Reclaimed water conveying system

Abstract

The utility model discloses a reclaimed water conveying system which is characterized in that an auxiliary water pump and an auxiliary water pipe are additionally arranged on the basis that a dual-use and one-standby operation mode is adopted to convey reclaimed water at present, and a main switching valve and an auxiliary switching valve are respectively arranged at positions, close to a water ejector, on a main water pipe and the auxiliary water pipe, so that the reclaimed water conveying mode is switched as required; under normal conditions, a dual-use and one-standby operation mode is still adopted, and when the water pressure is low and the requirements of the water ejector are difficult to meet, the auxiliary water pump is started to independently convey reclaimed water to the disinfection tank, so that the problem of insufficient water pressure of the water ejector for the disinfection tank at present is solved, and on the premise of ensuring stable operation of the disinfection tank, water pressure waste is avoided; the energy consumption of the water pump house cannot be greatly increased, and the stability of reclaimed water conveying can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a reclaimed water conveying system. Background Art

[0002] Recycled water reuse refers to the process of using domestic sewage that has been treated by a sewage treatment plant to meet the standards for miscellaneous water for non-drinking purposes. Sewage treatment plants generally use recycled water pumps located in the pump room to transport recycled water through water pipes to some water-using parts within the plant, such as filtration pools, disinfection pools, vegetation water supply points, cleaning water supply points, and toilet water supply points. The disinfection pool uses recycled water by installing a water ejector on the water pipe. The suction port of the water ejector is connected to a chlorine dioxide generator. When recycled water with a certain pressure passes through the water ejector, a negative pressure is generated at the suction port of the water ejector, and the chlorine dioxide produced by the chlorine dioxide generator is sucked into the water ejector, and then enters the disinfection pool with the recycled water to disinfect and sterilize the sewage in the pool, remove pollutants, and inhibit the growth of algae.

[0003] At present, the pump room of a sewage treatment plant is generally equipped with two grey water pumps, one for normal use and the other as a backup. However, since the grey water pump supplies a large number of water users, the water pressure is low when multiple water users are used at the same time, and the negative pressure generated at the suction port of the water ejector is insufficient, which can easily lead to abnormal conditions such as insufficient chlorine dioxide addition to the disinfection pool and overflow inside the chlorine dioxide generator due to backflow from the water ejector. The applicant now has three grey water pumps connected in parallel in the pump room, using a two-in-one-backup operation mode for grey water transportation. However, after trial use, it was found that the water pressure of the water ejector is still occasionally insufficient. If the number of grey water pumps in normal use continues to be increased, not only will there be a waste of water pressure most of the time, resulting in a significant increase in energy consumption in the pump room, but the water facilities will also be easily damaged or damaged due to excessive water pressure.

[0004] Therefore, it is necessary to design a stable, reliable and energy-saving grey water delivery system to meet the grey water usage needs of water ejectors and many water-using departments. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a grey water delivery system to solve the technical problem of insufficient water pressure in the water ejectors used in the current disinfection pool, thereby improving the reliability of grey water delivery and ensuring the stable operation of the disinfection pool.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A reclaimed water delivery system comprises a main water pipe, a secondary water pipe, a main water pump and a secondary water pump, wherein the water inlet end of the main water pipe is connected with the water outlet end of the main water pump, and the water outlet end of the main water pipe is respectively connected with a disinfection tank and other water-using parts, a main switching valve and a water ejector are provided on the main water pipe near the disinfection tank, the water ejector is located between the main switching valve and the disinfection tank, and the suction port of the water ejector is connected with a chlorine dioxide generator; the water inlet end of the secondary water pipe is connected with the water outlet end of the secondary water pump, and the water outlet end of the secondary water pipe is connected with the main water pipe and the connection point is located between the main switching valve and the water ejector, and a secondary switching valve is provided on the secondary water pipe near the connection point.

[0008] Furthermore, a main water pressure gauge is provided on the main water pipe near the main switching valve, and the main water pressure gauge is located on a side of the main switching valve away from the water ejector.

[0009] Furthermore, the reclaimed water delivery system also includes a controller, which is electrically connected to the auxiliary water pump, the main water pressure gauge, the main switching valve and the auxiliary switching valve respectively.

[0010] Furthermore, the grey water delivery system also includes a backup pump, the water outlet end of the backup pump is respectively connected to the water inlet ends of the main water pipe and the secondary water pipe, main valves are respectively provided on the main water pipe near the water outlet ends of the main water pump and the backup pump, and secondary valves are respectively provided on the secondary water pipe near the water outlet ends of the secondary water pump and the backup pump.

[0011] Furthermore, the water outlets of the main water pump, the auxiliary water pump and the standby pump are respectively provided with branch water pressure gauges.

[0012] Furthermore, a main water pressure gauge is provided on the main water pipe near the main switching valve, and the main water pressure gauge is located on the side of the main switching valve away from the water ejector; the reclaimed water delivery system also includes a controller, which is electrically connected to the main water pump, the auxiliary water pump, the standby pump, the main water pressure gauge, the main switching valve, the auxiliary switching valve, each main valve, each auxiliary valve and each branch water pressure gauge.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The grey water delivery system of the utility model, on the basis of the current two-for-one-standby operation mode for grey water delivery, adds an auxiliary water pump and an auxiliary water pipe, and respectively sets a main switching valve and an auxiliary switching valve on the main water pipe and the auxiliary water pipe near the water ejector, so as to realize the switching of the grey water delivery mode on demand; under normal circumstances, the two-for-one-standby operation mode is still adopted. When the water pressure is too low to meet the requirements of the water ejector, the auxiliary water pump is started to deliver grey water to the disinfection pool alone, thereby solving the problem of insufficient water pressure of the water ejector in the disinfection pool. Under the premise of ensuring the stable operation of the disinfection pool, it will neither cause water pressure waste nor lead to a large increase in energy consumption in the pump room, which is beneficial to improving the stability of grey water delivery.

[0015] 2. The reclaimed water delivery system described in the utility model adopts a controller to replace manual frequent checking of the main water pressure gauge and opening and closing of the main switching valve and the auxiliary switching valve. A standard main water pressure is preset in the controller. When the water pressure measured by the main water pressure gauge received by the controller is less than the standard main water pressure, the controller controls the main switching valve to close, the auxiliary switching valve to open, and the auxiliary water pump to start. When the water pressure measured by the main water pressure gauge received by the controller is greater than or equal to the standard main water pressure, the controller controls the main switching valve to open, the auxiliary switching valve to close, and the auxiliary water pump to stop.

[0016] 3. In the grey water delivery system of the utility model, when the water pressure of the main water pipe is low and the disinfection pool needs to be supplied with water independently through the auxiliary water pipe, and the auxiliary water pump fails, the first auxiliary valve can be closed and the second auxiliary valve can be opened to allow the standby pump to replace the auxiliary water pump to deliver grey water to the disinfection pool through the auxiliary water pipe; the standby pump can be used as a backup for the first main water pump and the second main water pump, and also as a backup for the auxiliary water pump, which can effectively improve the stability of the grey water delivery system and reduce its cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the reclaimed water delivery system described in the embodiment;

[0018] Figure 2 This is a control schematic diagram of the reclaimed water delivery system described in the embodiment;

[0019] Among them, there are a pump room 1, a first main water pump 11, a second main water pump 12, a standby pump 13, an auxiliary water pump 14, a main water pipe 21, an auxiliary water pipe 22, a first main valve 31, a second main valve 32, a third main valve 33, a first auxiliary valve 34, a second auxiliary valve 35, a main switching valve 36, an auxiliary switching valve 37, a disinfection pool 4, a filter pool 5, other water use parts 6, a chlorine dioxide generator 71, a water ejector 72, a first branch water pressure gauge 81, a second branch water pressure gauge 82, a third branch water pressure gauge 83, a fourth branch water pressure gauge 84, and a main water pressure gauge 85. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0021] Example:

[0022] See also Figure 1A reclaimed water delivery system includes a main water pump, a standby pump 13 and a main water pipe 21. There are two main water pumps, namely a first main water pump 11 and a second main water pump 12, so as to adopt a two-for-one-standby operation mode to deliver reclaimed water. The reclaimed water delivery system also includes an auxiliary water pump 14 and an auxiliary water pipe 22. The first main water pump 11, the second main water pump 12, the standby pump 13 and the auxiliary water pump 14 are all arranged in a pump room 1. The first main water pump 11, the second main water pump 12, the standby pump 13 and the auxiliary water pump 14 are all arranged in a pump room 1. The water inlet ends of the pump 13 and the auxiliary water pump 14 are respectively connected to the reclaimed water discharge point in the sewage treatment plant; the water inlet end of the main water pipe 21 is respectively connected to the water outlet ends of the first main water pump 11, the second main water pump 12 and the standby pump 13, and the main water pipe 21 is respectively provided with a first main valve 31, a second main valve 32 and a third main valve 33 near the water outlet ends of the first main water pump 11, the second main water pump 12 and the standby pump 13, so as to When a fault occurs, the third main valve 33 is opened to switch the standby pump 13 to connect with the main water pipe 21, and the first main valve 31 or the second main valve 32 is closed to switch the first main water pump 11 or the second main water pump 12 to disconnect from the main water pipe 21 to prevent backflow; the outlet end of the main water pipe 21 is respectively connected with the disinfection pool 4, the filter pool 5 and multiple other water use parts 6, and the other water use parts 6 can be vegetation water supply points, cleaning water supply points and toilet water supply points, etc. A main switching valve 36 and a water ejector 72 are provided on the main water pipe 21 near the disinfection pool 4. The water ejector 72 is located between the main switching valve 36 and the disinfection pool 4, and the suction port of the water ejector 72 is connected to the chlorine dioxide generator 71; the water inlet end of the auxiliary water pipe 22 is connected with the water outlet end of the auxiliary water pump 14, and the water outlet end of the auxiliary water pipe 22 is connected with the main water pipe 21 and the connection point is located between the main switching valve 36 and the water ejector 72, and an auxiliary switching valve 37 is provided on the auxiliary water pipe 22 near the connection point.

[0023] In the grey water delivery system of the present invention, under normal circumstances, the auxiliary water pump 14 is not started, the auxiliary switching valve 37 is closed, the main switching valve 36 is opened, and the first main water pump 11 and the second main water pump 12 deliver grey water to the filter tank 5, the disinfection tank 4 and other water-using parts 6 through the main water pipe 21; when multiple other water-using parts 6 use water at the same time, resulting in a low water pressure in the main water pipe 21, which is difficult to meet the water pressure requirement of the water injector 72, the main switching valve 36 is closed, the auxiliary switching valve 37 is opened and the auxiliary water pump 14 is started, the first main water pump 11 and the second main water pump 12 continue to deliver grey water to the filter tank 5 and other water-using parts 6 through the main water pipe 21 to meet other water needs, and the auxiliary water pump 14 delivers grey water to the disinfection tank 4 alone through the auxiliary water pipe 22, thereby meeting the water pressure requirement of the water injector 72, so that the water injector 72 can normally absorb the chlorine dioxide generated by the chlorine dioxide generator 71 into itself, and then enter the disinfection tank 4 with the grey water.

[0024] The grey water delivery system of the present invention, on the basis of the current two-for-one-standby operation mode for grey water delivery, adds an auxiliary water pump 14 and an auxiliary water pipe 22, and respectively sets a main switching valve 36 and an auxiliary switching valve 37 on the main water pipe 21 and the auxiliary water pipe 22 near the water ejector 72 to realize on-demand switching of the grey water delivery mode; under normal circumstances, the two-for-one-standby operation mode is still adopted. When the water pressure is low and cannot meet the requirements of the water ejector 72, the auxiliary water pump 14 is started to deliver grey water to the disinfection pool 4 alone, thereby solving the problem of insufficient water pressure of the disinfection pool 4 using the water ejector 72. Under the premise of ensuring the stable operation of the disinfection pool 4, it will neither cause water pressure waste nor lead to a large increase in energy consumption of the pump room 1, which is beneficial to improving the stability of grey water delivery.

[0025] See also Figure 1 A main water pressure gauge 85 is provided on the main water pipe 21 near the main switching valve 36, and the main water pressure gauge 85 is located on the side of the main switching valve 36 away from the water ejector 72; in this way, the water pressure near the water ejector 72 in the main water pipe 21 can be grasped in real time through the main water pressure gauge 85, so as to switch the reclaimed water delivery mode in time by opening and closing the main switching valve 36 and the auxiliary switching valve 37, so as to reduce energy consumption and water pressure waste while ensuring the stable operation of the disinfection pool 4.

[0026] See also Figure 1 and Figure 2 , and also includes a controller, which is electrically connected to the auxiliary water pump 14, the main water pressure gauge 85, the main switching valve 36 and the auxiliary switching valve 37 respectively; in this way, the controller is used instead of manually frequently checking the main water pressure gauge 85 and opening and closing the main switching valve 36 and the auxiliary switching valve 37, and a standard main water pressure is preset in the controller. When the water pressure measured by the main water pressure gauge 85 received by the controller is less than the standard main water pressure, the controller controls the main switching valve 36 to close, the auxiliary switching valve 37 to open, and the auxiliary water pump 14 to start. When the water pressure measured by the main water pressure gauge 85 received by the controller is greater than or equal to the standard main water pressure, the controller controls the main switching valve 36 to open, the auxiliary switching valve 37 to close, and the auxiliary water pump 14 to stop.

[0027] See also Figure 1 The water outlet of the standby pump 13 is also connected to the water inlet of the auxiliary water pipe 22, and the water outlets of the auxiliary water pipe 22 near the auxiliary water pump 14 and the standby pump 13 are respectively provided with a first auxiliary valve 34 and a second auxiliary valve 35; in this way, when the water pressure of the main water pipe 21 is low, the disinfection pool 4 needs to be independently supplied with water through the auxiliary water pipe 22, and the auxiliary water pump 14 fails, the first auxiliary valve 34 can be closed and the second auxiliary valve 35 can be opened to allow the standby pump 13 to replace the auxiliary water pump 14 to transport the recycled water to the disinfection pool 4 through the auxiliary water pipe 22; the standby pump 13 is used as a backup for the first main water pump 11 and the second main water pump 12, and also as a backup for the auxiliary water pump 14, which can effectively improve the stability of the recycled water transportation system and reduce its cost.

[0028] See also Figure 1 The water outlet ends of the first main water pump 11, the second main water pump 12, the auxiliary water pump 14 and the standby pump 13 are respectively provided with a first branch water pressure gauge 81, a second branch water pressure gauge 82, a third branch water pressure gauge 83 and a fourth branch water pressure gauge 84; in this way, the outlet water pressures of the first main water pump 11, the second main water pump 12 and the auxiliary water pump 14 can be grasped through each branch water pressure gauge, so as to detect faults in time and switch the standby pump 13 to ensure the stability of the reclaimed water transportation.

[0029] See also Figure 1 and Figure 2 A main water pressure gauge 85 is provided on the main water pipe 21 near the main switching valve 36, and the main water pressure gauge 85 is located on the side of the main switching valve 36 away from the water ejector 72; it also includes a controller, and the controller is electrically connected to the main water pump, the auxiliary water pump 14, the standby pump 13, the main water pressure gauge 85, the main switching valve 36, the auxiliary switching valve 37, each main valve, each auxiliary valve and each branch water pressure gauge; in this way, a water pump water pressure value can be preset in the controller, and the controller automatically determines the faulty water pump according to the outlet water pressure values ​​of each water pump measured by each branch water pressure gauge, and allows the standby pump 13 to replace the faulty water pump by switching the main valve or the auxiliary valve.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A reclaimed water delivery system, characterized in that: It includes a main water pipe, a secondary water pipe, a main water pump and a secondary water pump. The water inlet end of the main water pipe is connected with the water outlet end of the main water pump, and the water outlet end of the main water pipe is respectively connected with the disinfection tank and the water use part. A main switching valve and a water ejector are provided on the main water pipe near the disinfection tank. The water ejector is located between the main switching valve and the disinfection tank, and the suction port of the water ejector is connected with a chlorine dioxide generator; the water inlet end of the secondary water pipe is connected with the water outlet end of the secondary water pump, and the water outlet end of the secondary water pipe is connected with the main water pipe and the connecting point is located between the main switching valve and the water ejector. A secondary switching valve is provided on the secondary water pipe near the connecting point.

2. A reclaimed water delivery system according to claim 1, characterized in that: A main water pressure gauge is provided on the main water pipe near the main switching valve. The main water pressure gauge is located on the side of the main switching valve away from the water ejector.

3. A reclaimed water delivery system according to claim 2, characterized in that: It also includes a controller, which is electrically connected to the auxiliary water pump, the main water pressure gauge, the main switching valve and the auxiliary switching valve respectively.

4. A reclaimed water delivery system according to claim 1, characterized in that: It also includes a backup pump, the water outlet of the backup pump is connected to the water inlet of the main water pipe and the auxiliary water pipe respectively, main valves are respectively provided on the main water pipe near the water outlet of the main water pump and the backup pump, and auxiliary valves are respectively provided on the auxiliary water pipe near the water outlet of the auxiliary water pump and the backup pump.

5. A reclaimed water delivery system according to claim 4, characterized in that: Branch water pressure gauges are provided at the water outlets of the main water pump, auxiliary water pump and standby pump.

6. A reclaimed water delivery system according to claim 5, characterized in that: A main water pressure gauge is provided on the main water pipe near the main switching valve, and the main water pressure gauge is located on the side of the main switching valve away from the water ejector; the main water pipe also includes a controller, which is electrically connected to the main water pump, the auxiliary water pump, the standby pump, the main water pressure gauge, the main switching valve, the auxiliary switching valve, each main valve, each auxiliary valve and each branch water pressure gauge.

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