Sewage treatment distribution system

Abstract

The utility model discloses a sewage treatment distribution system which comprises a sewage main pipe, the sewage main pipe is respectively connected with a circulating tower water tank and a sewage treatment pipe, and the other end of the sewage treatment pipe is respectively connected with a strong brine tank and a water inlet of a sewage discharge tank. The water outlet of the circulating tower water tank is also connected with the water inlets of the strong brine tank and the sewage discharge tank; butterfly valves are arranged on a water inlet of the circulating tower pool and the sewage treatment pipe, a water outlet main valve is arranged at a water outlet of the circulating tower pool, and a water tank water inlet valve and a discharge pool water inlet valve are respectively arranged at water inlets of the strong brine tank and the sewage discharge pool; and a water tank liquid level meter and a discharge tank liquid level meter are respectively arranged in the strong brine tank and the sewage discharge tank. Sewage in the sewage main pipe is fed into the circulating tower water tank, is cooled by the circulating tower and then is respectively fed into the strong brine tank and the sewage discharge tank, so that the temperature of the sewage is reduced, and subsequent sewage treatment is facilitated.

Description

Technical field:

[0001] The utility model relates to the field of sewage treatment, in particular to a sewage treatment distribution system. Background technology:

[0002] A large amount of wastewater is generated in the production of nitrogen fertilizers. When it is treated, it needs to be collected through the sewage main pipe and then sent to the circulating tower pool, the brine tank and the sewage discharge pool according to the sewage treatment needs. The sewage in the circulating tower pool is cooled by the circulating tower, which is a necessary condition for the subsequent treatment of the sewage; the sewage in the brine tank is mainly sent to the membrane treatment system and the resin ion exchange treatment system for treatment; the sewage in the sewage discharge pool is mainly treated by biological methods.

[0003] At present, during production, the sewage from the sewage main is mainly divided into two routes, one is directly sent to the circulating tower pool, and the other is sent to the brine tank and sewage discharge pool. Affected by the amount of sewage treated, the sewage stays in the brine tank and sewage discharge pool for a long time in the actual production process, so the temperature will also drop over time, so generally there is no need for a circulating tower to cool down. However, in actual production, due to the process and equipment upgrades of the membrane treatment system, resin ion exchange treatment system, and biological treatment system, the sewage treatment volume has increased, so the retention time of sewage in the brine tank and sewage discharge pool has decreased, resulting in a higher temperature of the sewage sent to the membrane treatment system, resin ion exchange treatment system, and biological treatment system, which cannot meet the temperature requirements of sewage treatment, seriously affecting the normal operation of the above systems. Utility model content:

[0004] The purpose of the utility model is to provide a sewage treatment distribution system.

[0005] The utility model is implemented by the following technical solutions:

[0006] A sewage treatment distribution system comprises a sewage main pipe, wherein the sewage main pipe is connected to a circulation tower water tank and a sewage treatment pipe respectively, the other end of the sewage treatment pipe is connected to the water inlet of a concentrated brine tank and a sewage discharge tank respectively, and the water outlet of the circulation tower water tank is also connected to the water inlet of the concentrated brine tank and the sewage discharge tank; butterfly valves are installed on the water inlet of the circulation tower water tank and the sewage treatment pipe, a water outlet main valve is installed at the water outlet of the circulation tower water tank, a water tank inlet valve and a discharge tank inlet valve are installed at the water inlets of the concentrated brine tank and the sewage discharge tank respectively, and a water tank level gauge and a discharge tank level gauge are installed in the concentrated brine tank and the sewage discharge tank respectively; the signal output ends of the water tank level gauge and the discharge tank level gauge are electrically connected to the signal input end of a controller respectively, and the signal input ends of the water outlet main valve, the water tank inlet valve and the discharge tank inlet valve are electrically connected to the signal input end of the controller respectively.

[0007] Preferably, the circulating tower water pool includes a pre-cooling water pool and a post-cooling water pool, the post-cooling water pool is connected to the water inlet of the circulating tower, and the post-cooling water pool is connected to the water outlet of the circulating tower.

[0008] Preferably, a shower valve is connected to the water outlet side of the butterfly valve on the sewage treatment pipe.

[0009] The utility model has the following advantages: the sewage in the sewage main pipe is sent to the water pool of the circulation tower, and after being cooled by the circulation tower, it is sent to the concentrated brine water tank and the sewage discharge pool respectively to reduce the sewage temperature and facilitate subsequent sewage treatment; and the liquid levels of the concentrated brine water tank and the sewage discharge pool are respectively detected by the water tank level gauge and the discharge pool level gauge, and the controller is used to control the opening of the water tank inlet valve and the discharge pool inlet valve, thereby adjusting the amount of sewage sent to the concentrated brine water tank and the sewage discharge pool to ensure that the sewage supply can meet the needs of the sewage treatment system. Description of the drawings:

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a schematic diagram of a control circuit of the utility model.

[0012] In the figure: sewage main pipe 1, circulating tower water pool 2, pre-cooling water pool 2.1, post-cooling water pool 2.2, sewage treatment pipe 3, brine tank 4, sewage discharge pool 5, butterfly valve 6, outlet main valve 7, water tank inlet valve 8, discharge pool inlet valve 9, water tank level gauge 10, discharge pool level gauge 11, controller 12, circulating tower 13, shower valve 14. Specific implementation method:

[0013] like Figure 1 and Figure 2 As shown, a sewage treatment distribution system comprises a sewage main pipe 1, which is connected to a circulating tower pool 2 and a sewage treatment pipe 3 respectively, the other end of the sewage treatment pipe 3 is connected to the water inlet of a concentrated brine tank 4 and a sewage discharge pool 5 respectively, and the water outlet of the circulating tower pool 2 is also connected to the water inlet of the concentrated brine tank 4 and the sewage discharge pool 5; butterfly valves 6 are installed on the water inlet of the circulating tower pool 2 and the sewage treatment pipe 3, and a water outlet main valve 7 is installed on the water outlet of the circulating tower pool 2. The water inlets of the salt water tank 4 and the sewage discharge pool 5 are respectively installed with a water tank inlet valve 8 and a discharge pool inlet valve 9, and the concentrated salt water tank 4 and the sewage discharge pool 5 are respectively installed with a water tank level gauge 10 and a discharge pool level gauge 11; the signal output ends of the water tank level gauge 10 and the discharge pool level gauge 11 are respectively electrically connected to the signal input end of the controller 12, and the signal input ends of the water outlet main valve 7, the water tank inlet valve 8 and the discharge pool inlet valve 9 are respectively electrically connected to the signal input end of the controller 12;

[0014] During normal use, the butterfly valve 6 at the water inlet of the circulating tower pool 2 is opened, the butterfly valve 6 on the sewage treatment pipe 3 is closed, and the sewage in the sewage main pipe 1 is sent to the circulating tower pool 2, and after being cooled by the circulating tower 13, it is sent to the concentrated brine tank 4 and the sewage discharge pool 5 respectively to reduce the sewage temperature and facilitate subsequent sewage treatment;

[0015] The water tank level gauge 10 and the discharge tank level gauge 11 are used to detect the liquid levels of the sewage in the concentrated brine tank 4 and the sewage discharge tank 5, respectively. The water tank level gauge 10 and the discharge tank level gauge 11 are both provided with two liquid level detection points, which are the highest liquid level and the lowest liquid level, respectively. The following is an explanation based on actual use conditions:

[0016] When the water tank level gauge 10 and the discharge tank level gauge 11 both reach the lowest level, in order to ensure that the sewage discharge from the circulating tower water tank 2 can meet the subsequent treatment requirements, the controller 12 receives the signals from the water tank level gauge 10 and the discharge tank level gauge 11, controls the water tank inlet valve 8 and the discharge tank inlet valve 9 to be 100% open, and controls the outlet main valve 7 to be 100% open;

[0017] When the water tank inlet valve 8 and the discharge pool inlet valve 9 are both 100% open to discharge sewage, when the liquid level of either the water tank level gauge 10 or the discharge pool level gauge 11 reaches the highest liquid level, taking the water tank level gauge 10 reaching the lowest liquid level device as an example, after the controller 12 receives the signal of the water tank level gauge 10, the water tank inlet valve 8 is controlled to be adjusted to 50% open, and the discharge pool inlet valve 9 continues to discharge sewage at 100% open, and the outlet main valve 7 is controlled to be 75% open; if the liquid level measured by the discharge pool level gauge 11 reaches the highest liquid level first, the discharge pool inlet valve 9 is adjusted to 50% open, and the rest of the process is the same as the above content;

[0018] When the water tank level gauge 10 and the discharge pool level gauge 11 both reach the highest level, in order to ensure that the sewage discharge from the circulating tower pool 2 does not overflow, the controller 12 receives the signals from the water tank level gauge 10 and the discharge pool level gauge 11, controls the water tank inlet valve 8 and the discharge pool inlet valve 9 to be 50% open, and controls the outlet main valve 7 to be 50% open;

[0019] The circulating tower water pool 2 includes a pre-cooling water pool 2.1 and a post-cooling water pool 2.2. The post-cooling water pool 2.2 is connected to the water inlet of the circulating tower 13, and the post-cooling water pool 2.2 is connected to the water outlet of the circulating tower 13. After the outlet main valve 7 is adjusted to 50% opening, the pre-cooling water pool 2.1 and the post-cooling water pool 2.2 will be connected, and part of the sewage in the post-cooling water pool 2.2 will overflow into the pre-cooling water pool 2.1, realizing circulation in the circulating tower water pool 2.

[0020] In the cold winter season, in order to prevent the sewage from freezing in the pipe, and taking into account, the butterfly valve 6 at the water inlet of the circulating tower water pool 2 is closed, the butterfly valve 6 on the sewage treatment pipe 3 is opened, and the sewage in the sewage main pipe 1 is directly sent to the brine tank 4 and the sewage discharge pool 5, and the sewage does not pass through the circulating tower 13 for cooling; at the same time, the relevant control of the water outlet main valve 7 is removed, and the water tank inlet valve 8 and the discharge pool inlet valve 9 are directly controlled by the water tank level gauge 10 and the discharge pool level gauge 11 respectively.

[0021] The outlet side of the butterfly valve 6 on the sewage treatment pipe 3 is connected with a drain valve 14, which is used to discharge the residual sewage in the pipeline during maintenance after a failure to prevent the sewage from corroding the pipeline or freezing.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage treatment distribution system, characterized in that: It comprises a sewage main pipe, which is respectively connected to a circulation tower water tank and a sewage treatment pipe, the other end of the sewage treatment pipe is respectively connected to the water inlet of a concentrated brine tank and a sewage discharge tank, and the water outlet of the circulation tower water tank is also connected to the water inlet of the concentrated brine tank and the sewage discharge tank; butterfly valves are installed on the water inlet of the circulation tower water tank and the sewage treatment pipe, a water outlet main valve is installed at the water outlet of the circulation tower water tank, a water tank inlet valve and a discharge tank inlet valve are respectively installed at the water inlets of the concentrated brine tank and the sewage discharge tank, a water tank level gauge and a discharge tank level gauge are respectively installed in the concentrated brine tank and the sewage discharge tank; the signal output ends of the water tank level gauge and the discharge tank level gauge are respectively electrically connected to the signal input end of a controller, and the signal input ends of the water outlet main valve, the water tank inlet valve and the discharge tank inlet valve are respectively electrically connected to the signal input end of the controller.

2. A sewage treatment distribution system according to claim 1, characterized in that: The circulating tower water pool comprises a pre-cooling water pool and a post-cooling water pool, wherein the post-cooling water pool is connected to the water inlet of the circulating tower, and the post-cooling water pool is connected to the water outlet of the circulating tower.

3. A sewage treatment distribution system according to claim 1 or 2, characterized in that: A shower valve is connected to the water outlet side of the butterfly valve on the sewage treatment pipe.

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