Method and device for detecting and monitoring water quality after sewage treatment

Abstract

The invention discloses a method and a device for detecting and monitoring water quality after sewage treatment, and the method comprises the following steps: setting two storage containers for containing treated sewage, when one storage container receives the treated water, storing the treated water in the other storage container, and storing the treated water in the other storage container; the water contained in the other storage container is used for detection and is emptied after being detected to be qualified; and then the two storage containers are alternately switched to detect and receive the treated discharge water. According to the invention, one storage container is used for receiving treated sewage, and the other storage container is used for detecting, so that the water quality of the sewage is continuously detected and monitored, and substandard sewage discharge is avoided; according to the method, the hysteresis problem of a traditional detection device is effectively solved, it is ensured that sewage is detected before each discharge stage, and the safety and reliability of sewage treatment are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage detection, and specifically relates to a method and device for detecting and monitoring the water quality after sewage treatment. Background Art

[0002] In rural areas and scenic spots, the distance from the municipal pipe network is relatively far, or there are obstacles that prevent pipeline laying. The amount of sewage generated is small, generally 100 m 3 / d, and at most 200 m 3 / d; In such areas, integrated sewage treatment devices are widely used to treat sewage. This treatment device requires the detection device to be able to automatically and real-time monitor sewage indicators, and transmit data remotely to give early warnings of abnormal situations in a timely manner to ensure the sewage treatment effect.

[0003] The current sewage discharge detection devices basically collect water samples for detection regularly. The frequency is determined according to the requirements of the environmental protection department for detection and upload, generally once an hour. Any instrument requires time for water sampling and detection. During this period, the sewage is discharged. If the treatment device fails, the unqualified sewage will be discharged during this period, causing pollution. Even within the time from the completion of detection in one hour to the completion of the next water sampling and detection, there may still be situations where the detection fails. The water sampling and detection time takes fifty minutes. If the sewage discharged during this period is unqualified, it will cause great pollution to the natural water body. And these devices have a common feature that they have high requirements for the environment, requiring constant temperature and humidity, and need an air-conditioned enclosed building to ensure the temperature and humidity, resulting in high costs. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems and provide a method and device for detecting and monitoring the water quality after sewage treatment.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions to implement:

[0006] A method for detecting and monitoring the water quality after sewage treatment includes the following steps:

[0007] Set two storage containers to hold the treated sewage. When one storage container receives the treated water, the water received and held in the other storage container is used for detection and is emptied after passing the detection; then the two storage containers are alternately switched for detection and receiving the treated discharged water.

[0008] Further, the specific steps are as follows:

[0009] Step 1: Connect the sewage discharge port after sewage treatment to the first buffer tank and the second buffer tank through the first pipeline; control the on-off of the first pipeline to convey sewage to the first buffer tank. After the first buffer tank has been filled with water for a fixed period of time, stop the water inlet and start filling the second buffer tank.

[0010] Step 2: While the second buffer water tank is being filled with water, sewage in the first buffer water tank starts to be discharged into the sampling pool. After the sampling pool is filled with sewage samples, the water quality of the sewage samples in the sampling pool is detected by a water quality detection instrument. While the sampling and detection are being carried out, the second buffer water tank is being filled with water.

[0011] Step 3: After the sewage sampling and detection in the first buffer water tank are completed, it is judged whether the water quality meets the standard. If the water quality does not meet the standard, the machine is stopped for maintenance; if the water quality meets the standard, the sewage in the first buffer water tank is discharged. After the sewage in the first buffer water tank is emptied, the water supply to the second buffer water tank is stopped, and the water supply is switched to the first buffer water tank.

[0012] Step 4: While the first buffer water tank is being filled with water, the second buffer water tank starts to discharge sewage into the sampling pool. After the sampling pool is filled with sewage samples, the water quality of the sewage samples in the sampling pool is detected by a water quality detection instrument.

[0013] Step 5: After the sewage sampling and detection in the second buffer water tank are completed, it is judged whether the water quality meets the standard. If the water quality does not meet the standard, the machine is stopped for maintenance; if the water quality meets the standard, the sewage in the second buffer water tank is discharged. After the sewage in the second buffer water tank is emptied, the water supply to the first buffer water tank is stopped, and the water supply is switched to the second buffer water tank.

[0014] Step 6: The sewage in the first buffer water tank and the second buffer water tank is sampled and detected alternately in cycles according to the above steps 2, 3, 4, and 5.

[0015] Further, after the detection is completed, the water quality detection instrument uploads the water quality detection data to the monitoring server through the network.

[0016] The present invention also provides a water quality detection and monitoring device for sewage treatment after treatment, which is used to implement the above method, including a first buffer water tank and a second buffer water tank. The first buffer water tank and the second buffer water tank are connected to the treated sewage source to be discharged through a water inlet pipe to introduce the treated sewage into the first buffer water tank or the second buffer water tank. A first sampling pipe is arranged at the bottom of the first buffer water tank, and a sampling pool is arranged at the bottom of the first buffer water tank. The first sampling pipe is connected to the sampling pool to introduce the water in the first buffer water tank into the sampling pool; a second sampling pipe is arranged in the middle of the second buffer water tank, and the second sampling pipe is connected to the sampling pool to introduce the water in the second buffer water tank into the sampling pool; the sampling pool is connected to a water quality detection instrument.

[0017] Further, a first electromagnetic valve is arranged on the first sampling pipe to control the sewage from flowing into the sampling pool; a second electromagnetic valve is arranged on the second sampling pipe.

[0018] Further, a third electromagnetic valve is arranged on the water inlet pipe to control the treated sewage from flowing into the first buffer water tank or the second buffer water tank.

[0019] Further, the first buffer water tank and the second buffer water tank are both equipped with liquid level sensors.

[0020] Further, the water quality detection instrument is provided with a data transmission module, and uploads the detection data to the monitoring platform in real time.

[0021] Further, the first buffer water tank, the second buffer water tank and the sampling pool are all buried in the ground, and the upper ends of the first buffer water tank and the second buffer water tank are covered with ground cover.

[0022] Further, the first buffer water tank, the second buffer water tank and the sampling pool are all provided with drain pipes, and on the drain pipes, there are all on-off valves for controlling the on-off of the drain pipes.

[0023] A water quality detection and monitoring method and device after sewage treatment provided by the present invention have the following beneficial effects: By using one storage container to receive the treated sewage and another storage container for detection, it ensures continuous detection and monitoring of the sewage water quality, avoids the discharge of unqualified sewage, improves the detection efficiency, and reduces the environmental risk; at the same time, simplifies the equipment requirements, reduces the dependence on constant temperature and humidity, adapts to the budget constraints in rural areas, and guarantees the sewage treatment effect and the health of residents; this method effectively solves the lag problem of traditional detection devices, ensures that the sewage is detected before each discharge stage, and greatly improves the safety and reliability of sewage treatment. In addition, the design of alternating detection reduces the equipment operation cost, is more suitable for popularization and application in rural areas, and truly realizes the dual benefits of environmental protection and economy. The sewage is alternately stored in the storage container before discharge and is discharged only after passing the detection, so that all the sewage is discharged after reaching the standard, realizing zero discharge of unqualified sewage and eliminating possible water pollution problems. Description of the Drawings

[0024] The following further describes in detail the specific embodiments of the present invention with reference to the drawings:

[0025] Figure 1 It is a schematic flow chart of a water quality detection and monitoring method after sewage treatment provided by the present invention;

[0026] Figure 2 It is a schematic structural diagram of a water quality detection and monitoring device after sewage treatment provided by the present invention.

[0027] Explanation of the reference numerals in the drawings: 1. First buffer water tank; 2. Second buffer water tank; 3. First sampling pipe; 4. Second sampling pipe; 5. Sampling pool; 6. First electromagnetic valve; 7. Second electromagnetic valve; 8. Third electromagnetic valve; 9. Liquid level sensor; 10. Water quality detection instrument; 11. Water inlet pipe. Specific Embodiments

[0028] It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. The connection described herein can be a direct connection or an indirect connection.

[0031] A method for detecting and monitoring the water quality after sewage treatment includes the following steps:

[0032] Set two storage containers to hold the treated sewage. When one storage container receives the treated water, the other storage container receives the water for detection and empties it after passing the detection; then the two storage containers are alternately switched for detection and receiving the treated discharged water.

[0033] With the above technical solution, after the sewage is treated, it needs to be detected and qualified before being discharged. In this application, one storage container receives the treated sewage, and the other storage container conducts the detection, ensuring continuous detection and monitoring of the sewage water quality, avoiding the discharge of unqualified sewage, improving the detection efficiency, and reducing the environmental risk. At the same time, it simplifies the equipment requirements, reduces the dependence on constant temperature and humidity, adapts to the budget constraints in rural areas, and ensures the sewage treatment effect and the health of residents; this method effectively solves the lag problem of traditional detection devices, ensures that the sewage is detected before each discharge stage, and greatly improves the safety and reliability of sewage treatment. In addition, the design of alternating detection reduces the equipment operation cost, is more suitable for popularization and application in rural areas, and truly realizes the dual benefits of environmental protection and economy; the sewage is alternately stored in the storage container before being discharged and is discharged only after passing the detection, so that all the sewage is discharged after reaching the standard, realizing zero discharge of unqualified sewage and preventing possible water pollution problems.

[0034] The specific steps are as follows:

[0035] Step 1: Connect the sewage discharge outlet after sewage treatment to the first buffer tank 1 and the second buffer tank 2 through the first pipeline; control the on-off of the first pipeline to convey sewage to the first buffer tank 1. After the first buffer tank 1 has been filled with water for a fixed period of time, stop the water inlet and start filling the second buffer tank 2.

[0036] Step 2: While the second buffer tank 2 is being filled with water, the sewage in the first buffer tank 1 starts to be discharged into the sampling pool 5. After the sampling pool 5 is filled with sewage samples, use the water quality detection instrument 10 to detect the water quality of the sewage samples in the sampling pool 5. During the sampling and detection, the second buffer tank 2 continues to be filled with water.

[0037] Step 3: After the sewage sampling and detection in the first buffer tank 1 are completed, determine whether the water quality meets the standard. If the water quality does not meet the standard, stop the machine for maintenance; if the water quality meets the standard, discharge the sewage in the first buffer tank 1. After the sewage in the first buffer tank 1 is emptied, stop filling the second buffer tank 2 and switch to filling the first buffer tank 1.

[0038] Step 4: While the first buffer tank 1 is being filled with water, the second buffer tank 2 starts to discharge sewage into the sampling pool 5. After the sampling pool 5 is filled with sewage samples, use the water quality detection instrument 10 to detect the water quality of the sewage samples in the sampling pool 5.

[0039] Step 5: After the sewage sampling and detection in the second buffer tank 2 are completed, determine whether the water quality meets the standard. If the water quality does not meet the standard, stop the machine for maintenance; if the water quality meets the standard, discharge the sewage in the second buffer tank 2. After the sewage in the second buffer tank 2 is emptied, stop filling the first buffer tank and switch to filling the second buffer tank 2.

[0040] Step 6: Alternately sample and detect the sewage in the first buffer tank 1 and the second buffer tank 2 according to the above steps 2, 3, 4, and 5, as Figure 1 shown.

[0041] With the above technical solution, when the first buffer tank 1 is being filled with water, the second buffer tank 2 conducts sampling water quality detection and discharges the qualified sewage. After the second buffer tank 2 is emptied, it starts to be filled with water, while the first buffer tank 1 conducts sampling detection, ensuring that the sewage discharged from the buffer tank meets the standard. By alternately sampling the sewage in the first buffer tank 1 and the second buffer tank 2, while one buffer tank is being sampled, the other tank is being replenished with water, so as to ensure that the sewage can be continuously detected at fixed intervals each time.

[0042] After the detection is completed, the water quality detection instrument 10 uploads the water quality detection data to the monitoring server through the network. The monitoring server analyzes the data in real time and generates a report to feedback to the management personnel, which is convenient for timely adjustment of the treatment plan.

[0043] With the above technical solution, by alternately sampling the sewage in the first buffer water tank 1 and the second buffer water tank 2, while one buffer water tank is being sampled, the other water tank is being replenished with water, so as to ensure that the sewage can be continuously detected at fixed intervals each time; and it can ensure that the reception and storage of sewage can be carried out without interruption, and prevent unqualified sewage from being discharged into the external environment.

[0044] The present invention also provides a device for detecting and monitoring the water quality after sewage treatment, which is used to implement the above method. As Figure 2 shown, it includes a first buffer water tank 1 and a second buffer water tank 2. The first buffer water tank 1 and the second buffer water tank 2 are connected to the discharged treated sewage source through a water inlet pipe 11 to introduce the treated sewage into the first buffer water tank 1 or the second buffer water tank 2. A first sampling pipe 3 is arranged at the bottom of the first buffer water tank 1, and a sampling pool 5 is arranged at the bottom of the first buffer water tank 1. The first sampling pipe 3 is connected to the sampling pool 5 for introducing the water in the first buffer water tank 1 into the sampling pool 5; a second sampling pipe 4 is arranged in the middle of the second buffer water tank 2, and the second sampling pipe 4 is connected to the sampling pool 5 for introducing the water in the second buffer water tank 2 into the sampling pool 5; the sampling pool 5 is connected to a water quality detection instrument 10.

[0045] A first electromagnetic valve 6 is arranged on the first sampling pipe 3 to control the sewage to flow into the sampling pool 5; a second electromagnetic valve 7 is arranged on the second sampling pipe 4. By alternately controlling the sewage to flow into the sampling pool 5 through the first electromagnetic valve 6 and the second electromagnetic valve 7, accurate alternate sampling is ensured.

[0046] A third electromagnetic valve 8 is arranged on the water inlet pipe 11 to control the treated sewage to flow into the first buffer water tank 1 or the second buffer water tank 2. Precise switching of the water inlet is achieved. Specifically, the first electromagnetic valve 6, the second electromagnetic valve 7, and the third electromagnetic valve 8 are all switch valves for controlling the on-off of the pipeline.

[0047] Both the first buffer water tank 1 and the second buffer water tank 2 are equipped with liquid level sensors 9. By monitoring the water level change in real time through the liquid level sensors 9, it is ensured that the water replenishment and discharge are carried out synchronously.

[0048] The water quality detection instrument 10 is provided with a data transmission module, which uploads the detection data to the monitoring platform in real time. Ensure the accuracy of the data; according to the data feedback, the monitoring platform automatically adjusts the water inlet and discharge rhythm, optimizes the treatment process, and improves the overall efficiency. Specifically, the data is connected to the management department and the environmental protection department, and the data and operation conditions are monitored in real time. When abnormal conditions occur, the management department and the environmental protection department are notified in time for handling.

[0049] The first buffer water tank 1, the second buffer water tank 2 and the sampling pool 5 are all buried in the ground, and the upper ends of the first buffer water tank 1 and the second buffer water tank 2 are covered with ground cover. By burying the equipment underground and covering it with ground cover, the conditions of constant temperature and humidity can be maintained, the influence of the external environment on the equipment can be reduced, the detection data can be made more accurate, and the detection environment of constant temperature and humidity required for detection can be guaranteed at low cost.

[0050] The first buffer water tank 1, the second buffer water tank 2 and the sampling pool 5 are all provided with drain pipes, and on-off valves for controlling the on-off of the drain pipes are arranged on the drain pipes. It is convenient to control the drainage.

[0051] The parts not involved in this technical solution can be implemented by using the prior art.

[0052] The above shows and describes the basic principles, main features and characteristics of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention includes the appended claims and their equivalents.

Claims

1. A method for monitoring water quality after sewage treatment, characterized in that: Two storage containers are set up to hold treated sewage. When one storage container receives treated water, the other storage container receives the water for testing and is emptied after passing the test; then the two storage containers are switched alternately to test and receive treated discharge water.

2. The method for monitoring water quality after sewage treatment according to claim 1, characterized in that: The specific steps are as follows: Step 1: Connect the sewage outlet after sewage treatment to the first cache water tank (1) and the second cache water tank (2) through the first pipeline; control the first pipeline to be on and off to transport sewage to the first cache water tank (1); after the first cache water tank (1) has been filled with water for a fixed period of time, it stops filling with water and fills the second cache water tank (2); Step 2: while the second buffer water tank (2) is being filled with water, the first buffer water tank (1) begins to discharge sewage into the sampling pool (5); after the sampling pool (5) is filled with sewage samples, the sewage samples in the sampling pool (5) are tested for water quality using a water quality testing instrument (10); and while the sampling test is being performed, water is simultaneously being filled into the second buffer water tank (2); Step 3: After the sewage sampling and testing in the first cache water tank (1) is completed, it is determined whether the water quality meets the standard. If the water quality does not meet the standard, the machine is shut down for maintenance; if the water quality meets the standard, the sewage in the first cache water tank (1) is discharged. After the sewage in the first cache water tank (1) is emptied, the water supply to the second cache water tank (2) is stopped, and the water supply to the first cache water tank (1) is switched; Step 4: while the first buffer water tank (1) is being filled with water, the second buffer water tank (2) begins to discharge sewage into the sampling pool (5); after the sampling pool (5) is filled with sewage samples, the sewage samples in the sampling pool (5) are tested for water quality using a water quality testing instrument (10); Step 5: After the sewage sampling and testing in the second buffer water tank (2) is completed, it is determined whether the water quality meets the standard. If the water quality does not meet the standard, the machine is shut down for maintenance; if the water quality meets the standard, the sewage in the second buffer water tank (2) is discharged. After the sewage in the second buffer water tank (2) is emptied, the water supply to the first buffer water tank is stopped, and the water supply to the second buffer water tank (2) is switched; Step 6: Sampling and testing the sewage in the first cache water tank (1) and the second cache water tank (2) is carried out in a cycle in alternating manner according to the above steps 2, 3, 4, and 5.

3. The method for monitoring water quality after sewage treatment according to claim 2, characterized in that: After the detection is completed, the water quality detection instrument (10) uploads the water quality detection data to the monitoring server via the network.

4. A device for monitoring the quality of water after sewage treatment, used for implementing the method for monitoring the quality of water after sewage treatment according to claim 2, characterized in that: The invention comprises a first cache water tank (1) and a second cache water tank (2); the first cache water tank (1) and the second cache water tank (2) are connected to a treated sewage source through a water inlet pipe (11) so as to introduce the treated sewage into the first cache water tank (1) or the second cache water tank (2); a first sampling pipe (3) is arranged at the bottom of the first cache water tank (1); a sampling pool (5) is arranged at the bottom of the first cache water tank (1); the first sampling pipe (3) is connected to the sampling pool (5) for introducing water in the first cache water tank (1) into the sampling pool (5); a second sampling pipe (4) is arranged in the middle of the second cache water tank (2); the second sampling pipe (4) is connected to the sampling pool (5) for introducing water in the second cache water tank (2) into the sampling pool (5); the sampling pool (5) is connected to a water quality detection instrument (10).

5. The device for monitoring the quality of treated sewage according to claim 4, characterized in that: The first sampling tube (3) is provided with a first electromagnetic valve (6), and the second sampling tube (4) is provided with a second electromagnetic valve (7).

6. The device for monitoring the quality of treated sewage according to claim 5, characterized in that: The water inlet pipe (11) is provided with a third solenoid valve (8) for controlling the flow of treated sewage into the first cache water tank (1) or the second cache water tank (2).

7. The device for monitoring the quality of treated sewage according to claim 6, characterized in that: The first cache water tank (1) and the second cache water tank (2) are both equipped with liquid level sensors (9).

8. The device for monitoring the quality of treated sewage according to claim 4, characterized in that: The water quality detection instrument (10) is provided with a data transmission module for uploading the detection data to the monitoring platform in real time.

9. The device for monitoring the quality of treated sewage according to claim 4, characterized in that: The first cache water tank (1), the second cache water tank (2) and the sampling pool (5) are all buried in the ground, and the upper ends of the first cache water tank (1) and the second cache water tank (2) are covered with a ground cover.

10. The device for monitoring the quality of treated sewage according to claim 4, characterized in that: The first cache water tank (1), the second cache water tank (2) and the sampling pool (5) are all provided with drain pipes, and the drain pipes are all provided with switch valves for controlling the on-off of the drain pipes.

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