CN101168467A - Sludge replacing and dewatering method and device - Google Patents
Sludge replacing and dewatering method and device Download PDFInfo
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- CN101168467A CN101168467A CNA2007100612313A CN200710061231A CN101168467A CN 101168467 A CN101168467 A CN 101168467A CN A2007100612313 A CNA2007100612313 A CN A2007100612313A CN 200710061231 A CN200710061231 A CN 200710061231A CN 101168467 A CN101168467 A CN 101168467A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention relates to a sludge exchange dewater method and a relative device, wherein the method comprises that the sewage sludge dewatered mechanically is replaced with a solvent immiscible liquid with water, to be mixed at 20-60DEG C, filtered and displaced at vacuum, while the volume ration between sewage sludge and solvent is 1:1-7. The inventive device comprises a sewage inlet, a temperature adjuster, and a mixer which are arranged on a sludge displacement tank, wherein the tank is connected with a filter liquor tank at back, the filter liquor tank is arranged with a vacuum plant and a deposited sludge outlet, a connecting pipeline connects the filter liquor tank and a solvent stratified tank, the sludge displacement tank and the solvent stratified tank are connected via a displacement solvent circulating pump, and the solvent stratified tank is arranged with a waste water outlet under. The inventive solvent removal and sludge drying methods can automatically reclaim and fully circulate displacement solvent to avoid solvent waste and eliminate other solvent reclamation techniques with high energy consumption and complex process, and reduce the energy consumption of heat drying of sludge.
Description
Technical field
The present invention relates to a kind of method for sludge treatment that reduces traditional sludge heated drying energy consumption, belong to the sludge replacing dehydration method and the device of the sludge treatment technology of sludge treatment and solid waste process field.
Background technology
Along with The development in society and economy and quickening of urbanization process, town sewage and amount of sludge thereof increase fast.China cities and towns are produced wet mud statistics per year up to 1,200 ten thousand tons, and actual wet sludge yield is higher than this numerical value possibly far away, and its annual growth rate reaches 10-15%.Because the sludge treatment cost accounts for about 50% of sewage work's processing cost, cost is very high, so the many sewage works of China often only handle sewage and avoided sludge treatment.The sludge treatment of China is often by carrying out landfill or stacking after the simple and mechanical dehydration at present.Owing to contain a large amount of poisonous, objectionable impurities in the Sewage Plant biological sludge, cause the serious environmental pollution problem easily.Therefore, the mud of how that output is huge, complicated component is through the science treatment and disposal, makes it reach the purpose of stabilization, minimizing, innoxious, resource utilization, becomes the common problem of paying close attention to of environmental area.
Sewage plant sludge is a kind of uneven, complicated dispersed system, and water ratio is up to more than 99%, and volume and quantity are huge, and is easily smelly, therefore, must in time handle, and the decrement of dewatering is beneficial to subsequent processes and disposal.In addition, contain a large amount of organic compositions in the mud, containing a large amount of resources.Mud by concentrate, its water ratio is generally 75%～87% behind the mechanical dehydration.Water ratio in the mud is still higher at this moment, can not reach the sludge stabilization processing requirements, minimizing is also insufficient, stabilization is not more known where to begin, no matter still (as the combustion gas of pyrolysis system, oil, semicoke solid etc. or directly burning) all reaches the high requirement of resource technology to moisture percentage in sewage sludge far away as Energy resources as bio-feritlizer, therefore, further dehydration of mud.The normal method that adopts of sludge dewatering this moment is the heated drying technology.In the whole process of sewage sludge dehydration, the energy consumption of heated drying accounts for total more than 90% of dehydration energy consumption, heated drying is that energy consumption consumes maximum link in the deeply dehydrating sludge process, the application of restriction heated drying technology in sludge treatment also is the energy-conservation key point of sludge dehydrating and drying.
At present, the work that people are done in reduction heated drying energy consumption can be divided into three approach substantially: 1, by utilizing waste heat (as fume afterheat, exhaust steam, spent hot water etc.) and nature energy (as sun power, underground heat etc.) in the commercial run to carry out the mummification of mud, to reduce the consumption of electric energy, coal, fuel oil, combustion gas or other valuable energy, reach the purpose of save energy; 2, the novel mummification equipment of development and Design improves the speed of sludge drying or improves its heat utilization efficiency, as equipment such as spraying drying, thin layer drying, fluidised bed dryings; 3, explore new dry technology, improve efficiency of energy utilization, reach the purpose that reduces energy consumption for drying, as microwave drying technology, infrared heating technique, freeze drying technology, electric field dehydration technique, electromagnetism heat drying technology etc.From traditional drying theory, obviously, the external factor and the effect of material particles character factor in drying process of dry materials often paid attention in above drying study work, and considers few to the characteristic of material to be evaporated in the mud (sewage sludge middle finger moisture).In fact, why energy consumption is more greatly because the specific physical chemical property of the moisture in the mud determines in the sewage sludge mummification, as has the specific heat height, and latent heat is big, and surface tension is big, and viscosity is big etc.So how changing or reduce these character of moisture in the mud is exactly the key that reduces the sludge drying energy consumption.
For this reason, the present invention has proposed the technological method and the device of sewage sludge moisture replacement dewatering reduction heated drying energy consumption from brand-new angle.The invention of this novel mud heated drying can energy efficient reach more than the 60-90%, and can dispose for the minimizing of sewage sludge, stabilization, innoxious and recycling treatment provides good technical to support, and this invention has broad application prospects.
Summary of the invention
The purpose of this invention is to provide a kind of technological method and device that reduces the drying sludge energy consumption, be sludge treatment and recycling reduction Financial cost.
Method of the present invention is as follows:
Sludge replacing dehydration method of the present invention is that the sewage sludge through mechanical dehydration is used and the immiscible solvent exchange of water, stirs under 20-60 ℃ temperature, and carries out the displacement of vacuum drop liquid, and the volume ratio of sewage sludge and solvent is 1: 1～7.
The displacement mud of getting rid of can be filtered in belt press filtration filtration unit, make the mud water capacity reduce to 75-82%, filtration mud is sent to drying plant and carries out drying.
To filter mud and send into the heated drying system and carry out heated drying, drying means adopts the dry or direct warm air drying of indirect type, and obtained dewatered sludge to 180 minutes 20 minutes time of drying, as follow-up recycling raw material.
The present invention is through the leachate in the replacement process, phlegma is collected in the airtight demixing of solvents pond in filtrate and the heated drying through filtering again, and make the solution layering go out replacement solvent layer and water layer, so that the recycle of replacement solvent, residue waste water is sent into Sewage treatment systems by wastewater outlet and is handled.
Described and the immiscible solvent of water is: pentane, hexane, 2-methylpentane, 2,2-dimethylbutane, 2, the mixture of one or more of 3-dimethylbutane, heptane, heptane isomers, octane and octane isomer, sherwood oil, gasoline, kerosene or ether.
The device of sludge replacing dewatering of the present invention comprises sludge replacing pond 6, reservoir 12, demixing of solvents pond 16, and wherein the sludge replacing pond is provided with mud import 5, temperature control equipment 7 and whipping appts 8; Back, sludge replacing pond connects reservoir 12, and reservoir is provided with 9 vacuum units and settled sludge outlet 13; Connecting tube 15 is connected reservoir 12 with demixing of solvents pond 16, will connect sludge replacing pond and demixing of solvents pond through replacement solvent recycle pump 17, is provided with wastewater outlet 21 below the demixing of solvents pond.
Be provided with filter cloth 10 and orifice plate 11 between described sludge replacing pond and the reservoir.
Be provided with baffle plate 19 before described pipe connecting 15 two-port.
Described reservoir top is bottleneck structure 20.
Described reservoir bottom is provided with sludge outlet 14.
Described sludge outlet 14 and replacement solvent recycle pump 7 places are provided with flow control valve 18.
Described temperature control equipment 7 is distributed in around the displacement pool wall, realizes temperature regulation for the electrically heated attemperation or by the chuck heat exchange.
Described whipping appts 8 is that mechanical stirring or probe type ultrasonic stir.
The purpose in the sludge replacing pond in the displacement apparatus of the present invention is to provide the place for water-containing sludge and solvent are fully replaced.
The purpose of the whipping appts in the displacement apparatus of the present invention not only makes mud and solvent replace, and also prevents and treats in addition or alleviates mud and stop up the filter cloth duct when drop liquid, to help quick drop liquid, realizes solvent exchange.
Thermostatic purpose in the displacement apparatus of the present invention is the density by viscosity, surface tension and the solvent that changes solution, improves displacement efficiency and speed.
The purpose of the vacuum unit in the displacement apparatus of the present invention is to regulate the vacuum tightness in the filtrate collection pond, thereby regulates the filtering rate of the substitutional solution in the displacement pool.
The feature in the filtrate collection pond in the displacement apparatus of the present invention is that the design of camber line bottleneck structure is adopted on its top, its objective is and reduce top liquor capacity and liquid level area, filtrate is sunk with bigger speed, a spot of mud is deposited, and can reduce the store content of replacement solvent on collecting tank top, solution is walked around baffle plate and is entered the demixing of solvents pond by the connecting tube with certain angle of inclination (0-10 °) from the top of collecting tank.
The effect in the demixing of solvents pond in the displacement apparatus of the present invention is that the realization replacement solvent is separated with the good layering of moisture, the effect of baffle plate wherein is that the solution that comes from the filtrate collection pond is flowed downward under the effect of baffle plate, the abundant layering of the replacement solvent that moisture that the immiscible density of easier like this realization is bigger and density are little, so that replacement solvent is recycled, and realize discharge of wastewater.
Each unit operation of the present invention such as sludge replacing, sludge filtration, drying sludge can periodical operation, but also operate continuously, can the operate continuously of part unit, the periodical operation of part unit has handiness.
Replacement solvent of the present invention stablize for preferred and water are immiscible and environmental sound or endanger less, vaporator rate is fast, latent heat is little, abundant recovered solvent, as hexane, heptane, heptane isomers, sherwood oil.
One of gordian technique of the present invention is to have adopted solvent exchange thought to reduce the physico-chemical parameter characteristic that moisture specific heat is big in the primary sludge, latent heat is high, surface tension is big, viscosity is big, reduces the difficulty and the energy consumption of mud heated drying from thermodynamic principles.
Gordian technique of the present invention two for fear of replacement solvent the reclaims bigger heating evaporation process of time power consumption, reduce replacement solvent recovery difficult and energy consumption and proposed several preferred and water immiscible stablize and environmental sound or endanger less, vaporator rate is fast, latent heat is little, the replacement solvent that can fully reclaim, as hexane, heptane, heptane isomers, sherwood oil.
Three of gordian technique of the present invention is to have designed mud solvent exchange dehydration new device, guarantees quick, the abundant replacement dewatering of mud, and the solvent good circulation is utilized, the purpose of waste water safety dumping.
The invention provides a kind of new sewage sludge replacement dewatering method, and carry out the method for the solvent removal and the drying sludge of mud, can reach by this technology that replacement solvent reclaims automatically, fully recycle, not only avoid the waste of solvent, also avoid the solvent recuperation technology of other high energy consumption process complexity, reached the purpose of the heated drying energy consumption that has reduced mud simultaneously.
The sludge handling process that sewage sludge replacement dewatering provided by the present invention reduces the heated drying energy consumption comprises the displacement of mud solvent wash, filtration, drying, solvent recovery automatically, solvent cycle, discharge of wastewater.
Description of drawings
Fig. 1: sludge replacing dehydration fever drying process synoptic diagram;
Fig. 2: sludge replacing apparatus structure and schematic flow sheet;
Among the figure: sludge replacing device 1; Sludge filtration device 2; Sludge drying mechanism 3; Condensing works 4; Mud import 5; Sludge replacing pond 6; Temperature control equipment 7; Whipping appts 8; Vacuum unit 9; Filter cloth 10; Orifice plate 11; Reservoir 12; Settled sludge outlet 13; Sludge outlet 14; Connecting tube 15; Demixing of solvents pond 16; Replacement solvent recycle pump 17; Flow control valve; 18 baffle plates 19; Camber line bottleneck structure 20; Wastewater outlet 21.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
With being sent in the container that band mixes of certain volume through the mud of mechanical dehydration, and press 1～7 times of sludge volume (or weight 1～5 times) and in this container, add and the immiscible replacement solvent of water, under the 20-60 ℃ of temperature through after certain hour fully mixes, the mud solvent mixture enters filter plant from the sludge replacing container carries out solvent drop liquid and removes processing.If moisture content does not reach and specifies when requiring in the mud after the above-mentioned processing of process, this mud can repeat said process, till moisture content meets the requirements in displacement mud.
To be sent to band continuously by the certain volume flow through mechanical dehydration mud mixes and has in the container of outlet of adjustable throttle amount, and press 1～7 times of sludge volume (or weight 1～5 times) and in this container, add and the immiscible replacement solvent of water continuously, under 20-60 ℃ of temperature, mix, regulate the residence time of mud in the displacement container by regulating displacement container sludge outlet flow, reach the purpose of improving the sludge replacing effect, go out to replace mud behind the container and enter into filter plant and carry out drop liquid solvent removal and handle, realize mud solvent exchange purpose.
With the 5kg water ratio is that 75% dewatered sludge is sent in the sludge replacing device 1, mud import 5 by the sludge replacing device joins in the sludge replacing pond 6 that volume is 50L, solvent cycle pump 17 adds replacement solvent hexane 5kg in the sludge replacing pond, the mud temperature is set at 20 ℃ with temperature control equipment 7 in the displacement pool, the stir speed (S.S.) of mechanical stirring device 8 is 100 rev/mins, stir after 5 minutes, open vacuum unit 9, regulating reservoir vacuum tightness is 0.04MPa, behind the suction filtration 5 minutes, stop vacuum filtration, in displacement pool, add 10kg replacement solvent hexane with the solvent cycle pump again, after stirring 5 minutes under 200 rev/mins the rotating speed, vacuum (vacuum tightness 0.05MPa) suction filtration is after 10 minutes, mud is discharged to enter the mud belt press filtration filter plant 2 from displacement pool sludge outlet 14 and is filtered, make the content liquid of mud reduce to 78%, mud then enters and carries out the indirect heating drying in the drying installation 3, drying temperature is 70 ℃, after dry 180 minutes, it is about 1% that the moisture content of mud is reduced to, and stops drying.Vacuum filtrate in the replacement process enters reservoir 12 after by filter cloth 10 and orifice plate 11, and under the effect of baffle plate 19 and camber line bottleneck structure 20, make a small amount of sludgd deposition in the bottom, settled sludge is got rid of by settled sludge outlet 13, and liquid is walked around baffle plate 19 and is entered in the demixing of solvents pond 16 by connecting tube 20, under the effect of baffle plate 19, make the better layering of mixing solutions, the replacement solvent hexane is owing to density (about 0.66g/ml) rests on top much smaller than the density (about 0.99g/ml) of water, and moisture rests on lower floor, replacement solvent is used for the sludge replacing dehydration by solvent cycle pump 17, and moisture enters Sewage treatment systems by wastewater outlet 21.The phlegma of steam in condensing works 4 that filtrate that filtration unit 2 produces and drying installation 3 are produced all is collected in the demixing of solvents pond 16, realizes the abundant layering of replacement solvent and moisture, to help the safety dumping with waste water of recycling of solvent.
Embodiment 4
With embodiment 3.Difference is 80% at the moisture percentage in sewage sludge that adds in the displacement pool 6 of displacement apparatus 1, replacement solvent heptane weight is 20kg, by solvent cycle pump 17 disposable joining in the displacement pool 6, the employing frequency is 20kHz, power density is that 0.03W/ml probe type ultrasonic whipping appts 8 stirs, temperature regulation is 40 ℃ in the displacement pool 12, after the ultrasonic stirring 15 minutes, suction filtration is 20 minutes under 0.08MPa vacuum tightness, mud enters filtering equipment 2 filtrations makes the sludge liquid body burden reduce to 82%, the temperature of drying plant 3 is set at 150 ℃, 20 minutes time of drying, moisture content is 2.8% in the mud of dry back.
Embodiment 5
Be that 85% mud is sent in the displacement pool 6 continuously by the mud inlet 5 of displacement apparatus 1 with the water ratio of 30kg per hour, the original volume of the replacement solvent 2-methyl hexane in the displacement pool 6 is 5L, the stir speed (S.S.) of whipping appts 8 is 150 rev/mins, simultaneously in displacement pool 6, adding replacement solvent 2-methyl hexane by the flow of 100kg per hour under the adjusting of flow control valve 18 by solvent cycle pump 17, the flow of sludge outlet 14 place's mud is regulated by variable valve 18, make the residence time of mud in displacement pool be about 10 minutes, the vacuum tightness of the reservoir 12 of displacement apparatus is adjusted to 0.09MPa by vacuum unit 9, reduce to 82% through the metathetical mud content liquid after by filter-pressing device 2, mud is admitted to and carries out warm air drying in the drying plant, hot blast temperature is 90 ℃, wind speed is 1.5m/s, the relative humidity of air is 40%, 30 minutes residence time in drying plant of mud, dry back sludge water content content is 5%.The processing mode of the solution that produces in displacement apparatus, filter-pressing device and the condensing works is with embodiment 3.
With embodiment 3.Difference mud is 20 minutes in the residence time of displacement pool 6, replacement solvent is a sherwood oil, whipping appts 8 is the ultrasonic stirring of frequency 20kHz, power density 0.02W/ml, temperature regulation is 60 ℃ in the displacement pool 12, the vacuum tightness of reservoir 12 is 0.06MPa, mud filters the back content liquid by filtering equipment 2 and reduces to 78%, the temperature of warm air drying equipment 3 is set at 120 ℃, wind speed is 1m/s, 40 minutes residence time in drying plant of mud, moisture content is 3% in the mud of dry back.The processing mode of the solution that produces in displacement apparatus, filter-pressing device and the condensing works is with embodiment 3.
The present invention open and the sludge replacing dehydration method and the device that propose, those skilled in the art can be by using for reference this paper content, and links such as appropriate change solvent, processing parameter realize.Method and apparatus of the present invention is described by preferred embodiment, person skilled obviously can be changed or suitably change and combination method and apparatus as herein described in not breaking away from content of the present invention, spirit and scope, realizes the technology of the present invention.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as being included in spirit of the present invention, scope and the content
Claims (10)
1. a sludge replacing dehydration method is characterized in that the sewage sludge through mechanical dehydration is used and the immiscible solvent exchange of water, stirs under 20-60 ℃ temperature, and filters the displacement of drop liquid, and the volume ratio of sewage sludge and solvent is 1: 1～7.
2. sludge replacing dehydration method as claimed in claim 1 is characterized in that described ten thousand methods are that the mud that vacuum drop liquid displaces is carried out following steps
(1) solvent exchange mud is entered in the belt press filtration sludge filtration equipment and carry out liquid removal in the mud, make its content liquid reduce to 75-82%;
(2) liquid sludge of taking off of step (1) enters the heated drying system, descends dry 20-180 minute at 70-150 ℃, obtains dewatered sludge.
3. sludge replacing dehydration method as claimed in claim 1, it is characterized in that described and the immiscible solvent of water are: pentane, hexane, 2-methylpentane, 2,2-dimethylbutane, 2, the mixture of one or more of 3-dimethylbutane, heptane, heptane isomers, octane and octane isomer, sherwood oil, gasoline, kerosene or ether.
4. the device of a kind of sludge replacing dewatering as claimed in claim 1, comprise sludge replacing pond (6), reservoir (12), demixing of solvents pond (16), it is characterized in that the sludge replacing pond is provided with mud import (5), temperature control equipment (7) and whipping appts (8); Back, sludge replacing pond connects reservoir (12), and reservoir is provided with (9) vacuum unit and settled sludge outlet (13); Connecting tube (15) is connected reservoir (12) with demixing of solvents pond (16), will connect sludge replacing pond and demixing of solvents pond through replacement solvent recycle pump (17), is provided with wastewater outlet (21) below the demixing of solvents pond.
5. the device of sludge replacing dehydration as claimed in claim 4 is characterized in that being provided with between described sludge replacing pond and the reservoir filter cloth (10) and orifice plate (11).
6. the device of sludge replacing dehydration as claimed in claim 4 is characterized in that being provided with baffle plate (19) before described pipe connecting (15) two-port.
7. the device of sludge replacing dehydration as claimed in claim 4 is characterized in that described reservoir top is bottleneck structure (20).
8. the device of sludge replacing dehydration as claimed in claim 4 is characterized in that bottom, described sludge replacing pond is provided with sludge outlet (14).
9. as the device of claim 4 or the dehydration of 8 described sludge replacings, it is characterized in that described sludge outlet (14) and replacement solvent recycle pump (17) locate to be provided with flow control valve (18).
10. the device of sludge replacing dehydration as claimed in claim 4 is characterized in that described temperature control equipment (7) is distributed in around the displacement pool wall, realizes temperature regulation for the electrically heated attemperation or by the chuck heat exchange; Described whipping appts (8) is that mechanical stirring or probe type ultrasonic stir.
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| CNA2007100612313A CN101168467A (en) | 2007-09-28 | 2007-09-28 | Sludge replacing and dewatering method and device |
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| CNA2007100612313A CN101168467A (en) | 2007-09-28 | 2007-09-28 | Sludge replacing and dewatering method and device |
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Cited By (16)
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| CN101514074B (en) * | 2009-04-03 | 2010-12-08 | 天津大学 | Processing method of sludge dewatering |
| CN102021061A (en) * | 2010-12-13 | 2011-04-20 | 北京昊业怡生科技有限公司 | Method for preparing fuel from organic sludge |
| CN101671104B (en) * | 2008-09-12 | 2011-08-17 | 王文准 | Vacuum boiling sludge dewatering and drying method and system |
| CN102741174A (en) * | 2010-03-26 | 2012-10-17 | 美得华水务株式会社 | Solid-liquid separation method |
| CN103693835A (en) * | 2012-09-28 | 2014-04-02 | 北京中自控环保科技有限公司 | Residual sludge ultrasonic-dehydration apparatus |
| CN105084699A (en) * | 2014-05-05 | 2015-11-25 | 青岛大学 | In-depth dehydration treatment method for sludge in explosive production waste water |
| CN105330125A (en) * | 2015-11-27 | 2016-02-17 | 东南大学 | Ultrasonic radiation solvent extraction combination deep dehydration method and device applied to biological solid matter |
| CN105330124A (en) * | 2015-11-25 | 2016-02-17 | 东南大学 | Microwave radiation solvent extraction combination deep dehydration method and device applied to biological solid matter |
| CN105668958A (en) * | 2016-02-29 | 2016-06-15 | 西安集良石油技术开发有限公司 | Device and method for treating oilfield abandoned oil mud |
| CN105709471A (en) * | 2016-04-12 | 2016-06-29 | 成都蒲江珂贤科技有限公司 | Movable sludge treatment filter press |
| CN106512507A (en) * | 2016-12-06 | 2017-03-22 | 中设设计集团股份有限公司 | Efficient slurry dewatering device and method based on ultrasonication |
| 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 |
| CN108689578A (en) * | 2018-06-22 | 2018-10-23 | 张传赛 | A kind of sludge rapid draing processing unit |
| WO2019201313A1 (en) * | 2018-04-19 | 2019-10-24 | 北京中科国通环保工程技术股份有限公司 | Method and device for treating aqueous substance |
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| CN101671104B (en) * | 2008-09-12 | 2011-08-17 | 王文准 | Vacuum boiling sludge dewatering and drying method and system |
| CN101514074B (en) * | 2009-04-03 | 2010-12-08 | 天津大学 | Processing method of sludge dewatering |
| CN102741174B (en) * | 2010-03-26 | 2014-06-25 | 美得华水务株式会社 | Solid-liquid separation method |
| CN102741174A (en) * | 2010-03-26 | 2012-10-17 | 美得华水务株式会社 | Solid-liquid separation method |
| CN102021061B (en) * | 2010-12-13 | 2013-06-19 | 北京昊业怡生科技有限公司 | Method for preparing fuel from organic sludge |
| CN102021061A (en) * | 2010-12-13 | 2011-04-20 | 北京昊业怡生科技有限公司 | Method for preparing fuel from organic sludge |
| CN103693835A (en) * | 2012-09-28 | 2014-04-02 | 北京中自控环保科技有限公司 | Residual sludge ultrasonic-dehydration apparatus |
| CN105084699A (en) * | 2014-05-05 | 2015-11-25 | 青岛大学 | In-depth dehydration treatment method for sludge in explosive production waste water |
| 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 |
| CN106546067B (en) * | 2015-09-18 | 2022-08-19 | 海南椰国食品有限公司 | Low-temperature integrated drying method for replacing bacterial cellulose gel film |
| CN105330124A (en) * | 2015-11-25 | 2016-02-17 | 东南大学 | Microwave radiation solvent extraction combination deep dehydration method and device applied to biological solid matter |
| US10661320B2 (en) | 2015-11-25 | 2020-05-26 | Southeast University | Method and apparatus for dewatering biological solid material employing both microwave irradiation and solvent extraction |
| 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 |
| CN105330125A (en) * | 2015-11-27 | 2016-02-17 | 东南大学 | Ultrasonic radiation solvent extraction combination deep dehydration method and device applied to biological solid matter |
| CN105668958B (en) * | 2016-02-29 | 2018-08-21 | 西安集良石油技术开发有限公司 | A kind of oilfield waste greasy filth slurry processing unit and method |
| CN105668958A (en) * | 2016-02-29 | 2016-06-15 | 西安集良石油技术开发有限公司 | Device and method for treating oilfield abandoned oil mud |
| CN105709471A (en) * | 2016-04-12 | 2016-06-29 | 成都蒲江珂贤科技有限公司 | Movable sludge treatment filter press |
| CN106512507A (en) * | 2016-12-06 | 2017-03-22 | 中设设计集团股份有限公司 | Efficient slurry dewatering device and method based on ultrasonication |
| WO2019201313A1 (en) * | 2018-04-19 | 2019-10-24 | 北京中科国通环保工程技术股份有限公司 | Method and device for treating aqueous substance |
| CN108689578A (en) * | 2018-06-22 | 2018-10-23 | 张传赛 | A kind of sludge rapid draing processing unit |
| CN113784929A (en) * | 2018-12-24 | 2021-12-10 | 株式会社五六 | Multistage separation reaction tank and sewage sludge treatment method using alkane series solvent |
| CN112777906A (en) * | 2020-12-22 | 2021-05-11 | 江山市虎鼎环保科技有限公司 | Efficient filter pressing process for household garbage incineration fly ash washing slurry |
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