CN112979126A - Automatic control system for sludge dewatering of water plant - Google Patents
Automatic control system for sludge dewatering of water plant Download PDFInfo
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- CN112979126A CN112979126A CN202110212817.5A CN202110212817A CN112979126A CN 112979126 A CN112979126 A CN 112979126A CN 202110212817 A CN202110212817 A CN 202110212817A CN 112979126 A CN112979126 A CN 112979126A
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- 239000010802 sludge Substances 0.000 title claims abstract description 143
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000005189 flocculation Methods 0.000 claims abstract description 5
- 230000016615 flocculation Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 88
- 239000003814 drug Substances 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 239000011550 stock solution Substances 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 16
- 239000010865 sewage Substances 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 13
- 238000000265 homogenisation Methods 0.000 claims description 12
- 230000018044 dehydration Effects 0.000 claims description 10
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000005345 coagulation Methods 0.000 claims description 6
- 230000015271 coagulation Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 2
- 230000008719 thickening Effects 0.000 claims 2
- 239000000243 solution Substances 0.000 description 21
- 238000004094 preconcentration Methods 0.000 description 18
- 208000005156 Dehydration Diseases 0.000 description 8
- 238000011049 filling Methods 0.000 description 8
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 241000411851 herbal medicine Species 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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- 230000037452 priming Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
-
- 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
-
- 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
- C02F2201/004—Seals, connections
-
- 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
- C02F2201/005—Valves
-
- 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]
-
- 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]
- C02F2209/008—Processes using a programmable logic controller [PLC] comprising telecommunication features, e.g. modems or antennas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Abstract
The invention relates to a water plant sludge dewatering automatic control system, which comprises: the automatic control PLC system is used for acquiring state signals of all field devices in the sludge dewatering system and controlling corresponding switches, processing the acquired state signals and then sending the processed state signals to an upper computer, and meanwhile, executing logic judgment and processing according to the acquired state signals; the sludge dewatering system executes a control instruction sent by the automatic control PLC system to integrally complete the processes of sludge flocculation, concentration and dewatering; the industrial control network provides a data transmission channel between the automatic control PLC system and an upper computer, before the automatic control PLC system and the alarm system and before the automatic control PLC system and the sludge dewatering system, and the upper computer acquires a state signal sent by the automatic control PLC system and acquires the running state of the sludge dewatering machine; and the alarm system is in wireless connection with the automatic control PLC system and is used for alarming the fault problem of the sludge dewatering system judged by the automatic control PLC system. Compared with the prior art, the invention has the advantages of high operation efficiency, cost saving and the like.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to an automatic control system for sludge dewatering in a water plant.
Background
The water works are used as city tap water purification treatment plants, a large amount of sludge wastewater byproducts are generated in the raw water purification treatment process, along with the increasingly strict trend of the national policy on environmental protection, the centralized treatment of the sludge wastewater of the water works and the prevention of secondary pollution become necessary process links of water production processes of the water works, and automatic control systems matched with sludge treatment are developed along with the process links. Most of control modes have to be interrupted after equipment fails, such as power sources of a water pump, a motor and the like fail, the sludge discharging process can be continuously processed after maintenance by maintenance personnel, and the control efficiency and the operation efficiency are low due to the fact that the control modes are inconvenient to operate and do not have timely alarm operation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an automatic control system for sludge dewatering in a water plant.
The purpose of the invention can be realized by the following technical scheme:
an automatic control system for sludge dewatering in water plants, comprising:
the automatic control PLC system is used for acquiring state signals of all field devices in the sludge dewatering system and controlling corresponding switches, processing the acquired state signals and then sending the processed state signals to an upper computer, and meanwhile, executing logic judgment and processing according to the acquired state signals;
the sludge dewatering system executes a control instruction sent by the automatic control PLC system to integrally complete the processes of sludge flocculation, concentration and dewatering;
the industrial control network provides a data transmission channel between the automatic control PLC system and the upper computer, in front of the automatic control PLC system and the alarm system and in front of the automatic control PLC system and the sludge dewatering system,
the upper computer is used for acquiring a state signal sent by the automatic control PLC system and acquiring the running state of the sludge dewatering machine;
and the alarm system is in wireless connection with the automatic control PLC system and is used for alarming the fault problem of the sludge dewatering system judged by the automatic control PLC system.
The sludge dewatering system comprises an adjusting tank, a concentration tank, a homogenization tank, a filter press equipment set and a liquid distribution system, wherein sewage in the adjusting tank is pumped into the concentration tank through a submersible pump, the concentration tank is internally provided with a concentrator, the concentration tank is provided with a concentration meter for measuring the concentration of sludge between the concentration tank and the homogenization tank, and the filter press equipment set separates mud and water in the sludge under the action of the liquid distribution system and generates dry mud through the extrusion of filter cloth. And the sewage of the regulating tank is pumped into the two concentration tanks by four submersible pumps.
The sludge dewatering system is provided with six sets of filter press equipment sets and a set of liquid preparation system. The filter press equipment set comprises a submersible pump, a flushing pump, a liquid medicine pump, pneumatic valves corresponding to the pumps, a coagulation device and a filter press.
The liquid preparation system comprises a stock solution tank and two liquid medicine tanks, the stock solution tank stores stock solution, liquid is prepared in the liquid medicine tanks, each liquid medicine tank is provided with a respective stirrer, and prepared liquid medicine is released into the filter press through the liquid medicine pump.
The production sewage discharge of water factory is concentrated via establishing the pipeline specially and is discharged extremely in the equalizing basin, the sewage of equalizing basin passes through the diving pump and pumps to the concentrated pond in, install concentrated machine in the concentrated pond, under the effect of concentrated machine, mud deposits to the pipeline exit at concentrated bottom of the pool, and the clear water rises to the surface of concentrated pond, through the precipitation of certain time, and the mud concentration of concentrated bottom of the pool portion progressively risees, and after bottom of the pool mud concentration reached certain numerical value, the concentrated pond discharges the even pond of level slightly being less than the concentrated pond with mud through natural gravity effect in, and the mud concentration in the even pond reaches certain height after, starts the equipment of dehydration computer lab and carries out sludge treatment.
The automatic control PLC system executes alarm operation by judging whether the liquid level of the regulating reservoir exceeds a lower limit, starts the dispensing system if alarm occurs, sequentially judges whether each submersible pump sends a fault, executes alarm operation on the submersible pump with the fault, and starts the other submersible pump.
And the automatic control PLC system executes alarm operation by judging whether the liquid level of the homogenization tank exceeds the upper limit or not, and starts another concentration tank if alarm occurs. The automatic control PLC system detects whether the water content exceeds a threshold value or not after sludge discharge, whether a valve of the concentration tank is closed or not is executed, if yes, the corresponding valve is closed, if not, the adjusting tank is continuously controlled to discharge sludge, sludge dewatering is started, and sludge discharge of the concentration tank is continued.
Compared with the prior art, the automatic control system for the sludge dewatering of the water plant provided by the invention at least has the following beneficial effects:
1) the invention integrates and intelligentizes the flocculation, concentration and dehydration processes of the sludge through PLC control; the PLC can control the adding amount of the medicament and the automatic operation of the flocculation tank and the sludge dewatering machine, and can realize more intelligent and efficient control;
2) the invention is provided with a plurality of submersible pumps, concentration tanks, filter presses, liquid medicine tanks and the like, when equipment fails, standby equipment can be adopted in time, the sludge discharge process cannot be interrupted, and maintenance personnel are not required to maintain immediately, so that the time cost is saved, and the operation efficiency is ensured;
3) and for the condition of failure, the alarm operation can be timely executed, and the upper computer and related management personnel can timely acquire the running state of the sludge dewatering machine.
Drawings
FIG. 1 is a block diagram of an automatic control system for sludge dewatering in a water plant according to an embodiment;
FIG. 2 is a schematic view of a sewage disposal flow of a regulating reservoir in an embodiment;
FIG. 3 is a schematic view of the blowdown flow of the concentration tank in the embodiment;
FIG. 4 is a schematic diagram of an alarm flow of a regulation pool in the embodiment;
FIG. 5 is a schematic diagram of an alarm flow of the homogenization pool in the embodiment;
FIG. 6 is a schematic flow chart of a liquid preparation operation in the embodiment;
FIG. 7 is a schematic view showing a shutdown process of the filter press according to the embodiment;
FIG. 8 is a schematic view showing the operation of the filter press according to the embodiment;
FIG. 9 is a schematic view showing the process flow of the operation failure of the filter press according to the embodiment;
FIG. 10 is a schematic view of a sludge dewatering process in the example.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Examples
The invention relates to an automatic control system for sludge dewatering in a water plant, which comprises an automatic control PLC system, a sludge dewatering system, an industrial control network, an upper computer and an alarm system.
The dehydration process is the core flow of the whole sludge dehydration treatment. The sludge dewatering system comprises an adjusting tank, a concentration tank, a concentrator, a filter press equipment set and sewage of a liquid distribution system adjusting tank are pumped into the concentration tank through a submersible pump, the concentrator is installed in the concentration tank, a concentration meter used for measuring the concentration of the sludge is arranged between the concentration tank and a homogenization tank, the filter press equipment set separates mud and water in the sludge under the action of the liquid distribution system, the filter press equipment set generates dry mud through the extrusion of filter cloth and comprises a sludge pump, a flushing pump, a submersible pump, a coagulator, a filter press, a medicine liquid pump and a related pneumatic valve. The liquid preparation system comprises a stock solution tank and two liquid medicine tanks, wherein the stock solution tank is used for storing stock solution, liquid preparation (adding water into the stock solution) is carried out in the liquid medicine tanks, and the prepared liquid medicine is released into the filter press through the liquid medicine pump. The sludge is pumped to the filter cloth of the filter press by a sludge pump, and under the action of the liquid medicine, mud in the sludge is separated from water, and the dry mud is generated by the extrusion of the filter cloth. The filter press is provided with upper and lower filter cloth.
The alarm system is in wireless connection with the automatic control PLC system and is used for alarming the fault problem judged by the automatic control PLC system.
The automatic control of the system is independently completed by an automatic control PLC system, the automatic control function of the system is relatively independent of the original PLC used for controlling the operation of each device, the system can exchange data with the original PLC, and simultaneously all data are transmitted to an industrial control network for being collected by an upper computer. The PLC adopted by the invention operates independently to control the sludge dewatering operation, is provided with a network port, and performs data communication with other control system PLCs only through the network port, and the communication port can use an industrial Ethernet protocol and can also use other industrial communication protocols.
The automatic control PLC system firstly finishes the state signal acquisition and corresponding control of field equipment, including the state and control of a controlled valve, the state and control of a pump, the state and control of a motor system, the state and control of a filter press, signals of a flowmeter and the like. The state and control signals of the field equipment are processed by the PLC and then are sent to the upper computer system, and meanwhile, the PLC makes logic judgment and processing according to the field condition to complete the automatic control of the whole system.
In this example, the effluent from the conditioning tank was pumped to 2 concentration tanks by 4 submersible pumps. The concentration tank belongs to an overflow tank, and a concentrator is arranged in the tank. Under the action of the thickener, sludge is precipitated at the outlet of the pipeline at the bottom of the tank, and clear water rises to the surface of the tank and flows into the drainage tank through the overflow teeth at the upper part of the tank for recycling. After a certain time of sedimentation, the sludge concentration at the bottom of the concentration tank is gradually increased. After the sludge concentration at the bottom of the tank reaches a certain value, the sludge is discharged into a homogenizing tank with the horizontal height slightly lower than that of the concentration tank through the natural gravity action. A concentration meter is arranged between the concentration tank and the homogenization tank to measure the sludge concentration. The sludge concentration in the homogenizing pool is quite high, and after the sludge in the homogenizing pool reaches a certain height, the equipment of the dewatering machine room is manually started for sludge treatment. The concentrated pond total two inlet valves side by side, number 1 and number 2 correspond No. 1 and No. 2 concentrated ponds respectively. The invention is additionally provided with a pre-concentration tank.
The dehydration machine room is a core workshop of the whole sludge dehydration treatment project. The workshop is internally provided with 6 sets of filter press equipment sets and 1 set of liquid preparation system. The filter press equipment group comprises a sludge pump, a flushing pump, a coagulation device, a filter press, a liquid medicine pump and a related pneumatic valve. The liquid preparation system comprises a stock solution tank and two liquid medicine tanks (solution tanks), wherein the stock solution tank is used for storing stock solution, the liquid medicine tanks are used for preparing liquid medicine (adding water into the stock solution), and each solution tank is provided with a stirrer; the prepared liquid medicine is released into the filter press through the liquid medicine pump. The sludge is pumped to the filter cloth of the filter press by a sludge pump, and under the action of the liquid medicine, mud in the sludge is separated from water, and the dry mud is generated by the extrusion of the filter cloth.
a. The whole process can be divided into 3 important and independent links, namely adjusting tank sludge discharge, concentration tank sludge discharge and dewatering machine room sludge drying.
The sewage discharge of the adjusting tank can automatically set several levels of water levels by a user according to the water level of the adjusting tank, and the water levels correspond to the number of the started pumps respectively. Because the concentration tank belongs to the overflow tank, the adjusting tank can continuously discharge mud into the concentration tank within the designed flow range.
The sludge discharge of the concentration tank depends on the concentration of the sludge at the bottom of the tank, a user sets the concentration value for starting to discharge according to the actual situation, the automatic control system detects the concentration of the sludge at regular time and determines whether to discharge the sludge according to the setting of the user.
The control of the dewatering machine room is started manually, but the starting and the ending are safely processed by an automatic control system according to the actual situation. The dispensing systems are relatively independent, the user sets the ratio of the liquid medicine, and the start and the end of the dispensing process need manual control.
As shown in fig. 10, the B-series numbers indicate pumps, the JB-series numbers indicate blenders, and the MV-series numbers indicate electric valves, i.e., electric valves are used for the respective outlet and inlet valves. The serial numbers D represent a sludge turbidity meter, the serial numbers F represent a flow meter, and the serial numbers L represent a liquid level meter. Fig. 10 shows that the sludge treatment process of the present invention is completed through the following flow-through tanks in sequence: the filter tank backflushes waste water, a sewage tank, a pre-concentration tank, a sludge discharge water adjusting tank, a concentration tank and a balance tank (a sludge homogenizing tank) in a matched manner, and the two solution tanks are matched. Because the sludge treatment workshop only has the washing wastewater at night and does not have the sludge discharge water of the sedimentation tank, the sludge discharge water of the sedimentation tank does not need to enter. Wherein, the back flush waste water of filtering pond inputs to the preconcentration pond through the effluent water sump, and the exit valve MV001 of preconcentration pond is connected the sludge discharge water equalizing basin, is equipped with mixer and pump in the sludge discharge water equalizing basin. The sludge water regulating reservoir is connected with two concentration reservoirs, the No. 1 concentration reservoir is connected with the sludge water regulating reservoir through a concentration reservoir outlet valve MV201, and the No. 2 concentration reservoir is connected with the sludge water regulating reservoir through a concentration reservoir outlet valve MV 202. Be equipped with the mixer in the homogeneous pond, the homogeneous pond passes through valve MV203 and connects concentrated pond, and the exit linkage sheet frame filter-pressing and the mud system of even pond. The No. 1 solution pond is provided with a stock solution inlet valve MV101, an outlet valve MV103, a blender JB101 and a pump B101. The No. 2 solution pond is provided with a stock solution inlet valve MV102, an outlet valve MV104, a blender JB102 and a pump B102.
1. Regarding the pre-concentration tank:
the pre-concentration tank is originally provided with no liquid level meter, and the liquid level meter needs to be additionally installed to realize automatic control, but in the practical application process, the tank does not accord with the condition of installing the liquid level meter due to the obstruction of the grating, and the actual liquid level of the tank cannot be accurately measured even if the liquid level meter is installed, so that the automatic control is realized by installing a liquid level high alarm switch. Due to the fact that the space of the on-site control cabinet of the pre-concentration tank is narrow, the automatic control is achieved by connecting the existing automatic control terminal with the liquid level high alarm switch.
The pre-concentration tank is automatically controlled, when the high alarm switch does not alarm, the pre-concentration tank does not reach the maximum load, water can be continuously fed, when the high alarm switch alarms, the pre-concentration tank reaches the maximum load, at the moment, a valve leading the pre-concentration tank to the sludge discharge water regulating tank is opened, and water is continuously fed into the sludge discharge water regulating tank.
Pre-concentration cell signal: the system comprises a pre-concentration pool outlet valve 1, a remote local signal 1, a valve opening signal 1, a valve closing signal 1, a valve fault signal 1, a liquid level high alarm signal 1, a valve opening signal 1, a valve closing signal 1, a valve stopping signal 1 and a liquid level meter signal 1.
DI signal: 5, DO signal: 3, AI signal: 1 (reserved).
2. Regarding the sludge water adjusting tank:
the sludge water regulating reservoir is originally provided with the liquid level meter without being additionally arranged. The field control cabinet of the sludge water regulating tank is provided with a certain space and an automatic control terminal, and for a plurality of lifting pumps to be controlled on site, the front end of each lifting pump is provided with a manual valve, and module points need to be reserved in consideration of the need of changing the lifting pumps into electric valves.
The automatic control mode of the sludge water regulating tank is as follows: and the water inlet of each lifting pump and the front valve of each pump to the concentration tank is controlled by setting the height alarm of the liquid level meter. For example, 4 lift pumps are generally required to be controlled on site, 4 manual valves are arranged at the front ends of the lift pumps, and the sludge discharge adjusting tank controls the 4 lift pumps and the valves in front of the 4 pumps to feed water into the concentration tank by setting the height alarm of the liquid level meter.
Sludge water regulating reservoir signal: outlet valve 4 of the sludge water regulating tank, remote local signal 4, valve opening signal 4, valve closing signal 4, valve fault signal 4, valve opening signal 4, valve closing signal 4 and valve stopping signal 4.
The sludge water adjusting tank lifting pump 4 (reserved), a remote local signal 4, an operation signal 4, a fault signal 4, an on signal 4 and an off signal 4.
DI signal: 28, DO signal: 20, AI signal: 2 pieces of the Chinese herbal medicines.
3. Regarding the concentration tank:
the concentration tank is the same as the pre-concentration tank, a liquid level meter is not installed originally, and a liquid level instrument cannot be installed through field investigation, so that automatic control is realized by determining to install a liquid level high alarm switch.
The automatic control mode of the concentration tank is characterized in that when the high alarm switch does not alarm, the concentration tank does not reach the maximum load, water can be continuously fed, when the high alarm switch alarms, the concentration tank reaches the maximum load, at the moment, a valve leading the concentration tank to the balance tank is opened, and water is continuously fed into the balance tank.
Concentration cell signal: concentration tank outlet valve 2, remote local signal 2, valve open-foot signal 2, valve close-foot signal 2, valve fault signal 2, liquid level high alarm signal 2, valve open signal 2, valve close signal 2, valve stop signal 2 and liquid level meter signal 2.
DI signal: 10, DO signal: 5, AI signal: 2 (reserved).
Further, if the pre-concentration tank and the adjusting tank are in accordance with the maximum load of operation at night after actual measurement, the step of passing through the concentration tank is not considered for the moment.
4. Regarding the drug filling process:
the medicament filling mainly controls the filling points of the inlet of the pre-concentration tank and the inlet of the concentration tank. The opening of a filling pump of the pre-concentration tank is adjusted as follows: the inlet valve of the pre-concentration tank is opened, the starting condition of the filling pump of the concentration tank is that the lifting pump of the adjusting tank starts to operate, and only the filling pump needs to operate during filling without adjusting the filling amount. Because the main programming of the dosing system is completed by foreign technicians, the hardware equipment adopts Siemens PLC, and if the separation difficulty and risk are high, the prior equipment terminal and cable are adopted, and a field control box and a control cable are independently arranged to ensure the safe operation of the system.
Medicament filling signal: post-pump outlet valve 5 (reserved), remote in-situ signal 5, valve open foot signal 5, valve close foot signal 5, valve failure signal 5, valve open signal 5, valve close signal 5.
Fill pump 5, remote local signal 5, run signal 5, fault signal 5, on signal 5, off signal 5.
DI signal: 35, DO signal: 25 in number.
Further, PAM was used for priming.
As shown in fig. 2, the sewage discharge flow of the sludge water discharge regulating tank controlled by the automatic control PLC system includes the following steps:
and a step a1, starting a sludge dewatering program, namely starting sludge discharge of each concentration tank.
Step a2, judging whether the liquid level of the concentration tank exceeds the lower limit of the liquid level standard line by the automatic control PLC system, if so, executing the alarm of the sludge discharge water regulating tank, and the specific steps of the alarm of the sludge discharge water regulating tank are shown in figure 4. Otherwise, judging whether the liquid level of the drainage pool is too high, if so, controlling the drainage pool to alarm, controlling the opened valves to be closed, and exiting the program; otherwise, executing the next step.
Step a3, controlling a stirrer and a dosing pump to be started, dosing in a concentration tank, linking with the dosing pump through the stirrer and adopting time control; judging whether the time from the start of the stirrer and the dosing pump is controlled to reach 10 minutes or not, if so, judging whether the No. 1 submersible pump is started or not, otherwise, continuing counting until the time reaches 10 minutes; if the No. 1 submersible pump is started at present, the No. 2 submersible pump is started again, otherwise, the No. 1 submersible pump is started.
And a step a4, judging whether the opened submersible pump in the step a3 breaks down, if so, starting another submersible pump, judging whether the other submersible pump breaks down, if so, giving an alarm, and starting a standby submersible pump, namely the No. 3 submersible pump. After the submersible pump is opened, whether the submersible pump breaks down or not is judged, if yes, an alarm is given, and all opened valves are closed; if not, the next step is executed.
Step a5, judging whether the sludge is discharged from the No. 1 concentration tank or the No. 2 concentration tank at present, if the sludge is discharged from the No. 1 concentration tank, opening the No. 2 inlet valve, and discharging the concentrated sludge into the No. 2 concentration tank; if the sludge is discharged from the No. 2 concentration tank, the No. 1 inlet valve is opened, and the concentrated sludge is discharged into the No. 1 concentration tank.
If the flow fails, the following steps are carried out:
and if the submersible pump fails, closing the corresponding water pump and valve, and opening other water pumps or interrupting the sludge discharge process according to actual conditions.
Fault treatment of the concentration tank:
and alarming the over-torque fault of the electric valve.
If the equipment of the dehydration machine room is in fault, the whole set of equipment is stopped and an alarm is given out after any equipment is in fault due to the strong equipment correlation of the dehydration machine room.
In fig. 4, the concrete steps of the alarm of the muddy water adjusting tank are as follows:
starting an adjusting tank alarm subprogram, judging whether the liquid level of the adjusting tank exceeds an upper limit, if so, not allowing the settling tank to discharge mud, and alarming; if not, judging whether the liquid level reaches the upper limit again after a period of time, and if so, alarming at the upper limit; if not, judging whether the liquid level exceeds the lower limit, if so, alarming the lower limit, otherwise, judging whether the liquid level exceeds the lower limit again after interval time, if so, turning off the stirrer, the submersible pump and the dosing pump and then alarming, otherwise, judging whether each submersible pump breaks down; specifically, the method comprises the following steps: and judging whether the submersible pump 1 breaks down, if so, giving a fault alarm to the submersible pump, turning on the submersible pump 2, and if not, judging whether the submersible pump 2 breaks down. If the No. 2 submersible pump breaks down, the No. 1 submersible pump is turned on after the submersible pump is early warned. If the No. 2 submersible pump has no fault, returning to the initial step of the program, and continuing normal operation of the No. 2 submersible pump. In the process, when the No. 1 submersible pump is started to work after a fault occurs, the No. 2 submersible pump is judged to have a fault subsequently, the fact that the No. 2 submersible pump has a fault indicates that the No. 1 and the No. 2 submersible pumps have faults is judged, at the moment, whether the No. 3 submersible pump has a fault is judged, if the No. 2 submersible pump has a fault, an alarm is given, all opened valves are closed, the regulating reservoir alarm subprogram is exited, otherwise, the procedure initial step is returned, and the No. 3 submersible pump continues to normally operate.
After the concentrated mud is discharged into the concentration tank according to the above process, the concentration tank discharges the sewage, and the specific process is shown in fig. 3.
And b1, detecting the sludge concentration in the concentration tanks at regular time, and detecting the concentrations of the two concentration tanks in turn every 5 hours.
And b2, judging whether the liquid level of the homogenizing pool exceeds the upper limit of the standard line, if so, executing warning of the homogenizing pool, otherwise, opening an outlet valve of the No. 1 concentration pool (MV 201 in figure 10). The specific steps of the homogenization tank alarm are shown in fig. 5.
And b3, judging whether 10 minutes have been reached after the valve No. 3 (MV 203 in fig. 10) is opened, if so, detecting whether the water content exceeds 95 percent, otherwise, continuously counting until 10 minutes are reached. And when the water content reaches 10 minutes and the water content is detected to exceed 95%, closing the No. 3 valve (MV 203 in figure 10), and if the water content is not detected to exceed 95%, controlling the sludge discharge regulating tank to discharge the sewage, and starting sludge dewatering, namely starting sludge discharge of the concentration tank.
And b4, detecting whether the water content exceeds 96% after sludge discharge, if so, closing the No. 3 valve (MV 203 in figure 10), and if not, continuing to control the sludge discharge adjusting tank to discharge sludge, starting sludge dewatering, and continuing to discharge sludge in the concentration tank.
The liquid preparation flow of the liquid preparation system of the present invention is shown in fig. 6.
And c1, starting a liquid preparation program.
And c2, judging whether the liquid level of the solution pool No. 1 reaches the lower limit, if so, executing the next step, otherwise, returning to the step 1 to continue liquid preparation.
And c3, opening a stock solution inlet valve (MV102 in figure 10) of the No. 2 solution pool, and inputting 1 unit of height stock solution. Then, the feed liquid valve (MV102 in fig. 10) of solution tank No. 2 was closed, the feed water valve was opened, and after 19 units of high-level water was added, the mixer (B102 in fig. 10) of solution tank No. 2 was opened to mix.
And c4, judging whether the liquid level of the solution pool No. 1 reaches the lower limit, if so, executing the next step, otherwise, detecting the liquid level again.
Step c5, the outlet valve of the solution tank No. 1 (MV 101 in FIG. 10) is closed, the outlet valve of the solution tank No. 2 (MV102) is opened, and the mixer of the solution tank No. 2 (JB 102 in FIG. 10) is closed.
And c6, judging whether the liquid level of the No. 2 solution pool reaches the lower limit, if so, executing the next step, and otherwise, detecting the liquid level again.
Step c7, opening the stock solution inlet valve (MV 101 in FIG. 10) of the No. 1 solution pool, and inputting the height stock solution of 1 unit. Then, the stock solution inlet valve of the solution tank No. 1 is closed, the water inlet valve is opened, 19 units of high water is added, and then the stirrer (JB 101 in FIG. 10) of the solution tank No. 1 is opened for stirring.
And c8, judging whether the liquid level of the No. 2 solution pool reaches the lower limit, if so, executing the next step, and otherwise, detecting the liquid level again.
Step c9, closing the outlet valve of the solution tank No. 2 (MV 104 in FIG. 10), opening the outlet valve of the solution tank No. 1 (MV 103 in FIG. 10), and closing the mixer of the solution tank No. 1 (JB 101 in FIG. 10).
According to the flow, the prepared liquid medicine is released into the filter press through the liquid medicine pump. The starting process of the filter press comprises the following steps:
and d1, starting the filter press.
And d2, judging whether each controlled device is quasi-operated, if so, executing the next step, otherwise, prompting that the device is not controlled and alarming, and returning to the step d 1.
And d3, judging whether the air pipe pressure is greater than or equal to 4kg, if so, starting the washing pump, otherwise, starting timing, and if the preset time is reached, alarming and returning to the step d 1.
And d4, judging whether the flushing pump has a fault, if so, giving a fault alarm, and returning to the step d1 after the operation of the flushing pump is stopped. If no fault occurs, judging whether the water pressure is greater than or equal to 4kg, if so, starting the filter press, starting the electromagnetic valve of the tensioning cylinder, delaying for 10 seconds, then starting the motor of the filter press, otherwise, starting timing, and if the preset time is reached, executing an alarm, and returning to the step d 1.
And d5, judging whether the filter press breaks down, if so, giving a fault alarm, and returning to the step d1 after the filter press stops running. And if no fault occurs, starting the coagulation device, judging whether the coagulation device has a fault, if so, giving a fault alarm, stopping the operation of the coagulation device, and returning to the step d 1. And if no fault occurs, executing time delay until the time delay reaches 10 minutes, and starting the dosing pump.
And d6, judging whether the dosing pump has a fault, if so, giving a fault alarm, and returning to the step d1 after the dosing pump stops running. And if the fault does not occur, starting the sludge pump, judging whether the fault occurs or not, if so, giving a fault alarm, stopping the operation of the sludge pump, and returning to the step d 1. If no fault occurs, judging whether the No. 1 to No. 3 filter presses are all started, if so, starting the No. 1 screw machine, otherwise, judging whether the No. 4 to No. 5 filter presses are all started, if so, starting the No. 2 screw machine and the No. 3 screw machine in sequence, otherwise, directly starting the No. 3 screw machine.
And d7, judging whether each screw machine has faults, if so, giving a fault alarm, and returning to the step d1 after the operation of the faulted screw machine is stopped. If no fault occurs, the screw machine is continuously operated to finish the starting of the filter press.
The specific process of the filter press shutdown is shown in FIG. 7.
The operational flow of the filter press after start-up is shown in FIG. 8.
And f1, executing a filter press running sub-program.
And f2, judging whether the upper filter cloth is deviated to the left, if so, carrying out left deviation correction operation on the upper filter cloth, prompting a deviation signal, canceling the deviation correction after the signal disappears for 15 seconds, and entering a step f 1. Otherwise, the next step is performed.
And f3, judging whether the upper filter cloth is inclined to the right, if so, carrying out the operation of the upper filter cloth inclined to the right, prompting a deviation signal, canceling the deviation after the signal disappears for 15 seconds, and entering a step f 1. Otherwise, the next step is performed.
And f4, judging whether the lower filter cloth is deviated to the left, if so, carrying out left correction operation on the lower filter cloth, prompting a deviation signal, canceling correction after the signal disappears for 15 seconds, and entering a step f 1. Otherwise, the next step is performed.
And f5, judging whether the lower filter cloth is inclined to the right, if so, carrying out the operation of the lower filter cloth inclined to the right, prompting a deviation signal, canceling the deviation after the signal disappears for 15 seconds, and entering a step f 1. Otherwise, the next step is performed.
Step f6, judging whether the emergency shutdown is started, if so, entering a filter press operation stopping program, and entering step f 1; otherwise, judging whether the operation fault of the filter press occurs. If a failure occurs, the failure processing routine is executed to step f 1. If no fault occurs, the next step is executed.
And f7, judging whether the automobile is changed or not, if not, opening the No. 2 screw machine, and entering the step f 1. If yes, the process proceeds to step f1 after the operation of the No. 2 screw machine is stopped.
In step f6, the concrete content of the fault processing of the lever pressing machine is as follows:
a) judging whether a relevant pump of the filter press breaks down or not, if so, stopping the filter press, opening the next filter press, and if not, judging whether the filter press breaks down or not; if the fault occurs, the filter press is stopped, and the next filter press is opened, otherwise, the next step is carried out.
b) And judging whether the air pressure is too low for 5 seconds, and if so, stopping all the filter presses and related equipment. If not, judging whether the water pressure is too low for 5 seconds, if so, stopping the filter press, and opening the next filter press, otherwise, entering the next step.
c) And judging whether the screw machine No. 1 breaks down, if so, stopping the operation of the filter presses No. 1, 2 and 3, otherwise, judging whether the screw machine No. 2 breaks down, if so, stopping the operation of the filter presses No. 4, 5 and 5, otherwise, judging whether the screw machine No. 3 breaks down, and if so, stopping all the filter presses and related equipment.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a water plant sludge dewatering automatic control system which characterized in that includes:
the automatic control PLC system is used for acquiring state signals of all field devices in the sludge dewatering system and controlling corresponding switches, processing the acquired state signals and then sending the processed state signals to an upper computer, and meanwhile, executing logic judgment and processing according to the acquired state signals;
the sludge dewatering system executes a control instruction sent by the automatic control PLC system to integrally complete the processes of sludge flocculation, concentration and dewatering;
the industrial control network provides a data transmission channel between the automatic control PLC system and the upper computer, in front of the automatic control PLC system and the alarm system and in front of the automatic control PLC system and the sludge dewatering system,
the upper computer is used for acquiring a state signal sent by the automatic control PLC system and acquiring the running state of the sludge dewatering machine;
and the alarm system is in wireless connection with the automatic control PLC system and is used for alarming the fault problem of the sludge dewatering system judged by the automatic control PLC system.
2. The automatic control system for the sludge dewatering of the water plant according to claim 1, wherein the sludge dewatering system comprises a regulating tank, a concentration tank, a homogenization tank, a filter press equipment set and a liquid distribution system, sewage in the regulating tank is pumped into the concentration tank through a submersible pump, a concentrator is installed in the concentration tank, a concentration meter for measuring the concentration of the sludge is arranged between the concentration tank and the homogenization tank, and the filter press equipment set separates mud and water in the sludge under the action of the liquid distribution system and generates dry mud through the extrusion of filter cloth.
3. The automatic control system for the dehydration of the sludge in the water plant according to claim 2, wherein the sludge dehydration system is provided with six sets of filter press equipment sets and one set of liquid preparation system.
4. The automatic control system for sludge dewatering in water plant according to claim 3, characterized in that the filter press equipment group comprises a submersible pump, a flushing pump, a medicine liquid pump, pneumatic valves corresponding to the pumps, a coagulation device and a filter press.
5. The automatic control system for sludge dewatering in water plant according to claim 4, characterized in that the sewage in the adjusting tank is pumped into two concentration tanks by four submersible pumps.
6. The automatic control system for sludge dewatering in water plant according to claim 3, wherein the liquid preparation system comprises a stock solution tank and two liquid medicine tanks, the stock solution tank stores stock solution, liquid preparation is carried out in the liquid medicine tanks, each liquid medicine tank is provided with a respective stirrer, and prepared liquid medicine is released into the filter press through the liquid medicine pump.
7. The automatic control system for sludge dewatering in water plant according to claim 2, characterized in that production sewage of water plant is discharged into the adjusting tank through a special pipeline in a centralized manner, sewage of the adjusting tank is pumped into the concentration tank through a submersible pump, a thickener is installed in the concentration tank, under the action of the thickener, sludge is precipitated to the outlet of the pipeline at the bottom of the concentration tank, clear water rises to the surface of the concentration tank, the sludge concentration at the bottom of the concentration tank is gradually increased through the precipitation action for a certain time, after the sludge concentration at the bottom of the tank reaches a certain value, the sludge discharge level of the concentration tank is slightly lower than that of the homogenization tank of the concentration tank through the natural gravity action, and after the sludge concentration in the homogenization tank reaches a certain height, equipment of dewatering machine room is started for sludge treatment.
8. The automatic control system for sludge dewatering in water plant according to claim 5,
the automatic control PLC system executes alarm operation by judging whether the liquid level of the regulating reservoir exceeds a lower limit, starts the dispensing system if alarm occurs, sequentially judges whether each submersible pump sends a fault, executes alarm operation on the submersible pump with the fault, and starts the other submersible pump.
9. The automatic control system for sludge dewatering in water plant according to claim 5, characterized in that the automatic control PLC system performs an alarm operation by judging whether the liquid level of the homogenization tank exceeds the upper limit, and if the alarm occurs, the other concentration tank is started.
10. The automatic control system for sludge dewatering in water plant according to claim 5, characterized in that the automatic control PLC system detects whether the water content exceeds the threshold value after sludge discharge, and executes to close the valves of the thickening tank, if so, close the corresponding valves, if not, then continue to control the adjusting tank to discharge sewage, start sludge dewatering, and continue sludge discharge in the thickening tank.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113908598A (en) * | 2021-10-21 | 2022-01-11 | 象山德曼机械有限公司 | Concentration and dehydration integrated equipment and concentration and dehydration method |
| AT525418A1 (en) * | 2021-06-18 | 2023-02-15 | Andritz Ag Maschf | METHOD OF ADJUSTMENT OF A FLOCKING AGENT TO A SLUDGE |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355453A (en) * | 2014-11-17 | 2015-02-18 | 青岛嘉华环境工程有限公司 | Full-automatic control system and method for water purification plant |
| CN105417660A (en) * | 2015-12-28 | 2016-03-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Treatment method and device for waterworks production wastewater |
| CN209348187U (en) * | 2018-12-27 | 2019-09-06 | 贵州中车绿色环保有限公司 | A kind of processing system of Plant Sludge waste water |
| KR102087622B1 (en) * | 2019-03-29 | 2020-04-23 | 주식회사 경우크린텍 | Batch reactor and control method thereof |
| CN111635100A (en) * | 2020-05-29 | 2020-09-08 | 深圳市深水宝安水务集团有限公司 | Tap water plant wastewater treatment system and treatment method |
-
2021
- 2021-02-25 CN CN202110212817.5A patent/CN112979126A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355453A (en) * | 2014-11-17 | 2015-02-18 | 青岛嘉华环境工程有限公司 | Full-automatic control system and method for water purification plant |
| CN105417660A (en) * | 2015-12-28 | 2016-03-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Treatment method and device for waterworks production wastewater |
| CN209348187U (en) * | 2018-12-27 | 2019-09-06 | 贵州中车绿色环保有限公司 | A kind of processing system of Plant Sludge waste water |
| KR102087622B1 (en) * | 2019-03-29 | 2020-04-23 | 주식회사 경우크린텍 | Batch reactor and control method thereof |
| CN111635100A (en) * | 2020-05-29 | 2020-09-08 | 深圳市深水宝安水务集团有限公司 | Tap water plant wastewater treatment system and treatment method |
Non-Patent Citations (1)
| Title |
|---|
| 陶伟峰: "苏州新区水厂污泥脱水处理自控系统简析", 《给水排水》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT525418A1 (en) * | 2021-06-18 | 2023-02-15 | Andritz Ag Maschf | METHOD OF ADJUSTMENT OF A FLOCKING AGENT TO A SLUDGE |
| AT525418B1 (en) * | 2021-06-18 | 2023-07-15 | Andritz Ag Maschf | PROCEDURE FOR CONTROLLING THE ADDITION OF A FLOCKING AGENT TO A SLUDGE |
| CN113908598A (en) * | 2021-10-21 | 2022-01-11 | 象山德曼机械有限公司 | Concentration and dehydration integrated equipment and concentration and dehydration method |
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