CN115611495A - Sludge conditioning, filter-pressing and dehydrating process and filter-pressing and dehydrating system thereof - Google Patents
Sludge conditioning, filter-pressing and dehydrating process and filter-pressing and dehydrating system thereof Download PDFInfo
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- CN115611495A CN115611495A CN202211227850.6A CN202211227850A CN115611495A CN 115611495 A CN115611495 A CN 115611495A CN 202211227850 A CN202211227850 A CN 202211227850A CN 115611495 A CN115611495 A CN 115611495A
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- 239000010802 sludge Substances 0.000 title claims abstract description 139
- 230000003750 conditioning effect Effects 0.000 title claims abstract description 126
- 238000003825 pressing Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 137
- 238000003756 stirring Methods 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims description 29
- 239000000706 filtrate Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000003814 drug Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 11
- 230000001143 conditioned effect Effects 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 238000011085 pressure filtration Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 210000003454 tympanic membrane Anatomy 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 241000208967 Polygala cruciata Species 0.000 claims 1
- 208000005156 Dehydration Diseases 0.000 description 5
- 230000008676 import Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/164—Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a sludge conditioning, filter-pressing and dehydrating process and a filter-pressing and dehydrating system thereof, comprising: the sludge stirring and storing tank is connected with the filter press, the conditioner dissolving water tank is connected with the filter press, the sludge stirring and storing tank and the conditioner dissolving water tank are both connected to a feeding pump of the filter press, and the feeding pump of the filter press is connected with the filter press; the invention provides a method for directly conditioning and modifying mud cakes in a filter plate chamber of a filter press, which can be used for accurately conditioning the mud cakes in the filter plate chamber of the filter press, conditioning the mud cakes by giving enough conditioning liquid, ensuring the conditioning effect of sludge and reducing the water content of the treated mud cakes.
Description
Technical Field
The invention relates to sludge dewatering equipment and the related technical field thereof, in particular to a sludge conditioning, filter-pressing and dewatering process and a filter-pressing and dewatering system thereof.
Background
In the industries of sludge treatment and the like, sludge is generally conditioned by using a chemical conditioning method, microbial cells in the sludge are subjected to wall breaking, water in the cells is released to form free water, and the moisture content of sludge cakes can be greatly reduced only by performing plate-and-frame filter pressing on the conditioned sludge; therefore, in the sludge conditioning process, various methods and corresponding dosing devices or complete dosing systems are needed; so that the sludge and the medicament are fully and uniformly mixed to achieve the purpose of fully conditioning. And (3) the sludge conditioned by the medicament enters a filter press to be subjected to diaphragm filter pressing, and finally the sludge forms a sludge cake in a filter pressing chamber.
The existing sludge conditioning and filter pressing process method and the flow are detailed in figure 2, and the specific process method and the flow are as follows: conveying a proper amount of sludge into a sludge stirring and conditioning storage tank through a sludge conveying pump, conveying a conditioning agent into the sludge stirring and conditioning storage tank through an agent conveying pump, and fully and uniformly stirring the agent and the sludge in the sludge stirring and conditioning storage tank through a self-contained stirrer to achieve the purpose of fully conditioning; then conveying the conditioned sludge into a filter press feeding chamber through a filter press feeding pump, and discharging filtrate into a drainage ditch through a filter plate water filtering channel and a pipeline by penetrating through filter cloth; then, water in the squeezing water tank is conveyed into a diaphragm chamber of a filter press through a squeezing pump to perform tympanic membrane, so that the water in the mud cake is further squeezed, and the water content of the mud cake is reduced; and finally, opening a squeezed water backflow pneumatic valve, squeezing a water backflow water tank, opening a filter plate of the filter press, and dropping the mud cake.
The process method and the flow have the following defects: 1. the method is characterized in that the adding amount of the medicament is difficult to accurately control due to the fluctuation of the original sludge concentration at any moment, the conditions of excessive adding or insufficient adding and the like are easy to occur, the excessive adding of the conditioning medicament causes medicament waste, the production and operation cost is too high, and the treatment of filtrate water is difficult; the phenomenon that the sludge is not conditioned in place easily due to insufficient addition of a conditioner, the water content of the sludge is too high after filter pressing and the like; 2. the dosage of the medicament cannot be timely adjusted in place due to the fluctuation of the original sludge concentration at any moment; the requirements on the skill and responsibility of field operators are high; the degree of automation is not high. Therefore, the invention relates to a sludge conditioning, filter-pressing and dehydrating process and a filter-pressing and dehydrating system thereof.
Disclosure of Invention
In order to solve the problems, the invention provides a sludge conditioning, filter-pressing and dehydrating process and a filter-pressing and dehydrating system thereof, which aim to more exactly solve the problems that the precise control of conditioning agents is realized in the sludge conditioning process, the conditioning effect is optimal, and the water content of filter-pressing mud cakes can be reduced to the minimum; the conditioning effect can be completely prevented from being influenced by the skill factors of the operator; the difficulty of sludge conditioning operation is reduced, and the intellectualization of the sludge conditioning process is realized; the concentration of the sludge conditioner is detected on line, so that the accurate controllability of the concentration of the sludge conditioner can be realized; the optimal sludge conditioning effect is ensured; meanwhile, the water for dissolving the conditioner can be continuously recycled, so that water resources are saved to the maximum extent, and the cost is reduced.
The invention is realized by the following technical scheme:
the invention provides a sludge conditioning, filter pressing and dewatering system, which comprises: the sludge stirring and storing tank is connected with the filter press, the conditioner dissolving water tank is connected with the filter press, the sludge stirring and storing tank and the conditioner dissolving water tank are both connected to a feed pump of the filter press, and the feed pump of the filter press is connected with the filter press;
the filter press comprises a filter press, and is characterized in that a conditioner dissolving water tank is provided with a conditioner concentration detector and an automatic conditioner adding device, a conditioner outlet end and a conditioner backflow end are further arranged on the conditioner solvent water tank, the conditioner outlet end is connected with a feed pump of the filter press, and the conditioner backflow end is connected with a water outlet of the filter press.
Further, the sludge conditioning, filter pressing and dewatering system is characterized in that a sludge inlet and a sludge outlet are formed in the sludge stirring and storing tank, the sludge inlet is formed in the upper end of the sludge stirring and storing tank, the sludge inlet is connected with the sludge delivery pump, the sludge outlet is formed in the lower end of the sludge stirring tank, and the sludge outlet is connected with the filter press feed pump.
Further, the sludge conditioning, filter pressing and dewatering system is characterized in that a sludge outlet is communicated with a conditioner outlet end and is connected to a filter press feeding pump together, and a storage tank outlet pneumatic valve is arranged between a sludge inlet and the filter press feeding pump.
Further, sludge conditioning filter-pressing dewatering system, the delivery port of pressure filter passes through the tube coupling drainage ditch, the pressure filter delivery port with be equipped with filtrating emission pneumatic valve between the drainage ditch, conditioner backward flow end intercommunication the pressure filter delivery port with pipeline between the drainage ditch, just be equipped with conditioning liquid backward flow pneumatic valve between the pipeline between conditioner backward flow end and pressure filter delivery port and the drainage ditch.
Further, the sludge conditioning, filter pressing and dewatering system is characterized in that the presser is also connected with a pressing water tank.
Further, sludge conditioning filter-pressing dewatering system, it is equipped with the water tank export to squeeze the water tank lower extreme, it is equipped with the water tank import to squeeze the water tank upper end, the water tank exit linkage squeezes the water pump, and the other end that squeezes the water pump is connected the squeezer, the water tank import is still connected squeeze the water pump with between the squeezer, the water tank import goes out and is equipped with and squeezes the water backward flow pneumatic valve.
A sludge conditioning, pressure filtration and dehydration process comprises the following steps:
conveying a proper amount of sludge into a sludge stirring storage tank through a sludge conveying pump, conveying raw sludge into a filter press feeding chamber through a filter press feeding pump, discharging filtrate to a drainage ditch through a filter plate water filtering channel and a pipeline by filter cloth, and forming sludge cakes in the chambers between the filter plates by the sludge;
closing the filtrate discharge pneumatic valve and opening the conditioning fluid reflux pneumatic valve; meanwhile, closing the pneumatic valve at the outlet of the storage tank and opening the pneumatic valve at the outlet of the conditioning medicine box; the conditioning liquid is input into a chamber of a filter plate of a filter press by a feed pump of the filter press to condition and modify mud cakes, and the conditioning liquid which does not participate in conditioning and modification flows back to a conditioning agent dissolving water tank through filter cloth, a filter plate water filtering channel and a pipeline; the mud cake is fully conditioned and modified by continuous circulation of the conditioning liquid;
after conditioning is finished, conveying water in the squeezing water tank into a diaphragm chamber of a filter press through a squeezing pump to perform drum bulging, further squeezing water in the mud cake, and reducing the water content of the mud cake; and finally, opening a squeezed water backflow pneumatic valve, squeezing a water backflow water tank, opening a filter plate of the filter press, and dropping the mud cake.
Further, the sludge conditioning, filter pressing and dewatering process comprises the following steps of conveying raw sludge into a filter press feeding chamber through a filter press feeding pump:
the pneumatic valve at the outlet of the storage tank is opened, and the pneumatic valve at the outlet of the conditioning medicine box is closed.
Further, the sludge conditioning, filter pressing and dewatering process, wherein the filtrate is discharged to a drainage ditch through a filter cloth, a filter plate water filtering channel and a pipeline, and sludge forms a mud cake in a cavity between the filter plates, comprises the following steps:
the filtrate discharge pneumatic valve is in an opening state, and the conditioning fluid backflow pneumatic valve is in a closing state.
Further, the sludge conditioning, filter pressing and dewatering process includes the steps of conveying water in the pressing water tank into a diaphragm chamber of the filter pressing machine through a pressing pump to perform tympanic membrane, further pressing water in the mud cake, and reducing the water content of the mud cake, and further includes:
the related pneumatic valve is recovered, the conditioning medicine box outlet pneumatic valve is closed, the storage tank outlet pneumatic valve is opened, the conditioning liquid backflow pneumatic valve is closed, and the conditioning liquid backflow pneumatic valve is opened.
The invention has the beneficial effects that:
the concentration value of the conditioning solution is monitored in real time through a concentration detector of the conditioning solution on a dissolving water tank of the conditioning agent, the concentration of the conditioning solution is reduced when the conditioning solution is continuously consumed in the actual use process, if the concentration of the conditioning solution is lower than a certain value, an automatic conditioning agent adding device is automatically started, and the solid conditioning agent is added into the dissolving water tank to be uniformly stirred so as to improve the concentration of the conditioning solution; the intelligent control of the concentration of the conditioning solution is realized;
the invention provides a method for directly conditioning and modifying mud cakes in a filter plate chamber of a filter press, which can be used for accurately conditioning the mud cakes in the filter plate chamber of the filter press, and providing enough conditioning liquid for conditioning the mud cakes, thereby ensuring the conditioning effect of sludge, reducing the water content of the treated mud cakes, and simultaneously, returning the excessive conditioning liquid to a conditioner dissolving water tank through a filter cloth through a filter plate water filtering channel and a pipeline; therefore, the sludge conditioning effect is not good due to the fact that insufficient conditioning agents do not exist, and the excessive conditioning liquid is not discharged to a drainage ditch along with the filtrate directly, so that the agent cost is too high, and the production cost is too high;
the invention realizes the recycling of the sludge conditioner through the pipeline structure, only consumes the conditioner in the whole process, does not consume water for dissolving the conditioner, and saves water resources to the maximum extent.
Drawings
FIG. 1 is a schematic view of a connection structure of a sludge conditioning, filter-pressing and dewatering system according to the present invention;
FIG. 2 is a schematic flow diagram of the sludge conditioning, filter pressing and dewatering process of the present invention;
FIG. 3 is a schematic diagram of a sludge conditioning and pressure filtration process and flow in the prior art
In the figure, 1, a sludge delivery pump, 2, a sludge stirring storage tank, 3, a storage tank outlet pneumatic valve, 4, a filter press feed pump, 5, a conditioning fluid backflow pneumatic valve, 6, a filtrate discharge pneumatic valve, 7, a filter press, 8, a conditioning agent concentration detector, 9, a conditioning agent automatic feeding device, 10, a conditioning agent box outlet pneumatic valve, 11, a conditioning agent dissolving water tank, 12, a drainage ditch, 13, a squeezing water pump, 14, a squeezing water tank, 15, a squeezing water backflow pneumatic valve.
Detailed Description
In order to more clearly and completely describe the technical scheme of the invention, the invention is further described with reference to the accompanying drawings.
Referring to fig. 1-2, the present invention provides a sludge conditioning filter-pressing dehydration process and a filter-pressing dehydration system thereof;
in this embodiment, a sludge conditioning, filter-pressing and dewatering system includes: the sludge stirring and storing tank 2, the conditioner dissolving water tank 11 and the filter press 7, wherein the sludge stirring and storing tank 2 is connected with the filter press 7, the conditioner dissolving water tank 11 is connected with the filter press 7, the sludge stirring and storing tank 2 and the conditioner dissolving water tank 11 are both connected to a filter press feed pump 4, and the filter press feed pump 4 is connected with the filter press 7;
the filter press is characterized in that a conditioner concentration detector 8 and an automatic conditioner adding device 9 are arranged on the conditioner dissolving water tank 11, a conditioner outlet end and a conditioner backflow end are further arranged on the conditioner solvent water tank, the conditioner outlet end is connected with the filter press feeding pump 4, and the conditioner backflow end is connected with a water outlet of the filter press 7.
In this embodiment, sludge stirring holding vessel 2 is used for storing mud, and conditioner dissolving water tank 11 is used for preparing the conditioning fluid, and pressure filter 7 is used for carrying out dehydration to mud, and the last conditioner concentration detector 8 that sets up of conditioner dissolving water tank 11 is used for the conditioning fluid concentration in real-time supervision conditioner dissolving water tank 11, and automatic feeder 9 of conditioner is used for adding solid-state conditioner and stirs the concentration that improves the conditioning fluid in adding conditioner dissolving water tank 11, realizes the intelligent control of conditioning fluid concentration.
In specific implementation, the sludge stirring storage tank 2 is connected with the filter press 7 through a filter press feed pump 4, the filter press feed pump 4 provides power for sludge to enter the filter press 7 from the stirring storage tank, the conditioner outlet end of the conditioner dissolving water tank 11 is also connected with the filter press 7 through the filter press feed pump 4, the filter press feed pump 4 is used for inputting conditioning liquid into the filter press 7 to condition and modify mud cakes, during dehydration treatment, sludge is firstly sent into the filter press 7 through the filter press feed pump 4 to be filter-pressed into mud cakes, then the conditioning liquid is sent into the filter press 7 through the filter press feed pump 4 to condition and modify the mud cakes, during preparation of the conditioning liquid, the concentration of the conditioning liquid in the conditioner dissolving water tank 11 is detected through a conditioner concentration detector 8, when the concentration is insufficient, a solid conditioner is added into the conditioner dissolving water tank 11 through an automatic conditioner adding device 9, stirring is carried out uniformly, and after the preset concentration is reached, the prepared conditioning liquid is input into the filter press 7 through the filter press feed pump 4; in addition, the filter press 7 adopted in this embodiment is a conventional filter press 7, and the filter cloth, the filter plate, the chamber, and the like arranged inside the filter press are all conventional structures, which are not described in detail in structure.
In one embodiment, the sludge stirring storage tank 2 is provided with a sludge inlet and a sludge outlet, the sludge inlet is arranged at the upper end of the sludge stirring storage tank, the sludge inlet is connected with the sludge delivery pump 1, the sludge outlet is arranged at the lower end of the sludge stirring tank, and the sludge outlet is connected with the filter press feeding pump 4.
In one embodiment, the sludge outlet is communicated with the conditioner outlet end and is commonly connected to the filter press feeding pump 4, a storage tank outlet pneumatic valve 3 is arranged between the sludge inlet and the filter press feeding pump 4, the storage tank outlet pneumatic valve 3 controls the conveying of the sludge, the storage tank outlet pneumatic valve 3 is closed in the conveying process of the conditioning liquid, and the storage tank outlet pneumatic valve 3 is opened in the conveying process of the sludge.
In one embodiment, the water outlet of the filter press 7 is connected with a drainage ditch 12 through a pipeline, a filtrate discharge pneumatic valve 6 is arranged between the water outlet of the filter press 7 and the drainage ditch 12, the conditioner backflow end is communicated with the pipeline between the water outlet of the filter press 7 and the drainage ditch 12, and a conditioner backflow pneumatic valve 5 is arranged between the conditioner backflow end and the pipeline between the water outlet of the filter press 7 and the drainage ditch 12.
In specific implementation, a water outlet of the filter press 7 is communicated with a backflow end of a conditioner to realize backflow of the conditioner, in one embodiment, the conditioner is conditioned by closing a filtrate discharge pneumatic valve 6, opening a conditioner backflow pneumatic valve 5, conveying the conditioner from a conditioner outlet end to the filter press 7 by a filter press feed pump 4 to condition and modify a mud cake, and when part of the conditioner mixed with the mud cake or the conditioner diluted by the mud cake flows to the outlet end of the filter press 7 through a filter cloth and finally flows back to the backflow end of the conditioner, the concentration of the refluxed conditioner is reduced, and along with the recycling of the conditioner, when the concentration of the conditioner is reduced to be below a preset value, the conditioner automatic feeding device 9 feeds a solid conditioner into a conditioner dissolving water tank 11 and uniformly stirs the conditioner, and after the concentration of the conditioner is increased, the circulating liquid continuously enters the filter press 7 until the modification of the mud cake in the filter press 7 is completed.
In one embodiment, the press is further connected to a press water tank 14; the lower end of the squeezing water tank 14 is provided with a water tank outlet, the upper end of the squeezing water tank 14 is provided with a water tank inlet, the water tank outlet is connected with a squeezing water pump 13, the other end of the squeezing water pump 13 is connected with the squeezer, the water tank inlet is further connected between the squeezing water pump 13 and the squeezer, and a squeezing water backflow pneumatic valve 15 is arranged at the water tank inlet.
In one embodiment, a specific sludge conditioning press filtration dewatering process comprises:
in the first stage (sludge inlet stage), a proper amount of sludge is conveyed into a sludge stirring storage tank 2 through a sludge conveying pump 1, raw sludge is conveyed into a feeding chamber of a filter press 7 through a filter press feeding pump 4 (a storage tank outlet pneumatic valve 3 is opened, a conditioning medicine box outlet pneumatic valve 10 is closed), filtrate is discharged to a drainage ditch 12 through a filter plate water filtering channel through a pipeline (a filtrate discharge pneumatic valve 6 is in an open state, a conditioning liquid reflux pneumatic valve 5 is in a closed state), and sludge forms a mud cake in a chamber between filter plates;
in the second stage (conditioning stage), closing the filtrate discharge pneumatic valve 6 and opening the conditioning liquid reflux pneumatic valve 5; meanwhile, the pneumatic valve 3 at the outlet of the storage tank is closed, and the pneumatic valve 10 at the outlet of the conditioning medicine box is opened; the conditioning liquid is input into a filter plate chamber of a filter press 7 through a filter press feed pump 4, the mud cake is conditioned and modified, and the conditioning liquid which does not participate in conditioning and modification flows back to a conditioner dissolving water tank 11 through a filter cloth, a filter plate water filtering channel and a pipeline; the mud cake is fully conditioned and modified by continuous circulation of the conditioning liquid; after the conditioning stage is finished, the related pneumatic valves are restored to the original state (the conditioning medicine box outlet pneumatic valve 10 is closed, the storage tank outlet pneumatic valve 3 is opened, the conditioning liquid reflux pneumatic valve 5 is closed, and the conditioning liquid reflux pneumatic valve 5 is opened);
in the third stage (squeezing stage), water in the squeezing water tank 14 is conveyed into a diaphragm chamber of the filter press 7 through a squeezing pump to perform drum bulging, so that water in the mud cake is further squeezed, and the water content of the mud cake is reduced; and finally, opening a pressed water backflow pneumatic valve 15, pressing a water backflow water tank, opening the filter plate by the filter press 7, and dropping the mud cake.
Of course, the present invention may have other embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative effort, and all of them are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a sludge conditioning filter-pressing dewatering system which characterized in that includes: the sludge stirring and storing tank is connected with the filter press, the conditioner dissolving water tank is connected with the filter press, the sludge stirring and storing tank and the conditioner dissolving water tank are both connected to a feed pump of the filter press, and the feed pump of the filter press is connected with the filter press;
the filter press comprises a filter press, and is characterized in that a conditioner dissolving water tank is provided with a conditioner concentration detector and an automatic conditioner adding device, a conditioner outlet end and a conditioner backflow end are further arranged on the conditioner solvent water tank, the conditioner outlet end is connected with a feed pump of the filter press, and the conditioner backflow end is connected with a water outlet of the filter press.
2. The system according to claim 1, wherein a sludge inlet and a sludge outlet are arranged on the sludge stirring storage tank, the sludge inlet is arranged at the upper end of the sludge stirring storage tank, the sludge inlet is connected with a sludge delivery pump, the sludge outlet is arranged at the lower end of the sludge stirring tank, and the sludge outlet is connected with the filter press feed pump.
3. The sludge conditioning, filter pressing and dewatering system according to claim 2, wherein the sludge outlet is in communication with the conditioner outlet port and is commonly connected to the filter press feed pump, and a storage tank outlet pneumatic valve is provided between the sludge inlet and the filter press feed pump.
4. The sludge conditioning, filter pressing and dewatering system according to claim 1, wherein a water outlet of the filter press is connected with a drainage ditch through a pipeline, a filtrate discharge pneumatic valve is arranged between the water outlet of the filter press and the drainage ditch, the conditioner backflow end is communicated with the pipeline between the water outlet of the filter press and the drainage ditch, and a conditioner backflow pneumatic valve is arranged between the conditioner backflow end and the pipeline between the water outlet of the filter press and the drainage ditch.
5. The sludge conditioning, press filtration and dewatering system according to claim 1, wherein the press is further connected to a press water tank.
6. The system according to claim 5, wherein a water tank outlet is arranged at the lower end of the pressing water tank, a water tank inlet is arranged at the upper end of the pressing water tank, the water tank outlet is connected with a pressing water pump, the other end of the pressing water pump is connected with the presser, the water tank inlet is further connected between the pressing water pump and the presser, and a pressing water backflow pneumatic valve is arranged at the water tank inlet.
7. A sludge conditioning, pressure filtration and dehydration process is characterized by comprising the following steps:
conveying a proper amount of sludge into a sludge stirring storage tank through a sludge conveying pump, conveying raw sludge into a filter press feeding chamber through a filter press feeding pump, discharging filtrate to a drainage ditch through a filter plate water filtering channel through a pipeline by penetrating filter cloth, and forming sludge cakes in chambers among filter plates by sludge;
closing the filtrate discharge pneumatic valve and opening the conditioning fluid reflux pneumatic valve; meanwhile, closing the pneumatic valve at the outlet of the storage tank, and opening the pneumatic valve at the outlet of the conditioning medicine box; the conditioning liquid is input into a chamber of a filter plate of a filter press by a feed pump of the filter press to condition and modify mud cakes, and the conditioning liquid which does not participate in conditioning and modification flows back to a conditioning agent dissolving water tank through filter cloth, a filter plate water filtering channel and a pipeline; the mud cake is fully conditioned and modified by continuous circulation of the conditioning liquid;
after conditioning is finished, water in the squeezing water tank is conveyed into a diaphragm chamber of a filter press through a squeezing pump to perform tympanic membrane, so that water in the mud cake is further squeezed, and the water content of the mud cake is reduced; and finally, opening a pressed water backflow pneumatic valve, pressing a water backflow water tank, opening a filter plate by the filter press, and dropping the mud cake.
8. The sludge conditioning press filtration dewatering process according to claim 7, wherein in the step of transporting raw sludge into the press filter feed chamber by the press filter feed pump, comprising:
the pneumatic valve at the outlet of the storage tank is opened, and the pneumatic valve at the outlet of the conditioning medicine box is closed.
9. The sludge conditioning, filter-pressing and dewatering process according to claim 7, wherein in the step of discharging the filtrate through the filter cloth to a drainage ditch through a pipeline through a filter plate water-filtering channel, the sludge forms a sludge cake in a chamber between the filter plates, the process comprises:
the filtrate discharge pneumatic valve is in an opening state, and the conditioning fluid backflow pneumatic valve is in a closing state.
10. The process of sludge conditioning, press filtration and dehydration according to claim 7, wherein before the step of conveying water in the press water tank into the diaphragm chamber of the press filter by the press pump for drumhead to further press water in the mud cake and reduce the water content of the mud cake, the process further comprises:
so that the related pneumatic valve is restored to the original state, the pneumatic valve at the outlet of the conditioning medicine box is closed, the pneumatic valve at the outlet of the storage tank is opened, the conditioning liquid backflow pneumatic valve is closed, and the conditioning liquid backflow pneumatic valve is opened.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211227850.6A CN115611495A (en) | 2022-10-09 | 2022-10-09 | Sludge conditioning, filter-pressing and dehydrating process and filter-pressing and dehydrating system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211227850.6A CN115611495A (en) | 2022-10-09 | 2022-10-09 | Sludge conditioning, filter-pressing and dehydrating process and filter-pressing and dehydrating system thereof |
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| CN115611495A true CN115611495A (en) | 2023-01-17 |
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| US9138668B2 (en) * | 2010-02-19 | 2015-09-22 | Daniel J. Simpson | Dewatering of drilling mud using a filter press |
| KR102271270B1 (en) * | 2020-11-24 | 2021-07-01 | 주식회사 에코셋 | Filter press apparatus being able to adjust dewatering efficiency and method for controlling the same |
| CN218811297U (en) * | 2022-10-09 | 2023-04-07 | 深圳包清天环保有限公司 | Sludge conditioning, filter-pressing and dewatering system |
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2022
- 2022-10-09 CN CN202211227850.6A patent/CN115611495A/en active Pending
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| US9138668B2 (en) * | 2010-02-19 | 2015-09-22 | Daniel J. Simpson | Dewatering of drilling mud using a filter press |
| CN204022639U (en) * | 2014-08-01 | 2014-12-17 | 上海复洁环保科技有限公司 | Cryogenic vacuum dehydration and drying automatic feed system |
| KR102271270B1 (en) * | 2020-11-24 | 2021-07-01 | 주식회사 에코셋 | Filter press apparatus being able to adjust dewatering efficiency and method for controlling the same |
| CN218811297U (en) * | 2022-10-09 | 2023-04-07 | 深圳包清天环保有限公司 | Sludge conditioning, filter-pressing and dewatering system |
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