CN1915869A - Method for automatic rinsing filter cloth for sludge dewatering system, and press filtration type sludge dewatering machine - Google Patents
Method for automatic rinsing filter cloth for sludge dewatering system, and press filtration type sludge dewatering machine Download PDFInfo
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- CN1915869A CN1915869A CN 200510092103 CN200510092103A CN1915869A CN 1915869 A CN1915869 A CN 1915869A CN 200510092103 CN200510092103 CN 200510092103 CN 200510092103 A CN200510092103 A CN 200510092103A CN 1915869 A CN1915869 A CN 1915869A
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- dewatering equipment
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- 239000010802 sludge Substances 0.000 title claims abstract description 144
- 239000004744 fabric Substances 0.000 title claims abstract description 106
- 238000001914 filtration Methods 0.000 title claims description 61
- 238000000034 method Methods 0.000 title claims description 45
- 239000002253 acid Substances 0.000 claims abstract description 90
- 238000004140 cleaning Methods 0.000 claims description 40
- 239000008399 tap water Substances 0.000 claims description 29
- 235000020679 tap water Nutrition 0.000 claims description 29
- 239000010801 sewage sludge Substances 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000004753 textile Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 6
- 238000010926 purge Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000007605 air drying Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
This invention discloses a sludge dehydrating system. The system comprises a filter-press sludge dehydrating machine, a sludge inlet pipeline, an acid inlet pipeline, an exhaust pipeline and a discharge pipeline. The sludge inlet pipeline is installed above the filter-press sludge dehydrating machine, and connected with the acid inlet pipeline and the exhaust pipeline. The discharge pipeline is also installed above the filter-press sludge dehydrating machine. The system can introduce the acid into the filter-press sludge dehydrating machine through the acid inlet pipeline to wash the filter cloth in the filter-press sludge dehydrating machine. The system can shorten the filter cloth washing time, save labor and cost, and increase the utility of the filter-press sludge dehydrating machine. The system can be used in semiconductor plants or photoelectronic plants for wastewater treatment, and in such fields as chemical engineering, petroleum industry, pharmacy, and textile and food industry.
Description
Technical field
The present invention relates to the filter cloth purging method of a kind of sludge dewatering system and sludge dewatering equipment, relate in particular to a kind of (In Situ) at the scene and clean the sludge dewatering system of filter cloth and the filter cloth auto-cleaning method of press filter type sludge dewatering equipment.
Background technology
Growing along with industry, the output of various trade effluents and domestic waste water also sharply increases, this not only makes in the processing difficulty day by day, and in the waste water contained mud if promptly topple over arbitrarily more and will cause secondary to destroy to environment without suitable processing.General in the treating processes of wastewater sludge, for can high-level efficiency and carry out carrying, burning or the landfill of mud economically, should remove moisture contained in the mud, to reach the purpose of minimizing and solid typeization as far as possible.Therefore, dewatering and filtering is most important sludge reduction means in sludge treating system.
The most general device for dehydrating sladge waste is press filter type sludge dewatering equipment (Filter PressMachine) at present.The press filter type sludge dewatering equipment have moisture percentage in sewage sludge height, filtration velocity fast, be applicable to advantage such as chemical sludge treatment process.The method that existing use press filter type sludge dewatering equipment carries out sludge dewatering treatment is: at first by oil gear filter plate is compressed, form the filtration chamber that can filter mud between the filter plate; Then, utilize the high pressure sludge pump from the mud storage tanks, mud to be pumped to the filtration chamber again, fill mud up to the filtration chamber; Then, utilize the filter cloth formed pressure difference in the filtration chamber on the filter plate that the extruding of the moisture in the mud is discharged, after the moisture of mud is discharged, in the filtration chamber, will form sludge cake; Afterwards, utilize oil gear that filter plate is separated again, sludge cake is come off, from the filtration chamber to reach the purpose of sludge dewatering.
In addition; the processing costs of clearing for the strainability of keeping the press filter type water extracter and water ratio that reduces sludge cake and minimizing mud; after above-mentioned steps, also utilize high pressure to clean water usually and clean filter cloth, to finish a complete cycle operation of press filter type sludge dewatering equipment.
But described use press filter type sludge dewatering equipment carries out still having some problems in the program of sludge dewatering treatment.For example, when the filter cloth of press filter type sludge dewatering equipment after repeatedly sludge dewatering program, the hole on the filter cloth will seriously be blocked by mud granule, even can cause the moisture in the mud to leach, and the dirty water extracter of press filter type can't be worked.If when using the clean water cleaning of high pressure filter cloth filter cloth can not be cleaned up, then must filter cloth be disassembled from the press filter type sludge dewatering equipment with making or have much ado, and then carry out filter cloth pickling program, so that the filter cloth recycling.In this process, existing filter cloth pickling program is: at first need filter cloth is disassembled; Re-using clear water tentatively cleans the dirt on filter cloth surface; Then filter cloth is dipped at normal temperatures in the hydrochloric acid soln about 5%, utilizing the good solvency power of hydrochloric acid with the obturator stripping in the filter cloth hole, and the time of soaking is taken 3 days at least; Afterwards filter cloth is cleaned with clear water; After treating its natural air drying, again filter cloth is reinstalled on the press filter type sludge dewatering equipment.
From the above, existing filter cloth pickling program is the step of a succession of very complicated, and so the practice is not only quite consuming time, and more need spend great amount of manpower and can carry out.In addition, filter cloth is disassembled on machine when carrying out the pickling program, the press filter type sludge dewatering equipment also can't carry out sludge dewatering, therefore will reduce the rate of utilization of press filter type sludge dewatering equipment.
Summary of the invention
Given this, the object of the present invention is to provide a kind of sludge dewatering system, it can shorten filter cloth and clean required time and manpower, to increase the rate of utilization of press filter type sludge dewatering equipment.
Another object of the present invention is to provide a kind of filter cloth auto-cleaning method of press filter type sludge dewatering equipment, this method can solve the time-consuming problem with effort of the filter cloth wash procedure of existing press filter type sludge dewatering equipment, thereby can shorten the filter cloth cleaning process, and required human cost can save filter cloth and clean the time.
Sludge dewatering system provided by the present invention comprises: the press filter type sludge dewatering equipment; The sewage sludge feed pipeline; The acid solution feeding pipe; Exhaust line and discharge pipe, wherein, the sewage sludge feed pipeline is disposed on the press filter type sludge dewatering equipment, and the acid solution feeding pipe is connected with the sewage sludge feed pipeline, and exhaust line is connected with the sewage sludge feed pipeline, discharge pipe is disposed on the press filter type sludge dewatering equipment.This system can import acid solution in the press filter type sludge dewatering equipment by the acid solution feeding pipe, cleans the polylith filter cloth of press filter type sludge dewatering equipment inside with on-the-spot (In Situ).
According to the present invention's one preferred implementation, the press filter type sludge dewatering equipment of described sludge dewatering system comprises: body; A plurality of filter plates; The polylith filter cloth; Oil gear, wherein, dispose at least two cross bars on the body, filter plate can be put and pass in the cross bar, when adjacent filter plate near the time, to constitute a plurality of filtration chambers between each filter plate, coat on the filter plate filter cloth is installed, oil gear is disposed at a side of body, and oil gear comprises mobile terminal and inboardend, the mobile terminal is connected with the cross bar of body respectively with inboardend, with the closed or separation with filter plate.
According to the described sludge dewatering system of another preferred implementation of the present invention, on the sewage sludge feed pipeline, dispose first control valve.In addition, the described sludge dewatering system of preferred implementation of the present invention also disposes return line, and this return line is connected with mud pipeline opening for feed, and disposes second control valve on the return line.
According to the present invention's described sludge dewatering system of a preferred implementation again, also comprise the clean pipeline that is disposed on the press filter type sludge dewatering equipment in this sludge dewatering system, dispose control valve on this clean pipeline.
According to the described sludge dewatering system of the another preferred implementation of the present invention, dispose first control valve on the acid solution feeding pipe.In addition, also comprise on the acid solution feeding pipe and dispose the tap water suction culvert that is connected with the acid solution feeding pipe, and dispose second control valve on the tap water suction culvert.
According to the described sludge dewatering system of another preferred implementation of the present invention, on exhaust line, dispose control valve.
According to the described sludge dewatering system of the another preferred implementation of the present invention, on discharge pipe, dispose control valve.
According to the present invention's described sludge dewatering system of a preferred implementation again, this system also is included in configuration tap pipeline on the discharge pipe, and disposes control valve on the tap pipeline.
The present invention utilizes the acid solution feeding pipe that acid solution is imported in the press filter type sludge dewatering equipment, so that the filter cloth in the press filter type sludge dewatering equipment is cleaned.Therefore, the present invention can shorten filter cloth and clean required time and manpower, and can increase the rate of utilization of press filter type sludge dewatering equipment.
The present invention also provides a kind of filter cloth auto-cleaning method of press filter type sludge dewatering equipment, and this method comprises: with a plurality of filter plate closures, make to constitute a plurality of filtration chambers between adjacent filter plate, and coating is equipped with filter cloth on each filter plate; Then, acid solution is injected the filtration chamber and made acid solution be detained for some time in the filtration chamber, clean filter cloth to utilize acid solution; And then acid solution discharged.
According to the filter cloth auto-cleaning method of the described press filter type sludge dewatering equipment of the present invention's one preferred implementation, the described step that acid solution is injected the filtration chamber comprises by the acid solution feeding pipe is connected with the press filter type sludge dewatering equipment acid solution is imported the filtration chamber.In addition, the step of acid solution being injected the filtration chamber also comprises by the gas that exhaust line is connected with the press filter type sludge dewatering equipment acid solution is produced and discharging.
According to the filter cloth auto-cleaning method of the described press filter type sludge dewatering equipment of another preferred implementation of the present invention, the step of described discharge acid solution comprises by discharge pipe is connected with the press filter type sludge dewatering equipment discharges acid solution.
According to the filter cloth auto-cleaning method of the described press filter type sludge dewatering equipment of the another preferred implementation of the present invention, wherein, also comprise discharge acid solution after, tap water is injected the filtration chamber, with the step of those filter clothes of cleaning and filtering chamber interior.In addition, the step of tap water being injected the filtration chamber comprises and utilizes the tap water suction culvert that tap water is imported the filtration chamber.And, also be included in tap water is injected the step that the filtration chamber discharges tap water afterwards.
According to the present invention's filter cloth auto-cleaning method of the described press filter type sludge dewatering equipment of a preferred implementation again, described acid solution comprises hydrochloric acid soln.
According to the filter cloth auto-cleaning method of the described press filter type sludge dewatering equipment of another preferred implementation of the present invention, the time that described acid solution is detained in the filtration chamber is 24 hours.
From the above, filter cloth auto-cleaning method of the present invention is provided with the scene and carries out the program that filter cloth cleans, so the filter cloth wash procedure that can solve existing press filter type sludge dewatering equipment is time-consuming and the problem of effort, thereby can shorten the filter cloth cleaning process, and required human cost can save filter cloth and clean the time.
Description of drawings
For described and other purposes, feature and advantage of the present invention can be become apparent, hereinafter in conjunction with the accompanying drawings preferred implementation of the present invention is elaborated.
Fig. 1 is the device layout diagram of the sludge dewatering system of preferred implementation of the present invention;
Fig. 2 is the flow chart of steps of filter cloth auto-cleaning method of the press filter type sludge dewatering equipment of preferred implementation of the present invention.
Description of reference numerals
100 sludge dewatering systems
102 press filter type sludge dewatering equipments
104 sewage sludge feed pipelines
104a、106a、108a、122a、
124a, 126a, 128a, 130a control valve
104b, 106b, 124b pump
106 acid solution feeding pipes
108 discharge pipes
110 cross bars
112 oil gears
The 112a inboardend
The 112b mobile terminal
114 filter plates
116 filter clothes
118 filtration chambers
120 sludge sumps
122 return lines
124 clean pipeline
126 tap water suction culverts
128 tap pipelines
130 exhaust lines
132 ablution storage tankss
134 acid solution storage tankss
200,210,220 steps
Embodiment
The filter cloth auto-cleaning method of sludge dewatering system of the present invention and press filter type sludge dewatering equipment is except can using the wastewater treatment in the manufacturing processed of high-tech industries such as semiconductor factory and photoelectricity factory, also can be applicable in other proper domain, as industries such as chemical industry, oil, pharmacy, weaving and food.
Fig. 1 is the device layout diagram of the sludge dewatering system of preferred implementation of the present invention.
See also Fig. 1, sludge dewatering system 100 of the present invention comprises press filter type sludge dewatering equipment 102, sewage sludge feed pipeline 104, acid solution feeding pipe 106, exhaust line 130 and discharge pipe 108.
Press filter type sludge dewatering equipment 102 comprises body, oil gear 112, a plurality of filter plate 114 and polylith filter cloth 116.Wherein, dispose two cross bars 110 on the body, oil gear 112 is disposed at a side of body, and oil gear 112 comprises inboardend 112a and mobile terminal 112b, inboardend 112a and mobile terminal 112b are connected the cross bar 110 of body respectively, so that filter plate 114 is closed or separate.In addition, a plurality of filter plates 114 can be put and pass in the cross bar 110, and filter cloth 116 coatings are installed on the filter plate 114.Wherein, filter plate 114 is movable filter plate, by starting oil gear 112 mobile terminal 112b is moved toward inboardend 112a direction, make filter plate 114 near, 114 formation of adjacent two filter plates this moment enclosed space, this enclosed space promptly can be used as the filtration chamber 118 of the moisture that filters mud.
In addition, sewage sludge feed pipeline 104 is disposed on the press filter type sludge dewatering equipment 102, and disposes control valve 104a on the sewage sludge feed pipeline 104.Utilize sewage sludge feed pipeline 104 and pump 104b waste water can be imported in sludge sump 120 in the press filter type sludge dewatering equipment 102, to carry out sludge dewatering treatment.In addition, but on sewage sludge feed pipeline 104 tap return line 122 also, also configurable control valve 122a on return line 122, the other end of return line 122 is connected with sludge sump 120.Return line 122 can make waste water in being delivered to press filter type sludge dewatering equipment 102 during, when filling with waste water in the filtration chamber 118, waste water can not overflow and, and can flow back in the sludge sump 120 again.
In addition, also configurable clean pipelines 124 in the sludge dewatering system 100, it can be connected with press filter type sludge dewatering equipment 102, and configurable on the clean pipeline 124 have a control valve 124a.Clean pipeline 124 and can be used for the conventional press filter type sludge dewatering equipment 102 that cleans, it utilizes pump 124b in the high pressure mode ablution to be carried out clean-out operation in ablution storage tanks 132 importing press filter type sludge dewatering equipments 102.
In addition, an end of acid solution feeding pipe 106 of the present invention is disposed at the inlet of sewage sludge feed pipeline 104, and the other end is connected with pump 106b, and disposes control valve 106a on the acid solution feeding pipe 106.Wherein, acid solution feeding pipe 106 can import acid solution in the press filter type sludge dewatering equipment 102 in acid solution storage tanks 134, with dissolving filter cloth 116 intrapore obturators, reaches the purpose of cleaning filter cloth 116.Because acid solution is that chemical solution can produce chemical gas, therefore also can be in the inlet tap exhaust line 130 of sewage sludge feed pipeline 104, and also dispose control valve 130a on the exhaust line 130.Certainly, also configurable tap water suction culvert 126 on acid solution feeding pipe 106, also configurable control valve 126a on the tap water suction culvert 126.Therefore, after the filter cloth 116 that uses acid solution cleaning press filter type sludge dewatering equipment 102, can also use tap water to clean filter cloth 116, and the acid solutions in the filtration chamber 118 are rinsed well.
In addition, configurable discharge pipe 108 can be installed control valve 108a on the discharge pipe 108 on press filter type sludge dewatering equipment 102, in addition, also can dispose tap pipeline 128 and control valve 128a thereof on discharge pipe 108.Wherein, discharge pipe 108 can be discharged moisture, ablution, acid solution and the tap water of mud with tap pipeline 128, and utilize control valve 108a and the control valve 128a can be when using acid solution to clean filter cloth 116, acid solution is stored in the filtration chamber 118, avoiding acid solution to flow out, and make the obturator of acid solution stripping filter cloth 116 holes.
The following describes carry out sludge dewatering treatment after, utilize the filter cloth auto-cleaning method of the press filter type sludge dewatering equipment that this press filter type sludge dewatering system carried out.
Fig. 2 is the flow chart of steps of filter cloth auto-cleaning method of the press filter type sludge dewatering equipment of preferred implementation of the present invention.
Please at first with filter plate 114 closures (step 200), make 114 of adjacent filter plates constitute a plurality of filtration chambers 118 simultaneously referring to Fig. 1 and Fig. 2.Described step with filter plate 114 closures is startup oil gear 112, the mobile terminal 112b of oil gear 112 is moved, so that a plurality of filter plates 114 closures on the press filter type sludge dewatering equipment 102 toward inboardend 112a.Wherein, filter cloth 116 has been housed on the filter plate 114, and 114 of adjacent two filter plates form filtration chamber 118.
Then, acid solution is injected filtration chamber 118, and make acid solution in the filtration chamber, be detained for some time (step 210), utilize the obturator stripping of acid solution, to clean filter cloth 114 filter cloth 116 holes.Wherein, acid solution for example can be a hydrochloric acid soln.In addition, the described step that acid solution is injected filtration chamber 118 utilizes acid solution feeding pipe 106 that acid solution is imported filtration chamber 118.Wherein, time of stopping in filtration chamber 118 of acid solution for example is about 24 hours.
In addition, acid solution injected filtration chamber 118 before, need earlier control valve 104a, control valve 108a, control valve 122a, control valve 124a and control valve 128a are closed, so that filtration chamber 118 becomes the enclosed space that can accept acid solution.Then, opening controlling valve 130a, with avoid chemical gas that acid solution produces in pipeline or filtration chamber 118 produce air pressure and influence whole sludge dewatering system.Afterwards, restart pump 106b, acid solution is injected filtration chamber 118.Wherein, when flowing out among the acid solution self-acting control valve 130a, know that promptly filtration chamber 118 has filled with acid solution, but therefore closed control valve 106a and pump 106b, but still need this moment control valve 130a is held open state, discharge by exhaust line 130 with the chemical gas that constantly acid solution is produced.
Please continue simultaneously referring to Fig. 1 and Fig. 2.Afterwards, acid solution is discharged (step 220).Wherein, the step that acid solution is discharged is that control valve 108a and control valve 128a are opened, and makes acid solution by discharging in the discharge pipe 108.
In addition, after described step 220, also tap water can be injected filtration chamber 118, so that filtration chamber 118 is rinsed well with the acid solution of filter cloth 116.Wherein, the step of tap water being injected filtration chamber 118 utilizes tap water suction culvert 126 that tap water is imported in the filtration chamber 118 for earlier control valve 108a and control valve 128a being closed again.In addition, tap water imported filtration chamber 118 after, also control valve 108a and control valve 128a can be opened, so that tap water is discharged by discharge pipe 108.
Therefore, behind the automatic wash procedure of filter cloth, promptly finish the wash procedure of whole filter cloth, again each control valve is returned the location after, this press filter type sludge dewatering equipment 102 just can be proceeded the sludge dewatering treatment program.
From the above, configuration acid solution feeding pipe 106 in the sludge dewatering system 100 of the present invention, acid solution is imported in the filtration chamber 118 to clean filter cloth 116, and not as prior art, filter cloth must be disassembled and carry out a series of step so that filter cloth is cleaned, therefore can save the manpower and the time of cleaning filter cloth.And, utilize described filter cloth auto-cleaning method (In Situ) cleaning filter cloth at the scene, thereby can shorten the filter cloth scavenging period, and can improve the rate of utilization of press filter type sludge dewatering equipment.
Below, especially exemplified by experimental example and comparative example filter cloth purging method of the present invention is described, proving effect of the present invention, but this is not to be limitation of the present invention.
Experimental example
The filter cloth auto-cleaning method of press filter type sludge dewatering equipment of the present invention is: earlier with the filter plate closure; Again acid solution is injected the filtration chamber, about 24 hours of the time that acid solution is detained in the filtration chamber; Afterwards, acid solution is discharged, promptly finish the cleaning of filter cloth.In addition, after the acid solution discharge, also can re-use tap water cleaning and filtering chamber 2～3 times, so that acid solution is rinsed well.
Wherein, the cleaning step of described filter cloth only needs slip-stick artist's independent operation to get final product, and about 36 hours of the time that is spent.
Comparative example
Existing filter cloth purging method is: earlier filter cloth is disassembled from the press filter type sludge dewatering equipment, this step needs four operator and about 4 hours consuming time; Then, use clear water that the filter cloth surface is tentatively cleaned, this step needs two operator and about 1 hour consuming time; Afterwards, 5% hydrochloric acid soln is injected a bucket groove, and filter cloth is immersed in barrel groove, this step needs two operator and about 1 hour consuming time, wherein, and about 72 hours of the time that filter cloth soaks; Then, filter cloth is taken out, and with a large amount of flushing with clean water, this step needs two operator and about 1 hour consuming time; Again with the filter cloth natural air drying, and natural air drying needs about 12 hours consuming time; Afterwards, filter cloth is reinstalled on the press filter type sludge dewatering equipment, this step needs four operator and about 4 hours consuming time.
From the above, existing filter cloth purging method needs several operator, total about six days consuming time.
Therefore, from described experimental example and comparative example as can be known, existing filter cloth purging method needs the step of a succession of very complicated, not only spends great amount of manpower and quite time-consuming.Yet filter cloth auto-cleaning method of the present invention only needs slip-stick artist's independent operation to get final product, and the time required than the prior art time that is spent shortens dramatically.In addition, because of the present invention can save the scavenging period of filter cloth, so can improve the rate of utilization of press filter type sludge dewatering equipment.
In sum, the present invention has the following advantages at least:
1. the present invention can shorten the filter cloth cleaning process, and required human cost when saving filter cloth and cleaning.
2. the present invention can shorten required time and the manpower of filter cloth cleaning, thereby can improve the rate of utilization of press filter type sludge dewatering equipment.
3. the wastewater treatment of the present invention in can be used for high-tech industries productions such as semiconductor factory and photoelectricity factory, also can be applicable in other suitable industries, as industries such as chemical industry, oil, pharmacy, weaving and food.
Though the present invention discloses as above by preferred implementation; but this is not to be limitation of the present invention; the any technician in this area is under the prerequisite that does not exceed design of the present invention and scope; can make some conversion and retouching, so protection scope of the present invention should be as the criterion with the scope that claims were defined.
Claims (20)
1. sludge dewatering system comprises:
The press filter type sludge dewatering equipment;
Be disposed at the sewage sludge feed pipeline on this press filter type sludge dewatering equipment;
The exhaust line that is connected with described sewage sludge feed pipeline;
Be disposed at the discharge pipe on the described press filter type sludge dewatering equipment, and
The acid solution feeding pipe that is connected with described sewage sludge feed pipeline wherein, can import acid solution in the described press filter type sludge dewatering equipment by described acid solution feeding pipe, cleans the polylith filter cloth of described press filter type sludge dewatering equipment inside with the scene.
2. sludge dewatering system as claimed in claim 1, wherein, described press filter type sludge dewatering equipment comprises:
Dispose the body of at least two cross bars;
A plurality of filter plates, described filter plate can be put and pass in the described cross bar, and adjacent described filter plate near the time, constitute a plurality of filtration chambers between two adjacent filter plates;
The polylith filter cloth, they coat and are installed on each described filter plate; And
Be disposed at the oil gear of described body one side.
3. sludge dewatering system as claimed in claim 2, wherein, described oil gear comprises a mobile terminal and an inboardend, this mobile terminal and described inboardend are connected the described cross bar of described body respectively, so that described filter plate is closed or separate.
4. sludge dewatering system as claimed in claim 1 wherein, disposes first control valve on the described sewage sludge feed pipeline.
5. sludge dewatering system as claimed in claim 4 wherein, also comprises return line, and this return line is connected with described sewage sludge feed pipeline, and disposes second control valve on this return line.
6. sludge dewatering system as claimed in claim 1 wherein, also comprises the clean pipeline that is disposed on the described press filter type sludge dewatering equipment, and should clean on the pipeline and dispose control valve.
7. sludge dewatering system as claimed in claim 1 wherein, disposes first control valve on the described acid solution feeding pipe.
8. sludge dewatering system as claimed in claim 7 wherein, also disposes the tap water suction culvert on the described acid solution feeding pipe, and this tap water suction culvert is connected with described acid solution feeding pipe, and disposes second control valve on this tap water suction culvert.
9. sludge dewatering system as claimed in claim 1 wherein, disposes control valve on the described exhaust line.
10. sludge dewatering system as claimed in claim 1 wherein, disposes control valve on the described discharge pipe.
11. sludge dewatering system as claimed in claim 1 wherein, disposes the tap pipeline on described discharge pipe, dispose control valve on this tap pipeline.
12. the filter cloth auto-cleaning method of a press filter type sludge dewatering equipment comprises:
With a plurality of filter plate closures, make to constitute a plurality of filtration chambers between the adjacent filter plate of these filter plates, wherein coat on each described filter plate the polylith filter cloth is installed;
Acid solution is injected described filtration chamber, and make acid solution in described filtration chamber, be detained for some time, clean described filter cloth to utilize acid solution; And
Discharge described acid solution.
13. the filter cloth auto-cleaning method of press filter type sludge dewatering equipment as claimed in claim 12, wherein, the described step that acid solution is injected the filtration chamber comprises that utilizing the acid solution feeding pipe to be connected with described press filter type sludge dewatering equipment imports described filtration chamber with acid solution.
14. the filter cloth auto-cleaning method of press filter type sludge dewatering equipment as claimed in claim 13, wherein, the described step that acid solution is injected described filtration chamber comprises that also the gas that utilizes being connected of exhaust line and described press filter type sludge dewatering equipment that described acid solution is produced discharges.
15. the filter cloth auto-cleaning method of press filter type sludge dewatering equipment as claimed in claim 12, wherein, the step of described discharge acid solution comprises utilizes discharge pipe and being connected of described press filter type sludge dewatering equipment that acid solution is discharged.
16. the filter cloth auto-cleaning method of press filter type sludge dewatering equipment as claimed in claim 12 wherein, also is included in and tap water is injected described filtration chamber after discharging described acid solution, with the step of the described filter cloth that cleans inside, described filtration chamber.
17. the filter cloth auto-cleaning method of press filter type sludge dewatering equipment as claimed in claim 16, wherein, the step that tap water is injected described filtration chamber comprises utilizes the tap water suction culvert that tap water is imported described filtration chamber.
18. the filter cloth auto-cleaning method of press filter type sludge dewatering equipment as claimed in claim 16 wherein, also comprises tap water is injected after the described filtration chamber, discharges the step of described tap water.
19. the filter cloth auto-cleaning method of press filter type sludge dewatering equipment as claimed in claim 12, wherein, described acid solution comprises hydrochloric acid soln.
20. the filter cloth auto-cleaning method of press filter type sludge dewatering equipment as claimed in claim 12, wherein, the time that described acid solution is detained in described filtration chamber is 24 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510092103 CN1915869A (en) | 2005-08-19 | 2005-08-19 | Method for automatic rinsing filter cloth for sludge dewatering system, and press filtration type sludge dewatering machine |
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| CN 200510092103 CN1915869A (en) | 2005-08-19 | 2005-08-19 | Method for automatic rinsing filter cloth for sludge dewatering system, and press filtration type sludge dewatering machine |
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| CN1915869A true CN1915869A (en) | 2007-02-21 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179086A (en) * | 2011-04-20 | 2011-09-14 | 无锡恒诚硅业有限公司 | Alkali cleaning system for filter cloth of press filter and cleaning method thereof |
| CN101456656B (en) * | 2008-12-30 | 2013-06-26 | 杭州兴源过滤科技股份有限公司 | Filtrating and squeezing process and system for desulphurization wastewater |
| CN103933763A (en) * | 2014-04-03 | 2014-07-23 | 广东溢达纺织有限公司 | Cleaning method of filter press |
| CN104193136A (en) * | 2014-09-22 | 2014-12-10 | 河南工业大学 | Method for improving sludge dewatering performance through organic acid pretreatment |
| CN104386893A (en) * | 2014-12-05 | 2015-03-04 | 许国胜 | Sludge treatment method and device |
| CN115445266A (en) * | 2022-10-12 | 2022-12-09 | 上海市政工程设计研究总院（集团）有限公司 | System for online acid water gas washing plate frame filter cloth |
| CN115487555A (en) * | 2022-10-12 | 2022-12-20 | 上海市政工程设计研究总院（集团）有限公司 | High-frequency ultrasonic integrated acid water gas washing filter cloth device of plate-and-frame dehydrator |
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2005
- 2005-08-19 CN CN 200510092103 patent/CN1915869A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456656B (en) * | 2008-12-30 | 2013-06-26 | 杭州兴源过滤科技股份有限公司 | Filtrating and squeezing process and system for desulphurization wastewater |
| CN102179086A (en) * | 2011-04-20 | 2011-09-14 | 无锡恒诚硅业有限公司 | Alkali cleaning system for filter cloth of press filter and cleaning method thereof |
| CN102179086B (en) * | 2011-04-20 | 2016-04-13 | 无锡恒诚硅业有限公司 | A kind of filter cloth alkali washing system for filter press and cleaning method thereof |
| CN103933763A (en) * | 2014-04-03 | 2014-07-23 | 广东溢达纺织有限公司 | Cleaning method of filter press |
| CN103933763B (en) * | 2014-04-03 | 2016-01-20 | 广东溢达纺织有限公司 | The cleaning method of filter press |
| CN104193136A (en) * | 2014-09-22 | 2014-12-10 | 河南工业大学 | Method for improving sludge dewatering performance through organic acid pretreatment |
| CN104386893A (en) * | 2014-12-05 | 2015-03-04 | 许国胜 | Sludge treatment method and device |
| CN104386893B (en) * | 2014-12-05 | 2016-06-01 | 许国胜 | The treatment process of a kind of mud and device thereof |
| CN115445266A (en) * | 2022-10-12 | 2022-12-09 | 上海市政工程设计研究总院（集团）有限公司 | System for online acid water gas washing plate frame filter cloth |
| CN115487555A (en) * | 2022-10-12 | 2022-12-20 | 上海市政工程设计研究总院（集团）有限公司 | High-frequency ultrasonic integrated acid water gas washing filter cloth device of plate-and-frame dehydrator |
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