CN102046540B - Sludge treatment process - Google Patents
Sludge treatment process Download PDFInfo
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- CN102046540B CN102046540B CN200980121190XA CN200980121190A CN102046540B CN 102046540 B CN102046540 B CN 102046540B CN 200980121190X A CN200980121190X A CN 200980121190XA CN 200980121190 A CN200980121190 A CN 200980121190A CN 102046540 B CN102046540 B CN 102046540B
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- mud
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
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- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Provided are means which enable both efficient treatment of sludge and reutilization of treated sludge as a resource. Namely, a sludge treatment process characterized by comprising the step (A) of molding sludge into products having surface-surface distances of 2 to 20mm and the step (B) of bringing the products into contact with liquefied dimethyl ether to extract water from the products; and a sludge treatment system characterized by being provided with a molding machine for molding sludge into products having surface-surface distances of 2 to 20mm and an extraction tank for bringing the products into contact with liquefied dimethyl ether to extract water from the products.
Description
Technical field
The present invention relates to the treatment process of mud, be specifically related to can be efficiently with the sludge dewatering of high-moisture and carry out deodorization and handle, can promote as the treatment process of utilizing again of thermal power generation with fuel such as fuel.
Background technology
As the treatment process of the mud that produces by sewage treatment equipment, generally adopt mechanical dehydration to handle after with its burning and will burn the method that grey landfill is handled in the landfill disposal field.But, in this method, need carry out pre-treatment that concentration, processed, drying treatment appropriate combination are formed during burning to a large amount of moisture in the mud, exist processing to need the problem of lot of energy.In addition, with respect to a large amount of dischargings as a kind of sewage sludge of mud, landfill is kept at the limit really, so also hope to develop the technology that turning sludge into fuel etc. utilizes again that is used for.
The treatment process of basic mud is following.At first, carry out mechanical dehydration with filter, separating centrifuge, belt press etc., process the sludge filter cake of about moisture concentration of about 80% for the mud after concentrating through operations such as sedimentation, centrifugal settlings.This sludge filter cake landfill in final processing, is perhaps carried out burning disposal with burning facility, with remaining burning ash landfill in final processings field.
In this a series of technology, what require efficient and completeness most is the mechanical dehydration operation.This is because being subtracted Rong Huaer as far as possible through the sludge filter cake of dehydration becomes and handle easily, and the addition of ignition dope etc. reduces when burning, and perhaps can realize the subsequent disposal that the energy aspect is favourable.
But general mud is 75～85% according to the amount of moisture in the mud of its proterties after mechanical dehydration is handled.Water in the mud is close to the mud particle; Its form generally is divided into (1) interstitial water (being full of the spatial water that the mud particle surrounds), (2) capillary combination water (water that is present in the slit etc. of mud particle), (3) surface attachment water (being attached to the water of mud particle surface), (4) internal water (forming the enchylema of the cell of mud particle); Wherein think can be isolating through mechanical dehydration be interstitial water, capillary combination water (general designation interstitial water), be difficult to separate as the so-called constraint of surface attachment water and internal water through mechanical dehydration.
On the other hand; In modification method in the oil of one of dehydration technique (reference example such as Japanese Patent Laid are opened 2000-290673 communique (patent documentation 1)); The solid of supposing to contain moisture is a coal; With the temperature more than 150 ℃ the moisture solid that contains of slurryization in oil is carried out heat treated, make by this to contain moisture solid moisture evaporation.Through will be under service temperature hardly the oil of evaporated liquid shape as heating medium, thereby have only water optionally to evaporate, so water vapour can be not diluted, the density of the vaporization heat that water vapour had can not descend.Therefore, the modification method is considered to the vaporization heat that recycle-water steam is efficiently had in the oil.Especially about the dehydration of coal, in existing method, the required energy of modification method is considered to minimum in the oil.Yet, in the oil in the modification method,, need carry out spinning and be higher than the heating operation under 150 ℃ the temperature for the oil that boiling point is higher than water separates (de-oiling) with coal, so the energy consumption in the de-oiling operation surpasses the energy consumption in the dehydration procedure, energy-conservation changing into is problem.
Patent documentation 1: Japanese Patent Laid is opened the 2000-290673 communique
The summary of invention
The object of the present invention is to provide can realize handling mud, particularly high-moisture mud efficiently in energy-conservation and make its can be after processing as the means of resource reutilization.
The inventor is based on above-mentioned purpose and repeatedly after the research, notices dme (DME) and also can easily not gasify and change gas into from liquid (liquefaction thing) even do not set harsh condition in nature at it.But, if make dme act on mud, can realize the effect of extraction dehydration operation to a certain degree, but still remaining a large amount of water.When this a large amount of water is sloughed in extraction, also be difficult to make dme to infiltrate in the dewatered cake (block) of mud even apply huge pressure.So the inventor finds behind the trial and error repeatedly, after making mud reach certain thickness, feed dme, it is dewatered with physicochemical mode counter-diffusion.When finding to extract dehydration operation like this, handle as pretreated shaping through carrying out, can be efficiently with sludge dewatering, and separate the material dehydration that obtains to the degree that can be used as resources such as fuel, thus accomplished the present invention.
The present invention provides the technical scheme of following (1)～(4).
(1) a kind of treatment process of mud is characterized in that, comprises following operation (A) and (B):
(A) mud is formed, make it become surface spacing from the operation that is the molding of 2～20mm;
(B) this molding is contacted with the liquefaction thing of dme, extract the operation of the moisture in this molding.
(2) like the treatment process of (1) described mud, wherein, the shaping of said mud is installed on the shaping appts in the downstream of sending the mud pipe through employing extrusion molding carries out, and said shaping appts is the device that can the molding after being shaped be pressed into continuously container.
(3) a kind of method of manufacture of fuel is characterized in that, when mud is carried out processed, comprises following operation (A) and (B):
(A) mud is formed, make it become surface spacing from the operation that is the molding of 2～20mm;
(B) operation that said molding is contacted with dme.
(4) a kind of treatment system of mud; It is characterized in that, comprise mud formed and make it become surface spacing contacting the extraction tank that extracts the moisture in this molding with the liquefaction thing that makes dme with said molding from the forming mill that is the molding of 2～20mm.
If employing the present invention; The contact area of dme and mud is increased; Through being restricted to the thickness that can spread mutually processing efficiency is improved; So can under energy-conservation condition, dewater efficiently, and can make the treatment condition that adopt dme constant and handle continuously through shaping.
The simple declaration of accompanying drawing
Fig. 1 is the explanatory view of an example of expression treatment system of the present invention.
Fig. 2 is the explanatory view of an example of expression treatment system of the present invention.
Fig. 3 is the explanatory view of an example of expression treatment system of the present invention.
Fig. 4 is the explanatory view of an example of expression treatment system of the present invention.
The explanation of symbol
A～C dewatering system
11 mud
12 forming mills
13 moldinies
14 extraction tanks
15,26 dme (liquid)
16 retention basins
Mud after 17 dehydrations
18 send the mud pipe
The dme that contains moisture in 19 mud
20 distillation towers
Moisture in 21 mud
22,24 dme (gas)
23 compressors
25 water coolers
27 heat exchangers
28 liquid-feeding pumps
The mode that carries out an invention
Mud as object among the present invention is meant the mud of being discharged by the equipment that waste water such as domestic waste water or trade effluent are handled (sewage treatment equipment), also comprises the dewatered cake of mechanically dewatering and getting.The method that is obtained dewatered cake by mud for example has the method (filtering and concentrating, solid-liquid separation, squeezing etc.) of using the device that possesses filter, screw rod, whizzer, roller etc.Dewatered cake used among the present invention can suitably be selected to obtain to these methods, better is that the combination filtering and concentrating obtains with squeezing.As the device that is used to make dewatered cake, can give an example belt press, centrifuge, screw press etc.It generally is 75～85 weight % (about 78 weight %) that moisture ratio in the mud (comprising dewatered cake) (moisture in mud shared part by weight) is considered to.
Dewatering system of the present invention relates to the system that utilizes dme that mud is dewatered.
The boiling point of dme under 1 normal atmosphere is-24.8 ℃, is gas under normal atmosphere at-10 ℃～50 ℃.The method of manufacture of high efficiency dme and manufacturing installation for example disclose in each communique of each communique of japanese patent laid-open 11-130714 communique, japanese patent laid-open 10-195009 communique, japanese patent laid-open 10-195008 communique, japanese patent laid-open 10-182527 number～japanese patent laid-open 10-182535 number, japanese patent laid-open 09-309850 number～japanese patent laid-open 09-309852 number, japanese patent laid-open 09-286754 communique, japanese patent laid-open 09-173863 communique, japanese patent laid-open 09-173848 communique, japanese patent laid-open 09-173845 communique etc. to some extent, can easily obtain dme according to the technology that wherein discloses.
In addition, dme also can use for the combinations of substances of gas down with other normal temperature and pressure conditionses.Be the material of gas down as normal temperature and pressure conditions; Be meant under 25 ℃ and 1 atmospheric condition and be the material of gas; Better be under 0 ℃ and 1 atmospheric condition, to be the material of gas, preferably be gas under 25 ℃ and 1 atmospheric condition and under 0 ℃ and 1 atmospheric condition, also be the material of gas.For example, but exemplified by methyl ethyl ether, formaldehyde, ketene, acetaldehyde, butane, propane etc., and they can use a kind or mix more than 2 kinds and use.
The treatment process of mud of the present invention is characterised in that, comprises following operation (A) and (B):
(A) mud is formed, make it become surface spacing from the operation that is the molding of 2～20mm;
(B) this molding is contacted with the liquefaction thing of dme, extract the operation of the moisture in this molding.
If adopt treatment process of the present invention, when then mud being carried out processed, through carrying out above-mentioned operation (A) and (B), dme is fed in the mud and makes it with the counter-diffusion of physical chemistry mode as extracting medium, can be with sludge dewatering.Even the present invention utilizes dme not set in nature at it that harsh condition also can easily gasify and changes this point of gas from liquid (liquefaction thing) into.
In the operation (A), mud is formed, make it become surface spacing from being 2～20mm, better being the molding of 4～10mm.By this, not only can mud fully be dewatered, and not receive the influence of the moisture in the mud, make down constant in the operation (B) for the contact conditions of the material of liquid with normal temperature and pressure.Here, " surface spacing from " is meant the shortest distance in the MV of the distance (length of diameter) between a certain surface of molding and the surface of opposition side (opposite of approximate vertical direction)." a certain surface of molding " and " surface of opposition side " are meant in the follow-up operation (B) contact surface with dme." the shortest distance " is meant; For example under the situation of the molding of column (rope form) (cross section can be any in circle or the Polygons), short side is " surface spacing leaves " in the distance between the bottom surface of column and the distance of upper surface (highly) and the post part (cross section refers to diameter when circular)." MV of distance " is meant, for example under the situation of atypic molding, the MV of the shortest distance and the longest distance is the MV of distance.
The shape of molding does not have special demands, the prismatics such as rectangular parallelepiped, Polygons of can giving an example, round tube type, rope form, bar-shaped etc.
The mode that is shaped is not special to be limited, and can give an example extrusion molding, compression molding etc. wherein better are extrusion moldings.Under the situation about forming through extrusion molding, better be to carry out through the shaping appts (extrusion forming device) that is installed on the downstream of sending the mud pipe.Said shaping appts better is the device that is pressed into container serially.
In the operation (B), this molding is contacted with dme, extract the moisture in this molding.
The method of contact is not special to be limited, and can give an example being accommodated in the method that contacts in the container for the dme of the material of gas and the molding of mud down as normal temperature and pressure conditions.The ratio of the amount of molding and liquid can suitably confirm, for example better is moisture (about the common 78 weight %) dissolving in making mud and obtaining more than the amount that the liquid Chemistry and Physics Institute of high moisture content needs at least.That is better be to make as normal temperature and pressure conditions to contact with the weight ratio of hydrous matter down, with 233: 1～233: 50 for the liquid of the dme of the material of gas.In addition, water is 7.2 weight % for the saturation solubility of dme liquefaction thing in the time of 20 ℃, so if convert with the amount of moisture in the above-mentioned mud, then can suitably confirm with respect to the amount that the concentration of dme reaches more than the 9 weight % according to mud.In addition, there is not special stipulation with respect to the upper limit of the concentration of dme for molding, but the amount of the molding contact of dme difficulty that may become when very few, so for example can be made as below the 20 weight %.
Here, contact with molding, need dme be kept liquid state in order to make dme.Keep not special qualification of method of liquid state, it is desirable to keep the method for liquefaction thing with saturation vapour pressure.Temperature condition when particularly contacting it is desirable to-10 ℃～50 ℃, better be suitably to set in 0～40 ℃ the scope.Be difficult to lump together by kind and the conditional decisions such as amount, the way of contact of hydrous matter with the liquefaction thing duration of contact (dewatering time), can be set at the time that moisture in the hydrous matter fully is dissolved in the thing that liquefies.
The condition except that temperature and pressure when the liquefaction thing of dme such as the contact amount of the for example way of contact, liquefaction thing, duration of contact contacts with molding can suitably be set at the condition that the moisture that makes in the hydrous matter is dissolved in this liquefaction thing.The way of contact can be that molding impregnated in the liquefaction thing, makes liquefaction stream cross any method that is adopted in the common evaporation such as molding.In addition; Through molding being filled in a plurality of containers; So that the way of contact that the liquefaction thing carries out counter current contact makes the liquefaction thing of dme contact with molding, thereby reclaim, evaporate after making the water cut of the thing that liquefies saturated, can reduce and be used for dewatered energy.
The liquefaction thing that makes dme is with after the molding of mud contacts, and the mixture of the moisture in the liquefaction thing of dme and the molding separates with the mud (dehydrated sludge) through dehydration.Their separation can be adopted ordinary methods such as solid-liquid separation.As the method for solid-liquid separation, the distribution handled based on the layering of leaving standstill, based on film of can giving an example etc.The method of solid-liquid separation is not special to be limited, and as an example, can give an example liquid layer with being installed on container or being independent of the attraction such as pump of container and the method for removing.The dehydrated sludge that obtains like this is through dehydration, and stench reduces, and can be used for other purposes, for example the fuel of thermal power generation usefulness or boiler etc., cement material etc.
The liquefaction thing of dme and the mixture of the moisture in the molding can also can further only extract dme from this mixture as required directly as liquid waste disposal.The extraction of dme can utilize the gasification phenomenon of dme to carry out.
Gasification is to instigate liquid (liquefaction thing) to become gas.Normal temperature and pressure conditions in the liquefaction thing of high moisture content is down that the gasification of the material of gas can be through comparing operation (B) raising temperature condition or reducing pressure condition and carry out.
Improving under the situation of temperature condition, better is to make its temperature that rises to the boiling point that is higher than dme, utilizes among the present invention to be the material of gas under the normal temperature and pressure conditions, so usually can be near normal temperature, promptly near the temperature condition gasified of outside air temperature.That is, need not heating, only return to the normal temperature state and just can gasify through the state of cooling from operation (B).As the temperature condition of gasification, also according to the liquefaction thing that uses with pressure condition and different, better be normal temperature state ,-50 ℃～25 ℃, good especially is-25 ℃～10 ℃.Make under the situation of pressure condition decline, its condition can suitably be confirmed according to temperature condition for being lower than saturation vapour pressure.
Processing product after the mixture of the liquefaction thing of dme and the moisture the molding extracts dme is generally mephitic liquid.Also can handle as required and utilize again this liquid as water.
In addition, can also the dme vapour that extracted be liquefied once more and sends back in the system and utilize.Liquefaction can realize through compare reduction temperature condition or pressurize condition with gasification.
The treatment system of mud of the present invention is characterised in that, comprises forming mill and extraction tank at least.Forming mill is used to implement the operation (A) of treatment process of the mud of the invention described above, and extraction tank is used to implement operation (B).
Forming mill is used for mud is formed, and makes it become surface spacing from the molding that is 2～20mm.(A) is said for the operation of molding condition such as above-mentioned treatment process of the present invention.As the example of forming mill, the extrusion shaper of can giving an example.As extrusion shaper, can give an example for example possesses the forming mill that send the mud pipe that mud is delivered to extrusion shaper.It better is device to carrying out extrusion molding through the mud that send the mud pipe to send here continuously and can the molding of gained being pressed into continuously.
Extraction tank is to be used for making the liquefaction thing of dme to contact the groove of the moisture that is extracted into body with said molding.The condition of extracting such as the operation (B) of above-mentioned treatment process of the present invention are said.Extraction tank is realized with the adjustment unit of the temperature and pressure that suitably possesses the state that is used to keep dme to be liquid, the groove of for example heat exchanger usually.In addition, can by more than 2 independently groove constitute, also can they be made as the groove of connection.In addition, as described in the way of contact of dme, can be considered to the dipping of body in dme, circulation etc., better be circulation, wherein is more preferably counter current contact.
In the treatment system of mud of the present invention, can also comprise distillation tower (distiller).By this, can be with dme as vapour from dme liquefaction thing and the mixture separation that derives from the moisture of mud.Distiller is used for the adjustment unit of the temperature and pressure of dme gasification, the device of for example heat exchanger are realized to possess.
Treatment system of the present invention better is also to comprise compressor and water cooler.By this, can the vapour through the isolating dme of distillation tower be liquefied once more, as the recycling of dme liquefaction thing.Compressor is used for waiting the dme vapour compression that said distillation tower gasification is extracted through pressurization.Compressor is used for the adjustment unit of the temperature and pressure of dme gasification, the device of for example heat exchanger are realized to possess.
Water cooler is used to cool off the dme through compressor compresses.The condensation of dme vapour through cooling, liquefaction.Water cooler is realized to possess the groove of adjustment unit of temperature and pressure that is used under the normal temperature and pressure conditions being the material liquefaction of gas usually.
In the treatment system of the present invention, extraction tank and the distiller, compressor and the water cooler that are provided with as required can be connected in series through the pipeline that possesses pump as required successively.
In addition, can also comprise as required with can be supplied to mode in the system take under the normal temperature and pressure conditions be the material of gas retention basin (surge tank), be used for thermoregulator heat exchanger (27), be used for the processing product of squeezing extraction tank before delivering to distiller squeezing machine, to remove under the normal temperature and pressure conditions of processing product of said squeezing machine be the remover of the material of gas, the liquid-feeding pump (28) that is used for the liquid in the system or gas are seen off etc.
With reference to Fig. 1～Fig. 3 the structure of treatment system of the present invention is described with the treatment process that adopts this device.At first, after the treatment system A of Fig. 1 described, only to describing with not existing together of treatment system A among the treatment system B of Fig. 2, equally only to describing with treatment system B distinct portions among the treatment system C of Fig. 3.
Among the treatment system A of Fig. 1, mud 11 obtains the molding 13 of mud through after sending mud pipe 18 by input forming mill 12.Molding 13 is sent to extraction tank 14, contacts with a routine dme (liquid) 15 that as normal temperature and pressure conditions is the material of gas down.In the extraction tank 14, the moisture stripping in the molding 13 is to dme.Dme (liquid) 15 is supplied to extraction tank 14 from retention basin 16.After extraction in the extraction tank 14 finished, the mud 17 after product, the i.e. dehydration was handled in acquisition, and the dme 19 that contains the moisture in the mud is discharged from.Mud 17 after this dehydration is not only through dehydration, and by fully deodorization, stench reduces.
Among the treatment system B of Fig. 2, the dme 19 that contains the moisture in the mud is sent to distillation tower 20.In the distillation tower 20, contain most dme (liquid) gasification in the dme 19 of the moisture in the mud, it is separated as handling products to dissolve the moisture that derives from mud 11 (moisture in the mud) 21 that is stored in the liquefied dimethyl ether.The stench that moisture 21 in this mud not only derives from mud reduces, and through dehydration.
Among the treatment system C of Fig. 3; Be compressed machine 23 compressions through distillation tower 20 isolating dme (gas) 22; Gas 24 after the compression liquefies through water cooler 25 coolings, and the dme of seeing off from water cooler 25 (liquid) 26 is sent to retention basin 16 once more, at system's internal recycle.
Above-mentioned treatment system of the present invention can be used as the treatment unit of mud.Treated mud can be used as thermal power generation with fuel such as fuel in treatment system of the present invention.
Embodiment
Embodiment 1
The mincer that mud is used as extrusion shaper is shaped continuously, obtains the columniform molding (dewatered sludge) of surface spacing from 4mm (diameter 4mm is about length number cm).
Use the deodorization of dewatering of the device of Fig. 4 to handle.3.2kg is configured as the dewatered sludge input internal diameter 15cm about diameter 4mm, length number cm, the extraction tank cylindraceous of length 57cm (volume 10L), makes it be air-tight state.
(maximum liquor charging amount is 0.4m to dme (liquid) 15 through liquid-feeding pump from the DEM retention basin 16 that can store 150L at most
3/ h) 28 deliver to extraction tank, be sent to flashing tower 20 behind the moisture in the absorption mud.The temperature of flashing tower 20 is regulated through heat exchanger 27.The inside of flashing tower 22 and water cooler 25 is full of the water of normal temperature, is soaked with the spiral helicine pipe of internal diameter 15mm, and the dme 19 that contains the moisture in the mud carries out heat exchange, dme evaporation during through spiral helicine pipe.The water cut of the processing product (mud 17 after the dehydration) of discharging from extraction tank 14 and the measured value of concentration before dehydration of hydrogen sulfide, thiomethyl alcohol, methyl-sulfide and methyl disulfide are shown in table 1.
Also have, distillation back gasification in the flashing tower 22 and dme (gas) 22 (maximum gas pushing quantity is 30Nm through compressor 23
3/ h) after the pressurization, the water liquefaction through normal temperature in water cooler 25 becomes dme (liquid) 26, is filled in DME retention basin 16, can utilize again.
Comparative example 1
Except mud not being shaped and directly utilizing, likewise dropping into extraction tank with embodiment 1 and carry out processed.
The analytical results of table 1 dehydrated sludge
Under the state that mud is not shaped, carried out in the comparative example 1 of dehydration experiment, the water cut of mud is 79% before processed, becomes 38% after the processed of employing dme.On the other hand, among the embodiment 1, can know that by the result of table 1 water cut of mud is 79% before processed, be reduced to 8% after adopting the processed of dme.
In addition, about foul smell, can confirm that the foul smell of thiomethyl alcohol and methyl disulfide significantly is inhibited among the embodiment 1.
Claims (4)
1. the treatment process of a mud is characterized in that, comprises following operation (A) and (B):
(A) mud is formed, make it become surface spacing from the operation that is the molding of 2～20mm;
(B) this molding is contacted with the liquefaction thing of dme, extract the operation of the moisture in this molding.
2. the treatment process of mud as claimed in claim 1; It is characterized in that; The shaping of said mud is installed on the shaping appts in the downstream of sending the mud pipe through employing extrusion molding carries out, and said shaping appts is the device that can the molding after being shaped be pressed into continuously.
3. the method for manufacture of a fuel is characterized in that, when mud is carried out processed, comprises following operation (A) and (B):
(A) mud is formed, make it become surface spacing from the operation that is the molding of 2～20mm;
(B) operation that said molding is contacted with the liquefaction thing of methyl ether.
4. the treatment system of a mud is characterized in that, comprises mud formed and make it become surface spacing contacting the extraction tank that extract moisture in this molding with the liquefaction thing that makes methyl ether with said molding from the forming mill that is the molding of 2～20mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-146541 | 2008-06-04 | ||
| JP2008146541A JP5731733B2 (en) | 2008-06-04 | 2008-06-04 | Sludge treatment method |
| PCT/JP2009/060239 WO2009148113A1 (en) | 2008-06-04 | 2009-06-04 | Sludge treatment process |
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| Publication Number | Publication Date |
|---|---|
| CN102046540A CN102046540A (en) | 2011-05-04 |
| CN102046540B true CN102046540B (en) | 2012-11-14 |
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| CN200980121190XA Expired - Fee Related CN102046540B (en) | 2008-06-04 | 2009-06-04 | Sludge treatment process |
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|---|---|
| JP (1) | JP5731733B2 (en) |
| CN (1) | CN102046540B (en) |
| WO (1) | WO2009148113A1 (en) |
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| JP5276631B2 (en) * | 2010-08-09 | 2013-08-28 | 一般財団法人電力中央研究所 | Sediment processing method and extraction apparatus |
| JP2014108408A (en) * | 2012-12-03 | 2014-06-12 | Mitsubishi Heavy Ind Ltd | Dehydration treatment apparatus for pcb contaminated sludge or residues, and pcb processing system using the same |
| MX2016001056A (en) * | 2013-08-02 | 2016-04-25 | Hitachi Ltd | Solid/liquid separation apparatus, and method for same. |
| JP2015188816A (en) * | 2014-03-28 | 2015-11-02 | 株式会社クボタ | absorption dehydration apparatus and method |
| CN105330124B (en) * | 2015-11-25 | 2018-04-24 | 东南大学 | A kind of method and device of microwave radiation solvent extraction combination deep dehydration for biosolids material |
| CN105330125B (en) * | 2015-11-27 | 2018-05-15 | 东南大学 | A kind of method and device of Ultrasonic Radiation solvent extraction combination deep dehydration for biosolids material |
| CN107857457A (en) * | 2016-09-22 | 2018-03-30 | 北京中科国通环保工程技术股份有限公司 | For reducing the method and system of the water content in the aqueous and material of solid |
| CN111547990A (en) * | 2020-05-15 | 2020-08-18 | 河海大学 | Method for dissolving organic matters and water in municipal sludge by using liquid dimethyl ether and separating and dehydrating |
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| JP3957652B2 (en) * | 2003-03-26 | 2007-08-15 | 株式会社クボタ | Industrial dehumidifying dryer |
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| JP2007083122A (en) * | 2005-09-20 | 2007-04-05 | Central Res Inst Of Electric Power Ind | Method for dehydrating water-containing material using liquefied substance |
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2009
- 2009-06-04 WO PCT/JP2009/060239 patent/WO2009148113A1/en active Application Filing
- 2009-06-04 CN CN200980121190XA patent/CN102046540B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1658937A (en) * | 2002-06-03 | 2005-08-24 | 财团法人电力中央研究所 | Method for removing water contained in solid using liquid material |
| JP2006198575A (en) * | 2005-01-24 | 2006-08-03 | Central Res Inst Of Electric Power Ind | Method for removing water of water-containing solid and its system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009148113A1 (en) | 2009-12-10 |
| JP5731733B2 (en) | 2015-06-10 |
| CN102046540A (en) | 2011-05-04 |
| JP2009291697A (en) | 2009-12-17 |
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