CN102306021B - Joint debugging and joint control method for guaranteeing biosafety of pipe network water quality based on real-time ArcGis - Google Patents
Joint debugging and joint control method for guaranteeing biosafety of pipe network water quality based on real-time ArcGis Download PDFInfo
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- CN102306021B CN102306021B CN2011102344255A CN201110234425A CN102306021B CN 102306021 B CN102306021 B CN 102306021B CN 2011102344255 A CN2011102344255 A CN 2011102344255A CN 201110234425 A CN201110234425 A CN 201110234425A CN 102306021 B CN102306021 B CN 102306021B
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Abstract
The invention relates to a joint debugging and joint control method for guaranteeing biosafety of pipe network water quality based on real-time ArcGis. The method comprises the following steps: (1) importing the residual chlorine data of each water quality monitoring point of a water supply pipe network into a geographic information system; (2) according to the distribution of water works,, secondary pressurized pump stations and transmission and distribution pipe networks, analyzing the spatial variation rule of disinfectant attenuation in the water of current transmission and distribution pipe network to regulate and control residual chlorine of the pipe network; (3) performing secondary analysis on the distribution of residual chlorine of the pipe network, observing whether the most disadvantageous point of the pipe network transmission and distribution satisfy the minimum value of the residual chlorine required for model calculation to control a microbial indicator to be qualified; and (4) if the most disadvantageous point of the pipe network transmission and distribution cannot satisfy the minimum value required for the model, repeating the step (2) until the residual chlorine distribution of the pipe network basically satisfies the microbial indicator control condition at the most disadvantageous point in the pipe network transmission and distribution. Through the invention, the microbial indicator of the pipe network reaches the standard, the spatial distribution of the residual chlorine of the pipe network is more uniform, and the addition of disinfectant and the amount of disinfection byproduct are reduced.
Description
Technical field
What the present invention relates to is the technical method that a kind of ductwork water quality microbial safety ensures, being particularly related to a kind of by the existing secondary pressing pump station water outlet residual chlorine amount of statistical model regulation and control, by the ArcGis(Geographic Information System) the ductwork water quality bio-safety that shows in real time the regional regulating effect that supplies water ensures the method for uniting and adjustment joint control technology.
Background technology
The drinking water quality pollution problem has diversity and complicacy.The potable water of safe and high quality is provided to the user, and water undertaking must be towards whole water system, from the water source, water factory, pipe network take corresponding safety precautions to leading overall process, seeks systematized technical solution.Though and be clouded in the end that underground water supply network and secondary water supply system are positioned at water system, be key and weak link in the safety water supply, also be simultaneously the difficult point that drinking water safety ensures.
China's drinking water sanitary standard (GB5749-2006) namely requires must not contain pathogenic microorganism in the Drinking Water to article one that the Drinking Water hygienic quality requires.Water quality conventional index and limit value article one also are microbiological indicators, the visible importance of microbiological indicator in drinking water quality.The quality problem that exists in the urban water supply, main manifestations be pipe network tip water,tap turbidity, colourity, smell exceeding standard of flavor and the indexs such as microorganism.This is that conventional water purifying process is difficult to remove fully the organism in the water, thereby has increased the microorganisms grow risk in the pipe network because one side pollution of waterhead degree is aggravated; Because pipe network distributing system and secondary water-supply facilities design are safeguarded improper, pipe network leakage, negative pressure suction etc., also there are various microbial contamination phenomenons in terminal temperature difference in addition.Pipe network water and secondary water-supply deteriorating water quality have had a strong impact on the raising of water supply quality.In order to guarantee the water quality in the pipe network course of conveying, water undertaking updates water-purifying process on the one hand, upgrades water supply line material and exploitation scientific maintenance control technique; Generally adopt on the other hand the chlorination technology of residual chlorine concentration in order to sterilize antibacterial in the pipe network water of keeping, this also is present the most effective technology.
According to national potable water regulation and stipulation, pipe network tip residual chlorine concentration need to keep more than or equal to 0.05mg/l.If output water keeps stable residual chlorine concentration, certainly will cause the residual chlorine concentration in the pipe network because larger fluctuation occurs in the variation of operating mode, add higher residual chlorine concentration and not only waste medicament, increase water producing cost, bring the inadaptable of sense of smell to the user, and increased the risk that DBPs exceeds standard.
The optimal control of residual chlorine concentration is the problem of a more complicated in the water supply network, and because complicated topological structure and the inner sanitary condition of water supply network itself, each period of the water consumption of the pressure of city supply water pipeline, flow velocity and node might change, and the operating condition of dynamic change causes that the control of residual chlorine concentration is not easy to accomplish in the pipe network.Existing chlorine dosing control mode is to keep the residual chlorine concentration in the output water constant, because Chlorine Decay, existing method is difficult to guarantee suppress the required residual chlorine concentration of growth of microorganism in the pipe network tip water.
Through the prior art literature search is found, the water supply network Chlorine Decay microvisual model that drives method based on the Lagrange time has been set up in Dong Xiaolei, letter the Kunlun etc., the water supply network Chlorine Decay dynamic simulator system that used Matlab software and Access Database.This simulation system can be carried out dynamic similation to different operating modes, the different constantly Chlorine Decay of water supply network, can also dynamic drafting pipe network chlorine residue isogram and contour surface figure.Although the dynamic chlorine residue equal-value map of drawing by analysis mode result and system can reflect the different constantly Chlorine Decay situations of water supply network, but for a lot of cities multi-water resources, the reality that many booster stations distribute, its isogram and contour surface figure display effect are still complicated, and its decay microvisual model is not based upon under the Various Seasonal condition on the basis with relevant monitoring point microbiological indicator corresponding relation, therefore control pipe network microbial safety is lacked directive significance (Dong Xiaolei, letter the Kunlun etc. based on the water supply network Chlorine Decay simulation of Matlab. Chinese water supply and drainage, 2009,25 (1): 49-52).
Summary of the invention
The present invention is directed to the deficiency of present public supply mains microbial safety safeguards technique method, provide a kind of based on the ArcGis Geographic Information System, the statistical model that utilizes pipe network on-line monitoring point chlorine content and long term monitoring microbiological indicator to set up, by water factory's output water chlorine residue and pipe network secondary pressure pumping plant water outlet chlorine residue being carried out the technical method of visual real-time uniting and adjustment joint control, realize that the pipe network microbiological indicator is up to standard and pipe network chlorine residue spatial and temporal distributions is more even, reduce sanitizer dosage and DBPs growing amount.
The present invention is achieved by the following technical solutions,
The ductwork water quality bio-safety based on real-time ArcGis that the present invention relates to ensures uniting and adjustment joint control method, comprises the steps:
(1) with each Water-quality Monitoring Points chlorine residue data importing Geographic Information System of water supply network;
(2) contrast water factory distributes, secondary pressing pump station distributes and transmission and distribution network distributes, and analyzes the Spatial Variation of sanitizer decay in the current transmission and distribution network water, carries out pipe network chlorine residue regulation and control;
(3) carry out pipe network chlorine residue distribution secondary analysis, observe pipe network transmission ﹠ distribution least favorable point and whether satisfy model to calculate required chlorine residue minimum qualified to control microbiological indicator;
(4) still do not satisfy model requirement minimum such as pipe network transmission ﹠ distribution least favorable point, then repeating step (2) satisfies pipe network transmission ﹠ distribution least favorable point microbiological indicator controlled condition substantially until the pipe network chlorine residue distributes.
Preferably, described step (1) specifically: each Water-quality Monitoring Points chlorine residue data importing Geographic Information System of water supply network is done the spatial analysis of integration, with gained chlorine residue distribution plan Overlapping display on potable water transmission and distribution network schematic diagram.
Preferably, pipe network chlorine residue in the described step (2) is regulated and control specifically: according to the statistical model of pipe network chlorine residue and microbiological indicator such as total number of bacteria or heterotrophic plate counts under the condition of different temperatures of historical data foundation, regulate corresponding regional place water factory or the secondary pressing pump station chlorine-throwed quantity of supplying water.
Preferably, pipe network chlorine residue distribution secondary analysis in the described step (3) is specifically: arrive pipe network transmission ﹠ distribution least favorable according to water factory and put required hydraulic detention time, again collect after the regulation and control water supply network on-line monitoring point chlorine content and import Geographic Information System and do the integration spatial analysis.
Adopt regulate and control method provided by the invention can avoid considering to affect the various complicated factors of pipe network Chlorine Decay, the statistical model that the chlorine content of the relevant monitoring point that accumulates for many years according to this laboratory simultaneously and total number of bacteria and heterotrophic plate counts data are set up can be more near pipe network actual motion effect and effectively predict and the microbiological indicator controlled in the pipe network up to standard; Thereby the complexity of having avoided model in the past is not with to lack the model application that relevant monitoring point microbiological indicator brings strong, shortcoming that accuracy is not high.
Description of drawings
Fig. 1 is chlorine residue initial distribution figure in the potable water transmission and distribution network water;
Fig. 2 is residual disinfectancy agent content and heterotroph graph of a relation and matched curve figure in the pipe network water;
Fig. 3 is the measured value of the heterotroph among Fig. 2 and the residual error schematic diagram between the match value;
Fig. 4 is chlorine residue distribution plan in the rear potable water transmission and distribution network water of regulation and control.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.Following examples will help those skilled in the art further to understand the present invention, but not limit in any form the present invention.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Embodiment
Embodiment is the Water Works scope pipe network chlorine residue regulation and control of Nanshi, Shanghai City.Whole invention implementation procedure is as follows:
Adopt summer (water temperature〉25 ℃) pipe network sampled result, do the chlorine residue index to the regression equation of heterotroph index inhibition, in order to as water system tip chlorine residue control criterion.
Residual error in the mapping expression pipe network water between residual disinfectancy agent content and heterotroph relation and measured value and the match value; In the pipe network water schematic diagram of residual disinfectancy agent content and heterotroph relation and measured value and match value as shown in Figure 2, wherein the residual error schematic diagram between measured value and the match value is as shown in Figure 3; Can be found out by Fig. 2,3, when chlorine content was higher in the water, model was all better to the degree of fitting of real data, but when the chlorine residue level was lower than a certain threshold value, equation can enlarge markedly fitting result and the difference between the actual value of heterotroph content.To be the tip sanitizer exist a critical level to the inhibition of content of microorganisms to the reason that causes this result, and when sanitizer content was lower than this critical value in the water, sanitizer had just lost its effect to growth of microorganism in the inhibiting effect of regeneration.The threshold range that the pipe network water chlorine residue loses the Antimicrobial effect is 0.45～0.50mg/L.
Choose the sample data that chlorine content surpasses above scope, carry out regression fit, the result is as follows:
y?=?609.55?+?615849450.78*exp(-x/0.042)R
2?=?0.71
According to the statistics Calculation Method of Correlation Coefficient Test Table, if want the straight line of above data point match to have 99.9% degree of confidence, need related coefficient greater than 0.597.Obviously, equation coincide fine to fitting effect and the actual value of heterotroph number in the water.
As seen, in the situation that 25 ℃ of water temperatures in summer higher (〉), when residual chlorine amount is lower than 0.45～0.50mg/L in the pipe network water, exist sanitizer to lose the risks that the inhibition of microorganism caused a large amount of outbursts of microorganism.Therefore, when using chloramines to sterilize as water system, should guarantee in the pipe network water chlorine residue greater than 0.45mg/L, and reach microorganism purpose in the control water according to above statistical model by chlorine residue in the control pipe network water.
Step 3 is carried out pipe network chlorine residue distribution secondary analysis, specifically puts required pipe network hydraulic detention time according to pipe network transmission ﹠ distribution least favorable, again collects the rear water supply network on-line monitoring point chlorine content of regulation and control and imports the ArcGis Geographic Information System and do the integration spatial analysis; Then observe least favorable point and whether satisfy model to calculate required chlorine residue minimum qualified with the control microbiological indicator, as shown in Figure 4, overall chlorine residue level descends after the regulation and control, distributes also more even, and has improved pipe network microbial safety safeguard level.
As seen, adopt regulate and control method provided by the invention can avoid considering to affect the various complicated factors of pipe network Chlorine Decay, the statistical model that the chlorine content of the relevant monitoring point that accumulates for many years according to this laboratory simultaneously and total number of bacteria and heterotrophic plate counts data are set up can be more near pipe network actual motion effect and effectively predict and the microbiological indicator controlled in the pipe network up to standard; Thereby the complexity of having avoided model in the past is not with to lack the model application that relevant monitoring point microbiological indicator brings strong, shortcoming that accuracy is not high.
Claims (3)
1. the ductwork water quality bio-safety based on real-time ArcGis ensures uniting and adjustment joint control method, it is characterized in that, comprises the steps:
(1) with each Water-quality Monitoring Points chlorine residue data importing ArcGis Geographic Information System of water supply network;
(2) contrast water factory distributes, secondary pressing pump station distributes and water supply network distributes, and analyzes the Spatial Variation of chlorine decay in the current water supply network water, carries out pipe network chlorine residue regulation and control;
(3) carry out pipe network chlorine residue distribution secondary analysis, observe pipe network transmission ﹠ distribution least favorable point and whether satisfy model to calculate required chlorine residue minimum qualified to control microbiological indicator;
(4) still do not satisfy model requirement minimum such as pipe network transmission ﹠ distribution least favorable point, then repeating step (2) satisfies pipe network transmission ﹠ distribution least favorable point microbiological indicator controlled condition until the pipe network chlorine residue distributes;
Pipe network chlorine residue in the described step (2) is regulated and control specifically: according to the statistical model of pipe network chlorine residue and microbiological indicator under the condition of different temperatures of historical data foundation, regulate corresponding regional place water factory or the secondary pressing pump station chlorine-throwed quantity of supplying water.
2. the ductwork water quality bio-safety based on real-time ArcGis according to claim 1 ensures uniting and adjustment joint control method, it is characterized in that, described step (1) is specifically: each Water-quality Monitoring Points chlorine residue data importing ArcGis Geographic Information System of water supply network is done the spatial analysis of integration, with gained chlorine residue distribution plan Overlapping display on potable water water supply network schematic diagram.
3. the ductwork water quality bio-safety based on real-time ArcGis according to claim 1 ensures uniting and adjustment joint control method, it is characterized in that, pipe network chlorine residue distribution secondary analysis in the described step (3) is specifically: arrive pipe network transmission ﹠ distribution least favorable according to water factory and put required hydraulic detention time, again collect after the regulation and control water supply network on-line monitoring point chlorine content and import the ArcGis Geographic Information System and do the integration spatial analysis.
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| CN103677826B (en) * | 2013-12-09 | 2017-01-04 | 河海大学 | Watershed partitioning based on IDL and Mapinfo and information extracting method |
| CN105825047A (en) * | 2016-03-11 | 2016-08-03 | 广州地理研究所 | Pipe network tip water quality simulation method based on GIS |
| CN108468363B (en) * | 2018-02-08 | 2021-02-19 | 天津华清源水务建设科技有限公司 | Secondary water supply safety guarantee device |
| CN109976270A (en) * | 2019-02-28 | 2019-07-05 | 重庆工商大学 | Municipal sewage treatment cloud management platform |
| CN109933027B (en) * | 2019-02-28 | 2021-11-09 | 重庆工商大学 | Sewage management platform based on plant group water quality monitoring and modeling management |
| CN109976187B (en) * | 2019-02-28 | 2021-08-17 | 重庆工商大学 | Sewage management platform based on sewage biochemical treatment optimization and fine aeration |
| CN111470608A (en) * | 2020-04-08 | 2020-07-31 | 河海大学 | Midway chlorine supplementing optimization method for long-distance drinking water transmission and distribution pipe network |
| CN112610902B (en) * | 2020-12-11 | 2022-07-08 | 吉林建筑大学 | Method for detecting biological scale of pipe network in old city area |
| CN113030303B (en) * | 2021-02-26 | 2023-03-14 | 浙江工业大学 | Prediction method for high-risk area of disinfection byproducts of long-distance water supply pipe network |
| CN114693191B (en) * | 2022-06-01 | 2022-09-02 | 湖南长理尚洋科技有限公司 | Intelligent hydraulic engineering management method and system based on ecological monitoring |
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