CN111943292A - Storage tank coupling high-load sewage treatment method, device and system - Google Patents
Storage tank coupling high-load sewage treatment method, device and system Download PDFInfo
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Abstract
The invention relates to a method, a device and a system for treating high-load sewage by coupling a storage tank. The method comprises the following steps: carrying out mode judgment on the sewage treatment plant according to the pre-acquired water quantity information of the sewage treatment plant; under the condition of an intermittent high-load mode, calculating the volume of the storage tank and the predicted sewage amount according to the monitoring data; judging the working condition according to the volume of the storage tank, the predicted sewage amount and the designed water amount of the sewage treatment plant; the working conditions comprise a storage tank water storage working condition and a high-load treatment working condition of a sewage treatment plant. According to the method, the high-load treatment system of the sewage treatment plant is coupled with the regulation and storage tank, the water fluctuation is effectively reduced in sunny days, the stable operation of the sewage treatment plant is guaranteed, the treatment potential of the terminal treatment facility of the drainage system is deeply excavated after rainfall, the interception and purification of the terminal control system of the drainage system on pollutants are realized to the maximum extent, the maximum benefit of a rainwater and sewage cooperative treatment measure is exerted, the discharge outlet overflow amount in dry seasons is strictly controlled, and the overflow pollution in rainy seasons is reduced.
Description
Technical Field
The invention relates to the technical field of water environment treatment, in particular to a method, a device and a system for treating high-load sewage by coupling a regulation and storage tank.
Background
At present, mixed flow type overflow pollution and combined flow type overflow pollution (hereinafter referred to as overflow pollution) caused by mixed connection and misconnection of urban rainwater and sewage pipelines become one of the main causes of black and odorous urban water and water environment pollution in China. In order to reduce overflow pollution, three technical measures of source, midway and tail end are generally adopted. The source measures belong to micro-scale sponge measures, low-impact development is taken as a core, conventional roofs, roads, greenbelts and the like are converted into green ecological facilities with rainwater infiltration, storage and purification capabilities, the runoff of regional rainwater can be effectively reduced, the overflow quantity of the tail end of a system is further reduced, the implementation of the source measures needs to be matched with multiple departments such as modification, planning, building, gardens, water utilities and the like, the required investment is high, the implementation period is long, the investment per hectare is reaches 50-120 ten thousand yuan, and the total urban investment scale is even up to the order of billions to billions. In the midway-pipe network transformation measures, detailed hidden danger troubleshooting and analysis work needs to be carried out on a pipe network system, mixed misconnection transformation and pipe network restoration are carried out on a large number of pipelines, the problems of long time consumption, large construction amount, difficulty in realizing thorough shunt system transformation and the like also exist, and the investment scale of the pipe network transformation is up to billions of orders of magnitude. In contrast, the investment for the transformation of the terminal treatment measures is only on the scale of hundreds of millions to billions, and the terminal treatment measures realize high-load treatment by exploring the treatment margin and potential of a sewage treatment plant, so that the terminal treatment measures are the technical measures with the highest investment benefit and the most obvious short-term effect.
At present, in sewage treatment plant end treatment field, compare with the sufficient condition of southern water yield, the pipe network water supply fluctuation in the north is great, and what southern sewage treatment plant corresponds the water yield and set for is the high load processing system of relatively stable, and what northern sewage treatment plant corresponds the water yield and set for is intermittent type high load processing system, and this kind of intermittent type high load is handled and is strikeed great to sewage treatment plant, is difficult to ensure sewage treatment plant steady operation and goes out the stable standard of water.
Disclosure of Invention
In view of this, the present invention provides a method, an apparatus and a system for high load sewage treatment by reservoir coupling.
In order to achieve the purpose, the invention adopts the following technical scheme:
a regulation and storage tank coupled high-load sewage treatment method comprises the following steps:
carrying out mode judgment on the sewage treatment plant according to pre-acquired historical sewage treatment plant water amount information or pipe network flow monitoring information; the sewage treatment plant mode comprises a continuous high-load mode and an intermittent high-load mode;
if the sewage treatment plant mode is the intermittent high-load mode, calculating the volume of the storage tank and the predicted sewage amount according to monitoring data;
judging the working condition according to the volume of the storage tank, the predicted sewage amount and the designed water amount of a sewage treatment plant; the working conditions comprise a storage tank water storage working condition and a high-load treatment working condition of a sewage treatment plant;
if the working condition is a high-load treatment working condition of the sewage treatment plant, controlling the sewage treatment plant to carry out high-load sewage treatment; and if the working condition is a storage water working condition of the storage tank, controlling the storage tank to store water.
Optionally, the water amount information of the sewage treatment plant includes: the single-day high-load treatment water volume of the sewage treatment plant, the design water volume of the sewage treatment plant and the monthly high-load treatment days of the sewage treatment plant; (ii) a The pipe network flow monitoring information comprises: historically monitoring the flow, liquid level and rainfall of a pipe network;
the mode judgment of the sewage treatment plant is carried out according to the pre-acquired historical sewage treatment plant water amount information or pipe network flow monitoring information, and comprises the following steps:
comparing the single-day high-load treated water volume of the sewage treatment plant with the designed water volume of the sewage treatment plant to obtain a water volume comparison result;
comparing the monthly high-load processing days with preset high-load processing days to obtain a day comparison result;
and determining the mode of the sewage treatment plant according to the water quantity comparison result and/or the day comparison result.
Optionally, the sewage treatment plant mode includes: the system does not have high load processing capacity, has continuous high load processing capacity and has intermittent high load processing capacity;
the preset high-load processing days comprise a first preset day and a second preset day; the first preset number of days is less than the second preset number of days;
the determining the sewage treatment plant mode according to the water amount comparison result and/or the day number comparison result includes:
if the water quantity comparison result shows that the single-day high-load treatment water quantity of the sewage treatment plant is less than or equal to the designed water quantity of the sewage treatment plant by the preset multiple, or the monthly high-load treatment days are less than the first preset days, determining that the mode of the sewage treatment plant does not have high-load treatment capacity;
if the water quantity comparison result shows that the single-day high-load treatment water quantity of the sewage treatment plant is greater than or equal to the design water quantity of the sewage treatment plant, and the monthly high-load treatment days are greater than the second preset days, determining that the sewage treatment plant mode is the mode with continuous high-load treatment capacity;
and if the water quantity comparison result shows that the single-day high-load treatment water quantity of the sewage treatment plant is greater than or equal to the design water quantity of the sewage treatment plant, and the monthly high-load treatment days are between the first preset days and the second preset days, determining that the sewage treatment plant mode is the intermittent high-load treatment capacity.
Optionally, the monitoring data includes: sewage treatment plant for pipeline network flow monitoring information and overflow monitoring data;
the calculation of the storage tank volume and the predicted sewage amount according to the monitoring data comprises the following steps:
obtaining the daily water quantity control volume of the sewage treatment plant and the hourly water quantity fluctuation regulation and storage volume of the sewage treatment plant according to the overflow monitoring data;
calculating to obtain the volume of the storage tank according to the daily water control volume of the sewage treatment plant and the hourly water fluctuation storage volume of the sewage treatment plant;
and the sewage treatment plant calculates according to the pipe network flow monitoring information to obtain the predicted sewage amount.
Optionally, the determining the working condition according to the storage tank volume, the predicted sewage amount and the design water amount of the sewage treatment plant includes:
calculating the continuous water storage time of the regulating and storing pool according to the predicted existing water storage amount of the regulating and storing pool, the capacity of the regulating and storing pool, the predicted sewage amount and the designed water amount of a sewage treatment plant;
and comparing the continuous water storage time of the storage tank with the preset minimum water storage time and the preset maximum water storage time to determine the working condition.
Optionally, the comparing the continuous water storage time of the storage tank with a preset minimum water storage time and a preset maximum water storage time to determine the working condition includes:
if the continuous water storage time of the regulating storage tank is less than the preset minimum water storage time, comparing the predicted actual continuous water storage time of the regulating storage tank with the preset minimum water storage time;
if the actual continuous water storage time of the storage tank is less than or equal to the preset minimum continuous water storage time, judging that the working condition is the water storage working condition of the storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant;
if the continuous water storage time of the regulating storage tank is between the preset minimum water storage time and the preset maximum water storage time, comparing the actual continuous water storage time of the regulating storage tank with the continuous water storage time of the regulating storage tank;
if the actual continuous water storage time of the storage tank is less than or equal to the continuous water storage time of the storage tank, judging that the working condition is the storage water working condition of the storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant;
if the continuous water storage time of the regulating and storing pool is longer than the preset maximum water storage time, comparing the actual continuous water storage time of the regulating and storing pool with the preset maximum water storage time;
if the actual continuous water storage time of the storage tank is less than or equal to the preset maximum continuous water storage time, judging that the working condition is the water storage working condition of the storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant.
Optionally, if the working condition is a high-load treatment working condition of a sewage treatment plant, the method further includes:
and calculating the time for the sewage treatment plant to be overloaded according to the predicted existing water quantity of the storage tank, the predicted sewage quantity, the designed water quantity of the sewage treatment plant and the preset maximum high-load treatment time of the sewage treatment plant.
Optionally, the method further includes:
comparing the running time of the sewage treatment plant to be overloaded with the actual high-load treatment time of the sewage treatment plant known in advance;
and if the running time of the sewage treatment plant to be overloaded is less than or equal to the actual high-load treatment time of the sewage treatment plant, controlling the sewage treatment plant to carry out high-load sewage treatment.
A regulation pond coupling high load sewage treatment plant includes:
the sewage treatment plant mode judgment module is used for judging the mode of the sewage treatment plant according to the pre-acquired water quantity information of the sewage treatment plant; the sewage treatment plant mode comprises a continuous high-load mode and an intermittent high-load mode;
the volume water amount calculation module is used for calculating the volume of the storage tank and predicting the sewage amount according to monitoring data if the mode of the sewage treatment plant is the intermittent high-load mode;
the working condition judgment module is used for judging the working condition according to the volume of the storage tank, the predicted sewage amount and the designed water amount of a sewage treatment plant; the working conditions comprise a storage tank water storage working condition and a high-load treatment working condition of a sewage treatment plant;
the water quantity control module is used for controlling the sewage treatment plant to carry out high-load sewage treatment if the working condition is a high-load treatment working condition of the sewage treatment plant; and if the working condition is a storage water working condition of the storage tank, controlling the storage tank to store water.
A regulation pond coupling high load sewage treatment system includes:
the system comprises a flow distribution unit, a storage regulation unit, a water distribution unit and a controller;
the flow distribution unit is communicated with the storage regulation unit, and both the flow distribution unit and the storage regulation unit are communicated with an external sewage treatment plant through the water distribution unit;
the controller is respectively connected with the flow distribution unit, the regulation and storage unit and the water distribution unit and is at least used for executing the regulation and storage tank coupling high-load sewage treatment method.
The technical scheme provided by the application can comprise the following beneficial effects:
the regulation and storage tank coupling high-load sewage treatment method disclosed by the application comprises the steps of judging the mode of a sewage treatment plant according to water quantity information of the sewage treatment plant, and calculating the volume of the regulation and storage tank and predicting the sewage quantity according to monitoring data when the mode of the sewage treatment plant is an intermittent high-load mode; and then, working condition judgment is carried out according to the volume of the storage tank, the predicted sewage amount and the designed water amount of the sewage treatment plant, and when the working condition is a high-load treatment working condition of the sewage treatment plant, the sewage treatment plant is controlled to carry out high-load treatment. The method firstly provides a mode judgment method for the sewage treatment plant, distinguishes high loads according to classes, provides a targeted terminal intermittent high-load treatment method, and couples a high-load treatment system of the sewage treatment plant with a regulation and storage tank, thereby providing a method for effectively reducing water quality and water volume fluctuation, relieving impact influence on the sewage treatment plant and improving the operation stability of the sewage treatment plant. Simultaneously, but the regulation pond volume is checked in this application still, avoids regulation pond and sewage treatment plant treatment facility throughput to mismatch, improves regulation system utilization ratio. The on-line monitoring, the water quality and quantity prediction and the dispatching control system are linked, and the efficient cooperation of the system is realized. Compared with the source sponge transformation and pipe network transformation measures, the terminal high-load treatment system has the technical characteristics of high investment benefit and obvious effect, can furthest realize the interception and purification of pollutants by the terminal control system of the drainage system, exerts the maximum benefit of the rain and sewage cooperative treatment measures, strictly controls the overflow quantity of the drainage outlet in dry seasons, and reduces the overflow pollution in rainy seasons. According to the drainage system, on the existing drainage system, a small amount of monitoring equipment, a storage tank, a valve and an intelligent control system are additionally arranged, so that the quality and the efficiency of the existing drainage system can be rapidly improved in a short time, and the drainage system has strong universality. Compared with a constant high-load treatment system with sufficient water quantity in the south, the intermittent high-load treatment system with large fluctuation of water quantity in the north or a pipe network has stronger sensitivity and poor impact resistance. The high-load treatment system is coupled with the storage and regulation system, so that a method for effectively reducing the fluctuation of water quality and water quantity, relieving the impact influence on a sewage treatment plant and improving the operation stability of the sewage treatment plant can be provided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for treating high-load sewage by coupling a storage tank according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for treating high-load sewage by coupling a storage tank according to another embodiment of the present invention;
FIG. 3 is a block diagram of a storage tank coupled with a high-load sewage treatment apparatus according to an embodiment of the present invention;
fig. 4 is a structural diagram of a high-load sewage treatment system coupled with a storage tank according to an embodiment of the present invention.
FIG. 5 is a schematic diagram of an overflow situation and a sewage treatment plant operation situation of an unloaded batch high load treatment system according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the effect of overflow control and device operation using an intermittent high-load processing system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
It should be noted that all the following embodiments in the present application are not only applicable to sewage treatment plants, but also applicable to sewage treatment plants, and similarly, also applicable to other sewage treatment apparatuses. The specific applicable object is not unique and is determined as the case may be. The following description will be made only by taking a sewage treatment plant as an example in the present application.
Fig. 1 is a flow chart of a method for treating high-load sewage by coupling a storage tank according to an embodiment of the present invention. Referring to fig. 1, a method for treating high-load sewage by coupling a storage tank comprises the following steps:
step 101: carrying out mode judgment on the sewage treatment plant according to pre-acquired historical sewage treatment plant water amount information or pipe network flow monitoring information; the sewage treatment plant mode includes a continuous high load mode and a batch high load mode. And the historical water inflow amount of the sewage treatment plant is subjected to statistical analysis by combining the pipe network condition, and then mode judgment is carried out.
Step 102: and if the mode of the sewage treatment plant is an intermittent high-load mode, calculating the volume of the storage tank and the predicted sewage amount according to the monitoring data.
Step 103: judging the working condition according to the volume of the storage tank, the predicted sewage amount and the designed water amount of the sewage treatment plant; the working conditions comprise a storage tank water storage working condition and a high-load treatment working condition of a sewage treatment plant;
step 104: if the working condition is a high-load treatment working condition of the sewage treatment plant, controlling the sewage treatment plant to carry out high-load sewage treatment; and if the working condition is a storage water working condition of the storage tank, controlling the storage tank to store water. When the working condition is the storage tank water storage working condition, the storage tank is controlled to store water, and the sewage treatment plant performs normal treatment work.
The method is adopted to judge the mode of the sewage treatment plant, a targeted terminal intermittent high-load treatment method is provided, and a high-load treatment system is coupled with a storage regulation system, so that a method for effectively reducing the fluctuation of water quality and water quantity, relieving the impact influence on the sewage treatment plant and improving the operation stability of the sewage treatment plant can be provided.
In order to describe the intermittent high-load processing method in the present application in more detail, a more detailed embodiment is also provided in the present application, which is as follows:
fig. 2 is a flow chart of a regulation and storage tank coupled high-load sewage treatment method according to another embodiment of the present invention, and referring to fig. 2, a regulation and storage tank coupled high-load sewage treatment method includes:
step 201: the single-day high-load treatment water quantity Q of the sewage treatment plantHeight ofAnd the design water quantity Q of the sewage treatment plantIs provided withComparing the water quantity to obtain a water quantity comparison result; the single-day high-load treated water quantity Q of the sewage treatment plantHeight ofAnd the design water quantity Q of the sewage treatment plantIs provided withAll were obtained by preliminary investigation. Wherein the water volume information of the sewage treatment plant comprises: the single-day high-load treatment water volume of the sewage treatment plant, the design water volume of the sewage treatment plant and the monthly high-load treatment days of the sewage treatment plant.
Step 202: comparing the monthly high-load processing days n with preset high-load processing days to obtain a day comparison result. The monthly high-load treatment days are obtained according to the statistics of the historical treatment condition of the sewage treatment plant, the preset high-load treatment days are preset by technicians according to professional experience, and the specific days are not fixed and can be determined according to the actual condition. The preset high-load processing days comprise a first preset day and a second preset day; the first preset number of days is less than the second preset number of days.
Step 203: and determining the mode of the sewage treatment plant according to the water quantity comparison result and/or the day comparison result. Specifically, the method comprises the following steps: if the water quantity comparison result shows that the water quantity of the sewage treatment plant for single-day high-load treatment is less than or equal to the preset timeDetermining that the mode of the sewage treatment plant is not provided with high load treatment capacity when the design water amount of a plurality of sewage treatment plants or the monthly high load treatment days are less than a first preset number of days; is like QHeight of≤a1QIs provided withOr n is<n1And determining that the sewage treatment plant does not have high load treatment capacity.
If the water quantity comparison result shows that the single-day high-load treatment water quantity of the sewage treatment plant is greater than or equal to the design water quantity of the sewage treatment plant by the preset multiple, and the monthly high-load treatment days are greater than the second preset days, determining that the mode of the sewage treatment plant has continuous high-load treatment capacity; is like QHeight of≥a1QIs provided withAnd n is>n2And determining that the sewage treatment plant has continuous high-load treatment capacity.
And if the water quantity comparison result shows that the single-day high-load treatment water quantity of the sewage treatment plant is greater than or equal to the design water quantity of the sewage treatment plant by the preset multiple, and the monthly high-load treatment days are between the first preset days and the second preset days, determining that the mode of the sewage treatment plant is the intermittent high-load treatment capacity. Is like QHeight of≥a1QIs provided withAnd n is1≤n≤n2And determining that the sewage treatment plant has intermittent high-load treatment capacity. Wherein a is1The value range is 3% -10%, n1The value range is 3-7 days, n2The value range is 14-21 days.
Step 204: and obtaining the daily water quantity control volume of the sewage treatment plant and the hourly water quantity fluctuation regulation and storage volume of the sewage treatment plant according to the overflow monitoring data.
Step 205: and calculating to obtain the volume of the storage tank according to the daily water control volume of the sewage treatment plant and the hourly water fluctuation storage volume of the sewage treatment plant. Specifically, the method comprises the following steps: according to the formula V ═ V1+V2Calculating the volume of the reservoir, wherein V1The volume is controlled for large peak clipping overflow, and is determined according to the control rate of the overflow quantity of the discharge port; v2The fluctuation storage capacity of the small peak clipping sewage treatment plant is determined according to the fluctuation storage water amount required by the maximum day in dry days. The volume V of the storage tank is checked by the high load processing capacity of a sewage treatment plant, namely the rainwater and the sewage stored in the storage period can be highly loadedAnd (5) treating by a sewage treatment plant.
Step 206: and calculating according to the pipe network flow monitoring information and the sewage treatment plant to obtain the predicted sewage amount. In detail, machine learning algorithms such as a neural network and the like are combined to calculate the water volume of the water from the sewage treatment plant for 7-14 days, so as to obtain the predicted sewage volume. Wherein pipe network flow monitoring information includes: historically, the flow, the liquid level and the rainfall of a pipe network are monitored. Wherein the liquid level can be flow monitoring data of a sewage treatment plant.
Step 207: and calculating the continuous water storage time of the regulating reservoir according to the predicted existing water storage amount of the regulating reservoir, the capacity of the regulating reservoir, the predicted sewage amount and the designed water amount of the sewage treatment plant. Specifically, the method comprises the following steps: according to the formula
Calculating the continuous water storage time K of the regulation and storage tank, wherein VWater storageThe existing water storage amount of the storage tank can be monitored in real time according to the situation;
in order to predict the amount of sewage,
designing water quantity for a sewage treatment plant, and i is the actual continuous water storage days of the regulating and storage tank. By this equation it can be determined how long the current storage tank can continuously hold water.
Step 208: and comparing the continuous water storage time of the regulating and storing pool with the preset minimum water storage time and the preset maximum water storage time to determine the working condition.
The specific public determination process is as follows: if the continuous water storage time K of the storage tank is less than the preset minimum continuous water storage time d1The predicted actual continuous water storage time i of the regulating storage tank and the preset minimum continuous water storage time d1Comparing;
if the actual continuous water storage time i of the storage tank is less than or equal to the preset minimum continuous water storage time d1Judging the working condition to be a storage water working condition of the storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant; when K is<d1While comparing i with d1If i is<d1Then, the storage water in the storage tank is judged in this case, if i is larger than or equal to d1It is judged that the sewage treatment plant is operated at a high load in this case.
If the continuous water storage time K of the storage tank is between the preset minimum continuous water storage time d1And presetting the maximum water storage time d2Comparing the actual continuous water storage time i of the regulating and storing pool with the continuous water storage time K of the regulating and storing pool;
if the actual continuous water storage time i of the regulating storage tank is less than or equal to the continuous water storage time K of the regulating storage tank, judging that the working condition is a water storage working condition of the regulating storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant; when d is1≤K≤d2When the water level of the storage tank is higher than the set water level, the water level of the storage tank is judged to be lower than the set water level, and if the water level of the storage tank is lower than the set water level, the water level of the storage tank is judged to be lower than the set water level>And K, judging that the sewage treatment plant operates at high load under the condition.
If the continuous water storage time K of the regulating and storing pool is greater than the preset maximum continuous water storage time d2The actual continuous water storage time i of the regulating storage tank and the preset maximum continuous water storage time d2Comparing;
if the actual continuous water storage time i of the storage tank is less than or equal to the preset maximum continuous water storage time d2Judging the working condition to be a storage water working condition of the storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant. When K is>d2While comparing i with d2If i is less than or equal to d2Then, the storage water in the storage tank is judged in this case, and if i>d2It is judged that the sewage treatment plant is operated at a high load in this case. d1The value range is 3-7 days; d2The value range is 7-14 days.
Step 209: and calculating the time of the sewage treatment plant to be overloaded according to the predicted existing water amount of the storage tank, the predicted sewage amount, the designed water amount of the sewage treatment plant and the preset maximum high-load treatment time of the sewage treatment plant. In particular, according to the formula
And T is more than or equal to c1Calculating the time T of the sewage treatment plant to be overloaded, wherein QmaxWhen the continuous high-load longest treatment of sewage treatment plant is carried outM, c1The minimum continuous high-load treatment time of the sewage treatment plant is in the range of 3-7 days, and j is the actual overload treatment days of the sewage treatment plant. d1、d2、c1The specific value is determined by combining the historical water inflow amount of the sewage treatment plant, the storage regulation volume and the high-load treatment process of the sewage treatment plant.
The purpose of calculating the time T of the sewage treatment plant to be overloaded is to reasonably adjust the time T of the sewage treatment plant to be overloaded according to the maximum continuous high-load processing time of the sewage treatment plant and the minimum continuous high-load processing time of the sewage treatment plant. The high-load operation of the sewage treatment plant is reasonably arranged, and the problem that the operation state of the sewage treatment plant is unreasonable is avoided. For example: the water quantity needing to be treated at present can be operated by the sewage treatment plant by more than 30% of load every day through the technology, but when the water quantity is not calculated by the application, the sewage treatment plant can also be operated by more than 50% of load every day, but the load of the sewage treatment plant is too large when the water quantity is operated by more than 50% of load, and the equipment of the sewage treatment plant is easily damaged. Therefore, the operation of the sewage treatment plant with more than 30% of load every day is determined after calculation by the application, the treatment time in the state meets the maximum high-load treatment time of the sewage treatment plant, and meanwhile, the sewage treatment plant does not need to operate in an ultrahigh-load state every day, so that the operation efficiency of the sewage treatment plant is greatly improved.
Meanwhile, on the basis, after the overload running time T of the sewage treatment plant is calculated, the overload running time T of the sewage treatment plant is compared with the actual continuous overload running time j of the sewage treatment plant, if j is less than or equal to T, the sewage treatment plant continues overload running, and otherwise, step 207 is executed.
Step 210: and controlling the sewage treatment plant to carry out high-load sewage treatment according to the time for the sewage treatment plant to be overloaded.
Compared with the measures of source spongization transformation and pipe network transformation, the intermittent high-load treatment method has the technical characteristics of high investment benefit and obvious effect, can furthest realize the interception and purification of pollutants by the drainage system terminal control system, exerts the maximum benefit of the rain and sewage cooperative treatment measures, strictly controls the discharge overflow amount of the dry season discharge port, and reduces the overflow pollution in the rainy season. Simultaneously, the high-load treatment system is coupled with the storage and regulation system, so that the fluctuation of water quality and water quantity can be effectively reduced, the impact influence on a sewage treatment plant is relieved, and the operation stability of the sewage treatment plant is improved. A high-load mode judgment method is firstly provided, high loads are distinguished according to classes, and a targeted terminal intermittent high-load processing method is provided. The volume of the storage regulation pool is checked by the high-load processing capacity of the system, the mismatching of the processing capacity of the storage regulation facility and the processing capacity of the processing facility is avoided, and the utilization rate of the storage regulation system is improved. The on-line monitoring, the water quality and quantity prediction and the dispatching control system are linked, and the efficient cooperation of the system is realized.
The embodiment of the invention also provides a regulating and storing tank coupling high-load sewage treatment device. Please see the examples below.
Fig. 3 is a block diagram of a storage tank coupled with a high-load sewage treatment device according to an embodiment of the present invention. Referring to fig. 3, a storage tank coupled high-load sewage treatment apparatus includes:
the sewage treatment plant mode judgment module 301 is used for judging the mode of the sewage treatment plant according to the pre-acquired historical sewage treatment plant water amount information or pipe network flow monitoring information; the sewage treatment plant mode comprises a continuous high-load mode and an intermittent high-load mode;
a volume water amount calculation module 302, configured to calculate, according to monitoring data, a volume of a storage tank and a predicted amount of sewage if the mode of the sewage treatment plant is the intermittent high-load mode;
the working condition judgment module 303 is used for judging the working condition according to the volume of the storage tank, the predicted sewage amount and the designed water amount of a sewage treatment plant; the working conditions comprise a storage tank water storage working condition and a high-load treatment working condition of a sewage treatment plant;
the water quantity control module 304 is used for controlling the sewage treatment plant to carry out high-load sewage treatment if the working condition is a high-load treatment working condition of the sewage treatment plant; and if the working condition is a storage water working condition of the storage tank, controlling the storage tank to store water.
The device realizes the scheduling and prediction of the regulated water quantity and the high-load treated water quantity through online monitoring, data coupling prediction simulation, regulation and high-load treatment and intelligent control, deeply excavates the treatment potential of a terminal treatment facility of the drainage system, furthest realizes the interception and purification of a terminal control system of the drainage system on pollutants, exerts the maximum benefit of a rainwater and sewage cooperative treatment measure, strictly controls the overflow quantity of a drainage outlet in dry seasons, reduces the overflow pollution in rainy seasons, and can quickly realize the quality improvement and the efficiency improvement of the drainage system on the basis of lower cost and shorter time on the existing drainage system.
In order to more clearly introduce a hardware system for implementing the embodiment of the invention, the embodiment of the invention also provides a regulation and storage tank coupled high-load sewage treatment system, which corresponds to the regulation and storage tank coupled high-load sewage treatment method provided by the embodiment of the invention. Please see the examples below.
Fig. 4 is a structural diagram of a high-load sewage treatment system coupled with a storage tank according to an embodiment of the present invention. Referring to fig. 4, a storage tank coupled high-load sewage treatment system includes:
the system comprises a flow distribution unit 1, a storage regulation unit 2, a water distribution unit 3 and a controller 5; the flow distribution unit 1 is communicated with the storage regulation unit 2, and the flow distribution unit 1 and the storage regulation unit 2 are both communicated with an external sewage treatment plant 4 through a water distribution unit 3; and the controller 5 is respectively connected with the flow distribution unit 1, the regulation and storage unit 2 and the water distribution unit 3 and is at least used for executing a regulation and storage tank coupling high-load sewage treatment method.
Wherein, intelligent reposition of redundant personnel well 1.2 is connected with inlet tube 1.1 that is used for intaking in the reposition of redundant personnel unit 1, is equipped with the first level gauge 1.3 of detectable pipe network liquid level and highly is the overflow weir 1.6 of h in the intelligent reposition of redundant personnel well 1.2, and interior drain pipe 1.4 links to each other with water distribution unit 3, and overflow pipe 1.7 links to each other with the overflow mouth, and drain pipe 1.5 links to each other with regulation unit 2.
The drain pipe 1.5 is communicated with the regulation and storage tank main body 2.2, the electric control valve 2.1 is arranged on the drain pipe 1.5, the second liquid level meter 2.3 is arranged in the regulation and storage tank main body 2.2, and the drain pipe 2.4 is connected with the water distribution unit 3.
The drain pipe 1.4 links to each other with first water pump 3.1, drain pipe 2.4 links to each other with second water pump 3.2, first water pump 3.1 links to each other with drain pipe 3.3, second water pump 3.2 links to each other with drain pipe 3.4, wherein first water pump 3.1 is connected the inside water pump set of high load treatment sewage treatment plant 4.2, set up sewage treatment plant real-time on-line monitoring system 4.1 in the sewage treatment plant 4.2 of high load treatment, include but not limited to ammonia nitrogen monitor, TN monitor, sludge concentration monitor, DO monitor, thermometer etc. tail water is discharged into by drain pipe 4.3 and is accomodate water or recycled water circulation system in the sewage treatment plant 4.2 of high load treatment.
The PLC controller 5.1 in the controller 5 is connected with real-time online monitoring equipment such as a first liquid level meter 1.3, a second liquid level meter 2.3, a real-time online monitoring system 4.1 of a sewage treatment plant, a rainfall data interface 5.3 and the like, the PLC controller 5.1 is connected with an intelligent control terminal 5.2, data transmitted by the online monitoring equipment is stored and calculated at the intelligent control terminal 5.2 in real time, a feedback signal passes through the PLC controller 5.1 to control the height of an overflow weir 1.6, an electric control valve 2.1 is switched on and off, a first water pump 3.1 flow, a second water pump flow 3.2, the sludge concentration, the reflux quantity, the aeration quantity, the dosing quantity and the like of a high-load treatment sewage treatment plant 4.2.
The intermittent high-load treatment method in the present application will now be described in detail by taking the drainage system in fig. 4 as an example. The method comprises the following specific steps: in fig. 4, the water inlet source at the tail end of the drainage system is a diversion drainage system in a certain basin in the north, the system has a small number of mixed and staggered connections and partial confluence control areas, and the fluctuation of the water volume of the areas from day to day is strong. The operation process of the intermittent high-load treatment device at the tail end of the drainage system is as follows, firstly, the high-load mode is judged. The sewage treatment plant is diagnosed and evaluated, the high-load treatment unit is strengthened, and the sewage treatment plant can realize the additional 13 percent of the designed water quantity Q of the sewage treatment plant by combining the online monitoring and feedback control measuresIs provided withHigh load handling of, i.e. QHeight ofMore than or equal to 13 percent of designed water quantity Q of sewage treatment plantIs provided with，Q Height of1 ten thousand m3The method has high load treatment conditions, and through statistical analysis, the number of the overload days per month of the system in dry seasons in the time period can exceed 4 days, namely n is more than 3 days and less than or equal to 14 days, and the sewage treatment plant has intermittent high loadThe load treatment condition adopts an intermittent high-load treatment system control method.
Then V is determined according to the overflow control rate of the discharge port1When the overflow control rate in dry season reaches 90 percent, V1Is 16041m3，V2The storage capacity is regulated for the hourly water fluctuation of the sewage treatment plant and is calculated to be 7086m3. The calculation of the storage volume of the pipe network is not considered in the example, namely V is V in the example1+V2＝23127m3。
Through statistical analysis, the average overflow time per time of the discharge port of the dry season in the region is 6.5 days (namely the continuous water storage time K of the storage tank is 7 days), the average time interval of the two overflows of the region is 8.7 days (namely the available continuous processing time is 9 days), and the 7-day storage regulation amount 23127m is obtained when the control rate of the overflow of the dry season reaches 90 percent3Less than the single-day high-load treatment water quantity Q of the sewage treatment plantHeight ofNamely, the rainwater storage sewage in the water storage period can be treated by a high-load sewage treatment plant. Meanwhile, the predicted sewage quantity Q of the 14-day sewage treatment plant is calculated according to the methodPreliminary. And judging the working condition according to the working condition judgment process, and then controlling and dispatching according to the working condition. Please refer to fig. 5 and fig. 6 for a specific process.
FIG. 5 shows the overflow condition of the region from 12/1/2019 to 29/02/2020 and the operation condition of a sewage treatment plant, and it can be seen that the overflow of the system takes 39 days altogether, the overflow probability is 43%, and the total overflow quantity is 58945m3Total treatment capacity of 7169956m in sewage treatment plant3(ii) a During overflow, the average value of the water inflow of the sewage treatment plant is 79997m3Reaching the upper limit of treatment in sewage treatment plants; mean value of water inflow of sewage treatment plant of 77886m without overflow3At present, overflow is frequent, the overflow amount is large, and a sewage treatment plant runs at full load. Fig. 6 shows the control effect of overflow pollution of the intermittent high-load treatment system, and it can be seen that when the system builds the regulation tank, the regulation tank is coupled with the overload treatment of the sewage treatment plant, the online monitoring control system is additionally arranged, the parameters such as the reflux quantity, the aeration quantity, the sludge concentration and the like of the sewage treatment plant are reasonably adjusted, the online monitoring, the water quality and water quantity prediction and the scheduling control system are linked, and the efficient cooperation of the system is realized. The regional intermittent high-load treatment system achieves good overflowThe pollution control effect is that high-load treatment is started twice from 1 month in 2019 to 29 months in 2020 and 02, 29 days each time, the treatment capacity of a sewage treatment plant reaches 8.5 km3D, the overflow quantity of the system is greatly reduced, the overflow frequency is greatly reduced, 3 days of overflow are generated altogether, the overflow probability is 3 percent, and the total overflow quantity is 7590m3Cut down to 51356m3The reduction rate is 87 percent, and the total treatment capacity of the sewage treatment plant reaches 7213274m3Wherein the water amount of the high-load treatment reaches 43318m 3.
Furthermore, the annual pollutant reduction effect of the intermittent high-load treatment system is checked, the annual repeating rate of the storage tank can reach 30 times, 50 ten thousand square of rainwater and sewage can be reduced through overload treatment of a sewage treatment plant, the number of overflow days of a discharge year is about 23, the COD load is reduced by 77574 kg/year, and the ammonia nitrogen load is reduced by 12512 kg/year. The system can achieve the control target of strictly controlling the overflow quantity of the discharge port in dry seasons and reducing the overflow pollution in rainy seasons, and has obvious effect.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method for treating high-load sewage by coupling a storage tank is characterized by comprising the following steps:
carrying out mode judgment on the sewage treatment plant according to pre-acquired historical sewage treatment plant water amount information or pipe network flow monitoring information; the sewage treatment plant mode comprises a continuous high-load mode and an intermittent high-load mode;
if the sewage treatment plant mode is the intermittent high-load mode, calculating the volume of the storage tank and the predicted sewage amount according to monitoring data;
judging the working condition according to the volume of the storage tank, the predicted sewage amount and the designed water amount of a sewage treatment plant; the working conditions comprise a storage tank water storage working condition and a high-load treatment working condition of a sewage treatment plant;
if the working condition is a high-load treatment working condition of the sewage treatment plant, controlling the sewage treatment plant to carry out high-load sewage treatment; and if the working condition is a storage water working condition of the storage tank, controlling the storage tank to store water.
2. The method of claim 1, wherein the wastewater treatment plant water volume information comprises: the single-day high-load treatment water volume of the sewage treatment plant, the design water volume of the sewage treatment plant and the monthly high-load treatment days of the sewage treatment plant; the pipe network flow monitoring information comprises: historically monitoring the flow, liquid level and rainfall of a pipe network;
the mode judgment of the sewage treatment plant is carried out according to the pre-acquired historical sewage treatment plant water amount information or pipe network flow monitoring information, and comprises the following steps:
comparing the single-day high-load treated water volume of the sewage treatment plant with the designed water volume of the sewage treatment plant to obtain a water volume comparison result;
comparing the monthly high-load processing days with preset high-load processing days to obtain a day comparison result;
and determining the mode of the sewage treatment plant according to the water quantity comparison result and/or the day comparison result.
3. The method of claim 2, wherein the wastewater treatment plant mode comprises: the system does not have high load processing capacity, has continuous high load processing capacity and has intermittent high load processing capacity;
the preset high-load processing days comprise a first preset day and a second preset day; the first preset number of days is less than the second preset number of days;
the determining the sewage treatment plant mode according to the water amount comparison result and/or the day number comparison result includes:
if the water quantity comparison result shows that the single-day high-load treatment water quantity of the sewage treatment plant is less than or equal to the designed water quantity of the sewage treatment plant by the preset multiple, or the monthly high-load treatment days are less than the first preset days, determining that the mode of the sewage treatment plant does not have high-load treatment capacity;
if the water quantity comparison result shows that the single-day high-load treatment water quantity of the sewage treatment plant is greater than or equal to the design water quantity of the sewage treatment plant, and the monthly high-load treatment days are greater than the second preset days, determining that the sewage treatment plant mode is the mode with continuous high-load treatment capacity;
and if the water quantity comparison result shows that the single-day high-load treatment water quantity of the sewage treatment plant is greater than or equal to the design water quantity of the sewage treatment plant, and the monthly high-load treatment days are between the first preset days and the second preset days, determining that the sewage treatment plant mode is the intermittent high-load treatment capacity.
4. The method of claim 2, wherein the sewage treatment plant monitoring data comprises: pipeline network flow monitoring information and overflow monitoring data;
the calculation of the storage tank volume and the predicted sewage amount according to the monitoring data comprises the following steps:
obtaining the daily water quantity control volume of the sewage treatment plant and the hourly water quantity fluctuation regulation and storage volume of the sewage treatment plant according to the overflow monitoring data;
calculating to obtain the volume of the storage tank according to the daily water control volume of the sewage treatment plant and the hourly water fluctuation storage volume of the sewage treatment plant;
and the sewage treatment plant calculates according to the pipe network flow monitoring information to obtain the predicted sewage amount.
5. The method of claim 1, wherein the determining the operation condition based on the storage tank volume, the predicted sewage amount and the design water amount of the sewage treatment plant comprises:
calculating the continuous water storage time of the regulating and storing pool according to the predicted existing water storage amount of the regulating and storing pool, the capacity of the regulating and storing pool, the predicted sewage amount and the designed water amount of a sewage treatment plant;
and comparing the continuous water storage time of the storage tank with the preset minimum water storage time and the preset maximum water storage time to determine the working condition.
6. The method of claim 5, wherein the comparing the storage tank continuous water storage time with a preset minimum water storage time and a preset maximum water storage time to determine the operating condition comprises:
if the continuous water storage time of the regulating storage tank is less than the preset minimum water storage time, comparing the predicted actual continuous water storage time of the regulating storage tank with the preset minimum water storage time;
if the actual continuous water storage time of the storage tank is less than or equal to the preset minimum continuous water storage time, judging that the working condition is the water storage working condition of the storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant;
if the continuous water storage time of the regulating storage tank is between the preset minimum water storage time and the preset maximum water storage time, comparing the actual continuous water storage time of the regulating storage tank with the continuous water storage time of the regulating storage tank;
if the actual continuous water storage time of the storage tank is less than or equal to the continuous water storage time of the storage tank, judging that the working condition is the storage water working condition of the storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant;
if the continuous water storage time of the regulating and storing pool is longer than the preset maximum water storage time, comparing the actual continuous water storage time of the regulating and storing pool with the preset maximum water storage time;
if the actual continuous water storage time of the storage tank is less than or equal to the preset maximum continuous water storage time, judging that the working condition is the water storage working condition of the storage tank; otherwise, judging the working condition to be a high-load treatment working condition of the sewage treatment plant.
7. The method according to claim 5, wherein if the operating condition is a high-load treatment operating condition of a sewage treatment plant, the method further comprises the following steps:
and calculating the time for the sewage treatment plant to be overloaded according to the predicted existing water quantity of the storage tank, the predicted sewage quantity, the designed water quantity of the sewage treatment plant and the preset maximum high-load treatment time of the sewage treatment plant.
8. The method of claim 7, further comprising:
comparing the running time of the sewage treatment plant to be overloaded with the actual high-load treatment time of the sewage treatment plant known in advance;
and if the running time of the sewage treatment plant to be overloaded is less than or equal to the actual high-load treatment time of the sewage treatment plant, controlling the sewage treatment plant to carry out high-load sewage treatment.
9. The utility model provides a regulation pond coupling high load sewage treatment plant which characterized in that includes:
the sewage treatment plant mode judgment module is used for judging the mode of the sewage treatment plant according to the pre-acquired historical sewage treatment plant water amount information or pipe network flow monitoring information; the sewage treatment plant mode comprises a continuous high-load mode and an intermittent high-load mode;
the volume water amount calculation module is used for calculating the volume of the storage tank and predicting the sewage amount according to monitoring data if the mode of the sewage treatment plant is the intermittent high-load mode;
the working condition judgment module is used for judging the working condition according to the volume of the storage tank, the predicted sewage amount and the designed water amount of a sewage treatment plant; the working conditions comprise a storage tank water storage working condition and a high-load treatment working condition of a sewage treatment plant;
the water quantity control module is used for controlling the sewage treatment plant to carry out high-load sewage treatment if the working condition is a high-load treatment working condition of the sewage treatment plant; and if the working condition is a storage water working condition of the storage tank, controlling the storage tank to store water.
10. A regulation pond coupling high load sewage treatment system which is characterized by comprising:
the system comprises a flow distribution unit, a storage regulation unit, a water distribution unit and a controller;
the flow distribution unit is communicated with the storage regulation unit, and both the flow distribution unit and the storage regulation unit are communicated with an external sewage treatment plant through the water distribution unit;
the controller is respectively connected with the flow dividing unit, the storage adjusting unit and the water distribution unit and is at least used for executing the storage adjusting tank coupling high-load sewage treatment method according to any one of claims 1 to 8.
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