Be subject to the combined influence of the many factors such as the hydrology, meteorology, sewage composition, underlying surface type, system interception ratio, drainage pipeline sediment, pipe-dredging maintenance, sewerage system early-stage rainwater Regular of Water Quality Variation complexity.
The method of traditional research early-stage rainwater Regular of Water Quality Variation is to take first on-the-spot hand sampling, rear lab analysis.Affected by the sudden factor of rainfall, hand sampling usually can not be carried out in time, and time-consuming, effort, artificial interference impact are large.After the personnel such as also exist are on the scene, rainfall has started a period of time or has finished, and can not obtain in time the early-stage rainwater water sample, and this problem is particularly outstanding between the summer storm period.
Although existing robotization water quality on-line monitoring system is high because of its automaticity, characteristics accurate, the fast monitored data can be provided real-time, stable, reliably, be widely used at present the numerous areas such as industrial waste water water quality monitoring, the Inlet and outlet water water quality monitoring of purification of water quality factory, water quality of river monitoring and drinking water treatment process control.But because the existing robotization water quality on-line monitoring system data analysis cycle is long, the national energy-saving of take reduces discharging the performance assessment criteria chemical oxygen demand COD and ammonia nitrogen is example, the short data analytical cycle of the COD in-line analyzer of U.S. HACH brand is 1 hour, the minimum analysis interval of the large-scale online nitrogen phosphorus analyser TresCon of Germany WTW also, about 10 minutes, can not meet the water quality sampling and analyzing cycle of minute level of research early-stage rainwater Regular of Water Quality Variation needs.
As can be seen here, be subject to the effects limit such as current technology, equipment and personnel, for early-stage rainwater change of water quality process and feature thereof in real time, accurately, also there is bottleneck in fast monitored.
Summary of the invention
Purpose of the present invention be exactly in order to overcome the defect that above-mentioned prior art exists, provide a kind of in real time, quick, the accurate detection method with initial rain water quality of drainage system through inversion of turbidity of on-line monitoring early-stage rainwater change of water quality process.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of detection method with initial rain water quality of drainage system through inversion of turbidity, is characterized in that, comprises the following steps:
1) before the rainfall of robotization turbidimeter, set sample frequency, measure in real time unwatering system early-stage rainwater turbidity NTU information in rainfall;
2) unwatering system early-stage rainwater turbidity NTU information is sent to the control computing machine;
3) control computing machine and calculate the water-quality guideline change curve of unwatering system early-stage rainwater according to linearity or index experimental formula, and the change of water quality calibration curve information is presented on the display of controlling computing machine.
Described water-quality guideline comprises total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS.
Described linearity or index experimental formula are derived as follows:
(1) gather unwatering system early-stage rainwater water sample more than 10 early stage, experimental determination water sample turbidity NTU, total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS;
(2) set up linearity or index experimental formula and the coefficient of determination R of water sample turbidity NTU and total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS water-quality guideline 2;
(3) coefficient of determination R of the experimental formula that foundation is set up 2the good and bad degree of the correlationship between judgement turbidity NTU and correlation water index, work as R 2>=0.7 o'clock, think that the correlativity of experimental formula reaches good above level, this experimental formula can be used, otherwise repeating step (1) and (2), until the enough data samples of accumulative total reach R 2>=0.7 requirement.
Described Linear Empirical is y=ax+b, and wherein x is turbidity value NTU, and a and b are respectively constant, and different water-quality guideline has a, b value separately.
Described index experimental formula is y=ae bx, wherein x is turbidity value NTU, and a and b are respectively constant, and different water-quality guideline has a, b value separately.
Described sample frequency is second level or a minute level.
Compared with prior art, the present invention has the following advantages:
1) adopt online high frequency turbidimeter to measure the early-stage rainwater turbidity, method in conjunction with experimental formula real time inversion early-stage rainwater water quality, overcome long, the bottleneck such as data acquiring frequency is lower, maintenances is complicated of existing monitoring water quality on line device responds time, can be in real time, fast, accurate on-line monitoring early-stage rainwater change of water quality process;
2) can be in time, robotization, in real time, quick and Obtaining Accurate sewerage system early-stage rainwater water quality high frequency change procedure;
3) unwatering system early-stage rainwater water quality data frequency acquisition is high, can reach the soonest a second level;
4) save time, laborsaving, artificial interference impact is little;
5) saved later stage water analysis cost;
6) maintenance cost is low.
The accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is hardware configuration schematic diagram of the present invention;
The curve map that Fig. 3 is total COD in unwatering system turbidity NTU and early-stage rainwater;
The curve map that Fig. 4 is particulate form COD in unwatering system turbidity NTU and early-stage rainwater;
The curve map that Fig. 5 is TOC in unwatering system turbidity NTU and early-stage rainwater;
Fig. 6 is unwatering system turbidity NTU in embodiment 1 and the curve map of total COD;
Fig. 7 is unwatering system turbidity NTU in embodiment 1 and the curve map of particulate form COD;
Fig. 8 is unwatering system turbidity NTU in embodiment 1 and the curve map of total organic carbon TOC;
Fig. 9 is unwatering system turbidity NTU in embodiment 1 and the curve map of total phosphorus TP;
Figure 10 is unwatering system turbidity NTU in embodiment 1 and the curve map of suspended particulate substance SS;
The concentration curve figure that Figure 11 is total COD in the unwatering system early-stage rainwater in embodiment 1;
The concentration curve figure that Figure 12 is particulate form COD in the unwatering system early-stage rainwater in embodiment 1;
The concentration curve figure that Figure 13 is total organic carbon TOC in the unwatering system early-stage rainwater in embodiment 1;
The concentration curve figure that Figure 14 is total phosphorus TP in the unwatering system early-stage rainwater in embodiment 1;
The concentration curve figure that Figure 15 is suspended particulate substance SS in the unwatering system early-stage rainwater in embodiment 1;
The concentration curve figure that Figure 16 is total COD in the unwatering system early-stage rainwater in embodiment 2;
The concentration curve figure that Figure 17 is particulate form COD in the unwatering system early-stage rainwater in embodiment 2;
The concentration curve figure that Figure 18 is total organic carbon TOC in the unwatering system early-stage rainwater in embodiment 2;
The concentration curve figure that Figure 19 is total phosphorus TP in the unwatering system early-stage rainwater in embodiment 2;
The concentration curve figure that Figure 20 is suspended particulate substance SS in the unwatering system early-stage rainwater in embodiment 2.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 0
As shown in Figure 1 and Figure 2, a kind of detection method with initial rain water quality of drainage system through inversion of turbidity comprises the following steps:
Before step 101,1 rainfall of robotization turbidimeter, set sample frequency, measure in real time unwatering system early-stage rainwater turbidity NTU information in rainfall;
Step 102, unwatering system early-stage rainwater turbidity NTU information is sent to and controls computing machine 2;
Step 103, control computing machine 2 calculate the water-quality guideline change curve of unwatering system early-stage rainwater, and the change of water quality calibration curve information are presented on the display of controlling computing machine according to linearity or index experimental formula.
Research is found to have certain correlationship between each pollutant in the unwatering system early-stage rainwater, especially between turbidity NTU and total COD, particulate form COD, total organic carbon TOC, exists good Linear Empirical and correlationship, coefficient of determination R 2all surpass 0.73, reach good correlativity level, as shown in Fig. 3, Fig. 4, Fig. 5.
It should be noted that current robotization turbidimetry data collection cycle is shorter, reach the soonest second sampling interval of level, for example a U.S. R& The fastest sampling interval of back scattering turbidimeter of D company can reach 1 second.This sample frequency enough meets the need of research early-stage rainwater Regular of Water Quality Variation.
Embodiment 1
The enforcement time is on July 11st, 2010, and place is at Shanghai City Jiangsu Road unwatering system, and this enforcement operates according to method mentioned above fully.
(1) gather 12 of Jiangsu Road unwatering system early-stage rainwater water samples early stage, 6 water-quality guideline such as experimental determination water sample turbidity NTU, total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS;
(2) in this example, the exponential type experimental formula is better than Linear Empirical, therefore preferentially set up type of index numbers experimental formula and the coefficient of determination of water sample turbidity NTU with 5 water-quality guideline such as total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS, see Fig. 6-10, correlation formula and the coefficient of determination of each water-quality guideline are respectively:
Total COD---y=213.02e 0.0035x, R 2=0.9236;
Particulate form COD---y=71.488e 0.005x, R 2=0.8765;
Total organic carbon TOC---y=1.9236e 0.0022x, R 2=0.9169;
Total phosphorus TP---y=69.674e 0.0036x, R 2=0.8883;
Suspended particulate substance SS---y=33.596e 0.0039x, R 2=0.9029.
(3) the index experimental formula coefficient of determination R preferentially set up 2all>=0.87, meet coefficient of determination R 2>=0.7 requirement, reached good above level, and this index experimental formula can be used;
(4) under the minimum termination of pumping of Jiangsu Road unwatering system sump, U.S. R&amp is installed at the 0.3m place; The automatic back scattering turbidimeter OBS of D company, set the sample frequency of 5 minutes before rainfall, in the rainfall of 60 minutes by a definite date in real time, continuously, totally 12 of high frequency measurement unwatering system early-stage rainwater turbidity NTU;
(5) utilize index experimental formula that step (3) is set up to be finally inversed by 5 water-quality guideline such as total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS of Jiangsu Road unwatering system early-stage rainwater, the change curve of water quality is shown in Figure 11-15.
Embodiment 2
After embodiment 1, on August 17th, 2010, at Shanghai City Jiangsu Road unwatering system, carried out second case embodiment, this enforcement operates according to method mentioned above fully.
Due to the robotization turbidimeter of having set up index experimental formula and installation in embodiment 1, only carried out following operation in embodiment 2:
(1) set the sample frequency of 5 minutes before rainfall, in the rainfall of 75 minutes by a definite date in real time, continuously, totally 15 of high frequency measurement unwatering system early-stage rainwater turbidity NTU;
(2) utilize index experimental formula that embodiment 1 step (3) is set up to be finally inversed by 5 water-quality guideline such as total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS of Jiangsu Road unwatering system early-stage rainwater, the change curve of water quality is shown in Figure 16-20.

Claims (4)

1. the detection method with initial rain water quality of drainage system through inversion of turbidity, is characterized in that, comprises the following steps:
1) before the rainfall of robotization turbidimeter, set sample frequency, measure in real time unwatering system early-stage rainwater turbidity NTU information in rainfall;
2) unwatering system early-stage rainwater turbidity NTU information is sent to the control computing machine;
3) control computing machine and calculate the water-quality guideline change curve of unwatering system early-stage rainwater according to linearity or index experimental formula, and the change of water quality calibration curve information is presented on the display of controlling computing machine;
Described water-quality guideline comprises total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS;
Described index experimental formula is derived as follows:
(1) gather unwatering system early-stage rainwater water sample more than 10 early stage, experimental determination water sample turbidity NTU, total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS;
(2) set up experimental formula and the coefficient of determination R of water sample turbidity NTU and total COD, particulate form COD, total organic carbon TOC, total phosphorus TP, suspended particulate substance SS water-quality guideline 2;
(3) coefficient of determination R of the experimental formula that foundation is set up 2the good and bad degree of the correlationship between judgement turbidity NTU and correlation water index, work as R 2>=0.7 o'clock, think that the correlativity of experimental formula reaches good above level, this experimental formula can be used, otherwise repeating step (1) and (2), until the enough data samples of accumulative total reach R 2>=0.7 requirement.
2. a kind of detection method with initial rain water quality of drainage system through inversion of turbidity according to claim 1, it is characterized in that, described Linear Empirical is y=ax+b, and wherein x is turbidity value NTU, a and b are respectively constant, and different water-quality guideline has a, b value separately.
3. a kind of detection method with initial rain water quality of drainage system through inversion of turbidity according to claim 1, is characterized in that, described index experimental formula is y=ae bx, wherein x is turbidity value NTU, and a and b are respectively constant, and different water-quality guideline has a, b value separately.
4. a kind of detection method with initial rain water quality of drainage system through inversion of turbidity according to claim 1, is characterized in that, described sample frequency is second level or a minute level.
CN 201110084998 2011-04-06 2011-04-06 Method for detecting initial rain water quality of drainage system through inversion of turbidity Expired - Fee Related CN102253175B (en)

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CN108487369B (en) * 2018-02-25 2019-03-29 广东省水利水电科学研究院 A kind of initial rainwater collection system
CN109709296A (en) * 2019-02-21 2019-05-03 南通大学 A method of quickly suspended state cadmium concentration in continuous estimation water

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1677087A (en) * 2004-04-02 2005-10-05 北京师范大学 Water quality monitoring device and method
CN2852112Y (en) * 2005-09-13 2006-12-27 长春吉大.小天鹅仪器有限公司 Multi-parameter quick analyzer for water quality
CN101281187A (en) * 2008-04-08 2008-10-08 杭州电子科技大学 Water environment monitoring node based on ZigBee wireless technique
CN201392309Y (en) * 2009-03-09 2010-01-27 上海海争电子科技有限公司 Multifunctional water quality detecting device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8958917B2 (en) * 1998-12-17 2015-02-17 Hach Company Method and system for remote monitoring of fluid quality and treatment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1677087A (en) * 2004-04-02 2005-10-05 北京师范大学 Water quality monitoring device and method
CN2852112Y (en) * 2005-09-13 2006-12-27 长春吉大.小天鹅仪器有限公司 Multi-parameter quick analyzer for water quality
CN101281187A (en) * 2008-04-08 2008-10-08 杭州电子科技大学 Water environment monitoring node based on ZigBee wireless technique
CN201392309Y (en) * 2009-03-09 2010-01-27 上海海争电子科技有限公司 Multifunctional water quality detecting device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
城市小区雨水径流污染监测及相关性研究;纪桂霞等;《水资源与水工程学报》;20100430;第21卷(第2期);105-107，112 *
纪桂霞等.城市小区雨水径流污染监测及相关性研究.《水资源与水工程学报》.2010,第21卷(第2期),105-107,112.

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