CN105948801A - Method for preparing porous adsorption material by adopting dredged sediment - Google Patents

Method for preparing porous adsorption material by adopting dredged sediment Download PDF

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Publication number
CN105948801A
CN105948801A CN201610288515.5A CN201610288515A CN105948801A CN 105948801 A CN105948801 A CN 105948801A CN 201610288515 A CN201610288515 A CN 201610288515A CN 105948801 A CN105948801 A CN 105948801A
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China
Prior art keywords
bed mud
sediment
foaming agent
adsorbing material
water
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CN201610288515.5A
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Inventor
陶红
顾竹珺
林童
杨克明
贾玉宝
施柳
李飞鹏
毛凌晨
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Priority to CN201610288515.5A priority Critical patent/CN105948801A/en
Publication of CN105948801A publication Critical patent/CN105948801A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Abstract

The invention provides a method for preparing porous adsorption material by adopting dredged sediment. The method comprises the following steps: collecting river dredged sediment, naturally ventilating the river dredged sediment, pouring off overlying water, and weathering and airing the dredged sediment under natural conditions to make the water content be smaller than 10%; sequentially crushing and grinding the aired and agglomerated sediment through a crusher and a ball mill, sieving the ground sediment, and collecting the sieved sediment for later use; mixing the sediment with P.O 42.5 cement according to a mass ratio of 4-7:3-6, mechanically stirring the sediment and the P.O 42.5 cement under a room temperature condition, adding a foaming agent after the sediment and the P.O 42.5 cement are uniformly mixed, and continuously mechanically stirring the sediment, the P.O 42.5 cement and the foaming agent, wherein the mass of the foaming agent is 0.5-3% of the mass of solid; and casting the obtained uniformly mixed mixture to a standard die, mechanically oscillating the standard die for 3-5min, demolding 20-30h later, and carrying out continuous wet curing for 7-90d to prepare the non-sintered porous adsorption material. The porous adsorption material has the advantages of good mechanical strength to resist water scouring, high porosity, and good adsorption effect on heavy metals and other pollutants in water.

Description

A kind of method using Dredged bed mud to prepare porous adsorbing material
Technical field
The invention belongs to materialogy field, relate to a kind of porous adsorbing material, a kind of employing is dredged specifically Bed mud prepares the method for porous adsorbing material.
Background technology
Pollute due to the external source of city river and persistently input and run up to a certain degree, beyond the original water ring in river course After the bearing capacity in border and self-purification capacity, in causing river course, ecosystem equilibrium system destroys, and loses external sewage Dissolve and detergent power.So that a large amount of material buildup such as organic pollution, eutrophication macromole in river course, Form the black smelly mud that oxidation-reduction potential is extremely low.River course is because of body eutrophication and the bed-silt internal moment The anaerobic reaction carried out, causes bank to be stinked to high heaven.The training of channel is as city river water environment improvement One of major measure, its method has a lot, specifically includes that the dredging of underwater dredging, dry river, relies on hydraulic dredging process And use the means dredgings such as explosion.From the point of view of dredging technology present situation, engineering dredging technology, environmental protection it is divided into again to dredge Dredge technology and ecological dredging technology etc..Wherein, the river bottom mud ecology for the purpose of reducing endogenous pollution load is dredged Dredge technology it is considered to be control one of river course obvious project slash of endogenous pollution effect.Japan, the U.S., The country such as Sweden has carried out local or large-scale bottom mud in lake dredging work to Some Lakes.Environmental dredging produces Bed mud, be normally used as solid waste be deposited in storage mud field in, but this method of disposal also bring various respectively The problem of sample: 1. stack merely and do not take other control measure, on the one hand can take a large amount of soil, the opposing party Face can produce again secondary pollution due to rainwash, and wherein beneficiating ingredient is (such as N, P and a certain amount of Metallic element) can not be fully used, cause the waste of resource.
At present, major part bed mud resource mode is bed mud to be prepared as building materials, such as: China Patent No. 201110035907.8, proprietary term: the baked light-weight environmental-friendly bricks of a kind of river bottom mud production and manufacture method thereof； China Patent No. 201210322843.4, proprietary term: the preparation method of a kind of bottom mud brick；China Patent No. 201310258221.4, proprietary term: a kind of sludge of sewage treatment plant fired brick and preparation method thereof；China is specially Profit number 201410326354.5, proprietary term: the method for the non-sintered brickmaking of a kind of Dredged bed mud.These methods Resource mode single, range of application is less.
Summary of the invention
For above-mentioned technical problem of the prior art, the invention provides a kind of employing Dredged bed mud and prepare porous The method of adsorbing material, described this employing Dredged bed mud is prepared the method for porous adsorbing material and to be solved existing In technology, the Land use systems for Dredged bed mud is single, the technical problem that range of application is little.
The invention provides a kind of method using Dredged bed mud to prepare porous adsorbing material, comprise the steps:
1) gather lake dredging bottom-mud, after gravity-flow ventilation, stand, remove overlying water, by bed mud at nature Under the conditions of air slaking dry so that it is moisture content < 10%；
2) bed mud lumpd after air-drying sequentially passes through pulverizer and ball mill crushing grinding, crosses 100-200 Mesh sieve, collects standby；
3) bed mud, P.O 42.5 cement are mixed according to mass ratio 4-7:3-6, then in room temperature condition Lower mechanical agitation, adds foaming agent after mixing, continue mechanical agitation, described foaming agent Quality is the 0.5%-3% of bed mud cement quality sum；
4) water after mix homogeneously and cast from Standard Module, mechanical vibration 3-5 minute, de-after 20～30 hours Mould, in humidity > 95%, temperature is continuous wet type maintenance 7-90 under the conditions of being controlled in 19.5-20.5 DEG C My god, prepare non-sintered porous adsorbing material.
Further, continue stirring after the addition foaming agent described in step (3) and refer to that agitator first stirs bed mud After cement half a minute, add foaming agent, then proceed to stirring.
Further, the mechanical agitation that the mechanical agitation described in step (3) is described be mechanical agitation be stirring Device first stirs 25～45 seconds with the speed of 125-135r/min, again with 125-135r/min after addition foaming agent Speed stir 2～3 minutes, then stir 50～80 seconds with the speed of 57-67r/min.
Further, in step 3) in, after adding foaming agent, the water-solid ratio in material is at ambient temperature Between 0.3-0.6.
Further, in step 4) in, described mechanical vibration are to refer to be placed on vibration table mould machinery Being vibrated to fill up in Standard Module, amplitude is 0-5mm.
Further, the unconfined compressive strength of described unburned porous adsorbing material is more than or equal to 3MPa.
Further, described Dredged bed mud is the sediments in contaminated river course, and moisture content is 50-65%, pH Between 6.95-7.85, main component is SiO2, Al2O3、Fe2O3、CaO。
Further, in step (3), described foaming agent is concrete foamer, the most commercially available LW2 Foaming agent, T100 foaming agent.
Further, described non-sintered porous adsorbing material refers to that temperature is substantially at room in preparation process Temperature condition, not heating or calcination condition.
The present invention is to utilize non-sintered technology, saves energy consumption, it is to avoid cause the non-sintered porous of secondary atmospheric pollution The preparation method of adsorbing material, utilizes P.O 42.5 cement, foaming agent to be prepared from, and material is easy to get, originates Extensively, low price.Not only energy-conserving and environment-protective and method are simple, meet that Leaching of Heavy Metals is low, porosity is high, The requirement such as excellent adsorption, easy large-scale production, can have good suction as adsorbing material to heavy metal in water Attached effect.Can be used for while Dredged bed mud is carried out recycling removing the pollutant in water body.The present invention Technology is simple, with low cost, saves energy consumption, it is to avoid cause secondary atmospheric pollution；Low heavy metal leaches, and possesses Can the mechanical strength that washes away of water resistant, porosity is high, has good absorption effect to pollutant such as the heavy metals in water Really.
Dredged bed mud is prepared as porous adsorbing material by non-sintered technology by the present invention, has opened up bed mud resource Mode.The present invention prepares non-sintered porous adsorbing material, without heating or calcination condition in preparation process.Maintenance 28 days, unconfined compressive strength reached 3MPa；The density rating of non-sintered porous adsorbing material, comprcssive strength Etc. wanting of being satisfied by GBT17431.1-2010 " light-weight aggregate and test method-part 1 thereof: light-weight aggregate " Ask.The adsorption efficiency of Heavy Metals in Waters can be reached more than 90%.
The present invention has advantage and a beneficial effect:
(1) prepare raw materials used simple and easy to get, cheap, environmentally friendly.Heavy metal pollution Dredged bed mud, water Mud and concrete foamer, will not be to environmental danger or by-products in processing technology as primary raw material. Use non-sintered technique, there is energy-conservation advantage, reduce the risk of secondary pollution simultaneously.
(2) Leaching of Heavy Metals concentration is low: the hydrolysis hydration reaction of cement produces gel compound parcel polluted bed mud Granule, the high ph-values of cement promotes heavy metal to generate precipitation, a large amount of calcium contained in hydrolysis product of cement simultaneously Ion can exchange with heavy metal ion generation ion, is substantially reduced the leaching of heavy metal；
(3) porosity is high: foaming agent produces foam in whipping process, is formed during mixing in mud Certain hole, meanwhile, in operation, being mixed in mud of air can retain certain hole；
(4) mechanical strength is good: after cement solidification, although increases hole, but still can reach preferable nothing Confined compressive strength, meets water and processes the strength criterion of adsorbing material；
(5) material for water treatment: the detention of porous reinforcement material and purification, bed mud is made with cement mixing Cement-based material also has certain absorbability, stronger to the absorbability of pollutant；
(6) Dredged bed mud recycling: the problem efficiently solving bed mud resource, has also widened at the end simultaneously The range of application of clay standby material, belongs to Novel environment-friendlymaterial material；
(7) technique is simple, easy volume production: preparation condition is room temperature, it is not necessary to heating and pressurized equipment, technological process letter Single, easily realize production line automation and produce.
Detailed description of the invention
Below in conjunction with certain embodiments, the present invention is described in detail, but embodiment is not limited to the present invention.
Embodiment 1
Gather after river bottom mud, after standing after measuring its moisture content, going the removal of impurity, air-dry and be exposed to the sun.When bed mud contains After water rate is down to less than 10%, utilize pulverizer and ball mill to carry out crushing, after ball milling, use 100-200 mesh Sieve carry out screening standby.
Utilize cement blender the most quickly under room temperature condition bed mud, P.O 42.5 cement proportionally 7:3 Stirring half a minute, after adding the T100 foaming agent of 0.5%, more quickly 2 points of halfs of stirring, stir the most at a slow speed Mix 1 minute, and strictly control water-solid ratio is 0.3 under room temperature condition.Water after mix homogeneously and cast from Standard Module In, mechanical vibration 1-3 minute, prevent from being compacted in a mold mud, the demoulding after 24 hours, be positioned over wet Degree > 95%, temperature is continuous wet type maintenance 7-90 days under the conditions of being controlled in 19.5-20.5 DEG C, prepare unburned porous Adsorbing material.The specification of non-sintered porous absorption can be controlled between diameter 0.5-5cm.
According to experiment: the specific surface area of bed mud porous adsorbing material is about 20m2/ g, average density is 372.47kg/m3, water absorption rate is 75.93%；The density rating of non-sintered porous adsorbing material, comprcssive strength etc. It is satisfied by the requirement in GBT17431.1-2010 " light-weight aggregate and test method-part 1 thereof: light-weight aggregate ".
According to HJ/T 299-2007 " solid waste Leaching leaching method sulfonitric method " and and HJ/T 300-2007 " solid waste Leaching leaching method hac buffer method " carries out weight to porous adsorbing material Metal leaching experiment, result is as shown in table 1.
Table 1 non-sintered porous adsorbing material leachability and concerned countries standard
Note:: represent that inspection does not measures；
Porous adsorbing material prepared by the present invention uses two kinds of leachability detection methods to obtain a result and is satisfied by GB 5085.3-2007 " hazardous waste judging standard leaching characteristic identification ", GB16889-2008 " fill out by house refuse Bury an Environmental capacity standard " and GB 8978-1996 " integrated wastewater discharge standard " primary standard.Prove material Material Leaching of Heavy Metals is extremely low, in the ordinary course of things, natural environment will not be produced harm.
Non-sintered porous adsorbing material prepared by the present invention is in water processes, to absorbability phosphatic in water Relatively strong, clearance reaches more than 95%；The clearance of total phosphorus in water is reached more than 70%；To nitrate nitrogen in water Clearance reach more than 80%；Also a certain degree of absorption, clearance is had to reach the heavy metals such as Cd in sewage To more than 90%.
The table 2 non-sintered porous adsorbing material removal effect to pollutant
Pollutant Influent concentration (mg/L) Aqueous concentration (mg/L) Clearance %
Phosphate 0.268 0.008 97.01%
Total phosphorus 0.17 0.04 76.47%
Nitrate nitrogen 0.99 0.14 85.9%
Total cadmium 50 2.5╳10-6 99.4%
Its result can meet GB3838-2002 " water environment quality standard ", GBT18921-2002 " city simultaneously City's reuse of wastewater water for scenic environment use water quality " II-III class standards of water quality.
Embodiment 2
After bed mud moisture content is down to below 10%, utilizes pulverizer and ball mill to carry out crushing, after ball milling, make Carry out screening standby with the sieve of 100-200 mesh.By bed mud, P.O 42.5 cement proportionally 6:4 in room Cement blender is utilized first quickly to stir half a minute under the conditions of temperature, after adding the LW2 foaming agent of 0.5%, sooner Speed stirring 2 points of halfs, the most again low rate mixing 1 minute, and strictly control water-solid ratio is under room temperature condition 0.5.Water after mix homogeneously and cast from Standard Module, mechanical vibration 1-3 minute, prevent from being compacted at mould mud In tool, the demoulding after 24 hours, it is positioned over humidity > 95%, temperature is the wettest under the conditions of being controlled in 19.5-20.5 DEG C Formula maintenance 7-90 days, prepares unburned porous adsorbing material.The specification of non-sintered porous absorption can be controlled in diameter Between 0.5-5cm.
According to experiment: the specific surface area of bed mud porous adsorbing material is about 17m2/ g, average density is 372.47kg/m3, water absorption rate is 72.93%；The density rating of non-sintered porous adsorbing material, comprcssive strength etc. It is satisfied by the requirement in GBT17431.1-2010 " light-weight aggregate and test method-part 1 thereof: light-weight aggregate ".
According to HJ/T 299-2007 " solid waste Leaching leaching method sulfonitric method ", Cr in bed mud Leaching concentration be 0.01mg/L, Cu leaching concentration be 0.015mg/L, Zn leaching concentration be 0.007mg/L, Cd inspection does not measures, and Pb leaching concentration is 0.002mg/L.According to HJ/T 300-2007, " solid waste leaches poison Property leaching method hac buffer method " bed mud carried out Leaching of Heavy Metals experiment, Cr leaching concentration in bed mud For 0.15mg/L, Cu leaching concentration be 0.04mg/L, Zn leaching concentration be 0.08mg/L, Cd leaching concentration It is 0.05mg/L for 0.003mg/L, Pb leaching concentration.The two testing result is satisfied by GB 5085.3-2007 " hazardous waste judging standard leaching characteristic identification ", GB16889-2008 " household refuse landfill sites Environmental capacity Standard " and GB 8978-1996 " integrated wastewater discharge standard " primary standard.Testimonial material Leaching of Heavy Metals Property extremely low, in the ordinary course of things, will not to natural environment produce harm.
Non-sintered porous adsorbing material prepared by the present invention is in water processes, to absorbability phosphatic in water Relatively strong, clearance reaches about 85%；The clearance of total phosphorus in water is reached 75%；Nitrate nitrogen in water is gone Except rate reaches about 70%；Also a certain degree of absorption, clearance is had to reach 90% the heavy metals such as Cd in sewage Above.Its result can meet GB3838-2002 " water environment quality standard ", GBT18921-2002 simultaneously II-III class standards of water quality of " urban sewage reutilization water for scenic environment use water quality ".
Embodiment 3
After bed mud moisture content is down to below 10%, utilizes pulverizer and ball mill to carry out crushing, after ball milling, make Carry out screening standby with the sieve of 100-200 mesh.By bed mud, P.O 42.5 cement proportionally 4:6 in room Cement blender is utilized first quickly to stir half a minute under the conditions of temperature, after adding the T100 foaming agent of 3%, more quickly Stir 2 points of halfs, the most again low rate mixing 1 minute, and strictly control water-solid ratio is 0.5 under room temperature condition. Water after mix homogeneously and cast from Standard Module, mechanical vibration 1-3 minute, prevent from being compacted in a mold mud, The demoulding after 24 hours, is positioned over humidity > 95%, temperature is continuous wet type maintenance under the conditions of being controlled in 19.5-20.5 DEG C 7-90 days, prepare unburned porous adsorbing material.The specification of non-sintered porous absorption can be controlled in diameter 0.5-5cm Between.
According to experiment: the specific surface area of bed mud porous adsorbing material is about 15m2/ g, average density is 372.47kg/m3, water absorption rate is 71.09%；The density rating of non-sintered porous adsorbing material, comprcssive strength etc. It is satisfied by the requirement in GBT17431.1-2010 " light-weight aggregate and test method-part 1 thereof: light-weight aggregate ".
According to HJ/T 299-2007 " solid waste Leaching leaching method sulfonitric method ", Cr in bed mud Leaching concentration be 0.02mg/L, Cu leaching concentration be 0.005mg/L, Zn inspection do not measure, Cd inspection do not measure, Pb leaching concentration is 0.001mg/L.According to HJ/T 300-2007 " solid waste Leaching leaching method vinegar Acid buffering solwution method " bed mud is carried out Leaching of Heavy Metals experiment, in bed mud, Cr leaching concentration is 0.15mg/L, Cu leaching concentration be 0.06mg/L, Zn leaching concentration be 0.08mg/L, Cd leaching concentration be 0.0025mg/L, Pb leaching concentration is 0.064mg/L.The two testing result is satisfied by GB 5085.3-2007, and " hazardous waste reflects Other standard leaching characteristic identification ", GB16889-2008 " household refuse landfill sites Environmental capacity standard " and GB 8978-1996 " integrated wastewater discharge standard " primary standard.Testimonial material Leaching of Heavy Metals is extremely low, one In the case of as, natural environment will not be produced harm.
Non-sintered porous adsorbing material prepared by the present invention is in water processes, to absorbability phosphatic in water Relatively strong, clearance reaches about 88%；The clearance of total phosphorus in water is reached 75%；Nitrate nitrogen in water is gone Except rate reaches about 72%；Also a certain degree of absorption, clearance is had to reach 90% the heavy metals such as Cd in sewage Above.Its result can meet GB3838-2002 " water environment quality standard ", GBT18921-2002 simultaneously II-III class standards of water quality of " urban sewage reutilization water for scenic environment use water quality ".

Claims (6)

1. one kind uses the method that Dredged bed mud prepares porous adsorbing material, it is characterised in that comprise the steps:
1) gather lake dredging bottom-mud, after gravity-flow ventilation, stand, remove overlying water, bed mud air slaking under field conditions (factors) are dried so that it is moisture content < 10%；
2) bed mud lumpd after air-drying sequentially passes through pulverizer and ball mill crushing grinding, crosses 100-200 mesh sieve, collects standby；
3) bed mud, P.O 42.5 cement being mixed according to mass ratio 4-7:3-6, then mechanical agitation under room temperature condition, add foaming agent after mixing, continue mechanical agitation, the quality of described foaming agent is the 0.5%-3% of bed mud cement solids quality sum；
4) watering after mix homogeneously and cast from Standard Module, mechanical vibration 3-5 minute, the demoulding after 20 ~ 30 hours, in humidity > 95%, temperature be controlled in 19.5-20.5 DEG C under the conditions of wet type maintenance 7-90 days continuously, prepare non-sintered porous adsorbing material.
A kind of method using Dredged bed mud to prepare porous adsorbing material the most according to claim 1, it is characterized in that: after after the addition foaming agent described in step (3), continuation stirring refers to that agitator first stirs bed mud cement half a minute, add foaming agent, then proceed to stirring.
A kind of method using Dredged bed mud to prepare porous adsorbing material the most according to claim 1, it is characterized in that: the mechanical agitation described in step (3) step (3) is that agitator first stirs 25 ~ 45 seconds with the speed of 125-135r/min, add after foaming agent speed with 125-135r/min again to stir 2 ~ 3 minutes, then stir 50 ~ 80 seconds with the speed of 57-67r/min.
A kind of method using Dredged bed mud to prepare porous adsorbing material the most according to claim 1, it is characterised in that: in step 3), after adding foaming agent, the water-solid ratio in material is at ambient temperature between 0.3-0.6.
A kind of method using Dredged bed mud to prepare porous adsorbing material the most according to claim 1, it is characterised in that: in step 4), described mechanical vibration are that mechanical vibration are to filling up in Standard Module referring to be placed on vibration table mould, and amplitude is 0-5mm.
A kind of method using Dredged bed mud to prepare porous adsorbing material the most according to claim 1, it is characterised in that: the unconfined compressive strength of described unburned porous adsorbing material is more than or equal to 3MPa.
CN201610288515.5A 2016-05-03 2016-05-03 Method for preparing porous adsorption material by adopting dredged sediment Pending CN105948801A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102093071A (en) * 2010-11-30 2011-06-15 中国环境科学研究院 Method for preparing ceramic particles through modification of urban heavily polluted river dredged sediment
CN104108915A (en) * 2014-07-09 2014-10-22 上海理工大学 Sintering-free method for preparing bricks from dredged sediment
CN105130286A (en) * 2015-07-06 2015-12-09 上海理工大学 River sediment adsorption brick and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102093071A (en) * 2010-11-30 2011-06-15 中国环境科学研究院 Method for preparing ceramic particles through modification of urban heavily polluted river dredged sediment
CN104108915A (en) * 2014-07-09 2014-10-22 上海理工大学 Sintering-free method for preparing bricks from dredged sediment
CN105130286A (en) * 2015-07-06 2015-12-09 上海理工大学 River sediment adsorption brick and preparation method thereof

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