CN212818327U - Sludge discharge system of primary sedimentation tank - Google Patents
Sludge discharge system of primary sedimentation tank Download PDFInfo
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- CN212818327U CN212818327U CN202020749410.7U CN202020749410U CN212818327U CN 212818327 U CN212818327 U CN 212818327U CN 202020749410 U CN202020749410 U CN 202020749410U CN 212818327 U CN212818327 U CN 212818327U
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Abstract
The utility model belongs to the technical field of sewage treatment, a just sink pond mud discharging system is related to. The system comprises a primary sedimentation tank (1), a sludge storage tank (2), a pipeline (X), an electric valve (F), a sludge pump (4), a sludge concentration meter (5) and a control system (6); a pipeline (X) is communicated with the primary sedimentation tank (1) and the sludge storage tank (2); the electric valve (F), the sludge pump (4) and the sludge concentration meter (5) are all arranged on the pipeline (X); the sludge concentration meter (5) is used for monitoring the sludge concentration in the pipeline (X); the control system (6) is used for receiving a signal of the sludge concentration meter (5), comparing the signal of the sludge concentration meter (5) with a preset sludge concentration, and controlling the opening and closing of the electric valve (F) and the sludge discharge pump (4) according to a comparison result or a sludge discharge period of the primary sedimentation tank (1). The utility model provides a just sink pond sludge discharge system can realize accurate control to just sinking the emission of interior mud of pond.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, more specifically relates to a just sink pond mud discharging system.
Background
The sludge discharge system of the primary sedimentation tank is a key system for maintaining the balance of a sewage treatment system and is closely related to the effective biomass in the biological nitrogen and phosphorus removal process. If the sludge is not discharged in time, the sludge level of the primary sedimentation tank is high, a large amount of suspended matters flow to the aeration tank, so that the operation of the aeration tank is unstable, and the consumption and energy loss of carbon sources or phosphorus removal agents are increased; if the sludge discharge of the primary sedimentation tank is too frequent, the primary sedimentation tank can be caused to settle and degrade more organic matters, the carbon source in the sewage is greatly reduced, and the carbon source required for the denitrification and dephosphorization of the microorganisms is difficult to be provided. The primary sedimentation tank is a link between sewage treatment and sludge treatment, and the large fluctuation of the primary sedimentation sludge concentration can cause the waste of the medicament in the sludge dewatering link, thereby reducing the sludge dewatering efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a just sink pond mud discharging system, accurate control just sink pond mud discharging.
In order to achieve the purpose, the utility model provides a sludge discharge system of a primary sedimentation tank, which comprises a primary sedimentation tank, a sludge storage tank, a pipeline, an electric valve, a sludge discharge pump, a sludge concentration meter and a control system;
the pipeline is communicated with the primary sedimentation tank and the sludge storage tank;
the electric valve, the sludge pump and the sludge concentration meter are all arranged on the pipeline;
the sludge concentration meter is used for monitoring the sludge concentration in the pipeline;
the control system is used for receiving the signal of the sludge concentration meter, comparing the signal of the sludge concentration meter with a preset sludge concentration, and controlling the electric valve and the sludge discharge pump to be opened and closed according to a comparison result or a sludge discharge period of the primary sedimentation tank.
The technical personnel in the field can be according to the mud output design mud period of just sinking the pond and predetermine sludge concentration, the utility model discloses do not specifically limit to mud period and predetermine sludge concentration. The mud discharging period can be 30-120 min. The preset sludge concentration can be 15000-25000 mg/L.
In a preferred embodiment of the present invention, the control system includes:
the input module is used for inputting the sludge discharge period and the preset sludge concentration of the primary sedimentation tank;
the first control module is used for opening the electric valve and the sludge discharge pump when the running time of a sludge discharge period is reached;
the receiving module is used for receiving the signal of the sludge concentration meter;
the comparison module is used for comparing the signal of the sludge concentration meter with the preset sludge concentration;
and the second control module is used for closing the electric valve and the sludge discharge pump according to the comparison result or the sludge discharge period.
In a preferred embodiment of the present invention, the system may further comprise a sludge crusher disposed on the pipeline; the control system is also used for switching the sludge crusher on and off. The sludge crusher can avoid sludge from blocking the pipeline.
In a more preferred embodiment of the present invention, the system further comprises a sludge crusher disposed on the pipeline;
the first control module is also used for starting the sludge crusher when the running time of a sludge discharge period is reached;
the second control module is also used for closing the sludge crusher according to the comparison result or the time of the sludge discharge period.
In a preferred embodiment of the present invention, the sludge crusher is disposed near the sludge discharge port of the primary sedimentation tank.
In a preferred embodiment of the present invention, the sludge concentration meter is communicated with an outlet end of the sludge pump.
The utility model discloses an among the sediment outflow system of just sinking the pond, just sinking the pond and can include two and more than two just sink the pond, every just sinks the pond and corresponds its mud of motorised valve control and discharge, realizes the sediment outflow in multiunit just sinking the pond. Only two primary sedimentation tanks are taken as an example for explanation. Specifically, the primary sedimentation tank comprises a first primary sedimentation tank and a second primary sedimentation tank;
the sludge discharge pump comprises a first sludge discharge pump and a second sludge discharge pump; the first sludge discharge pump and the second sludge discharge pump are respectively communicated with the first primary sedimentation tank and the second primary sedimentation tank;
the mud inlet end of the pipeline is provided with a first branch pipeline and a second branch pipeline, wherein the first branch pipeline is communicated with the mud discharge port of the first primary sedimentation tank, and the second branch pipeline is communicated with the mud discharge port of the second primary sedimentation tank;
the electric valve includes a first electric valve and a second electric valve, wherein the first electric valve is provided on the first branch line, and the second electric valve is provided on the second branch line.
The input module is used for inputting the sludge discharge period and the preset sludge concentration of the first primary sedimentation tank and the second primary sedimentation tank under the condition that two primary sedimentation tanks are arranged;
the first control module is used for starting the first electric valve or the second electric valve and the first sludge discharge pump or the second sludge discharge pump when the first primary sedimentation tank or the second primary sedimentation tank reaches the running time of a sludge discharge period;
the comparison module is used for comparing a signal of the sludge concentration meter with a preset sludge concentration of the first primary sedimentation tank or the second primary sedimentation tank;
the second control module is used for closing the first electric valve or the second electric valve and the first dredge pump or the second dredge pump according to the comparison result or the dredge period.
The utility model discloses in, when just sinking pond mud discharging system includes two and more than two just sinking ponds, the mud discharging pump can be two, and two mud discharging pumps can be for parallelly connected, can adopt the mode operation of "one with one and being equipped with" simultaneously. Even one of them sludge discharge pump damages, can not influence just heavy pond row mud system row mud yet, salvagees for equipment and provides sufficient time, ensures just heavy pond row mud system normal operating.
In the above system, a sludge discharge method may be performed, the method comprising the steps of:
when the primary sedimentation tank reaches a sludge discharge period, the control system controls the electric valve and the sludge discharge pump to be opened, and sludge in the primary sedimentation tank flows into the pipeline;
the sludge concentration meter monitors the sludge concentration in the pipeline;
the control system receives a signal of the sludge concentration meter and compares the signal with the preset sludge concentration;
if the signal is greater than the preset sludge concentration, the sludge pump discharges the sludge in the pipeline into the sludge storage tank for storage;
and if the signal is less than or equal to the preset sludge concentration, directly closing the electric valve and the sludge discharge pump.
When the sludge discharge method of the utility model is carried out in the sludge discharge system of the primary sedimentation tank with the sludge crusher, the method comprises the following steps:
when the primary sedimentation tank reaches a sludge discharge period, the control system controls the crusher, the electric valve and the sludge discharge pump to be started, and sludge in the primary sedimentation tank flows into the pipeline;
the sludge concentration meter monitors the sludge concentration in the pipeline;
the control system receives a signal of the sludge concentration meter and compares the signal with the preset sludge concentration;
if the signal is greater than the preset sludge concentration, the sludge pump discharges the sludge in the pipeline into the sludge storage tank for storage;
and if the signal is less than or equal to the preset sludge concentration, directly closing the electric valve, the sludge crusher and the sludge discharge pump.
When the sludge discharge method of the utility model is carried out in the sludge discharge system with two primary sedimentation tanks, the method comprises the following steps:
when the first sludge discharge pump is set to be in a use state and the second sludge discharge pump is set to be in a standby state, the control system controls the first electric valve and the first sludge discharge pump to be opened when the first primary sedimentation tank reaches a sludge discharge period, and sludge in the first primary sedimentation tank flows into the pipeline;
the sludge concentration meter monitors the sludge concentration in the pipeline;
the control system receives a signal of the sludge concentration meter and compares the signal with the preset sludge concentration;
if the signal is greater than the preset sludge concentration, the first sludge pump discharges the sludge in the pipeline into the sludge storage tank for storage, if the signal is less than or equal to the preset sludge concentration or reaches the sludge discharge period of the second primary sedimentation tank, the first electric valve is closed, the sludge discharge of the first primary sedimentation tank is stopped, the second electric valve is opened, and the first sludge pump discharges the sludge in the second primary sedimentation tank into the sludge storage tank through the pipeline for storage;
if the signal is less than or equal to the preset sludge concentration, closing the second electric valve; and if the signal is greater than the preset sludge concentration, the second electric valve is kept in an open state until the signal of the sludge concentration meter is less than or equal to the preset sludge concentration of the second primary sedimentation tank or the sludge discharge period of the first primary sedimentation tank is reached, and the second electric valve is closed to finish one sludge discharge period of the sludge discharge system of the primary sedimentation tank.
The utility model provides a sediment outflow system in preliminary sedimentation tank through addding motorised valve and mud concentration meter, combines the mud concentration meter signal that control system received, compares mud concentration meter signal and predetermines mud concentration in the mud discharge cycle, synthesizes both controls motorised valve and dredge pump are opened and are closed, realize the accurate control of mud discharge in preliminary sedimentation tank, satisfy the production demand, for artifical manual measurement sediment position in preliminary sedimentation tank, frequently manual regulation and control not only saves the cost of labor, saves follow-up dehydration medicament to the mud dehydration use moreover, improves sludge dewatering treatment efficiency.
The utility model provides an among the preliminary sedimentation pond mud discharging system, the motorised valve that adds combines two key element control of control system combination mud concentration and mud discharging cycle with mud concentration meter motorised valve and mud discharging pump open and close, realize the steady operation of preliminary sedimentation pond mud discharging system. The primary sedimentation tank system which operates stably is beneficial to keeping stable sludge level of the primary sedimentation tank and reducing the content of suspended matters in the effluent of the primary sedimentation tank, thereby reducing the aeration rate of an aeration tank, reducing energy consumption and ensuring the quality of the effluent.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 shows a schematic diagram of a sludge discharge system of a primary sedimentation tank provided by the utility model.
Fig. 2 shows a schematic diagram of another primary sedimentation tank sludge discharge system provided by the utility model.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein.
Example 1
The embodiment provides a mud system is arranged to preliminary sedimentation pond, please refer to fig. 1, and fig. 1 shows the utility model provides a schematic diagram of a mud system is arranged to preliminary sedimentation pond. As shown in fig. 1, the primary sedimentation tank sludge discharge system comprises a primary sedimentation tank 1, a sludge storage tank 2, a pipeline X, an electric valve F, a sludge discharge pump 4, a sludge concentration meter 5 and a control system 6; the pipeline X is communicated with the primary sedimentation tank 1 and the sludge storage tank 2; the electric valve F, the sludge pump 4 and the sludge concentration meter 5 are all arranged on the pipeline X; the sludge concentration meter 5 is used for monitoring the sludge concentration in the pipeline X; the control system 6 is used for receiving the signal of the sludge concentration meter 5, comparing the signal of the sludge concentration meter 5 with a preset sludge concentration, and controlling the electric valve F and the sludge pump 4 to be opened and closed according to a comparison result or the sludge discharge period of the primary sedimentation tank 1.
Example 2
The present embodiment provides a sludge discharge system for a primary sedimentation tank, please continue to refer to fig. 1. The sludge discharge system of the primary sedimentation tank comprises a primary sedimentation tank 1, a sludge storage tank 2, a pipeline X, an electric valve F, a sludge discharge pump 4, a sludge concentration meter 5 and a control system 6; the pipeline X is communicated with the primary sedimentation tank 1 and the sludge storage tank 2; the electric valve F, the sludge pump 4 and the sludge concentration meter 5 are all arranged on the pipeline X; the sludge concentration meter 5 is used for monitoring the sludge concentration in the pipeline X.
The control system 6 includes: the input module is used for inputting the sludge discharge period and the preset sludge concentration of the primary sedimentation tank 1; the first control module is used for opening the electric valve F and the sludge pump 4 when the running time of a sludge discharge period is reached; the receiving module is used for receiving the signal of the sludge concentration meter 5; the comparison module is used for comparing the signal of the sludge concentration meter 5 with the preset sludge concentration; and the second control module is used for closing the electric valve F and the sludge discharge pump 4 according to the comparison result or the sludge discharge period.
Example 3
The present embodiment provides a sludge discharge system for a primary sedimentation tank, please continue to refer to fig. 1. The sludge discharge system of the primary sedimentation tank comprises a primary sedimentation tank 1, a sludge storage tank 2, a pipeline X, an electric valve F, a sludge discharge pump 4, a sludge concentration meter 5, a sludge crusher (not shown in figure 1) and a control system 6; the pipeline X is communicated with the primary sedimentation tank 1 and the sludge storage tank 2; the electric valve F, the sludge pump 4 and the sludge concentration meter 5 are all arranged on the pipeline X; the sludge concentration meter 5 is used for monitoring the sludge concentration in the pipeline X.
The control system 6 includes: the input module is used for inputting the sludge discharge period and the preset sludge concentration of the primary sedimentation tank 1; the first control module is used for opening the electric valve F, the sludge crusher and the sludge pump 4 when the primary sedimentation tank 1 reaches the operation time of the sludge discharge period; the receiving module is used for receiving the signal of the sludge concentration meter 5; the comparison module is used for comparing the signal of the sludge concentration meter 5 with the preset sludge concentration; and the second control module is used for closing the electric valve F, the sludge crusher and the sludge pump 4 according to the comparison result or the sludge discharge period.
Example 4
The present embodiment provides a sludge discharge system for a primary sedimentation tank, please refer to fig. 2. Fig. 2 shows a schematic diagram of another primary sedimentation tank sludge discharge system provided by the utility model. As shown in fig. 2, the primary sedimentation tank sludge discharge system includes: the system comprises a first primary sedimentation tank 101, a second primary sedimentation tank 102, a sludge storage tank 2, a pipeline X, a first electric valve F1, a second electric valve F2, a first sludge discharge pump 401, a second sludge discharge pump 402, a sludge concentration meter 5 and a control system 6; the first sludge discharge pump 401 and the second sludge discharge pump 402 are respectively communicated with the first primary sedimentation tank 101 and the second primary sedimentation tank 102; the mud inlet end of the pipeline X is provided with a first branch pipeline X1 and a second branch pipeline X2; the first electric valve F1 is provided on the first branch line X1, and the second electric valve F2 is provided on the second branch line X2.
The control system 6 includes: the device comprises an input module, a first control module, a receiving module, a comparison module and a second control module. The input module is used for inputting the sludge discharge period and the preset sludge concentration of the first primary sedimentation tank 101 and the second primary sedimentation tank 102; the first control module is used for opening the first electric valve F1 or the second electric valve F2 and the first sludge pump 401 or the second sludge pump 402 when the first primary sedimentation tank 101 or the second primary sedimentation tank 102 reaches the running time of a sludge discharge period; the comparison module is used for comparing the signal of the sludge concentration meter 5 with the preset sludge concentration of the first primary sedimentation tank 101 or the second primary sedimentation tank 102; the second control module is configured to close the first electric valve F1 or the second electric valve F2, and the first dredge pump 401 or the second dredge pump 402 according to a comparison result or a dredge period of the first primary sedimentation tank 101 or the second primary sedimentation tank 102.
Example 5
This embodiment provides a method for discharging sludge, please refer to fig. 1. The sludge discharge method comprises the following steps:
A) when the primary sedimentation tank 1 reaches a sludge discharge period, the control system 6 controls the electric valve F and the sludge discharge pump 4 to be opened, and sludge in the primary sedimentation tank 1 flows into the pipeline X.
B) The sludge concentration meter 5 monitors the sludge concentration in the pipeline X.
C) The control system 6 receives the signal of the sludge concentration meter 5 and compares the signal with the preset sludge concentration. If the signal is greater than the preset sludge concentration, the sludge pump 4 discharges the sludge in the pipeline X into the sludge storage tank 2 for storage until the signal is less than or equal to the preset sludge concentration, and the electric valve F and the sludge pump 4 are closed; if the signal is less than or equal to the preset sludge concentration, the electric valve F and the sludge pump 4 are directly closed.
Example 6
This embodiment provides a method for discharging sludge, please refer to fig. 1. The sludge discharge method comprises the following steps:
A) when the primary sedimentation tank 1 reaches a sludge discharge period, a first control module in the control system 6 controls the electric valve F and the sludge discharge pump 4 to be opened, and sludge in the primary sedimentation tank 1 flows into the pipeline X.
B) The sludge concentration meter 5 monitors the sludge concentration in the pipeline X.
C) A receiving module in the control system 6 receives a signal of the sludge concentration meter 5, and a comparing module in the control system 6 compares the signal with the preset sludge concentration. If the signal is greater than the preset sludge concentration, the sludge pump 4 discharges the sludge in the pipeline X into the sludge storage tank 2 for storage until the signal is less than or equal to the preset sludge concentration, and a second control module in the control system 6 closes the electric valve F and the sludge pump 4; if the signal is less than or equal to the preset sludge concentration, a second control module in the control system 6 directly closes the electric valve F and the sludge pump 4.
Example 7
This embodiment provides a method for discharging sludge, please refer to fig. 1. The sludge discharge method comprises the following steps:
A) when the primary sedimentation tank 1 reaches a sludge discharge period, the control system 6 controls the electric valve F, the crusher and the sludge discharge pump 4 to be opened, and sludge in the primary sedimentation tank 1 flows into the pipeline X.
B) The sludge concentration meter 5 monitors the sludge concentration in the pipeline X.
C) The control system 6 receives the signal of the sludge concentration meter 5 and compares the signal with the preset sludge concentration. If the signal is greater than the preset sludge concentration, the sludge pump 4 discharges the sludge in the pipeline X into the sludge storage tank 2 for storage until the signal is less than or equal to the preset sludge concentration, and the electric valve F, the sludge crusher and the sludge pump 4 are closed; if the signal is less than or equal to the preset sludge concentration, the electric valve F, the sludge crusher and the sludge discharge pump 4 are directly closed.
Example 8
The present embodiment provides a method for discharging sludge, please refer to fig. 2. The sludge discharge method comprises the following steps:
when the first dredge pump 401 is in a use state and the second dredge pump 402 is in a standby state,
A) when the first primary sedimentation tank 101 reaches a sludge discharge period, the control system 6 controls the first electric valve F1 and the sludge discharge pump 401 to be opened, and the sludge in the first primary sedimentation tank 101 flows into the pipeline X.
B) The sludge concentration meter 5 monitors the sludge concentration in the pipeline X.
C) The control system 6 receives the signal of the sludge concentration meter 5 and compares the signal with the preset sludge concentration; if the signal is greater than the preset sludge concentration, the first sludge pump 401 discharges the sludge in the pipeline X into the sludge storage tank 2 for storage, and if the signal is less than or equal to the preset sludge concentration or reaches the sludge discharge period of the second primary sedimentation tank 102, the first electric valve F1 is closed, the sludge discharge of the first primary sedimentation tank 101 is stopped, the second electric valve F2 is opened, and the first sludge pump 401 discharges the sludge in the second primary sedimentation tank 102 into the sludge storage tank 2 for storage through the pipeline X; if the signal is less than or equal to the preset sludge concentration, closing the second electric valve F2; if the signal is greater than the preset sludge concentration, the second electric valve F2 keeps an opening state until the signal of the sludge concentration meter 5 is less than or equal to the preset sludge concentration of the second primary sedimentation tank 102 or the sludge discharge period of the first primary sedimentation tank 101 is reached, the second electric valve F2 is closed, and a sludge discharge period of the sludge discharge system of the primary sedimentation tank is completed.
Example 9
This embodiment provides a method for discharging sludge, please refer to fig. 1. The sludge discharge method comprises the following steps:
firstly, the sludge concentration meter is set to display that the signal is normal within the range of 60000mg/L of 5000-. The running time T of the sludge discharge period is 60 min. The preset sludge concentration M is 20000 mg/L.
When the operation time T of the primary sedimentation tank 1 reaching the sludge discharge period is 60min, the control system 6 controls the electric valve F and the sludge discharge pump 4 to be opened, and the sludge in the primary sedimentation tank 1 flows into the pipeline X.
The sludge concentration meter 5 monitors the sludge concentration in the pipeline X to be 28700 mg/L.
The control system 6 receives the signal of the sludge concentration meter 5, compares 28700mg/L with 20000mg/L, determines that 28700mg/L is more than 20000mg/L, and the sludge pump 4 discharges the sludge in the pipeline X into the sludge storage tank 2 for storage.
When discharging sludge for 35min, the sludge concentration in the monitoring pipeline X of the sludge concentration meter 5 is 19000 mg/L.
The control system 6 compares 19000mg/L with 20000mg/L, determines that 19000mg/L <20000mg/L, and controls the electric valve F and the dredge pump 4 to close.
And adding a dehydration medicament PAM into the sludge in the sludge storage tank 2, wherein the dosage rate of the dehydration medicament is 6 per mill.
Comparative example
The primary sedimentation tank sludge discharge system comprises a primary sedimentation tank, a sludge discharge pump, a sludge storage tank and a pipeline; the primary sedimentation tank is communicated with the sludge storage tank through a pipeline, and the sludge discharge pump is arranged on the pipeline. When the mud level of the primary sedimentation tank is higher than the preset mud level, the sludge discharge pump is manually opened, the sludge in the primary sedimentation tank enters the pipeline and then is discharged into the sludge storage tank, and when the mud level of the primary sedimentation tank is lower than the preset mud level, the sludge discharge pump is manually closed.
Adding a dehydration medicament PAM into the sludge in the sludge storage tank, wherein the dosage rate of the dehydration medicament is 9 per mill.
As can be seen from example 9 and the comparative example, the dewatering agent dosing rate of the sludge obtained in example 9 was 6% o, which was lower than 9% o in the comparative example, and the chemical consumption cost was saved by 33.3%.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A sludge discharge system of a primary sedimentation tank is characterized by comprising a primary sedimentation tank (1), a sludge storage tank (2), a pipeline (X), an electric valve (F), a sludge discharge pump (4), a sludge concentration meter (5) and a control system (6);
the pipeline (X) is communicated with the primary sedimentation tank (1) and the sludge storage tank (2);
the electric valve (F), the sludge pump (4) and the sludge concentration meter (5) are all arranged on the pipeline (X);
the sludge concentration meter (5) is used for monitoring the sludge concentration in the pipeline (X);
the control system (6) is used for receiving a signal of the sludge concentration meter (5), comparing the signal of the sludge concentration meter (5) with a preset sludge concentration, and controlling the electric valve (F) and the sludge discharge pump (4) to be opened and closed according to a comparison result or a sludge discharge period of the primary sedimentation tank (1).
2. The system according to claim 1, characterized in that the control system (6) comprises:
the input module is used for inputting the sludge discharge period and the preset sludge concentration of the primary sedimentation tank (1);
a first control module for opening the electric valve (F) and the dredge pump (4) when the running time of the dredge cycle is reached;
the receiving module is used for receiving the signal of the sludge concentration meter (5);
the comparison module is used for comparing the signal of the sludge concentration meter (5) with the preset sludge concentration;
a second control module for closing the electric valve (F) and the dredge pump (4) according to the result of the comparison or the dredge period.
3. The system according to claim 1, characterized in that it further comprises a sludge crusher, which is arranged on said pipeline (X);
the control system (6) is also used for switching the sludge crusher on and off.
4. The system according to claim 2, characterized in that it further comprises a sludge crusher, which is arranged on said pipeline (X);
the first control module is also used for starting the sludge crusher when the primary sedimentation tank (1) reaches the running time of the sludge discharge period;
the second control module is also used for closing the sludge crusher according to the comparison result or the time of the sludge discharge period.
5. A system according to claim 3, characterized in that the sludge crusher is arranged close to the sludge discharge of the primary sedimentation tank (1);
the sludge concentration meter (5) is communicated with the outlet end of the sludge discharge pump (4).
6. A system according to claim 2, wherein the primary sedimentation tank (1) comprises a first primary sedimentation tank (101) and a second primary sedimentation tank (102);
the sludge discharge pump (4) comprises a first sludge discharge pump (401) and a second sludge discharge pump (402); the first sludge discharge pump (401) and the second sludge discharge pump (402) are respectively communicated with the first primary sedimentation tank (101) and the second primary sedimentation tank (102);
the mud inlet end of the pipeline (X) is provided with a first branch pipeline (X1) and a second branch pipeline (X2), wherein the first branch pipeline (X1) is communicated with the mud outlet of the first primary sedimentation tank (101), and the second branch pipeline (X2) is communicated with the mud outlet of the second primary sedimentation tank (102);
the electric valve (F) comprises a first electric valve (F1) and a second electric valve (F2), wherein the first electric valve (F1) is arranged on the first branch line (X1) and the second electric valve (F2) is arranged on the second branch line (X2).
7. The system according to claim 6, wherein the input module is configured to input a sludge discharge period and a preset sludge concentration of the first primary sedimentation tank (101) and the second primary sedimentation tank (102).
8. The system according to claim 6, characterized in that said first control module is adapted to open said first electric valve (F1) or said second electric valve (F2), and said first dredge pump (401) or said second dredge pump (402) when said first primary settling tank (101) or said second primary settling tank (102) reaches the operating time of a dredge cycle.
9. The system according to claim 6, characterized in that the comparison module is adapted to compare the signal of the sludge concentration meter (5) with a preset sludge concentration of the first primary sedimentation tank (101) or the second primary sedimentation tank (102).
10. System according to claim 6, characterized in that said second control module is adapted to close said first (F1) or second (F2) electric valve and said first (401) or second (402) dredge pump according to the result of said comparison or said dredge cycle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020749410.7U CN212818327U (en) | 2020-05-08 | 2020-05-08 | Sludge discharge system of primary sedimentation tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020749410.7U CN212818327U (en) | 2020-05-08 | 2020-05-08 | Sludge discharge system of primary sedimentation tank |
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