CN113284005A - Sewage treatment system classification method and system - Google Patents
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Abstract
The invention discloses a classification method and a classification system for a sewage treatment system, wherein the classification method comprises the following steps: dividing a sewage system into a plurality of areas according to the service range of a sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of a main trunk pipe, the property of a land and the position of a water outlet; acquiring sewage basic data of a parcel; determining the efficiency of the sewage pipe network of the parcel based on the sewage amount according to the sewage basic data; determining the efficiency of the sewage pipe network of the district based on the pollution load according to the sewage basic data; and determining the type of the district according to the district sewage pipe network efficiency based on sewage water amount and the district sewage pipe network efficiency based on pollution load. The advantages are that: and respectively calculating the pipe network collection efficiency by using a water yield analysis method and a pollution load analysis method, comparing and classifying the pipe network collection efficiency, determining the key area and range of a sewage treatment project in the future of the city, providing powerful support for the quality and efficiency improvement work of the city sewage treatment, and providing convenience for the subsequent diagnosis and analysis.
Description
Technical Field
The invention relates to a classification method and a classification system for a sewage treatment system, and belongs to the technical field of urban municipal management.
Background
The town sewage treatment system is an important environment infrastructure and plays a key guarantee role in urban sustainable development. Through years of construction and development, the urban sewage treatment facilities in China basically realize full coverage, and the urban sewage treatment rate is also obviously improved. But there are still some outstanding problems and short boards in town sewage collection and treatment: for example, the construction and maintenance of sewage pipe networks are not in place, especially in the urban-rural areas, old urban areas, urban-rural junctions and other areas; the phenomena of misconnection and mixed connection of sewage are serious, and the performance of a sewage collection system is low; the black and odorous water in cities is not completely eliminated; the inlet water concentration of the urban sewage plant is obviously lower than the designed value, and the sewage treatment system is not normally operated. The problems and the short plates not only influence the normal operation of the town sewage treatment system, but also cause the efficiency of the town sewage treatment system not to be fully exerted, thereby bringing adverse effects to the sustainable development and ecological civilization construction of cities.
In view of the fact that most cities in China currently lack data capable of reflecting the real current situation of a drainage pipe network, the current situation of the pipe network is unclear, the monitoring and regulation level of a drainage system is low, and the drainage pipe network online monitoring system which runs stably for a long time is almost not available, in order to improve the objective accuracy of evaluation, each urban sewage treatment system is used for analyzing and calculating the performance of the sewage pipe network within the range of the sewage treatment system by respectively adopting two methods, namely sewage pipe network collection and treatment water amount analysis, pollution load storage and analysis and the like, on the basis of drainage pipe network basic general survey data. On the basis, scientific and reasonable evaluation results are sought through comprehensive comparison and analysis.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a sewage treatment system classification method and system.
In order to solve the technical problem, the invention provides a classification method of a sewage treatment system, which comprises the following steps:
dividing a sewage system into a plurality of areas according to the service range of a sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of a main trunk pipe, the property of a land and the position of a water outlet;
acquiring basic sewage data of a parcel, wherein the basic sewage data comprises: the method comprises the following steps of (1) controlling the water consumption of a district, the total amount of pollutants generated by each person in the district every day, the discharge amount of industrial wastewater in the district, the pollutant concentration of the industrial wastewater discharged in the district, the flow of a sewage pump station or a sewage main pipe node serving the district, and the flow of the sewage pump station or the sewage main pipe node serving the district;
determining the efficiency of the sewage pipe network of the parcel based on the sewage amount according to the sewage basic data;
determining the efficiency of the sewage pipe network of the district based on the pollution load according to the sewage basic data;
and determining the type of the district according to the district sewage pipe network efficiency based on sewage water amount and the district sewage pipe network efficiency based on pollution load.
Further, the process of dividing the sewage system into a plurality of areas according to the service range of the sewage lift pump station, the distribution condition of the sewage pipe network, the trend of the trunk pipe, the property of the land and the position of the water outlet comprises the following steps:
according to the service range of the sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of the main trunk pipe, the property of the land and the position of a water outlet, the sewage system is divided into a plurality of areas based on the service range of the pump station, the trend of the sewage interception main pipe or the treatment range of a small-sized integrated sewage treatment facility.
Further, the process of determining the effectiveness of the district sewage pipe network based on the amount of sewage water according to the sewage basic data includes:
calculating the total sewage quantity W generated by all the total land types in the plotTotal amount of sewage in parcelIn unit of ten thousand tons/month, the calculation formula is as follows:
Wtotal amount of sewage in parcel＝WWater consumption in the areaX sewage discharge coefficient + WVolume of industrial sewage in district
Calculating the flow W of the sewage pump station or the sewage main pipe serving the areaSewage collection amount in areaUnit ten thousand tons/month;
calculating the efficiency eta of the zonal sewage pipe network based on the sewage water amount through the following formulaAmount of sewage，
ηAmount of sewage＝WSewage collection amount in area/WTotal amount of sewage in parcel×100％
WWater consumption in the areaThe water consumption is the actual comprehensive domestic water consumption of the section, and the unit is ten thousand tons/month; wVolume of industrial sewage in districtThe unit is ten thousand tons/month of sewage generated by actual industrial enterprises in the district; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; the sewage discharge coefficient is evaluated according to the special sewage plans of different cities.
Further, the process of determining the effectiveness of the sewage network based on the pollution load according to the sewage basic data comprises:
calculating the actual sewage discharge load N of the districtArea of filmUnit ton/day, the calculation formula is:
Narea of film＝P×q+WDischarge of industrial wastewater in district×CDistrict industrial wastewater
Calculating actual sewage inflow load N of zoneTablet regionIn unit of ten thousand tons/month, the calculation formula is as follows:
Ntablet region＝WSewage collection amount in area×CSewage inflow of parcel/100-NB
Calculating the efficiency eta of the sewage pipe network based on the pollution load by the following formulaPollution load，
ηPollution load of parcel＝NTablet region/NArea of film×100％
P is the water consumption population of the district, and the unit is ten thousand; q is the total amount of pollutants generated by each person in the tablet area every day, and the unit is gram/person-day; wDischarge of industrial wastewater in districtThe unit is t/d of the discharge amount of industrial wastewater in a plot; cDistrict industrial wastewaterThe concentration of the pollution material in unit mg/L is the sewage discharge concentration of the industrial wastewater in the parcel; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; cSewage inflow of parcelThe unit of mg/L is the flow of a sewage pump station serving the zone or the sewage concentration of a sewage main pipe node.
Further, the process of determining the type of the parcel according to the parcel sewage pipe network efficiency based on the sewage amount and the parcel sewage pipe network efficiency based on the pollution load includes:
according to values of the efficiency of the zoned sewage pipe network based on sewage amount and the efficiency of the zoned sewage pipe network based on pollution load, the efficiency of the zoned sewage pipe network based on sewage amount higher than 100% and the efficiency of the zoned sewage pipe network based on pollution load are respectively divided into high water amount and high load, and the efficiency of the zoned sewage pipe network based on sewage amount lower than 100% and the efficiency of the zoned sewage pipe network based on pollution load are respectively divided into low water amount and low load;
according to the actual sewage pipe network efficiency value of the parcel, classifying the parcel into: high water content high load section, high water content low load section, low water content high load section, low water content low load section.
A sewage treatment system classification system comprising:
the dividing module is used for dividing the sewage system into a plurality of areas according to the service range of the sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of a trunk pipe, the property of a land and the position of a water outlet;
the acquisition module is used for acquiring the basic sewage data of the parcel, and the basic sewage data comprises: the method comprises the following steps of (1) controlling the water consumption of a district, the total amount of pollutants generated by each person in the district every day, the discharge amount of industrial wastewater in the district, the pollutant concentration of the industrial wastewater discharged in the district, the flow of a sewage pump station or a sewage main pipe node serving the district, and the flow of the sewage pump station or the sewage main pipe node serving the district;
the first determining module is used for determining the efficiency of the district sewage pipe network based on the sewage quantity according to the sewage basic data;
the second determination module is used for determining the efficiency of the sewage pipe network of the district based on the pollution load according to the sewage basic data;
and the third determining module is used for determining the type of the district according to the district sewage pipe network efficiency based on sewage water amount and the district sewage pipe network efficiency based on pollution load.
Further, the dividing module comprises a slice region determining module,
the system is used for dividing a sewage system into a plurality of areas based on the service range of a pump station, the trend of a sewage interception main pipe or the treatment range of a small-sized integrated sewage treatment facility according to the service range of a sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of the main pipe, the property of a land and the position of a water outlet.
Further, the first determining module comprises:
a first calculating module for calculating the total sewage quantity W generated by each total land type in the plotTotal amount of sewage in parcelIn unit of ten thousand tons/month, the calculation formula is as follows:
Wtotal amount of sewage in parcel＝WWater consumption in the areaX sewage discharge coefficient + WVolume of industrial sewage in district
A second calculation module for calculating the flow W of the sewage pump station or the sewage main pipe node serving the areaSewage collection amount in areaUnit ten thousand tons/month;
a third calculation module for calculating the efficiency eta of the zonal sewage pipe network based on the sewage amount by the following formulaAmount of sewage，
ηAmount of sewage＝WSewage collection amount in area/WTotal amount of sewage in parcel×100％
WWater consumption in the areaThe water consumption is the actual comprehensive domestic water consumption of the section, and the unit is ten thousand tons/month; wVolume of industrial sewage in districtThe unit is ten thousand tons/month of sewage generated by actual industrial enterprises in the district; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; the sewage discharge coefficient is evaluated according to the special sewage plans of different cities.
Further, the second determining module comprises:
a fourth calculation module for calculating the actual sewage discharge load N of the parcelArea of filmUnit ton/day, the calculation formula is:
Narea of film＝P×q+WDischarge of industrial wastewater in district×CDistrict industrial wastewater
A fifth calculation module for calculating the actual sewage inflow load N of the districtTablet regionIn unit of ten thousand tons/month, the calculation formula is as follows:
Ntablet region＝WSewage collection amount in area×CSewage inflow of parcel/100-NB
A sixth calculation module for calculating the efficiency η of the sewage pipe network based on the pollution load according to the following formulaPollution load，
ηPollution load of parcel＝NTablet region/NArea of film×100％
P is the water consumption population of the district, and the unit is ten thousand; q is the total amount of pollutants generated by each person in the tablet area every day, and the unit is gram/person-day; wDischarge of industrial wastewater in districtThe unit is t/d of the discharge amount of industrial wastewater in a plot; cDistrict industrial wastewaterThe concentration of the pollution material in unit mg/L is the sewage discharge concentration of the industrial wastewater in the parcel; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; cSewage inflow of parcelThe unit of mg/L is the flow of a sewage pump station serving the zone or the sewage concentration of a sewage main pipe node.
Further, the third determining module comprises:
the first classification module is used for respectively classifying the district sewage pipe network efficiency based on the sewage amount higher than 100% and the district sewage pipe network efficiency based on the pollution load into a high water amount and a high load according to the values of the district sewage pipe network efficiency based on the sewage amount and the district sewage pipe network efficiency based on the pollution load, and the district sewage pipe network efficiency based on the sewage amount not higher than 100% and the district sewage pipe network efficiency based on the pollution load are respectively classified into a low water amount and a low load;
and the second classification module is used for classifying the subareas into the following classes according to the actual subarea sewage pipe network efficiency values of the subareas: high water content high load section, high water content low load section, low water content high load section, low water content low load section.
The invention achieves the following beneficial effects:
according to the invention, urban population, sewage quantity, pollutant concentration and the like are taken as data backgrounds, and standard coefficients and standard values determined by national and provincial standards are combined, so that the pipe network collection efficiency is calculated by innovatively utilizing a water quantity analysis method and a pollution load analysis method respectively, and is compared and classified, thereby defining key areas and quality improvement ranges for sewage treatment projects formulated in the future of cities, providing powerful support for the efficiency improvement work of urban sewage treatment, and providing convenience for the subsequent diagnosis and analysis.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic diagram of the average pipe network performance-water volume method (%) for each month of the sewage treatment system area in an embodiment;
FIG. 3 is a graph of average mesh performance-water method (%) for each zone in an embodiment;
FIG. 4 is a schematic view of an average pipe network efficiency-load method (%) for each month of a sewage treatment system area in an embodiment;
FIG. 5 is a graph of the average net performance-loading (%) for each zone in the examples.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in the attached figure 1, the classification method of the sewage treatment system disclosed by the invention comprises the following steps:
s1: a sewage system zoning zone;
s2: collecting, analyzing and sorting basic data;
s3: calculating the pipe network collection efficiency by a sewage pipe network water collection amount analysis method;
s4: calculating the collecting efficiency of the sewage pipe network by using a sewage pipe network storage pollution load analysis method;
s5: and (6) classifying.
The sewage system partitioning area in the step S1 is to further clarify the balance of water supply and drainage in the sewage treatment system area, and to comb the operation efficiency of the sewage system, and to partition the sewage system into a plurality of partitioning areas on the basis of comprehensively considering the service range of the water lift pump station, the distribution of the sewage pipe network, the trend of the trunk pipe, the land property, the position of the drainage outlet, and the like. And dividing the zone by adopting a control unit dividing method. The division method comprises the steps that the range of the whole sewage treatment system is used as a primary control unit, the sewage basin is used as a secondary control unit division basis, and the service range of a pump station, the trend of a sewage interception main pipe or the treatment range of a small sewage treatment facility is used as a tertiary control unit division basis.
The basic data collection, analysis and arrangement in S2 described above requires data mainly including: the domestic water consumption, the industrial sewage production amount, the total sewage amount of the sewage plant and the key nodes (such as a pump station, a small sewage treatment facility and the like), the population number of each plot, the concentration value of industrial sewage pollutants, the concentration value of pollutants of the sewage plant and the key nodes (such as the pump station, the small sewage treatment facility and the like) and the like after the plot is divided. The data lays a data foundation for calculating the efficiency of the pipe network later, and can carry out preliminary analysis on the sewage systems of each district.
The method for analyzing the collected water volume of the sewage pipe network in the step S3 has the basic idea that the sewage production volume converged into the sub-drainage area is analyzed and compared with the actual sewage delivery volume of the key node (pump station or main pipe) of each sub-drainage sub-area, so as to measure and calculate the collection efficiency of the sewage pipe network of the key node (pump station or main pipe) of each drainage sub-area. The calculation method is as follows:
1) actual discharge amount of sewage
WTotal amount of wastewater＝WAmount of water usedX sewage discharge coefficient + WAmount of industrial sewage (1)
2) Sewage pipe network efficiency in sewage plant service range
ηGeneral assembly＝WWater inflow of sewage plant and integrated equipment/WTotal amount of wastewater×100％ (2)
3) District sewage pipe network efficiency
ηA＝WSewage collection amount of A sheet area/WTotal amount of sewage in zone A×100％ (3)
Wherein: wAmount of water usedThe unit is ten thousand tons/month for the water consumption of the actual comprehensive life;
Wamount of industrial sewageThe unit is ten thousand tons/month which is the sewage amount generated by an actual industrial enterprise;
Wtotal amount of wastewaterThe total sewage quantity generated for each general type land is in unit of ten thousand tons/month;
Wtotal amount of sewage in zone AThe total sewage quantity generated by each total land type in the plot is ten thousand tons/month;
Wwater intake of sewage plantThe unit is ten thousand tons/month for the actual running water inflow of the sewage plant;
Wsewage collection amount of A sheet areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node;
ηgeneral assemblyThe efficiency of the sewage pipe network in the service range of the sewage plant is unit percent.
ηAIs the sewage pipe network efficiency in the A zone in unit percent.
The sewage discharge coefficient is reasonably valued according to the special sewage plans of different cities.
The method for analyzing the storage pollution load of the sewage pipe network of S4 has the basic idea that on the basis of control unit division, the pollution load generation amount in each control unit is calculated according to the equivalent of the unit service population and the per-capita pollution load, the actual pollution load conveying amount is calculated according to the sewage concentration and the sewage conveying amount of each control unit key node (pump station or main pipe) of the sewage treatment system, and then the sewage pipe network efficiency of each control unit is obtained by comparing the two. The calculation method is as follows:
1) actual sewage discharge load:
Npractice of＝P×q+WDischarge of industrial waste water×CIndustrial waste water (4)
2) Actual water inlet load of a sewage plant:
Nplant (S.A.)＝WWater intake of sewage plant×CInfluent water of sewage plant/100 (5)
3) Sewage pipe network efficiency in the sewage plant service range:
ηgeneral assembly＝NPlant (S.A.)/NPractice of×100％ (6)
4) Actual sewage inflow load of the A zone:
NA＝Wsewage collection amount of A sheet area×CSewage inflow of parcel/100-NB (7)
5) Sewage pipe network efficiency in district:
ηA＝NA/Npractice of×100％ (8)
Wherein: p is water using population, and the unit is ten thousand;
q is the total amount of pollutants generated by each person every day, and can refer to national pollution source census data in grams/person-day;
Wdischarge of industrial waste waterThe unit is t/d of the discharge amount of industrial wastewater in a plot;
Cindustrial waste waterThe concentration of the pollution material in unit mg/L is the sewage discharge concentration of the industrial wastewater in the parcel;
Cinfluent water of sewage plantThe unit of the concentration of inlet water for the actual operation of a sewage plant is mg/L;
Csewage inflow of parcelThe unit mg/L is the flow of a sewage pump station serving the zone or the sewage concentration of a sewage main pipe node;
Nplant (S.A.)The unit is t/d for the actual water inlet pollution load of the sewage plant;
NAthe unit t/d is the sewage pump station flow of the service area A or the sewage main pipe node water inlet pollution load;
NBthe unit t/d is the pollutant load of high-concentration sewage such as garbage percolate, excrement sewage and the like which are directly discharged into a collecting tank of a pump station for collection from the tail end of the pump station;
ηgeneral assemblyThe efficiency of a sewage pipe network in the service range of a sewage plant is unit percent;
ηAis the sewage pipe network efficiency in the A zone in unit percent.
The classification of S5 provides convenience for subsequent diagnostic analysis, and aims to evaluate and analyze the sewage treatment subsystem sub-areas in four categories according to the calculated sewage network efficiency by the two methods. The method is characterized in that the sewage pipe network efficiency calculated by the sewage pipe network collecting water amount analysis method higher than 100% and the pipe network collecting efficiency calculated by the sewage pipe network collecting water amount analysis method higher than 100% are respectively called high water amount and high load, the sewage pipe network efficiency calculated by the sewage pipe network collecting water amount analysis method lower than 100% and the pipe network collecting efficiency calculated by the sewage pipe network collecting water amount analysis method lower than 100% are respectively called low water amount and low load, and the four types are as follows: high water load, low water load, high water load, low water load. After judging which type each partition belongs to, according to different problems possibly appearing in different types, the partition to which the partition belongs is subjected to targeted investigation and numerical simulation to find out the position of a key problem, and targeted solution measures and schemes are provided, so that the efficiency of a sewage treatment system is improved, and the quality improvement and the efficiency improvement of a sewage treatment plant are realized.
Correspondingly, the invention also provides a sewage treatment system classification system, which comprises:
the dividing module is used for dividing the sewage system into a plurality of areas according to the service range of the sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of a trunk pipe, the property of a land and the position of a water outlet;
the acquisition module is used for acquiring the basic sewage data of the parcel, and the basic sewage data comprises: the method comprises the following steps of (1) controlling the water consumption of a district, the total amount of pollutants generated by each person in the district every day, the discharge amount of industrial wastewater in the district, the pollutant concentration of the industrial wastewater discharged in the district, the flow of a sewage pump station or a sewage main pipe node serving the district, and the flow of the sewage pump station or the sewage main pipe node serving the district;
the first determining module is used for determining the efficiency of the district sewage pipe network based on the sewage quantity according to the sewage basic data;
the second determination module is used for determining the efficiency of the sewage pipe network of the district based on the pollution load according to the sewage basic data;
and the third determining module is used for determining the type of the district according to the district sewage pipe network efficiency based on sewage water amount and the district sewage pipe network efficiency based on pollution load.
The partitioning module includes a tile region determining module,
the system is used for dividing a sewage system into a plurality of areas based on the service range of a pump station, the trend of a sewage interception main pipe or the treatment range of a small-sized integrated sewage treatment facility according to the service range of a sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of the main pipe, the property of a land and the position of a water outlet.
The first determining module includes:
a first calculating module for calculating the total sewage quantity W generated by each total land type in the plotTotal amount of sewage in parcelIn unit of ten thousand tons/month, the calculation formula is as follows:
Wtotal amount of sewage in parcel＝WWater consumption in the areaX sewage discharge coefficient + WVolume of industrial sewage in district
A second calculation module for calculating the flow W of the sewage pump station or the sewage main pipe node serving the areaSewage collection amount in areaUnit ten thousand tons/month;
a third calculation module for calculating the efficiency eta of the zonal sewage pipe network based on the sewage amount by the following formulaAmount of sewage，
ηAmount of sewage＝WSewage collection amount in area/WTotal amount of sewage in parcel×100％
WWater consumption in the areaThe water consumption is the actual comprehensive domestic water consumption of the section, and the unit is ten thousand tons/month; wVolume of industrial sewage in districtThe unit is ten thousand tons/month of sewage generated by actual industrial enterprises in the district; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; sewage discharge coefficient rootValues are taken according to the special sewage planning of different cities.
The second determining module includes:
a fourth calculation module for calculating the actual sewage discharge load N of the parcelArea of filmUnit ton/day, the calculation formula is:
Narea of film＝P×q+WDischarge of industrial wastewater in district×CDistrict industrial wastewater
A fifth calculation module for calculating the actual sewage inflow load N of the districtTablet regionIn unit of ten thousand tons/month, the calculation formula is as follows:
Ntablet region＝WSewage collection amount in area×CSewage inflow of parcel/100-NB
A sixth calculation module for calculating the efficiency η of the sewage pipe network based on the pollution load according to the following formulaPollution load，
ηPollution load of parcel＝NTablet region/NArea of film×100％
P is the water consumption population of the district, and the unit is ten thousand; q is the total amount of pollutants generated by each person in the tablet area every day, and the unit is gram/person-day; wDischarge of industrial wastewater in districtThe unit is t/d of the discharge amount of industrial wastewater in a plot; cDistrict industrial wastewaterThe concentration of the pollution material in unit mg/L is the sewage discharge concentration of the industrial wastewater in the parcel; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; cSewage inflow of parcelThe unit of mg/L is the flow of a sewage pump station serving the zone or the sewage concentration of a sewage main pipe node.
The third determining module includes:
the first classification module is used for respectively classifying the district sewage pipe network efficiency based on the sewage amount higher than 100% and the district sewage pipe network efficiency based on the pollution load into a high water amount and a high load according to the values of the district sewage pipe network efficiency based on the sewage amount and the district sewage pipe network efficiency based on the pollution load, and the district sewage pipe network efficiency based on the sewage amount not higher than 100% and the district sewage pipe network efficiency based on the pollution load are respectively classified into a low water amount and a low load;
and the second classification module is used for classifying the subareas into the following classes according to the actual subarea sewage pipe network efficiency values of the subareas: high water content high load section, high water content low load section, low water content high load section, low water content low load section.
The following takes a certain sewage treatment system of Guangxi Zhuang autonomous region as an example to illustrate the specific implementation steps of the invention:
s1: sewage system zoning
The sewage treatment system range is divided into primary control units, 6 secondary control units (JN1, JN2, JN3, JN4, JN5 and JN6) are divided under the sewage drainage basin, and the JN6 is divided into 4 tertiary control units (JN6-1, JN6-2, JN6-3 and JN6-4) according to the pump station service range, the sewage interception main pipe trend or the treatment range of the small sewage treatment facility.
S2: basic data collection and analysis and sorting
The implementation case mainly needs data as follows: the domestic water consumption, the industrial sewage production amount, the total sewage amount of the sewage plant and the key nodes (such as a pump station, a small sewage treatment facility and the like), the population number of each plot, the concentration value of industrial sewage pollutants, the concentration value of pollutants of the sewage plant and the key nodes (such as the pump station, the small sewage treatment facility and the like) and the like after the plot is divided.
The domestic water consumption, sewage amount and the like are annual data (1 month in 2019-4 months in 2020) day by day, and the daily average value of each month is taken as calculation data; the population of each parcel is calculated according to the parcel area and the population density; the concentration values of the pollutants and the like are annual data day by day (9 months-2020 months and 4 months in 2019), the monthly daily average value is taken as calculation data, and two pollutants of COD and ammonia nitrogen are selected as analysis objects in the case of the method.
S3: method for analyzing water collection amount of sewage pipe network and calculating pipe network collection efficiency
The collecting efficiency of the sewage pipe network calculated by the sewage pipe network collecting water amount analysis method (water amount method) is shown in fig. 2 and 3, and is divided into months and partitioned areas. The horizontal line represents the total average pipe network performance.
S4: method for analyzing storage pollution load of sewage pipe network and calculating pipe network collection efficiency
The collecting efficiency of the sewage pipe network calculated by the sewage pipe network storage pollution load analysis method (load method) is shown in fig. 4 and 5, and is divided into months and zones.
S5: typed diagnostic analysis
According to the method for defining high load and the like described above, each tile is divided into four fixed types:
TABLE 1 type of each region
The pipe network efficiency calculated by the JN6-2 water quantity method is far less than 100%, but the pipe network efficiency calculated by the load method is basically equal to 100%, and the pipe network efficiency does not belong to the four types.
(1) "high Water and high load" analytical diagnostics
Problems that may exist within a tile of this type are: the drainage system in the area is not clear in cutting and is divided into a large-range flow-combining area, so that a large amount of rainwater enters a sewage treatment system in rainy days; a large number of mixed joints of the pipe network exist in the block area, so that the efficiency is high; the district has more industrial enterprises with high pollution discharge load, and the load efficiency is higher because the industrial enterprises are not added into the actual generated load in the calculation; the load of mixed external water is high, and particularly, mixed river water with poor water quality (broken sewage interception pipes along the river) causes the calculated load efficiency to be high.
The specific conditions and theoretical analysis of the subareas are integrated, and the severity of the problems of the high-water-content high-load subareas is obtained by the following steps: drainage system > groundwater infiltration > river water backflow > misconnection.
(2) "high water Low load" analysis diagnosis
Problems that may exist within a tile of this type are: the drainage system in the area is not clear in cutting and is divided into a large-range flow-combining area, so that a large amount of rainwater enters a sewage treatment system in rainy days; data such as the buried depth of the pipeline are arranged, and the underground normal water level is higher than the height of the pipeline, so that the risk of underground water infiltration is high; the water quantity efficiency of the pipe network in the flood season is increased, which indicates that the water surface of the river channel rises in the flood season to cause the river water to flow backwards and enter the pipe network, and finally the water inlet concentration of the sewage plant is reduced.
The specific conditions and theoretical analysis of the subareas are integrated, and the severity of the problems of the high-water-content low-load subareas is obtained by the following steps: drainage system > groundwater infiltration > river water backflow > misconnection.
(3) "Low Water Low load" analysis diagnostics
Problems that may exist within a tile of this type are: partial urban villages and river edge banks in the parcel have river resident water outlets and split-flow sewage straight discharge ports, partial areas have more phenomena that sewage cannot be effectively connected into a pipe network, and the direct discharge rate of the sewage is high; the wrong and mixed connection of the pipeline system is checked, and the wrong and mixed connection rate is higher; and (3) the data such as the buried depth of the pipeline are collated, and the underground normal water level is higher than the pipeline elevation, so that the underground water infiltration risk is high.
The specific conditions and theoretical analysis of the subareas are integrated, and the severity of the problems of the low-water-quantity low-load subareas is obtained by the following steps: the sewage is directly discharged, the mixed grafting is carried out in a staggered mode, the underground water infiltration is carried out, and the river water is reversely poured.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of classifying a wastewater treatment system, comprising:
dividing a sewage system into a plurality of areas according to the service range of a sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of a main trunk pipe, the property of a land and the position of a water outlet;
acquiring basic sewage data of a parcel, wherein the basic sewage data comprises: the method comprises the following steps of (1) controlling the water consumption of a district, the total amount of pollutants generated by each person in the district every day, the discharge amount of industrial wastewater in the district, the pollutant concentration of the industrial wastewater discharged in the district, the flow of a sewage pump station or a sewage main pipe node serving the district, and the flow of the sewage pump station or the sewage main pipe node serving the district;
determining the efficiency of the sewage pipe network of the parcel based on the sewage amount according to the sewage basic data;
determining the efficiency of the sewage pipe network of the district based on the pollution load according to the sewage basic data;
and determining the type of the district according to the district sewage pipe network efficiency based on sewage water amount and the district sewage pipe network efficiency based on pollution load.
2. The sewage treatment system classification method according to claim 1, wherein the process of dividing the sewage system into a plurality of zones according to the service range of the sewage lift pump station, the distribution of the sewage pipe network, the trend of the trunk pipe, the properties of the land and the position of the water outlet comprises:
according to the service range of the sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of the main trunk pipe, the property of the land and the position of a water outlet, the sewage system is divided into a plurality of areas based on the service range of the pump station, the trend of the sewage interception main pipe or the treatment range of a small-sized integrated sewage treatment facility.
3. The sewage treatment system classification method of claim 1, wherein the process of determining the effectiveness of the zoned sewer network based on the amount of sewage based on the sewage base data comprises:
calculating the total sewage quantity W generated by all the total land types in the plotTotal amount of sewage in parcelIn unit of ten thousand tons/month, the calculation formula is as follows:
Wtotal amount of sewage in parcel＝WWater consumption in the areaX sewage discharge coefficient + WDistrict industryAmount of sewage
Calculating the flow W of the sewage pump station or the sewage main pipe serving the areaSewage collection amount in areaUnit ten thousand tons/month;
calculating the efficiency eta of the zonal sewage pipe network based on the sewage water amount through the following formulaAmount of sewage，
ηAmount of sewage＝WSewage collection amount in area/WTotal amount of sewage in parcel×100％
WWater consumption in the areaThe water consumption is the actual comprehensive domestic water consumption of the section, and the unit is ten thousand tons/month; wVolume of industrial sewage in districtThe unit is ten thousand tons/month of sewage generated by actual industrial enterprises in the district; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; the sewage discharge coefficient is evaluated according to the special sewage plans of different cities.
4. The wastewater treatment system classification method of claim 3, wherein the process of determining the effectiveness of the zonal sewer network based on the wastewater base data comprises:
calculating the actual sewage discharge load N of the districtArea of filmUnit ton/day, the calculation formula is:
Narea of film＝P×q+WDischarge of industrial wastewater in district×CDistrict industrial wastewater
Calculating actual sewage inflow load N of zoneTablet regionIn unit of ten thousand tons/month, the calculation formula is as follows:
Ntablet region＝WSewage collection amount in area×CSewage inflow of parcel/100-NB
Calculating the efficiency eta of the sewage pipe network based on the pollution load by the following formulaPollution load，
ηPollution load of parcel＝NTablet region/NArea of film×100％
P is the water consumption population of the district, and the unit is ten thousand; q is the total amount of pollutants generated by each person in the tablet area every day, and the unit is gram/person-day; wWork in one areaDischarge of industrial wastewaterThe unit is t/d of the discharge amount of industrial wastewater in a plot; cDistrict industrial wastewaterThe concentration of the pollution material in unit mg/L is the sewage discharge concentration of the industrial wastewater in the parcel; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; cSewage inflow of parcelThe unit of mg/L is the flow of a sewage pump station serving the zone or the sewage concentration of a sewage main pipe node.
5. The sewage treatment system classification method of claim 1, wherein the process of determining the type of the parcel based on the parcel sewage network efficiency based on the volume of sewage and the parcel sewage network efficiency based on the pollution load comprises:
according to values of the efficiency of the zoned sewage pipe network based on sewage amount and the efficiency of the zoned sewage pipe network based on pollution load, the efficiency of the zoned sewage pipe network based on sewage amount higher than 100% and the efficiency of the zoned sewage pipe network based on pollution load are respectively divided into high water amount and high load, and the efficiency of the zoned sewage pipe network based on sewage amount lower than 100% and the efficiency of the zoned sewage pipe network based on pollution load are respectively divided into low water amount and low load;
according to the actual sewage pipe network efficiency value of the parcel, classifying the parcel into: high water content high load section, high water content low load section, low water content high load section, low water content low load section.
6. A sewage treatment system classification system, comprising:
the dividing module is used for dividing the sewage system into a plurality of areas according to the service range of the sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of a trunk pipe, the property of a land and the position of a water outlet;
the acquisition module is used for acquiring the basic sewage data of the parcel, and the basic sewage data comprises: the method comprises the following steps of (1) controlling the water consumption of a district, the total amount of pollutants generated by each person in the district every day, the discharge amount of industrial wastewater in the district, the pollutant concentration of the industrial wastewater discharged in the district, the flow of a sewage pump station or a sewage main pipe node serving the district, and the flow of the sewage pump station or the sewage main pipe node serving the district;
the first determining module is used for determining the efficiency of the district sewage pipe network based on the sewage quantity according to the sewage basic data;
the second determination module is used for determining the efficiency of the sewage pipe network of the district based on the pollution load according to the sewage basic data;
and the third determining module is used for determining the type of the district according to the district sewage pipe network efficiency based on sewage water amount and the district sewage pipe network efficiency based on pollution load.
7. The wastewater treatment system classification system of claim 6, wherein the partitioning module includes a tile region determination module,
the system is used for dividing a sewage system into a plurality of areas based on the service range of a pump station, the trend of a sewage interception main pipe or the treatment range of a small-sized integrated sewage treatment facility according to the service range of a sewage lifting pump station, the distribution condition of a sewage pipe network, the trend of the main pipe, the property of a land and the position of a water outlet.
8. The wastewater treatment system classification system of claim 7, wherein the first determination module comprises:
a first calculating module for calculating the total sewage quantity W generated by each total land type in the plotTotal amount of sewage in parcelIn unit of ten thousand tons/month, the calculation formula is as follows:
Wtotal amount of sewage in parcel＝WWater consumption in the areaX sewage discharge coefficient + WVolume of industrial sewage in district
A second calculation module for calculating the flow W of the sewage pump station or the sewage main pipe node serving the areaSewage collection amount in areaUnit ten thousand tons/month;
a third calculation module for calculating the efficiency eta of the zonal sewage pipe network based on the sewage amount by the following formulaWaste waterThe amount of water is controlled by the control unit,
ηamount of sewage＝WSewage collection amount in area/WTotal amount of sewage in parcel×100％
WWater consumption in the areaThe water consumption is the actual comprehensive domestic water consumption of the section, and the unit is ten thousand tons/month; wVolume of industrial sewage in districtThe unit is ten thousand tons/month of sewage generated by actual industrial enterprises in the district; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; the sewage discharge coefficient is evaluated according to the special sewage plans of different cities.
9. The wastewater treatment system classification system of claim 8, wherein the second determination module comprises:
a fourth calculation module for calculating the actual sewage discharge load N of the parcelArea of filmUnit ton/day, the calculation formula is:
Narea of film＝P×q+WDischarge of industrial wastewater in district×CDistrict industrial wastewater
A fifth calculation module for calculating the actual sewage inflow load N of the districtTablet regionIn unit of ten thousand tons/month, the calculation formula is as follows:
Ntablet region＝WSewage collection amount in area×CSewage inflow of parcel/100-NB
A sixth calculation module for calculating the efficiency η of the sewage pipe network based on the pollution load according to the following formulaPollution (b) byThe load is applied to the workpiece to be processed,
ηpollution load of parcel＝NTablet region/NArea of film×100％
P is the water consumption population of the district, and the unit is ten thousand; q is the total amount of pollutants generated by each person in the tablet area every day, and the unit is gram/person-day; wDischarge of industrial wastewater in districtThe unit is t/d of the discharge amount of industrial wastewater in a plot; cDistrict industrial wastewaterThe concentration of the pollution material in unit mg/L is the sewage discharge concentration of the industrial wastewater in the parcel; wSewage collection amount in areaThe unit is ten thousand tons/month for serving the flow of a sewage pump station of the district or the flow of a sewage main pipe node; cSewage inflow of parcelFor sewage pump station flow or sewage main pipe node sewage of serving the districtWater concentration, in mg/L.
10. The wastewater treatment system classification system of claim 6, wherein the third determination module comprises:
the first classification module is used for respectively classifying the district sewage pipe network efficiency based on the sewage amount higher than 100% and the district sewage pipe network efficiency based on the pollution load into a high water amount and a high load according to the values of the district sewage pipe network efficiency based on the sewage amount and the district sewage pipe network efficiency based on the pollution load, and the district sewage pipe network efficiency based on the sewage amount not higher than 100% and the district sewage pipe network efficiency based on the pollution load are respectively classified into a low water amount and a low load;
and the second classification module is used for classifying the subareas into the following classes according to the actual subarea sewage pipe network efficiency values of the subareas: high water content high load section, high water content low load section, low water content high load section, low water content low load section.
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