CN108569836A - A kind of the dehydration stabilization method and device of chromium-bearing sludge - Google Patents
A kind of the dehydration stabilization method and device of chromium-bearing sludge Download PDFInfo
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- CN108569836A CN108569836A CN201810435353.2A CN201810435353A CN108569836A CN 108569836 A CN108569836 A CN 108569836A CN 201810435353 A CN201810435353 A CN 201810435353A CN 108569836 A CN108569836 A CN 108569836A
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- bearing sludge
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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
- C02F11/008—Sludge treatment by fixation or solidification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses the dehydration stabilization methods and device of a kind of chromium-bearing sludge.Specifically, obtaining pig manure charcoal after pig manure drying and pyrolysis processing；Gained pig manure charcoal fine grinding is carried out being mixed to get chromium-bearing sludge mixture after pig manure carbon powder to be added in chromium-bearing sludge after the cooling of pig manure charcoal；The water vapour generated when pig manure is dried condenses, and condensed water is added in gained chromium-bearing sludge mixture and carries out with slurry obtaining mixing mud；Mixing mud hydro-thermal process is separated by solid-liquid separation again after obtaining hydro-thermal process product；Isolated liquid is for anaerobic fermentation or is directly entered sewage disposal system processing rear discharge up to standard；Isolated solid stabilizes chromium-bearing sludge through being dried to obtain dehydration.The method of the present invention and equipment flowsheet are simple and direct, it is easy to operate, improve the dewatering of dirt containing chromium using pig manure charcoal and cures the heavy metal chromium in stabilized sludge, processing cost is low, final solid product can be filled directly or as composting substrate or prepare the raw material of charcoal or construction material, it is environmentally protective, there is good society, economy and environmental benefit.
Description
Technical field
The present invention relates to sludge treatment technique more particularly to the dehydration stabilization methods and device of a kind of chromium-bearing sludge.
Background technology
The exceeded sludge of chromium is a kind of toxic hazardous waste, is only handled with general burying method, is easily generated to environment, human body latent
It is endangering.Heavy metal chromium can not only be assembled in plant, generate toxic action to plant, influence the normal growth of plant；
Under the action of biological chain, enrichment that can also be at double finally enters human body, makes one internal protein inactivation denaturation, damages people's
Organ.Therefore, the dehydration stabilisation of the exceeded sludge of heavy metal chromium has become focal issue of people's attention.Currently, about dirt
The technology of mud processing is more, including landfill, burning, pyrolysis, building materials utilize.But no matter which kind for the treatment of technology, first have to solve
Be all dehydration with two hang-up of heavy metal stabilization.Deeply dehydrating sludge is to use certain mechanical equipment by moisture percentage in sewage sludge
It is down to 60% process below.Due to the functional group containing ionization, such as carboxyl and phosphate, therefore sludge is usually negatively charged,
And exist in the form of colloid, and high degree of dispersion is in water, dehydration is relatively difficult.Realize deeply dehydrating sludge, it can not be single
Pure rely on improves dehydration equipment operating pressure, with greater need for the dehydration property for considering how raising sludge.Have studies have shown that due to dirt
Mud has compressive characteristics, simple that high pressure is maintained to cannot achieve deep dehydration, to ensure that the efficiency of mechanical dehydration, chemistry are adjusted
Reason enhancing dehydration property just seems particularly significant.At home, the developmental research of deeply dehydrating sludge and additive has been reported.Invention
Patent Chinese patent application CN201610978602.3 disclose a kind of sludge dewatering additive and its preparation process in sludge
Application in dehydration, additive is by solid desulfurized gesso of flue gas and accounts for the sodium sulphate of solid flue gas desulfurization gypsum quality 1~5%
Composition, addition are the 10~20% of biochemical sludge solids content, are conducive to the dewatering of biochemical sludge and improve, improve sludge
Dehydrating effect.Chinese patent application CN201010580468.4 discloses a kind of domestic sludge dehydration conditioner, the conditioning
The formula of agent includes：The polyacrylamide for accounting for pending mud dry weight 0.3%~0.9%, account for pending mud dry weight 5%~
20% bamboo charcoal accounts for the quaternary ammonium salt of pending mud dry weight 0.2%~1%, accounts for the life stone of pending mud dry weight 2%~5%
Ash and account for the polyaluminium sulfate of pending mud dry weight 5%~20%, have the opsonic reaction time is short, sludge settling speed is fast,
The features such as dehydrating effect is good.CN107032580A discloses a kind of sludge dewatering agent, by filter aid, flocculant and peroxide
Composition, can significantly reduce sludge specific resistance, by mechanism filter-pressing, moisture content can be made to drop to 70% or less.Chinese patent application
CN102145974A discloses the processing method to sludge in municipal sewage comprising following steps：(1) oxidation is added in sludge
Directed agents and conditioning agent, stirring, and are passed through ozone, and after (2) are stirred to react, coagulation agent is then added, finally by sludge through press filtration,
Obtain 55% sludge below of moisture content.In the technical solution of above-mentioned patent disclosure, sludge dewatering auxiliary agent is mostly that inorganic chemistry adds
Add based on agent, additive amount is big, of high cost, using there is limitation.On the other hand, the controlling soil moist of Heavy Metals in Sludge is mainly divided
To remove and stabilizing, wherein for middle low-concentration heavy metal sludge, using stabilization process have easy to operate, cost compared with
It is low, using it is wide the features such as.Have some researchs about additive to Heavy Metals in Sludge form and stabilizing influence, portion at present
Divide additive that the form of Heavy Metals in Sludge is made to convert to residual form to be inclined to, the harm of environment can also be reduced.Such as Cao Zhonghong
Research finds that the addition of quick lime, flyash and clay is conducive to Cr and Cd during Sludge landfill and is converted to stable form
【Influence [J] China water supply and drainage of the such as Cao Zhonghong additives to Heavy Metals in dewatered sludge, 2007,23:82-86.】.
Chinese patent application CN201710610775.4 discloses preparation and the application process of a kind of heavy metal sewage sludge stabilizer, including with
Lower step：(1) preparation method：By percentage to the quality, aggregate 10-50%, precipitating reagent 5-40%, additive 1-10%；(2) it answers
Use method：Heavy metal sewage sludge adds water to stir into slurry, while adjusting slurry pH with inorganic acid or inorganic base, and step (1) is added
Stabilizer 5%-20%, be stirring evenly and then adding into curing agent, be detected after maintenance, firming body leachate reaches hazardous waste
Fill admissions criteria.Chinese patent application CN201310449462.7 discloses heavy metal sewage sludge stabilizer and its application method, should
Stabilizer is compounded by inorganic base substance, metal-chelator and organic solvent, and inorganic base substance mass content is 25%-
40%, metal-chelator mass content is 20%-30%, and organic solvent mass content is 40%-45%, after stabilizer is added
2 meters of the buried underground of mixing soil.It is steady that Chinese patent application CN201010145640.3 discloses a kind of high compressive strength
Determine sludge, which is mixed from stabilizer and kaolin are added into dewatered sludge, wherein dewatered sludge, stabilizer
It is 84~85: 11~12: 3~4 with kaolinic mass ratio, the stabilizer is by cement and anhydrous sodium sulphate in mass ratio 20: 1~2
Ratio composition；Stabilized sludge can both can carry out landfill stabilization according to actual needs, can also re-start recycling profit
With especially its characteristic with high compressive strength acts not only as the cap rock or fill material of landfill yard, can also substitute
The construction materials such as sand, clay are applied in terms of other buildings.Solidification of the above-mentioned patent for Heavy Metals in Sludge, process is complicated,
Cost is higher, is not fully suitable for chromium-bearing sludge harmlessness disposing.Therefore, a kind of low-cost high-efficiency chromium-bearing sludge dehydration is developed
Stabilized method and device is for realizing that the innoxious and recycling of heavy metal pollution sludge is of great significance.
Invention content
The purpose of the present invention is to provide a kind of chromium-bearing sludges to be dehydrated stabilization method, can effectively improve chromium-bearing sludge dehydration
Performance realizes that the solidification of heavy metal chromium is stablized, substantially reduces its negative effect risk to environment, easy to operate, technical process
Energy-saving benefit is notable, and processing cost is low, lays the foundation to realize that heavy metal sewage sludge money harmless treatment is utilized with following resourceization,
With good economic efficiency and environmental benefit.The advantage of this method is that overcoming existing chromium-bearing sludge processing dehydration efficiency
Low, heavy metals immobilization stablizes of high cost, the deficiencies of easy ting produce secondary pollution.
To achieve the above object, the present invention provides a kind of dehydration stabilization method of chromium-bearing sludge, which is characterized in that pig manure
It is dry to obtain pig manure charcoal with pyrolysis processing postcooling；By gained pig manure charcoal fine grinding be pig manure carbon powder after, be added to chromium-bearing sludge
In carry out being mixed to get chromium-bearing sludge mixture；The water vapour generated when pig manure is dried condenses, and condensed water is added
Enter into gained chromium-bearing sludge mixture to carry out with slurry to obtain mixing mud；Mixing mud hydro-thermal process obtains hydro-thermal process product
It is separated by solid-liquid separation again afterwards；Isolated liquid is for anaerobic fermentation or is directly entered sewage disposal system processing heel row up to standard
It puts；Isolated solid stabilizes chromium-bearing sludge through being dried to obtain dehydration.
Further, the pig manure is the pig manure that farm obtains through being separated by solid-liquid separation pretreatment；Preferably, the moisture content of pig manure
For 40-50%；
Optional, the chromium-bearing sludge is the centrifugal dehydration chromium-bearing sludge that Industrial Waste Water Treatments factory generates, moisture content 80-
90%, total chrome content<10000mg/kg.
Further, the temperature of the pig manure drying is 60 DEG C -100 DEG C, time 10-30min, moisture content after drying<
3%.
Further, the temperature of the pig manure pyrolysis processing is 400 DEG C -700 DEG C, and the time of pyrolysis processing is 5-30min.
In the cooling step, cooling mode can be that drum-type or bundled tube cool down indirectly, and pig manure is obtained after cooling
Charcoal material final temperature<80℃；
Optional, the grain size of the pig manure carbon powder is -200 mesh of 100 mesh.
Further, the butt quality ratio that the pig manure carbon powder is mixed with chromium-bearing sludge is 5%-10%；
Optional, the solid-liquid mass ratio of the mixing mud is 8%-15%.
Further, the temperature of the hydro-thermal process is 160-220 DEG C, pressure 1-5bar, time 30-60min；
Optional, the method that the hydro-thermal process product is separated by solid-liquid separation is plate compression, vacuum filtration, centrifugation
Or belt type filter.
Further, the pyrolysis unit furnace generate high-temperature flue gas respectively as pig manure drying process, hydro-thermal at
The indirectly heat heat source of solid phase drying process after science and engineering sequence and hydro-thermal process.
Further, solid phase drying temperature is 80 DEG C -120 DEG C after the hydro-thermal process, time 30-60min.
The present invention also provides a kind of devices of the dehydration stabilization method for chromium-bearing sludge, which is characterized in that including pig
Excrement warehouse (1), conveying device 1# (2), drying device 1# (3), conveying device 2# (4), pyrolysis installation (5), cooling device (6),
Conveying device 3# (7), fine grinding device (8), conveying device 4# (9), condensing unit (10), 11 are liquid pump 1# (11), containing chromium dirt
Mud warehouse (12), conveying device 5# (13), mixing arrangement (14), conveying device 6# (15), hydrothermal device (16), separator
(17), drying device 2# (18), liquid pump 2# (19), sewage disposal system (20), conveying device 7# (21), dehydrating and curing are stablized
Chromium-bearing sludge warehouse (22), burner (23), wind turbine 1# (24), wind turbine 2# (25), wind turbine 3# (26), exhaust gas cleaner
(27)；
Wherein, pig manure warehouse (1) outlet is connected with conveying device 1# (2) entrance；Conveying device 1# (2) is exported to be filled with dry
1# (3) entrance is set to be connected；Drying device 1# (3) material outlets are connected with conveying device 2# (4) entrance；Conveying device 2# (4) goes out
Mouth is connected with pyrolysis installation (5) entrance；Pyrolysis installation (5) material outlet is connected with cooling device (6) entrance.Cooling device (6)
Outlet is connected with conveying device 3# (7) entrance；The outlets conveying device 3# (7) are connected with fine grinding device (8) entrance；Fine grinding device
(8) outlet is connected with conveying device 4# (9) entrance；The outlets conveying device 4# (9) are connected with mixing arrangement (14) entrance；
Drying device 1# (3) steam (vapor) outlets are connected with condensing unit (10) entrance；Condensing unit (10) liquid outlet and 11
It is that liquid pump 1# (11) entrance is connected, the outlets liquid pump 1# (11) are connected with mixing arrangement (14) entrance；
Chromium-bearing sludge warehouse (12) outlet is connected with conveying device 5# (13) entrance；Conveying device 5# (13) is exported and is mixed
Device (14) entrance is connected；Mixing arrangement (14) outlet is connected with conveying device 6# (15) entrance；Conveying device 6# (15) is exported
It is connected with hydrothermal device (16) entrance；Hydrothermal device (16) outlet is connected with separator (17) entrance；Separator (17) is solid
Mutually outlet is connected with drying device 2# (18) entrance, and the outlets drying device 2# (18) are connected with conveying device 7# (21) entrance, defeated
It send the outlets device 7# (21) to stablize chromium-bearing sludge warehouse (22) with dehydrating and curing to be connected；Separator (17) liquid-phase outlet and liquid
2# (19) entrance is pumped to be connected；The outlets liquid pump 2# (19) are connected with sewage disposal system (20)；
Pyrolysis installation (5) pyrolysis gas outlet is connected with burner (23), and the heat that burner (23) generates is as warm
Solve the energy of device (5)；The flue gas that pyrolysis installation (5) generates is filled with drying device 1# (3), hydrothermal device (16) and drying respectively
It sets 2# (18) to be connected, and is pumped to exhaust gas cleaner (27) through wind turbine 1# (24), wind turbine 2# (25) and wind turbine 3# (26), realized
Qualified discharge；
Further, the pig manure warehouse (1), chromium-bearing sludge warehouse (12) and dehydrating and curing stablize chromium-bearing sludge warehouse
(22) it is common steel square feed bin or bulk tank；
It is optional, the conveying device 1# (2), conveying device 2# (4), conveying device 3# (7), conveying device 4# (9),
Conveying device 7# (21) is single axle helical conveying device, double-shaft spiral conveying device or shaftless screw conveying device；
Optional, conveying device 5# (13), conveying device 6# (15) they are slush pump；
Optional, drying device 1# (3) and drying device 2# (18) can be disc dryer, roller drier or other
Form flue gas indirectly heat drying unit；
Optional, pyrolysis installation (5) is roller heating device, and mode of heating is indirectly heat；
Optional, cooling device (6) is the air or water of roller cooler, bundled tube cooling heat exchange device or other forms
Indirect cooling device；
Optional, fine grinding device (8) is Raymond mill, horizontal roller mill, ball milling and airflow milling；
Optional, condensing unit (10) is indirect condensing device；
Optional, liquid pump 1# (11), liquid pump 2# (19) they are common water pump；
Optional, mixing arrangement (14) is the common stainless steel blending tank with mechanical stirring device；
Optional, hydrothermal device (16) is common indirect heating type hydrothermal reaction kettle；
Optional, separator (17) is plate and frame filter press, vacuum filtration machine, centrifugal separator or belt filter press；
Optional, sewage disposal system (20) is existing traditional waste water treatment process system；
Optional, burner (23) is gas-fired heating furnace；
Optional, wind turbine 1# (24), wind turbine 2# (25), wind turbine 3# (26) they are common wind turbine；
Optional, exhaust gas cleaner (27) is common Dual alkali exhaust gas purification system.
The offal treatment that livestock and poultry cultivation generates at present is a problem, and the present invention uses pig manure charcoal processing, on the one hand can be real
The harmless treatment of existing pig manure, another aspect pig manure charcoal mix hydro-thermal with sludge after to contain title raising dewatering performance of sludge and
Realize that the solidification stabilization of heavy metal chromium has the effect of.
The temperature of the pig manure drying is 60 DEG C -100 DEG C, time 10-30min, moisture content after drying<3%.Drying is extremely
Moisture content<After 3%, carrying out pyrolysis charring can be energy saving；In addition the pig manure of high-moisture percentage is directly pyrolyzed under the high temperature conditions
Charing easy tos produce gasification reaction, reduces the yield of pig manure charcoal.
- 200 mesh of 100 mesh of grain size of the pig manure carbon powder.It is more abundant with chromium-bearing sludge effect in water-heat process,
Realize that the target of chromium-bearing sludge is stablized in solidification；Experiment shows grain size>100 mesh, effect unobvious；Grain size<200 mesh, the fine grinding energy
Consumption is big, and is dehydrated stabilized effect for chromium-bearing sludge and is not obviously improved.
The butt quality ratio that the pig manure carbon powder is mixed with chromium-bearing sludge is 5%-10%；The addition ratio of pig manure carbon powder
Example<When 5%, stablizing effect unobvious are cured to chromium；The adding proportion of pig manure carbon powder>When 10%, then pig manure charcoal additive amount is big,
It is of high cost, it is uneconomical.
The solid-liquid mass ratio of the mixing mud is 8%-15%.Under conditions of this solid-liquid mass ratio, there is good water
Thermal response effect；When the solid-liquid mass ratio of mixing mud<8%, moisture content is too high, reduces water treatment efficiency, and cost is higher；It is mixed
Close the solid-liquid mass ratio of mud>15%, solid content is excessively high, steady to the solidification of the dewatering of chromium-bearing sludge and chromium after hydro-thermal reaction
It is insufficient to determine effect.
In order to realize the chromium-bearing sludge drying and processing after hydro-thermal process, further minimizing, hydro-thermal process of the present invention
Solid phase drying temperature is 80 DEG C -120 DEG C afterwards, time 30-60min.
Beneficial effects of the present invention：It is primary raw material using pig manure and chromium-bearing sludge, pig manure is pyrolyzed after obtaining pig manure charcoal
Hydro-thermal process is mixed with chromium-bearing sludge again, makes full use of the special porous structure of pig manure charcoal and abundant functional group, on the one hand, realizes weight
Absorption, precipitation, complexing of crome metal etc. make the heavy metal chromium residual form content in sludge significantly improve, and weight is stablized in fully solidification
Crome metal greatly reduces environmental risk, realizes chromium-bearing sludge harmless treatment；On the other hand, pig manure charcoal reduces mud granule
Between electrostatic repulsion and aquation, in mixing water-heat process formed infiltration, fastness lattice structure, realize sludge
The quick broken wall of cell of water-heat process, quick release capillary water, absorption water and internal water, is greatly lowered sludge solid phase viscosity,
Dehydration property is greatly improved, the permeability for filtering phase in follow-up dehydration is ensure that, to improve the dehydration of solids-liquid separation step
Efficiency, increase rate are more than 50%；Moreover, the drying efficiency of dewatered sludge is also improved significantly.It is produced in addition, pig manure is pyrolyzed
Fuel of the raw pyrolysis gas as pig manure pyrolytic process, need not be outer for the energy；The heat smoke waste heat profit that pyrogenic processes are generated
For drying process and hydro-thermal process, technical process energy-saving benefit is notable.Whole set process equipment flowsheet of the present invention is simple and direct, abundant body
Existing circular economy and clean manufacturing theory, easy to operate, operating cost is low, and final product can be filled directly, can also be used as
Composting substrate or the raw material for preparing charcoal or construction material realize chromium-bearing sludge recycling and innoxious target, green
Environmental protection has good social benefit, economic benefit and environmental benefit.
Description of the drawings
Fig. 1 is a kind of process flow chart of chromium-bearing sludge dehydration stabilization method provided in an embodiment of the present invention.
Fig. 2 is a kind of equipment connection of the device of chromium-bearing sludge dehydration stabilization method of implementation provided in an embodiment of the present invention
Figure.
Fig. 3 is the viscosity test results figure of sludge under the conditions of different disposal in the embodiment of the present invention 2.
Fig. 4 is the BCR fractions distribution figures of Heavy Metals in Sludge chromium under the conditions of different Treatment of Sludge in the embodiment of the present invention 2.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.Embodiment
In particular technique or condition person is not specified, according to technology or condition described in document in the art or according to the description of product
Book carries out.Reagents or instruments used without specified manufacturer, being can be with conventional products that are commercially available.
Fig. 1 is a kind of process flow chart of chromium-bearing sludge dehydration stabilization method provided in an embodiment of the present invention：It will cultivation
Field is separated by solid-liquid separation the pig manure of pretreatment gained, and pig manure charcoal is obtained after dry and pyrolysis processing；By pig manure charcoal carry out fine grinding, by than
Example, which is added in chromium-bearing sludge, to be mixed；The water vapour that pig manure drying generates is condensed, condensed water is added to
Pig manure charcoal with carried out in chromium-bearing sludge mixture it is with slurry；Obtained mixing mud with slurry is subjected to hydro-thermal process, is then consolidated
Liquid detaches；Isolated liquid can be used for anaerobic fermentation, can also be directly entered sewage disposal system and handle heel row up to standard
It puts；Isolated solid is that dehydration stabilizes chromium-bearing sludge, and dewatering is remarkably reinforced, and the residual form of heavy metal chromium obviously increases
Add, fully achieve dehydration and stabilize, can directly fill, can also be used as composting substrate or prepares charcoal or construction material
Raw material.
Fig. 2 is a kind of equipment connection of device for implementing chromium-bearing sludge dehydration stabilization method provided in an embodiment of the present invention
Figure.Wherein, 1 is pig manure warehouse；2 be conveying device 1#；3 be drying device 1#；4 be conveying device 2#；5 be pyrolysis installation；6 are
Cooling device；7 be conveying device 3#；8 be fine grinding device；9 be conveying device 4#；10 be condensing unit；11 be liquid pump 1#；12
It is chromium-bearing sludge warehouse；13 be conveying device 5#；14 be mixing arrangement；15 be conveying device 6#；16 be hydrothermal device；17 be point
From device；18 be drying device 2#；19 be liquid pump 2#；20 be sewage disposal system；21 be conveying device 7#；22 be that dehydration is solid
Change and stablizes chromium-bearing sludge warehouse；23 be burner；24 be wind turbine 1#；25 be wind turbine 2#；26 wind turbine 3#；27 be tail gas clean-up dress
It sets.
A kind of chromium-bearing sludge of the present invention is dehydrated stabilized device, including pig manure warehouse (1), conveying device 1# (2),
Drying device 1# (3), conveying device 2# (4), pyrolysis installation (5), cooling device (6), conveying device 3# (7), fine grinding device
(8), conveying device 4# (9), condensing unit (10), 11 are liquid pump 1# (11), chromium-bearing sludge warehouse (12), conveying device 5#
(13), mixing arrangement (14), conveying device 6# (15), hydrothermal device (16), separator (17), drying device 2# (18), liquid
Body pumps 2# (19), sewage disposal system (20), conveying device 7# (21), dehydrating and curing and stablizes chromium-bearing sludge warehouse (22), burning
Device (23), wind turbine 1# (24), wind turbine 2# (25), wind turbine 3# (26), exhaust gas cleaner (27).
Wherein, pig manure warehouse (1) outlet is connected with conveying device 1# (2) entrance；Conveying device 1# (2) is exported to be filled with dry
1# (3) entrance is set to be connected；Drying device 1# (3) material outlets are connected with conveying device 2# (4) entrance；Conveying device 2# (4) goes out
Mouth is connected with pyrolysis installation (5) entrance；Pyrolysis installation (5) material outlet is connected with cooling device (6) entrance.Cooling device (6)
Outlet is connected with conveying device 3# (7) entrance；The outlets conveying device 3# (7) are connected with fine grinding device (8) entrance；Fine grinding device
(8) outlet is connected with conveying device 4# (9) entrance；The outlets conveying device 4# (9) are connected with mixing arrangement (14) entrance.
Drying device 1# (3) steam (vapor) outlets are connected with condensing unit (10) entrance；Condensing unit (10) liquid outlet and 11
It is that liquid pump 1# (11) entrance is connected, the outlets liquid pump 1# (11) are connected with mixing arrangement (14) entrance.
Chromium-bearing sludge warehouse (12) outlet is connected with conveying device 5# (13) entrance；Conveying device 5# (13) is exported and is mixed
Device (14) entrance is connected；Mixing arrangement (14) outlet is connected with conveying device 6# (15) entrance；Conveying device 6# (15) is exported
It is connected with hydrothermal device (16) entrance；Hydrothermal device (16) outlet is connected with separator (17) entrance；Separator (17) is solid
Mutually outlet is connected with drying device 2# (18) entrance, and the outlets drying device 2# (18) are connected with conveying device 7# (21) entrance, defeated
It send the outlets device 7# (21) to stablize chromium-bearing sludge warehouse (22) with dehydrating and curing to be connected；Separator (17) liquid-phase outlet and liquid
2# (19) entrance is pumped to be connected；The outlets liquid pump 2# (19) are connected with sewage disposal system (20)；
Pyrolysis installation (5) pyrolysis gas outlet is connected with burner (23), and the heat that burner (23) generates is as warm
Solve the energy of device (5)；The flue gas that burner (23) generates respectively with drying device 1# (3), hydrothermal device (16) and dry
Device 2# (18) is connected, and is pumped to exhaust gas cleaner (27) through wind turbine 1# (24), wind turbine 2# (25) and wind turbine 3# (26), real
Existing qualified discharge.
It is pig manure warehouse (1), conveying device 1# (2), drying device 1# (3), conveying device 2# (4), pyrolysis installation (5), cold
But device (6), conveying device 3# (7), fine grinding device (8), conveying device 4# (9), condensing unit (10), 11 are liquid pump 1#
(11), chromium-bearing sludge warehouse (12), conveying device 5# (13), mixing arrangement (14), conveying device 6# (15), hydrothermal device
(16), separator (17), drying device 2# (18), liquid pump 2# (19), sewage disposal system (20), conveying device 7#
(21), dehydrating and curing stablizes chromium-bearing sludge warehouse (22), burner (23), wind turbine 1# (24), wind turbine 2# (25), wind turbine 3#
(26), exhaust gas cleaner (27).
It is general that the pig manure warehouse (1), chromium-bearing sludge warehouse (12) stablize chromium-bearing sludge warehouse (22) with dehydrating and curing
Logical steel square feed bin or bulk tank.Conveying device 1# (2), conveying device 2# (4), conveying device 3# (7), conveying device 4#
(9), conveying device 7# (21) is single axle helical conveying device, double-shaft spiral conveying device or shaftless screw conveying device.Conveying
Device 5# (13), conveying device 6# (15) are slush pump.Drying device 1# (3) and drying device 2# (18) can be that disk is dried
Machine, roller drier or other forms flue gas indirectly heat drying unit.Pyrolysis installation (5) is roller heating device, heating side
Formula is indirectly heat.Cooling device (6) is between the air or water of roller cooler, bundled tube cooling heat exchange device or other forms
Connect cooling device.Fine grinding device (8) is Raymond mill, horizontal roller mill, ball milling and airflow milling；Condensing unit (10) fills for indirect condensing
It sets.Liquid pump 1# (11), liquid pump 2# (19) are common water pump.Mixing arrangement (14) is mixed for the common stainless steel with agitating device
Close tank.Hydrothermal device (16) is common indirect heating type hydrothermal reaction kettle；Separator (17) is vacuum filtration machine, belt press filtration
Machine, centrifugal separator or plate and frame filter press；Sewage disposal system (20) is existing traditional waste water treatment process system.Burner
(23) it can be gas-fired heating furnace.Wind turbine 1# (24), wind turbine 2# (25), wind turbine 3# (26) are common wind turbine.Tail gas is net
It is common Dual alkali exhaust gas purification system that (27) are set in makeup.
It is dehydrated stabilized device in conjunction with Fig. 1-2 and chromium-bearing sludge, implements following embodiment.
Embodiment 1：
Farm is separated by solid-liquid separation to the pig manure of pretreatment gained, pig manure charcoal is obtained after dry and pyrolysis processing；By pig manure
Charcoal carries out fine grinding, is added in chromium-bearing sludge is mixed in proportion；The water vapour that pig manure drying generates is condensed, it will be cold
Water after solidifying be added to pig manure charcoal with carried out in chromium-bearing sludge mixture it is with slurry；Obtained mixing mud with slurry is carried out at hydro-thermal
Reason, is then separated by solid-liquid separation；Isolated liquid can be used for anaerobic fermentation, can also be directly entered sewage disposal system
Handle rear discharge up to standard；Isolated solid dewatering significantly improves, and the residual form of heavy metal chromium obviously increases, heavy metal
Chromium realizes that solidification is stablized, and final product after drying is to be dehydrated to stabilize sludge containing Cr, can directly fill, can also make
For composting substrate or prepare the raw material of charcoal or construction material.The pig manure is that farm obtains through being separated by solid-liquid separation pretreatment
Pig manure, moisture content 40-50%；Chromium-bearing sludge is the centrifugal dehydration chromium-bearing sludge that Industrial Waste Water Treatments factory generates, moisture content
For 80-90%, total chrome content<10000mg/kg.The pig manure drying temperature is 60 DEG C -100 DEG C, time 10-30min, is done
Moisture content after dry<3%；The dry water vapour evaporated passes through condensing recovery, can be used for mixing process water of sizing mixing.The heat
It is 400 DEG C -700 DEG C to solve temperature, residence time of material 5-30min；In the cooling recycling step, the type of cooling can be rolling
Cartridge type or bundled tube cool down indirectly, and pig manure charcoal material final temperature is obtained after cooling<80℃；The powder obtained after the pig manure charcoal fine grinding
Size controlling is -200 mesh of 100 mesh.It is described to mix process of sizing mixing, pig manure carbon powder adding proportion and chromium-bearing sludge butt quality ratio
For 5%-10%, the solid-to-liquid ratio after mixing is sized mixing is 8%-15%.The temperature of the hydro-thermal process process, hydro-thermal process is 160-
220 DEG C, pressure 1-5bar, time 30-60min；The method that hydro-thermal process product is separated by solid-liquid separation is plate compression, very
Sky suction filtration, centrifugation or belt type filter.The high-temperature flue gas that pyrolysis installation heating furnace generates is respectively as pig manure drying process, water
The indirectly heat heat source of solid phase drying process after heat treatment procedure and hydro-thermal process fully realizes energy cascade utilization.At hydro-thermal
Solid phase drying temperature is 80 DEG C -120 DEG C after reason, time 30-60min.
It is dehydrated the TCLP (toxicity that the chromium-bearing sludge after steadyization uses Environmental Protection Agency USA (EPA) to formulate
Characteristicleaching procedure) toxicity lixiviation process measure heavy metal Leaching, evaluate new process
Environmental safety, the results are shown in Table 1.
Heavy metal chromium TCLP method leaching concentration tables before and after 1 Treatment of Sludge of table
As it can be seen from table 1 the TCLP of the Cr of Heavy Metals in Sludge containing Cr before processing leaches content considerably beyond standard
Defined limit value, but after the method for the present invention is dehydrated stabilization processes, the leaching content realization of heavy metal Cr significantly reduces, low
In US-EPA standards, no environmental risk realizes harmless treatment；On the other hand, dehydration stabilizes the Cr of sludge heavy-metal containing Cr
TCLP leach limit value of the content also below hazardous waste judging standard GB5085.3-2007, treated final product can be with
It is directly filled as general waste, can also be used as composting substrate or prepares the raw material of charcoal or construction material.
Embodiment 2
Farm is separated by solid-liquid separation to the pig manure of pretreatment gained, pig manure charcoal is obtained after dry and pyrolysis processing；By pig manure
Charcoal carries out fine grinding, is added in chromium-bearing sludge is mixed in proportion；The water vapour that pig manure drying generates is condensed, it will be cold
Water after solidifying be added to pig manure charcoal with carried out in chromium-bearing sludge mixture it is with slurry；Obtained mixing mud with slurry is carried out at hydro-thermal
Reason, is then separated by solid-liquid separation；Isolated liquid can be used for anaerobic fermentation, can also be directly entered sewage disposal system
Handle rear discharge up to standard；Isolated solid, dehydration property enhancing, the residual form of heavy metal chromium obviously increase, fully achieve and contain
Chromium sludge dewatering stabilizes.Final product after drying is to be dehydrated stabilisation sludge containing Cr can directly fill, can also
As composting substrate or prepare the raw material of charcoal or construction material.The pig manure is that farm pre-processes through being separated by solid-liquid separation
The pig manure arrived, moisture content 45%；Chromium-bearing sludge is the centrifugal dehydration chromium-bearing sludge that Industrial Waste Water Treatments factory generates, and moisture content is
85%, chromium content 6350mgkg-1.The pig manure drying temperature is 100 DEG C, time 30min, moisture content after drying<
3%；The dry water vapour evaporated passes through condensing recovery, for mixing process water of sizing mixing.The pyrolysis temperature is 600
DEG C, residence time of material 25min；In the cooling recycling step, the type of cooling can be that drum-type or bundled tube are indirectly cold
But, pig manure charcoal material final temperature is obtained after cooling<80℃；The powder diameter control obtained after the pig manure charcoal fine grinding is 100 mesh-
200 mesh.Described to mix process of sizing mixing, pig manure carbon powder adding proportion is 10% with chromium-bearing sludge butt quality ratio, and mixing is sized mixing
Solid-to-liquid ratio afterwards is 8%.The hydro-thermal process process, the temperature of hydro-thermal process are respectively 160 DEG C, 180 DEG C, 200 DEG C, 220 DEG C,
Pressure is 4.0bar, time 30min, and being respectively designated as sludge according to different disposal scheme adds charcoal160, sludge add charcoal180, sludge
Add charcoal200With sludge plus charcoal220, in order to be compared with raw sewage；The method that hydro-thermal process product is separated by solid-liquid separation be from
The heart detaches, and the solid phase to isolating carries out sewage sludge viscosity test, to characterize dewatering performance of sludge.
The viscosity test results of sludge are as shown in Figure 3 under the conditions of different disposal.The result shows that compared with raw sewage, through with
After pig manure carbon powder mixes hydro-thermal process, significantly downward trend is presented significantly as temperature increases sewage sludge viscosity；Due to
Sewage sludge viscosity is negative correlativing relation with dewatering, therefore chromium-bearing sludge mixes hydro-thermal with pig manure charcoal, keeps dewatering performance of sludge big
Amplitude improves.
Using the European standard test analysis committee (The Community Bureau of Reference, Now the
Standards, Measurements and Testing Programme) support BCR continuous extractions, Heavy Metals in Sludge
The fractions distribution of element be divided into weak acid state (exchangeable species and carbonate combine state), can reduction-state (iron and manganese oxides combine
State), oxidable state (organic matter and sulfide reference state) and four kinds of components of residual form.Weak acid extractable and can reduction-state a huge sum of money
Category is easy to be absorbed by plants, and negative impact is brought to ecological environment；Oxidable state is metal ion and organic matter and vulcanization
The form that object is combined is the insoluble matter that ligand combines or sulphion is generated with metallic using organic matter active group,
When organic matter reacts under oxidative conditions, part metals will be released.Include that can mainly metal be made to consolidate in residue solid
Change the solid in crystal structure, so the heavy metal of residual form is seen as most stable of metal form；When Gold Samples belong to residual
When slag state content increases, shows that it can more steadily exist in the environment, do not easily cause environmental risk.BCR test knots
Fruit is as shown in Figure 4.
Fig. 4 the result shows that, compared with raw sewage, chromium-bearing sludge passes through and with pig manure charcoal mixes hydro-thermal, makes Heavy Metals in Sludge chromium
It is converted from labile state to residual form, residual form content significantly improves, while labile state is substantially reduced, and realizes heavy metal chromium
Solidification and stabilisation.
Chromium-bearing sludge of the present invention is dehydrated stabilized device and chromium-bearing sludge dewatering can be improved, while realizing a huge sum of money
The solidification for belonging to chromium is stablized, its negative effect risk to environment is substantially reduced, and easy to operate, technical process energy-saving benefit is notable,
Operating cost is low, can be used for the exceeded sewage sludge harmlessness processing of heavy metal chromium, and the TCLP of heavy metal chromium leaches content and can be controlled in danger
Within the limit value of dangerous waste judging standard GB5085.3-2007, final product can be used as general offal treatment, this for subsequently into
One step recycling lays the foundation, with good economic efficiency and environmental benefit.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case of can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (10)
1. a kind of dehydration stabilization method of chromium-bearing sludge, which is characterized in that pig manure is dried obtains pig with pyrolysis processing postcooling
Excrement charcoal；Gained pig manure charcoal fine grinding be mixed to get chromium-bearing sludge mixing after pig manure carbon powder, to be added in chromium-bearing sludge
Object；The water vapour generated when pig manure is dried condenses, by condensed water be added to gained chromium-bearing sludge mixture in into
Row is with slurry to obtain mixing mud；Mixing mud hydro-thermal process is separated by solid-liquid separation again after obtaining hydro-thermal process product；It is isolated
Liquid for anaerobic fermentation or be directly entered sewage disposal system processing it is up to standard after discharge；Isolated solid is through dry
Chromium-bearing sludge is stabilized to dehydration.
2. the dehydration stabilization method of a kind of chromium-bearing sludge according to claim 1, which is characterized in that the pig manure is cultivation
The pig manure that field is obtained through being separated by solid-liquid separation pretreatment；Preferably, the moisture content of pig manure is 40-50%；
Optional, the chromium-bearing sludge is the centrifugal dehydration chromium-bearing sludge that Industrial Waste Water Treatments factory generates, moisture content 80-
90%, total chrome content<10000mg/kg.
3. the dehydration stabilization method of a kind of chromium-bearing sludge according to claim 1, which is characterized in that the pig manure drying
Temperature is 60 DEG C -100 DEG C, time 10-30min, moisture content after drying<3%.
4. the dehydration stabilization method of a kind of chromium-bearing sludge according to claim 1, which is characterized in that at the pig manure pyrolysis
The temperature of reason is 400 DEG C -700 DEG C, and the time of pyrolysis processing is 5-30min.
In the cooling step, cooling mode can be that drum-type or bundled tube cool down indirectly, and pig manure charcoal object is obtained after cooling
Expect final temperature<80℃；
Optional, the grain size of the pig manure carbon powder is -200 mesh of 100 mesh.
5. the dehydration stabilization method of a kind of chromium-bearing sludge according to claim 1, which is characterized in that the pig manure carbon powder
The butt quality ratio mixed with chromium-bearing sludge is 5%-10%；
Optional, the solid-liquid mass ratio of the mixing mud is 8%-15%.
6. the dehydration stabilization method of a kind of chromium-bearing sludge according to claim 1, which is characterized in that the hydro-thermal process
Temperature is 160-220 DEG C, pressure 1-5bar, time 30-60min；
Optional, the method that the hydro-thermal process product is separated by solid-liquid separation is plate compression, vacuum filtration, centrifugation or band
Formula filters.
7. the dehydration stabilization method of a kind of chromium-bearing sludge according to claim 1, which is characterized in that the device of the pyrolysis
The high-temperature flue gas that heating furnace generates is respectively as solid phase drying process after pig manure drying process, hydro-thermal process process and hydro-thermal process
Indirectly heat heat source.
8. the dehydration stabilization method of a kind of chromium-bearing sludge according to claim 1, which is characterized in that after the hydro-thermal process
Solid phase drying temperature is 80 DEG C -120 DEG C, time 30-60min.
9. a kind of device of dehydration stabilization method for chromium-bearing sludge, which is characterized in that including pig manure warehouse (1), conveying
Device 1# (2), drying device 1# (3), conveying device 2# (4), pyrolysis installation (5), cooling device (6), conveying device 3# (7),
Fine grinding device (8), conveying device 4# (9), condensing unit (10), 11 are liquid pump 1# (11), chromium-bearing sludge warehouse (12), conveying
Device 5# (13), mixing arrangement (14), conveying device 6# (15), hydrothermal device (16), separator (17), drying device 2#
(18), liquid pump 2# (19), sewage disposal system (20), conveying device 7# (21), dehydrating and curing stablize chromium-bearing sludge warehouse
(22), burner (23), wind turbine 1# (24), wind turbine 2# (25), wind turbine 3# (26), exhaust gas cleaner (27)；
Wherein, pig manure warehouse (1) outlet is connected with conveying device 1# (2) entrance；Conveying device 1# (2) is exported and drying device 1#
(3) entrance is connected；Drying device 1# (3) material outlets are connected with conveying device 2# (4) entrance；Conveying device 2# (4) export with
Pyrolysis installation (5) entrance is connected；Pyrolysis installation (5) material outlet is connected with cooling device (6) entrance.Cooling device (6) exports
It is connected with conveying device 3# (7) entrance；The outlets conveying device 3# (7) are connected with fine grinding device (8) entrance；Fine grinding device (8) goes out
Mouth is connected with conveying device 4# (9) entrance；The outlets conveying device 4# (9) are connected with mixing arrangement (14) entrance；
Drying device 1# (3) steam (vapor) outlets are connected with condensing unit (10) entrance；Condensing unit (10) liquid outlet and 11 is liquid
Body pumps 1# (11) entrance and is connected, and the outlets liquid pump 1# (11) are connected with mixing arrangement (14) entrance；
Chromium-bearing sludge warehouse (12) outlet is connected with conveying device 5# (13) entrance；Conveying device 5# (13) is exported and mixing arrangement
(14) entrance is connected；Mixing arrangement (14) outlet is connected with conveying device 6# (15) entrance；Conveying device 6# (15) is exported and water
Thermal (16) entrance is connected；Hydrothermal device (16) outlet is connected with separator (17) entrance；Separator (17) solid phase goes out
Mouth is connected with drying device 2# (18) entrance, and the outlets drying device 2# (18) are connected with conveying device 7# (21) entrance, conveying dress
The outlets 7# (21) are set with dehydrating and curing stabilization chromium-bearing sludge warehouse (22) to be connected；Separator (17) liquid-phase outlet and liquid pump 2#
(19) entrance is connected；The outlets liquid pump 2# (19) are connected with sewage disposal system (20)；
Pyrolysis installation (5) pyrolysis gas outlet is connected with burner (23), and the heat that burner (23) generates is filled as pyrolysis
Set the energy of (5)；Pyrolysis installation (5) generate flue gas respectively with drying device 1# (3), hydrothermal device (16) and drying device 2#
(18) it is connected, and is pumped to exhaust gas cleaner (27) through wind turbine 1# (24), wind turbine 2# (25) and wind turbine 3# (26), is realized up to standard
Discharge.
10. the device described in claim 9 for the dehydration stabilization method of chromium-bearing sludge, which is characterized in that the pig manure
It is common steel square feed bin or circle that warehouse (1), chromium-bearing sludge warehouse (12) stablize chromium-bearing sludge warehouse (22) with dehydrating and curing
Shape feed bin；
It is optional, the conveying device 1# (2), conveying device 2# (4), conveying device 3# (7), conveying device 4# (9), conveying
Device 7# (21) is single axle helical conveying device, double-shaft spiral conveying device or shaftless screw conveying device；
Optional, conveying device 5# (13), conveying device 6# (15) they are slush pump；
Optional, drying device 1# (3) and drying device 2# (18) can be disc dryer, roller drier or other forms
Flue gas indirectly heat drying unit；
Optional, pyrolysis installation (5) is roller heating device, and mode of heating is indirectly heat；
Optional, cooling device (6) is that roller cooler, the air of bundled tube cooling heat exchange device or other forms or water are indirect
Cooling device；
Optional, fine grinding device (8) is Raymond mill, horizontal roller mill, ball milling and airflow milling；
Optional, condensing unit (10) is indirect condensing device；
Optional, liquid pump 1# (11), liquid pump 2# (19) they are common water pump；
Optional, mixing arrangement (14) is the common stainless steel blending tank with mechanical stirring device；
Optional, hydrothermal device (16) is common indirect heating type hydrothermal reaction kettle；
Optional, separator (17) is plate and frame filter press, vacuum filtration machine, centrifugal separator or belt filter press；
Optional, sewage disposal system (20) is existing traditional waste water treatment process system；
Optional, burner (23) is gas-fired heating furnace；
Optional, wind turbine 1# (24), wind turbine 2# (25), wind turbine 3# (26) they are common wind turbine；
Optional, exhaust gas cleaner (27) is common Dual alkali exhaust gas purification system.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621897A (en) * | 2019-01-03 | 2019-04-16 | 中国科学院城市环境研究所 | The preparation method and its device and purposes of a kind of magnetic bio Carbon Materials |
| CN109970064A (en) * | 2019-02-19 | 2019-07-05 | 同济大学 | A kind of urban mud anaerobic digestion biogas residue reduction prepares the device of silicon carbide |
| CN110092559A (en) * | 2019-04-10 | 2019-08-06 | 浙江清风源环保科技有限公司 | A kind of processing method of sludge containing heavy metal |
| CN111735062A (en) * | 2020-06-29 | 2020-10-02 | 中国科学院过程工程研究所 | Low-pollution-emission sludge resource incineration method and system device |
| CN114249514A (en) * | 2021-12-06 | 2022-03-29 | 中国科学院城市环境研究所 | Harmless resource utilization method and device for tanning chromium-containing sludge |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396815A (en) * | 2013-08-05 | 2013-11-20 | 中国科学院城市环境研究所 | Method for preparing carbon materials by use of sludge |
| CN105217910A (en) * | 2015-11-06 | 2016-01-06 | 青岛智科生态环境技术有限公司 | A kind of recycling handles method for dirty mire |
| CN105418171A (en) * | 2016-01-12 | 2016-03-23 | 中国科学院城市环境研究所 | Method and device for preparing phosphorus-rich biofertilizer |
| CN105776796A (en) * | 2016-04-11 | 2016-07-20 | 浙江大学 | Method of reducing heavy metal bio-availability through pig manure pyrolysis and biochar application of pig manure |
| CN105855275A (en) * | 2016-06-22 | 2016-08-17 | 中国科学院城市环境研究所 | Method for processing sludge and kitchen wastes |
| CN106424077A (en) * | 2016-09-12 | 2017-02-22 | 中国科学院城市环境研究所 | Method for treating fly sh by sludge |
| CN106746468A (en) * | 2017-01-25 | 2017-05-31 | 云南水务投资股份有限公司 | A kind of sludge treating system and handling process |
| CN106732363A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal of the feces of livestock and poultry that adulterates |
| CN206244619U (en) * | 2016-10-26 | 2017-06-13 | 深圳先进技术研究院 | A kind of sludge treating system based on hydrothermal carbonization |
| WO2017102814A1 (en) * | 2015-12-15 | 2017-06-22 | Terranova Energy Gmbh | Method for the digestion and hydrothermal carbonization of sewage sludge |
| JP2017127797A (en) * | 2016-01-18 | 2017-07-27 | メタウォーター株式会社 | Sludge incineration system |
| CN107162373A (en) * | 2017-06-21 | 2017-09-15 | 福建禹环境科技有限公司 | A kind of pig manure method of comprehensive utilization based on carbonization pyrolytic technique |
-
2018
- 2018-05-09 CN CN201810435353.2A patent/CN108569836B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396815A (en) * | 2013-08-05 | 2013-11-20 | 中国科学院城市环境研究所 | Method for preparing carbon materials by use of sludge |
| CN105217910A (en) * | 2015-11-06 | 2016-01-06 | 青岛智科生态环境技术有限公司 | A kind of recycling handles method for dirty mire |
| WO2017102814A1 (en) * | 2015-12-15 | 2017-06-22 | Terranova Energy Gmbh | Method for the digestion and hydrothermal carbonization of sewage sludge |
| CN105418171A (en) * | 2016-01-12 | 2016-03-23 | 中国科学院城市环境研究所 | Method and device for preparing phosphorus-rich biofertilizer |
| JP2017127797A (en) * | 2016-01-18 | 2017-07-27 | メタウォーター株式会社 | Sludge incineration system |
| CN105776796A (en) * | 2016-04-11 | 2016-07-20 | 浙江大学 | Method of reducing heavy metal bio-availability through pig manure pyrolysis and biochar application of pig manure |
| CN105855275A (en) * | 2016-06-22 | 2016-08-17 | 中国科学院城市环境研究所 | Method for processing sludge and kitchen wastes |
| CN106424077A (en) * | 2016-09-12 | 2017-02-22 | 中国科学院城市环境研究所 | Method for treating fly sh by sludge |
| CN206244619U (en) * | 2016-10-26 | 2017-06-13 | 深圳先进技术研究院 | A kind of sludge treating system based on hydrothermal carbonization |
| CN106732363A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal of the feces of livestock and poultry that adulterates |
| CN106746468A (en) * | 2017-01-25 | 2017-05-31 | 云南水务投资股份有限公司 | A kind of sludge treating system and handling process |
| CN107162373A (en) * | 2017-06-21 | 2017-09-15 | 福建禹环境科技有限公司 | A kind of pig manure method of comprehensive utilization based on carbonization pyrolytic technique |
Non-Patent Citations (3)
| Title |
|---|
| YUNBO ZHAI等: "Influence of sewage sludge-based activated carbon and temperature on the liquefaction of sewage sludge: Yield and composition of bio-oil, immobilization and risk assessment of heavy metals", 《BIORESOURCE TECHNOLOGY》 * |
| 王兴栋等: "水热处理时间对污泥中氮磷钾及重金属迁移的影响", 《环境科学》 * |
| 陈昆柏等: "《农业固体废物处理与处置》", 30 November 2016, 河南科学技术出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621897A (en) * | 2019-01-03 | 2019-04-16 | 中国科学院城市环境研究所 | The preparation method and its device and purposes of a kind of magnetic bio Carbon Materials |
| WO2020140779A1 (en) * | 2019-01-03 | 2020-07-09 | 中国科学院城市环境研究所 | Preparation method for magnetic biochar material, device therefor and use thereof |
| CN109970064A (en) * | 2019-02-19 | 2019-07-05 | 同济大学 | A kind of urban mud anaerobic digestion biogas residue reduction prepares the device of silicon carbide |
| CN110092559A (en) * | 2019-04-10 | 2019-08-06 | 浙江清风源环保科技有限公司 | A kind of processing method of sludge containing heavy metal |
| CN111735062A (en) * | 2020-06-29 | 2020-10-02 | 中国科学院过程工程研究所 | Low-pollution-emission sludge resource incineration method and system device |
| CN111735062B (en) * | 2020-06-29 | 2021-11-16 | 中国科学院过程工程研究所 | Low-pollution-emission sludge resource incineration method and system device |
| CN114249514A (en) * | 2021-12-06 | 2022-03-29 | 中国科学院城市环境研究所 | Harmless resource utilization method and device for tanning chromium-containing sludge |
| CN114249514B (en) * | 2021-12-06 | 2024-01-23 | 中国科学院城市环境研究所 | Harmless recycling method and device for tanning chromium-containing sludge |
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