Neutralization pool liquid level self-balancing system

Abstract

The liquid level self-balancing system comprises an acid tank, an alkali tank, the neutralizing water tank, a liquid level meter and a PH meter, the acid tank and the alkali tank are respectively connected with the neutralization water tank through an acid feeding pipeline and an alkali feeding pipeline, and an acid adding valve and an alkali adding valve are respectively arranged on the acid feeding pipeline and the alkali feeding pipeline; the liquid level meter is located in the neutralization water tank, the neutralization water tank is connected with the rainwater pipe network through the neutralization pipeline, and the lower end of the neutralization pipeline extends into the neutralization water tank and is provided with a PH meter, a conveying valve and a neutralization water pump; the part, positioned outside the neutralization water tank, of the neutralization pipeline is connected with a return pipeline; the return pipeline provided with a return valve extends into the neutralization water tank; and a discharge valve is arranged on the neutralization pipeline between the backflow pipeline and the rainwater pipe network. The device has the advantages that the PH value of wastewater in the neutralization pool is monitored in real time through the PH meter, the precision is higher, and the labor force is reduced. And the neutralization water pump is adopted to realize circulating reflux of the wastewater through the reflux pipeline, so that the wastewater is mixed with acid / alkali more quickly and more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of clean production, in particular to a neutralization pool liquid level self-balancing system. Background Art

[0002] The desalted water device uses the ion exchange method to prepare the required desalted water, which is mainly used for boiler feed water and other equipment that requires desalted water. Its process flow is: raw water → fiber nano filter → cation bed → decarbonizer → anion bed → refined mixed bed → desalted water tank → external supply.

[0003] After the desalted water is produced, the resins in the anion and cation bed ion exchangers become ineffective and need to be regenerated to restore some of their exchange capacity for reuse. During the resin regeneration process, the cation bed produces acid waste liquid and the anion bed produces alkaline waste liquid. The regenerated waste liquid enters the neutralization water tank. When the operator observes the upper limit of the water level in the neutralization water tank, he manually samples and analyzes the pH of the neutralization water tank. According to the analysis results, acid or alkali is manually added to adjust the pH to 6-9. The neutralized water is pumped to the rainwater pipe network through the neutralization water pump, and is discharged after being treated by the external drainage and defluorination device. The above treatment process has the following problems:

[0004] ① Manual sampling is frequent and changes in pH cannot be observed at any time.

[0005] ② The neutralization pool was not mixed after adding the medicine, and the sampling was not representative.

[0006] ③ Manually observe the pool liquid level and manually start and stop the pump operation, and the discharge volume of the neutralization pool fluctuates greatly, affecting the stable operation of the external water drainage and fluorine removal device. Utility Model Content

[0007] The purpose of the utility model is to provide a neutralization pool liquid level self-balancing system, so as to solve the above-mentioned problems existing in the prior art.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0009] A neutralization pool liquid level self-balancing system comprises an acid tank, an alkali tank, a neutralization pool, a liquid level gauge and a pH meter; the acid tank and the alkali tank are connected to the neutralization pool via an acid delivery pipeline and an alkali delivery pipeline respectively, and the acid delivery pipeline and the alkali delivery pipeline are respectively provided with an acid addition valve and an alkali addition valve; the liquid level gauge is located in the neutralization pool, the neutralization pool is connected to a rainwater pipe network via a neutralization pipe, the lower end of the neutralization pipe extends into the neutralization pool and the end is sequentially provided with a pH meter, a delivery valve and a neutralization water pump from top to bottom; the part of the neutralization pipe located outside the neutralization pool is connected to a reflux pipe, the lower end of the reflux pipe extends into the neutralization pool, and the reflux valve is provided on the reflux pipe; the neutralization pipe between the reflux pipe and the rainwater pipe network is provided with an external discharge valve.

[0010] Preferably, a manual acid adding valve is provided on the acid delivery pipeline, and the manual acid adding valve is located between the acid tank and the acid adding valve.

[0011] Preferably, a manual alkali adding valve is provided on the alkali delivery pipeline, and the manual alkali adding valve is located between the alkali tank and the alkali adding valve.

[0012] Preferably, the neutralization pipeline includes an upper delivery pipeline and a lower delivery pipeline, the upper end of the upper delivery pipeline is connected to the rainwater pipe network, the lower end of the upper delivery pipeline extends into the neutralization pool and is connected to the upper end of the lower delivery pipeline located in the neutralization pool, a pH meter is provided on the portion of the upper delivery pipeline located in the neutralization pool, and a return pipeline is connected to the portion of the upper delivery pipeline located outside the neutralization pool;

[0013] The lower delivery pipeline is provided with delivery valves and neutralizing water pumps in sequence from top to bottom.

[0014] Preferably, the lower delivery pipeline includes a main pipeline and a spare pipeline arranged in parallel; the main pipeline and the spare pipeline are both connected to the lower end of the upper delivery pipeline, and delivery valves and neutralizing water pumps are sequentially arranged on the main pipeline and the spare pipeline from top to bottom.

[0015] Preferably, a controller is also included, and a liquid level meter, an acid addition valve, an alkali addition valve, a pH meter, a delivery valve, a neutralization water pump, a reflux valve and an external discharge valve are all connected to the controller.

[0016] The beneficial effects of the utility model are as follows: 1. The pH value of the wastewater in the neutralization pool is monitored in real time by a pH meter, replacing the manual sampling and analysis in the traditional method, with higher accuracy, more timely response, and labor saving. 2. In the process of adding acid and alkali to the neutralization pool, a neutralization water pump is used to send the wastewater into the reflux pipe to realize the circulation and reflux of the wastewater, thereby achieving a faster and more convenient mixing of the wastewater and the acid / alkali, and realizing a rapid change in the pH value of the wastewater. 3. Each valve and water pump is automatically controlled by a controller to avoid fluctuations in the discharge volume of the neutralization pool or failure to accurately adjust the pH value of the wastewater due to manual operation, which affects the stable operation of the external drainage and defluorination device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the self-balancing system in the embodiment of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figure 1 As shown, in this embodiment, a neutralization water tank liquid level self-balancing system is provided, including an acid tank, an alkali tank, a neutralization water tank, a liquid level gauge, a pH meter and a controller; the acid tank and the alkali tank are connected to the neutralization water tank via an acid delivery pipeline and an alkali delivery pipeline, respectively, and the acid delivery pipeline and the alkali delivery pipeline are respectively provided with an acid addition valve and an alkali addition valve; the liquid level gauge is located in the neutralization water tank, the neutralization water tank is connected to the rainwater pipe network via a neutralization pipe, the lower end of the neutralization pipe extends into the neutralization water tank and the end is sequentially provided with a pH meter, a delivery valve and a neutralization water pump from top to bottom; the part of the neutralization pipe located outside the neutralization water tank is connected to a reflux pipe, the lower end of the reflux pipe extends into the neutralization water tank, and the reflux valve is provided on the reflux pipe; an external discharge valve is provided on the neutralization pipe between the reflux pipe and the rainwater pipe network; the liquid level gauge, the acid addition valve, the alkali addition valve, the pH meter, the delivery valve, the neutralization water pump, the reflux valve and the external discharge valve are all connected to the controller.

[0020] The working process of the self-balancing system is as follows: the liquid level meter L1 monitors the liquid level of the neutralization pool in real time. When the liquid level meter detects that the neutralization pool has reached the upper limit of the liquid level, the controller controls the neutralization pump to start, and the wastewater in the neutralization pool is driven by the neutralization pump through the delivery valve (normally open) to detect the pH value through the pH meter; when the pH meter detects that the pH value of the wastewater in the neutralization pool is greater than 9, the controller controls the acid addition valve F5 to open, and the acid tank adds acid to the neutralization pool to neutralize the wastewater; when the pH meter detects that the pH value of the wastewater in the neutralization pool is less than 6, the controller controls the alkali addition valve F6 to open, and the alkali tank adds alkali to the neutralization pool to neutralize the wastewater. In the process of adjusting the pH value, the external discharge valve F8 is closed, the reflux valve F7 is opened, and the neutralization pump continuously transports the wastewater in the neutralization pool to the reflux pipe, and the wastewater then returns to the neutralization pool through the reflux pipe. This cycle achieves full mixing of the wastewater in the neutralization pool.

[0021] When the pH value of the wastewater is stable at 6-9 for 30 minutes, the controller opens the external discharge valve F8 and closes the return valve F7, so that the wastewater with the pH value that meets the standard is discharged from the neutralization pool to the rainwater pipe network. When the low liquid level interlock is triggered, the controller controls the external discharge valve and the neutralization water pump to close. Through the above process, the regenerated waste liquid in the neutralization pool is stably discharged to the rainwater pipe network, providing favorable conditions for the stable operation of the external drainage defluorination device.

[0022] In this embodiment, a manual acid adding valve is provided on the acid delivery pipeline, and the manual acid adding valve is located between the acid tank and the acid adding valve. A manual alkali adding valve is provided on the alkali delivery pipeline, and the manual alkali adding valve is located between the alkali tank and the alkali adding valve.

[0023] The manual acid adding valve F1 and the manual alkali adding valve F2 are used as backup. When the acid adding valve or the alkali adding valve fails, the manual acid adding valve or the manual alkali adding valve can be used to add acid or alkali to adjust the pH value of the neutralization pool.

[0024] In this embodiment, the neutralization pipe includes an upper delivery pipe and a lower delivery pipe, the upper end of the upper delivery pipe is connected to the rainwater pipe network, the lower end of the upper delivery pipe extends into the neutralization water pool and is connected to the upper end of the lower delivery pipe located in the neutralization water pool, a pH meter is provided on the portion of the upper delivery pipe located in the neutralization water pool, and a return pipe is connected to the portion of the upper delivery pipe located outside the neutralization water pool; a delivery valve and a neutralization water pump are sequentially arranged on the lower delivery pipe from top to bottom.

[0025] Specifically: the lower delivery pipeline includes a main pipeline and a spare pipeline arranged in parallel; the main pipeline and the spare pipeline are both connected to the lower end of the upper delivery pipeline, and delivery valves and neutralizing water pumps are sequentially arranged on the main pipeline and the spare pipeline from top to bottom.

[0026] The delivery valve F3 on the main pipeline and the delivery valve F4 on the standby pipeline are in a normally open state; when in use, the neutralization water pump on the main pipeline can be selected to work. When the neutralization water pump or the delivery valve on the main pipeline fails, the neutralization water pump on the standby pipeline can be selected to open to ensure the normal operation of the system. When it is necessary to quickly change the pH value in the neutralization pool, the main pipeline and the auxiliary pipeline can also work at the same time.

[0027] By adopting the above technical solution disclosed in the utility model, the following beneficial effects are obtained:

[0028] The utility model provides a self-balancing system for the liquid level of a neutralization pool, which monitors the pH value of wastewater in the neutralization pool in real time through a pH meter, replacing the manual sampling and analysis in the traditional method, with higher accuracy, more timely response, and labor saving. In the process of adding acid and alkali to the neutralization pool, a neutralization water pump is used to send the wastewater into a reflux pipe to achieve the circulation and reflux of the wastewater, thereby achieving a faster and more convenient mixing of the wastewater and the acid / alkali, and achieving a rapid change in the pH value of the wastewater. Each valve and water pump is automatically controlled by a controller to avoid fluctuations in the discharge volume of the neutralization pool or failure to accurately adjust the pH value of the wastewater due to manual operation, which affects the stable operation of the external drainage and defluorination device.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A neutralization pool liquid level self-balancing system, characterized by: It includes an acid tank, an alkali tank, a neutralization water tank, a liquid level meter and a pH meter; the acid tank and the alkali tank are connected to the neutralization water tank via an acid delivery pipeline and an alkali delivery pipeline respectively, and the acid delivery pipeline and the alkali delivery pipeline are respectively provided with an acid addition valve and an alkali addition valve; the liquid level meter is located in the neutralization water tank, the neutralization water tank is connected to the rainwater pipe network via a neutralization pipe, the lower end of the neutralization pipe extends into the neutralization water tank and the end is sequentially provided with a pH meter, a delivery valve and a neutralization water pump from top to bottom; the part of the neutralization pipe located outside the neutralization water tank is connected to a reflux pipe, the lower end of the reflux pipe extends into the neutralization water tank, and a reflux valve is provided on the reflux pipe; an external discharge valve is provided on the neutralization pipe between the reflux pipe and the rainwater pipe network.

2. The neutralization pool liquid level self-balancing system according to claim 1 is characterized by: The acid delivery pipeline is provided with a manual acid adding valve, and the manual acid adding valve is located between the acid tank and the acid adding valve.

3. The neutralization pool liquid level self-balancing system according to claim 1 is characterized in that: The alkali delivery pipeline is provided with a manual alkali adding valve, and the manual alkali adding valve is located between the alkali tank and the alkali adding valve.

4. The neutralization pool liquid level self-balancing system according to claim 1 is characterized by: The neutralization pipeline includes an upper delivery pipeline and a lower delivery pipeline, the upper end of the upper delivery pipeline is connected to the rainwater pipe network, the lower end of the upper delivery pipeline extends into the neutralization pool and is connected to the upper end of the lower delivery pipeline located in the neutralization pool, a pH meter is provided on the portion of the upper delivery pipeline located in the neutralization pool, and a return pipeline is connected to the portion of the upper delivery pipeline located outside the neutralization pool; The lower delivery pipeline is provided with delivery valves and neutralizing water pumps in sequence from top to bottom.

5. The neutralization pool liquid level self-balancing system according to claim 4 is characterized in that: The lower delivery pipeline includes a main pipeline and a spare pipeline arranged in parallel; the main pipeline and the spare pipeline are both connected to the lower end of the upper delivery pipeline, and delivery valves and neutralizing water pumps are sequentially arranged on the main pipeline and the spare pipeline from top to bottom.

6. The neutralization pool liquid level self-balancing system according to claim 1, characterized in that: It also includes a controller, and a liquid level meter, an acid addition valve, an alkali addition valve, a pH meter, a delivery valve, a neutralization water pump, a reflux valve and an external discharge valve are all connected to the controller.

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