Key indicator system for balancing and regulating sewage inflow and sewage treatment method thereof

Abstract

The present invention relates to the technical field of sewage treatment equipment, and in particular to a system for balancing and regulating key indicators of sewage inlet and a sewage treatment method thereof, comprising a regulating tank, a storage tank A, a storage tank B, a sensor and a controller for monitoring sewage indicator values, one end of the regulating tank being connected to an inlet channel for inputting sewage, the input ends of the storage tank A and the storage tank B being connected to the inlet channel, the output ends of the storage tank A and the storage tank B being connected to the regulating tank, and a first valve being provided between the input ends of the storage tank A and the storage tank B and the inlet channel. When in use, the sewage indicator threshold is monitored by a monitoring device, and water with the required indicator threshold is cached in a storage container so that the stored water can be used when needed, thereby achieving the purpose of improving water quality fluctuations at an extremely low cost, effectively reducing drug costs, and facilitating the control of subsequent production processes.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment, and in particular to a system for balancing and regulating key indicators of sewage inflow and a sewage treatment method thereof. Background Art

[0002] The complex wastewater sources at current industrial park wastewater treatment plants result in significant fluctuations in water quality at the inlet, including key indicators like pH and COD. This can directly impact production control at downstream process nodes, making it more difficult to meet wastewater standards and increasing the amount of chemical dosing required. Furthermore, preliminary research has found no similar solutions for storing excess water to offset and neutralize inflow fluctuations.

[0003] Existing technologies do not treat the incoming water quality, but instead mix the incoming water in a larger container, called an equalization tank. Its essence is to utilize a larger tank volume and extended mixing time to improve the fluctuation range of water quality discharged to subsequent process nodes, thereby reducing the frequency and difficulty of production process control. The disadvantages of this technology are: first, it takes a long time to mix to the standard range; second, the tank volume is limited, and the control efficiency is very poor when the incoming water volume is large or the indicators fluctuate greatly; third, process control does not rely on indicator data monitoring, so the actual effect is not ideal. The ups and downs of key indicators in the equalization tank often cause water quality to exceed the standard and production costs to increase significantly. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problems of long process time, poor control efficiency, unsatisfactory data and high reagent cost in the prior art, a system for balancing and regulating key indicators of sewage inflow and a sewage treatment method thereof are provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a system for balanced regulation of key indicators of sewage inlet, including a regulating tank, a storage tank A, a storage tank B, a sensor for monitoring sewage index values ​​and a controller, one end of the regulating tank is connected to an inlet channel for inputting sewage, the input ends of the storage tank A and the storage tank B are both connected to the inlet channel, the output ends of the storage tank A and the storage tank B are both connected to the regulating tank, a first valve is provided between the input ends of the storage tank A and the storage tank B and the inlet channel, a second valve is provided between the output ends of the storage tank A and the storage tank B and the regulating tank, the sensor is provided in the inlet channel, the sensor, the first valve and the second valve are all connected to the controller signal, the controller analyzes the monitoring data and controls the first valve and the second valve to open or close.

[0006] The present invention stores sewage with different index values ​​in several storage containers, and opens or closes the first valve and the second valve of the corresponding storage container through a controller according to the monitoring data of the sensor, and stores sewage with a specified range of values ​​in the storage container, or discharges sewage with a specified range of values ​​into a regulating tank for water quality regulation.

[0007] Furthermore, the sewage index value is pH value, COD value, total nitrogen value, total phosphorus value, ammonia nitrogen value or TOC value. The above pH, COD, etc. are just examples and are not specific. There are many sewage indicators and they can be flexibly selected according to needs.

[0008] A sewage treatment method for balancing and regulating the key indicator system of sewage inflow comprises the following steps:

[0009] S1. Set the sewage index thresholds in the controller. The index thresholds are L0, L1, L2 and L3, where L2>L0>L1>L3;

[0010] S2. Sewage is fed into the regulating tank through the water inlet channel. The sensor monitors the sewage index value h in real time and transmits the monitored data to the controller, which analyzes and processes the data.

[0011] When h≥L2 and lasts for S0 seconds, open the first valve of storage tank A and let water in, until h<L2 and lasts for S1 seconds, then close the first valve of storage tank A;

[0012] When h≤L3 and lasts for S0 seconds, open the first valve of storage tank B and let water in, until h>L3 and lasts for S1 seconds, then close the first valve of storage tank B;

[0013] When h≥L0 and lasts for S2 seconds, open the second valve of storage tank B and discharge water to the regulating tank, until h<L0 and lasts for S3 seconds, and then close the second valve of storage tank B;

[0014] When h≤L1 and lasts for S2 seconds, the second valve of storage tank A is opened and water is discharged to the regulating tank. When h>L1 and lasts for S3 seconds, the second valve of storage tank A is closed. Based on the range of monitored sewage index values, the controller opens or closes the first valve and second valve on storage tank A or storage tank B to ensure that sewage within the required index value range is stored in the storage container, or sewage within the required index value range is discharged to the regulating tank for regulation.

[0015] The beneficial effects of the present invention are as follows: when the system for balanced regulation of key indicators of sewage inlet and the sewage treatment method thereof are used, sensors are used to monitor sewage indicator values, and corresponding storage pool A or storage pool B is used to cache incoming water with required indicator values, so that the stored water can be used when needed, thereby improving the problem of water quality fluctuation at an extremely low cost, effectively reducing the cost of medication, facilitating the control of subsequent production processes, and avoiding the long time required for mixing to the standard range in the prior art; the pool volume is limited, and the control efficiency is very poor when the incoming water volume is large or the key indicators fluctuate greatly; the process control does not rely on indicator data monitoring, and thus often causes problems such as water quality exceeding standards and a substantial increase in production costs due to large fluctuations in the key indicators of the regulating pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a process flow chart of the present invention;

[0019] Figure 3 It is a schematic diagram of the range of sewage threshold value in the present invention.

[0020] In the figure: 1. regulating tank, 2. storage tank A, 3. sensor, 4. controller, 5. first valve, 6. second valve, 7. water inlet channel, 8. storage tank B. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the embodiments:

[0022] The present invention is not limited to the following specific embodiments. Based on the disclosure of the present invention, a person skilled in the art may adopt a variety of other specific embodiments to implement the present invention. Any simple changes or modifications made to the design structure and concept of the present invention fall within the scope of protection of the present invention. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other unless they conflict.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0025] like Figure 1-3 As shown, a system for balancing and regulating key indicators of sewage inflow includes a regulating tank 1, a storage tank A2, a storage tank B8, a sensor 3 for monitoring sewage indicator values, and a controller 4. One end of the regulating tank 1 is connected to an inlet channel 7 for inputting sewage. The input ends of the storage tanks A2 and B8 are both connected to the inlet channel 7. The output ends of the storage tanks A2 and B8 are both connected to the regulating tank 1. A first valve 5 is provided between the input ends of the storage tanks A2 and B8 and the inlet channel 7. A second valve 6 is provided between the output ends of the storage tanks A2 and B8 and the regulating tank 1. The sensor 3 is provided in the inlet channel 7. The sensor 3, the first valve 5, and the second valve 6 are all connected to the controller 4 for signal transmission. The controller 4 analyzes the monitoring data and controls the opening or closing of the first valve 5 and the second valve 6. The sensor 3 here is a pH sensor or a COD sensor, and the storage tank can also be a storage tank, etc.

[0026] The sewage indicator values ​​are pH, COD, total nitrogen, total phosphorus, ammonia nitrogen, or TOC. A pH sensor monitors the pH of the sewage, while a COD sensor monitors the COD of the sewage. The two systems operate independently of each other, each having at least two corresponding storage tanks A2 and B8 storing sewage with different indicator values. Water quality is regulated by controller 4.

[0027] A sewage treatment method for balancing and regulating the key indicator system of sewage inflow as described above comprises the following steps:

[0028] S1. Set the index thresholds of sewage in the controller 4, and the index thresholds are L0, L1, L2 and L3 respectively, where L2>L0>L1>L3; where L0 is the upper limit of the allowable range, L1 is the lower limit of the allowable range, L2 is the ultra-high critical value, L3 is the ultra-low critical value, the area between L0 and L1 is the allowable inaction area, the area between L0 and L2 is the ultra-inaction upper limit area, and the area between L1 and L3 is the ultra-inaction lower limit area.

[0029] S2. Sewage is input into the regulating tank 1 through the water inlet channel 7. The sensor 3 monitors the sewage index value h in real time and transmits the monitored data to the controller 4, which analyzes and processes the data.

[0030] When h≥L2 and lasts for S0 seconds, the first valve 5 of the storage tank A2 is opened and water is introduced, and the first valve 5 of the storage tank A2 is closed after h<L2 and lasts for S1 seconds;

[0031] When h≤L3 and lasts for S0 seconds, the first valve of storage tank B is opened to allow water to flow in. When h>L3 and lasts for S1 seconds, the first valve 5 of storage tank B8 is closed.

[0032] When h≥L0 and lasts for S2 seconds, the second valve 6 of the storage tank B8 is opened and water is discharged to the regulating tank 1, until h<L0 and lasts for S3 seconds, and the second valve 6 of the storage tank B8 is closed;

[0033] When h≤L1 and lasts for S2 seconds, the second valve 6 of the storage tank A2 is opened and water is discharged to the regulating tank 1, until h>L1 and lasts for S3 seconds and the second valve 6 of the storage tank A2 is closed.

[0034] When the above-mentioned system for balancing and regulating the key indicators of sewage inlet and the sewage treatment method thereof are in use, when the pH sensor 3 monitors that the water quality index value is greater than L0 and lasts for S0 seconds, the water quality is judged to be alkaline, and the controller 4 opens the second valve 6 of the storage tank B8 storing acidic sewage and discharges water to the regulating tank 1, until the water quality value falls back to between the monitoring index values ​​L0 and L1 and lasts for S1 seconds, then the second valve 6 of the storage tank B8 is closed, or the monitoring index value is less than L1 and lasts for S0 seconds, at this time it is judged that the water quality is acidic, and the controller 4 opens the second valve 6 of the storage tank A2 storing alkaline sewage and discharges water to the regulating tank 1, until the water quality value falls back to between the monitoring index values ​​L0 and L1 and lasts for S1 seconds, then the second valve 6 of the storage tank A2 is closed, when the pH sensor 3 When it is detected that the water quality index value is greater than L2 and lasts for S2 seconds, the water quality is judged to be super alkaline. The controller 4 opens the first valve 5 on the storage tank A2 for storing alkaline sewage and stores water until the water quality value drops back to the monitoring index value less than L2 and lasts for S3 seconds, and then closes the first valve 5 on the storage tank A2. When the pH sensor 3 detects that the water quality index value is less than L3 and lasts for S3 seconds, the water quality is judged to be super acidic. The controller 4 opens the first valve 5 on the storage tank B8 for storing acidic sewage and stores the incoming water until the water quality value drops back to the monitoring index value greater than L3 and lasts for S1 second, and then closes the first valve 5 of the storage tank B8. The above is an application example of the pH sensor. Similarly, the pH sensor can also be replaced by a COD sensor and its application principle is the same.

[0035] The above description of the preferred embodiments of the present invention is intended to serve as a guide. Based on the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A system for balancing and regulating key indicators of sewage inflow, characterized by: It includes an adjustment tank (1), a storage tank A (2), a storage tank B (8), a sensor (3) for monitoring sewage index values, and a controller (4). One end of the adjustment tank (1) is connected to an inlet channel (7) for inputting sewage. The input ends of the storage tank A (2) and the storage tank B (8) are both connected to the inlet channel (7). The output ends of the storage tank A (2) and the storage tank B (8) are both connected to the adjustment tank (1). First valves (5) are provided between the input ends of the storage tank A (2) and the storage tank B (8) and the inlet channel (7). Second valves (6) are provided between the output ends of the storage tank A (2) and the storage tank B (8) and the adjustment tank (1). The sensor (3) is arranged in the inlet channel (7). The sensor (3), the first valves (5), and the second valves (6) are all connected to the controller (4) in a signal manner. The controller (4) analyzes the monitoring data and controls the opening or closing of the first valves (5) and the second valves (6), and realizes storing sewage within a specified range value in the storage tank A (2) and the storage tank B (8), and discharging the sewage within the specified range value into the adjustment tank (1) for water quality adjustment; Index thresholds of sewage are set in the controller (4), and the index thresholds are L0, L1, L2, and L3 respectively, where L2 > L0 > L1 > L3. The sensor (3) monitors the sewage index value h in real time. When h ≥ L2, the first valve (5) of the storage tank A (2) is opened and water enters until h < L2. When h ≤ L3, the first valve (5) of the storage tank B (8) is opened and water enters until h > L3.

2. The system for balancing and regulating key indicators of sewage inflow according to claim 1, characterized in that: The sewage index value is pH value, COD value, total nitrogen value, total phosphorus value, ammonia nitrogen value or TOC value.

3. A sewage treatment method for a system for balanced regulation of key sewage inlet indicators according to any one of claims 1 to 2, characterized in that: It includes the following steps, S1. Set the index thresholds of sewage in the controller (4), and the index thresholds are L0, L1, L2, and L3 respectively, where L2 > L0 > L1 > L3; S2. Sewage is input into the adjustment tank (1) through the inlet channel (7). The sensor (3) monitors the sewage index value h in real time and transmits the monitored data to the controller (4). The controller (4) analyzes and processes the data; When h ≥ L2 and after lasting for S0 seconds, the first valve (5) of the storage tank A (2) is opened and water enters until h < L2 and after lasting for S1 seconds, the first valve (5) of the storage tank A (2) is closed; When h ≤ L3 and after lasting for S0 seconds, the first valve (5) of the storage tank B (8) is opened and water enters until h > L3 and after lasting for S1 seconds, the first valve (5) of the storage tank B (8) is closed; When h ≥ L0 and after lasting for S2 seconds, the second valve (6) of the storage tank B (8) is opened and water is discharged to the adjustment tank (1) until h < L0 and after lasting for S3 seconds, the second valve (6) of the storage tank B (8) is closed; When h ≤ L1 and after lasting for S2 seconds, the second valve (6) of the storage tank A (2) is opened and water is discharged to the adjustment tank (1) until h > L1 and after lasting for S3 seconds, the second valve (id=6) of the storage tank A (2) is closed.

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