CN106746430A - A kind of methods and applications of recycling sludge treatment - Google Patents
A kind of methods and applications of recycling sludge treatment Download PDFInfo
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- CN106746430A CN106746430A CN201710083865.2A CN201710083865A CN106746430A CN 106746430 A CN106746430 A CN 106746430A CN 201710083865 A CN201710083865 A CN 201710083865A CN 106746430 A CN106746430 A CN 106746430A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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Abstract
The invention discloses a kind of methods and applications of recycling sludge treatment, the method is that being transferred to carries out broken wall treatment using mixing with magnetic medium after cellulase treatment in sludge cell wall breakage device by sludge；Broken wall treatment gained sludge is by after magnetic separation recovery magnetic medium, carrying out separation of solid and liquid；Separation of solid and liquid resulting solution component obtains organic matter fraction by concentration, alcohol precipitation, drying；Separation of solid and liquid gained solid constituent obtains carbonized particles by charing, and organic matter fraction is used as mineral floating surface modifier, carbonized particles as fuel or sorbing material, is really embodied as recycling sludge utilization；The method can be quick, efficient, is realized with a low cost sludge cell wall breakage, and useful constituent is extracted from sludge, and process is simple and convenient to operate, and meets industrialization production requirements.
Description
Technical field
The present invention relates to a kind of method for sludge treatment, more particularly to a kind of sludge wall breaking technology and being extracted from sludge has
The method that machine matter component and carbonized particles realize recycling sludge treatment, belongs to sewage resource technical field of comprehensive utilization.
Background technology
After National Development and Reform Committee in 2007 proposes the bill of energy-saving and emission-reduction, more and more subtract there has been proposed energy-conservation
The gold-idea of row.Plus the natural calamity and the big phenomenon of climate change that occur again and again in recent years, country proposed in 2008 again
The concept of " low-carbon (LC) ", advocates low-carbon (LC) and lives to this year also increasing people.With economic fast development, China
The handling rate of municipal sewage and industrial wastewater is also being improved year by year, while also a large amount of along with also being generated in treatment stain disease
Sludge, it is reported that, 2009, China urban wastewater treatment firm statistics had 1992, and annual sewage load is up to 28,000,000,000 m3,
Doubled compared to " 15 " initial stage, produce about 20,050,000 tons of the sludge of moisture content 80%.Is produced from each municipal sewage plant of China
Raw wet mud up to more than 3,000 ten thousand tons, will account for more than the 5% of China year total solid waste discharge amount.If sludge treatment is not
When, substantial amounts of limited arable land is not only taken, can also serious pollution be caused to ground surface environment and underground water.According to statistics, at this stage
The municipal sludge of China and the treatment utilization rate of industrial sludge less than 10%, away from the treatment utilization rate in such as U.S. of developed country
60%~70% differs greatly.In sewage disposal gross investment, the cost of sludge treatment facilities accounts for 50%~75%.And state
The annual expense for being used for Sludge landfill of family is about 50~100 yuan/ton or so, and by knowing above, China produces 25,000,000 within 2009
The sludge of ton, then total cost is about 125000~2,500,000,000 yuan, counts 1,200,000,000~2,500,000,000 yuan.So exploitation is new, advanced
Technology, effectively process sludge disposal, be allowed to turn waste into wealth, and not damage to the environment, be detrimental to health, open up environment friend
Good road, it is target that we persevere to go on the track of sound progress.
Activated sludge process is current dirty water living creature processing technique most widely used in the world, but its drawback is to produce greatly
Activated sludge more than the Retained of amount.These residual active sludges usually contain a certain amount of poisonous and harmful substance (such as parasitic ovum, cause of disease
Microorganism, heavy metal) and not stabilized organic matter, if not carrying out appropriate treatment with disposal, it will environment is caused directly
Connect or potentially pollute.Activated sludge is micropopulation and organic substance that they are depended on and the general name of inorganic substances.It is micro-
Biocenose mainly includes Fine bacterium, protozoan and algae etc..Wherein, Fine bacterium and protozoan are two main major classes.Activity
Sludge from the appearance, like wadding suede particle, is referred to as biological floes, and its particle diameter is typically in the range of between 0.02-0.2MM.City is dirty
The treatment and disposal of aquatic organism treatment plant excess sludge are a more stubborn problems.Its processing cost accounts for sewage treatment plant
The 25%40% of overall running cost, even as high as 60%；The sludge mesophilic anaerobic digestion technique for generally using, has reaction speed
Degree is slow, and residence time of the sludge in pond is long, and tank volume is huge, and operational administrative is complicated, and methane content is low in aerogenesis lacks
Point.During anaerobic sludge digestion, sludge hydrolytic is rate-limiting step.Using certain pretreatment mode, can break Fine cell walls
Split, Fine intracellular inclusion dissolutions, accelerate the hydrolytic process of sludge.So as to reach shortening digestion time, digestion pool volume is reduced, improved
The purpose of methane production.At present, the method both at home and abroad on sludge Fine born of the same parents' wall breaking technology has Physical and chemical method, and Physical has
Heat treating process, high-pressure injection method, ultrasonication method, freezing processing method, irradiation method；Chemical method has alkali process method, ozone oxidation
Method etc..Using different broken wall skill wood, the decomposition of Fine born of the same parents in sludge and the release of intracellular organic matter can be promoted, improve sludge
Digestic property, accelerates digestion rate, improves gas production.In engineer applied, according to actual needs, new excess sludge is developed
Fine born of the same parents' wall breaking technology is still the direction of primary study from now on.
Sludge carbonization technology is that occur in the nineties in last century, and its theoretical basis research stage is 1980-1990.
To middle nineteen nineties, there is the small-scale production phase one by one.Sludge of 97 years Mitsubishis in space portion is carbonized
Factory rules and regulations mould is 20 ton days；The same year Thermo Energy establishes a sludge carbonization experiment in California Colton cities
Factory rules and regulations mould is 5 tons of dry mud of daily treatment.Because sludge carbonization has its obvious superiority, then since 2000, sludge carbonization
Technology comes into the large-scale business promotion stage abroad.At present, Japan's You Duo companies production and selling carbonization
Device.Compare the carbide furnace of famous You Renyuan companies, Mitsubishi Yokohama make sludge carbonizing plant, bar industrial group
30 tons of sludge carbonizing plant is processed daily.In Tokyo sewer technology exhibition in 2005, the Japanese special strain formula of day ring
Commercial firm is even proposed the sludge carbonization decrement car of standard.The car can at any time arrive any place for having sludge and carry out carbon to sludge
Change.Bar industrial group of Japan have also developed sludge continuous carbonization technology in the recent period.During this period, the U.S. is also constantly improving sludge
Carbonization technology.At present in the big Los Angeles in Southern California, by the investigation of nearly 2 years, compare, determined and established a place daily
675 tons of carbonization factories of sludge of reason, are built by energy technology company (Enertech Environmental Co.), run.Except
Japan and the U.S., Australian ESI companies have also built a carbonization treatment factory for 100 ton per days.In recent years, China also existed
Constantly to international joint, carbonization technology enters domestic market.On January 11st, 2009, old China hand is limited with technical advice consultant
Company, Japanese Tomoe Engineering Co., Ltd., Hubei fight real urban and rural environment energy project Co., Ltd do jointly " on Sino-Japan sludge carbon
Change technical seminar " successfully held in the Wuhan City, Hubei Province vast hotel of flood.In meeting, China prepares the advanced carbonization of Introduced from Japan
Technology and through digesting and assimilating optimization, for Wuhan sludge treatment project.Meanwhile, Harbin Ning Zhi Science and Technology Ltd.s also release
Drying sludge carbonizing apparatus.
However, sludge moisture content is big, dried carbon high cost, recycling sludge still faces huge problem.Therefore, how
The high-efficiency wall breaking reduction sludge moisture content of sludge organism component is realized, and realizes the high-efficiency comprehensive utilization of sludge resource, for solution
Certainly China or even world's water treatment problems are significant.
The content of the invention
There is the low defect of high cost, efficiency for various treatment sludge broken walls and method of resource in the prior art, this
It is to provide a kind of energy quickly, efficiently that the purpose of invention is, be realized with a low cost sludge organism body cell broken wall, and carried from sludge
The method that organic matter and carbonized particles thing realize recycling sludge is taken, the method process is simple and convenient to operate, meet industrial metaplasia
Produce and require.
In order to realize above-mentioned technical purpose, the invention provides a kind of recycling sludge treatment method, the method be by
Sludge mixes using after cellulase treatment with magnetic medium, and being transferred to carries out broken wall treatment in sludge cell wall breakage device；At broken wall
Reason gained sludge is by after magnetic separation recovery magnetic medium, carrying out separation of solid and liquid；Separation of solid and liquid resulting solution component is by concentration, alcohol
It is heavy, dry, obtain organic matter fraction；Separation of solid and liquid gained solid constituent obtains carbonized particles by charing.
Preferred scheme, use the process of cellulase treatment sludge for：Add in addition 100~500g/t ratios in sludge
Enter biology enzyme, stir speed (S.S.) be 300~500r/min, temperature be 15~30 DEG C, pH be 5~8 under conditions of react 1~3h.
More preferably scheme, the biology enzyme is by alpha-glucanase, 1,4 beta-glucanase, pectase, protease, mannose
Enzyme, glusulase example 10 in mass ratio:8~12:1~3:0.5~1.5:0.5~1.5:0.5~1.5 composition.Biology enzyme can promote
Enter cell-wall components decomposition, such as cellulose etc..
Preferred scheme, addition of the magnetic medium in sludge is 1~5kg/t.
Preferred scheme, the granularity of the magnetic medium is less than 37 μm.
More preferably scheme, the magnetic medium is included in magnetic iron ore, maghemite, magnetic iron ore, rareearth magnetic material
It is at least one.
Preferred scheme, the sludge cell wall breakage device include jet feeding system, ore pulp cycle of higher pressure cavitation system,
High intensity magnetic medium grinding system and cooling system；The high intensity magnetic medium grinding system includes magnetic stirring cylinder and stirs
Device is mixed, agitator is arranged on centre in magnetic stirring cylinder, abrasive media is filled with magnetic stirring cylinder；The magnetic stirring
Cylinder top is provided with discharging opening, and bottom is provided with charging aperture and circulation slurry inlet；The jet feeding system includes pan feeding pipeline, enters
Pipe material is provided with Venturi tube and to stock pump, and pan feeding pipeline one end is connected with the charging aperture；The ore pulp cycle of higher pressure is empty
Change system includes circulating line, and circulating line is provided with Venturi tube and circulating pump, circulating line one end and circulation slurry inlet
Connection, the other end stretches into the top in magnetic stirring cylinder from magnetic stirring cylinder top；The magnetic stirring cylinder is outside to be provided with cooling
System.
More preferably scheme, the magnetic stirring cylinder inwall is provided with magnetic liner plate.The setting Main Function of magnetic liner plate is
It is that the surface for protecting magnetic stirring cylinder, magnetic liner plate can adsorb a part of ferromagnetism particle, forms layer protective layer, reduces
To the impact and abrasion of magnetic stirring cylinder in grinding process.
More preferably scheme, the magnetic field intensity of the magnetic liner plate is 500~800GS.
More preferably scheme, the agitator includes teeter column, and teeter column is provided with some groups of stirring rod of cross arrangement；
Described teeter column one end extends to and is connected with transmission system outside magnetic stirring cylinder top.Can make grinding by setting multigroup stirring rod
Medium and ultra-fine magnetic grinding aid medium give full play to its abrasive action to sludge, and promotion microbial body is quick, high-efficiency wall breaking.
More preferably scheme, filling rate of the abrasive media in magnetic stirring cylinder is 30~60%；The grinding medium
Matter includes the steel ball and/or Ceramic Balls that sphere diameter is Φ 120mm, Φ 100mm, Φ 80mm, Φ 60mm and Φ 40mm, wherein, sphere diameter
For the steel ball and/or Ceramic Balls quantitative proportion of Φ 120mm and Φ 100mm be 30%~40%, sphere diameter be Φ 80mm steel ball and/
Or Ceramic Balls quantitative proportion is that steel ball and/or Ceramic Balls quantitative proportion that 30%~40%, sphere diameter is Φ 60mm and Φ 40mm are
20~40%.
More preferably scheme, the cooling system includes sandwich-type circulating water set, sandwich-type circulating water set bag
It is rolled in magnetic stirring cylinder outside.
More preferably scheme, the sandwich-type circulating water set bottom is provided with cooling water inlet, and top is provided with cooling water
Outlet.
More preferably scheme, most carefully place's maximum pressure is not less than 30MPa, and most thin place and thickness ratio to the Venturi tube
Example is not more than 1:50；The most thin place of the Venturi tube is provided with air intake.By setting text on circulating line and pan feeding pipeline
Venturi, on the one hand produces superpower pressure, the swelling fracture of cell can be caused during moment supercharging, release of pressure, on the other hand
Getter action can form bubble cavitation during release of pressure, and the effect of bursting is played to cell membrane, while the microfine for being formed
Bubble can promote agglomerated particle to disperse during separating out, becoming greatly by stretching action.
Preferred scheme, during broken wall treatment, the stir speed (S.S.) of agitator is more than 5000r/min, and broken time is 5~
15min。
In technical scheme, magnetic medium is with the addition of in sludge, magnetic medium effect is embodied in two aspects, one
Aspect, magnetic medium absorption forms magnetic-particle on particulate matter, and Magnetism granule is adsorbed on magnetic liner plate surface, played to magnetic
Property mixing drum in play a protective role, on the other hand, ultra-fine magnetic grinding aid medium particulate matter is played extruding, friction or shearing work
With, promote sludge organism body cell wall broken wall, while magnetic medium can be recycled by magnetic separation technique, it is easy to use.
It is to pass through sludge raw material for the detailed process of sludge cell wall breakage that the present invention utilizes sludge cell wall breakage device
In the magnetic stirring cylinder of jet feeding system input sludge organism body cell means for breaking walls, opening transmission system stirs agitator
Mix, sludge carries out grinding under abrasive media and magnetic medium effect, makes sludge organism body cell broken wall, while it is high to open ore pulp
Pressure circulation cavitation system makes sludge slurry in magnetic stirring cylinder inner-outer circulation, and opens in cooling system maintenance magnetic stirring cylinder
Temperature is constant, until sludge organism body cell broken wall is completed.
Sludge raw material in technical scheme is activated sludge.Such as municipal wastewater and trade effluent are by biochemical
The sludge that treatment is obtained.These sludge include substantial amounts of microbial body.Its moisture content is general 65~85%.
Magnetic medium in technical scheme in sludge can be reclaimed by magnetic separator, what magnetic separator was used
Magnetic field intensity is 800~1500GS.
The organic matter fraction that the present invention is obtained from sludge raw material includes polysaccharide and protein etc..
The present invention carries out separation of solid and liquid by filtration system or centrifugation systems.
Organic matter fraction of the invention changes its surface wettability as iron-bearing mineral and/or the inhibitor of calcium mineral,
Realize efficiently separating for useful constituent and gangue mineral.
Solid constituent water content of the invention is less than 40%, is a millimeter grade particles.Add it in retort, isolation is empty
Gas, is warmed to 700~800 DEG C, is carbonized 30~60 minutes, and then obtains the carbonized particles with particular characteristic, can be as suction
Enclosure material or fuel.
Carbonized particles particle diameter of the invention is 1~10mm, and fixed carbon mass percentage content accounts for 25%~40%, grey sub-prime
Amount degree accounts for 50%~70%.
Present invention also offers application of the organic matter fraction in mineral floating prepared by methods described, as iron content
The surfactant of mineral and/or calcium mineral is applied to mineral floating.
Preferred scheme, the organic component is 200~500g/t with respect to the addition of mineral.
Preferred scheme, it is described to include in magnetic iron ore, bloodstone, limonite, wolframite, garnet at least one containing iron ore
Kind.
Preferred scheme, calcium mineral includes at least one of calcite, fluorite, dolomite, apatite, scheelite.
Sludge organism body cell means for breaking walls key component of the invention is：High-speed stirred grinding system and high-pressure jet are followed
Loop systems, the two is complementary, complement each other.High-speed stirred grinding system principle：Using stirring-type comminution, the direct high speed of input power
Abrasive media is promoted to reach the purpose of levigate material.The built-in agitator of magnetic stirring cylinder, sets special construction on agitator
Stirring rod, stirring rod makes the irregular rolling in whole cylinder of abrasive media and material during revolution at a high speed, produces not
Regular motion, makes to produce the double action mutually clashed into and grind between abrasive media, causes material finely ground and obtains
Even scattered good result.The Main Function of magnetic liner plate is protection equipment interior lining panel, and magnetic liner plate can be inhaled on surface
Attached a part of ferromagnetism particle, forms layer protective layer, impact and abrasion in reduction grinding process to liner plate.Magnetic medium is made
With embodying both ways, a reverse side part magnetic-particle is adsorbed in magnetic liner plate surface protection liner plate, on the other hand as ultra-fine
Medium squeeze, friction or shearing cell membrane, while magnetic medium can be recycled by magnetic separation technique.High-pressure jet is circulated
System：Using Venturi tube principle, on the one hand cause slurries in comminution system by endless form improve comminution uniformity with
Efficiency；On the one hand superpower pressure is produced, the swelling fracture of cell can be caused during moment supercharging, release of pressure, on the other hand inhaled
Gas effect can form bubble cavitation during release of pressure, and the effect of bursting is played to cell membrane, while the microfine gas for being formed
Bubble can promote agglomerated particle to disperse during separating out, becoming greatly by stretching action.
Compared with the prior art, the beneficial effect that technical scheme is brought：
Technical scheme is pre-processed using biology enzyme to sludge organism cell membrane, destroys or weaken major part
Cell wall structure, carries out depth broken wall using sludge cell wall breakage device on this basis, discharges cell organic matter, then by solid
Liquid isolation technics carries out organic matter and solid particle is reclaimed, and organic component is used as mineral floating surface modifier, solid constituent warp
Drying particles are used as fuel, realize the recycling of sludge.
Technical scheme can be quick, efficient, is realized with a low cost sludge organism body cell broken wall, is extracted from sludge
Organic matter is as mineral floating surfactant and realizes the carbonization of mud component, and process is simple and convenient to operate, and meets industrialization
Production.
Sludge cell wall breakage device is employed in technical scheme, it is according to Maurice models, high-pressure homogeneous original
Reason, Hydrodynamic cavitation principle, bubble stretching dispersion principle and static eddy flow principle etc. are designed, and make full use of jet feeding system
And the high pressure cavitation force that ore pulp cycle of higher pressure cavitation system is produced in jet process, using high intensity magnetic medium grinding system
Impact and shearing force in grinding process carry out depth destruction to cell membrane, while act on preventing particle agglomeration by bubble stretching
And ultra-fine magnetic medium reinforcing broken wall efficiency, realize quick, high-efficiency wall breaking that sludge is microbial components, release cell liquid and
Cell-wall components, cell-wall breaking ratio is more than 95%.
Brief description of the drawings
【Fig. 1】It is sludge organism body cell means for breaking walls sketch of the invention；
Wherein, 1 is transmission system, and 2 is teeter column, and 3 is stirring rod, and 4 is abrasive media, and 5 is magnetic medium, and 6 is magnetic
Liner plate, 7 is sandwich-type circulating water set, and 8 is that, to stock pump, 9 is air intake, and 10 is discharging opening, and 11 is circulating pump, and 12 is sky
Gas entrance, 13 is charging aperture, and 14 is cooling water inlet, and 15 is circulation slurry inlet, and 16 is circulating line, and 17 is pan feeding pipeline,
18 is Venturi tube, and 19 is coolant outlet.
Specific embodiment
Following examples are intended to further illustrate present invention, rather than limiting the scope of the invention.
The sludge organism body cell means for breaking walls sketch used in following examples is as shown in Figure 1.Sludge organism body cell
Means for breaking walls main body includes jet feeding system, ore pulp cycle of higher pressure cavitation system, high intensity magnetic medium grinding system and cold
But system.High intensity magnetic medium grinding system mainly includes magnetic stirring cylinder and agitator, and the inwall of magnetic stirring cylinder is provided with
Magnetic liner plate 6, the magnetic field intensity of magnetic liner plate is 500~800GS.Agitator is arranged on centre in magnetic stirring cylinder, stirs
Mixing device includes teeter column 2 and three groups of stirring rod 3, and every group of stirring rod (is preferably mutually perpendicular to) by two stirring rod by certain angle
Cross arrangement, one end of teeter column extends to the magnetic stirring outside transmission system 1 with outside of cylinder and is connected.Filled out in magnetic stirring cylinder
Filled with abrasive media 4 and magnetic medium 5 (magnetic medium can be added together with sludge), abrasive media is generally steel ball, its
Loading in magnetic stirring cylinder is 30~60%, and sphere diameter is 35%, ball for the steel ball number ratio of Φ 120mm and Φ 100mm
Footpath is that the steel ball number ratio that 35%, sphere diameter is Φ 60mm and Φ 40mm is 30% for the steel ball number ratio of Φ 80mm.It is ultra-fine
Magnetic grinding aid medium is magnetic-particle material of the particle diameter less than 37 μm, such as magnetic iron ore, maghemite, magnetic iron ore, rare-earth magnetic
Material etc., its addition determines according to the amount of sludge.The magnetic stirring cylinder top is provided with discharging opening 10, and bottom is provided with charging
Mouth 13 and circulation slurry inlet 15.The jet feeding system includes pan feeding pipeline 17, and pan feeding pipeline is provided with Venturi tube 18
With to stock pump 8, pan feeding pipeline one end is connected with the charging aperture, and Venturi tube is mutually arranged between stock pump and charging aperture.It is described
Ore pulp cycle of higher pressure cavitation system includes circulating line 16, and circulating line is provided with Venturi tube and circulating pump 11, circulating line
One end is connected with circulation slurry inlet, and the other end stretches into the top in magnetic stirring cylinder, Venturi tube from magnetic stirring cylinder top
Be arranged between circulating pump and circulation slurry inlet, most carefully place's maximum pressure is not less than 30MPa to Venturi tube, and most thin place with most
Thick place ratio is not more than 1:50；The most thin place of the Venturi tube is provided with air intake 9.The magnetic stirring cylinder is outside to be provided with cooling
System, cooling system includes sandwich-type circulating water set 7, and it is outside that sandwich-type circulating water set is wrapped in magnetic stirring cylinder.
The sandwich-type circulating water set bottom is provided with cooling water inlet 14, and top is provided with coolant outlet 19.
Embodiment 1
Municipal sewage plant municipal sludge, its water content about 81% are processed using this process.Added in sludge
(complex enzyme presses matter to complex enzyme 200g/t by alpha-glucanase, 1,4 beta-glucanase, pectase, protease, seminase and glusulase
Amount ratio 10:10:2:1:1:1 composition), it is 7.5 to adjust pH with NaOH, 20-25 DEG C of temperature is maintained, with 500r/min speed
Stirring 2h, carries out sludge organism cell membrane pretreatment；Then it is the magnetic medium (magnet less than 37 μm to fineness is added in sludge
Ore deposit) 1000g/t, being transferred in the stirring-type high-speed pulverizer that steel ball filling rate is 50% carries out at a high speed that (rotating speed is about 6000r/
Min) grinding 10min, carries out depth broken wall；After the completion of broken wall magnetic medium is reclaimed with the magnetic separator that magnetic field intensity is 800GS simultaneously
Reuse, sludge carries out separation of solid and liquid through centrifuge, and supernatant liquor is by obtaining polysaccharide and egg after concentration, alcohol precipitation and dried process
White matter organic substance；Solid constituent obtains carbonized particles granularity 1-10mm into the carbide furnace 60min that temperature is 800 DEG C, fixed
Carbon content 40%, content of ashes 60% can be used as adsorbent and fuel.
Organic component is used as persimmon bamboo plantation fluorite inhibitor, persimmon bamboo plantation fluorite green ore CaF2Content 21%, calcite
Content 6.8%, garnet content 34%.Sludge organic matter suppresses as calcite and garnet during fluorite
Agent, roughing consumption is 500g/t, single-minded to smart nine consumption is respectively 100,100,50,50,50,30,30,20,10g/t, acquisition
CaF2Fluorite concentrate of the grade more than 93%, calcite content is less than 1%.
The persimmon bamboo plantation fluorite result of the test of table 1
Embodiment 2
Industrial park sludge sewage, its water content about 72% are processed using this process.To in sludge
(complex enzyme is by alpha-glucanase, 1,4 beta-glucanase, pectase, protease, seminase and glusulase to add complex enzyme 300g/t
Example 10 in mass ratio:12:1:1.5:0.8:0.8 composition), it is 7.8 to adjust pH with NaOH, maintains 20-25 DEG C of temperature, with
300r/min speed stirs 1h, carries out sludge organism cell membrane pretreatment；Then it is less than 37 μm to fineness is added in sludge
Magnetic medium (magnetic iron ore) 1000g/t, being transferred in the stirring-type high-speed pulverizer that steel ball filling rate is 30% (turn at a high speed
Speed is about 6000r/min) grinding 15min, carry out depth broken wall；Returned with the magnetic separator that magnetic field intensity is 500GS after the completion of broken wall
Magnetic medium and reuse are received, sludge carries out separation of solid and liquid through plate and frame filter press, and supernatant liquor is by concentration, alcohol precipitation and dried process
Polysaccharide and protein organic substance are obtained afterwards；Solid constituent obtains carbonized particles grain into the carbide furnace 50min that temperature is 700 DEG C
Degree 5-10mm, fixed carbon content 35%, content of ashes 65% can be used as fuel.
Organic component is used as iron ore reverse flotation inhibitor, Ma'an Mountain iron ore raw ore TFe contents 55%, quartz content
11.8%,.Using Counterfloatating desiliconization technology, lauryl amine as fluorite collecting agent, sludge organic matter as Fe containing component inhibitor,
Roughing consumption is 300g/t, and sweeping flow through a thick essence two obtains TFe grades more than 65%, the high-quality iron essence of the rate of recovery 91%
Ore deposit.
Claims (10)
1. a kind of method that recycling sludge is processed, it is characterised in that：It is mixed with magnetic medium by sludge using after cellulase treatment
Close, being transferred to carries out broken wall treatment in sludge cell wall breakage device；Broken wall treatment gained sludge by after magnetic separation recovery magnetic medium,
Carry out separation of solid and liquid；Separation of solid and liquid resulting solution component obtains organic matter fraction by concentration, alcohol precipitation, drying；Separation of solid and liquid institute
Solid constituent is obtained by charing, carbonized particles are obtained.
2. the method that recycling sludge according to claim 1 is processed, it is characterised in that：Using cellulase treatment sludge
Process is：It is 300~500r/min, temperature in stir speed (S.S.) in adding 100~500g/t ratios to add biology enzyme in sludge
For 15~30 DEG C, pH be 5~8 under conditions of, react 1~3h.
3. the method that recycling sludge according to claim 1 and 2 is processed, it is characterised in that：The biology enzyme is by α-Portugal
Dextranase, 1,4 beta-glucanase, pectase, protease, seminase, glusulase example 10 in mass ratio:8~12:1~3:0.5~
1.5:0.5~1.5:0.5~1.5 composition.
4. the method that recycling sludge according to claim 1 is processed, it is characterised in that：The magnetic medium is in sludge
Addition be 1~5kg/t；The granularity of the magnetic medium is less than 37 μm.
5. the method that the recycling sludge according to claim 1 or 4 is processed, it is characterised in that：The magnetic medium includes
At least one of magnetic iron ore, maghemite, magnetic iron ore, rareearth magnetic material.
6. the method that recycling sludge according to claim 1 is processed, it is characterised in that：The sludge cell wall breakage device
Including jet feeding system, ore pulp cycle of higher pressure cavitation system, high intensity magnetic medium grinding system and cooling system；
The high intensity magnetic medium grinding system includes magnetic stirring cylinder and agitator, and agitator is arranged in magnetic stirring cylinder
Centre, abrasive media is filled with magnetic stirring cylinder；The magnetic stirring cylinder top is provided with discharging opening, and bottom is provided with charging
Mouth and circulation slurry inlet；The jet feeding system includes pan feeding pipeline, and pan feeding pipeline is provided with Venturi tube and to stock pump,
Pan feeding pipeline one end is connected with the charging aperture；The ore pulp cycle of higher pressure cavitation system includes circulating line, on circulating line
Venturi tube and circulating pump are provided with, circulating line one end is connected with circulation slurry inlet, the other end is stretched from magnetic stirring cylinder top
Enter the top in magnetic stirring cylinder；The magnetic stirring cylinder is outside to be provided with cooling system.
7. the method that recycling sludge according to claim 6 is processed, it is characterised in that：
The magnetic stirring cylinder inwall is provided with magnetic liner plate；The magnetic field intensity of the magnetic liner plate is 500~800GS；
The agitator includes teeter column, and teeter column is provided with some groups of stirring rod of cross arrangement；
Described teeter column one end extends to and is connected with transmission system outside magnetic stirring cylinder top；
Filling rate of the abrasive media in magnetic stirring cylinder is 30~60%；The abrasive media includes that sphere diameter is Φ
The steel ball and/or Ceramic Balls of 120mm, Φ 100mm, Φ 80mm, Φ 60mm and Φ 40mm, wherein, sphere diameter is Φ 120mm and Φ
The steel ball and/or Ceramic Balls quantitative proportion of 100mm are the steel ball and/or Ceramic Balls quantity that 30%~40%, sphere diameter is Φ 80mm
Ratio is that the steel ball and/or Ceramic Balls quantitative proportion that 30%~40%, sphere diameter is Φ 60mm and Φ 40mm are 20~40%；
The cooling system includes sandwich-type circulating water set, and it is outer that sandwich-type circulating water set is wrapped in magnetic stirring cylinder
Portion；The sandwich-type circulating water set bottom is provided with cooling water inlet, and top is provided with coolant outlet；The Venturi tube is most
Thin place's maximum pressure is not less than 30MPa, and most thin place is not more than 1 with thickness ratio:50；The most thin place of the Venturi tube is provided with
Air intake.
8. the method that the recycling sludge according to claim 1,6 or 7 is processed, it is characterised in that：During broken wall treatment,
The stir speed (S.S.) of agitator is more than 5000r/min, and broken time is 5~15min.
9. application of the organic matter fraction that prepared by any one of claim 1~8 methods described in mineral floating, its feature exists
In：Mineral floating is applied to as the surfactant of iron-bearing mineral and/or calcium mineral.
10. application of the organic matter fraction according to claim 9 in mineral floating, it is characterised in that：It is described to have unit
Split-phase is 200~500g/t to the addition of mineral；It is described to include magnetic iron ore, bloodstone, limonite, wolframite, stone containing iron ore
At least one of garnet, the calcium mineral includes at least one of calcite, fluorite, dolomite, apatite, scheelite.
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| CN111675467A (en) * | 2020-06-17 | 2020-09-18 | 湖州南浔盛兴再生资源有限公司 | Pretreatment process for sludge carbonization |
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