CN201198463Y - Sludge dewatering equipment - Google Patents
Sludge dewatering equipment Download PDFInfo
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- CN201198463Y CN201198463Y CNU2008200796872U CN200820079687U CN201198463Y CN 201198463 Y CN201198463 Y CN 201198463Y CN U2008200796872 U CNU2008200796872 U CN U2008200796872U CN 200820079687 U CN200820079687 U CN 200820079687U CN 201198463 Y CN201198463 Y CN 201198463Y
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Abstract
The utility model discloses a sludge-dehydrating device (1), which comprises a sludge-conveying mechanism (3), a distribution mechanism (4), at least one container, a squeezing mechanism (6) and a pressure-applying mechanism (5); wherein, the sludge-conveying mechanism (3) is used to convey hydrous sludge (9) needing to be treated; the distribution mechanism (4) is connected with the sludge-conveying mechanism (3); the containers receive the sludge coming from the distribution mechanism (4); the containers, the volumes of which can be changed, are closable; the squeezing mechanism (6) is used to squeeze the hydrous sludge (9) in the containers; the pressure-applying mechanism (5) is used to apply pressure on the squeezing mechanism (6); the squeezing mechanism (6) comprises a plurality of movable squeezing plates (16) which are partitioned from one another; and the containers are flexible filter bags (17), each of which is placed between two partitioned squeezing plates (16) and provided with a seal at the opening. In order to increase the dehydration rate of the pressure-applying mechanism (5), the pressure applied on the squeezing mechanism (6) by the pressure-applying mechanism (5) is not less than 15kg/cm<2>.
Description
Technical field
The utility model relates to sludge treatment device, particularly relates to device for dehydrating sladge waste.
Background technology
In recent years, along with the raising of expanding economy and people's life, cities and towns industrial sewage and sanitary sewage roll up.In today of more and more paying close attention to environmental protection, must handle these sewage, to realize sustainable development.And to produce the problem of mud inevitably to the processing of sewage.
People's life with produce, mainly produce the mud of several major types: sewage sludge, give sewage sludge, water body desilting mud and supplying drainage mud.In the above-mentioned type mud, the output maximum, pollution level is the highest and the most unmanageable sewage sludge that surely belongs to.Therefore, the key of sludge treatment technology is the processing of sewage sludge, and its related technology, method and principle can correspondingly be used for the sludge treatment of other type.
For a long time, people have given more concern to sewage disposal technology, and treatment process is increasingly mature, and the processing standard also improves gradually, yet not enough to the processing power of mud.Although spent great amount of manpower and material resources and financial resources have been administered sewage, mud can not get effective processing, has offset the environment protection meaning of sewage disposal greatly, and sewage disposal is got half the result with twice the effort.
The sewage disposal initial cost is big, the working cost height.A lot of for this reason mud only concentrate, after the mechanical dehydration of shallow degree handles, just are sent to the refuse tip landfill or are directly exposed in the wilderness through gravity, cause serious secondary pollution.Most countries adopts methods such as landfill, burning and soil utilization for sewage sludge at present.Though burning disposal decrement degree is very high, the investment working cost is higher, and has the problem of smoke pollution.The soil utilization can be turned waste into wealth mud, but majority contains objectionable impuritiess such as heavy metal ion, hardly degraded organic substance in the mud, is difficult to reach the soil and utilizes standard.The required cost of not treated landfill is minimum, but it will take a large amount of land resources, and the environment around the landfill yard also can worsen.And solids content is low after the mud simple dehydration, also can cause above problem.
Present Chinese major part is still carried out landfill, and this mode has higher requirement to the moisture percentage in sewage sludge index.Press national Specification, water content requirement just can be carried out landfill smaller or equal to 60%.And can not the full dose landfill, must and rubbish a ratio of mixture be arranged, be less than 8%.Brought new problem to us thus, if mud will carry out landfill, water ratio must further descend so.On a large scale mud is carried out the mode of mechanical dehydration from lot of domestic and international,, cause moisture percentage in sewage sludge to drop to below 60% because equipment and technology are unreasonable.
For the processing of mud, it is crucial reducing moisture significantly, creates conditions for follow-up processing, utilization and transportation like this.Resource utilization as much as possible by composition and the character of improving mud, reclaims the energy and resource on this basis, pollutes and processing cost to reduce mud.
There is different methods of disposal in a lot of in the world countries to the dehydration of mud, for example adopt nature mummification, heat drying, burning, osmosis and mechanical dehydration etc.Because the mechanical dehydration power consumption is relative with the land occupation resource less, so the preferred mechanical dehydration that adopts earlier., about 80%, and then handle through the moisture percentage in sewage sludge behind the mechanical dehydration.But before adopting mechanical dehydration technology, generally to carry out machinery and concentrate at present.Machinery concentrates that whizzer concentrates, the belt thickner concentrates, the rotary drum thickner concentrates and spiral shell presses thickner to concentrate.Machinery concentrates and can make sludge content reach 6%-7%, and effect is better, but facility investment and running expense are also high.Mud is through after the concentration, and its water ratio need further carry out mechanical dehydration about 94%.The equipment of main mechanical dehydration has vacuum filtration, plate basket pressure filter, belt filter press and centrifuge.
China utility model patent CN92205317.0 discloses the sewage sludge treatment unit of a kind of tool high pressure and vacuum, comprise that mainly is subjected to a hydraulically powered piston, the extrusion chamber of an inflexible variable volume, be provided with the screen plate that highdensity pottery or cement plate are made bottom the extrusion chamber, water only leaches from this bottom.In addition, the bottom of extrusion chamber also joins with vacuum unit simultaneously.As can be seen, the processing efficiency of said apparatus is not high, owing to also must cooperate the high vacuum operation, and the screen plate that has used pottery or cement plate to make, pressure can be very not high.
US4,181,616 disclose a kind of device for dehydrating sladge waste, it is used in particular for the sludge treatment of water purification plant, has primary nothing indentation chamber type dewatering period A, one or more horizontal drying zone B that form by the horizontally extending strainer that is positioned under this elementary section A, the high pressure dewatering unit D after a middle pressure drum fillter section C reaches.This equipment belongs to extrusion pressing type structure commonly used, and is wherein porose on the steel crawler belt, by extruding up and down, thereby dewaters on rigid material.Its complex structure, squeeze pressure are not high, and the dehydration rate of mud is difficult to reach 30%.
Summary of the invention
Therefore, main purpose of the present utility model is to want to overcome the deficiency of prior art, proposes a kind of device for dehydrating sladge waste of novelty, and it adopts flexible pouch to carry out mechanical dehydration, and it is little, simple in structure to consume energy, simultaneously the processing efficiency height.
For this reason, the utility model provides a kind of device for dehydrating sladge waste, comprising:
(a) be used to carry the slurry conveying machine structure of pending water-containing sludge;
(b) distributor gears that joins with described slurry conveying machine structure;
(c) at least one admits the container from the mud of described distributor gears, and described at least one container can seal and variable volume;
(d) pressing mechanism is used for the water-containing sludge of squeeze receptacle;
(e) pressure exerting arrangement is used for described pressing mechanism is exerted pressure;
It is characterized in that described pressing mechanism comprises a plurality of apart from one another by the movable stripper plate of opening, described at least one container is flexible filter bag, and each filter bag is placed between the isolated stripper plate, and the opening part of each filter bag is provided with closing device.
A plurality of filtering material and container are integrated apart from one another by movable stripper plate of opening and flexible filter bag because the utility model has adopted, and structure is comparatively simple, powerful easily simultaneously push and treatment capacity big.
According to the further feature of the utility model, described pressure exerting arrangement applies described pressing mechanism and is not less than 15Kg/cm
2Pressure.
By further structure of the present utility model, side at the pressing mechanism relative with pressure exerting arrangement is provided with the mechanical type energy storage, described pressure exerting arrangement is locked by a locking gear after described pressing mechanism is applied to nominal stroke and pressure, hydro-pump needn't work on for keeping high pressure afterwards, by the afterburning acting of the energy storage of the opposite side that is positioned at described pressing mechanism, finish extrusion process, thereby play energy-conservation effect.
The applicant finds that if the flexible filter bag of sealing is adopted ultra-high voltage extruding (every square centimeter more than 15 kilograms), then sewage sludge can dewater rapidly, and the moisture content of the cake of formation is lower than 30%, and the adhesion of mud cake discord filtering material.Because above-mentioned ultra-high voltage makes the biological cell wall in the mud broken under action of mechanical pressure, causes cell rupture, has the effect of physical sterilization.Can reduce simultaneously the size of granule sludge, help further processing.This is a kind of simple and practical method.In addition, the view to pressure and sludge filtration speed relation has been overturned traditionally in applicant's discovery.
By present research conclusion, in the mechanical dehydration process, active sludge and filtration medium intersection can form the thin height of one deck and compress layer, and nearly all resistance comes from this layer.There is an emergent pressure in active sludge, and when pressure exceeded this emergent pressure, filtration velocity no longer increased, so too high pressure can not improve filtering rate.In addition, because in the process to the mud extruding, mud cake is more and more thicker, in fact above-mentioned height compresses layer also can be more and more thicker, causes the reduction of extrusion dehydration ability.Also think by present research, when mud cake is thick more, when pressure is high more, pressurize all will cause the reduction of extrusion dehydration speed.Because above view has stoped people to adopt ultra-high voltage (15Kg/cm
2More than) trial.
In addition, because a large amount of flocculation agents that use in the sewage treatment process, last flocculation agent exists in the mud, and its characteristic is to absorb moisture in a large number, and firm unusually with the molecular chain of water molecules.Press traditional theory, must destroy its combination, could further reduce the water ratio of mud then, further handle for mud and give security with the method for heating.Because the characteristic of mud is a thickness, the mode that water ratio height, moisture exist in mud is special, and the whole world is thought at present if adopt the method for non-heating, only can be dewatered 20%.Under acceptable rate of water loss, make mud reach moisture with mechanical means and be difficult to below 30%.
Description of drawings
Below, describing the utility model in conjunction with the accompanying drawings in detail, identical Reference numeral is represented identical member.Wherein:
Fig. 1 represents the general illustration of device for dehydrating sladge waste of the present utility model;
Fig. 2 is a skeleton view, shows the part of the pressing mechanism of dehydration equipment;
Fig. 3 shows a kind of form of implementation of the energy storage that cooperates with pressing mechanism;
Fig. 4 shows the another kind of form of implementation of the energy storage that cooperates with pressing mechanism;
Fig. 5 is the skeleton view of sealed piece.
Embodiment
As shown in Figure 1, totally mainly comprise worm conveyor 3, divider 4, pressing mechanism 6 and pressure exerting arrangement 5 with 1 dehydration equipment of representing.Hopper 2 is arranged on the worm conveyor 3, and the mud 9 in the hopper 2 is transported to divider 4 through this worm conveyor.Divider 4 is provided with some infusion tube 12, and its infusion velocity is adjustable.Described mud 9 contains the water of 80%-98%.In an illustrated embodiment, pressure exerting arrangement 5 is a hydro-cylinder, and adjustable in pressure is pressurizeed to pressing mechanism from a side.Pressure exerting arrangement 5 can be the screw type top press also, is similar to spiral screw block.The opposite side of pressing mechanism is equipped with energy storage 15.The function of energy storage 15 will describe in detail below.Understand that easily energy storage 15 also can substitute with another hydro-cylinder, thereby is equipped with pressure exerting arrangement in the both sides of pressing mechanism.Certainly, also can cancel described energy storage 15, only in a side pressure exerting arrangement 15 is set, opposite side maintains static.
The water that ejects from pressing mechanism 6 flows to water collector 7 by transfer lime 11, and this water generally will further process, because water treatment is not a theme of the present utility model, has not just given unnecessary details here.
Also can establish transfer roller 86 times at pressing mechanism, be used to carry the mud cake 10 of discharging, for subsequent disposal from pressing mechanism 6.Transfer roller 8 is preferably endless belt conveyor, also can adopt other suitable e Foerderanlage.
Next please referring to Fig. 2, it schematically shows the part of pressing mechanism 6 with the form of skeleton view.Pressing mechanism 6 has some isolated, movable stripper plates 16.Space between the stripper plate is provided with filter bag 17.Filter bag shown in the figure has only three, obviously can increase as required.Generally speaking, the quantity of filter bag 17 is lacked one than the quantity of stripper plate 16.In addition, have some through holes (seeing Fig. 3 and 4) on the stripper plate 16, be used to leak water.The through hole 23 of the stripper plate 16 among Fig. 3 and Fig. 4 can replace by facing some projectioies filter bag, on stripper plate plate face or offering the groove that is interconnected at described plate face.Certainly, the various combinations of described through hole 23, projection and groove are also at the row of consideration.
Please continue referring to Fig. 2, many filter bags 17 and stripper plate 16 are arranged in casing 20 (figure is represented by dotted lines), and stripper plate 16 can slide in this supporting box 20 when being subjected to the pressure P of pressure exerting arrangement 5, so that wherein filter bag 17 is pushed.Four vertical walls of casing 20 can dash, and the bottom of casing has gully-hole 21, is communicated with transfer lime 11 among Fig. 1, with the water carrying-off of extruding.
Described filter bag 17 is made up of fabric, and as nylon, preferred withstand voltage is 120Kg/cm
2Above material, the upper end of its opening is attached with sealing member 18.Described sealing member 18 (for example) can be the form (seeing also Fig. 5) of cylindric rubber seal, suitable with the opening of filter bag, and has certain thickness S, make the 6 pressurization initial stages of 5 pairs of pressing mechanisms of pressure exerting arrangement just can flatten the sealing part, thereby seal described opening by the effect of stripper plate.Along with the increase of pressure, sealing function is also more and more stronger.Described sealing member 18 is arranged on the outside of filter pocket openings upper end, also can be positioned at the inboard of upper end.Consider the problem of the inner ring pressurized adhesion of rubber seal, sealing member 18 preferably is located at the outside of open upper end.Inner ring is because the obstruct of filter pocket material and can adhesion like this, and removing the back sealing member when pressure opens easily, reinstatement.The insider understands, sealing member is 8 forms that also can make sealed strip also, is arranged on the stripper plate 16 corresponding to the upper end of filter pocket openings, and adjacent stripper plate 16 allows sealed strip clamp filter pocket openings when closing up.Also can establish independent enclosed mechanism, soon filter bag is being sealed before the pressurization or after the pressurization.
Can vertically hang filter bag 17 with simple hangar system (not shown), this hangar system can be born all or part of weight that filter bag is equipped with untreated sludge.When only bearing part weight, drop at the bottom of the filter bag on the bottom of casing 20.As a kind of selection, hangar system can be moved, filter bag is moved apart casing 20.The switching mechanism of filter bag is also comparatively simple, and for example interior the or outer bottom at filter bag is a rope, rolls the upset that rope just can be realized filter bag when needing, thereby mud cake wherein is discharged on the transfer roller, realizes continuous production.Also can adopt other switching mechanism, make the whole upset of pressing mechanism, these all drop in the spiritual scope of the present utility model.
Fig. 3 shows a kind of form of implementation of the energy storage that cooperates with pressing mechanism 6, it is made up of pressure spring 15 ', when 5 pairs of pressing mechanisms 6 of pressure exerting arrangement of hydro-cylinder and so on are exerted pressure, pressure spring 15 ' is compressed and accumulation of energy, after reaching nominal stroke and pressure, hydro-cylinder is locked with hydraulic control one-way valve, and hydro-pump quits work.Also can will dispose pressing mechanism 6 one side locks of hydro-cylinder with other locking gear, this moment, compressed pressure spring 15 ' was exerted pressure and work done to the opposite side of pressing mechanism 6, finished follow-up extrusion process, thereby reached energy-conservation purpose.Certainly, if adopt the screw type top press, but because thread screw self-locking at any time just needn't have been established locking gear.Consider that wearing and tearing were bigger when the screw type top press was worked under superpressure, efficient is not high, so preferably adopt hydraulic efficiency plant.Described rated pressure is looked the sludge quality difference and is adjusted.
Fig. 4 shows the another kind of form of implementation of the energy storage that cooperates with pressing mechanism, and it has adopted pressurized gas elastic device 15 ", its principle of work is the same.In addition, described energy storage can be the combination of above-mentioned two kinds of forms of implementation.
In addition, as a kind of improvement to equipment shown in Figure 1, a plurality of pressing mechanisms 6 can be set, their cycle operation, for example when a pressing mechanism when a station is accepted the mud of divider 4, at least one pressing mechanism is extruded on another station, and the pressing mechanism of finishing extruding then carries out discharging at unloading station, can further improve the efficient of equipment like this.
Test shows, advantage of the present utility model clearly, its dehydration power consumption per ton is between 15-18 kilowatt, moisture percentage in sewage sludge is reduced to below 30% simultaneously, and the adhesion of mud cake discord filtering material.In addition, equipment of the present utility model does not need great amount of investment or other utility appliance, handles mud continuously for industrialization good terms of settlement is provided.
Should be appreciated that it is exemplary and nonrestrictive more than describing.For having read those skilled in the art described above, many embodiment except given example and application will be conspicuous.Protection domain of the present utility model determine should not be limited to above description, but should determine with reference to follow-up claim and whole whole schemes that are equal to, can predict and expect that should give such claim.
Claims (10)
1. a device for dehydrating sladge waste (1) comprising:
(a) be used to carry the slurry conveying machine structure (3) of pending water-containing sludge (9);
(b) distributor gears (4) that joins with described slurry conveying machine structure;
(c) at least one admits the container from the mud of described distributor gears, and described at least one container can seal and variable volume;
(d) pressing mechanism (6) is used for the water-containing sludge of squeeze receptacle;
(e) pressure exerting arrangement (5) is used for described pressing mechanism (6) is exerted pressure;
It is characterized in that: described pressing mechanism (6) comprises a plurality of apart from one another by the movable stripper plate of opening (16), described at least one container is flexible filter bag (17), each filter bag (17) is placed between the isolated stripper plate (16), and the opening part of each filter bag is provided with closing device (18).
2. equipment according to claim 1 is characterized in that: described pressure exerting arrangement (5) applies described pressing mechanism (6) and is not less than 15Kg/cm
2Pressure.
3. equipment according to claim 1 is characterized in that: described pressure exerting arrangement (5) is exerted pressure to a side of described pressing mechanism (6).
4. according to claim 2 or 3 described equipment, it is characterized in that: the opposite side of described pressing mechanism is provided with energy storage (15).
5. equipment according to claim 4 is characterized in that: described energy storage is pressure spring and/or pressurized gas elastic device.
6. equipment according to claim 1 is characterized in that: described pressure exerting arrangement is a hydro-cylinder.
7. equipment according to claim 1 is characterized in that: described movable stripper plate is provided with the device of leaking water (23).
8. equipment according to claim 4, it is characterized in that: described pressure exerting arrangement (5) is locked by a locking gear after described pressing mechanism (6) is applied to nominal stroke and pressure, finishes extrusion process by the energy storage (15) of the opposite side that is positioned at described pressing mechanism afterwards.
9. equipment according to claim 1 is characterized in that: the hanging mechanism and the switching mechanism that also further comprise described filter bag.
10. according to claim 1 or 9 described equipment, it is characterized in that: the transfer roller (8) that also is provided with the transportation dewatered sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200796872U CN201198463Y (en) | 2008-03-31 | 2008-03-31 | Sludge dewatering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200796872U CN201198463Y (en) | 2008-03-31 | 2008-03-31 | Sludge dewatering equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198463Y true CN201198463Y (en) | 2009-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200796872U Expired - Fee Related CN201198463Y (en) | 2008-03-31 | 2008-03-31 | Sludge dewatering equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201198463Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514073A (en) * | 2009-03-19 | 2009-08-26 | 山东省科学院新材料研究所 | Sludge pressing dewatering processing device |
| CN102701563A (en) * | 2012-06-15 | 2012-10-03 | 河海大学 | Water engineering silt and sludge circulating dewatering equipment |
| CN104803577A (en) * | 2015-04-23 | 2015-07-29 | 上海交通大学 | Rapid dehydration device for mud with high water content |
| CN105645722A (en) * | 2016-03-02 | 2016-06-08 | 普利资环境科技（苏州）有限公司 | Feeding device of sludge drying equipment |
-
2008
- 2008-03-31 CN CNU2008200796872U patent/CN201198463Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514073A (en) * | 2009-03-19 | 2009-08-26 | 山东省科学院新材料研究所 | Sludge pressing dewatering processing device |
| CN102701563A (en) * | 2012-06-15 | 2012-10-03 | 河海大学 | Water engineering silt and sludge circulating dewatering equipment |
| CN104803577A (en) * | 2015-04-23 | 2015-07-29 | 上海交通大学 | Rapid dehydration device for mud with high water content |
| CN105645722A (en) * | 2016-03-02 | 2016-06-08 | 普利资环境科技（苏州）有限公司 | Feeding device of sludge drying equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20120331 |