A sewage concentration analysis system for a sewage outlet into a river

Abstract

The invention relates to the field of sewage treatment, and discloses a sewage concentration analysis system for a sewage outlet into a river, comprising: a sewage outlet water quality collection module, at least one monitoring point is set at each sewage outlet, and water quality parameters of the sewage outlet are obtained in real time; a river water quality collection module, which collects water quality parameters of the river based on evenly distributed river monitoring stations; a pre-processing module, which processes the water quality parameters of the sewage outlet and the water quality parameters of the river respectively to obtain a sewage outlet water quality coefficient and a river water quality coefficient; an analysis and monitoring module, which obtains a water quality coefficient and an overall change trend coefficient of each sewage outlet by analyzing the change amplitude of the sewage outlet water quality coefficient within a time period and the change amplitude of the river water quality coefficient within the same time period, and judges the change trend of sewage concentration according to the overall change trend coefficient; and a control module, which regulates the number of monitoring points of each sewage outlet according to the water quality coefficient of each sewage outlet.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to a sewage concentration analysis system for a sewage outlet into a river. Background Art

[0002] Analysis of sewage concentration at river discharge outlets is not only a necessary means to ensure water environment safety and ecological balance, but also an important measure to achieve sustainable development. On the one hand, by analyzing the sewage concentration at river discharge outlets, we can timely understand the content of harmful substances in sewage, so as to judge whether it will cause pollution to the water body; on the other hand, harmful substances in sewage may cause damage to the ecosystem and affect the survival and reproduction of aquatic organisms. By analyzing the sewage concentration, we can timely discover and take measures to reduce the discharge of pollutants, thereby protecting the balance of the ecosystem, which is of great significance for preventing water pollution and protecting the safety of the water environment. Sewage monitoring items include flow, water temperature, pH value, CODCr, BOD5, ammonium nitrogen, volatile phenols, etc. These indicators directly reflect the degree of pollution and ecological environment of the water body.

[0003] However, the existing sewage concentration monitoring at sewage outlets only considers the water quality changes of a single sewage outlet, which leads to the embarrassing situation that sewage outlets with less pollution are heavily monitored, while sewage outlets with more pollution are lightly monitored, resulting in errors in the overall sewage concentration analysis of sewage outlets. Summary of the invention

[0004] The purpose of the present invention is to provide a sewage concentration analysis system for sewage outlets into rivers, so as to solve the technical problem that the existing sewage concentration monitoring of sewage outlets only considers the water quality changes of a single sewage outlet, resulting in the embarrassing situation that sewage outlets with less pollution are heavily monitored, while sewage outlets with more pollution are lightly monitored, resulting in errors in the overall sewage concentration analysis of the sewage outlets.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A sewage concentration analysis system for a sewage outlet into a river, comprising:

[0007] The sewage outlet water quality collection module sets at least one monitoring point at each sewage outlet to obtain the water quality parameters of the sewage outlet in real time;

[0008] The river water quality collection module collects river water quality parameters based on evenly distributed river monitoring stations;

[0009] The pre-processing module calculates the water quality coefficient of each sewage outlet by weighted summation of the water quality parameters of the sewage outlet, and then assigns weights to each sewage outlet, and calculates the total sewage outlet water quality coefficient by weighted summation again;

[0010] The water quality parameters of the river are calculated for each water quality monitoring station by weighted summation and then averaged to obtain the river water quality coefficient;

[0011] The analysis and monitoring module obtains the water quality coefficient of each sewage outlet and the overall change trend coefficient by analyzing the change range of the water quality coefficient of the sewage outlet within a period of time and the change range of the water quality coefficient of the river within the same period of time, and determines the change trend of the sewage concentration according to the overall change trend coefficient;

[0012] A control module, which adjusts the number of monitoring points at each sewage outlet according to the water quality coefficient of each sewage outlet;

[0013] The water quality parameters include but are not limited to temperature, pH value, dissolved oxygen, turbidity, COD, ammonia nitrogen, and sewage flow.

[0014] As a further technical solution, the working process of the preprocessing module is:

[0015] Through formula 1:

[0016]

[0017] Calculate the first Water quality coefficient of sewage outlet ;in, For the Water quality parameters Test values, For the The total number of test values ​​of water quality parameters, is the total number of water quality parameters, For the The weight coefficients corresponding to the water quality parameters;

[0018] Will Substitute into formula 2:

[0019]

[0020] Calculate the total sewage outlet water quality coefficient ;in, For the The weighting factor of the water quality coefficient of each sewage outlet is is the total number of sewage outlets;

[0021] Through formula three:

[0022]

[0023] Calculate the river water quality coefficient ;in, For the The proportional coefficient corresponding to each river monitoring station is is the total number of river monitoring stations, For the The value of the jth river water quality parameter at a river monitoring station, is the influencing factor corresponding to the j-th river water quality parameter value, It is the total number of river water quality parameters at the river monitoring station.

[0024] As a further technical solution, the process of obtaining the water quality coefficient and overall change trend coefficient of each sewage outlet is as follows:

[0025] Through formula 4:

[0026]

[0027] Calculate the first The trend coefficient of the sewage outlet ;

[0028] Through formula 5:

[0029]

[0030] Calculate the overall change trend coefficient ;

[0031] in, For the The curve of the water quality coefficient of each sewage outlet changing with time, is the curve of river water quality coefficient changing with time, is the curve of the total sewage outlet water quality coefficient changing with time, is the preset coefficient, the default , The detection period.

[0032] As a further technical solution, the preset coefficient The acquisition process is:

[0033] The trend coefficient calculated for each sewage outlet Determine whether the water quality change at the current sewage outlet is large or small;

[0034] If the water quality of the current sewage outlet changes greatly, the current sewage outlet will be marked;

[0035] Obtaining a ratio of the number of marked sewage outlets to the total number of sewage outlets, and comparing the ratio with a preset ratio threshold;

[0036] If the ratio exceeds the preset ratio threshold, the preset coefficient Expand by 2 times, otherwise, keep the current preset coefficient unchanged.

[0037] As a further technical solution, the process of judging whether the water quality change at the current sewage outlet is large or small is as follows:

[0038] The first The trend coefficient of the sewage outlet Preset change trend threshold Compare,

[0039] like , it is judged that the water quality coefficient of the current sewage outlet has a large change range, otherwise, it is judged that the water quality coefficient of the current sewage outlet has a small change range.

[0040] As a further technical solution, the working process of the control module is:

[0041] Analyze whether to issue a pollution warning based on the judgment results of the analysis and monitoring module;

[0042] If a pollution warning is issued, the number of times each sewage outlet is marked during multiple detection periods is continuously obtained ;

[0043] By formula Calculate the fluctuation coefficient of each sewage outlet ;

[0044] According to the volatility coefficient Sort in descending order;

[0045] After retaining one of the sewage outlet monitoring points corresponding to the fluctuation coefficients in the last M positions, the remaining monitoring points are added in sequence to the sewage outlets corresponding to the fluctuation coefficients in the first M positions of the sort.

[0046] As a further technical solution, the change trend process of sewage concentration is determined according to the overall change trend coefficient:

[0047] The overall change trend coefficient will be calculated Compare with preset interval Compare;

[0048] like , it is judged that the sewage concentration in the current river is on the rise, and a pollution warning is issued;

[0049] like lie in If the concentration of sewage in the river is within the range of 10000, it is judged that the current sewage concentration in the river is stable;

[0050] like , it can be judged that the sewage concentration in the current river is on a downward trend.

[0051] As a further technical solution, the system further includes:

[0052] The communication module is used to realize the communication connection between the sewage outlet water quality collection module, the river water quality collection module, the pretreatment module, the analysis and monitoring module and the control module.

[0053] Beneficial effects of the present invention:

[0054] The present invention sets at least one monitoring point at each sewage outlet to obtain the water quality parameters of the sewage outlet in real time, and at the same time collects the water quality parameters of the river based on evenly distributed river monitoring stations, and then processes the water quality parameters of the sewage outlet and the water quality parameters of the river respectively to obtain the water quality coefficient of the sewage outlet and the water quality coefficient of the river, and obtains the water quality coefficient of each sewage outlet and the overall change trend coefficient by analyzing the change amplitude of the water quality coefficient of the sewage outlet in a time period and the change amplitude of the water quality coefficient of the river in the same time period, and judges the change trend of sewage concentration according to the overall change trend coefficient, and at the same time, adjusts the number of monitoring points of each sewage outlet according to the water quality coefficient of each sewage outlet; through the above technical scheme, it is possible to combine the water quality of the entire river and the water quality of each sewage outlet for comprehensive analysis, judge the trend of water quality change, and adjust the number of monitoring points according to the change amplitude of the water quality of each sewage outlet, so as to achieve the purpose of focusing on monitoring the sewage outlet with large water quality changes and lightly monitoring the sewage outlet with small water quality changes, so as to maximize the utilization of monitoring point resources and improve the efficiency of sewage monitoring at the drainage outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The present invention will be further described below in conjunction with the accompanying drawings.

[0056] Figure 1 It is a system structure diagram of the present invention. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] See also Figure 1 As shown, the present invention is a sewage concentration analysis system for a sewage outlet into a river, comprising:

[0059] The sewage outlet water quality collection module sets at least one monitoring point at each sewage outlet to obtain the water quality parameters of the sewage outlet in real time;

[0060] The river water quality collection module collects river water quality parameters based on evenly distributed river monitoring stations;

[0061] The pre-processing module calculates the water quality coefficient of each sewage outlet by weighted summation of the water quality parameters of the sewage outlet, and then assigns weights to each sewage outlet, and calculates the total sewage outlet water quality coefficient by weighted summation again;

[0062] The water quality parameters of the river are calculated for each water quality monitoring station by weighted summation and then averaged to obtain the river water quality coefficient;

[0063] The analysis and monitoring module obtains the water quality coefficient of each sewage outlet and the overall change trend coefficient by analyzing the change range of the water quality coefficient of the sewage outlet within a period of time and the change range of the water quality coefficient of the river within the same period of time, and determines the change trend of the sewage concentration according to the overall change trend coefficient;

[0064] A control module, which adjusts the number of monitoring points at each sewage outlet according to the water quality coefficient of each sewage outlet;

[0065] Wherein, the water quality parameters include but are not limited to temperature, pH value, dissolved oxygen, turbidity, COD, ammonia nitrogen, and sewage flow;

[0066] The communication module is used to realize the communication connection between the sewage outlet water quality collection module, the river water quality collection module, the pretreatment module, the analysis and monitoring module and the control module.

[0067] In this embodiment, at least one monitoring point is first set at each sewage outlet to obtain the water quality parameters of the sewage outlet in real time. At the same time, the water quality parameters of the river are collected based on the evenly distributed river monitoring stations. Then, the water quality parameters of the sewage outlet and the water quality parameters of the river are processed respectively to obtain the sewage outlet water quality coefficient and the river water quality coefficient. By analyzing the change range of the sewage outlet water quality coefficient in a time period and the change range of the river water quality coefficient in the same time period, the water quality coefficient of each sewage outlet and the overall change trend coefficient are obtained. The change trend of sewage concentration is judged according to the overall change trend coefficient. At the same time, the number of monitoring points of each sewage outlet is adjusted according to the water quality coefficient of each sewage outlet. Through the above technical solution, it is possible to combine the water quality of the entire river and the water quality of each sewage outlet for comprehensive analysis, judge the trend of water quality change, and adjust the number of monitoring points according to the change range of water quality of each sewage outlet, so as to achieve the purpose of focusing on monitoring sewage outlets with large water quality changes and lightly monitoring sewage outlets with small water quality changes, so as to maximize the utilization of monitoring point resources and improve the efficiency of sewage monitoring at the drainage outlet.

[0068] The working process of the preprocessing module is:

[0069] Through formula 1:

[0070]

[0071] Calculate the first Water quality coefficient of sewage outlet ;in, For the Water quality parameters Test values, For the The total number of test values ​​of water quality parameters, is the total number of water quality parameters, For the The weight coefficients corresponding to the water quality parameters;

[0072] Will Substitute into formula 2:

[0073]

[0074] Calculate the total sewage outlet water quality coefficient ;in, For the The weighting factor of the water quality coefficient of each sewage outlet is is the total number of sewage outlets;

[0075] Through formula three:

[0076]

[0077] Calculate the river water quality coefficient ;in, For the The proportional coefficient corresponding to each river monitoring station is selected and determined based on historical experimental data. is the total number of river monitoring stations, For the The value of the jth river water quality parameter at a river monitoring station, is the influencing factor corresponding to the jth river water quality parameter value, which is comprehensively formulated based on historical data and empirical data. It is the total number of river water quality parameters at the river monitoring station.

[0078] In this embodiment, a method for obtaining the water quality coefficient of the sewage outlet, the total water quality coefficient of the sewage outlet and the water quality coefficient of the river is provided. Specifically, various water quality parameters are obtained by various water quality detection sensors, and then multiple analysis is performed at multiple monitoring points to improve the accuracy of water quality detection at each sewage outlet. Then, the formula Calculate the first Water quality coefficient of sewage outlet ,when The larger the value, the higher the water quality coefficient of the sewage outlet. The larger the value, the higher the sewage concentration at the outfall and the worse the water quality. Substitution The total sewage outlet water quality coefficient is calculated Obviously, if each sewage outlet The larger the total sewage outlet water quality coefficient is, the The larger the value, the worse the water quality at the sewage outlet and the higher the sewage concentration. Calculate the river water quality coefficient Obviously, the worse the water quality of the river, the higher the water quality coefficient The larger the water quality coefficient is, the higher the accuracy of the water quality detection at the sewage outlet can be determined by mutual verification between the river water quality coefficient and the total sewage outlet water quality coefficient. Obviously, if the river water quality coefficient shows a downward trend, while the total sewage outlet water quality coefficient shows an upward trend, it is obviously unreasonable and there is a monitoring failure.

[0079] The process of obtaining the water quality coefficient and overall change trend coefficient of each sewage outlet is as follows:

[0080] Through formula 4:

[0081]

[0082] Calculate the first The trend coefficient of the sewage outlet ;

[0083] Through formula 5:

[0084]

[0085] Calculate the overall change trend coefficient ;

[0086] in, For the The curve of the water quality coefficient of each sewage outlet changing with time, is the curve of river water quality coefficient changing with time, is the curve of the total sewage outlet water quality coefficient changing with time, is the preset coefficient, the default , The detection period.

[0087] In this embodiment, a method for obtaining the water quality coefficient and the overall change trend coefficient of each sewage outlet is provided. Specifically, first obtain the water quality coefficient of each sewage outlet. Curve of water quality coefficient of sewage outlet changing with time And the curve of river water quality coefficient changing with time , and then through the formula Calculate the first The trend coefficient of the sewage outlet ; Obviously, the greater the ratio of the change in water quality of each sewage outlet to the change in water quality of the entire river, the greater the impact of the current sewage outlet on the river water quality, so the change trend coefficient The larger the value, the more likely it is to be monitored. This provides a basis for selecting which sewage outlets to focus on, thereby maximizing cost savings while taking into account the quality of water quality monitoring. At the same time, through Formula 5: Calculate the overall change trend coefficient Obviously, if The larger the value is, the greater the overall change trend coefficient is. The greater the impact, The larger the value is, the greater the change in the total sewage outlet water quality coefficient is, the closer or greater the change in the river water quality coefficient is. The changing trend of river water quality can be determined.

[0088] The preset coefficient The acquisition process is:

[0089] The trend coefficient calculated for each sewage outlet Determine whether the water quality change at the current sewage outlet is large or small;

[0090] If the water quality of the current sewage outlet changes greatly, the current sewage outlet will be marked;

[0091] Obtaining a ratio of the number of marked sewage outlets to the total number of sewage outlets, and comparing the ratio with a preset ratio threshold;

[0092] If the ratio exceeds the preset ratio threshold, the preset coefficient Expand by 2 times, otherwise, keep the current preset coefficient unchanged.

[0093] In this embodiment, a method for obtaining a preset coefficient is provided. Specifically, the change trend coefficient is calculated based on each sewage outlet. Determine whether the water quality change of the current sewage outlet is large or small. If the water quality change of the current sewage outlet is large, mark the current sewage outlet, and then obtain the ratio of the number of marked sewage outlets to the total number of sewage outlets. Compare the ratio with the preset ratio threshold. Obviously, if the ratio exceeds the preset ratio threshold, it means that the proportion of sewage outlets with large water quality changes is getting higher and higher, so the impact on the water quality of the entire river is getting greater and greater, and the water quality of the river is declining. Therefore, the preset coefficient Expand by 2 times and increase the coefficient of overall change trend In order to expand the overall trend coefficient , otherwise, keep the current preset coefficient unchanged.

[0094] The process of judging whether the water quality change at the current sewage outlet is large or small is as follows:

[0095] The first The trend coefficient of the sewage outlet Preset change trend threshold Compare,

[0096] like , it is judged that the water quality coefficient of the current sewage outlet has a large change range, otherwise, it is judged that the water quality coefficient of the current sewage outlet has a small change range.

[0097] According to the overall change trend coefficient, the change trend process of sewage concentration is as follows:

[0098] The overall change trend coefficient will be calculated Compare with preset interval Compare;

[0099] like , it is judged that the sewage concentration in the current river is on the rise, and a pollution warning is issued;

[0100] like lie in If the concentration of sewage in the river is within the range of 10000, it is judged that the current sewage concentration in the river is stable;

[0101] like , it can be judged that the sewage concentration in the current river is on a downward trend.

[0102] In this embodiment, the overall change trend coefficient is obtained by calculating Compare with preset interval By comparison, it is obvious that , it is judged that the sewage concentration in the current river is on the rise, and a pollution warning is issued. Therefore, it is necessary to conduct more in-depth treatment of the sewage discharged from the sewage outlet to reduce the pollution to the river. Obviously, if lie in If the sewage concentration in the river is within the range of , it can be judged that the sewage concentration in the current river is on a downward trend.

[0103] The working process of the control module is as follows:

[0104] Analyze whether to issue a pollution warning based on the judgment results of the analysis and monitoring module;

[0105] If a pollution warning is issued, the number of times each sewage outlet is marked during multiple detection periods is continuously obtained ;

[0106] By formula Calculate the fluctuation coefficient of each sewage outlet ;

[0107] According to the volatility coefficient Sort in descending order;

[0108] After retaining one of the sewage outlet monitoring points corresponding to the fluctuation coefficients in the last M positions, the remaining monitoring points are added in sequence to the sewage outlets corresponding to the fluctuation coefficients in the first M positions of the sort.

[0109] In this embodiment, the number of times each sewage outlet is marked in multiple detection periods is first obtained continuously. , and then through the formula Calculate the fluctuation coefficient of each sewage outlet , according to the volatility coefficient Arrange in descending order, retain one sewage outlet monitoring point corresponding to the fluctuation coefficient in the last M positions, and then add the remaining monitoring points to the sewage outlets corresponding to the fluctuation coefficients in the first M positions in sequence; through the above technical solution, the number of monitoring points of each sewage outlet can be adjusted in real time, so as to focus on monitoring the changes in water quality in the sewage outlet.

[0110] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A sewage concentration analysis system for a sewage outlet into a river, characterized in that: include: The sewage outlet water quality collection module sets at least one monitoring point at each sewage outlet to obtain the water quality parameters of the sewage outlet in real time; The river water quality collection module collects river water quality parameters based on evenly distributed river monitoring stations; The pre-processing module calculates the water quality coefficient of each sewage outlet by weighted summation of the water quality parameters of the sewage outlet, and then assigns weights to each sewage outlet, and calculates the total sewage outlet water quality coefficient by weighted summation again; The water quality parameters of the river are calculated for each water quality monitoring station by weighted summation and then averaged to obtain the river water quality coefficient; The analysis and monitoring module obtains the water quality coefficient of each sewage outlet and the overall change trend coefficient by analyzing the change range of the water quality coefficient of the sewage outlet within a period of time and the change range of the water quality coefficient of the river within the same period of time, and determines the change trend of the sewage concentration according to the overall change trend coefficient; A control module, which adjusts the number of monitoring points at each sewage outlet according to the water quality coefficient of each sewage outlet; Wherein, the water quality parameters include temperature, pH value, dissolved oxygen, turbidity, COD, ammonia nitrogen, and sewage flow; The process of obtaining the water quality coefficient and overall change trend coefficient of each sewage outlet is as follows: Through formula 4: Calculate the first The trend coefficient of the sewage outlet ; Through formula 5: Calculate the overall change trend coefficient ; in, For the The curve of the water quality coefficient of each sewage outlet changing with time, is the curve of river water quality coefficient changing with time, is the curve of the total sewage outlet water quality coefficient changing with time, is the preset coefficient, the default , The detection period; The preset coefficient The acquisition process is: The trend coefficient calculated for each sewage outlet Determine whether the water quality change at the current sewage outlet is large or small; If the water quality of the current sewage outlet changes greatly, the current sewage outlet will be marked; Obtaining a ratio of the number of marked sewage outlets to the total number of sewage outlets, and comparing the ratio with a preset ratio threshold; If the ratio exceeds the preset ratio threshold, the preset coefficient Expand by 2 times, otherwise, maintain the current preset coefficient unchanged; The working process of the control module is as follows: Analyze whether to issue a pollution warning based on the judgment results of the analysis and monitoring module; If a pollution warning is issued, the number of times each sewage outlet is marked during multiple detection periods is continuously obtained ; By formula Calculate the fluctuation coefficient of each sewage outlet ; To preset the change trend threshold; According to the volatility coefficient Sort in descending order; After retaining one of the sewage outlet monitoring points corresponding to the fluctuation coefficients in the last M positions, the remaining monitoring points are added in sequence to the sewage outlets corresponding to the fluctuation coefficients in the first M positions of the sort.

2. The sewage concentration analysis system for a sewage outlet into a river according to claim 1 is characterized in that: The working process of the preprocessing module is: Through formula 1: Calculate the first Water quality coefficient of sewage outlet ;in, For the Water quality parameters Test values, For the The total number of test values ​​of water quality parameters, is the total number of water quality parameters, For the The weight coefficients corresponding to the water quality parameters; Will Substitute into formula 2: Calculate the total sewage outlet water quality coefficient ;in, For the The weighting factor of the water quality coefficient of each outfall, is the total number of sewage outlets; Through formula three: Calculate the river water quality coefficient ;in, For the The proportional coefficient corresponding to each river monitoring station is is the total number of river monitoring stations, For the The value of the jth river water quality parameter at a river monitoring station, is the influencing factor corresponding to the j-th river water quality parameter value, It is the total number of river water quality parameters at the river monitoring station.

3. The sewage concentration analysis system for a sewage outlet into a river according to claim 1 is characterized in that: The process of judging whether the water quality change at the current sewage outlet is large or small is as follows: The first The trend coefficient of the sewage outlet Preset change trend threshold Compare, like , it is judged that the water quality coefficient of the current sewage outlet has a large change range, otherwise, it is judged that the water quality coefficient of the current sewage outlet has a small change range.

4. The sewage concentration analysis system for a sewage outlet into a river according to claim 1, characterized in that: According to the overall change trend coefficient, the change trend process of sewage concentration is as follows: The overall change trend coefficient will be calculated Compare with preset interval Compare; like , it is judged that the sewage concentration in the current river is on the rise, and a pollution warning is issued; like lie in If the concentration of sewage in the river is within the range of 10000, it is judged that the current sewage concentration in the river is stable; like , it can be judged that the sewage concentration in the current river is on a downward trend.

5. The sewage concentration analysis system for a sewage outlet into a river according to claim 1, characterized in that: The system further comprises: The communication module is used to realize the communication connection between the sewage outlet water quality collection module, the river water quality collection module, the pretreatment module, the analysis and monitoring module and the control module.

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