CN112279348A - Sludge discharge system of efficient clarification tank - Google Patents
Sludge discharge system of efficient clarification tank Download PDFInfo
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- CN112279348A CN112279348A CN202011109935.5A CN202011109935A CN112279348A CN 112279348 A CN112279348 A CN 112279348A CN 202011109935 A CN202011109935 A CN 202011109935A CN 112279348 A CN112279348 A CN 112279348A
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- sludge
- efficiency clarification
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- 239000010802 sludge Substances 0.000 title claims abstract description 129
- 238000005352 clarification Methods 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000004891 communication Methods 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 abstract description 49
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 27
- 238000000151 deposition Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 238000010276 construction Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
Abstract
The invention provides a sludge discharge system of a high-efficiency clarification tank, which comprises the high-efficiency clarification tank, a valve island control box, a gas storage tank, a control system and a gas circuit system, wherein the valve island control box is arranged on the high-efficiency clarification tank; the inside of the high-efficiency clarification tank comprises a mixing reaction zone, a concentration zone and a suspended sludge zone, wherein the mixing reaction zone is provided with a water inlet pipe, the suspended sludge zone is provided with a middle siphon sludge discharge pipe, and the concentration zone is provided with a bottom siphon sludge discharge pipe; the control system comprises a communication unit, an instrument signal unit, a switch signal unit and a PLC controller; the gas circuit system comprises a gas circuit master control unit, a bus board, a pneumatic regulating valve arranged on a water inlet pipe of the high-efficiency clarification tank and sludge discharge pneumatic valves respectively arranged on siphon sludge discharge pipes. The invention shortens the time of opening and closing the valve by using the pneumatic valve to discharge the sludge, obviously shortens the sludge discharge time compared with the electric valve, is beneficial to discharging the sludge in the high-efficiency clarification tank, improves the sludge discharge of the high-efficiency clarification tank, and ensures the water quality and the water quantity of the outlet water.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a sludge discharge system of a high-efficiency clarification tank.
Background
In recent years, with the rapid development of economy, the high-efficiency clarification tank modularization is widely applied to urban water supply projects, the water supply scale is large, the occupied area is small, the water source is yellow river water with higher sand content, the effluent quality is required to be below 10NTU, and the treatment capacity of the high-efficiency clarification tank occupies obvious advantages.
Be equipped with the total electrical control valve that intakes 1 on the total inlet channel of high-efficient depositing reservoir, total intake electromagnetic flowmeter 1, be equipped with the middle part on the high-efficient depositing reservoir row mud pipeline and arrange mud motorised valve 8, mud motorised valve 1 is arranged to the bottom, and high-efficient depositing reservoir is equipped with a motorised valve control box, has manual/long-range automatic row mud on the spot, and long-range time setting functions such as period row mud, order row mud, interval row mud have.
The existing high-efficiency clarification tank sludge discharge control mode: the high-efficient depositing reservoir of single seat is equipped with one of electronic row's mud valve control box on the spot, realizes opening/closing electronic row's mud valve on the spot, and the control signal of every valve, status signal lay to computer lab control room PLC cabinet through the cable, have realized central control room to the control and the control of every electric valve, and control box circuit is complicated on the spot, and the maintenance of being not convenient for under the fault condition is not maintained and is maintained, and the construction degree of difficulty is big, and construction period is long, and construction and running cost are high.
The core part of the high-efficiency clarification tank is mainly the rationality of sludge discharge, depends on the inflow, the inflow turbidity and the outflow turbidity, and particularly provides higher control requirements for sludge discharge of the high-efficiency clarification tank in the muddy water season every year. The electric mud valve has long valve opening and closing time, the valve opening or closing time is about 80s every time when the electric mud valve is executed, about 30min is needed after all 9 electric mud valves are executed, the time is long, the electric mud valve is not beneficial to mud discharging of the high-efficiency clarification tank, the water quality of discharged water is influenced, the valve is sometimes not closed tightly, the leakage phenomenon occurs, frequent maintenance is needed by maintenance personnel, the manpower and material resources are increased, and therefore the electric mud valve has higher control requirements on the mud discharging of the high-efficiency clarification tank.
Disclosure of Invention
The embodiment of the invention provides a sludge discharge system of a high-efficiency clarification tank, which solves the problems that the existing high-efficiency clarification tank adopts an electric valve to open and close the valve in the sludge discharge process, the consumed time is long, and the quality of discharged water is influenced.
A sludge discharge system of a high-efficiency clarification tank comprises the high-efficiency clarification tank, a valve island control box, a gas storage tank, a control system and a gas circuit system;
the inside of the high-efficiency clarification tank comprises a mixing reaction zone, a concentration zone and a suspended sludge zone, wherein the mixing reaction zone is provided with a water inlet pipe, the suspended sludge zone is provided with a middle siphon sludge discharge pipe, and the concentration zone is provided with a bottom siphon sludge discharge pipe;
the control system comprises a communication unit, an instrument signal unit, a switch signal unit and a PLC (programmable logic controller), wherein the communication unit is in data connection with the instrument signal unit and the switch signal unit and sends and receives data with the PLC;
the gas circuit system comprises a gas circuit master control unit, a bus bar, a pneumatic regulating valve arranged on a water inlet pipe of the high-efficiency clarification tank and sludge discharge pneumatic valves respectively arranged on siphon sludge discharge pipes, wherein the sludge discharge pneumatic valves and the pneumatic regulating valve are respectively connected to an outlet of the bus bar through a gas circuit, the sludge discharge pneumatic valves are connected to a switch signal unit, and the pneumatic regulating valves are respectively connected to the switch signal unit and an instrument signal unit;
and a bus board of the gas circuit system, a communication unit of the control system, an instrument signal unit and a switch signal unit are arranged in the valve island control box.
The gas circuit master control unit comprises a filtering pressure reducing valve and a pressure switch, wherein the filtering pressure reducing valve sets the air inlet pressure, and the pressure switch is connected with the control system and used for detecting the pressure of an air inlet source.
Still include air compressor machine and cold machine of doing, the air compressor machine is connected at the inlet end of gas holder, cold machine of doing is connected on the outlet duct way of gas holder.
And the pipeline of the cold dryer is also provided with a filter.
The high-efficiency clarification tank is provided with more than two, is correspondingly provided with a control system and a gas circuit system, and shares a PLC (programmable logic controller) and a gas storage tank.
The time for opening and closing the valve is shortened by using the pneumatic valve to discharge the sludge, the time for opening or closing the valve is about 5s every time when the pneumatic valve is executed, the time for discharging the sludge is about 6min after the pneumatic valve is completely executed, the sludge discharging time is obviously shortened compared with the electric valve, the sludge discharging of the high-efficiency clarification tank is facilitated, the sludge discharging of the high-efficiency clarification tank is improved, and the water quality and the water quantity of discharged water are ensured.
Aiming at each processing module of the high-efficiency clarification tank, corresponding pneumatic valves are designed, a cylinder manifold, an air source and the like form an air path, the control system is used for controlling the air path in a targeted manner according to the acquired signals, a local air path and a circuit parameter unit are connected in series through a special communication bus network and are uploaded to a PLC (programmable logic controller), the networking operation of the local/remote pneumatic valves is realized, and periodic sludge discharge, sequential sludge discharge and interval sludge discharge can be flexibly arranged on a microcomputer; by utilizing the special bus network technology, one-to-one laying of electric and gas circuits of the equipment is not needed, and through the bus technology, the hidden dangers caused by laying of a large number of circuits are reduced, the workload of maintenance personnel is reduced, the construction difficulty is reduced, the construction progress is accelerated, and the construction and operation cost is saved.
The technical scheme provided by the invention has the advantages of simple control, convenience in use, networking of the whole sludge discharge process, no need of maintenance work basically and low use cost.
Drawings
Fig. 1 is a general structural view.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, components or algorithms without departing from the spirit of the invention. In the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention.
Example embodiments will now be described with reference to the accompanying drawings, which may be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
As shown in fig. 1, the present embodiment provides two sets of high efficiency clarifier sludge discharge systems, which are also suitable for multiple sets of high efficiency clarifier sludge discharge systems based on the understanding of those skilled in the art.
Specifically, the high-efficiency clarification tank sludge discharge system provided by the embodiment comprises a high-efficiency clarification tank 10, an air storage tank 50, a valve island control box 60, a control system and an air path system;
the inside of the high-efficiency clarification tank 10 comprises a mixed reaction zone 11, a concentration zone 12 and a suspended sludge zone 13, wherein the mixed reaction zone 11 is provided with a water inlet pipe 14, the suspended sludge zone 13 is provided with a middle siphon sludge discharge pipe 15, and the concentration zone 12 is provided with a bottom siphon sludge discharge pipe 16;
the control system comprises a communication unit 31, an instrument signal unit 33, a switch signal unit 32 and a PLC (programmable logic controller) 34, wherein the communication unit is in data connection with the instrument signal unit and the switch signal unit and sends and receives data with the PLC, the instrument signal unit is used for sending and receiving instrument signals, and the switch signal unit is used for sending and receiving switch signals;
the gas circuit system comprises a gas circuit master control unit 23, a bus board 24, a pneumatic regulating valve 22 arranged on a water inlet pipe of the high-efficiency clarification tank and sludge discharge pneumatic valves 21 respectively arranged on siphon sludge discharge pipes, wherein the sludge discharge pneumatic valves 21 and 22 are respectively connected to outlets of the bus board 24 through gas circuits, the sludge discharge pneumatic valves are connected to a switch signal unit, and the pneumatic regulating valve 22 is respectively connected to a switch signal unit 32 and an instrument signal unit 33. The efficient clarification tank 10 is provided with more than two, is correspondingly provided with a control system and a gas circuit system, and shares a PLC (programmable logic controller) and a gas storage tank 50;
the manifold 24 of the air circuit system, the communication unit 31 of the control system, the instrument signal unit 33 and the switch signal unit 32 are contained in the valve island control box 60.
The gas path master control unit 23 comprises a filtering pressure reducing valve and a pressure switch, wherein the filtering pressure reducing valve sets the air inlet pressure, and the pressure switch is connected with the control system and used for detecting the pressure of the air inlet source.
The mud system is arranged to high-efficient depositing reservoir that this embodiment provided still includes air compressor 51 and cold machine 52 of doing, the air compressor machine is connected at the inlet end of gas holder 50, cold machine 52 of doing is connected on gas holder 50's the outlet duct way.
The pipeline of the cold dryer is also provided with a filter for fully filtering the gas of the gas source.
The signal wire of the pneumatic control valve 22 is connected to the corresponding switch signal unit, the pressure switch of the air source is also connected to the corresponding switch signal unit, the communication units are connected in series by using a special communication network, and one signal is led out to be uploaded to the PLC controller, so that the whole network system is built.
Taking a PLC controller as an example, a corresponding communication program is made in the PLC controller, all equipment information and states are collected into the PLC controller through a special network, corresponding address information is given to the PLC controller, and according to the operation requirement of the high-efficiency clarification tank, a sludge discharge program of the high-efficiency clarification tank, an equipment operation and fault program, an air source pipeline pressure low reporting program, a pneumatic valve field execution state indicating program, a total water inlet pneumatic regulating valve opening program, a total water inlet flow program and the like are written.
The sludge discharge process of the high-efficiency clarification tank comprises periodic sludge discharge, sequential sludge discharge and interval sludge discharge. The sludge discharge period (h), the sludge discharge time(s) and the interval time(s) are preset on a microcomputer of a control room, and the time length of the three parameters can be adjusted at any time according to the turbidity of the inlet water. Automatic mud discharging, selection switch dial to long-rangely, after computer lab PLC control station received long-range instruction, send long-range request information to the control room computer, operating personnel confirms on the computer, selects to the high-efficient clarification tank of numbering: sludge is discharged from a No. 1 high-efficiency clarification tank or a No. 2 high-efficiency clarification tank or a No. 1 and No. 2 high-efficiency clarification tank. Selecting an executed sludge discharge program: periodic sludge discharge or sequential sludge discharge or interval sludge discharge. The sequential sludge discharge program and the interval sludge discharge program are different in valve opening quantity and valve opening sequence, sludge discharge time, valve interval time and sludge discharge execution process are the same, and the two sludge discharge programs can be flexibly selected according to water inlet turbidity and water outlet turbidity. The sequential sludge discharge opens and closes the valve sequence: the middle part 1# mud discharging pneumatic valve → the middle part 2# mud discharging pneumatic valve → the middle part 3# mud discharging pneumatic valve → the middle part 4# mud discharging pneumatic valve → the middle part 5# mud discharging pneumatic valve → the middle part 6# mud discharging pneumatic valve → the middle part 7# mud discharging pneumatic valve → the middle part 8# mud discharging pneumatic valve → the bottom mud discharging pneumatic valve. Opening and closing the valve at intervals: middle 1#, 8# mud discharging pneumatic valves → middle 2#, 7# mud discharging pneumatic valves → middle 3#, 6# mud discharging pneumatic valves → middle 4#, 5# mud discharging pneumatic valves → bottom mud discharging pneumatic valves
There are two modes of operation of the operator on the microcomputer: remote manual and remote automatic. Under the long-range manual mode, if the operating personnel has selected 1# high-efficient depositing reservoir row mud on the computer, carry out order row mud procedure, open 1# high-efficient depositing reservoir middle part 1# row mud pneumatic valve on the window picture, carry out row mud time, after row mud time ends, close middle part 1# row mud pneumatic valve, carry out valve interval time, interval time arrives, open middle part 2# row mud pneumatic valve, carry out row mud time, after row mud time ends, close middle part 2# row mud pneumatic valve, carry out valve interval time again. If the 2# high-efficiency clarification tank is selected for sludge discharge, the remote manual operation process is the same as the sludge discharge of the 1# high-efficiency clarification tank. In the execution process, a valve opening in-place signal or a valve closing in-place signal is fed back to the PLC control module through the special bus, the PLC control module receives the valve opening in-place signal or the valve closing in-place signal, a valve opening in-place signal or a valve closing in-place signal state instruction is sent to the communication unit through the special bus, the communication unit outputs the corresponding indicator light to be on after receiving the valve opening in-place signal or the valve closing in-place signal instruction, and the position state of the mud valve can be remotely monitored by a microcomputer in a control room.
In the remote automatic mode, there are two types of mud discharge procedures: and sequentially discharging mud and alternately discharging mud. If the operator selects the 1# high-efficiency clarification tank to discharge the sludge on the microcomputer, the sequential sludge discharge procedure is executed, when the mud discharging period time is up, the 1# mud discharging pneumatic valve at the middle part of the 1# high-efficiency clarification tank is automatically opened, the mud discharging time is executed, after the mud discharging time is over, automatically closing the middle 1# mud discharging pneumatic valve, executing the interval time of the valve, when the interval time is up, automatically opening the middle 2# mud discharging pneumatic valve, executing the mud discharging time, after the mud discharging time is over, automatically closing the middle 2# mud discharging pneumatic valve, then executing valve interval time, the middle 8# mud discharging pneumatic valve is automatically executed according to the sequence, then the interval time of the valves is executed, the bottom mud discharging pneumatic valve is automatically opened when the interval time is up, the mud discharging time is executed, after the mud discharging time is over, the bottom sludge discharge pneumatic valve is automatically closed, the remote automatic sludge discharge of the 1# high-efficiency clarification tank is finished, and the sludge discharge program automatically enters the next sludge discharge period. If the 2# high-efficiency clarification tank is selected for sludge discharge, the remote automatic operation process is the same as the sludge discharge of the 1# high-efficiency clarification tank. In the execution process, a valve opening in-place signal or a valve closing in-place signal is fed back to the PLC control module through the special bus, the PLC control module receives the valve opening in-place signal or the valve closing in-place signal, a valve opening in-place signal or a valve closing in-place signal state instruction is sent to the communication unit through the special bus, the communication unit outputs the corresponding indicator light to be on after receiving the valve opening in-place signal or the valve closing in-place signal instruction, and the position state of the mud valve can be remotely monitored by a microcomputer in a control room.
In a remote automatic mode, if an operator selects the 1# high-efficiency clarification tank to discharge sludge on a microcomputer, an interval sludge discharge program is executed, when sludge discharge cycle time is up, the 1# high-efficiency clarification tank middle part 1# and the 8# sludge discharge pneumatic valves are automatically opened, sludge discharge time is executed, after the sludge discharge time is over, the middle part 1# and the 8# sludge discharge pneumatic valves are automatically closed, valve interval time is executed, the interval time is up, the middle part 2# and the 7# sludge discharge pneumatic valves are automatically opened, sludge discharge time is executed, after the sludge discharge time is over, the middle part 2# and the 7# sludge discharge pneumatic valves are automatically closed, valve interval time is executed, the interval time is up, the middle part 3# and the 6# sludge discharge pneumatic valves are automatically opened, sludge discharge time is executed, after the sludge discharge time is over, the middle part 3# and the 6# sludge discharge pneumatic valves are automatically closed, the interval time is executed, the interval time is up, the middle part 4# is automatically opened, The 5# mud discharging pneumatic valve executes the mud discharging time, and after the mud discharging time is finished, the middle 4# and 5# mud discharging pneumatic valves are automatically closed, the interval time of the valves is executed, the interval time arrives, the bottom mud discharging pneumatic valve is automatically opened, the mud discharging time is executed, after the mud discharging time is finished, the bottom mud discharging pneumatic valve is automatically closed, the remote automatic mud discharging of the 1# high-efficiency settling pond is finished, and a mud discharging program automatically enters the next mud discharging period. If the 2# high-efficiency clarification tank is selected for sludge discharge, the remote automatic operation process is the same as the sludge discharge of the 1# high-efficiency clarification tank. In the execution process, a valve opening in-place signal or a valve closing in-place signal is fed back to the PLC through the special bus, the PLC receives the valve opening in-place signal or the valve closing in-place signal, a valve opening in-place signal or a valve closing in-place signal state instruction is sent to the communication unit through the special bus, after the communication unit receives the valve opening in-place signal or the valve closing in-place signal instruction, the corresponding indicator lamp is turned on, and the position state of the mud valve can be remotely monitored by a microcomputer in a control room.
Under long-range automatic mode, if operating personnel has selected 1# high-efficient depositing reservoir row mud and 2# high-efficient depositing reservoir row mud on the computer, carry out order row mud procedure or interval row mud procedure, arrange the mud process and should carry out 1# high-efficient depositing reservoir row mud procedure earlier, after 1# high-efficient depositing reservoir row mud procedure, carry out 2# high-efficient depositing reservoir row mud procedure again, after 2# high-efficient depositing reservoir row mud procedure, arrange the mud procedure and get into next row mud cycle automatically, concrete row mud process sees under long-range automatic mode, order row mud and interval row mud mode.
Mud is arranged to manual on the spot, and selector switch dials to manual on the spot, and after computer lab PLC control station accepted manual instruction on the spot, operating personnel arranged mud to high-efficient depositing reservoir through the panel button. An operator presses a middle 1# sludge discharge pneumatic valve opening instruction, a signal is transmitted to a PLC control station through a special bus, after the PLC receives the valve opening instruction, the communication unit sends a valve opening instruction to a communication unit through the special bus, after the communication unit receives the valve opening instruction, the middle 1# sludge discharge pneumatic valve is opened, sludge discharge time is executed, after the sludge discharge time is finished, the operator presses a middle 1# sludge discharge pneumatic valve closing instruction, the signal is transmitted to the PLC control station through the special bus, after the PLC receives the valve closing instruction, the communication unit sends a valve closing instruction to the communication unit through the special bus, after the communication unit receives the valve closing instruction, the middle 1# sludge discharge pneumatic valve is closed, local manual sludge discharge of the middle 1# sludge discharge pneumatic valve is finished, and local manual operation methods of the 2# to 8# middle sludge discharge pneumatic valve and the bottom sludge discharge pneumatic valve are the same as those of the middle 1# sludge discharge pneumatic valve. In the execution process, a valve opening in-place signal or a valve closing in-place signal is fed back to the PLC through the special bus, the PLC receives the valve opening in-place signal or the valve closing in-place signal, a valve opening in-place signal or a valve closing in-place signal state instruction is sent to the communication unit through the special bus, the communication unit outputs a corresponding indicator lamp to be turned on after receiving the valve opening in-place signal or the valve closing in-place signal instruction, and the microcomputer in the control room can remotely monitor the position state of the mud valve.
The core part of the high-efficiency clarification tank is mainly the rationality of sludge discharge, the core part is determined by the water inflow, the water inflow turbidity and the water outflow turbidity, particularly, the annual muddy water season is improved, higher control requirements are provided for sludge discharge of the high-efficiency clarification tank, according to the organized sludge discharge control program, the manual/remote automatic sludge discharge of the high-efficiency clarification tank is realized, the sludge is discharged in a remote period, the sludge is discharged in sequence, the sludge is discharged at intervals, and the reasonable sludge discharge program is selected according to the water inflow and the water outflow turbidity, the sludge discharge period (h) is reasonably set on a microcomputer of a control room, the sludge discharge time(s) and the interval time(s), and the time length can be adjusted at any time according to the water inflow turbidity by the three parameters. The pneumatic valve is used for adjusting the positioning module in the sludge discharging process, and the linkage total water inlet electromagnetic flowmeter realizes that the liquid level of the high-efficiency clarification tank is reduced too fast to influence the water outlet quantity and the water outlet quality due to sludge discharging.
It will be appreciated by persons skilled in the art that the above embodiments are illustrative and not restrictive. Different features which are present in different embodiments may be combined to advantage. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art upon studying the specification and the claims. In the claims, the term "comprising" does not exclude other means or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to denote a name and not to denote any particular order.
Claims (5)
1. A sludge discharge system of a high-efficiency clarification tank is characterized by comprising the high-efficiency clarification tank, a valve island control box, a gas storage tank, a control system and a gas circuit system;
the inside of the high-efficiency clarification tank comprises a mixing reaction zone, a concentration zone and a suspended sludge zone, wherein the mixing reaction zone is provided with a water inlet pipe, the suspended sludge zone is provided with a middle siphon sludge discharge pipe, and the concentration zone is provided with a bottom siphon sludge discharge pipe;
the control system comprises a communication unit, an instrument signal unit, a switch signal unit and a PLC (programmable logic controller), wherein the communication unit is in data connection with the instrument signal unit and the switch signal unit and sends and receives data with the PLC;
the gas circuit system comprises a gas circuit master control unit, a bus bar, a pneumatic regulating valve arranged on a water inlet pipe of the high-efficiency clarification tank and sludge discharge pneumatic valves respectively arranged on siphon sludge discharge pipes, wherein the sludge discharge pneumatic valves and the pneumatic regulating valve are respectively connected to an outlet of the bus bar through a gas circuit, the sludge discharge pneumatic valves are connected to a switch signal unit, and the pneumatic regulating valves are respectively connected to the switch signal unit and an instrument signal unit;
and a bus board of the gas circuit system, a communication unit of the control system, an instrument signal unit and a switch signal unit are arranged in the valve island control box.
2. Sludge discharge system according to claim 1,
the gas circuit master control unit comprises a filtering pressure reducing valve and a pressure switch, wherein the filtering pressure reducing valve sets the air inlet pressure, and the pressure switch is connected with the control system and used for detecting the pressure of an air inlet source.
3. Sludge discharge system according to claim 1,
still include air compressor machine and cold machine of doing, the air compressor machine is connected at the inlet end of gas holder, cold machine of doing is connected on the outlet duct way of gas holder.
4. Sludge discharge system according to claim 3,
and the pipeline of the cold dryer is also provided with a filter.
5. Sludge discharge system according to claim 1,
the high-efficiency clarification tank is provided with more than two, is correspondingly provided with a control system and a gas circuit system, and shares a PLC (programmable logic controller) and a gas storage tank.
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| CN202011109935.5A CN112279348A (en) | 2020-10-16 | 2020-10-16 | Sludge discharge system of efficient clarification tank |
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| CN202011109935.5A CN112279348A (en) | 2020-10-16 | 2020-10-16 | Sludge discharge system of efficient clarification tank |
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| CN202740832U (en) * | 2012-05-04 | 2013-02-20 | 武汉钢铁(集团)公司 | Sludge discharge system of settling pond |
| CN209405768U (en) * | 2018-10-16 | 2019-09-20 | 华电能源股份有限公司牡丹江第二发电厂 | A kind of clarifying basin sludge drainage system |
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2020
- 2020-10-16 CN CN202011109935.5A patent/CN112279348A/en active Pending
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Application publication date: 20210129 |