CN102108001A - Film pressure thermal dehydration method and equipment for high-moisture sludge - Google Patents
Film pressure thermal dehydration method and equipment for high-moisture sludge Download PDFInfo
- Publication number
- CN102108001A CN102108001A CN2009102488038A CN200910248803A CN102108001A CN 102108001 A CN102108001 A CN 102108001A CN 2009102488038 A CN2009102488038 A CN 2009102488038A CN 200910248803 A CN200910248803 A CN 200910248803A CN 102108001 A CN102108001 A CN 102108001A
- Authority
- CN
- China
- Prior art keywords
- sludge
- mud
- dehydration
- pressure
- moisture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 46
- 230000018044 dehydration Effects 0.000 title claims abstract description 34
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000001192 hot extrusion Methods 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 238000001914 filtration Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 19
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 208000005156 Dehydration Diseases 0.000 description 24
- 239000007787 solid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 239000010801 sewage sludge Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a film pressure thermal dehydration method and equipment for high-moisture sludge, and belongs to the technical field of sludge dehydration. The method is characterized by comprising the following steps of: spreading the sludge subjected to conventional mechanical dehydration into a film of 1 to 10mm, regulating hot extrusion temperature and pressure for partition wall hot extrusion dehydration, separating out moisture in a liquid form, and further applying the sludge after the moisture is separated out. The invention has the advantages that: the energy consumption is low, and the energy utilization rate is high; in the dehydration process, seamless compression is adopted, and a wall-sticking phenomenon of conventional equipment is avoided, so that the whole dehydration process is smooth and feasible; and the process flow is simple and high in feasibility, other substances are not introduced, and the further treatment and recycle of the sludge are not influenced.
Description
Technical field
The invention belongs to the sludge dewatering technical field, relate to a kind of dewatering and equipment of high water content sludge, specially refer to a kind of hot dewatering of diaphragm pressure and equipment of high water content sludge.
Background technology
Mud is the inevitable outcome that town sewage is handled, and water ratio is up to about 97%, its complicated component, and poor stability, easily smelly, must handle timely and effectively.Contain a large amount of organic compositions in the mud, can be converted into resource and be used to realize Sustainable development.Usually the mud after concentrating directly adopts traditional mechanical dehydration method, handle as filter-press dehydration, vacuum hydro-extraction, centrifuge dehydration, screw press dehydration, the dehydrated sludge water ratio is generally about 80%, the water ratio height, volume is big, poor stability can not directly be realized recycling as bio-feritlizer or Energy resources (as the combustion gas of pyrolysis system, semicoke solid etc. or directly burning).
Existing dewatering can not effectively reduce the dewatered sludge water ratio, and its major cause is to lay particular emphasis on the externalities of considering dehydration, has ignored the influence of mud and water combining power.In fact, mud has the feature of slurry attitude thing, and it is same, the liquid admixture has certain stability, could realize solid-liquid separation when applying great applied external force (physics, chemistry).Therefore sludge dewatering efficient and dehydration back water ratio are by the specific physical chemical property decision of moisture in the mud, and the combining form that changes or reduce moisture in the mud is the key that reduces water ratio after the sludge dewatering.Therefore, by adopting new dehydration equipment and method, reduce the bonding force of mud granule and moisture, realization mud dewaters economically and the dehydrated sludge water ratio significantly to reduce be the key of carrying out sludge treatment and recycling.Several mud dewatering methods of introducing below just are being based on this principle proposition.
The open date is on April 30th, 2008, publication number is CN101168467A, application number is that 200710061231.3 patent of invention discloses a kind of mud dewatering method, proposition mixes dewatered sludge with the replacement solvent that is immiscible in water, after stopping layering, thereby mud and solvent mixture are carried out drop liquid solvent removal realization sludge dewatering.This method can reduce water ratio after the sludge dewatering, changes the mud physicochemical property, helps the burning utilization of mud.But the introducing of organic solvent makes mud can not be used as bio-feritlizer, and burns the processing load that has improved tail gas in the pyrolytic process, and therefore, also there is barrier in concrete application.
The open date is on April 18th, 2007, publication number is CN1948192A, application number is that 200610016350.2 patent of invention discloses a kind of dewatering technology of mud and device, propose after the press filtration that mud is aided with that ultrasonic wave is modified, the collaborative electroosmotic dewatering of pressure and adsorption dewatering, thereby realize carrying out alternately of dewatering technology of mud, this technological process multiple dewatering that is coupled, the whole piece complex process equipment is difficult to operation.
To sum up, develop a kind of technology is simple, dewatering efficiency is high mud dewatering method and equipment, economic, the moisture in the dewatered sludge fast reduces moisture percentage in sewage sludge and disposes significant to sludge treatment.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simple and high-efficient dehydration treatment method and equipment of high water content sludge, improves dewatering efficiency, reduces the dehydrated sludge water ratio, for sludge treatment and recycling provide approaches and methods.
Technical scheme of the present invention is to adopt the hot dewatering of diaphragm pressure to carry out removing of high water content sludge moisture, by heat energy and mechanical pressure are acted synergistically on thin layer mud, realize sludge water content fast, efficiently remove, reduce moisture percentage in sewage sludge, be beneficial to subsequent disposal such as sludge incineration, compost.
The hot dewatering of mud diaphragm pressure of the present invention, be after becoming the film of 1mm～10mm through the mud cloth after the conventional mechanical dehydration (as filter-press dehydration, centrifuge dehydration etc.), regulate extrusion temperature and pressure and carry out partition hot extrusion dehydration, moisture is separated out separation with liquid form, and the mud of isolating liquid water further is applied.
The hot dewatering unit of mud diaphragm pressure of the present invention is to become the mud thin layer of thickness to be positioned on the filtering material cloth by film covering device, and filtering material is supported by the rigid filter stock support, is sidelong at mud then and puts the pressurized, heated device.The heating thermal source can adopt waste hot steam, fume afterheat etc., and pressure is applied by device for exerting such as hydraulic efficiency plant, gravity pressurizations, and pressure, temperature can be regulated.By control pressure, temperature and process time, realize separating out of liquid water.The liquid water of separating out is discharged along extruding the water relief outlet.Because water is to separate with liquid form, there is not moisture vaporization evaporative process, no vaporization energy consumption, the thermo-efficiency height, dehydrating effect is obvious, and unit mass sludge dewatering energy consumption reduces, and the dehydrated sludge water ratio is low.
Effect of the present invention and benefit are:
Mud is with the thin layer form thermal dehydration, and the sewage sludge solid concentration gradient is little in the dehydration, and water migration paths is short and migration resistance is little, and energy expenditure is low, the capacity usage ratio height.The heating and pressurizing synergy makes passes through to reduce the mud porosity in dehydration, realize the effective mobility of moisture to the dehydration interface, and has reduced the generation of crust phenomenon, and then has reduced caloic transmission resistance, has realized effective utilization of energy.
Adopt seamless compression in the sludge dewatering process, solved the wall sticking phenomenon that conventional equipment occurs easily in the treating processes, make whole dehydration smoothness feasible.The process flow process is simple, and the feasibility height is not introduced other material, does not influence further treatment and disposal of mud and recycling.
Description of drawings
Accompanying drawing 1 is the hot dewatering schematic flow sheet of the diaphragm pressure of high water content sludge.
Among the figure: 1 dewatered sludge; 2 cloth films; 3 hot extrusions; 4 temperature-adjustment pressure-adjustments; 5 remove water; 6 hot dehydrated sludge.
Accompanying drawing 2 is the hot dehydration equipment structural representations of the diaphragm pressure of high water content sludge.
Among the figure: 7 counterweight posts; 8 pressure counterweights; 9 heating cavities; 10 support cavity; 11 mud samples; 12 filtering materials; 13 filtering material bracing frames; 14 extrude the water relief outlet.
Embodiment
Be described in detail the embodiment of the inventive method and equipment below in conjunction with technical scheme and accompanying drawing.
Embodiment 1: the hot dewatering of the diaphragm pressure of high water content sludge
The hot dewatering process of the diaphragm pressure of high water content sludge comprises: mechanical dehydration mud 1 by 3 processes of the hot extrusion behind temperature-adjustment pressure-adjustment 4, is isolated at last and is removed water 5, the hot dewatered sludge 6 after obtaining handling behind cloth film 2.
Embodiment 2: high water content sludge diaphragm pressure dehydration equipment
High water content sludge diaphragm pressure dehydration equipment workflow is: fix filtering material as 30 orders～60 purpose stainless steel bracing frames 13 on support cavity 10, place on it and have inflexible filtering material 12, as the sintered metal filtration material, the following mud sample 11 of coating thickness 10mm above the filtering material through simple and mechanical pretreated water ratio about 80%, the heating cavity 9 that outside surface size and support cavity 10 interior dimensionss are closely agreed with is positioned over Sludge Surface then, heating cavity 9 Heating temperatures can take different modes to regulate according to the different heating mode, pressure is by placing the quantity regulating of the pressure counterweight 8 on the counterweight post 7, and the extrusion water after material 12 filters is after filtration discharged through extruding water relief outlet 14.
Gordian technique one of the present invention is to adopt the thin layer paint-on technique, reduces the heat and mass resistance of mud thermal dehydration process, reduces water migration paths and sludge blanket solids concn gradient in the mud, improves heat transfer efficiency, increases capacity usage ratio.
Gordian technique two of the present invention is to adopt flat heated extruding thin layer mud, destroy the structure of the mud granule that coats water, change the extracellular polymer properties that stops liquid water to analyze, liquid water is separated out, changed the high-energy input situation that traditional method makes moisture separate out by the vaporization evaporated form.Extrusion process reduces top layer crust thickness by the pressure effect, reduces the process energy consumption, and then realizes the reduction of the water ratio of dehydrated sludge.
Gordian technique three of the present invention is to have reduced the processing burden of expressed water by filtering the suspended solid amount in the reduction expressed water, has improved the solid recovery rate of dehydration and the efficient of process dehydration.
The invention provides a kind of new mud dewatering method and equipment,, realize raising, and the raising of dehydrated sludge solid content of sludge dewatering efficient, and technological process is simple, helps applying in the actual production process by this technological method and equipment.
Claims (2)
1. the hot dewatering of the diaphragm pressure of a high water content sludge, it is characterized in that: after will becoming to be no more than the film of 10mm through the mud cloth after the conventional mechanical dehydration, regulate extrusion temperature and pressure and carry out partition hot extrusion dehydration, moisture is separated out separation with liquid form, the mud after obtaining handling.
2. the hot dehydration equipment of the diaphragm pressure of a high water content sludge, it is characterized in that: the mud thin layer of the thickness 1mm～10mm that will be become by film covering device cloth is positioned on the filtering material, filtering material is supported by the rigid filter stock support, is sidelong at mud and puts the heating and pressurizing device; The heating thermal source can adopt waste hot steam, fume afterheat etc., and pressure is applied by device for exerting such as hydraulic efficiency plant, gravity pressurizations; By control pressure, temperature and hot extrusion dewatering time, the water ratio of back mud is handled in control, and the moisture of extruding is discharged via extruding the water relief outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102488038A CN102108001A (en) | 2009-12-24 | 2009-12-24 | Film pressure thermal dehydration method and equipment for high-moisture sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102488038A CN102108001A (en) | 2009-12-24 | 2009-12-24 | Film pressure thermal dehydration method and equipment for high-moisture sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102108001A true CN102108001A (en) | 2011-06-29 |
Family
ID=44172296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102488038A Pending CN102108001A (en) | 2009-12-24 | 2009-12-24 | Film pressure thermal dehydration method and equipment for high-moisture sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102108001A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608292A (en) * | 2012-03-09 | 2012-07-25 | 北京建筑工程学院 | Sludge specific resistance measuring apparatus |
| CN106546067A (en) * | 2015-09-18 | 2017-03-29 | 海南椰国食品有限公司 | Bacterial cellulose gel film replaces low temperature integrated dry drying system |
| CN107417069A (en) * | 2017-09-12 | 2017-12-01 | 云南飞隆劳尔设备有限公司 | A kind of filter cartridge type sludge concentration device automatically controlled |
-
2009
- 2009-12-24 CN CN2009102488038A patent/CN102108001A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608292A (en) * | 2012-03-09 | 2012-07-25 | 北京建筑工程学院 | Sludge specific resistance measuring apparatus |
| CN102608292B (en) * | 2012-03-09 | 2014-07-23 | 北京建筑大学 | Sludge specific resistance measuring apparatus |
| CN106546067A (en) * | 2015-09-18 | 2017-03-29 | 海南椰国食品有限公司 | Bacterial cellulose gel film replaces low temperature integrated dry drying system |
| CN107417069A (en) * | 2017-09-12 | 2017-12-01 | 云南飞隆劳尔设备有限公司 | A kind of filter cartridge type sludge concentration device automatically controlled |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020244524A1 (en) | Comprehensive recycling device for campus kitchen waste and use method thereof | |
| CN100542652C (en) | Dewatering technology of mud and device | |
| CN105523555B (en) | A kind of activated carbon preparation method of sludge class shale biomass | |
| CN104150726B (en) | A kind of sludge treatment equipment of minimizing and sludge drying method | |
| CN104326634B (en) | A kind of compound sludge treatment technique | |
| CN101525209A (en) | Mechanical dehydration half-drying system for sludge | |
| Xiao et al. | Process control for improving dewatering performance of sewage sludge based on carbonaceous skeleton-assisted thermal hydrolysis | |
| CN102108001A (en) | Film pressure thermal dehydration method and equipment for high-moisture sludge | |
| CN106732186A (en) | Reactor, the continous way system and method for hydro-thermal dewater treatment high-moisture percentage organic matter | |
| CN111646670A (en) | Multistage dehydration method and device | |
| CN107982970B (en) | Filter plate for plate-frame filter pressing device and preparation method of filter structure of filter plate | |
| CN104083918A (en) | Screw squeezing dewaterer | |
| CN206366378U (en) | The reactor and continous way system of hydro-thermal dewater treatment high-moisture percentage organic matter | |
| CN105036518A (en) | Deep dehydration method for excess sludge of urban sewage plant | |
| CN107930200A (en) | Plate compression unit and plate compression device | |
| CN204981533U (en) | Mud explains dehydration mummification system of taking care of | |
| CN110156299A (en) | A kind of municipal sludge broken wall and brick-making method | |
| CN102964050A (en) | Sludge thin layer drying equipment | |
| Jiang et al. | Experimental study on hydrothermal drying for sewage sludge in large-scale commercial plant | |
| CN205088090U (en) | Mud explains dehydration mummification system of taking care of | |
| CN105152515A (en) | Sludge dehydration equipment based on vacuum electroosmosis | |
| JP2010082620A (en) | Hydrothermal decomposition device and method of biomass and system for manufacturing organic raw material using biomass raw material | |
| CN204934179U (en) | A kind of restaurant garbage treating system | |
| CN207468445U (en) | Earthworm enzymatic sludge high-drying cryogenic dewatering carbonization treatment system | |
| CN202968337U (en) | Thin layer drying device for sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110629 |