CN110218038A - A kind of preparation method of landfill yard bottom cushion material - Google Patents
A kind of preparation method of landfill yard bottom cushion material Download PDFInfo
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- CN110218038A CN110218038A CN201910638395.0A CN201910638395A CN110218038A CN 110218038 A CN110218038 A CN 110218038A CN 201910638395 A CN201910638395 A CN 201910638395A CN 110218038 A CN110218038 A CN 110218038A
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- sludge
- cushion material
- bottom cushion
- landfill yard
- preparation
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- 239000000463 material Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000010802 sludge Substances 0.000 claims abstract description 93
- 239000000203 mixture Substances 0.000 claims abstract description 40
- 239000002699 waste material Substances 0.000 claims abstract description 39
- 238000003756 stirring Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000835 fiber Substances 0.000 claims abstract description 32
- 239000004927 clay Substances 0.000 claims abstract description 31
- 239000002131 composite material Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- 235000009566 rice Nutrition 0.000 claims description 7
- 239000010903 husk Substances 0.000 claims description 6
- 235000015099 wheat brans Nutrition 0.000 claims description 6
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 238000012360 testing method Methods 0.000 description 10
- 239000010813 municipal solid waste Substances 0.000 description 9
- 239000002689 soil Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 7
- 241000209094 Oryza Species 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010348 incorporation Methods 0.000 description 4
- 239000010815 organic waste Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
- B09B1/004—Covering of dumping sites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- 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
- C04B28/001—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 unburned clay
-
- 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
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of preparation method of landfill yard bottom cushion material, is related to technical field of waste treatment.The following steps are included: adding vegetative fiber waste in sludge and being placed in liquor zinci chloridi and impregnate, stirring forms mixture for the preparation method of the landfill yard bottom cushion material；Under oxygen-free environment, to the mixture charing process, sludge ash is obtained；The sludge ash and clay are mixed, in stirring, water is added, forms composite mud；By the composite mud sealed maintenance, landfill yard bottom cushion material is obtained.The present invention is intended to provide a kind of landfill yard bottom cushion material of high intensity.
Description
Technical field
The present invention relates to technical field of waste treatment, in particular to a kind of preparation method of landfill yard bottom cushion material.
Background technique
The main method of Urban Garbage Treatment in China is Landfill.With the fast development in city, the rubbish of generation
It is more and more, thus lead to problems such as the capacity of landfill yard is excessive, component of refuse is too complicated to arise.
Currently, landfill yard mostly uses the clay of compacting as bottom cushion, but in the refuse landfill of large capacity, rubbish
Percolate is more, and by percolate long period of soaking mutability at slurry, this results in bottom cushion intensity to decline, can hold clay layer
The quantity of refuse of load reduces, meanwhile, the clay of slurry plays the role of lubrication, accelerates the sliding of rubbish and the soil body, is easy
Unstability.
Summary of the invention
The main object of the present invention is to propose a kind of preparation method of landfill yard bottom cushion material, it is desirable to provide Yi Zhonggao
The landfill yard bottom cushion material of intensity.
To achieve the above object, the present invention proposes a kind of preparation method of landfill yard bottom cushion material, the landfill yard
The preparation method of bottom cushion material the following steps are included:
Vegetative fiber waste is added in sludge and is placed in liquor zinci chloridi and is impregnated, and stirring forms mixture；
Under oxygen-free environment, to the mixture charing process, sludge ash is obtained；
The sludge ash and clay are mixed, in stirring, water is added, forms composite mud；
By the composite mud sealed maintenance, landfill yard bottom cushion material is obtained.
Optionally, the addition vegetative fiber waste in sludge, which is placed in liquor zinci chloridi, impregnates, and stirs shape
In the step of resulting mixture, the weight ratio of the vegetative fiber waste and the sludge is 1:(10~15).
Optionally, the addition vegetative fiber waste in sludge, which is placed in liquor zinci chloridi, impregnates, and stirs shape
In the step of resulting mixture, the vegetative fiber waste includes one of rice husk, stalk, cornstalk, sawdust and wheat bran
Or it is a variety of.
Optionally, the addition vegetative fiber waste in sludge, which is placed in liquor zinci chloridi, impregnates, and stirs shape
In the step of resulting mixture, the concentration of the liquor zinci chloridi is 0.5~1.2mol/L.
Optionally, described under oxygen-free environment, to the mixture charing process, in the step of obtaining sludge ash, the charcoal
The temperature for changing processing is 700 DEG C~800 DEG C.
Optionally, described under oxygen-free environment, to the mixture charing process, in the step of obtaining sludge ash, the charcoal
The time for changing processing is 0.5~1.2h.
Optionally, described to mix the sludge ash and clay, in stirring, in the step of water is added, forms composite mud,
The sludge ash and the weight ratio of the clay are 1:(18~25).
Optionally, described to mix the sludge ash and clay, in stirring, in the step of water is added, forms composite mud,
The additional amount of the water is the 18%~20% of the total weight of the sludge ash and the clay.
Optionally, described by the composite mud sealed maintenance, the step of obtaining landfill yard bottom cushion material, includes:
After mixing evenly by the composite mud, it is covered and is sealed with plastic cloth, stand 20~30h, obtain landfill yard bottom pad
Layer material.
Optionally, the addition vegetative fiber waste in sludge, which is placed in liquor zinci chloridi, impregnates, and stirs shape
Before the step of resulting mixture, further includes:
By sludge dewatering treatment, the sludge that water content is not higher than 10 (w/w) % is obtained, it is spare.
In technical solution provided by the invention, carbonized after mixing vegetative fiber waste and liquor zinci chloridi in sludge
Processing, greatly strengthens sludge to the adsorption capacity of pollutant, while this sludge ash being mixed to the composite wood obtained with clay
Material has stronger compression strength.In addition, preparation method of the present invention has used agriculture and forestry organic waste material and sludge, not only reduce glutinous
The input amount of soil, reduces costs, and provide new application approach for agriculture and forestry organic waste material and sludge, turns waste into wealth.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram of an embodiment of the preparation method of landfill yard bottom cushion material provided by the invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.Obviously, described embodiment is only a part of the embodiments of the present invention,
Instead of all the embodiments.
It should be noted that the person that is not specified actual conditions in embodiment, according to conventional conditions or manufacturer's recommended conditions
It carries out.Reagents or instruments used without specified manufacturer is the conventional products that can be obtained by commercially available purchase.In addition,
The meaning of the "and/or" occurred in full text, including three schemes arranged side by side, by taking " A and/or B " as an example, including A scheme or the side B
The scheme that case or A and B meet simultaneously.In addition, the technical solution between each embodiment can be combined with each other, but must be
Based on can be realized by those of ordinary skill in the art, answered when conflicting or cannot achieve when occurs in the combination of technical solution
When the combination for thinking this technical solution is not present, also not the present invention claims protection scope within.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Currently, landfill yard mostly uses the clay of compacting as bottom cushion, but in the refuse landfill of large capacity, rubbish
Percolate is more, and by percolate long period of soaking mutability at slurry, this results in bottom cushion intensity to decline, can hold clay layer
The quantity of refuse of load reduces, meanwhile, the clay of slurry plays the role of lubrication, accelerates the sliding of rubbish and the soil body, is easy
Unstability.
In addition, the processing means of sludge are based on incineration treatment method at present.Final product after sludge incineration is sludge
Ash, containing a large amount of poisonous and harmful and carcinogens in sludge ash, high temperature can kill part of substance, but cannot remove micro
Heavy metal.Sludge ash yield is huge, and engineer application is since the characteristic of itself is severely limited, cause to put into largely at
This is for handling sludge ash.
In consideration of it, the present invention proposes a kind of preparation method of landfill yard bottom cushion material, can be prepared using this method
A kind of landfill yard bottom cushion material with high-intensitive low cost out.Fig. 1 is landfill yard bottom cushion material proposed by the present invention
One embodiment of preparation method for material.
In conjunction with Fig. 1, in the present embodiment, the preparation method of the landfill yard bottom cushion material the following steps are included:
Step S10, vegetative fiber waste is added in sludge and is placed in liquor zinci chloridi and is impregnated, and stirring forms mixed
Close object.
In the present embodiment, vegetative fiber waste is mixed in sludge, provides charing in subsequent charing process for it
Material.Vegetative fiber waste refers to that various plants are utilized the waste of rear remaining fiber-like, for example, stalk, shell,
Rice husk, wheat bran, cornstalk, cotton stalk, sawdust etc., in the present embodiment, preferably in rice husk, stalk, cornstalk, sawdust and wheat bran one
Kind is a variety of.When charing, vegetative fiber waste meeting combustion generated gas in sludge so that form hole.Vegetative fiber
When the incorporation of waste is excessive, when it is uneven to will cause mixture stirring, and then leading to charing, the gas of each position generation
Unevenly, to keep the distribution of pores of the soil body uneven.In the present embodiment, the vegetative fiber waste of incorporation and the weight of sludge
Amount is than being 1:(10~15).
Further, more uniform to mix sludge with vegetative fiber waste, by vegetative fiber waste
It, can be first to vegetative fiber waste pulverization process before being incorporated into sludge.
Liquor zinci chloridi is common chemical activating agent.Sludge and vegetative fiber waste are soaked in liquor zinci chloridi
Bubble can play the role of profit into the zinc chloride in sludge and rise, be dehydrated and be condensed, and promote cellulose degradation, to make
The standby sludge ash with pore structure prosperity.Meanwhile other general chemical activators are compared, activation of the liquor zinci chloridi to sludge
Effect is more preferable, can not only shorten activation time, and can to avoid tar in pyrolytic process generation to improve sludge ash
Phosphorus content, and then improve its adsorption capacity.
Further, liquor zinci chloridi concentration is too big or dip time is too long will lead to the hole mistake formed after activation
Greatly, therefore, in the present embodiment, preferred concentration is the liquor zinci chloridi of 0.5~1.2mol/L.
In addition, for make mix vegetative fiber waste after sludge charred effect it is more preferable, before carrying out step S10,
Step S10 is carried out again after the water content of sludge to sludge dewatering treatment, can also be made to be not higher than 10 (w/w) %.
Step S20, under oxygen-free environment, to the mixture charing process, sludge ash is obtained.
When said mixture carbonizes in oxygen-free environment, the sludge ash of pore structure prosperity, this sludge ash tool will form
There is stronger adsorption capacity.When it is implemented, can heat charing at 700 DEG C~800 DEG C, the time of charing can be according to mixing
The charing actual conditions of object are adjusted.
Further, in order to reach highest charing efficiency, the time of charing process can be 0.5~1.2h.Further
Ground, can be in 0.5~1.2h of heating charing at 700 DEG C~800 DEG C, in this way, best charing can be obtained in the shortest time
Effect.
In addition, oxygen-free environment can by be passed through into retort inert gas realize, inert gas can be nitrogen or
Person's argon gas.
Step S30, the sludge ash and clay are mixed, in stirring, water is added, forms composite mud.
Sludge ash has lesser fineness and partial size, in the present embodiment, sludge ash is incorporated into manufactured bottom in clay
There is course stronger compression strength can carry more rubbish when it be used to prepare the bottom cushion of landfill yard
Rubbish, so that the capacity of refuse landfill be made to be greatly improved.
Wherein, the excessively high hole that will lead to manufactured bottom cushion material of the incorporation of sludge ash increases, and then leads to it
Ability decline is seeped in the antifouling resistance of manufactured bed course；The incorporation of sludge ash is too low, then the intensity decline of manufactured bed course.Therefore,
In the present embodiment, the weight ratio of the sludge ash and the clay is 1:(18~25), within this range, manufactured bottom cushion
Material not only intensity with higher, but also not will lead to antifouling resistance to seep performance too low.
In addition, the additional amount of control water is the 18%~20% of the total weight of sludge ash and clay, in this way, obtained compound
Mud can have optimum moisture content.
Step S40, by the composite mud sealed maintenance, landfill yard bottom cushion material is obtained.
Composite mud is conserved after making, and the moisture content to guarantee material entirety is more uniform.Specifically, step
S40 may include steps of:
After mixing evenly by the composite mud, it is covered and is sealed with plastic cloth, stand 20~30h, obtain landfill yard bottom pad
Layer material.
In construction, above-mentioned landfill yard bottom cushion material can be compacted on basal layer, form the bottom of landfill yard
Bed course.In compacting, in order to improve soil strength, avoid sliding, it can be with compaction in layers, and by soil layer surface after every lamination reality
Shaving is to enhance interfacial friction, it is ensured that is well combined between layers.
In technical solution provided by the invention, carbonized after mixing vegetative fiber waste and liquor zinci chloridi in sludge
Processing, greatly strengthens sludge to the adsorption capacity of pollutant, while this sludge ash being mixed to the composite wood obtained with clay
Material has stronger compression strength.In addition, preparation method of the present invention has used agriculture and forestry organic waste material and sludge, not only reduce glutinous
The input amount of soil, reduces costs, and provide new application approach for agriculture and forestry organic waste material and sludge, turns waste into wealth.
Technical solution of the present invention is described in further detail below in conjunction with specific embodiments and the drawings, it should be understood that
Following embodiment is only used to explain the present invention, is not intended to limit the present invention.
Embodiment 1
It takes water content to be not higher than the sludge 10Kg of 10 (w/w) %, adds 1Kg vegetative fiber waste (rice thereto
Shell), it is placed in the liquor zinci chloridi of 1mol/L and impregnates, and stir evenly.Under nitrogen protection by the mixture after stirring, in
700 DEG C of heating 1h, obtain sludge ash.Sludge ash and clay are mixed into mixture by weight 1:20, are then added while stirring
Water, the weight of water are the 20% of mixture weight.It is to be mixed uniformly after, formed composite mud, be covered on composite mud with plastic cloth
And seal, it stands for 24 hours, obtains landfill yard bottom cushion material.
Embodiment 2
It takes water content to be not higher than the sludge 15Kg of 10 (w/w) %, adds 1Kg vegetative fiber waste (corn thereto
Bar), it is placed in the liquor zinci chloridi of 1.1mol/L and impregnates, and stir evenly.Under nitrogen protection by the mixture after stirring, in
800 DEG C of heating 1.2h, obtain sludge ash.Sludge ash and clay are mixed into mixture by weight 1:22, then added while stirring
Enter water, the weight of water is the 18% of mixture weight.It is to be mixed uniformly after, formed composite mud, be covered on composite mud with plastic cloth
It goes up and seals, stand 30h, obtain landfill yard bottom cushion material.
Embodiment 3
It takes water content to be not higher than the sludge 10Kg of 10 (w/w) %, adds 1Kg vegetative fiber waste (straw thereto
Stalk), it is placed in the liquor zinci chloridi of 0.5mol/L and impregnates, and stir evenly.Under nitrogen protection by the mixture after stirring, in
750 DEG C of heating 0.5h, obtain sludge ash.Sludge ash and clay are mixed into mixture by weight 1:23, then added while stirring
Enter water, the weight of water is the 20% of mixture weight.It is to be mixed uniformly after, formed composite mud, be covered on composite mud with plastic cloth
It goes up and seals, stand 21h, obtain landfill yard bottom cushion material.
Embodiment 4
It takes water content to be not higher than the sludge 12Kg of 10 (w/w) %, adds 1Kg vegetative fiber waste (rice husk thereto
And stalk), it is placed in the liquor zinci chloridi of 0.8mol/L and impregnates, and stir evenly.By the mixture after stirring in nitrogen protection
Under, in 720 DEG C of heating 1.1h, obtain sludge ash.Sludge ash and clay are mixed into mixture by weight 1:19, then side is stirred
Water is added in side, and the weight of water is the 19% of mixture weight.It is to be mixed uniformly after, form composite mud, be covered on plastic cloth multiple
It closes on mud and seals, stand 26h, obtain landfill yard bottom cushion material.
Embodiment 5
Take water content be not higher than 10 (w/w) % sludge 14Kg, thereto add 1Kg vegetative fiber waste (rice husk,
Cornstalk, wheat bran), it is placed in the liquor zinci chloridi of 1.1mol/L and impregnates, and stir evenly.By the mixture after stirring in nitrogen
Under protection, in 760 DEG C of heating 0.8h, sludge ash is obtained.Sludge ash and clay are mixed into mixture by weight 1:25, then side
It stirs side and water is added, the weight of water is the 19% of mixture weight.It is to be mixed uniformly after, formed composite mud, covered with plastic cloth
It on composite mud and seals, stands 23h, obtain landfill yard bottom cushion material.
Embodiment 6
Take water content be not higher than 10 (w/w) % sludge 13Kg, thereto add 1Kg vegetative fiber waste (sawdust,
Wheat bran, stalk), it is placed in the liquor zinci chloridi of 1mol/L and impregnates, and stir evenly.By the mixture after stirring in nitrogen protection
Under, in 710 DEG C of heating 1h, obtain sludge ash.Sludge ash and clay are mixed into mixture by weight 1:18, then while stirring
Water is added, the weight of water is the 20% of mixture weight.It is to be mixed uniformly after, formed composite mud, be covered on plastic cloth compound
It on mud and seals, stands 25h, obtain landfill yard bottom cushion material.
The landfill yard bottom cushion material of the various embodiments described above preparation is tested for the property, test item includes: disperse
Coefficient test, adsorption capacity test and Mechanics Performance Testing.Test method is as follows:
Dispersion coefficient test: according to " underground water dynamics (third edition) " (Geology Publishing House 2010 of Xue Yuqun, Wu Jichun
Year publish) record method detect to Pb2+Dispersion coefficient；
Adsorption capacity test: according to GB/T-21851-2008 chemicals batch balancing method detection adsorption/desorption adhesion test test
To Pb2+Adsorption capacity；
Mechanics Performance Testing: it is examined according to the triaxial compression test method that GB/T 50123-1999 soil test standard is recorded
Survey shearing strength.
Recording detection data is as shown in the table.
As can be seen from the above table, the dispersion coefficient of landfill yard bottom cushion material and pure clay made from each embodiment be more
Coefficient is dissipated on the same order of magnitude, illustrates the permeability of bottom cushion material prepared by preparation method of the present invention still in national standard
In range, the bottom cushion for preparing landfill yard may be used as, further, landfill yard bottom cushion material made from each embodiment
Absorption property and shearing strength be apparently higher than pure clay, illustrate having for bottom cushion material prepared by preparation method of the present invention
Better pollution discharge capability and shearing strength, when being used to prepare the bottom cushion of landfill yard, can carry more rubbish, to make
The capacity of refuse landfill is greatly improved.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc. should all be included within the scope of the present invention.
Claims (10)
1. a kind of preparation method of landfill yard bottom cushion material, which comprises the following steps:
Vegetative fiber waste is added in sludge and is placed in liquor zinci chloridi and is impregnated, and stirring forms mixture；
Under oxygen-free environment, to the mixture charing process, sludge ash is obtained；
The sludge ash and clay are mixed, in stirring, water is added, forms composite mud；
By the composite mud sealed maintenance, landfill yard bottom cushion material is obtained.
2. the preparation method of landfill yard bottom cushion material as described in claim 1, which is characterized in that described to add in sludge
Add vegetative fiber waste to be placed in liquor zinci chloridi to impregnate, stir in the step of forming mixture, the vegetalitas is fine
The weight ratio for tieing up waste and the sludge is 1:(10~15).
3. the preparation method of landfill yard bottom cushion material as described in claim 1, which is characterized in that described to add in sludge
Add vegetative fiber waste to be placed in liquor zinci chloridi to impregnate, stir in the step of forming mixture, the vegetalitas is fine
Tieing up waste includes one of rice husk, stalk, cornstalk, sawdust and wheat bran or a variety of.
4. the preparation method of landfill yard bottom cushion material as described in claim 1, which is characterized in that described to add in sludge
Add vegetative fiber waste to be placed in liquor zinci chloridi to impregnate, stir in the step of forming mixture, the zinc chloride is molten
The concentration of liquid is 0.5~1.2mol/L.
5. the preparation method of landfill yard bottom cushion material as described in claim 1, which is characterized in that described in oxygen-free environment
Under, to the mixture charing process, in the step of obtaining sludge ash, the temperature of the charing process is 700 DEG C~800 DEG C.
6. the preparation method of landfill yard bottom cushion material as claimed in claim 1 or 5, which is characterized in that described in anaerobic
Under environment, to the mixture charing process, in the step of obtaining sludge ash, the time of the charing process is 0.5~1.2h.
7. the preparation method of landfill yard bottom cushion material as described in claim 1, which is characterized in that described by the sludge
Ash and clay mixing, in stirring, be added water, formed composite mud the step of in, the weight ratio of the sludge ash and the clay
For 1:(18~25).
8. the preparation method of landfill yard bottom cushion material as described in claim 1, which is characterized in that described by the sludge
Ash and clay mixing, in stirring, in the step of water is added, forms composite mud, the additional amount of the water be the sludge ash and
The 18%~20% of the total weight of the clay.
9. the preparation method of landfill yard bottom cushion material as described in claim 1, which is characterized in that it is described will be described compound
Mud sealed maintenance, the step of obtaining landfill yard bottom cushion material include:
After mixing evenly by the composite mud, it is covered and is sealed with plastic cloth, stood 20~30h, obtain landfill yard bottom cushion material
Material.
10. the preparation method of landfill yard bottom cushion material as described in claim 1, which is characterized in that described in sludge
Before the step of addition vegetative fiber waste, which is placed in liquor zinci chloridi, to be impregnated, and stirring forms mixture, further includes:
By sludge dewatering treatment, the sludge that water content is not higher than 10 (w/w) % is obtained, it is spare.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110668773A (en) * | 2019-11-12 | 2020-01-10 | 武汉轻工大学 | Landfill seepage-proofing barrier material and preparation method thereof |
| CN114195453A (en) * | 2021-12-16 | 2022-03-18 | 南通市泳宇新型建材有限公司 | Energy-saving building wall material and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
| CN1792979A (en) * | 2006-01-04 | 2006-06-28 | 湖南大学 | Process for mfg., impervious lining of refuse health filling field by urban sewage mud |
| CN1807331A (en) * | 2005-12-30 | 2006-07-26 | 同济大学 | Covering layer material based on sludge for daily garbage landfill |
| CN101475332A (en) * | 2009-01-19 | 2009-07-08 | 中国科学院武汉岩土力学研究所 | Preparation and use of sludge-stalk fibrous composite |
| KR20110062658A (en) * | 2009-12-03 | 2011-06-10 | 김송이 | Rehabilitation method of excavated site and space in quarrying and mining area and abandoned mining and tunnel |
| CN102966123A (en) * | 2012-11-29 | 2013-03-13 | 河海大学 | Double-layer clay liner for preventing seepage and resisting compression at bottom of refuse landfill |
| CN104961414A (en) * | 2015-07-16 | 2015-10-07 | 武汉轻工大学 | Rice hull light-weight building block and preparation method thereof |
| CN107882075A (en) * | 2017-10-17 | 2018-04-06 | 中国科学院武汉岩土力学研究所 | A kind of method that refuse landfill seepage control layer is built using river and lake silt |
| US20180229273A1 (en) * | 2014-09-30 | 2018-08-16 | Abengoa Bioenergia Nuevas Tecnologias, S.A. | Systems and methods for forming cellulosic biowaste from crude biowaste |
-
2019
- 2019-07-15 CN CN201910638395.0A patent/CN110218038A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
| CN1807331A (en) * | 2005-12-30 | 2006-07-26 | 同济大学 | Covering layer material based on sludge for daily garbage landfill |
| CN1792979A (en) * | 2006-01-04 | 2006-06-28 | 湖南大学 | Process for mfg., impervious lining of refuse health filling field by urban sewage mud |
| CN101475332A (en) * | 2009-01-19 | 2009-07-08 | 中国科学院武汉岩土力学研究所 | Preparation and use of sludge-stalk fibrous composite |
| KR20110062658A (en) * | 2009-12-03 | 2011-06-10 | 김송이 | Rehabilitation method of excavated site and space in quarrying and mining area and abandoned mining and tunnel |
| CN102966123A (en) * | 2012-11-29 | 2013-03-13 | 河海大学 | Double-layer clay liner for preventing seepage and resisting compression at bottom of refuse landfill |
| US20180229273A1 (en) * | 2014-09-30 | 2018-08-16 | Abengoa Bioenergia Nuevas Tecnologias, S.A. | Systems and methods for forming cellulosic biowaste from crude biowaste |
| CN104961414A (en) * | 2015-07-16 | 2015-10-07 | 武汉轻工大学 | Rice hull light-weight building block and preparation method thereof |
| CN107882075A (en) * | 2017-10-17 | 2018-04-06 | 中国科学院武汉岩土力学研究所 | A kind of method that refuse landfill seepage control layer is built using river and lake silt |
Non-Patent Citations (1)
| Title |
|---|
| 邢百会 等: "Cu2 + 在污泥灰改良粘土垫层中吸附规律的研究", 《武汉轻工大学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110668773A (en) * | 2019-11-12 | 2020-01-10 | 武汉轻工大学 | Landfill seepage-proofing barrier material and preparation method thereof |
| CN110668773B (en) * | 2019-11-12 | 2021-12-03 | 武汉轻工大学 | Landfill seepage-proofing barrier material and preparation method thereof |
| CN114195453A (en) * | 2021-12-16 | 2022-03-18 | 南通市泳宇新型建材有限公司 | Energy-saving building wall material and preparation method thereof |
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