CN103550966B - A kind of method of operating of diaphragm filter press - Google Patents
A kind of method of operating of diaphragm filter press Download PDFInfo
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- CN103550966B CN103550966B CN201310530086.4A CN201310530086A CN103550966B CN 103550966 B CN103550966 B CN 103550966B CN 201310530086 A CN201310530086 A CN 201310530086A CN 103550966 B CN103550966 B CN 103550966B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000004744 fabric Substances 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 235000012970 cakes Nutrition 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 5
- 210000000188 Diaphragm Anatomy 0.000 description 32
- 239000010802 sludge Substances 0.000 description 19
- 238000011010 flushing procedure Methods 0.000 description 18
- 238000007906 compression Methods 0.000 description 11
- 230000003750 conditioning Effects 0.000 description 10
- 239000000706 filtrate Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000002000 scavenging Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 210000004940 Nucleus Anatomy 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses a kind of method of operating of diaphragm filter press, comprise the following steps: A, filter plate compress, from central feed channel to charging filter plate; After B, charging terminate, open pressure-air and carry out first time blowback to central feed channel: after C, first time blowback terminate, startup squeezing water pump injects squeeze water and squeezes in filter plate; D, maintenance squeeze water pressure, open pressure-air and carry out second time blowback to central feed channel; After E, second time blowback terminate, close pressure-air and squeezing water pump, the squeeze water in backflow filter plate; F, unclamp filter plate, discharging, cleaning filter cloth.Advantage of the present invention is: during blowback, diaphragm keeps the state heaved, and blowback efficiency is high, economize energy, and mud cake surface moisture content is lower, and squeezing better effects if, filter cloth easily cleans.
Description
Technical field
The invention belongs to technical field of sludge treatment, especially relate to a kind of method of operating of diaphragm filter press.
Background technology
The process of municipal sludge is disposed and is become urgent problem, but traditional sludge treatment device, as centrifuge and belt filter press etc., mud extraction moisture content can only reach about 78%.Conditioning Technology in Pressing is one of topmost technology of current municipal sludge process, and mud enters filter press process again after chemical conditioning, and moisture content can reach less than 60%, reaches the basic demand that country disposes for Sludge landfill.
Diaphragm filter press is one of nucleus equipment of sludge conditioning Technology in Pressing, and its main working process is: filter plate compression, charging, a blowback, squeezing, secondary blowback, cake discharge and cleaning filter cloth etc.Each filter plate comprises the one piece of fixed head and one piece of diaphragm that are oppositely arranged, and cavity between the two can enter mud, and the opposite side of diaphragm is provided with high-pressure intake pipe, can pass into water under high pressure and make diaphragm to fixed head Direction distortion.After filter plate compresses, pump in filter press by feed pump by the mud in conditioner, mud is introduced into central feed channel, then in each filter plate of surrounding dispersion press-in.After charging completes, carry out a blowback, conditioner is returned in mud blowback more than in central feed channel, restarts squeezing water pump, by the squeeze water of high pressure, diaphragm distortion is heaved, force filter cake thinning, thus the water extruding in filter cake is leached.Squeezing terminate after, between filter plate partial sludge be extruded in central feed channel, be no longer stressed extruding, and moisture content is still very high.Therefore need after squeezing terminates, need to carry out secondary blowback, namely by pressure-air that air compressor provides, fast the mud blowback be not squeezed in central feed channel is got back in conditioner through anti-blowpipe, avoid the mud cake squeezed in the middle of the sludge pollution filter plate of high-moisture percentage, make pipeline cleaner, prevent line clogging.
But the secondary blowback after terminating for squeezing, traditional method of operating is release blowback, i.e. blowback again after squeeze water backflow, and the diaphragm now heaved during squeezing resiles, and produces a plenum chamber between filter plate and mud cake.The secondary blowback now carried out can bring following problem: the remaining mud that the partially aqueous rate 1, in central feed channel is very high can be brought in plenum chamber by pressure-air when secondary blowback, causes moisture content of the cake to raise; 2, the remaining mud in central feed channel directly from the filter cloth of diaphragm side spray through, thus pollute filter cloth and filtrate; 3, partial high pressure air is through plenum chamber, from the ejection of pressing filtrate delivery port, and does not concentrate on central feed channel blowback, causes blowback inefficiency, waste energy.
Summary of the invention
The object of this invention is to provide a kind of effective method of operating improving squeezing effect, diaphragm filter press that efficiency is higher.
Technical solution of the present invention is: a kind of method of operating of diaphragm filter press, comprises the following steps: A, filter plate compress, from central feed channel to charging filter plate; After B, charging terminate, open pressure-air and carry out first time blowback to central feed channel: after C, first time blowback terminate, startup squeezing water pump injects squeeze water and squeezes in filter plate; D, maintenance squeeze water pressure, open pressure-air and carry out second time blowback to central feed channel; After E, second time blowback terminate, close pressure-air and squeezing water pump, the squeeze water in backflow filter plate; F, unclamp filter plate, discharging, cleaning filter cloth.
Owing to keeping the pressure of squeeze water when second time blowback, the diaphragm of filter cloth is made to keep the state heaved, overwhelming majority pressure-air can be blown over by central feed channel, improve the efficiency of blowback, and the remaining mud avoided in central feed channel enters on the mud cake in filter plate, the moisture content of mud cake reduces, and improves the effect of squeezing.
In step B, first time blowback duration is 4-10s, and blowback pressure is 0.74-0.80MPa.The consumption of pressure-air is reduced while ensureing the remaining mud of blowout fast.
Second time blowback duration in step D is 4-10s, and blowback pressure is 0.74-0.80MPa.The consumption of pressure-air is reduced while ensureing the remaining mud of blowout fast.
In step D, squeeze water pressure remains on 1.20-1.80MPa.Can ensure that enough pressure carries out squeezing and pressurize, improve the efficiency of blowback.
Advantage of the present invention is: during blowback, diaphragm keeps the state heaved, and blowback efficiency is high, economize energy, and mud cake surface moisture content is lower, and squeezing better effects if, filter cloth easily cleans.
Accompanying drawing explanation
Accompanying drawing 1 relates to the diaphragm filter press structural representation of use for the inventive method;
Accompanying drawing 2 is each stage filter plate change schematic diagram in pressure-filtering process;
1, sludge conditioning pond, 2, filter press, 3, sludge pump, 4, feed pipe, 5, inlet valve, 6, central feed channel, 7, filter plate, 8, cavity, 9, water tank is squeezed, 10, squeezing water pump, 11, squeezing water valve, 12, squeeze water return valve, 13, squeeze water water inlet pipe, 14, filtrate water leg, 15, air compression system, 16, high-pressure air tube, 17, blowback intake valve, 18, back-flushing valve, 19, anti-blowpipe, 20 diaphragms, 21, fixed head, 22, mud.
Detailed description of the invention
Embodiment 1
Consulting Fig. 1-2, is a kind of structural representation of Chamber Type Diaphragm Filter Press, the main body of filter press 2 is arranged the filter plate 7 of multiple vertical placement, and the centre of filter plate 7 is provided with central feed channel 6.Mud in sludge conditioning pond 1 is extracted out through sludge pump 3, is connected on one end of central feed channel 6 by the feed pipe 4 being provided with inlet valve 5.Every block filter plate 7 comprises the one piece of fixed head 21 and one piece of diaphragm 20 that are oppositely arranged, cavity 8 between the two can enter mud 22, the opposite side of diaphragm 20 is provided with squeeze water water inlet pipe 13, can pass into high-pressure compressing water makes diaphragm 20 to the Direction distortion of fixed head 21, thus extruding is positioned at the mud 22 of cavity 8, moisture in mud 22 is appeared by the filter cloth on diaphragm 20 surface, is pooled in filtrate water leg 14, realizes the dehydration of mud.Every block filter plate 7 is equipped with a squeeze water water inlet pipe 13, many squeeze water water inlet pipes 13 are connected in parallel on the export pipeline of squeezing water pump 10, are provided with squeezing water valve 11 and the squeeze water return valve 12 for bypass backflow thereon.The other end of central feed channel 6 connects air compression system 15 by high-pressure air tube 16, and high-pressure air tube 16 is provided with blowback intake valve 17.Be provided with the anti-blowpipe 19 communicated with sludge conditioning pond 1 in the side of the central feed channel 6 be connected with inlet valve 5, which is provided with back-flushing valve 18.
Consult Fig. 2, for the partial enlarged drawing of filter plate 7, the situation of change of filter plate 7 in charging and expressing process is described.Before charging, between diaphragm 20 and fixed head 21, be provided with cavity 8, the now non-conducting of squeeze water water inlet pipe 13; When charging, after mud 22 enters from central feed channel 6, be filled in cavity 8 from center to peripheral direction, now first time blowback only by mud blowout more than in central feed channel 6, can not affect filter plate; When starting to squeeze, send into high-pressure compressing water from squeeze water water inlet pipe 13 to diaphragm 20 side, diaphragm 20 is to fixed head 21 Direction distortion, and the mud 22 in extruding cavity, the moisture filter cloth through diaphragm 20 surface is flowed out, and mud 22 is squeezed.When squeeze water refluxes, diaphragm 20 restores to the original state, and itself and mud cake surface can produce space, if now carry out second time blowback, is easy to muddy water to be blown in this gap, cause water content to rise, and air consumption also can increases.If keep squeeze water pressure when squeezing, diaphragm 20 surface is close to mud cake on the surface, and when carrying out second time blowback, muddy water can not enter mud cake on the surface, and air consumption also can decline.
" Jing Jin " board Chamber Type Diaphragm Filter Press being XAZGFSDP400-1500-UB for the model of same structure carries out the squeezing process of mud, its filter plate number is 104, surface area is 1500 × 1500mm, squeezing handling object is the municipal sludge after chemical conditioning, and after conditioning, moisture content is 93.8%.
A method of operating for diaphragm filter press, comprises the following steps:
A, charging, open inlet valve 5, starts sludge pump 3, quantitative feeding 40.0m
3;
B, charging terminate rear closedown inlet valve 5, start air compression system 15, make compressed air pressure reach 0.78MPa, open back-flushing valve 18 and blowback intake valve 17, close back-flushing valve 18 and blowback intake valve 17 after first time blowback 7s;
C, startup squeezing water pump 10, squeeze pressure 1.40MPa, opens squeezing water valve 11, squeezing time 30min;
D, startup air compression system 15, make compressed air pressure reach 0.78MPa, open back-flushing valve 18 and blowback intake valve 17, closes back-flushing valve 18 and blowback intake valve 17 after second time blowback 10s;
E, stopping squeezing water pump 10, close squeezing water valve 11, open squeeze water return valve 12, release;
F, unclamp filter plate, discharging, cleaning filter cloth.
During second time blowback, compressed air pressure drops to 0.73MPa from 0.78MPa, mud cake dry tack free, and without obvious moisture, the average moisture content of mud cake is 54.21%; Automatically falling cake rate during discharging operations is 73.08%, and work slightly reduces, and the SS in filtrate is 421.46mg/L, and the cleaning filter cloth time is 103min.
Embodiment 2:
With the XAZGS210/1250-UF type diaphragm filter press of Shandong Zhongda-Bright Filter Press Co., Ltd. for object carries out the squeezing process of mud, the filter plate number of this machine is 76, surface area is 1250 × 1250mm, squeezing handling object is the municipal sludge after chemical conditioning, and after conditioning, moisture content is 93.0%.A method of operating for diaphragm filter press, comprises the following steps:
A, charging, open inlet valve 5, starts sludge pump 3, quantitative feeding 16.0m
3;
B, charging terminate rear closedown inlet valve 5, start air compression system 15, make compressed air pressure reach 0.77MPa, open back-flushing valve 18 and blowback intake valve 17, close back-flushing valve 18 and blowback intake valve 17 after first time blowback 5s;
C, startup squeezing water pump 10, squeeze pressure 1.50MPa, opens squeezing water valve 11, squeezing time 25min;
D, startup air compression system 15, make compressed air pressure reach 0.77MPa, open back-flushing valve 18 and blowback intake valve 17, closes back-flushing valve 18 and blowback intake valve 17 after second time blowback 7s;
E, stopping squeezing water pump 10, close squeezing water valve 11, open squeeze water return valve 12, release;
F, unclamp filter plate, discharging, cleaning filter cloth.
During second time blowback, compressed air pressure drops to 0.73MPa from 0.77MPa, mud cake dry tack free, and without obvious moisture, the average moisture content of mud cake is 53.18%; Automatically falling cake rate during discharging operations is 69.74%, and work slightly reduces, and the SS in filtrate is 383.73mg/L, and the cleaning filter cloth time is 83min.
Beneficial effect of the present invention is further illustrated below by way of comparative tests:
Comparative example 1: adopt equipment identical with embodiment 1, a kind of method of operating of diaphragm filter press, comprises the following steps:
A, charging, open inlet valve 5, starts sludge pump 3, quantitative feeding 40.0m
3;
B, charging terminate rear closedown inlet valve 5, start air compression system 15, make compressed air pressure reach 0.78MPa, open back-flushing valve 18 and blowback intake valve 17, close back-flushing valve 18 and blowback intake valve 17 after first time blowback 7s;
C, startup squeezing water pump 10, squeeze pressure 1.40MPa, opens squeezing water valve 11, and after squeezing time 30min, stopping squeezing water pump 10, cuts out squeezing water valve 11, open squeeze water return valve 12, squeeze water backflow;
D, startup air compression system 15, make compressed air pressure reach 0.78MPa, open back-flushing valve 18 and blowback intake valve 17, closes back-flushing valve 18 and blowback intake valve 17 after second time blowback 10s;
E, unclamp filter plate, discharging, cleaning filter cloth.
During second time blowback, compressed air pressure drops to 0.71MPa from 0.78MPa, and there is obvious moisture on mud cake surface, and the average moisture content of mud cake is 55.13%; Automatically falling cake rate during discharging operations is 67.03%, and the SS in filtrate is 480.62, mg/L, and the cleaning filter cloth time is 115min.
Embodiment 1 is compared with comparative example 1, and what blowback compressed air pressure declined lacks, and backflowing gas amount reduces, moisture content of the cake reduces by 0.92%, and automatically fall cake rate and improve 5.78%, the SS of pressing filtrate reduces 12.31%, illustrate that Milling Efficiencty is higher, scavenging period is corresponding shortening 10.43% also.
Comparative example 2: adopt equipment identical with embodiment 2, a kind of method of operating of diaphragm filter press, comprises the following steps:
A, charging, open inlet valve 5, starts sludge pump 3, quantitative feeding 16.0m
3;
B, charging terminate rear closedown inlet valve 5, start air compression system 15, make compressed air pressure reach 0.77MPa, open back-flushing valve 18 and blowback intake valve 17, close back-flushing valve 18 and blowback intake valve 17 after first time blowback 5s;
C, startup squeezing water pump 10, squeeze pressure 1.50MPa, opens squeezing water valve 11, squeezing time 25min, and stopping squeezing water pump 10, cuts out squeezing water valve 11, open squeeze water return valve 12, release;
D, startup air compression system 15, make compressed air pressure reach 0.77MPa, open back-flushing valve 18 and blowback intake valve 17, closes back-flushing valve 18 and blowback intake valve 17 after second time blowback 7s;
E; Unclamp filter plate, discharging, cleaning filter cloth.
During second time blowback, compressed air pressure drops to 0.72MPa from 0.77MPa, and there is obvious moisture on mud cake surface, and the average moisture content of mud cake is 53.66%; Automatically falling cake rate during discharging operations is 63.16%, and the SS in filtrate is 462.15mg/L, and the cleaning filter cloth time is 90min.
Embodiment 2 is compared with comparative example 2, and what blowback compressed air pressure declined lacks, and backflowing gas amount reduces, moisture content of the cake reduces by 0.48%, and automatically fall cake rate and improve 6.58%, the SS of pressing filtrate reduces 16.97%, illustrate that Milling Efficiencty is higher, scavenging period is corresponding shortening 7.78% also.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and this embodiment is also not used to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and all should be contained in the scope of the claims of this case.
Claims (4)
1. a method of operating for diaphragm filter press, is characterized in that: comprise the following steps:
A, filter plate compress, from central feed channel to charging filter plate;
After B, charging terminate, open pressure-air and first time blowback is carried out to central feed channel;
After C, first time blowback terminate, startup squeezing water pump injects squeeze water and squeezes in filter plate;
D, maintenance squeeze water pressure, open pressure-air and carry out second time blowback to central feed channel;
After E, second time blowback terminate, close pressure-air and squeezing water pump, the squeeze water in backflow filter plate;
F, unclamp filter plate, discharging, cleaning filter cloth.
2. the method for operating of a kind of diaphragm filter press according to claim 1, is characterized in that: in step B, first time blowback duration is 4-10s, and blowback pressure is 0.74-0.80MPa.
3. the method for operating of a kind of diaphragm filter press according to claim 1, is characterized in that: the second time blowback duration in step D is 4-10s, and blowback pressure is 0.74-0.80MPa.
4. the method for operating of a kind of diaphragm filter press according to claim 1 or 2 or 3, it is characterized in that: in step D, squeeze water pressure remains on 1.20-1.80MPa.
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| CN104147821B (en) * | 2014-08-19 | 2016-01-20 | 佛山市金凯地过滤设备有限公司 | A kind of filter press integral type discharging and discharge structure |
| CN110092552A (en) * | 2018-01-30 | 2019-08-06 | 辽宁德智环保技术有限公司 | A method of processing sludge conditioning excessive concentration |
| CN209155210U (en) * | 2018-10-30 | 2019-07-26 | 杨作星 | A kind of solid-liquid separation system and filter press of the two-way mixing squeezing of pneumatic conveying fluid |
| CN111499150A (en) * | 2020-05-11 | 2020-08-07 | 同臣环保装备科技(苏州)有限公司 | Application process for improving performance of plate-and-frame type presser |
| CN112156510B (en) * | 2020-09-30 | 2022-03-15 | 株洲时代新材料科技股份有限公司 | Automatic operation control method and system for diaphragm type filter press |
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| CN1460532A (en) * | 2003-06-18 | 2003-12-10 | 罗英铭 | Strong expression blade type filter |
| CN1762533A (en) * | 2004-10-18 | 2006-04-26 | 宋家骏 | Filter plate of filter press |
| CN101456656A (en) * | 2008-12-30 | 2009-06-17 | 杭州兴源过滤机有限公司 | Filtrating and squeezing process and system for desulphurization wastewater |
| CN101708390A (en) * | 2009-11-07 | 2010-05-19 | 核工业烟台同兴实业有限公司 | Vertical full-automatic diaphragm filter press |
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| CN103550966A (en) | 2014-02-05 |
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