JP2008210362A - Decision support system for and its running method calculating water pollution load using gis (geographic information system) - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decision support system and its running method for calculating a water pollution load using a GIS. <P>SOLUTION: This decision support system and its running method allow characteristic analysis of a district pollution source by constructing a database of the variety of district pollution sources in a polluting district, in particular, in a rural community, make efficient control for a discharge route of a pollutant possible by providing information capable of getting a generation point of the pollution source, a severe pollution district and an integration process into a river, make water quality predictable through water quality modeling to be easily used as a fundamental data for a water use plan in an arable land and a cultivation area, and support the decision to be accurately determined, when establishing a fundamental countermeasure for environmental control in the rural community. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a decision support system for water pollution load calculation using a Geographic Information System (GIS) and a method for operating the decision support system. More specifically, the present invention relates to characteristics of a local pollution source by constructing a database of pollution sources. For analysis of water pollution load using GIS that supports accurate decision-making when establishing basic policies by utilizing analysis and efficient management of pollutant discharge routes and basic data for water use plans The present invention relates to a decision support system and its operation method.

  As is well known, it is necessary to improve the water quality management system in rural areas due to the increase in idle farmland due to the opening of agricultural products and the deterioration of water quality due to overexploitation in rural areas.

  The report of “Development direction of farmland use management system” by the National Land Research Institute says that the domestic / outside agricultural environment is changing rapidly, and the fear of diversion of farmland, etc. is gradually increasing along with the pressure to release agricultural promotion areas. Pointed out. Therefore, in order to solve such problems, it is necessary to systematically manage the generation and emission of pollutants due to land use in rural areas.

  However, environmental information required for water quality management must be managed simultaneously with a huge amount of related information consisting of attributes, locations and times of various pollution sources. For this reason, there is a problem that it is almost impossible to manage with a processing method using an existing report.

  The present invention has been made in view of the above-described problems of the prior art. By constructing a database of various pollution sources in pollutable areas, particularly in rural areas, it is possible to analyze the characteristics of regional pollution sources and determine the location of the pollution source. In addition, by providing information that can grasp the process of accumulation in rivers and areas where pollution is serious, it is possible to efficiently manage the discharge route of pollutants, and to predict water quality through water quality modeling, thereby Water pollution using GIS, which can be used easily as basic data for water use plans in the culture medium area, and can support accurate decision-making when establishing basic policies for environmental management in rural areas The purpose is to provide a decision support system for load calculation and its operation method.

  The above-described objects and other objects and features of the present invention can be made more concrete by the following detailed description.

  A decision support system for calculating a water pollution load in a rural area using the GIS of the present invention to achieve the above-mentioned object is a decision making process for calculating a water pollution load based on a geographic information system (GIS). In the support system, a geographical figure DB comprising the geographical figure information of the geographical information system; and as attribute information of the geographical figure DB, the target area's village / dong population, livestock production, aquaculture, industry, current state of pollution sources, manure Attribute DB including environmental basic facilities such as treatment facilities and sewage end-of-life treatment facilities, water quality measurement points / attributes related to water quality simulation and load calculation, and connectivity for linking them all; and the geographic graphic DB and attribute DB Based on the current status of pollution sources, environmental basic facilities, water quality measurement points, and simulated water quality data, A system drive unit that calculates the pollution load through the mathematical algorithm and reflects the result in the final reduction scenario and outputs the result; a graphical user interface (GUI) that functions to output the calculated result together with the geographic information; A central control processing procedure for electrically connecting the DBs, the system drive unit, and the GUI to control them collectively.

  In addition, the operation method of the decision support system for calculating the rural water pollution load using the GIS of the present invention uses the above-mentioned decision support system, and a) the relevance of each material from the attribute DB and the geographical figure DB. Analyzing and analyzing the basic geographic information and classifying and constructing the materials; b) calculating and querying the generated load amount, the discharged load amount, and the distribution load amount based on the classified information; ; c) The stage of generating the behavior data of the pollutant using the data through the water quality simulation of the main river and generating the behavior data of the pollutant; d) The load amount of the target site and the behavior data of the pollutant And executing a water quality model according to a reduction scenario desired by the user and obtaining the result, thereby supporting decision making through the result value.

  According to the present invention, it is possible to analyze the characteristics of regional pollution sources through the construction of basic maps and thematic maps of rural terrain information and the construction of a database of various pollution sources in rural areas, and the occurrence location and pollution of pollution sources are serious. Since the accumulation process in the region and river can be grasped, it is possible to efficiently manage the discharge route of pollutants. In addition, since water quality prediction is possible through water quality modeling, it can be easily used as basic data for water use planning in cultivated land and cultivated medium areas, and can be used as a support system when establishing basic policies for environmental management in rural areas. There is an advantage that functions can be executed in full.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments disclosed herein are for illustrating the present invention, and the technical idea of the present invention is not limited to these embodiments.

  FIG. 1 is a block diagram showing the configuration of a decision support system according to an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of the system drive unit of FIG. 1, and FIGS. It is an illustration figure which shows the structure of no geographic figure DB171 and its attribute DB172.

  1 to 4, a decision support system according to an embodiment of the present invention uses a central control processing procedure (hereinafter referred to as “CPU”) 110 as a main memory (hereinafter referred to as “RAM”). 140, a graphical user interface (hereinafter referred to as "GUI") 130 is electrically connected, and a database 170 including a number of DBs 171 and 172 according to the present invention is electrically connected to the RAM 140, and an interface unit The drive unit 120 of the decision support system according to the present invention, which is designed to be compatible with the CPU 110 through 190, is electrically connected.

  A key input unit (not shown) is electrically connected to the interface unit 190, receives various menu selection signals and command signals applied from the key input unit, and is connected through the program routine of the system driving unit 120 and the CPU 110. Manage the calculation, extraction, and display instructions of the data.

  At this time, the CPU 110 receives the link code information for the material extraction from the system driving unit 120 through the interface unit 190, extracts the data already classified by the corresponding code from the database 170, and controls the display process through the GUI 130.

  On the other hand, the drive unit 120 of the decision support system has a module-based configuration. This is characterized by comprising a pollution source status search module 121, a pollution load calculation inquiry module 122, a graphic search module 123, a water quality prediction modeling module 126, and an output module 127, centering on the calculation / processing module 124 (see FIG. 2). These specific operating principles and functions will be described in detail in the system operating method according to the present invention.

  At this time, the graphic search module 123 is a search module for searching and extracting graphic data matched with the coordinate value selected by the user through the key input unit from the geographic graphic DB 171. Here, when the graphic data is output to the screen through the GUI 130, it forms the lowest layer.

  The pollution source current state search module 121 detects, from the geographic graphic DB 171 and the attribute DB 172, pollution source storage data based on the selection of a specific administrative area, wastewater discharge establishment, or facility selected through the key input unit within the area searched by the graphic search module 123. It is a module.

  The pollution load calculation query module 122 is a module that detects load information for each pollution source such as population / livestock / aquaculture / industry / land use constructed from the pollution source status data searched through the pollution source status search module 121 from the attribute DB 172.

  The water quality prediction modeling module 126 is a module for modeling the water quality prediction in consideration of the pollution source and the load amount in the area range searched by the graphic search module 123.

  The calculation / processing module 124 receives the contamination source current state data retrieved from the contamination source current state retrieval module 121 and the contamination source load information retrieved through the contamination load calculation inquiry module 122, and is generated by the contamination source through a pre-constructed mathematical algorithm (described later). This is a module for calculating the coefficient amount, flow coefficient, weighted river shape coefficient, flow delay coefficient, and calculating water quality prediction value through the water quality modeling algorithm. The output module 127 outputs the extracted information to the screen. This is the module to control.

  The specific function of the system drive unit 120 will be described in more detail in the description of the operation method according to the present invention.

  On the other hand, the database unit 170 according to the present invention includes a geographic graphic DB 171 for a large number of topographic information, and an attribute DB 172 as detailed information and related information corresponding to the graphic information. The DBs 171 and 172 described above are shown in FIGS. There is a feature with similar information.

  The DBs 171 and 172 described above also have a function and a role that enable basic data for promptly driving the decision support system according to the present invention and quick decision making. It is also characterized by the processing of geographic information provided in the well-known geographic information system operated by government agencies and various industry-academia research organizations.

  More specifically, the geographic graphic DB 171 according to the present invention is provided with geographical graphic information for environmental basic facilities such as administrative area diagrams, roads, water treatment plants, and urine treatment facilities. Represented in Table 1.

  Further, the attribute DB 172 is characterized by including pollution source status such as population status, livestock status, land use status, wastewater discharge industry status, environmental basic facility status, and water quality status information such as water quality observation points and rainfall observation points. An example is shown in Table 2 below.

  As shown in Table 2 above, the attribute DB 172 according to the present invention is divided into a major classification, a middle classification, and a minor classification item, respectively, and the major classification, middle classification, and minor classification items are classified according to the attribute form and pollution load, respectively. There is a feature classified by basic items for calculation.

  In the decision support system according to an embodiment of the present invention, it is possible to inquire about the results of calculating the generated load amount, the discharged load amount, and the reaching load amount based on the standard basin. In the calculation of pollutant load, in the case of the drainage area stipulated by the Environment Department, it coincides with the border of the administrative boundary, but in the case of the standard basin, the administrative boundary may be divided and included in the basin. It is necessary to calculate the exact occupancy ratio of the village and the dong (basic administrative area unit of Korea).

  In other words, there is a case where the border of the village and the cave when the administrative boundary is divided based on the drainage outlet station of the Environment Department and the administrative boundary based on the standard basin may not match. And calculation is necessary.

  Sources of current status of pollution sources by local government are examined by the city / county that manages the region according to the preparation procedures announced in the technical guideline for total water quality according to pollution sources such as population, livestock, industry, land use, and farms, and submitted to the relevant basin agency. It is like that. Therefore, when the attribute DB 172 included in the decision support system according to an embodiment of the present invention is constructed using the pollution source status data submitted and registered to the basin agency, the database can be constructed more easily. Is possible.

  According to the technical guidelines, a standard basin-administrative area comparison list must be created so that pollution sources examined by administrative unit can be used to calculate the load by standard basin. At this time, when one administrative area is included in two or more standard basins, it is stipulated to be incorporated into the standard basin according to the area ratio.

  Therefore, the decision support system according to the embodiment of the present invention divides the boundary of the standard basin-sato / dong and calculates the ratio of the area after the division to the area before the division, so that Calculate the occupancy rate. At this time, if the area after the division is less than 7% of the area before the division, it is assumed that the error is included in the geographic information graphic itself, and is calculated as being included in the basin having a large divided area. It is preset in the system drive unit 120.

  As described above, the generated load amount is preferentially calculated through the system drive unit 120 using the divided occupation ratio. The pollutant load generated in the target area should be based on the measured basic unit set by an appropriate method reflecting the regional characteristics for each pollution source, such as population, livestock, farms, industry, land use, etc. In principle. At present, however, there is no reliable measurement unit voluntarily set by the city or county (Korean intermediate administrative unit), so the generated load source tentatively announced for each pollution source. Calculate the generated load using the unit. At this time, the generated load amount calculation performed by the system drive unit 120 is classified into the following five types, and the contents thereof are as follows.

  The target substance generation load by the population is calculated by multiplying the population living in the area by the generation load basic unit. At this time, the population is divided into an urbanized population and a non-urbanized population, each of which is divided into a household population and a sales office population, and the basic unit is applied. The calculation is performed as shown in Equation 1 below, and Table 3-1 shows the generated load unit used in Equation 1.

  The amount of generated load due to livestock is calculated as shown in the following formula 2 by applying the total of the generated load unit estimated separately for manure to the type of livestock. Table 3-2 shows the generated load intensity of livestock.

  In principle, the amount of industrial waste generated by wastewater discharge facilities is calculated using the measured flow rate and daily average concentration of the original wastewater before treatment, which is discharged from individual wastewater discharge facilities. Is calculated using the generated load intensity. It can be calculated as shown in Equation 3 below.

土地から発生する発生負荷量は当該地域の地目別土地面積による発生負荷原単位を適用して算定する（表３−３）。畑は地目別面積中、畑と果樹園を含み、敷地は敷地、工場用地、学校用地、道路、鉄道用地、ゴルフ場を除外した体育用地、遊園地、宗教用地、史跡地を含み、その他は鉱泉地、塩田、堤防、溝渠、留池、水道用地、公園、墓地、雑種地を含むものと仮定して土地利用による発生負荷量を算定する。数４。

The amount of generated load generated from land is calculated by applying the generated load intensity based on the land area by area of the area (Table 3-3). The field includes areas and orchards, and the site includes sites, factory sites, school sites, roads, railroads, sports grounds excluding golf courses, amusement parks, religious sites, and historic sites. The amount of generated load due to land use is calculated on the assumption that it includes mineral springs, salt fields, dikes, ditches, reservoirs, water supply lands, parks, cemeteries, and hybrid land. Number 4.

  The discharge load amount is calculated based on the generated load amount described above, taking into account all the processing routes for each pollution source and the reduction efficiency for each treatment facility or method. The treatment efficiency at each treatment facility and the discharge route is the measured value of the discharge amount of public treatment facilities such as sewage end treatment facilities, manure treatment facilities, livestock wastewater public treatment facilities, wastewater end treatment facilities, purification facilities, livestock wastewater facilities The treatment efficiency of individual treatment facilities such as wastewater discharge facilities applies the standard treatment rate, the number of discharged water quality standards, and the allowable discharge standard.

  Living system discharge load by population is urbanized area and non-urbanized area, population of households and business offices, sewerage treatment area and non-sewerage treatment area, classified sewerage pipes and combined sewerage pipes, flushing type and removal type In consideration of the generation source classification and discharge route such as sewage purification treatment facility and single purification treatment facility, untreated, etc., the calculation is made by classification according to the case as shown in FIG. Therefore, the discharge load by the population in the target area is the total of the discharge load calculated separately.

  FIG. 6 shows the discharge load due to livestock. The livestock discharge load is calculated separately for each stage in consideration of the livestock species, treatment method, legal regulations, livestock manure and wastewater treatment methods. Therefore, the total of the values calculated by dividing each stage is the livestock discharge load.

  The discharge load of industrial wastewater is calculated based on the results of wastewater treatment facilities at individual discharge facilities, divided into cases of direct discharge from individual discharge facilities and cases of discharge through environmental basic facilities. However, out of the inflowing wastewater, the amount consigned through the treatment facility outside the pipe and the amount treated in conjunction with the sewage end-of-life treatment facility are excluded in the calculation of the discharge load. The discharge load of the target substance due to landfill leachate is calculated separately and included in the total discharge. FIG. 7 is a schematic diagram of industrial discharge load.

  The discharge load induced from the aquaculture is calculated separately for the discharge route according to the discharge route: the case of direct discharge without going through the treatment facility and the case of discharge through the treatment facility. FIG. 8 is a schematic diagram relating to the calculation of the aquaculture discharge load.

  The discharge load by the boiling point pollution source is set based on the actual discharge amount for the rainfall with a boiling point source generation load unit of 10 mm or more annually due to land use. Therefore, the generated load is 10 mm or more during the storage period, which is the reference flow rate. Calculated by multiplying the boiling point pollution source emission factor set in consideration of the frequency of rainfall. Fig. 9 shows the calculation of the discharge load of the boiling point pollution source land system.

The calculation of the distribution load is obtained by multiplying the value calculated by the above-mentioned calculation basis of the discharge load by the distribution coefficient. The catchment coefficient is obtained through the weighted river shape factor and the catchment delay coefficient. Further, the river shape factor (S _F ) is obtained by the following equation 5 by applying Horton's dimensionless river shape factor as a dimensionless variable of the basin.

加重河川形状係数（Ｓ_Ｒ）は河川の形状による指標で汚染物質が指標面を通じて流出される過程では指標面の特性に影響を受けるために指標面の特性を考慮しなければならない。同一な降雨強度でも流域の土地被覆特性によって流域出口での流量が変わるようになる。したがって、土地被覆別流出率を適用して流れ累積値を計算する。加重河川形状係数は下記の数６を利用して求める。

The weighted river shape factor (S _R ) is an index based on the shape of the river. In the process in which the pollutant flows out through the index surface, it is affected by the characteristics of the index surface. Even at the same rainfall intensity, the discharge at the basin exit will change according to the land cover characteristics of the basin. Therefore, the flow accumulation value is calculated by applying the runoff rate by land cover. The weighted river shape factor is obtained using the following equation (6).

Ｆ：ｉ流域出口での流れ累積値比率
ＦＡＶ_Ｎi：土地被覆別流出率が適用されないｉ流域出口での流れ累積値
ＦＡＶ_Ｗi：土地被覆別流出率を適用したｉ流域出口での流れ累積値
このような方法で加重河川形状係数（Ｓ_Ｒ）を求めると、次の数７を利用して流達遅滞係数を計算できる。

F: Flow cumulative value ratio at the i basin outlet FAV _Ni : Flow accumulation value at the i basin outlet where the land cover runoff rate is not applied FAV _Wi : Flow accumulated value at the i basin outlet applying the land cover runoff rate This When the weighted river shape factor (S _R ) is obtained by such a method, the flow delay coefficient can be calculated using the following equation ( ₇ ).

Ｐ_Ｍi：水質測定地点の実測負荷量（Ｑ_Ｍi×Ｃ_Ｍi）
Ｑ_Ｍi：水質測定地点が位置した流域の流量
Ｃ_Ｍi：水質測定地点の測定水質
Ｐ_Ｔi：流域別計算した排出負荷量
数７を利用すると、流達係数はｋ＝ｅ^-Ψ×ＳＲに表現でき、各流域別に算定した汚染負荷流達遅滞係数（Ψ）と加重河川形状係数（Ｓ_Ｒ）を利用して当該流域の流達係数を算定した後、これを利用して流達負荷量を算定する。

P _Mi : Actual load at the water quality measurement point (Q _Mi × C _Mi )
Q _Mi : Flow rate of the basin where the water quality measurement point is located C _Mi : Measured water quality of the water quality measurement point P _Ti : Using the discharge load quantity number 7 calculated for each basin, the distribution coefficient is expressed as k = e ^{-Ψ x SR} After calculating the catchment coefficient of the basin using the pollutant load lag delay coefficient (Ψ) and the weighted river shape factor (S _R ) calculated for each basin, Calculate.

  Formulas 1, 2, 3, 4, 5, 6, and 7 represent formula algorithms, and the system drive unit 120 includes the formula algorithms described above. Therefore, various variables are extracted from the attribute DB 172 constructed in advance, and these variables are associated with the mathematical algorithm to derive a result value.

  Hereinafter, with reference to FIG. 10 attached, a preferred operation method and an embodiment of the decision support system for calculating the rural water pollution load according to the present invention will be described in detail. Further, as described above, the functional characteristics of each component of the system according to the present invention will be described more specifically together with the present embodiment.

  FIG. 10 shows an example of a menu map of the decision support system according to the present invention. 35A, 35B, 35C, and 35D are flowcharts showing signal flows in the decision support system.

  Referring to this, the decision support system according to the present invention includes a menu tab composed of graphic inquiry, pollution source status, basin measurement data, water quality modeling, water quality prediction modeling, and system management, and detailed items thereof (Fig. 10).

  When the decision support system according to the present invention is driven by the user's key input, an initial screen is output as shown in FIG. 11 through the GUI (130), and a menu tab as shown in FIG. In the lower part, each function icon is activated in the form of a shortcut key and output to the screen. In the lower left and upper left corners, there are user output items that are displayed so that the user can select each detail item of summary geographic information, topographic information, thematic map information, and basin measurement data information display items. It is activated, and the drawing information by the output request item is output on the screen as the largest window. The location information is displayed along with the target area on the start screen, and the administrative name of the target area is displayed at the upper left corner of the largest window and the defense display is displayed at the lower right corner, so that the user can easily grasp the position of the target area. Configured to be possible.

  Therefore, using the menu bar on the main screen, it is possible to query topographic maps, water quality measurement points, pollution source status by administrative region, and load amount, and the function to query and search various information simultaneously on one integrated screen. Therefore, it is possible to provide a GUI environment in which information related to calculation of the overall pollution load can be grasped and managed easily.

  Such a GUI environment can be achieved by the functions of the GUI 130 provided in the present system. Further, the geographical information output on the screen in this way is displayed on the screen when the graphic search module 123 detects the graphic information from the geographical graphic DB 171 and outputs it through the output module 127. At this time, the interface unit 190 is configured to be able to convert and output the signal into a signal form that can be calculated and controlled by the CPU 110.

  In addition, as shown in FIG. 12, the menu tab is composed of graphic inquiry, pollution source status, basin measurement data, water quality modeling, water quality prediction modeling, system management items, and screen maximization, enlargement, reduction, movement, attributes, Consists of a maximum screen and an initialization icon can maximize user convenience.

  FIG. 13 is a detailed recording screen of the menu tab of FIG. 12 that can be used to query graphic geographic information in this decision support system, such as contour lines, rivers (main rivers, detail rivers, lakes), and basin diagrams (large area, Middle sphere, small sphere), numerical topographic maps (roads, buildings, tributaries), soil maps, land use maps, and target area DEM. When the user selects one of these, the graphic search module 123 described above searches the graphic information from the geographical graphic DB 171 and outputs the geographical information requested by the user.

  That is, when an area setting signal and a graphic attribute designation signal are applied to the system drive unit 120 through a key input unit (not shown) and the interface unit 190, the graphic search module 123 extracts graphic information of the corresponding area from the geographic graphic DB 171. Are output on the screen (ST-1, 2, 3, 4).

  FIG. 14 is an example of each detailed list and its output screen when the “pollution source status” menu is selected from the menu tabs of FIG. When the user selects “Sato / dong pollution source status” or “waste water discharge plant”, the geographical information of the village / dong of the administrative area is basically output, and the icon is changed to an icon for which attribute inquiry is possible. At this time, if a desired village / dong is selected, attribute information regarding the area can be inquired. Needless to say, in this case, after the information is detected from the geographic graphic DB 171 and the attribute DB 172 by the contamination source status search module 121 of FIG.

  That is, when a pollution source status inquiry signal for the area is applied to the system driving unit 120 through a key input unit (not shown) and the interface unit 190, the pollution source status search module 121 reads the pollution source data of the corresponding region from the geographic graphic DB 171 and the attribute DB 172. And the detailed attribute information of the corresponding pollution source is extracted and output to the screen (ST-5, 6, 7, 8).

  FIG. 15 shows information that can be acquired when the “sato / dong-specific pollution source status” in the menu tab of FIG. 14 is inquired. The information related to the load calculation is interrelated with the above-mentioned information. The life, livestock, land use, industrial, and aquaculture categorized here are the basis for load calculation.

  FIG. 16 is an example of a screen that is output when the “waste water discharge establishment” is inquired in the pollution source status of FIG. 14, and the industrial waste water discharge establishment and the livestock waste water discharge establishment in the corresponding village / dong can be grasped.

  Among the detailed inventory of the “Pollution Source Status” menu, the aquaculture farm, landfill leachate treatment plant, environmental basic facility manure treatment facility, sewage end treatment facility, etc. are described as basic information related to load calculation. It is constructed by the graphic DB 171 and basically provides basic attribute information regarding the facility.

  FIG. 17 shows an example of each detailed list and its output screen when the “basin measurement material” menu is selected from the menu tabs of FIG. The detailed catalogs illustrated in this figure are the water quality measurement points designated by the Agricultural Science and Technology Institute in 2004 and 2005, the water quality measurement points designated by the Environment Department, the flow measurement points located in the target area, the water level measurement points, and the rainfall measurements. Provides information on the location. The geographical information corresponding to the “basin measurement data” menu in FIG. 17 is also basic data for load calculation, and provides basic attribute information.

  That is, when a basin measurement material output selection signal for the region is applied to the system driving unit 120 through the key input unit (not shown) and the interface unit 190, the basin measurement material and detailed attributes of the region are applied from the geographic graphic DB 171 and the attribute DB 172. Information is extracted and output on the screen (ST-9, 10).

  FIG. 18 is an example of each detail list and its output screen when the “water quality modeling” menu is selected from the menu tabs of FIG. When the user selects “contamination source unit inquiry”, screen output is performed as shown in FIG. It is possible to inquire about the pollution source units classified into 5 types of life, livestock, aquaculture, industrial, land use, for load calculation.

  When the user selects “contamination discharge load amount calculation”, each item classified into five types is displayed as shown in FIG. When the item is selected and “contamination load calculation” is pressed, the contamination load amount calculation process proceeds through the mathematical algorithm constructed in the calculation / processing module 124 together with the corresponding contamination load information. Thus, the pollution load can be calculated for all five types of items.

  Further, when the user selects “calculation load amount calculation”, the contents related to the above-described calculation of the distribution load amount are represented by one image, and the distribution load amount can be calculated based on this.

  FIG. 21 is an example in which a screen for inquiring the amount of wastewater generated is output, and the target land is divided into 11 basins, and the amount of wastewater generated in each basin can be inquired. Then, by comparing the basin-specific comparison with colors having a difference in density, the difference can be confirmed at a glance. Moreover, when the basin divided into 11 is selected by displaying the legend together, it is possible to confirm the wastewater generation amount information corresponding only to the basin.

  FIG. 22 shows an example having the same basin information as the amount of generated upper wastewater. Inquiries by BOD, TN, and TP items for a total of 6 types so that you can see the overall total for living, livestock, aquaculture, industrial, and land use, classifying the generated load for each basin and the entire region into 5 types Is configured to be possible. Again, this can be displayed with color rendering that can be compared by color.

  FIG. 23 and FIG. 24 show examples of providing the same function as the inquiry of the load amount information generated by the detailed menu for the discharge load amount and the flow load amount of the “water quality modeling” menu, respectively. When the pollutant load calculation inquiry module 122 shown in FIG. 2 detects the information from the attribute DB 172, the pollutant load amount is derived through the arithmetic / processing module 124 based on this information based on this information, and this is represented by the interface unit 190, the CPU 110, The screen is output through the display device 160 of the user terminal via the GUI 130.

  That is, when a local water quality modeling selection signal, a specific pollution source unit selection signal, and a load amount calculation signal are applied to the system drive unit 120 through the key input unit (not shown) and the interface unit 190, the pollution load calculation inquiry module 122 Calculates the discharge load amount of the corresponding area from the geographic graphic DB 171 and the attribute DB 172, and changes and outputs graphic information based on the amount of wastewater generated (ST-11, 12, 13, 14, 15, 16, 17, 18, 19, 20).

  FIG. 25 is an example of a screen for providing information on the main river water quality simulation, and FIG. 26 is a schematic diagram of the main river for water quality simulation. In this water quality simulation, for example, the main stream section 31 km section of the upstream basin of the Sobashi River (Korean river name, the same shall apply hereinafter) is defined as a target branch, and this is divided into elements (Elements) spaced 1 km apart, A schematic diagram is constructed considering water quality measurement points. In addition, the basin is divided into owned areas to reflect the inflow and outflow conditions of the pollution sources. The upstream boundary condition of the upstream basin of the Isahashi River uses the total discharge load and the average flow rate of the uppermost basin, and the downstream boundary condition selects the inflow part of the lake, and the area (Reach) is roughly divided into five. In the case of the upstream of the Sobashi River, for example, the Zhangseiten at the 7 km point, the Hongseong River at the 10 km point, the Takahashi River at the 25 km point, and the Jiri River at the 27 km point.

  In addition, the Hongcheng intake is located 4km from the upstream, the bridge water intake is located 22km, and the Hongseong sewage treatment plant is located 13km. The regressive flow that flows into and out of each treatment plant and water intake is taken into account in the calculation process of the standard flow by basin.

  Based on the items selected and considered in this way, the water quality simulation is performed using the Qual2E model of the river water quality simulation model (ST-21, 22, 23, 24).

  FIG. 27 shows an example of a screen on which the result of the water quality simulation performed in this way can be confirmed. After selecting the water quality items by BOD, DO, and TN, and pressing the inquiry button, the numerical values for the water quality items of the river are output through color rendering. If you select a desired point here, detailed water quality simulation results for that point will be displayed, and if you select a graph example in that state, DO, BOD, TN, TP water quality simulation calculation values and actual measurement values for the target river 31 km are graphs (ST-25, 26).

  FIG. 28 shows an example of a detailed list of the “water quality prediction modeling” menu. Outputs information about rivers for which the user performs water quality modeling through the "schematic diagram display" in the detailed catalog. FIG. 29 shows an execution screen example of the pollution reduction scenario. The basin is displayed in the schematic diagram, and BOD, TN, and TP of the discharge load corresponding to the population, livestock, aquaculture, industry, and land use classified into 5 types for each basin are basically based on the water quality simulation mentioned above Has been created as. Here, the user can proceed with a reduction scenario for population, livestock, aquaculture, industry, land use or the whole by changing the value of each desired item (ST-25, 26, 27, 28, 29, 30, 31, 32).

  FIG. 30 is an example of a screen for creating a value designated by the user for the reduction scenario in the Input File for executing the Qual2E model. The basic extension is *. When the desired name is input and “Store” is selected, the process proceeds to the next stage. Then, when the process proceeds to the next stage, a screen as shown in FIG. 31 in which the Qual2E model can be performed is output. Here, after the user inputs the name of the input file previously created up to the extension (* .dat) and then also enters the name of the output file up to the extension, the Qual2E model is executed. FIG. 32 shows an example of a screen for inputting the name of the Output File generated through the model up to the extension after closing the execution window and proceeding to the next stage. Then, a screen as shown in FIG. 33 is output so that the modeling numerical value generated through the execution of the model that proceeds to the next stage can be stored in an Excel format that can be easily utilized by the user. When this process is shifted, the screen shown in FIG. 34 is finally output. Through this screen, the user can confirm whether the input reduction scenario is an accurate value through color rendering and detailed item inquiry about the value calculated through execution of the Qual2E model.

  That is, the system of the present invention can print the screen data output through the display 160 using the plotter 180, and can convert the screen data into Excel and store it (ST-). 33, 34, 35, 36). Also, all screen data output to the display 160 for each stage can be similarly printed and stored in a file format.

  The present invention can be implemented with various modifications. For example, the decision support system according to the present invention is set so that it can be connected to a server such as a government agency or industry-academia research organization that has built a geographic information system through a known communication network such as the Internet, and the geographic information is When changed, it is possible to implement a configuration including a function of downloading and updating geographic information changed in real time or at a constant cycle.

  On the other hand, the embodiment of the present invention is generally described for a specific area, that is, a rural area. However, the present invention is not limited to a rural area, but is an urban area, an industrial area, a mine area, a mountain area. It is possible to calculate the water pollution load of all areas such as fishing village areas.

  According to the present invention, it is possible to analyze the characteristics of regional pollution sources through the construction of basic maps and thematic maps of rural terrain information and the construction of a database of various pollution sources in rural areas, and the occurrence location and pollution of pollution sources are serious. Since the accumulation process in the region and river can be grasped, it is possible to efficiently manage the discharge route of pollutants. In addition, since water quality prediction is possible through water quality modeling, it can be easily used as basic data for water use planning in cultivated land and cultivated medium areas, and can be used as a support system when establishing basic policies for environmental management in rural areas. Functions can be fulfilled. Therefore, it can be said that the industrial applicability of the present invention is extremely high.

  On the other hand, while the invention has been described in terms of several preferred embodiments within the present specification, many variations and modifications will occur to those skilled in the art without departing from the scope and spirit of the invention as disclosed in the appended claims. It should be understood that can be made.

It is a block diagram which shows the structure of the decision support system which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the system drive unit of FIG. It is an illustration figure which shows the structure of geographic figure DB of FIG. It is an illustration figure which shows the structure of attribute DB of FIG. It is a schematic diagram which shows the calculation process of the life system discharge | release load amount which concerns on one Embodiment of this invention. It is a schematic diagram which shows the calculation process of livestock system discharge | release load amount which concerns on one Embodiment of this invention. It is a schematic diagram which shows the calculation process of the industry discharge | release load amount which concerns on one Embodiment of this invention. It is a schematic diagram which shows the calculation process of the culture system discharge | release load amount which concerns on one Embodiment of this invention. It is a schematic diagram which shows the calculation process of the land use type | system | group discharge load amount which concerns on one Embodiment of this invention. It is an illustration figure which shows the menu tab of the decision support system which concerns on one Embodiment of this invention. It is an example of an initial screen of the decision support system concerning one embodiment of the present invention. 12 is an enlarged screen example of a menu tab and a toolbar in FIG. 11. FIG. 11 is an example of a screen showing each detail list when a “graphic inquiry” menu is selected from the menu tabs of FIG. 10. FIG. 11 is an example of a screen showing each detailed list when a “pollution source status” menu is selected from the menu tabs of FIG. 10. FIG. It is an example of an output screen at the time of selecting the "sato / dong separate pollution source present situation" menu among the detailed catalogs of FIG. It is an example of an output screen at the time of selecting a "waste water discharge establishment" menu among the detailed catalogs of FIG. FIG. 11 is an example of a screen showing each detail list when a “basin measurement data” menu is selected from the menu tabs of FIG. 10. FIG. 11 is an example of a screen showing each detail list when a “water quality modeling” menu is selected from the menu tabs of FIG. 10. FIG. It is an example of an output screen at the time of selecting the "contamination source unit" menu among the detailed catalogs of FIG. It is an example of an output screen at the time of selecting the "contamination discharge load amount calculation" menu from the detailed list of FIG. It is an example of an output screen at the time of selecting the "sewage water generation amount inquiry" menu among the detailed catalogs of FIG. It is an example of an output screen at the time of selecting the "generated load amount inquiry" menu among the detailed catalogs of FIG. It is an example of an output screen at the time of selecting the "discharge load amount inquiry" menu among the detailed catalogs of FIG. It is an example of an output screen at the time of selecting the "flow load inquiry" menu from the detailed list of FIG. It is an example of an output screen at the time of selecting a "water quality simulation result inquiry" menu among the detailed catalogs of FIG. It is an example of an output screen which shows water quality simulation used for water quality simulation and water quality prediction modeling according to the present invention. It is an example of an output screen which shows the water quality simulation result of FIG. FIG. 11 is an example of a screen showing each detail list when a “water quality prediction modeling” menu is selected from the menu tabs of FIG. 10. FIG. 29 is an example of an output screen of a scenario 1 stage when a “contamination reduction scenario” menu is selected from the detailed list of FIG. 28. FIG. 29 is an example of an input file creation screen in a scenario 2 stage following FIG. FIG. 31 is an example of a Qual2E model execution screen in a scenario 3 stage following FIG. FIG. 31 is an example of an input screen for the output file in the scenario 4 stage following FIG. FIG. 33 is an example of a screen that is stored in an Excel File in a scenario 5 stage following FIG. 32. It is an example of an output screen which shows the result of the last scenario output after executing all the scenarios following FIG. It is a flowchart which shows the signal flow of the decision support system which concerns on one Embodiment of this invention. It is a flowchart which shows the signal flow of the decision support system which concerns on one Embodiment of this invention. It is a flowchart which shows the signal flow of the decision support system which concerns on one Embodiment of this invention. It is a flowchart which shows the signal flow of the decision support system which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 110 Central control processing action 120 Drive unit of decision support system 121 Pollution source present condition search module 122 Contamination load calculation inquiry module 123 Graphic search module 124 Calculation / processing module 126 Water quality prediction modeling module 127 Output module 130 GUI (graphical user interface)
140 Memory (RAM)
160 Displayer 170 Database 171 Geographical figure DB
172 attribute DB
180 Plotter
190 Interface part

Claims (4)

In a decision support system for water pollution load calculation based on Geographic Information System (GIS),
A geographic figure DB comprising geographic figure information of the geographic information system;
As each attribute information of the geographical figure DB, the population of the target area / dong, population of livestock, aquaculture, industry, current state of pollution sources by land, basic environmental facilities such as manure treatment facilities and sewage end treatment facilities, water quality measurement points / water quality simulation And an attribute DB that includes attributes related to load amount calculation, and connectivity that links all of them;
Based on the pollution source status, environmental basic facilities, water quality measurement points, and water quality simulation data built in the geographic figure DB and attribute DB, the pollution load is calculated through the mathematical algorithm provided for it, and this is reflected in the final reduction scenario. And a system drive unit that outputs the result;
A graphical user interface (GUI) that functions to output the calculated results together with geographic information;
A central control processing procedure for electrically connecting the DBs, the system drive unit, and the GUI and controlling them collectively;
A decision support system for calculating rural water pollution load using GIS, characterized in that The system driving unit includes a graphic search module for searching and extracting graphic data matched with coordinate values selected by a user through a key input unit from a geographical graphic DB;
A pollution source status search module for detecting pollution source storage data by selecting a specific administrative district, wastewater discharge establishment, or facility selected through the key input unit within the area searched by the graphic search module from the geographic graphic DB and the attribute DB;
A pollution load calculation inquiry module for detecting load information for each pollution source such as population / livestock / aquaculture / industry / land use constructed from the pollution source status data retrieved through the pollution source status retrieval module;
A water quality prediction modeling module for modeling the water quality prediction in consideration of the pollution source and the load amount within the area range searched by the graphic search module;
Receives pollution source status data retrieved from the pollution source status retrieval module and pollution source load information retrieved through the pollution load calculation inquiry module, and generates a pollution source-specific coefficient amount, distribution coefficient, weighted river shape factor through a pre-established mathematical algorithm A calculation / processing module for calculating the flow delay coefficient and calculating the water quality prediction value through the water quality modeling algorithm;
An output module for controlling the output of the extracted information on the screen;
A decision support system for calculating a rural water pollution load using GIS according to claim 1, comprising: The mathematical algorithm provided in the system driving unit is:

L _i : River length of i basin A _i : Basin area of i basin

F: Cumulative flow rate ratio at the i basin outlet FAV _Ni : Flow accumulation value at the i basin outlet where the land cover runoff rate is not applied FAV _Wi : Flow accumulated value at the i basin exit applying the land cover runoff rate as well as

P _Mi : Actual load at the water quality measurement point (Q _Mi × C _Mi )
Q _Mi : Flow rate in the basin where the water quality measurement point is located C _Mi : Measured water quality at the water quality measurement point P _Ti : Discharge load calculated for each basin
A decision support system for calculating a rural water pollution load using the GIS according to claim 1, wherein the decision support system comprises: a) Analyzing the relevance of each material from the attribute DB and geographic graphic DB and classifying and building the materials through basic geographic information query;
b) calculating and inquiring the generated load amount, the discharged load amount, and the delivery load amount of the target site based on the classified information;
c) The stage of generating pollutant behavior data by grasping the behavior of pollutants using data through simulation of water quality of major rivers;
d) supporting the decision making through the result value by executing the water quality model according to the reduction scenario desired by the user using the load amount and pollutant behavior data of the target site and obtaining the result;
A method for operating a decision support system for calculating a rural water pollution load using GIS, characterized in that

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