CN102295399B - Biological and physical combined sludge drying device - Google Patents
Biological and physical combined sludge drying device Download PDFInfo
- Publication number
- CN102295399B CN102295399B CN 201110158273 CN201110158273A CN102295399B CN 102295399 B CN102295399 B CN 102295399B CN 201110158273 CN201110158273 CN 201110158273 CN 201110158273 A CN201110158273 A CN 201110158273A CN 102295399 B CN102295399 B CN 102295399B
- Authority
- CN
- China
- Prior art keywords
- air
- gas distribution
- gas
- sludge
- distribution pipe
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a biological and physical combined sludge drying device. The device comprises a feed system, a drum drying reactor body, a gas supply system, a gas distribution pipe and a temperature and humidity online detection feedback system. In the device, while sludge is fed, the sludge entering a drum is directly preheated to over 50 DEG C by utilizing residual heat of a sewage plant; and the interlayer between an inner drum and an outer drum is separated into a gas distribution chamber to remove dead angles of gas distribution. The thermal insulation performance is reinforced by the inner drum and outer drum dual-layer design, moisture in the air is quickly eliminated outside the reactor by virtue of alternating bottom gas supply and top gas extraction, moisture in the air is prevented from condensing back to a matrix; and the aims of reducing sludge drying energy consumption, shortening drying retention time and reinforcing moisture removing effect can be realized by the drum dynamic rotation design and by constantly shoveling and mixing a material with a built-in shoveling plate, detecting temperature and humidity on line and feeding back air ventilating conditions, so that the technical problems of environmental pollution, low thermal efficiency, high energy consumption, sludge agglomeration and wall sticking of pure physical thermal drying can be solved. Therefore, the biological and physical combined sludge drying device has wide application prospect.
Description
Technical field
The present invention relates to a kind of device that utilizes the self-produced heated drying dewatered sludge of biomass energy, be specifically related to the biophysics drying installation of urban wastewater treatment firm dewatered sludge, belong to that solid waste process to be disposed and the recycling field.
Background technology
Along with the sharply increase of sewage load, sludge yield increases sharply.The mud stickiness is large, and moisture is difficult to remove, and water ratio is still up to 85% after gravity concentration, mechanical dehydration, and its processing disposal costs accounts for whole Sewage Plant working cost and increases year by year, and the difficult point that has become environmental area is disposed in the processing of mud.
Mud organic substance content is higher, have higher economic worth, but water ratio is higher, has limited its subsequent disposal and has disposed and recycling." the household refuse landfill sites pollutent control criterion " that came into effect in 2008 require domestic sewage factory mud after treatment water ratio can enter refuse landfill less than 60% and dispose and need to carry out pre-treatment, the suitable water ratio of sludge composting is 50%～60%, when the suitable water ratio of sludge incineration is 50% left and right, therefore the mud after mechanical dehydration is difficult to directly carry out sanitary landfill, compost, burning, need to carry out drying to it, its water ratio is reduced to below 50%, is conducive to subsequent disposal and disposes and recycling.
Sludge drying mainly adopts the mode of physical thermal drying at present, need consumption of fossil fuels, dry for direct heat, the mummification residence time is long, energy consumption is large and thermo-efficiency is not high, produces simultaneously a large amount of tail gas, cause burden to subsequent disposal, various moisture and mud granule bonding force difference are larger in addition, and its drying property is different from crystal, cause the partition heated drying, mud easily lumps, sticking wall, causes heat transfer efficiency sharply to descend.
Chinese patent literature discloses [a kind of continuous flow sludge biophysical drying device and method, publication number: CN101913744A], this technology refluxes after air setting is removed moisture, realize the continuous operation of sludge organism-physical dryness by the dynamic rotary of reactor, strengthened the stability of dehumidification system operation, and realized to a certain extent energy-saving and cost-reducing.This technology is carried out preheating to whole drying drum, directly will be sent in biology-combined sludge drying device through pretreated mud, and microorganism is warmed up to more than 50 ℃ from heat production needs 1～2d, has extended the residence time.Realize even gas distribution in the mode of holing on the cloth gas tank, owing to having spacing between the cloth gas tank, and air can't pass height lower than the mud of cloth gas tank, therefore easily has the gas distribution dead angle, causes part mud to be in anaerobic state.When the research discovery bio-reactor operation of supporting with the scientific and technological great special project of improvement (2008ZX07313-002) is controlled in country's water pollution, its inner air humidity is greater than 95%, if it is limited to adopt the condensation method of this technology to remove the effect of moisture in damp atmosphere, easily cause the humidity of return air higher, in air flow process, the ability that the air that humidity is higher holds moisture a little less than, and easily meet coldly, water of condensation returns in matrix, has reduced drying effect.
Summary of the invention
The object of the present invention is to provide remove moisture in mud and device, overcoming existing sludge hot dry technology needs consumption of fossil fuels, mud easily lumps, sticking wall, heat transfer efficiency is low, energy consumption is high shortcoming.
the present invention mixes mud by a certain percentage with amendment, to improve the porosity of mud, regulate its initial aqueous rate to 70% left and right, to passing into air through in modified sludge substrate, and utilize more than high temperature heat pump reclaims the rapid preheating of the used heat mud to 50 ℃ of Sewage Plant, excite fast microorganism active, further shorten the residence time of mud in sludge organism-physical dryness reactor, the heat that this process produces can be with moisture by migration of liquid to gas phase, malleation air feed by reactor and negative pressure ventilation mode are rapidly with moisture removal, avoid airborne condensate moisture to return matrix, realize the efficient removal of moisture.
Technical scheme of the present invention is as follows:
a kind of sludge biological-physical combined drying device, this device comprises feed system, the roller drying reactor body, airing system, gas distribution pipe and humiture on-line monitoring feedback system, it is characterized in that: described airing system comprises air feed pump, the air supply header flow director, main air-supply duct and multichannel gas manifold, main air-supply duct closely is connected by the discharge end swivel joint with the multichannel gas manifold, each gas distribution pipe connects with corresponding gas manifold by pipeline, being evenly distributed with diameter on gas distribution pipe is 3～5mm aperture, air-supply duct angular displacement sensor and a plurality of air-supply duct flow director are housed on the gas manifold of every road, described device also comprises air-bleed system, described air-bleed system comprises off-gas pump, the house steward's flow director of bleeding, main extraction pipe and multichannel suction branch, main extraction pipe closely is connected by the feed end swivel joint with the multichannel suction branch, each gas distribution pipe connects with corresponding suction branch by pipeline, and extraction pipe angular displacement sensor and a plurality of extraction pipe flow director are housed on the suction branch of every road, described roller drying reactor body comprises inner core, urceolus, thermal insulation layer and drive unit, and inner core is provided with flight, and evenly has aperture on inner tube wall, described gas distribution pipe is arranged between inside and outside cylinder, and arranges vertically many groups, is separated by dividing plate between every group, every group of gas distribution pipe is a plurality of along the distribution of barrel even circumferential, separates with dividing plate between each gas distribution pipe, forms independently cloth air chamber, described feed system comprises material preheating-charging all-in-one, high temperature heat pump, the first temp probe and the 2nd PLC controller, described material preheating-charging all-in-one adopts the hollow screw paddle structure, and high temperature heat pump forms sealing by pipeline and hollow screw oar and is connected, described the first temp probe is arranged on the material outlet place of preheating-charging all-in-one, and described the 2nd PLC controller is connected with high temperature heat pump with the first temp probe by signal wire, described humiture on-line monitoring feedback system comprises for the second temp probe of substrate temperature in monitoring roller drying reactor, for humidity sensor and a PLC controller of monitoring main extraction pipe gas humidity, the PLC controller is connected by control circuit and air feed pump, air supply header flow director bleed house steward's flow director, air-supply duct angular displacement sensor, extraction pipe angular displacement sensor, the second temp probe, humidity sensor and is connected with off-gas pump.
In described device: the angle of roller drying reactor body axis and horizontal plane is 0.5 °～1 °, urceolus diameter: length=1: 10～1: 15.
In described device: weld 3～6 flights on inner core, on inner tube wall, hole diameter is 3～5mm, and the spacing between inner core and urceolus is 10～20cm.
Beneficial effect: compared with the prior art the present invention has following distinguishing feature:
1. reclaim used heat preheating mud in sewage with energy-efficient high temperature heat pump as auxiliary thermal source, sewage sludge feed and preheating are carried out simultaneously, directly mud is preheating to 50～60 ℃, be conducive to excite rapidly microorganism active, effectively the minimizing residence time, have the environmental economy comprehensive benefit.
2. add dividing plate between inner core and urceolus, and the mode of gas distribution is carried out in boring on inner core, compare with the mode that adopts cloth gas tank gas distribution independent of each other, removed the gas distribution dead angle.
3. inner core and and the urceolus double layer design, strengthened the cylindrical shell heat-insulating property, need not the whole drying drum of preheating, be conducive to improve the mud temperature when reducing energy consumption, strengthen the moisture removal effect.
4. lay by replacing the ventilation system of bleeding at gas distribution-top, bottom, heat and mass transfer enhancement, reflux after solving air setting, air hold the moisture ability a little less than, the problem of sludge substrate is returned in the easy condensation of moisture, realizes the efficient removal of sludge water content, based on humiture on-line monitoring feedback control ventilation condition, realize the accurate feedback regulation control of controlling automatically of drying process, greatly saved human cost and running cost.
Description of drawings
Fig. 1 is sludge organism-combined sludge drying device provided by the invention (sectional view).
Fig. 2 is the A-A section of Fig. 1.
Fig. 3 is the B-B section of Fig. 1.
Fig. 4 is the C-C section of Fig. 1.
In figure: the 1-end socket; The 2-urceolus; The 3-inner core; The 4-thermal insulation layer; The 5-gas distribution pipe; The 6-suction branch; The 7-gas manifold; 8A-extraction pipe angular displacement sensor; 8B-air-supply duct angular displacement sensor; 9A-extraction pipe flow director; 9B-air-supply duct flow director; The 10-air feed pump; 11-air supply header flow director; The 12-off-gas pump; The 13-house steward's flow director of bleeding; 14-the one PLC controller; The 15-humidity sensor; 16-the second temp probe; The 17-high temperature heat pump; 18-the first temp probe; 19-the 2nd PLC controller; 20-material preheating-charging all-in-one; The 21-support roller; The 22-adjustable frequency motor; The 23-transmitting gear; 24-master's air-supply duct; 25-master's extraction pipe; The 26-flight; 27-hollow screw oar; 28-feed end swivel joint; 29-discharge end swivel joint.
Embodiment
Below in conjunction with drawings and Examples, structure of the present invention, principle of work and working process are further described.
Fig. 1 is sludge organism-combined sludge drying device provided by the invention (sectional view).this device comprises: feed system, the roller drying reactor body, airing system, gas distribution pipe and humiture on-line monitoring feedback system, it is characterized in that: described airing system comprises air feed pump 10, air supply header flow director 11, main air-supply duct 24 and multichannel gas manifold 7, air supply header flow director 11 is controlled the total flux that passes into the reactor air, main air-supply duct 24 closely is connected by discharge end swivel joint 29 with multichannel gas manifold 7, each gas distribution pipe 5 connects with corresponding gas manifold 7 by pipeline, being evenly distributed with diameter on gas distribution pipe 5 is 3～5mm aperture, air-supply duct angular displacement sensor 8B and a plurality of air-supply duct flow director 9B are housed on every road gas manifold 7, and air-supply duct flow director 9B controls the flow that passes into gas distribution pipe 5, described device also comprises air-bleed system, described air-bleed system comprises off-gas pump 12, the house steward's flow director 13 of bleeding, main extraction pipe 25 and multichannel suction branch 6, the house steward's flow director 13 of bleeding is controlled the air total flux of extracting out from reactor, main extraction pipe 25 closely is connected by feed end swivel joint 28 with multichannel suction branch 6, and each gas distribution pipe 5 connects with corresponding suction branch 6 by pipeline, extraction pipe angular displacement sensor 8A and a plurality of extraction pipe flow director 9A are housed on every road suction branch 6, and extraction pipe flow director 9A controls the air flow quantity that gas distribution pipe is extracted out, described roller drying reactor body comprises inner core 3, urceolus 2, thermal insulation layer 4 and drive unit, inner core is provided with flight, and evenly have aperture on inner tube wall, the material of inner core 3 and urceolus 2 is cast iron or stainless steel, thermal insulation layer 4 can be selected the lagging materials such as rock wool or urethane, thickness 5～10cm, described gas distribution pipe 5 is arranged between inside and outside cylinder, and arranges vertically many groups, is separated by dividing plate between every group, every group of gas distribution pipe distributes a plurality of along the barrel even circumferential, separate with dividing plate between each gas distribution pipe, form independently cloth air chamber, realization is controlled and even gas distribution the subregion of roller drying reactor ventilation, roller drying reactor bottom two ends are established support roller 21 and are supported, and prevent that the roller drying reactor from producing displacement in rotary course.Described feed system comprises material preheating-charging all-in-one 20, high temperature heat pump 17, the first temp probe 18 and the 2nd PLC controller 19; Described material preheating-charging all-in-one 20 adopts the hollow screw paddle structure, the material of screw blade is copper, high temperature heat pump 17 forms sealing by pipeline with hollow screw oar 27 and is connected, and the used heat that high temperature heat pump 17 reclaims from Sewage Plant passes through the material heat exchange pattern preheated feed machine; Described the first temp probe 18 is arranged on the material outlet place of preheating-charging all-in-one 20, described the 2nd PLC controller 19 is connected with high temperature heat pump with the first temp probe 18 by signal wire and is connected, by regulating the power of high temperature heat pump 17, make the mud temperature in material preheating-charging all-in-one 20 exits reach set(ting)value; Described humiture on-line monitoring feedback system comprises for the second temp probe 16 of substrate temperature in monitoring roller drying reactor, for humidity sensor 15 and a PLC controller 14 of monitoring main extraction pipe 25 gas humidities; The PLC controller is connected by control circuit and air feed pump 10, air supply header flow director 11 are connected, bleed with off-gas pump house steward's flow director 13, air-supply duct angular displacement sensor, extraction pipe angular displacement sensor, the second temp probe 16, humidity sensor 15, regulates air demand and rate of air sucked in required to the roller drying reactor.
The angle of described roller drying reactor body axis and horizontal plane is 0.5 °～1 °, and material moves to discharge end gradually in rotary course, the urceolus diameter: length=1: 10～1: 15.
Weld 3～6 flights 26 on described inner core, flight has the effect of copying and stirring material in roller drying reactor rotary course.On inner tube wall, hole diameter is 3～5mm, realizes the even gas distribution to air, and the spacing between inner core and urceolus is 10～20cm.
When the present invention uses, first mud and amendment are mixed by the certain mass ratio, regulating its porosity, and the initial aqueous rate of mud is adjusted to 70% left and right.By material preheating-charging all-in-one 20, mud is sent into the roller drying reactor, high temperature heat pump 17 will pass through screw blade 27 thermal conduction of hollow to mud from the used heat that Sewage Plant reclaims, the first temp probe 18 that is arranged on material preheating-charging all-in-one 20 exits feeds back to the 2nd PLC controller 19, the two PLC controllers 19 with the mud temperature value and by the power that increases or reduce high temperature heat pump 17, material is preheating to set(ting)value.The roller drying reactor body is arranged on the ground at 0.5～1 °, certain inclination angle, rotation along with the roller drying reactor, mud moves to discharge end in cylinder, flight 26 in cylinder is taken up mud, make mud be in fluffy state, keep voidage preferably, prevent that effectively mud from gluing wall, caking.the air feed pump 10 of airing system stably passes into air to the roller drying reactor, be evenly distributed with the aperture of 3～5mm on inner core 3 walls, inner core 3 is 10～20cm with urceolus 2 spacings, the gas distribution that is separated into is indoor all is equipped with 1 gas distribution pipe 5, can control the valve opening and closing of suction branch flow director 9A of gas manifold flow director 9B on gas manifolds 7 and suction branch 6 and openings of sizes by a PLC controller 14 realizes the subregion of roller drying reactor ventilation is controlled and even gas distribution, air-supply duct angular displacement sensor 8B can accurately measure the angle of cylindrical shell rotation, each gas distribution pipe 5 is connected with gas manifold 7 with a suction branch 6 simultaneously, gas distribution pipe is to the reactor air feed or bleed and depend on the switching of piping flow controller, when gas distribution pipe 5 rotates on material vertical plane below, air-supply duct angular displacement sensor 8B transmission of signal is opened air-supply duct flow director 9B in this position, off-gas pump 12 constantly deflates simultaneously, flow is consistent with the air capacity that passes into, extraction pipe flow director 9A closes in this position, be in the gas distribution pipe 5 of material top, the extraction pipe flow director 9A that is attached thereto opens, air-supply duct flow director 9B closes, when the relative position of the gas distribution pipe 5 of different positions and material changes, the valve opening and closing generation respective change of the extraction pipe flow director 9A that is connected with gas distribution pipe 5 and gas manifold flow director 9B, the ventilation system that bottom realizing alternately, bleed in gas distribution-top is laid, humidity sensor 15 in humiture on-line monitoring feedback system and the second temp probe 16 feed back to a PLC controller 14 with substrate temperature and atmospheric moisture value, chip in the one PLC controller 14 carries out after analysis-by-synthesis by controlling the flow of air feed pump 10 and off-gas pump 12 data, sludge organism in the roller drying reactor-physical dryness process is automatically adjusted.
Claims (3)
1. sludge biological-physical combined drying device, this device comprises feed system, the roller drying reactor body, airing system, gas distribution pipe and humiture on-line monitoring feedback system, it is characterized in that: described airing system comprises air feed pump (10), air supply header flow director (11), main air-supply duct (24) and multichannel gas manifold (7), main air-supply duct (24) closely is connected by discharge end swivel joint (29) with multichannel gas manifold (7), each gas distribution pipe (5) connects with corresponding gas manifold (7) by pipeline, being evenly distributed with diameter on gas distribution pipe (5) is 3～5mm aperture, air-supply duct angular displacement sensor (8B) and a plurality of air-supply duct flow director (9B) are housed on every road gas manifold (7), described device also comprises air-bleed system, described air-bleed system comprises off-gas pump (12), the house steward's flow director (13) of bleeding, main extraction pipe (25) and multichannel suction branch (6), main extraction pipe (25) closely is connected by feed end swivel joint (28) with multichannel suction branch (6), each gas distribution pipe (5) connects with corresponding suction branch (6) by pipeline, and extraction pipe angular displacement sensor (8A) and a plurality of extraction pipe flow director (9A) are housed on every road suction branch (6), described roller drying reactor body comprises inner core (3), urceolus (2), thermal insulation layer (4) and drive unit, and inner core is provided with flight, and evenly has aperture on inner tube wall, described gas distribution pipe (5) is arranged between inside and outside cylinder, and arranges vertically many groups, is separated by dividing plate between every group, every group of gas distribution pipe (5) distributes a plurality of along the barrel even circumferential, each gas distribution pipe separates with dividing plate between (5), forms independently cloth air chamber, described feed system comprises material preheating-charging all-in-one (20), high temperature heat pump (17), the first temp probe (18) and the 2nd PLC controller (19), described material preheating-charging all-in-one (20) adopts the hollow screw paddle structure, and high temperature heat pump (17) forms sealing by pipeline and hollow screw oar (27) and is connected, described the first temp probe (18) is arranged on the material outlet place of material preheating-charging all-in-one (20), and described the 2nd PLC controller (19) is connected 17 with the first temp probe (18) with high temperature heat pump by signal wire) be connected, described humiture on-line monitoring feedback system comprises for second temp probe (16) of substrate temperature in monitoring roller drying reactor, for humidity sensor (15) and a PLC controller (14) of monitoring main extraction pipe (25) gas humidity, the one PLC controller (14) is connected 12 with air feed pump (10), air supply header flow director (11) with off-gas pump by control circuit), the house steward's flow director (13) of bleeding, air-supply duct angular displacement sensor (8B), extraction pipe angular displacement sensor (8A), the second temp probe (16), humidity sensor (15) be connected.
2. a kind of sludge biological-physical combined drying device according to claim 1, it is characterized in that: the angle of described roller drying reactor body axis and horizontal plane is 0.5 °～1 °, urceolus diameter: length=1:10～1:15.
3. a kind of sludge biological-physical combined drying device according to claim 1, it is characterized in that: weld 3～6 flights (26) on described inner core, on inner tube wall, hole diameter is 3～5mm, and the spacing between inner core and urceolus is 10～20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110158273 CN102295399B (en) | 2011-06-14 | 2011-06-14 | Biological and physical combined sludge drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110158273 CN102295399B (en) | 2011-06-14 | 2011-06-14 | Biological and physical combined sludge drying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102295399A CN102295399A (en) | 2011-12-28 |
| CN102295399B true CN102295399B (en) | 2013-05-22 |
Family
ID=45356109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110158273 Expired - Fee Related CN102295399B (en) | 2011-06-14 | 2011-06-14 | Biological and physical combined sludge drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102295399B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588377A (en) * | 2013-11-19 | 2014-02-19 | 合肥环坤污泥干化设备有限公司 | Sludge drying equipment |
| CN105819649B (en) * | 2015-01-07 | 2023-08-08 | 广州正晟科技有限公司 | Bottom drying type sludge drying device and method |
| CN104876415A (en) * | 2015-05-04 | 2015-09-02 | 青岛松灵电力环保设备有限公司 | Urban sludge drying treatment system |
| CN108455813B (en) * | 2017-02-22 | 2023-08-29 | 郑百祥 | Sludge treatment device |
| CN110041949A (en) * | 2019-05-09 | 2019-07-23 | 重庆富燃科技股份有限公司 | A kind of device and method of pair of powdery (or graininess) solid matter recycling treatment |
| CN111495920B (en) * | 2020-04-29 | 2022-04-08 | 中国科学院武汉岩土力学研究所 | Landfill ventilation system gas injection and extraction regulation and control method |
| CN116444122A (en) * | 2023-05-13 | 2023-07-18 | 中城院(北京)环境科技股份有限公司 | Intelligent control system and control method for efficient low-energy-consumption operation of sludge thin-layer drying |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628779A (en) * | 2009-08-21 | 2010-01-20 | 北京大学 | Method and device for drying sludge by utilizing high-temperature steam |
| CN101913744A (en) * | 2010-07-22 | 2010-12-15 | 清华大学 | Biophysical drying device and method of continuous flow sludge |
| CN201678579U (en) * | 2010-05-14 | 2010-12-22 | 东南大学 | Ultrasonic drum drier for sludge |
| CN202116416U (en) * | 2011-06-14 | 2012-01-18 | 清华大学 | Sludge biological-physical combined drying device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10103867A (en) * | 1996-09-25 | 1998-04-24 | Sanyo Electric Co Ltd | Garbage processor |
-
2011
- 2011-06-14 CN CN 201110158273 patent/CN102295399B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628779A (en) * | 2009-08-21 | 2010-01-20 | 北京大学 | Method and device for drying sludge by utilizing high-temperature steam |
| CN201678579U (en) * | 2010-05-14 | 2010-12-22 | 东南大学 | Ultrasonic drum drier for sludge |
| CN101913744A (en) * | 2010-07-22 | 2010-12-15 | 清华大学 | Biophysical drying device and method of continuous flow sludge |
| CN202116416U (en) * | 2011-06-14 | 2012-01-18 | 清华大学 | Sludge biological-physical combined drying device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-103867A 1998.04.24 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102295399A (en) | 2011-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102295399B (en) | Biological and physical combined sludge drying device | |
| CN101786784B (en) | Solar energy and recycled water dual-heat-resource heat pump sludge drying system | |
| CN101913744B (en) | Biophysical drying device and method of continuous flow sludge | |
| CN107337335A (en) | A kind of sludge drying and the equipment and technique of charing | |
| CN110671923B (en) | Vertical unpowered spiral stirring biological drying device and method | |
| CN203768195U (en) | Bio-drying and dehumidification heat pump coupled flap tower type sludge drying system | |
| CN103964661A (en) | System and method for gradient dewatering drying of sludge | |
| CN112645747B (en) | Organic fertilizer drying and fermenting process | |
| CN104289497A (en) | Multi-section semi-continuous organic refuse biological reaction device and method | |
| CN202924774U (en) | Wastewater treatment system | |
| CN208829530U (en) | A kind of three energy-efficient rotary drying equipments | |
| CN102351396B (en) | Sludge drying equipment using waste heat of landfill gas power generation | |
| CN102503068B (en) | Biological water reducing method for low-organic-content sludge | |
| CN102381826A (en) | Greenhouse-heat collector-type solar sludge drying system and method | |
| CN103524013A (en) | Wet sludge treatment method and equipment thereof | |
| CN103387932B (en) | Dry-type anaerobic reaction treatment device | |
| CN202116416U (en) | Sludge biological-physical combined drying device | |
| CN106316031A (en) | Vertical solar-enhanced deep biological sludge drying system | |
| CN204122442U (en) | The semicontinuous organic waste biological reaction apparatus of a kind of multisection type | |
| CN102992570A (en) | Electric-regenerative solar energy assisted sludge biodrying system | |
| CN202322661U (en) | Dry type anaerobic high-temperature fermentation system for organic waste | |
| CN202968346U (en) | Conducting tube type sludge drying machine | |
| CN105084697A (en) | Biology-physic combined sludge-drying apparatus | |
| CN201253494Y (en) | Waste clear-liquid secondary-steam evaporation device using drier | |
| CN104961312A (en) | Biological drying reactor of 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |