CN101792248A - Sludge diffusing, dehydrating and curing process - Google Patents

Sludge diffusing, dehydrating and curing process Download PDF

Info

Publication number
CN101792248A
CN101792248A CN200910051065A CN200910051065A CN101792248A CN 101792248 A CN101792248 A CN 101792248A CN 200910051065 A CN200910051065 A CN 200910051065A CN 200910051065 A CN200910051065 A CN 200910051065A CN 101792248 A CN101792248 A CN 101792248A
Authority
CN
China
Prior art keywords
mud
sludge
curing
dehydrating
diffusing
Prior art date
Application number
CN200910051065A
Other languages
Chinese (zh)
Other versions
CN101792248B (en
Inventor
盛贻伯
刘枫
陈中兴
Original Assignee
上海久桓环境资源开发有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 上海久桓环境资源开发有限公司 filed Critical 上海久桓环境资源开发有限公司
Priority to CN2009100510658A priority Critical patent/CN101792248B/en
Publication of CN101792248A publication Critical patent/CN101792248A/en
Application granted granted Critical
Publication of CN101792248B publication Critical patent/CN101792248B/en

Links

Abstract

The invention discloses a sludge diffusing, dehydrating and curing process, which relates to a sludge dehydrating and curing process. The process comprises a sludge ageing flow, a curing process flow and a hazard-free treatment, wherein the sludge ageing flow comprises the following steps: (1) conveying the sludge to a sludge storage pool for storing sludge, and covering the sludge storage pool; (2) transmitting the sludge to a stirrer from the sludge storage pool by using transmission equipment and stirring the sludge; and (3) sequentially adding curing reagents into the stirrer with stirring according to the quantity of the sludge in the stirrer, and stirring the sludge and the curing reagents uniformly by using the stirrer to dissolve the reagents; the curing process flow comprises the following steps: conveying the aged sludge to a cement site, spreading the sludge to form a stack with the thickness of no more than 50 centimeters, and turning the sludge by using a turning machine after the upper sludge is comparatively dry to make the sludge contact the air as much as possible and accelerate the evaporation of the dehydrated water; and the hazard-free treatment comprises the step of burning the sludge serving as a fuel after the curing process. The dehydrating effect is good, and the dehydrated sludge can be used as the fuel.

Description

Sludge diffusing, dehydrating and curing process
Technical field
The present invention relates to sludge treatment technique, be specifically related to a kind of sludge dewatering curing process.
Background technology
Mud is the waste water that has been untreated, or a kind of solid-state castoff.Along with industrial expansion, and the increase of people's sanitary wastewater quantity discharged, the sludge of sewage treatment plants quantity discharged increases thereupon.The annual generation in the expectation whole nation surpasses 3,340 ten thousand tons of mud, and the processing of these mud and disposal will expend a large amount of financial resources and resource.The discharging of mud says it also is the discharging of pollutent from essence, and the discharging that reduces mud is the important content that reduces discharging equally.
Contained water has intergranular interstitial water, capillary water, mud granule planar water and granule interior water in the mud.Moisturely in the mud reach at 99% o'clock, belong to Newtonian fuid, its flow characteristics and water are seemingly; When it is moisture is 97% when following, and its flow characteristics has semi plastic or plastic fluid characteristic.
Particle is to repel mutually mostly in the mud.At first be because hydration, have one deck or which floor water to be adsorbed in particle surface and hindered particle and mutually combine.Secondly, mud granule is generally all electronegative, shows as repulsion each other, has caused stable dispersion state.
The outer material of the born of the same parents of microorganism is rich in carbohydrate in the mud, and when the energy level of system hanged down, dewatering performance of sludge improved along with the increase of contents of saccharide, and when the microflora energy was high, the cohesion of carbohydrate was not seen and can be ignored.Mud contains the fat and the protein of a great deal of, dewatering performance of sludge variation thereupon when its content increases.When having thread fungus and hypertrophy in the mud, will as super colloidal solid, cause the dewatering of mud to descend.The mud of mud can have influence on the size of mud granule age, thereby has influence on the dewatering of mud.Mud granule is more little, and the particulate specific surface area is big more, means higher hydration levels and bigger dehydration resistance.
Less solid content in the mud of Sewage Plant, as being rich in organic carbon hydrate etc. in the sewage plant excess sludge of Tianjin, solids content is between 1.4-2.0%, and wherein carbohydrate accounts for 23%, and protein accounts for 38%.The mechanical property of mud (generally representing with slip resistance) is very poor, is unsuitable for landfill.The perviousness of mud is very low, is difficult to reduce its water content by fixed or airing and improves intensity.Enter environment if municipal sludge is dealt with improperly, not only can cause the waste of the resource and the energy, and can cause certain harm surrounding environment.
Usually the stable of mud and dehydration are called the processing of mud, with compost, landfill, mummification and the heat treated of mud and finally utilize the disposal that is called mud.Sludge incineration is mud the most completely.It can make the whole carbonizations of organism, and pathogen kill can reduce sludge volume to greatest extent.Burning process energy consumption height consumes a large amount of energy, the running cost height.Burning can be divided into two big classes: a class is that dewatered sludge is directly burned with incinerator; Another kind of is to burn after the mummification of dewatered sludge elder generation again.The former needs consumes energy, and the latter can obtain to utilize the heat that is worth.
All need in the above-mentioned various sludge handling process mud in places such as river course, sewage work is transported to sludge treatment factory.Sludge treatment factory need guarantee that in the sludge handling process, what the peculiar smell of mud was tried one's best does not distribute to the external world, and is good with the environment around guaranteeing.Sludge treatment factory can stop emission of bad smell preferably in the working process of sludge treatment device now, but mud distributing of peculiar smell in the transfer process of each link still is difficult to stop.Especially be poured in the mud storage pool of sludge treatment factory from the mud transport trolley, and transfer in the mud storage pool the process of other treatment facilities, the peculiar smell that mud produces is difficult to stop the most.
The sludge treatment purpose mainly contains 4: the one, and stabilization makes mud stop degraded by processing; The 2nd, innoxious, kill parasitic ovum and pathogenic micro-organism; The 3rd, minimizing, the volume of minimizing sludge ultimate disposal reduces sludge treatment and ultimate disposal expense; The 4th, resource utilization and ultimate disposal.When handling mud, realize turning harm into good, the purpose of recycle, protection environment.In the processing and disposal process of sludge stabilization, minimizing and resource utilization, dehydration is the process that must experience, and it has become the gordian technique of sludge treatment and disposal.
The treatment process that can finish above-mentioned 4 main sludge treatment purposes now seldom, and cost height, weak effect.Particularly the dehydration link of mud is the difficult problem in the sludge treatment technique.
Summary of the invention
The object of the present invention is to provide a kind of sludge diffusing, dehydrating and curing process, has good leak tightness, can effectively stop, be poured into from the mud transport trolley in the mud storage pool of sludge treatment factory, and in the mud storage pool, transfer to the process of other treatment facilities, the emission of bad smell of mud is to extraneous.Dehydrating effect is good, and the mud after the dehydration can be used as fuel and uses.
Technical problem solved by the invention can realize by the following technical solutions:
Sludge diffusing, dehydrating and curing process is characterized in that, comprises
Mud ageing flow process:
(1) transportation mud arrives in the storage basin that stores mud, and adds a cover on storage basin;
(2) by transmission equipment mud being sent to stirrer from storage basin stirs;
(3) according to the quantity of the mud in the stirrer, in whipping process, add in order simultaneously and solidify medicament, by stirrer mud and solidify medicament stir evenly stir molten;
The craft flow process:
Transporting to cement court through aged mud, spread out into the stacking of the thick 50cm of being not more than, upper strata mud comparatively after the drying, turns over throwing with turnover throwing machine, makes the many as far as possible ingresss of air of mud, accelerates the evaporation of dehydration;
Harmlessness disposing:
Burning will act as a fuel through the mud of craft.
Described storage basin is added a cover and can be prevented that stink from distributing, and can also prevent to rain and have people or livestock to fall into.If mud is to carry by conveying belt from the storage basin to the stirrer, conveying belt also will be added a cover, and can prevent that stink from distributing and rain.
Described craft is provided with in the factory building on roof one and carries out, and two of described factory building has ventilating shaft and makes indoor maintenance negative pressure, helps the evaporation of moisture and the circulation of air.
Water spray odor removal is housed, to reduce secondary pollution to greatest extent in the described well to air.
Lay the cloaca of sewage collecting and discharging in the described factory building, the sewage that produces in the collection process can will return sewage work.
This health mode can realize round-the-clock health, is not subjected to weather effect, and the foul smell that can avoid the health process to produce leaks.Two of factory building has ventilating shaft and makes indoor maintenance negative pressure, helps the evaporation of moisture and the circulation of air.Water spray odor removal is housed, to reduce secondary pollution to greatest extent in the well to air.Lay the cloaca of sewage collecting and discharging in the factory building, collect issuable sewage (water on every facility floor all is considered as sewage), foul smell absorption liquid and sewage are all included sewer line in, return sewage work, or directly do other processing.
Mud has been realized minimizing, stabilization after craft, can be used as fuel and use, and burns and accomplishes harmlessness disposing such as delivering to the cement mill.
Described curing medicament comprises mineralizer, curing additive, coupling agent, retardant and swelling agent,
(1) mud is under the effect of mineralizer, rapidly in conjunction with mud interstitial water, free water and in the mud granule surface condensation.In the process that stirs, do not produce percolate.
(2) under the effect of curing additive, mud is basic forming at short notice, and certain plasticity is arranged.
(3) under the effect of coupling agent, change particle surface character, overcome intergranular hydration and electrostatic interaction, realize contacting better between mud granule and additive particles, particle and the particle.
(4) under the effect of retardant and swelling agent, rely on the mutual multidimensional traction bridge formation of inorganic particulate in mineralizer and extracellular polymeric, mineralizer and the mud granule, mud is shaped gradually and hardness occurs, the mud of plasticity begins microorganism cells is disintegrated from skin, discharge a large amount of interstitial waters, make it to become free water.Planar water and capillary water also overflow mud granule in succession, and the mud of dehydration makes up three-dimensional porous framework.The plasticity of mud weakens from outside to inside in time, and the volume of mud reduces rapidly with the reduction of water ratio, and the hardness of mud improves with the increase of dehydration rate.
With regard to the independent mineralizer that can finish above-mentioned individual event function, curing additive, coupling agent, retardant and the swelling agent that can finish above-mentioned individual event function, kind is a lot, and those skilled in the art can find.It is that those skilled in the art are difficult to expect under the situation that does not spend creative work that but the mode that adopts aforesaid combination is used for the method for sludge treatment.
With respect to the original quality of mud, the concentration that adds of mineralizer is 4.5~6.0%, and curing additive contains coagulating agent, and the concentration that adds of coagulating agent is 0.8~1.2%, and the concentration that adds of coupling agent is 0.08~0.12%; The concentration that adds of swelling agent is 1.0~1.3%.Under the adding technology of determining, mud remained between the water ratio 12~20% after the dehydration rate of mud can reach 89~95%, 6 days.Such mud can be used as fuel combustion.
Description of drawings
Fig. 1 is an integrated artistic schematic flow sheet of the present invention.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
With reference to Fig. 1, the integrated artistic flow process of sludge diffusing, dehydrating and curing process is that advanced mud ageing flow process 1 is carried out craft flow process 2 again, carries out harmlessness disposing 3 more successively.
Mud ageing flow process 1:(1) transportation mud arrives in the storage basin that stores mud, and adds a cover on storage basin.Storage basin is added a cover and can be prevented that stink from distributing, and can also prevent to rain and have people or livestock to fall into.If mud is to carry by conveying belt from the storage basin to the stirrer, conveying belt also will be added a cover, and can prevent that stink from distributing and rain.
(2) by transmission equipment mud being sent to stirrer from storage basin stirs.
(3) according to the quantity of the mud in the stirrer, in whipping process, add in order simultaneously and solidify medicament, by stirrer mud and solidify medicament stir evenly stir molten.
(3) the curing medicament that adopts in comprises mineralizer, curing additive, coupling agent, retardant and swelling agent.
Mud is under the effect of mineralizer, rapidly in conjunction with mud interstitial water, free water and in the mud granule surface condensation.In the process that stirs, do not produce percolate.
Under the effect of curing additive, mud is basic forming at short notice, and certain plasticity is arranged.
Under the effect of coupling agent, change particle surface character, overcome intergranular hydration and electrostatic interaction, realize contacting better between mud granule and additive particles, particle and the particle.
Under the effect of retardant and swelling agent, rely on the mutual multidimensional traction bridge formation of inorganic particulate in mineralizer and extracellular polymeric, mineralizer and the mud granule, mud is shaped gradually and hardness occurs, the mud of plasticity begins microorganism cells is disintegrated from skin, discharge a large amount of interstitial waters, make it to become free water.Planar water and capillary water also overflow mud granule in succession, and the mud of dehydration makes up three-dimensional porous framework.The plasticity of mud weakens from outside to inside in time, and the volume of mud reduces rapidly with the reduction of water ratio, and the hardness of mud improves with the increase of dehydration rate.
With regard to the independent mineralizer that can finish above-mentioned individual event function, curing additive, coupling agent, retardant and the swelling agent that can finish above-mentioned individual event function, kind is a lot, and those skilled in the art can find.It is that those skilled in the art are difficult to expect under the situation that does not spend creative work that but the mode that adopts aforesaid combination is used for the method for sludge treatment.
Craft flow process 2:
Transporting to cement court through aged mud, spread out into the stacking of the thick 50cm of being not more than, upper strata mud comparatively after the drying, turns over throwing with turnover throwing machine, makes the many as far as possible ingresss of air of mud, accelerates the evaporation of dehydration.Craft is provided with in the factory building on roof one and carries out, and two of described factory building has ventilating shaft and makes indoor maintenance negative pressure, helps the evaporation of moisture and the circulation of air.Water spray odor removal is housed, to reduce secondary pollution to greatest extent in the well to air.Lay the cloaca of sewage collecting and discharging in the factory building, the sewage that produces in the collection process can will return sewage work.
This health mode can realize round-the-clock health, is not subjected to weather effect, and the foul smell that can avoid the health process to produce leaks.Two of factory building has ventilating shaft and makes indoor maintenance negative pressure, helps the evaporation of moisture and the circulation of air.Water spray odor removal is housed, to reduce secondary pollution to greatest extent in the well to air.Lay the cloaca of sewage collecting and discharging in the factory building, collect issuable sewage (water on every facility floor all is considered as sewage), foul smell absorption liquid and sewage are all included sewer line in, return sewage work, or directly do other processing.
Harmlessness disposing 3:
Burning will act as a fuel through the mud of craft.
Mud has been realized minimizing, stabilization after craft, can be used as fuel and use, and burns and accomplishes harmlessness disposing such as delivering to the cement mill.
With respect to the original quality of mud, the concentration that adds of mineralizer is 4.5~6.0%, and the concentration that adds of coagulating agent is 0.8~1.2%, and the concentration that adds of coupling agent is 0.08~0.12%; The concentration that adds of swelling agent is 1.0~1.3%.Under the adding technology of determining, mud remained between the water ratio 12~20% after the dehydration rate of mud can reach 89~95%, 6 days.Such mud can be used as fuel combustion.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not subjected to the restriction of above-mentioned using method; that describes in above-mentioned using method and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (7)

1. sludge diffusing, dehydrating and curing process is characterized in that, comprises
Mud ageing flow process:
(1) transportation mud arrives in the storage basin that stores mud, and adds a cover on storage basin;
(2) by transmission equipment mud being sent to stirrer from storage basin stirs;
(3) according to the quantity of the mud in the stirrer, in whipping process, add in order simultaneously and solidify medicament, by stirrer mud and solidify medicament stir evenly stir molten;
The craft flow process:
Transporting to cement court through aged mud, spread out into the stacking of the thick 50cm of being not more than, upper strata mud comparatively after the drying, turns over throwing with turnover throwing machine, makes the many as far as possible ingresss of air of mud, accelerates the evaporation of dehydration;
Harmlessness disposing:
Burning will act as a fuel through the mud of craft.
2. sludge diffusing, dehydrating and curing process according to claim 1 is characterized in that, described curing medicament comprises mineralizer, curing additive, coupling agent, retardant and swelling agent,
(1) mud is under the effect of mineralizer, rapidly in conjunction with mud interstitial water, free water and in the mud granule surface condensation;
(2) under the effect of curing additive, mud is basic forming at short notice, and certain plasticity is arranged;
(3) under the effect of coupling agent, change particle surface character, overcome intergranular hydration and electrostatic interaction, realize contacting better between mud granule and additive particles, particle and the particle;
(4) under the effect of retardant and swelling agent, rely on mineralizer and extracellular polymeric, the mutual multidimensional traction of inorganic particulate is built bridge in mineralizer and the mud granule, mud is shaped gradually and hardness occurs, the mud of plasticity begins microorganism cells is disintegrated from skin, discharge a large amount of interstitial waters, make it to become free water, planar water and capillary water also overflow mud granule in succession, the mud of dehydration makes up three-dimensional porous framework, the plasticity of mud weakens from outside to inside in time, the volume of mud reduces rapidly with the reduction of water ratio, and the hardness of mud improves with the increase of dehydration rate.
3. sludge diffusing, dehydrating and curing process according to claim 2, it is characterized in that, original quality with respect to mud, the concentration that adds of mineralizer is 4.5~6.0%, curing additive contains coagulating agent, the concentration that adds of coagulating agent is 0.8~1.2%, and the concentration that adds of coupling agent is 0.08~0.12%; The concentration that adds of swelling agent is 1.0~1.3%.
4. sludge diffusing, dehydrating and curing process according to claim 3 is characterized in that described storage basin is added a cover, and mud is to carry by conveying belt from the storage basin to the stirrer, and conveying belt is also added a cover.
5. according to claim 2 or 3 described sludge diffusing, dehydrating and curing process, it is characterized in that, described craft is provided with in the factory building on roof one and carries out, and two of described factory building has ventilating shaft and makes indoor maintenance negative pressure, helps the evaporation of moisture and the circulation of air.
6. sludge diffusing, dehydrating and curing process according to claim 5 is characterized in that, water spray odor removal is housed, to reduce the secondary pollution to air to greatest extent in the described well.
7. sludge diffusing, dehydrating and curing process according to claim 6 is characterized in that, lays the cloaca of sewage collecting and discharging in the described factory building, the sewage that produces in the collection process.
Mud has been realized minimizing, stabilization after craft, can be used as fuel and use, and burns and accomplishes harmlessness disposing such as delivering to the cement mill.
CN2009100510658A 2009-05-12 2009-05-12 Sludge diffusing, dehydrating and curing process CN101792248B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100510658A CN101792248B (en) 2009-05-12 2009-05-12 Sludge diffusing, dehydrating and curing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100510658A CN101792248B (en) 2009-05-12 2009-05-12 Sludge diffusing, dehydrating and curing process

Publications (2)

Publication Number Publication Date
CN101792248A true CN101792248A (en) 2010-08-04
CN101792248B CN101792248B (en) 2012-06-20

Family

ID=42585203

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009100510658A CN101792248B (en) 2009-05-12 2009-05-12 Sludge diffusing, dehydrating and curing process

Country Status (1)

Country Link
CN (1) CN101792248B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102633421A (en) * 2012-04-18 2012-08-15 湖南大学 Sludge drying method
CN104973749A (en) * 2015-07-10 2015-10-14 盐城琛丹低碳技术研究院有限公司 Sludge solidification method
CN105481223A (en) * 2014-01-23 2016-04-13 天紫环保装备制造(天津)有限公司 Centrifugal sludge dewatering type small-sized innocent sludge treatment system
CN107555741A (en) * 2017-09-28 2018-01-09 上海久树环境科技有限公司 Mud micro-pore ecological curing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102633421A (en) * 2012-04-18 2012-08-15 湖南大学 Sludge drying method
CN105481223A (en) * 2014-01-23 2016-04-13 天紫环保装备制造(天津)有限公司 Centrifugal sludge dewatering type small-sized innocent sludge treatment system
CN104973749A (en) * 2015-07-10 2015-10-14 盐城琛丹低碳技术研究院有限公司 Sludge solidification method
CN104973749B (en) * 2015-07-10 2017-04-12 盐城琛丹低碳技术研究院有限公司 Sludge solidification method
CN107555741A (en) * 2017-09-28 2018-01-09 上海久树环境科技有限公司 Mud micro-pore ecological curing
CN107555741B (en) * 2017-09-28 2021-04-23 上海久树环境科技有限公司 Sludge micropore ecological solidification method

Also Published As

Publication number Publication date
CN101792248B (en) 2012-06-20

Similar Documents

Publication Publication Date Title
Wang et al. Possible solutions for sludge dewatering in China
CN101234841B (en) Sludge concentration dehydration method
CN101654318B (en) Excrement centralized processing method
US6908554B2 (en) Organic waste treatment method
CN101597132B (en) Biological drying method of urban wastewater sludge
CN103663887B (en) Sludge treatment method and treatment system
CN1104400C (en) Improved compositing system
US4174371A (en) Integrated solar heated resource transformation system
CN101289336B (en) Integral treatment method for city household refuse
CN101746941B (en) Biological drying method for treating dewatered sludge of urban sewage plant
JP2014000486A (en) Sludge treatment apparatus, wastewater treatment apparatus, sludge treatment method, and wastewater treatment method
CN102964149B (en) Pollution abatement method for livestock and poultry farm
CN1294106C (en) High-temperature composting process for waste by the forced combination with natural ventilation
CN101580336B (en) Processing method of sludge containing oil and methanol
CN103951146B (en) A kind of mud decrement and mummification method for combined use
CN102139999B (en) Reducing and recycling treatment method for biological activated sludge
CN100999419A (en) Method of ecological treating organic garbage using earthworm and its organic fertilizer production equipment
JP6097761B2 (en) Processes, equipment and systems for the treatment of livestock wastewater
EP2650273B1 (en) Resource utilizing method of refuses in urban and rural
CN102491608B (en) Production method of sludge biomass environment-friendly fuel
CN102180583A (en) Technique for conditioning sludge by using synergic action of Fenton reagent and polyacrylamide
CN102897992B (en) Method for solidifying and stabilizing sludge from urban sewage treatment plant
Hessami et al. Anaerobic digestion of household organic waste to produce biogas
CN102059242B (en) Novel method for comprehensive treatment of municipal solid wastes
RU2296731C2 (en) Method of production of organo-mineral fertilizers and production line for realization of this method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 201400 FENGXIAN, SHANGHAI TO: 200042 JING'AN, SHANGHAI

ASS Succession or assignment of patent right

Owner name: LV ZHIHAO

Free format text: FORMER OWNER: SHANGHAI JIUGENG ENVIRONMENTAL NATURAL RESOURCES DEVELOPMENT CO., LTD.

Effective date: 20121108

TR01 Transfer of patent right

Effective date of registration: 20121108

Address after: 200042 Shanghai city Jingan District Yanping Road 175 Lane No. 76 room 208

Patentee after: Lv Zhihao

Address before: 201400, room 2, building 828, 306 East yuan Lu, Shanghai, Fengxian District

Patentee before: Shanghai Jiuhuan Environmental Natural Resources Development Co., Ltd.

C41 Transfer of patent application or patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120620

Termination date: 20160512